TWI834913B - absorbent articles - Google Patents
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- TWI834913B TWI834913B TW109132725A TW109132725A TWI834913B TW I834913 B TWI834913 B TW I834913B TW 109132725 A TW109132725 A TW 109132725A TW 109132725 A TW109132725 A TW 109132725A TW I834913 B TWI834913 B TW I834913B
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Abstract
本發明所欲解決的問題在於提供一種吸收性物品，其同時謀求黏性液的吸收性與非黏性液的吸收性能。 為了解決此問題，本發明的吸收性物品，其中：吸收體70的上輔助層71，具有高吸水不織布42和第一高吸收性聚合物粒子43，該高吸水不織布42的表面露出於吸收體70的最頂面且其KLEMM吸水度為100mm以上，該第一高吸收性聚合物粒子43鄰接於此高吸水不織布42的背面；吸收體70的主吸收層72，是具有第二高吸收性聚合物粒子53之胞室吸收片50，該第二高吸收性聚合物粒子53被收容在隔開間隔地配列的胞室55內；主吸收層72的上片51的頂面上的第一高吸收性聚合物粒子43的總單位面積的質量為50～150g/m2 。The problem to be solved by the present invention is to provide an absorbent article that simultaneously achieves absorption properties of viscous liquids and non-viscous liquids. In order to solve this problem, in the absorbent article of the present invention, the upper auxiliary layer 71 of the absorbent body 70 has a highly water-absorbent nonwoven fabric 42 and a first highly absorbent polymer particle 43, and the surface of the highly water-absorbent nonwoven fabric 42 is exposed to the absorbent body. The top surface of 70 has a KLEMM water absorption of 100 mm or more. The first highly absorbent polymer particles 43 are adjacent to the back of the highly absorbent non-woven fabric 42; the main absorbent layer 72 of the absorbent body 70 has the second highly absorbent material. In the cell absorbent sheet 50 of polymer particles 53, the second highly absorbent polymer particles 53 are accommodated in cells 55 arranged at intervals; The total mass per unit area of the super absorbent polymer particles 43 is 50 to 150 g/m 2 .
Description
本發明關於一種吸收性物品，其提升對具有黏性之液體(以下也稱為黏性液)例如泥狀糞便或水狀糞便中的黏性液成分的吸收性。The present invention relates to an absorbent article that improves the absorbability of viscous liquids (hereinafter also referred to as viscous liquids), such as viscous liquid components in muddy feces or watery feces.
吸收性物品，具備吸收體和透液性的頂片，該頂片包覆此吸收體的表面側，並藉由吸收體來吸收並保持已透過頂片之尿或經血等***液。作為吸收體，廣泛地採用一種在粉碎紙漿等親水性短纖維中混合高吸收性聚合物粒子(SAP，Superabsorbent polymers)並積纖成棉狀的吸收體，還有各種提案(例如參照下述專利文獻1～6)，作為可確保充分的吸收量並進一步回應薄型化、輕量化、低成本化等要求之吸收片(以下也稱為胞室吸收片)，具有：多數個胞室(小室)，其周圍藉由具有透液性的上片與下片的接合部來包圍，且上片與下片沒有接合；及，粉粒體，其包含在此胞室內包含的高吸收性聚合物粒子。An absorbent article includes an absorbent body and a liquid-permeable top sheet. The top sheet covers the surface side of the absorbent body, and the absorbent body absorbs and retains excretion fluids such as urine or menstrual blood that have passed through the top sheet. As an absorbent body, one in which superabsorbent polymer particles (SAP, Superabsorbent polymers) are mixed with hydrophilic short fibers such as ground pulp and laminated into cotton-like fibers is widely used, and there are various proposals (for example, refer to the following patents) Documents 1 to 6), as an absorbent sheet (hereinafter also referred to as a cellular absorbent sheet) that can ensure sufficient absorption and further respond to the requirements for thinness, weight reduction, cost reduction, etc., it has: a plurality of cells (cells) , which is surrounded by the joint portion of the liquid-permeable upper sheet and the lower sheet, and the upper sheet and the lower sheet are not jointed; and, a powder body containing highly absorbent polymer particles contained in the cell. .
然而，先前的一般的吸收性物品中，當吸收對象是如泥狀糞便或水狀糞便、軟便中的液體成分這樣的黏性液時，吸收速度會變慢，某種程度地殘留在尿布表面很久，所以會有在吸收性物品的表面上流動而移動並容易自周圍洩漏這樣的問題。However, in conventional general absorbent articles, when the absorbent object is viscous liquid such as muddy feces, watery feces, or liquid components in soft feces, the absorption speed is slowed down, and some residues remain on the surface of the diaper to some extent. It takes a long time, so there is a problem that it flows and moves on the surface of absorbent articles and leaks easily from the surroundings.
特別是，上述胞室吸收片，其吸收性能取決於高吸收性聚合物粒子，所以雖然適用於尿等非黏性液的大量吸收，吸收速度卻相反地會變慢，因此並不適用於黏性液的吸收。In particular, the absorption performance of the above-mentioned cell-absorbent sheet depends on the super-absorbent polymer particles. Therefore, although it is suitable for absorbing large amounts of non-viscous liquids such as urine, the absorption speed will be conversely slow, so it is not suitable for viscous liquids. Absorption of sexual fluids.
[先前技術文獻] (專利文獻) 專利文獻1：日本特表平09-504207號公報 專利文獻2：日本特表2014-500736號公報 專利文獻3：日本特開2011-189067號公報 專利文獻4：日本特開平10-137291號公報 專利文獻5：日本特開2017-176507號公報 專利文獻6：日本特開2010-522595號公報[Prior technical literature] (patent document) Patent document 1: Japanese Patent Publication No. 09-504207 Patent Document 2: Japanese Patent Publication No. 2014-500736 Patent document 3: Japanese Patent Application Publication No. 2011-189067 Patent Document 4: Japanese Patent Application Publication No. 10-137291 Patent Document 5: Japanese Patent Application Publication No. 2017-176507 Patent Document 6: Japanese Patent Application Publication No. 2010-522595
於是，本發明主要所欲解決的問題在於同時謀求黏性液的吸收性與非黏性液的吸收性能。Therefore, the main problem to be solved by the present invention is to simultaneously achieve the absorptive properties of viscous liquids and non-viscous liquids.
解決了上述問題的吸收性物品如下述。 ＜第一態樣＞ 一種吸收性物品，其特徵在於，具備吸收體和透液性的頂片，該頂片被配置在此吸收體的表面側； 其中，前述吸收體，具有被設置於最上部之上輔助層、及被設置於此上輔助層的背面側之主吸收層； 前述上輔助層具有高吸水不織布和第一高吸收性聚合物粒子，該高吸水不織布的表面露出於前述吸收體的最頂面且其KLEMM吸水度為100mm以上，該第一高吸收性聚合物粒子鄰接於此高吸水不織布的背面； 前述主吸收層是具有胞室和粉粒體之胞室吸收片，該胞室是其周圍藉由具有透液性的上片和下片、及前述上片與前述下片的接合部來包圍之前述上片與前述下片的非接合的部分，該粉粒體包含在此胞室內收容的第二高吸收性聚合物粒子； 前述胞室吸收片中，前述胞室被隔開間隔地配列； 前述主吸收層的前述上片的頂面上的前述第一高吸收性聚合物粒子的總單位面積的質量為50～150g/m2 。Absorbent articles that solve the above problems are as follows. <First Aspect> An absorbent article, characterized by having an absorbent body and a liquid-permeable top sheet disposed on the surface side of the absorbent body; wherein the absorbent body has a The upper auxiliary layer and the main absorbent layer disposed on the back side of the upper auxiliary layer; the upper auxiliary layer has a highly water-absorbent nonwoven fabric and first highly absorbent polymer particles, and the surface of the highly water-absorbent nonwoven fabric is exposed to the absorbent layer The top surface of the body and its KLEMM water absorption is more than 100mm, and the first highly absorbent polymer particles are adjacent to the back of the highly absorbent non-woven fabric; the aforementioned main absorption layer is a cellular absorption sheet with cells and powders. The cell is a non-joined portion of the upper sheet and the lower sheet surrounded by a liquid-permeable upper sheet and a lower sheet and a joint portion of the upper sheet and the lower sheet, and the powder and granular body Containing second highly absorbent polymer particles accommodated in the cell; In the cell absorbent sheet, the cells are arranged at intervals; The first high absorbent layer on the top surface of the top sheet of the main absorbent layer The total mass per unit area of the absorbent polymer particles is 50 to 150 g/m 2 .
(作用效果) 改善覆蓋吸收體的表面側之層中的黏性液的透過性是先前的一般的處理法(approach)，其重要性不變，然而可藉由吸收體迅速地吸入來進一步促進黏性液的迅速透過。也就是說，針對黏性液的吸收，在吸收體的最上部中的初期的吸收速度極為重要。本吸收性物品，是基於這種見識來完成。本吸收性物品，具有的特徵在於：在吸收體的最頂面設置有上輔助層，該上輔助層特化了黏性液的吸收。亦即，此上輔助層，具有高吸水不織布和第一高吸收性聚合物粒子，該高吸水不織布的表面露出於前述吸收體的最頂面且其KLEMM吸水度為100mm以上，該第一高吸收性聚合物粒子鄰接於此高吸水不織布的背面，所以即便對於黏性液，高吸水不織布也能夠迅速地加以吸收並擴散，並且傳遞到鄰接於其背面的第一高吸收性聚合物粒子，藉由第一高吸收性聚合物粒子來吸收並保持。藉此，能夠顯著地提升對黏性液的吸收性。 (Effect) Improving the permeability of the viscous liquid in the layer covering the surface side of the absorber is a conventional approach, and its importance remains unchanged. However, the absorption of the viscous liquid can be further promoted by rapid inhalation of the absorber. Pass through quickly. In other words, for the absorption of viscous liquid, the initial absorption speed in the uppermost part of the absorber is extremely important. This absorbent article is based on this insight. This absorbent article is characterized in that an upper auxiliary layer is provided on the topmost surface of the absorbent body, and the upper auxiliary layer is specialized in absorbing viscous liquid. That is, the upper auxiliary layer has a highly water-absorbent nonwoven fabric and first highly absorbent polymer particles. The surface of the highly water-absorbent nonwoven fabric is exposed on the top surface of the absorbent body and has a KLEMM water absorption of 100 mm or more. The first high-absorbent nonwoven fabric has The absorbent polymer particles are adjacent to the back surface of the super absorbent non-woven fabric, so even for viscous liquids, the super absorbent non-woven fabric can quickly absorb and spread it, and transfer it to the first super absorbent polymer particles adjacent to the back surface. Absorbed and retained by the first super absorbent polymer particles. In this way, the absorbency of viscous liquid can be significantly improved.
其中，當在本吸收性物品中吸收尿等非黏性液時，若將上輔助層的第一高吸收性聚合物粒子設置成相同的狀態(均勻地設置的式樣)，則第一高吸收性聚合物粒子會優先地吸收並膨脹，膨脹後的第一高吸收性聚合物粒子密合並形成不易透液性的層，而容易發生凝膠阻塞(gel blocking)，使得非黏性液可能會不易供給到主吸收層。也就是說，上輔助層可能阻礙藉由主吸收層進行的吸收。 When the present absorbent article absorbs non-viscous liquids such as urine, if the first super absorbent polymer particles in the upper auxiliary layer are arranged in the same state (a uniform arrangement), the first super absorbent polymer particles The super-absorbent polymer particles will preferentially absorb and swell. The expanded first super-absorbent polymer particles will be dense and form a layer that is not easily permeable to liquids, and gel blocking will easily occur, so that non-viscous liquids may It is difficult to supply to the main absorption layer. That is, the upper auxiliary layer may hinder absorption by the main absorbent layer.
相對於此，如本吸收性物品，若主吸收層的上片的頂面上的第一高吸收性聚合物粒子的總單位面積的質量為50~150g/m2，則能夠有效地利用被固定於上片的頂面上之第一高吸收性聚合物粒子來進行黏性液的吸收，即使當非黏性液的吸收時使得第一高吸收性聚合物粒子充分地吸收並膨脹之後，也不易發生凝膠阻塞，而不易阻礙非黏性液供給到主吸收層。 On the other hand, as in this absorbent article, if the total unit area mass of the first highly absorbent polymer particles on the top surface of the top sheet of the main absorbent layer is 50 to 150 g/m 2 , it is possible to effectively utilize the The first super-absorbent polymer particles fixed on the top surface of the upper sheet absorb viscous liquid. Even after the first super-absorbent polymer particles are fully absorbed and expanded when non-viscous liquid is absorbed, It is also less likely to cause gel clogging and less likely to hinder the supply of non-viscous liquid to the main absorbent layer.
<第二態樣> <Second Aspect>
如第一態樣所述的吸收性物品，其中，前述上片，具有未實施賦形加工而平坦的頂面； 在前述下片中的位於各胞室的部分，在展開狀態下被往下側推出而形成為凹部。The absorbent article according to the first aspect, wherein the upper sheet has a flat top surface that is not shaped; The portion of the lower sheet located in each cell is pushed downward in the unfolded state to form a recessed portion.
(作用效果) 胞室吸收片中，主要是為了確保當第二高吸收性聚合物粒子吸收並膨脹時的容積，較佳為在上片和下片的至少一方，使位於各胞室的部分在展開狀態下被往厚度方向的外側推出而形成為凹部。但是若在上片設置這種凹部，則會在上片的頂面形成凸部而不易與上輔助層的高吸水不織布密合(容易產生間隙)，可能阻礙自高吸水不織布朝向第一高吸收性聚合物粒子之黏性液的傳遞。相對於此，本態樣的情況，藉由下片的凹部來確保第二高吸收性聚合物粒子的膨脹容積，並且上片的頂面和被配置於該處之第一高吸收性聚合物粒子容易與上輔助層的高吸水不織布密合，成為不易阻礙自高吸水不織布朝向第一高吸收性聚合物粒子之黏性液的傳遞之吸收性物品。(Effect) In the cell-absorbent sheet, mainly to ensure the volume when the second super-absorbent polymer particles are absorbed and expanded, it is preferable that at least one of the upper sheet and the lower sheet has the portion located in each cell in the expanded state. It is pushed outward in the thickness direction to form a recessed portion. However, if such a concave portion is provided in the upper sheet, a convex portion will be formed on the top surface of the upper sheet and will not easily adhere to the highly water-absorbent nonwoven fabric of the upper auxiliary layer (a gap will easily occur), which may hinder the movement from the highly water-absorbent nonwoven fabric to the first highly absorbent fabric. Transfer of viscous fluid from polymer particles. On the other hand, in this aspect, the expansion volume of the second super absorbent polymer particles is ensured by the recessed portion of the lower sheet, and the top surface of the upper sheet and the first super absorbent polymer particles arranged there It is easy to adhere closely to the super absorbent nonwoven fabric of the upper auxiliary layer, and becomes an absorbent article that is not likely to hinder the transfer of viscous liquid from the super absorbent nonwoven fabric to the first super absorbent polymer particles.
＜第三態樣＞ 如第一態樣或第二態樣所述的吸收性物品，其中，前述第一高吸收性聚合物粒子的量，被設置成在寬度方向、前後方向及斜向的至少一方反復地增減。＜Third Aspect＞ The absorbent article according to the first aspect or the second aspect, wherein the amount of the first super-absorbent polymer particles is set so as to repeatedly increase or decrease in at least one of the width direction, the front-rear direction, and the diagonal direction. .
(作用效果) 本態樣中，能夠將被固定於上片的頂面上之第一高吸收性聚合物粒子有效地利用於黏性液的吸收，並且即使當非黏性液的吸收時使得第一高吸收性聚合物粒子充分地吸收並膨脹之後，在第一高吸收性聚合物粒子的量較少的部分特別不易發生凝膠阻塞，而特別不易阻礙非黏性液供給到主吸收層。(Effect) In this aspect, the first highly absorbent polymer particles fixed on the top surface of the upper sheet can be effectively utilized for the absorption of viscous liquid, and the first highly absorbent polymer particles can be made even when non-viscous liquid is absorbed After the polymer particles are fully absorbed and expanded, gel blocking is particularly difficult to occur in the portion with a small amount of the first high-absorbent polymer particles, and the supply of non-viscous liquid to the main absorbent layer is particularly difficult to be hindered.
＜第四態樣＞ 如第一態樣至第三態樣中任一態樣所述的吸收性物品，其中，在前述主吸收層的前述上片的頂面，以交互地反復的方式設置有第一部分和第二部分，該第一部分中的前述第一高吸收性聚合物粒子的單位面積的質量未滿150g/m2 ，該第二部分中的前述第一高吸收性聚合物粒子的單位面積的質量超過150g/m2 。<Fourth Aspect> The absorbent article according to any one of the first to third aspects, wherein the main absorbent layer is provided on the top surface of the top sheet in an alternate and repeated manner. There are a first part and a second part. The mass per unit area of the first highly absorbent polymer particles in the first part is less than 150 g/m 2 . The mass per unit area of the first highly absorbent polymer particles in the second part is The mass per unit area exceeds 150g/m 2 .
(作用效果) 本態樣中，即使當非黏性液的吸收時使得第一高吸收性聚合物粒子充分地吸收並膨脹之後，在第一高吸收性聚合物粒子的單位面積的質量未滿150g/m2 的第一部分也不易發生凝膠阻塞，所以特別不易阻礙非黏性液供給到主吸收層。而且，不但如此，也具有第一高吸收性聚合物粒子的單位面積的質量比150g/m2 更多的第二部分，所以也能夠充分地確保對於黏性液的吸收量。因此，如本態樣構成的第一部分和第二部分，在同時謀求黏性液的吸收性與非黏性液的吸收性能方面為特佳。 另外，第一高吸收性聚合物粒子的單位面積的質量未滿150g/m2 ，是指包含零，亦即沒有固定有第一高吸收性聚合物粒子的情況。又，第一部分和第二部分中的第一高吸收性聚合物粒子的各自的單位面積的質量，當然是將第一部分和第二部分中的總單位面積的質量決定為在50～150g/m2 的範圍內。(Effect) In this aspect, even after the first super-absorbent polymer particles are fully absorbed and expanded by the absorption of the non-viscous liquid, the mass per unit area of the first super-absorbent polymer particles is less than 150 g. The first part of / m2 is also not prone to gel blocking, so it is particularly difficult to hinder the supply of non-viscous liquid to the main absorbent layer. Furthermore, in addition to this, the first super-absorbent polymer particles also have a second portion in which the mass per unit area of the first super-absorbent polymer particles is more than 150 g/m 2 , so the amount of absorption of viscous liquid can be sufficiently ensured. Therefore, the first part and the second part constituted in this aspect are particularly advantageous in achieving both the absorbability of viscous liquids and the absorption performance of non-viscous liquids. In addition, when the mass per unit area of the first super-absorbent polymer particles is less than 150 g/m 2 , it means that zero is included, that is, the first super-absorbent polymer particles are not fixed. In addition, the mass per unit area of the first high-absorbent polymer particles in the first part and the second part is, of course, determined so that the total mass per unit area in the first part and the second part is 50 to 150 g/m within the range of 2 .
＜第五態樣＞ 如第四態樣所述的吸收性物品，其中，以在寬度方向上交互地反復的方式設置有前述第一部分和前述第二部分， 前述第一部分的寬度方向的尺寸為5～10mm， 前述第二部分的寬度方向的尺寸為5～10mm。＜Fifth Aspect＞ The absorbent article according to the fourth aspect, wherein the first part and the second part are provided so as to alternately repeat in the width direction, The dimension in the width direction of the aforementioned first part is 5 to 10 mm, The width direction dimension of the aforementioned second part is 5 to 10 mm.
(作用效果) 第一部分和第二部分的尺寸能夠適當地規定，較佳為例如在本態樣的範圍內。(Effect) The dimensions of the first part and the second part can be appropriately specified, and are preferably within the scope of this aspect, for example.
＜第六態樣＞ 如第一態樣至第五態樣中任一態樣所述的吸收性物品，其中，在前述主吸收層中的前述第二高吸收性聚合物粒子的單位面積的質量為150～250g/m2 。<Sixth Aspect> The absorbent article according to any one of the first to fifth aspects, wherein the second highly absorbent polymer particles in the main absorbent layer have an area per unit area of The mass is 150~250g/m 2 .
(作用效果) 本吸收性物品中，在上輔助層含有第一高吸收性聚合物粒子，所以能夠將在主吸收層中的第二高吸收性聚合物粒子的單位面積的質量抑制成如本態樣般地較少。因此，當使用者用手碰觸吸收性物品的外表面時，第二高吸收性聚合物粒子的小顆粒摩擦(產生沙沙聲音)的觸感(違和感)不易傳遞到手上。(Effect) In this absorbent article, since the upper auxiliary layer contains the first super-absorbent polymer particles, the mass per unit area of the second super-absorbent polymer particles in the main absorbent layer can be suppressed to a smaller value as in this aspect. few. Therefore, when the user touches the outer surface of the absorbent article with his hand, the tactile feeling (unconventional feeling) caused by the friction (generating a rustling sound) of the small particles of the second super-absorbent polymer particles is not easily transmitted to the hand.
＜第七態樣＞ 如第一態樣至第六態樣中任一態樣所述之吸收性物品，其中，前述下片是細度為1.5～6.0dtex、單位面積的質量為25～50g/m2 且厚度為0.1～1.0mm的不織布。<Seventh Aspect> The absorbent article according to any one of the first to sixth aspects, wherein the lower sheet has a fineness of 1.5 to 6.0 dtex and a mass per unit area of 25 to 50 g. /m 2 and a thickness of 0.1 ~ 1.0mm non-woven fabric.
(作用效果) 下片是如本態樣般的較稀疏的原材料，藉此胞室內的第二高吸收性聚合物粒子容易被保持在下片的纖維之間而不易在胞室內移動，所以較佳(Effect) The lower sheet is made of a relatively sparse material like this, so that the second highly absorbent polymer particles in the cells are easily held between the fibers of the lower sheet and are not easy to move within the cells, so it is preferable.
依據本發明，能夠同時謀求黏性液的吸收性與非黏性液的吸收性能等而帶來優點。According to the present invention, it is possible to simultaneously achieve the absorbability of viscous liquids and the absorbability of non-viscous liquids, thereby bringing about advantages.
以下，作為吸收性物品的一例，一邊參照附圖一邊說明黏貼型拋棄式尿布。圖1～圖6表示黏貼型拋棄式尿布的一例。圖中的符號X表示將緊固帶除外後的尿布的全寬，符號L表示尿布的全長。另外，在厚度方向上鄰接的各構成構件，除了以下所述的固定或接合部分以外，對應於需要也可與習知的尿布進行同樣的固定或接合。在剖視圖中的點紋部分，表示作為此固定或接合手段之熱熔黏接劑等黏接劑。熱熔黏接劑，能夠藉由狹縫塗佈、連續線狀或點線狀的液珠塗佈、螺旋狀、Z狀、波狀等噴塗、或者圖案塗佈(藉由凸版方式實現的熱熔黏接劑的轉印)等習知的手法來塗佈。取代或並行地，能夠在彈性構件的固定部分，將熱熔黏接劑塗佈於彈性構件的外周面，並將彈性構件固定於鄰接構件。作為熱熔黏接劑，能夠沒有特別限定地使用，例如EVA(乙烯-醋酸乙烯共聚合物)系、黏著橡膠系(彈性體系)、烯烴系、聚酯和聚醯胺系等的種類的熱熔黏接劑。作為接合各構成構件之固定或接合手段，能夠使用熱封和超音波密封等的原材料熔接手段。在被要求厚度方向上的透液性之部分，利用間歇性的圖案來固定或接合在厚度方向上鄰接的構成構件。例如當藉由熱熔黏接劑來實行這種間歇性的固定或接合時，能夠適當地使用螺旋狀、Z狀、波狀等間歇性圖案的塗佈，當要塗佈一個噴嘴的塗佈寬度以上的範圍時，能夠在寬度方向隔開或不隔開間隔地實行螺旋狀、Z狀、波狀等間歇性圖案的塗佈。Hereinafter, an adhesive disposable diaper will be described as an example of the absorbent article with reference to the drawings. Figures 1 to 6 show an example of an adhesive type disposable diaper. The symbol X in the figure represents the full width of the diaper excluding the fastening tape, and the symbol L represents the entire length of the diaper. In addition, each structural member adjacent in the thickness direction may be fixed or joined in the same manner as a conventional diaper, if necessary, except for the fixing or joining portions described below. The dotted part in the cross-sectional view represents the hot melt adhesive and other adhesives used as the fixing or joining means. Hot melt adhesive can be applied by slit coating, continuous linear or dotted line bead coating, spiral, Z-shaped, wavy, etc. spray coating, or pattern coating (thermal coating achieved by letterpress method). Apply by conventional methods such as transfer of melt adhesive). Alternatively or in parallel, a hot melt adhesive can be applied to the outer peripheral surface of the elastic member at the fixed portion of the elastic member, and the elastic member can be fixed to the adjacent member. As the hot melt adhesive, there can be used without particular limitation, for example, EVA (ethylene-vinyl acetate copolymer) type, adhesive rubber type (elastic system), olefin type, polyester, polyamide type, etc. Melt adhesive. As a fixing or joining means for joining the constituent members, raw material welding means such as heat sealing and ultrasonic sealing can be used. In the portion where liquid permeability in the thickness direction is required, constituent members adjacent in the thickness direction are fixed or joined using an intermittent pattern. For example, when performing such intermittent fixing or joining with hot melt adhesive, coating with intermittent patterns such as spiral, Z-shaped, and wavy patterns can be appropriately used. When coating with one nozzle, In the range of the width or more, coating in intermittent patterns such as spiral, Z-shaped, and wavy patterns can be performed with or without intervals in the width direction.
此黏貼型拋棄式尿布具有的基本構造，是在具有透液性的頂片與位於背面側之不透液性片之間存在有吸收體70。又，此黏貼型拋棄式尿布，具有端翼EF並且具有一對的側翼SF，該端翼EF是在吸收體70的前側和後側分別地伸出的部分，且是不具有吸收體70之部分，該側翼SF比吸收體70的側緣更往側方伸出。側翼SF的兩側緣，以沿著腿圍的方式作成收攏形狀，也可以作成直線狀。背側部分B中的側翼SF，分別地設置有緊固帶13，當尿布的穿著時，在將背側部分B的側翼SF重疊於腹側部分F的側翼SF的外側的狀態下，將緊固帶13卡止於腹側部分F的外表面的適當處所。The basic structure of this adhesive type disposable diaper is that the absorbent body 70 is interposed between a liquid-permeable top sheet and a liquid-impermeable sheet located on the back side. In addition, this adhesive type disposable diaper has end flaps EF and a pair of side flaps SF. The end flaps EF are portions that respectively protrude from the front and rear sides of the absorbent body 70, and are the ones that do not have the absorbent body 70. part, the side flaps SF protrude laterally than the side edges of the absorber 70 . Both side edges of the side flap SF may be formed into a gathered shape along the leg circumference, or may be formed into a straight shape. The side flaps SF in the back part B are respectively provided with fastening tapes 13. When wearing the diaper, the side flaps SF of the back part B are overlapped on the outside of the side flaps SF of the abdominal part F. The fixed belt 13 is locked in a suitable position on the outer surface of the ventral part F.
又，此黏貼型拋棄式尿布中，藉由外裝不織布12來形成緊固帶13以外的整個外表面。特別是，在包含吸收體70之區域中，藉由熱熔黏接劑等黏接劑來將不透液性片11固定於外裝不織布12的內表面側，進一步在此不透液性片11的內表面側依序積層有吸收體70、中間片40及頂片30。頂片30和不透液性片11在圖示例中是長方形，具有相較於吸收體70在前後方向LD和寬度方向WD上稍微更大的尺寸，並藉由熱熔黏接劑等來接合在頂片30中的比吸收體70的側緣更超出的周緣部、與在不透液性片11中的比吸收體70的側緣更超出的周緣部。又，不透液性片11，形成有相較於頂片30稍微更寬的寬度。In addition, in this adhesive type disposable diaper, the entire outer surface except the fastening tape 13 is formed by the outer nonwoven fabric 12 . In particular, in the area including the absorber 70, the liquid-impermeable sheet 11 is fixed to the inner surface side of the exterior nonwoven fabric 12 using an adhesive such as a hot-melt adhesive. Further, the liquid-impermeable sheet The absorber 70, the middle sheet 40, and the top sheet 30 are laminated|stacked in this order on the inner surface side of 11. The top sheet 30 and the liquid-impermeable sheet 11 are rectangular in the illustrated example and have slightly larger dimensions than the absorbent body 70 in the front-rear direction LD and the width direction WD, and are formed by hot-melt adhesive or the like. The peripheral edge portion of the top sheet 30 that extends beyond the side edges of the absorbent body 70 and the peripheral edge portion of the liquid-impermeable sheet 11 that extends beyond the side edges of the absorbent body 70 are joined together. In addition, the liquid-impermeable sheet 11 is formed to have a slightly wider width than the top sheet 30 .
進一步，在此吸收性本體部10的兩側，設置有往穿著者的肌膚側立起的立起皺褶60，形成此立起皺褶60之皺褶片62，被黏固在自頂片30的兩側部上至各側翼SF的內表面為止的範圍中。Furthermore, on both sides of the absorbent main part 10, there are erected pleats 60 erected toward the wearer's skin side, and the pleated sheets 62 forming the erected pleats 60 are adhered to the top sheet. The range from both sides of 30 to the inner surface of each side flap SF.
以下，依序說明各部的詳細。另外，作為以下說明中的不織布，能夠對應於部位和目的而適當地使用習知的不織布。作為不織布的構成纖維，除了能夠選擇例如聚乙烯或聚丙烯等烯烴系、聚酯系、以及聚醯胺系等合成纖維(除了單成分纖維之外，也包含芯鞘等複合纖維)之外，還能夠使用人造絲或銅銨纖維等再生纖維、以及棉等天然纖維等而沒有特別限定，也能夠混合地使用這些纖維。為了提高不織布的柔軟性，較佳為將構成纖維設為捲曲纖維。又，不織布的構成纖維，也可以是親水性纖維(包含藉由親水劑而具有親水性之纖維)、疏水性纖維、或撥水性纖維(包含藉由撥水劑而具有撥水性之纖維)。又，不織布，一般會依據纖維的長度、片形成方法、纖維結合方法、積層構造來分類為短纖維不織布、長纖維不織布、紡黏不織布、熔噴不織布、水刺不織布、熱黏(熱風)不織布、針刺不織布、點黏不織布、積層不織布(在紡黏層間夾入熔噴層而成的SMS不織布、SMMS不織布等)等，也能夠使用這些不織布當中的任何不織布。Below, the details of each part are explained in order. In addition, as the nonwoven fabric in the following description, a conventional nonwoven fabric can be used appropriately according to the location and purpose. As the constituent fibers of the nonwoven fabric, in addition to olefin-based fibers such as polyethylene or polypropylene, polyester-based fibers, and polyamide-based synthetic fibers (in addition to single component fibers, composite fibers such as core-sheath fibers are also included). Regenerated fibers such as rayon and cupro fiber, and natural fibers such as cotton can also be used without particular limitation, and these fibers can also be used in mixture. In order to improve the softness of the nonwoven fabric, it is preferred that the constituent fibers be crimped fibers. Furthermore, the constituent fibers of the nonwoven fabric may be hydrophilic fibers (including fibers that are hydrophilic through a hydrophilic agent), hydrophobic fibers, or water-repellent fibers (including fibers that are water-repellent through a water-repellent agent). In addition, nonwoven fabrics are generally classified into short fiber nonwoven fabrics, long fiber nonwoven fabrics, spunbond nonwoven fabrics, meltblown nonwoven fabrics, spunlace nonwoven fabrics, and thermobonded (hot air) nonwoven fabrics based on fiber length, sheet formation method, fiber bonding method, and laminated structure. , needle-punched non-woven fabrics, spot-bonded non-woven fabrics, laminated non-woven fabrics (SMS non-woven fabrics, SMMS non-woven fabrics, etc. made by sandwiching a melt-blown layer between spun-bonded layers), etc. Any of these non-woven fabrics can also be used.
(外裝不織布) 外裝不織布12構成產品外表面，是使產品外表面成為如布般的外觀和肌膚觸感之不織布。外裝不織布的纖維單位面積的質量希望為10～50g/m2 ，特佳為15～30g/m2 。也能夠省略外裝不織布12，此時能夠將不透液性片11作成與外裝不織布12相同形狀來構成產品外表面。(Exterior non-woven fabric) The exterior non-woven fabric 12 constitutes the outer surface of the product and is a non-woven fabric that gives the outer surface of the product a cloth-like appearance and skin touch. The fiber mass per unit area of the exterior nonwoven fabric is preferably 10 to 50 g/m 2 , and particularly preferably 15 to 30 g/m 2 . The exterior nonwoven fabric 12 can also be omitted. In this case, the liquid-impermeable sheet 11 can be made into the same shape as the exterior nonwoven fabric 12 to form the outer surface of the product.
(不透液性片) 不透液性片11的原材料並無特別限定，例如可以舉出在聚乙烯和聚丙烯等烯烴系樹脂、或聚乙烯片等上積層有不織布而成的層疊不織布，在藉由防水膜來確保實質上的不透液性的不織布(此時，是由防水膜和不織布來構成不透液性片)等。當然，除此之外，也可以舉出近年來從防止濕悶的觀點受到青睞而被使用的具有不透液性和透濕性的原材料。作為此具有不透液性和透濕性的原材料的片材，例如也可以舉出在聚乙烯和聚丙烯等烯烴系樹脂中揉合無機填充劑，並成型為片材後，朝單軸或雙軸方向延伸而獲得的多微孔片。進一步，對於使用超細丹尼纖維(microdenier fiber)而成的不織布，施加防漏性強化、或者進行高吸水性樹脂、疏水性樹脂、或潑水劑的塗佈這樣的方法，藉此即便是在不使用防水膜的情況下作成的不透液性的片材，也能夠作為不透液性片11來使用，該防漏性強化是利用施加熱或壓力來使纖維的空隙變小。(Liquid-impermeable sheet) The material of the liquid-impermeable sheet 11 is not particularly limited, and examples thereof include a laminated nonwoven fabric in which a nonwoven fabric is laminated on an olefin-based resin such as polyethylene and polypropylene, or a polyethylene sheet, and is secured with a waterproof film. A substantially liquid-impermeable nonwoven fabric (in this case, the liquid-impermeable sheet is composed of a waterproof film and a nonwoven fabric), etc. Of course, in addition to these, materials having liquid impermeability and moisture permeability that have gained popularity in recent years from the viewpoint of preventing moisture and stuffiness and are used can also be cited. Examples of a sheet made of a liquid-impermeable and moisture-permeable raw material include kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene, molding it into a sheet, and then orienting it uniaxially or A microporous sheet obtained by extending in biaxial directions. Furthermore, methods such as reinforcing leakage resistance or applying super absorbent resin, hydrophobic resin, or water-repellent agent to nonwoven fabrics made of microdenier fiber can be used even in A liquid-impermeable sheet produced without using a waterproof membrane can also be used as the liquid-impermeable sheet 11. This leakage-proofing is enhanced by applying heat or pressure to reduce the gaps in the fibers.
(頂片) 頂片30，是具有透液性質之片材，例如能夠例示為有孔或無孔的不織布、及多孔性塑膠片等。頂片30的兩側部，也可以往吸收體70的背面側折返，又如圖示例，也可以不折返地自吸收體70的側緣往側方伸出。(top film) The top sheet 30 is a sheet material with liquid permeability, and can be exemplified by porous or non-porous non-woven fabrics, porous plastic sheets, etc. The two side portions of the top sheet 30 may be folded back toward the back side of the absorbent body 70, or, as shown in the figure, they may extend sideways from the side edges of the absorbent body 70 without being folded back.
頂片30，為了防止相對於背面側的構件之位置偏移等目的，希望藉由熱封、超音波密封等原材料熔接之接合手段、或熱熔黏接劑來固定到鄰接於其背面側之構件。圖示例中，頂片30藉由被塗佈於其背面之熱熔黏接劑來固定於中間片40的表面、及包裝片45之中的位於吸收體70的表面側之部分的表面。In order to prevent the top sheet 30 from being displaced relative to the member on the back side, it is desirable to fix it to the member adjacent to the back side by a joining means such as heat sealing, ultrasonic sealing or other raw material welding, or a hot melt adhesive. component. In the illustrated example, the top sheet 30 is fixed to the surface of the middle sheet 40 and the surface of the portion of the packaging sheet 45 located on the surface side of the absorbent body 70 by a hot melt adhesive applied to the back surface thereof.
(中間片) 為了使透過頂片30後的***液快速地往吸收體70側移動、及防止回滲，中間片40被接合於頂片30的背面。中間片40與頂片30之間的接合，除了使用熱熔黏接劑之外，也能夠使用熱壓紋或超音波熔接。 (intermediate film) The middle sheet 40 is joined to the back surface of the top sheet 30 in order to quickly move the excretion fluid that has passed through the top sheet 30 toward the absorber 70 side and prevent back seepage. In addition to using hot melt adhesive, heat embossing or ultrasonic welding can also be used to join the middle sheet 40 and the top sheet 30 .
作為中間片40，除了使用不織布之外，也能夠使用具有多數個透過孔之樹脂膜。作為不織布，能夠使用與頂片30同樣的原材料，若使用相較於頂片30之親水性更高、或纖維密度更高的原材料，則自頂片30往中間片40之液體移動特性優異，所以較佳。例如，作為中間片40，能夠適當地使用熱風不織布。較佳為在熱風不織布中使用芯鞘構造之複合纖維，此時作為芯而使用的樹脂可以是聚丙烯(PP)，較佳為剛性高的聚酯(PET)。單位面積的質量，較佳為17~80g/m2，更佳為25~60g/m2。不織布的原料纖維的粗度較佳為2.0~10dtex。為了使不織布蓬鬆，作為原料纖維的全部或一部分的混合纖維，較佳是使用中央無芯之偏芯纖維、中空纖維、或偏芯且中空之纖維。 As the intermediate sheet 40, in addition to using nonwoven fabric, a resin film having a plurality of transmission holes can also be used. As the nonwoven fabric, the same raw material as that of the top sheet 30 can be used. If a material with higher hydrophilicity or higher fiber density than the top sheet 30 is used, the liquid transfer characteristics from the top sheet 30 to the middle sheet 40 will be excellent. So better. For example, as the intermediate sheet 40, an air-through nonwoven fabric can be suitably used. It is preferable to use composite fibers with a core-sheath structure in the air-through nonwoven fabric. In this case, the resin used as the core can be polypropylene (PP), preferably polyester (PET) with high rigidity. The mass per unit area is preferably 17~80g/ m2 , and more preferably 25~60g/ m2 . The preferred thickness of the raw fiber of the nonwoven fabric is 2.0 to 10 dtex. In order to make the nonwoven fabric fluffy, it is preferable to use eccentric fibers with no core in the center, hollow fibers, or eccentric and hollow fibers as all or part of the mixed fibers of the raw fiber.
圖示例的中間片40，短於吸收體70的寬度且配置於中央，也可以設置為遍及整個寬度。中間片40的前後方向LD的長度，可與尿布的全長相同，也可以與吸收體70的尺寸相同，也可以在以收容液體之區域為中心的較短長度範圍內。 The intermediate sheet 40 in the illustrated example is shorter than the width of the absorber 70 and is disposed in the center. However, it may be disposed over the entire width. The length LD of the middle sheet 40 in the front-rear direction may be the same as the entire length of the diaper, the same size as the absorbent body 70, or a shorter length range centered on the liquid-containing area.
(立起皺褶) (stand up wrinkles)
為了阻止在頂片30上的***物的橫向移動並防止側漏，較佳為設置立起皺褶60，該立起皺褶60在寬度方向WD上自產品的兩側的內表面突出(立起)。 In order to prevent lateral movement of excrement on the top sheet 30 and prevent side leakage, it is preferable to provide upright pleats 60 protruding from the inner surfaces of both sides of the product in the width direction WD (upright pleats 60 rise).
此立起皺褶60，是由皺褶片62、及以沿著前後方向LD伸長的狀態被固定於此皺褶片62上之細長狀的皺褶彈性構件63所構成。能夠使用撥水性不織布來作為此皺褶片62，又能夠使用橡膠絲等來作為彈性構件63。彈性構件，除了如圖1和圖3所示地在各側設置複數條之外，也能夠在各側設置1條。 The standing gathers 60 are composed of a gather sheet 62 and an elongated gather elastic member 63 fixed to the gather sheet 62 in a state of being extended in the front-rear direction LD. Water-repellent nonwoven fabric can be used as the pleated sheet 62, and rubber yarn or the like can be used as the elastic member 63. Instead of providing a plurality of elastic members on each side as shown in FIGS. 1 and 3 , one elastic member may be provided on each side.
皺褶片62的內表面，在頂片30的側部上具有寬度方向WD的黏固起點，自此黏固起點往寬度方向WD外側的部分，藉由熱熔黏接劑等被黏固於不透液性片11的側部及位於該部分之外裝不織布12的側部。 The inner surface of the pleated sheet 62 has a bonding starting point in the width direction WD on the side of the top sheet 30, and the portion outward from the bonding starting point in the width direction WD is bonded to the top sheet 30 with a hot melt adhesive or the like. The side parts of the liquid-impermeable sheet 11 and the side parts of the exterior nonwoven fabric 12 located in this part.
在腿圍中，比立起皺褶60的黏固起點更靠寬度方向WD的內側，在產品前後方向的兩端部被固定在頂片30上，其間的部分是非固定的自由部分，此自由部分藉由彈性構件63的收縮力而立起。當尿布的穿著時，尿布呈船型而被穿著於身體上，而且彈性構件63的收縮力發揮作用，所以藉由彈性構件63的收縮力而使立起皺褶60立起並密合至腿圍。其結果，可防止自腿圍發生的所謂的側漏。 In the leg circumference, the two ends in the width direction WD are fixed to the top sheet 30 at both ends of the product in the front-rear direction of the product, and the part in between is a non-fixed free part. The portion is erected by the contraction force of the elastic member 63 . When the diaper is worn, the diaper is in a boat shape and is worn on the body, and the contraction force of the elastic member 63 is exerted, so the erected pleats 60 are erected and tightly fitted to the leg circumference by the contraction force of the elastic member 63 . As a result, so-called side leakage from the leg circumference can be prevented.
與圖示例不同，也能夠將在皺褶片62的寬度方向WD的內側的部分中的前後方向LD的兩端部，固定成具有基端側部分和前端側部分之對折狀態，並將其間的部分作成非固定的自由部分，該基端側部分自寬度方向WD的外側的部分往內側延伸，該前端側部分自此基端部部分的寬度方向WD的中央側的端緣往身體側折返並往寬度方向WD的外側延伸。Unlike the illustrated example, it is also possible to fix the two ends in the front-rear direction LD of the part inside the width direction WD of the pleat sheet 62 in a folded state having a base end side part and a front end side part, and place them in between. The part is made into a non-fixed free part, the base end side part extends inward from the outer part in the width direction WD, and the front end side part is folded back toward the body side from the center side edge of the base end part in the width direction WD. and extends outward in the width direction WD.
(平面皺褶) 在各側翼SF，如圖1～圖3所示，在皺褶片62的黏固部分之中的黏固起點附近的寬度方向WD的外側，且在皺褶片62與不透液性片11之間，以沿著前後方向伸長的狀態固定有由橡膠絲等細長狀的彈性構件所構成的腿圍彈性構件64，藉此將各側翼SF的腿圍部分構成為平面皺褶。腿圍彈性構件64，也能夠被配置在側翼SF中的不透液性片11與外裝不織布12之間。腿圍彈性構件64，除了如圖示例般在各側設置複數條之外，也能夠在各側僅設置1條。(Plane wrinkles) In each side flap SF, as shown in FIGS. 1 to 3 , it is located outside the width direction WD near the starting point of adhesion among the adhered portions of the pleated sheet 62 , and between the pleated sheet 62 and the liquid-impermeable sheet 11 Between them, leg elastic members 64 made of elongated elastic members such as rubber threads are fixed in a state of being extended in the front-rear direction, whereby the leg portion of each side panel SF is formed into a flat pleat. The leg elastic members 64 can also be arranged between the liquid-impermeable sheet 11 and the exterior nonwoven fabric 12 in the side panel SF. Instead of providing a plurality of leg elastic members 64 on each side as in the illustrated example, only one leg elastic member 64 may be provided on each side.
(緊固帶) 如圖1、圖2及圖6所示，緊固帶13，具有片基材和卡止部13A，該片基材是由被固定於尿布的側部之帶安裝部13C、及自此帶安裝部13C突出的帶本體部13B構成，該卡止部13A被設置於此片基材中的帶本體部13B的寬度方向WD的中間部且面對腹側，比此卡止部13A更靠前端側的部分作成捏持部。緊固帶13的帶安裝部13C，被夾在側翼SF中的構成內側層之皺褶片62與構成外側層之外裝不織布12之間，且藉由熱熔黏接劑而被黏接於這些片上。又，卡止部13A藉由黏接劑而被固定於片基材上。(fastening strap) As shown in FIGS. 1 , 2 and 6 , the fastening tape 13 has a sheet base material and a locking part 13A. The sheet base material is composed of a tape attachment part 13C fixed to the side part of the diaper, and a tape attaching part 13C fixed thereto. The mounting portion 13C is formed by protruding the belt body portion 13B, and the locking portion 13A is provided in the middle portion of the belt body portion 13B in the width direction WD of the sheet base material and faces the ventral side, and is closer than the locking portion 13A. The portion on the front end side serves as a gripping portion. The belt mounting portion 13C of the fastening belt 13 is sandwiched between the pleat sheet 62 constituting the inner layer and the outer nonwoven fabric 12 constituting the outer layer in the side flap SF, and is bonded to the belt with a hot melt adhesive. on these pieces. In addition, the locking portion 13A is fixed to the sheet base material with an adhesive.
作為卡止部13A，機械性緊固件(黏扣帶)的鉤材(凸件)是適當的。鉤材在其外表面側上具有多個卡合突起。作為卡合突起的形狀，存在有日文レ字状、J字状、蘑菇狀、T字狀、雙J字狀(使J字狀的結構背對背地結合而成的形狀)等，也可以是任意的形状。當然，也能夠設置黏接材層來作為緊固帶13的卡止部。As the locking portion 13A, a hook material (projection) of a mechanical fastener (hook and fastener) is suitable. The hook material has a plurality of engaging protrusions on its outer surface side. As the shape of the engagement protrusion, there are Japanese H-shaped, J-shaped, mushroom-shaped, T-shaped, double J-shaped (a shape in which J-shaped structures are joined back to back), etc., and may be any shape. shape. Of course, an adhesive material layer can also be provided as a locking portion of the fastening band 13 .
又，作為形成從帶安裝部13C至帶本體部13B為止的片基材，除了使用紡黏不織布、熱風不織布、水刺不織布等各種不織布之外，也能夠使用塑膠膜、複合層壓不織布、紙、或這些的複合材料。In addition, as the sheet base material forming the belt mounting part 13C to the belt main part 13B, in addition to using various nonwoven fabrics such as spunbond nonwoven fabric, air-through nonwoven fabric, spunlace nonwoven fabric, plastic film, composite laminated nonwoven fabric, paper, etc., it is also possible to use , or composite materials of these.
(靶片) 較佳為在腹側部分F中的緊固帶13的卡止處所設置靶片12T，該靶片12T具有使卡止變容易的靶。當卡止部13A是鉤材時，靶片12T能夠使用一種在由塑膠膜或不織布構成的片基材的表面上設置有多數個環狀(loop)絲，以供鉤材的卡合突起纏住之靶片；又當該卡止部13A是黏接材層時，靶片12T能夠使用一種其富有黏接性的表面是對由平滑的塑膠膜所構成的片基材的表面上實施剝離處理而成者。又，當腹側部分F中的緊固帶13的卡止處所是由不織布構成時，例如圖示例的外裝不織布12是由不織布構成的情況，且當緊固帶13的卡止部13A是是鉤材時，也能夠省略靶片12T，並使鉤材纏住並卡止於外裝不織布12的不織布。此時，也可以將靶片12T設置在外裝不織布12與不透液性片11之間。(target film) It is preferable to provide a target piece 12T having a target that facilitates the locking of the fastening band 13 in the abdominal part F. When the locking part 13A is a hook material, the target sheet 12T can use a sheet base material made of plastic film or non-woven fabric with a plurality of loop wires provided on the surface for the engaging protrusions of the hook material to wrap around. The target piece is held; and when the locking portion 13A is an adhesive material layer, the target piece 12T can use a surface rich in adhesiveness to peel off the surface of the sheet base material composed of a smooth plastic film. processed. Furthermore, when the locking portion of the fastening belt 13 in the abdominal portion F is made of nonwoven fabric, for example, the exterior nonwoven fabric 12 in the illustrated example is made of nonwoven fabric, and when the locking portion 13A of the fastening belt 13 In the case of a hook material, the target piece 12T can also be omitted, and the hook material can be wrapped around and locked in the non-woven fabric of the exterior non-woven fabric 12 . At this time, the target sheet 12T may be provided between the exterior nonwoven fabric 12 and the liquid-impermeable sheet 11 .
(吸收體) 吸收體70，如圖1、圖3、圖5、圖15及圖16所示，是吸收並保持***物的液體成分之部分，具有被設置於最上部之上輔助層71、及被設置於該上輔助層71的背面側之主吸收層72。圖16，是為了容易理解而分離地表示圖15的吸收體70的層構造之圖。吸收體70，能夠藉由熱熔黏接劑等黏接劑50h來黏接到位於其表面和背面的至少一側的構件上。(Absorbent) The absorbent body 70, as shown in FIGS. 1, 3, 5, 15, and 16, is a part that absorbs and retains the liquid component of excreta, and has an auxiliary layer 71 provided on the uppermost part, and an auxiliary layer 71 provided on the uppermost part. The main absorption layer 72 is located on the back side of the upper auxiliary layer 71 . FIG. 16 is a diagram showing the layer structure of the absorber 70 in FIG. 15 in a separated manner for easy understanding. The absorber 70 can be bonded to a member located on at least one side of its front surface and back surface using an adhesive 50h such as a hot melt adhesive.
(上輔助層) 上輔助層71具有高吸水不織布42，該高吸水不織布42的表面露出於吸收體70的最頂面且其KLEMM(克萊姆)吸水度為100mm以上。此高吸水不織布42，即便對於黏性液，也能夠迅速地加以吸收並擴散。因此，能夠顯著地提升吸收體70對於黏性液的吸收性。高吸水不織布42，特佳是KLEMM吸水度為130mm以上。又，高吸水不織布42的KLEMM吸水度的上限沒有特別限定，較佳為180mm的程度，特佳為160mm的程度。(upper auxiliary layer) The upper auxiliary layer 71 has a highly water-absorbent nonwoven fabric 42 whose surface is exposed on the top surface of the absorbent body 70 and whose KLEMM water absorption is 100 mm or more. This highly water-absorbent nonwoven fabric 42 can quickly absorb and spread even viscous liquids. Therefore, the absorbency of the absorbent body 70 for viscous liquid can be significantly improved. Highly water-absorbent non-woven fabric 42, especially KLEMM with a water absorption of 130mm or more. In addition, the upper limit of the KLEMM water absorption of the highly water-absorbent nonwoven fabric 42 is not particularly limited, but it is preferably about 180 mm, and particularly preferably about 160 mm.
上輔助層71的高吸水不織布42的負荷下保水量，較佳為大於0g且0.15g以下，特佳為大於0g且0.12g以下。上輔助層71的高吸水不織布42的無負荷下保水量，較佳為大於0g且0.7g以下，特佳為大於0g且0.3g以下。The water retention capacity under load of the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 is preferably greater than 0 g and not more than 0.15 g, particularly preferably greater than 0 g and not more than 0.12 g. The water retention capacity under no load of the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 is preferably greater than 0 g and less than 0.7 g, particularly preferably greater than 0 g and less than 0.3 g.
高吸水不織布42，其原材料和製法沒有限定，較佳為濕式不織布(濕式水刺不織布)，該濕式不織布包含50%以上的紙漿纖維或人造絲纖維且單位面積的質量為25～50g/m2 。除了紙漿纖維或人造絲纖維之外的纖維，能夠使用聚乙烯或聚丙烯等烯烴系、聚酯系、以及聚醯胺系等合成纖維(除了單成分纖維之外，也包含芯鞘等複合纖維)。若使用這種濕式不織布，則藉由微小的纖維間隙產生的毛細管現象，能夠迅速地吸收並擴散黏性液，所以較佳。特別是，這種濕式不織布不僅KLEMM吸水度高，且非常薄且柔軟，所以能夠抑制整個吸收體70的柔軟性的降低和厚度的增加。高吸水不織布42的厚度沒有特別限定，當是上述單位面積的質量時，較佳為0.13～0.48mm的程度。The raw material and production method of the highly water-absorbent non-woven fabric 42 are not limited. Preferably it is a wet-laid non-woven fabric (wet-laid spunlace non-woven fabric). The wet-laid non-woven fabric contains more than 50% of pulp fibers or rayon fibers and has a mass per unit area of 25 to 50 g. /m 2 . In addition to fibers other than pulp fibers or rayon fibers, synthetic fibers such as olefin-based fibers such as polyethylene or polypropylene, polyester-based fibers, and polyamide-based fibers can be used (in addition to single-component fibers, composite fibers such as core-sheath fibers are also included. ). It is preferable to use this kind of wet-laid nonwoven fabric because it can quickly absorb and spread viscous liquid through the capillary phenomenon caused by the tiny fiber gaps. In particular, this kind of wet-laid nonwoven fabric not only has high KLEMM water absorption but is also very thin and soft, so it can suppress the decrease in flexibility and increase in thickness of the entire absorbent body 70 . The thickness of the highly water-absorbent nonwoven fabric 42 is not particularly limited, but when it is the mass per unit area mentioned above, it is preferably about 0.13 to 0.48 mm.
又，作為高吸水不織布42，如圖18所示，特別適合為具有支持層42b和紙漿層42a之兩層、或三層以上的不織布，該支持層42b包含合成樹脂的長纖維，該紙漿層42a位於最表面側且僅由紙漿纖維所構成。這種高吸水不織布42，能夠藉由紙漿層42a來提高KLEMM吸水度，並且藉由支持層42b的存在來提高強度，所以當設置於吸收體70的最上部時的耐久性成為優異。In addition, as the highly water-absorbent nonwoven fabric 42, as shown in FIG. 18, a nonwoven fabric having two layers, or three or more layers, of a support layer 42b containing long fibers of synthetic resin and a pulp layer 42a is particularly suitable. 42a is located on the outermost surface side and is composed only of pulp fibers. This highly water-absorbent nonwoven fabric 42 can increase the KLEMM water absorption by the pulp layer 42a and improve the strength by the presence of the support layer 42b. Therefore, it has excellent durability when it is installed at the uppermost part of the absorbent body 70.
上輔助層71，若具有鄰接於高吸水不織布42的背面之第一高吸收性聚合物粒子43，則如圖17(a)的箭頭標誌所示，能夠將藉由高吸水不織布所吸收並擴散後的黏性液N，逐漸地利用鄰接於高吸水不織布42的背面側之高吸收性聚合物粒子來吸收並保持。藉此，能夠顯著地提升對於黏性液N的吸收性。特別是，若上輔助層71的高吸水不織布42是前述濕式不織布，則往鄰接於其背面之第一高吸收性聚合物粒子43之黏性液N的傳遞成為順暢，所以較佳。If the upper auxiliary layer 71 has the first super-absorbent polymer particles 43 adjacent to the back surface of the super-absorbent non-woven fabric 42, as shown by the arrow mark in Figure 17(a), the particles 43 absorbed by the super-absorbent non-woven fabric can be absorbed and diffused. The resulting viscous liquid N is gradually absorbed and retained by the superabsorbent polymer particles adjacent to the back side of the superabsorbent nonwoven fabric 42 . Thereby, the absorbency of the viscous liquid N can be significantly improved. In particular, it is preferable if the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 is the aforementioned wet-laid nonwoven fabric because the transmission of the viscous liquid N to the first highly absorbent polymer particles 43 adjacent to the back surface becomes smooth.
上輔助層71的高吸水不織布42的尺寸和配置能夠適當地規定。例如圖示例所示，高吸水不織布42也可以配置成覆蓋主吸收層72的整個表面，也可以配置成僅覆蓋主吸收層72的表面的一部分，例如前端部、後端部、中央部或這些之中的複數個處所。又，高吸水不織布42，也可以具有自主吸收層72的周緣伸出的部分，高吸水不織布42的周緣的一部分或全部，也可以比主吸收層72的周緣距中央側更遠。通常的情況，希望上輔助層71的高吸水不織布42，覆蓋主吸收層72的90%以上的面積。The size and arrangement of the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 can be appropriately determined. For example, as shown in the figure, the highly water-absorbent nonwoven fabric 42 may be configured to cover the entire surface of the main absorbent layer 72 , or may be configured to cover only a part of the surface of the main absorbent layer 72 , such as the front end, the rear end, the central part, or Several places among these. Furthermore, the highly water-absorbent nonwoven fabric 42 may have a portion protruding from the peripheral edge of the main absorbent layer 72 , and part or all of the peripheral edge of the highly water-absorbent nonwoven fabric 42 may be farther from the center side than the peripheral edge of the main absorbent layer 72 . Normally, it is desired that the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 covers more than 90% of the area of the main absorbent layer 72 .
具有第一高吸收性聚合物粒子43之區域的尺寸和配置能夠適當地規定。例如圖示例所示，第一高吸收性聚合物粒子43，也可以配置在高吸水不織布42與主吸收層72重疊的整個區域中，也可以置在高吸水不織布42與主吸收層72重疊的區域的一部分中，例如前端部、後端部、中央部或這些之中的複數個處所。通常的情況，希望具有第一高吸收性聚合物粒子43之區域，佔據主吸收層72的83%以上的面積。The size and arrangement of the area with the first superabsorbent polymer particles 43 can be appropriately specified. For example, as shown in the figure, the first highly absorbent polymer particles 43 may be disposed in the entire area where the highly absorbent nonwoven fabric 42 overlaps the main absorbent layer 72 , or may be placed where the highly absorbent nonwoven fabric 42 overlaps the major absorbent layer 72 In a part of the area, such as the front end, the rear end, the center, or a plurality of these places. Normally, it is desirable that the area with the first highly absorbent polymer particles 43 occupies more than 83% of the area of the main absorbent layer 72 .
第一高吸收性聚合物粒子43，也可以不被固定在高吸水不織布42上，更佳為被固定於其上。第一高吸收性聚合物粒子43，例如能夠藉由以間歇性圖案被塗佈於高吸水不織布42的背面上之熱熔黏接劑等黏接劑42h而黏接在高吸水不織布42上。The first highly absorbent polymer particles 43 do not need to be fixed on the highly water-absorbent nonwoven fabric 42, but are preferably fixed thereon. The first super-absorbent polymer particles 43 can be bonded to the super-absorbent non-woven fabric 42 by, for example, an adhesive 42h such as a hot-melt adhesive applied to the back surface of the super-absorbent non-woven fabric 42 in an intermittent pattern.
第一高吸收性聚合物粒子43，也可以沒有固定地僅接觸主吸收層72的表面，也可以固定。例如，能夠將熱熔黏接劑等黏接劑43h以間歇性圖案塗佈於主吸收層72的表面上之後，將第一高吸收性聚合物粒子43散佈於該塗佈部分上，進一步在其上隔著或不隔著黏接劑42h地配置高吸水不織布42。The first highly absorbent polymer particles 43 may only contact the surface of the main absorbent layer 72 without being fixed, or may be fixed. For example, the adhesive 43h such as hot melt adhesive can be applied on the surface of the main absorbent layer 72 in an intermittent pattern, and then the first highly absorbent polymer particles 43 can be spread on the coated portion, and further A highly water-absorbent nonwoven fabric 42 is disposed thereon with or without an adhesive 42h.
第一高吸收性聚合物粒子43的單位面積的質量能夠適當地規定，若假設是泥狀糞便或水狀糞便、軟便中的液體成分般的一下子需要吸收的量較少的黏性液，則較佳為50～150g/m2 ，特佳為50～100g/m2 。若第一高吸收性聚合物粒子43的單位面積的質量未滿50g/m2 ，則即便是少量的黏性液可能也不易充分地吸收。又，若第一高吸收性聚合物粒子43的單位面積的質量超過150g/m2 ，則當要吸收尿等多量的非黏性液時，第一高吸收性聚合物粒子43在充分地吸收並膨脹之後會發生凝膠阻塞，阻礙非黏性液供給到主吸收層72的可能性會提高。相對於此，若在上述範圍內，則即便第一高吸收性聚合物粒子43在充分地吸收並膨脹之後，仍有殘留沒有發生凝膠阻塞的部分，可確保使非黏性液供給到主吸收層72，所以較佳。The mass per unit area of the first high-absorbent polymer particles 43 can be appropriately determined. If a small amount of viscous fluid needs to be absorbed at once, such as muddy stool, watery stool, or liquid components in soft stool, The preferred range is 50 to 150g/m 2 , and the particularly preferred range is 50 to 100g/m 2 . If the mass per unit area of the first high-absorbent polymer particles 43 is less than 50 g/m 2 , even a small amount of viscous liquid may not be fully absorbed. Furthermore, if the mass per unit area of the first super-absorbent polymer particles 43 exceeds 150 g/m 2 , when a large amount of non-viscous liquid such as urine is to be absorbed, the first super-absorbent polymer particles 43 must fully absorb the liquid. And after swelling, gel clogging will occur, which will increase the possibility of hindering the supply of non-viscous liquid to the main absorbent layer 72. On the other hand, if it is within the above range, even after the first super-absorbent polymer particles 43 are fully absorbed and expanded, there will still be a portion where gel clogging has not occurred, and the supply of non-viscous liquid to the main body can be ensured. Absorption layer 72, so it is better.
從確保非黏性液U供給到主吸收層72的觀點來看，第一高吸收性聚合物粒子43的量，如圖15～圖17所示，較佳為設置成在寬度方向WD(寬度方向WD、前後方向LD及斜向的至少一方即可)反復地增減。藉此，如圖17(a)所示，能夠將被固定於上片51的頂面上之第一高吸收性聚合物粒子43有效地利用於黏性液N的吸收，並且如圖17(b)所示，即使當非黏性液U的吸收時使得第一高吸收性聚合物粒子43充分地吸收並膨脹之後，在第一高吸收性聚合物粒子43的量較少的部分(包含如圖示例中沒有的部分)特別不易發生凝膠阻塞，而特別不易阻礙非黏性液U供給到主吸收層72。From the viewpoint of ensuring the supply of the non-viscous liquid U to the main absorbent layer 72, the amount of the first super absorbent polymer particles 43 is preferably set in the width direction WD (width direction WD) as shown in FIGS. 15 to 17 At least one of the direction WD, the front-rear direction LD and the oblique direction can be repeatedly increased or decreased. Thereby, as shown in Figure 17(a) , the first highly absorbent polymer particles 43 fixed on the top surface of the upper sheet 51 can be effectively used to absorb the viscous liquid N, and as shown in Figure 17(a) As shown in b), even after the first super-absorbent polymer particles 43 are fully absorbed and expanded by the absorption of the non-viscous liquid U, the small amount of the first super-absorbent polymer particles 43 (including (Parts not shown in the example) are particularly unlikely to cause gel clogging, and are particularly unlikely to hinder the supply of the non-viscous liquid U to the main absorbent layer 72 .
其一個較佳例，在主吸收層72的上片51的頂面，以交互地反復的方式設置有第一部分P1和第二部分P2，該第一部分P1中的前述第一高吸收性聚合物粒子43的單位面積的質量未滿150g/m2 (更佳為未滿100g/m2 )，該第二部分中P2的前述第一高吸收性聚合物粒子43的單位面積的質量超過150g/m2 (更佳為超過100g/m2 )。此時，第一高吸收性聚合物粒子43的單位面積的質量未滿150g/m2 (更佳為未滿100g/m2 )，是指包含零，亦即沒有固定有第一高吸收性聚合物粒子43的情況。又，第一部分P1和第二部分P2中的第一高吸收性聚合物粒子43的各單位面積的質量，當然是將第一部分P1和第二部分P2中的總單位面積的質量決定為在50～150g/m2 (更佳為50～100g/m2 )的範圍內。此時，如圖17(b)的箭頭標誌所示，即使當非黏性液U的吸收時使得第一高吸收性聚合物粒子43充分地吸收並膨脹之後，在第一部分P1不易發生凝膠阻塞，所以特別不易阻礙非黏性液U供給到主吸收層72。而且，也具有第一高吸收性聚合物粒子43的單位面積的質量較多的第二部分P2，所以也能夠充分地確保對於黏性液N的吸收量。A preferred example is that a first part P1 and a second part P2 are provided on the top surface of the upper sheet 51 of the main absorbent layer 72 in an alternating and repeated manner. The aforementioned first high-absorbent polymer in the first part P1 The mass per unit area of the particles 43 is less than 150 g/m 2 (more preferably less than 100 g/m 2 ), and the mass per unit area of the first highly absorbent polymer particles 43 in P2 in the second part exceeds 150 g/m 2 m 2 (better is more than 100g/m 2 ). At this time, the mass per unit area of the first highly absorbent polymer particles 43 is less than 150 g/m 2 (more preferably less than 100 g/m 2 ), which means that it includes zero, that is, the first highly absorbent polymer particle is not fixed. The case of polymer particles 43. Furthermore, the mass per unit area of the first super absorbent polymer particles 43 in the first part P1 and the second part P2 is, of course, determined so that the total mass per unit area in the first part P1 and the second part P2 is 50 ~150g/m 2 (more preferably 50 ~ 100g/m 2 ). At this time, as shown by the arrow mark in FIG. 17( b ), even after the first super-absorbent polymer particles 43 are fully absorbed and expanded by the absorption of the non-viscous liquid U, gelation is unlikely to occur in the first portion P1 Since it is clogged, it is particularly difficult to hinder the supply of the non-viscous liquid U to the main absorbent layer 72 . Furthermore, since the second portion P2 having a larger mass per unit area of the first super-absorbent polymer particles 43 is also provided, a sufficient amount of absorption of the viscous liquid N can also be ensured.
第一部分P1和第二部分P2的配置形狀能夠適當地規定，較佳為如圖19所示的各種配置例，將第一部分P1和第二部分P2的任一方設置為縱條紋狀、橫條紋狀、格子狀。自製造容易性的觀點來看，特佳為在第一部分P1中不設置第一高吸收性聚合物粒子43。此時，自製造容易性的觀點來看，較佳為將第二部分P2作成縱條紋狀，並在前後方向LD和寬度方向WD上分別地隔開間隔地將第二部分P2配列成行列狀。The arrangement shape of the first part P1 and the second part P2 can be determined appropriately, and various arrangement examples as shown in FIG. 19 are preferred. Either the first part P1 or the second part P2 is arranged in a vertical stripe shape or a horizontal stripe shape. , grid shape. From the viewpoint of manufacturing ease, it is particularly preferable not to provide the first super absorbent polymer particles 43 in the first portion P1. At this time, from the viewpoint of ease of manufacturing, it is preferable to form the second portions P2 in a vertical stripe shape and to arrange the second portions P2 in rows and columns at intervals in the front-rear direction LD and the width direction WD. .
第一部分P1和第二部分P2的尺寸能夠適當地規定，較佳為如圖19(a)、圖19(c)、圖19(d)所示的例子，當將第一部分P1和第二部分P2配置成在寬度方向WD上交互地反復時，第一部分P1的寬度方向WD的尺寸W1為5～10mm，第二部分P2的寬度方向WD的尺寸W2為5～10mm。。The dimensions of the first part P1 and the second part P2 can be appropriately specified, preferably as shown in Figure 19(a), Figure 19(c), and Figure 19(d). When the first part P1 and the second part When P2 is arranged to alternately repeat in the width direction WD, the dimension W1 of the first part P1 in the width direction WD is 5 to 10 mm, and the dimension W2 of the second part P2 in the width direction WD is 5 to 10 mm. .
第一高吸收性聚合物粒子43的附著量(單位面積的質量)，在第一部分P1和第二部分P2中，也可以分別地固定，也可以改變。例如，也可以是在第一部分P1內隨著越朝向第二部分P2，第一高吸收性聚合物粒子43的附著量連續性(或也可以是階段性)地增加。又，也可以是在第二部分P2內隨著越朝向第一部分P1，第一高吸收性聚合物粒子43的附著量連續性(或也可以是階段性)地減少。較佳為在第一部分P1的至少一部分存在有不具有第一高吸收性聚合物粒子43之部分，但是也可以在遍及整個第一部分P1都存在有第一高吸收性聚合物粒子43。The adhesion amount (mass per unit area) of the first high-absorbent polymer particles 43 may be fixed separately in the first part P1 and the second part P2, or may be changed. For example, the adhesion amount of the first super absorbent polymer particles 43 may be continuously (or may be stepwise) increased in the first part P1 toward the second part P2. In addition, the adhesion amount of the first super absorbent polymer particles 43 may be continuously (or may be stepwise) reduced in the second part P2 toward the first part P1. It is preferable that a portion without the first super-absorbent polymer particles 43 exists in at least a part of the first portion P1, but the first super-absorbent polymer particles 43 may be present throughout the entire first portion P1.
(主吸收層) 主吸收層72，能夠使用如圖示例般的胞室吸收片50，該胞室吸收片50具有：多數個胞室55(小室)，是其周圍藉由具有透液性的上片51與下片52的接合部54來包圍且上片51與下片52沒有接合之部分；及，粉粒體，其包含在此胞室55內包含的第二高吸收性聚合物粒子53。胞室吸收片50的吸收性能，取決於第二高吸收性聚合物粒子53，所以必然會成為吸收速度變慢，對於黏性液N的吸收性低之片材。因此當將這種胞室吸收片50作為主吸收層72時，前述上輔助層71具有特別的意義。(Main absorption layer) The main absorbent layer 72 can use a cell-absorbent sheet 50 as shown in the figure. The cell-absorbent sheet 50 has a plurality of cells 55 (small cells), which are surrounded by a liquid-permeable upper sheet 51 and The joining portion 54 of the lower sheet 52 surrounds the portion where the upper sheet 51 and the lower sheet 52 are not joined; and, a powder body including the second highly absorbent polymer particles 53 contained in the cell 55 . The absorption performance of the cell absorbent sheet 50 depends on the second highly absorbent polymer particles 53, so the absorption speed is inevitably slow and the absorbency of the viscous liquid N is low. Therefore, when this cell absorbent sheet 50 is used as the main absorbent layer 72, the aforementioned upper auxiliary layer 71 has special significance.
針對胞室吸收片50進一步詳細地說明。如圖7和圖15的放大表示，此胞室吸收片50，具有：上片51；下片52，其被配置於該上片51的背面側；胞室55(小室)，是其周圍藉由上片51與下片52的接合部54來包圍，且上片51與下片52的非接合部分；及，第二高吸收性聚合物粒子53，其被包含在此胞室55內。胞室55隔開對應於接合部54的寬度地配列有多數個。這樣一來，多數個胞室55，藉由接合部54來包圍其整個周圍，在該胞室55中分配地保持有第二高吸收性聚合物粒子53，藉此能夠防止在胞室吸收片50中的第二高吸收性聚合物粒子53的分佈不均勻。The cell absorbent sheet 50 will be described in further detail. As shown in an enlarged manner in FIGS. 7 and 15 , the cell absorbent sheet 50 has an upper sheet 51 , a lower sheet 52 disposed on the back side of the upper sheet 51 , and cells 55 (small cells) surrounding the upper sheet 51 . Surrounded by the joint portion 54 of the upper sheet 51 and the lower sheet 52, and the non-joined portion of the upper sheet 51 and the lower sheet 52; and, second highly absorbent polymer particles 53, which are contained in this cell 55. A plurality of cells 55 are arranged at intervals corresponding to the width of the joint portion 54 . In this way, the plurality of cells 55 are surrounded by the joints 54 and the second highly absorbent polymer particles 53 are distributed and held in the cells 55, thereby preventing the absorption sheet from being absorbed by the cells. The distribution of the second superabsorbent polymer particles 53 in 50 is uneven.
為了在製造時容易配置第二高吸收性聚合物粒子53、及確保吸收並膨脹後的容積，較佳為胞室55中的上片51和下片52的至少一方在展開狀態下於胞室55的外側成為凹陷的凹部50c，也可以不具有凹部50c，而僅是將第二高吸收性聚合物粒子53夾在上片51與下片52之間。In order to facilitate the placement of the second super-absorbent polymer particles 53 during production and to ensure the volume after absorption and expansion, it is preferred that at least one of the upper sheet 51 and the lower sheet 52 in the cell 55 is in the expanded state in the cell. The outer side of 55 becomes a recessed portion 50c, and the recessed portion 50c may not be provided, but the second highly absorbent polymer particles 53 may be sandwiched between the upper sheet 51 and the lower sheet 52.
凹部50c，能夠藉由對於對象片實施壓紋加工來形成。又，藉由此壓紋加工，在對象片中的位於各胞室55之部分，形成往外側膨起的凸部50p。也就是說，若藉由壓紋加工來在上片51上形成凹部50c，則在上片51中的位於各胞室55之部分，形成往上側膨起的凸部50p。凹部50c的深度沒有特別限定，較佳為1.0～7.0mm，特佳為1.0～5.0mm的程度。The recessed portion 50c can be formed by embossing the target sheet. Moreover, by this embossing process, the convex part 50p which bulges outward is formed in the part located in each cell 55 of the object sheet. That is, if the recessed portion 50c is formed in the upper sheet 51 by embossing, a convex portion 50p that bulges upward is formed in the portion of the upper sheet 51 located in each cell 55. The depth of the recessed portion 50c is not particularly limited, but is preferably about 1.0 to 7.0 mm, particularly preferably about 1.0 to 5.0 mm.
能夠適當地規定凸部50p的尺寸，自此觀點，上片51的凸部50p的前後方向LD的尺寸55L較佳是6～30mm，上片51的凸部50p的寬度方向WD的尺寸55W較佳是7～50mm，接合部54的寬度54W較佳為1.0～1.8mm，上片51的谷部的深度50d(凸部50p的高度)較佳為1.0～7.0mm。The size of the convex portion 50p can be appropriately determined. From this point of view, the dimension 55L in the front-rear direction LD of the convex portion 50p of the upper sheet 51 is preferably 6 to 30 mm, and the dimension 55W of the convex portion 50p of the upper sheet 51 in the width direction WD is preferably 6 to 30 mm. It is preferably 7 to 50 mm, the width 54W of the joint portion 54 is preferably 1.0 to 1.8 mm, and the depth 50d of the valley portion of the upper sheet 51 (the height of the convex portion 50p) is preferably 1.0 to 7.0 mm.
凹部50c，也可以如圖13(c)和圖14(c)所示，被形成在上片51中的構成各胞室55的部分，但是若在上片51設置這種凹部50c，則會在上片51的頂面形成凸部50p而不易與上輔助層71的高吸水不織布42密合(容易產生間隙)，可能阻礙自高吸水不織布42往第一高吸收性聚合物粒子43之黏性液N的傳遞。因此，如圖13(a)、圖13(b)及圖14(a)、圖14(b)所示，若在上片51上不形成凹部50c(也就是具有未實施賦形加工而平坦的頂面)，且在下片52中的構成各胞室55的部分形成凹部50c，則可藉由下片52的凹部50c來確保第二高吸收性聚合物粒子53的膨脹容積，並且上片51的頂面和被配置於該處之第一高吸收性聚合物粒子43容易與上輔助層71的高吸水不織布42密合，成為不易阻礙自高吸水不織布42往第一高吸收性聚合物粒子43之黏性液N的傳遞之吸收性物品。 The recessed portion 50c may be formed in the portion of the upper sheet 51 constituting each cell 55 as shown in FIGS. 13(c) and 14(c) . However, if such a recessed portion 50c is provided in the upper sheet 51, The protrusions 50p formed on the top surface of the upper sheet 51 are difficult to adhere to the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71 (gaps are easily generated), and may hinder the adhesion from the highly water-absorbent nonwoven fabric 42 to the first highly absorbent polymer particles 43. Transfer of sexual fluids N. Therefore, as shown in FIGS. 13(a) and 13(b) and 14(a) and 14(b) , if the recess 50c is not formed on the upper sheet 51 (that is, if the upper sheet 51 has a flat surface without any shaping process, ), and a recess 50c is formed in the portion constituting each cell 55 in the lower sheet 52, the expansion volume of the second highly absorbent polymer particles 53 can be ensured by the recess 50c of the lower sheet 52, and the upper sheet can The top surface of 51 and the first super-absorbent polymer particles 43 disposed there are easily in close contact with the super-absorbent non-woven fabric 42 of the upper auxiliary layer 71, making it difficult to hinder the flow from the super-absorbent non-woven fabric 42 to the first super-absorbent polymer. Absorbent articles for the transfer of viscous liquid N with particles 43.
另一方面，如圖7(b)和圖13(a)等所示，較佳為在上片51與下片52之間，存在有由不織布構成的中片80，也可以如圖14(b)所示，不設置中片80。當設置中片80時，在接合部54中，接合上片51、中片80及下片52的三層。又，中片80，較佳為其位於接合部54中的部分，在厚度方向被壓縮，並且位於胞室55內的部分，其膨脹到凹部50c內(換句話說，纖維密度越遠離接合部54越降低)。藉此，在產品的包裝狀態下施加的壓力或穿著時施加的壓力，不容易壓潰凹部50c(因此也不容易壓潰凸部)，且即便壓潰了，藉由中片80的彈性也會促進形狀復原到至少中片80進入的部分或近乎該部分之容積。再者，高吸收性聚合物，在吸收***液時會擴大中片80的纖維間隙並進入其間，並且或許會因為可容易地壓縮中片80、或許會因為壓縮該中片80並進入其纖維間隙而膨脹，所以中片80的存在不易阻礙第二高吸收性聚合物粒子53的膨脹。進一步，在凹部50c內擴展的中片80的纖維，可確保往各個第二高吸收性聚合物粒子53的液體流路，所以在第二高吸收性聚合物粒子53開始膨脹之後也可抑制擴散性的降低，使得凝膠阻塞不易發生。因此，藉由這些協同作用，可改善具備本胞室吸收片50之拋棄式尿布的吸收速度(特別是吸收初期)。On the other hand, as shown in FIG. 7(b) and FIG. 13(a) , it is preferable that there is a middle sheet 80 made of nonwoven fabric between the upper sheet 51 and the lower sheet 52. Alternatively, as shown in FIG. 14( As shown in b), the middle piece 80 is not set. When the middle sheet 80 is provided, the three layers of the upper sheet 51 , the middle sheet 80 and the lower sheet 52 are joined to each other in the joint part 54 . In addition, the middle sheet 80, preferably the portion located in the joint portion 54, is compressed in the thickness direction, and the portion located in the cell 55 expands into the recessed portion 50c (in other words, the fiber density increases as the distance from the joint portion increases. 54 the lower). Thereby, the recessed portion 50c (and therefore the convex portion) is not easily crushed by the pressure applied when the product is packaged or when worn, and even if it is crushed, the elasticity of the middle panel 80 will prevent it from being crushed. It will promote the shape recovery to at least the part where the middle piece 80 enters or the volume close to that part. Furthermore, when the superabsorbent polymer absorbs excretion fluid, it will expand the fiber gaps of the middle sheet 80 and enter therebetween, and may be able to easily compress the middle sheet 80, or may compress the middle sheet 80 and enter its fibers. Therefore, the presence of the middle sheet 80 does not easily hinder the expansion of the second super absorbent polymer particles 53 . Furthermore, the fibers of the middle sheet 80 that expand in the recessed portion 50c can ensure a liquid flow path to each second super absorbent polymer particle 53, so that diffusion can be suppressed even after the second super absorbent polymer particle 53 starts to expand. The reduction in resistance makes gel clogging less likely to occur. Therefore, through these synergistic effects, the absorption speed (especially in the initial stage of absorption) of the disposable diaper provided with the cell-absorbent sheet 50 can be improved.
上片51沒有特別限定，只要是與頂片同樣的透液性材料即可。上片51會影響吸收速度，所以上片是親水性纖維，特別是以棉和紙漿等天然纖維作為原料的乾式不織布，其中特別適合的是一種乾式造紙不織布(airlaid pulp nonwovens)，其紙漿為70重量%以上(當未滿100重量%時的剩餘量設為是適當的合成纖維)。不織布的纖維結合法沒有特別限定，為了防止第二高吸收性聚合物粒子53的脫離，所以較佳為紡黏法、噴熔法、針刺法般的可提高纖維密度的結合法。又，不織布的細度、單位面積的質量、厚度，較佳是分別為2.0～7.0dtex的程度、18～50g/m2 的程度、0.10～0.60mm的程度。當使用多孔性塑膠片時，為了防止第二高吸收性聚合物粒子53的脫離，該塑膠片的孔徑較佳為比第二高吸收性聚合物粒子53的外形更小。又，當上片51的原材料具有疏水性時，也能夠含有親水劑。The top sheet 51 is not particularly limited as long as it is made of the same liquid-permeable material as the top sheet. The upper sheet 51 will affect the absorption speed, so the upper sheet is made of hydrophilic fiber, especially dry non-woven fabrics using natural fibers such as cotton and pulp as raw materials. Particularly suitable among them is airlaid pulp nonwovens, whose pulp is 70 % by weight or more (when it is less than 100% by weight, the remaining amount is considered to be an appropriate synthetic fiber). The fiber bonding method of the nonwoven fabric is not particularly limited. In order to prevent the second super-absorbent polymer particles 53 from being detached, a bonding method that can increase fiber density such as spunbonding, melt blowing, or needle punching is preferred. In addition, the fineness, mass per unit area, and thickness of the nonwoven fabric are preferably about 2.0 to 7.0 dtex, about 18 to 50 g/m 2 , and about 0.10 to 0.60 mm, respectively. When a porous plastic sheet is used, in order to prevent the second super-absorbent polymer particles 53 from detaching, the pore size of the plastic sheet is preferably smaller than the outer shape of the second super-absorbent polymer particles 53 . In addition, when the raw material of the upper sheet 51 has hydrophobicity, a hydrophilic agent may be included.
作為下片52，能夠設為與上片51同樣的原材料，也能夠採用不透液性的原材料。作為可用作下片52之不透液性的原材料，能夠自不透液性片11的項目中記載的原材料中適當地選擇。雖然未圖示，上片51和下片52，也能夠是一張原材料被對折後的其中一方的層和另一方的層。The lower sheet 52 can be made of the same material as the upper sheet 51 , or a liquid-impermeable material can be used. As the liquid-impermeable material that can be used as the lower sheet 52 , it can be appropriately selected from the materials described in the item of the liquid-impermeable sheet 11 . Although not shown in the figure, the upper sheet 51 and the lower sheet 52 may be one layer and the other layer obtained by folding one raw material in half.
若下片52是細度為1.5～6.0dtex、單位面積的質量為25～50g/m2 且厚度為0.1～1.0mm的比較稀疏的不織布，則當胞室55內的第二高吸收性聚合物粒子53位於下片52上時、或到達下片52上時，成為容易被保持在下片52的纖維之間而不會在胞室55內移動，所以較佳。If the lower sheet 52 is a relatively sparse non-woven fabric with a fineness of 1.5 to 6.0 dtex, a mass per unit area of 25 to 50 g/m 2 and a thickness of 0.1 to 1.0 mm, then when the second highly absorbent polymer in the cell 55 It is preferable that the object particles 53 are positioned on the lower sheet 52 or reach the lower sheet 52 because they are easily held between the fibers of the lower sheet 52 and do not move within the cells 55 .
作為中片80之不織布沒有特別限定，不織布的構成纖維的細度較佳為1.6～7.0dtex的程度、更佳為5.6～6.6dtex。又，中片80的不織布的空隙率較佳為80～98%、更佳為90～95%。若中片80的細度和空隙率在此範圍內，則能夠儘可能地確保中片的彈性，並且第二高吸收性聚合物粒子53在***液的吸收前和***液的吸收時可容易地進入中片80的纖維間隙。因此，吸收時在凹部50c內擴展的中片80的纖維，可確保往各個第二高吸收性聚合物粒子53的液體流通路徑，所以在第二高吸收性聚合物粒子53開始膨脹之後也會抑制擴散性的降低，而使得凝膠阻塞不易發生。考慮到凹部50c的深度50d或進入凹部50c內的程度等，可適當地規定中片80的厚度，該厚度較佳為凹部50c的深度50d的10%～90%，更佳為70%～90%。中片80的單位面積的質量也可根據同樣的理由來適當地決定，在上述厚度範圍的情況較佳是設為25～40g/m2 的程度。為了提高中片80的不織布的空隙率(使纖維間隙變寬)，較佳為將構成纖維設為捲曲纖維。又，中片80的不織布的構成纖維，若是親水性纖維(包含藉由親水劑而具有親水性之纖維)則可提高保水性，若是疏水性纖維則可提高擴散性。不織布的纖維結合法沒有特別限定，為了提高空隙率(使纖維間隙變寬)並且使纖維充分地結合而確保彈性，所以中片80較佳為藉由熱風加熱來使纖維結合之熱風不織布。The nonwoven fabric of the middle sheet 80 is not particularly limited, but the fineness of the constituent fibers of the nonwoven fabric is preferably about 1.6 to 7.0 dtex, more preferably 5.6 to 6.6 dtex. Moreover, the void ratio of the nonwoven fabric of the middle sheet 80 is preferably 80 to 98%, more preferably 90 to 95%. If the fineness and porosity of the middle sheet 80 are within this range, the elasticity of the middle sheet can be ensured as much as possible, and the second super-absorbent polymer particles 53 can be easily absorbed before and during the absorption of excretion liquid. into the fiber gap of the middle piece 80. Therefore, the fibers of the middle sheet 80 that expand in the recessed portion 50c during absorption can ensure a liquid flow path to each second super-absorbent polymer particle 53. Therefore, after the second super-absorbent polymer particle 53 starts to expand, it will also Suppresses the decrease in diffusivity, making gel clogging less likely to occur. Taking into account the depth 50d of the recessed portion 50c or the degree of penetration into the recessed portion 50c, the thickness of the middle piece 80 can be appropriately determined. The thickness is preferably 10% to 90% of the depth 50d of the recessed portion 50c, and more preferably 70% to 90%. %. The mass per unit area of the middle sheet 80 can also be appropriately determined based on the same reason. In the case of the above thickness range, it is preferably about 25 to 40 g/m 2 . In order to increase the porosity of the nonwoven fabric of the middle sheet 80 (to widen the fiber gaps), it is preferred that the constituent fibers be crimped fibers. Furthermore, if the fibers constituting the nonwoven fabric of the middle sheet 80 are hydrophilic fibers (including fibers that are hydrophilic through a hydrophilic agent), the water retention property can be improved, and if they are hydrophobic fibers, the diffusibility can be improved. The fiber bonding method of the nonwoven fabric is not particularly limited. In order to increase the void ratio (widen the fiber gaps) and fully bond the fibers to ensure elasticity, the middle sheet 80 is preferably a hot air nonwoven fabric in which the fibers are bonded by hot air heating.
中片80中的與凹部50c對向的一面只要進入凹部50c內即可，各自如圖13(a)、圖13(c)、及圖14(a)、圖14(c)所示，較佳為接觸凹部50c的內表面，也可以如圖13(b)所示的分隔開來。當中片80中的與凹部50c對向的一面與凹部50c的內表面分隔開來時，該分隔距離80s能夠適當地規定，較佳是設為凹部50c的深度50d的30%以下。這樣一來，當在胞室55內產生間隙時，產品狀態下的凸部50p(凹部50c)也可以對應於該間隙而被壓潰。The side of the middle piece 80 opposite to the recessed portion 50c only needs to enter the recessed portion 50c, as shown in Figures 13(a), 13(c), and 14(a) and 14(c) respectively. It is preferable to contact the inner surface of the recess 50c, but may also be separated as shown in Figure 13(b). When the surface of the middle piece 80 facing the recessed portion 50c is separated from the inner surface of the recessed portion 50c, the separation distance 80s can be appropriately defined, and is preferably set to 30% or less of the depth 50d of the recessed portion 50c. In this way, when a gap is generated in the cell 55, the convex portion 50p (recessed portion 50c) in the product state can be crushed in response to the gap.
中片80，各自如圖13(a)～圖13(c)、及圖14(a)所示，也可以在胞室55內和接合部54的兩方，藉由黏接劑80h而被黏接於上片51和下片52的至少其中一方，如圖14(c)所示，也可以都沒有被黏接於上片51和下片52。The middle piece 80 , as shown in FIGS. 13(a) to 13(c) and 14(a) , may also be bonded by an adhesive 80h on both sides of the cell chamber 55 and the joint portion 54 . As shown in FIG. 14(c) , at least one of the upper sheet 51 and the lower sheet 52 may not be bonded to either of the upper sheet 51 and the lower sheet 52 .
第二高吸收性聚合物粒子53的幾乎其全部(例如95%以上)，設為相對於上片51、下片52及中片80是非固定的，較佳是設為可自由地移動。但是，第二高吸收性聚合物粒子53的一部分或幾乎全部(例如95%以上)，也能夠被黏接或黏著在上片51、下片52及中片80之中的至少一片上。圖14(b)表示第二高吸收性聚合物粒子53的一部分藉由熱熔黏接劑等黏接劑53h而黏接於上片51的例子。又，第二高吸收性聚合物粒子53也可以塊狀化到某個程度。特別是當第二高吸收性聚合物粒子53可在胞室55內自由移動時，若胞室55內具有中空部分，則在使用時第二高吸收性聚合物粒子53在胞室55內移動，會發出聲音、或是由於在胞室55內的第二高吸收性聚合物粒子53的分佈不均勻而可能發生凝膠阻塞。因此，為了解決這些情況，如前述般地使在中片80中的與凹部50c對向的面接觸凹部50c的內表面，也就是，換句話說，在包含凹部50c之幾乎遍及整個胞室55內充滿高空隙率的中片80的纖維是一種較佳形態。藉此，第二高吸收性聚合物粒子53被中片80的纖維捉住，或被推壓至上片51或下片52上、或是有上述兩種情況，所以不易自由移動。因此，能夠防止阻礙到第二高吸收性聚合物粒子53的膨脹，並且能夠防止由於第二高吸收性聚合物粒子53的移動所發出的聲音、及在胞室55內的第二高吸收性聚合物粒子53的分佈不均勻而阻礙到吸收。Almost all (eg, 95% or more) of the second highly absorbent polymer particles 53 are not fixed to the upper sheet 51 , the lower sheet 52 , and the middle sheet 80 , and are preferably freely movable. However, part or almost all (for example, more than 95%) of the second high-absorbent polymer particles 53 can also be bonded or adhered to at least one of the upper sheet 51 , the lower sheet 52 and the middle sheet 80 . FIG. 14(b) shows an example in which a part of the second highly absorbent polymer particles 53 is adhered to the upper sheet 51 by an adhesive 53h such as a hot melt adhesive. In addition, the second highly absorbent polymer particles 53 may be agglomerated to a certain extent. Especially when the second super absorbent polymer particles 53 can move freely within the cell chamber 55, if the cell chamber 55 has a hollow portion, the second super absorbent polymer particles 53 will move within the cell chamber 55 during use. , sound may be emitted, or gel clogging may occur due to uneven distribution of the second super absorbent polymer particles 53 in the cells 55 . Therefore, in order to solve these problems, as mentioned above, the surface of the middle piece 80 opposite to the recessed portion 50c is made to contact the inner surface of the recessed portion 50c, that is, in other words, almost the entire cell 55 including the recessed portion 50c The fiber filled with high void content of the middle sheet 80 is a preferred form. Thereby, the second super-absorbent polymer particles 53 are caught by the fibers of the middle sheet 80 , or are pushed onto the upper sheet 51 or the lower sheet 52 , or both of the above situations, so they are difficult to move freely. Therefore, it is possible to prevent obstruction of the expansion of the second super-absorbent polymer particles 53, and to prevent sound caused by the movement of the second super-absorbent polymer particles 53 and the second high-absorbent polymer particle 53 in the cells 55. The polymer particles 53 are unevenly distributed and hinder absorption.
各自如圖13(a)、圖13(c)、圖14(c)所示的例子，若第二高吸收性聚合物粒子53最多存在於中片80的頂面上，且自該處朝向下側減少，則使用者用手觸摸尿布的外表面時，因為隔著中片80而使得第二高吸收性聚合物粒子53的小顆粒摩擦(產生沙沙聲音)的觸感(違和感)不容易傳遞到手上，所以較佳。特別是當中片80是空隙率高的很蓬鬆的不織布時，第二高吸收性聚合物粒子53在***液的吸收前和***液的吸收時可進入中片80的纖維間隙，所以進一步提升吸收速度。亦即，吸收初期，在中片80的頂面進行吸收，第二高吸收性聚合物粒子53大多分佈在該頂面上，但是該吸收速度有限。因此，此吸收初期，***液大多也會進入具有少量的第二高吸收性聚合物粒子53之中片80內，藉由中片80內的第二高吸收性聚合物粒子53來吸收、暫時儲藏直到藉由第二高吸收性聚合物粒子53來吸收、或往周圍的胞室55擴散。往周圍擴散後的***液，藉由在該處存在的中片80內的第二高吸收性聚合物粒子53來吸收、或藉由大多存在於該中片80的上方之第二高吸收性聚合物粒子53來吸起。而且，在各第二高吸收性聚合物粒子53逐漸吸收***液的過程中，高吸收性聚合物粒子擴大纖維間隙並且進入該纖維間隙中、或者膨脹並且壓縮中片80。藉由這種吸收機制，***液會迅速地擴散到胞室吸收片50的廣範圍中，且成為被吸入到胞室吸收片50的內部的狀態，所以當然會提升吸收速度，且防止回滲性也成為優異。又，為了良好地發揮這種吸收機制，較佳為至少在上片51中的構成各胞室55之部分形成凹部50c。In the examples shown in Figure 13(a), Figure 13(c), and Figure 14(c) respectively, if the second super absorbent polymer particles 53 exist at most on the top surface of the middle sheet 80, and from there towards When the lower side is reduced, when the user touches the outer surface of the diaper with his or her hand, the small particles of the second super absorbent polymer particles 53 rub (generate a rustling sound) through the middle sheet 80 and the tactile sensation (unconforming feeling) is less likely to occur. It is better to pass it to the hand. Especially when the middle sheet 80 is a very fluffy non-woven fabric with a high porosity, the second highly absorbent polymer particles 53 can enter the fiber gaps of the middle sheet 80 before and during the absorption of excretion fluid, so the absorption is further improved. speed. That is, in the early stage of absorption, absorption is performed on the top surface of the middle sheet 80 and most of the second highly absorbent polymer particles 53 are distributed on the top surface, but the absorption speed is limited. Therefore, in the initial stage of absorption, most of the excretion fluid will also enter the middle sheet 80 containing a small amount of the second high-absorbent polymer particles 53, and is absorbed temporarily by the second high-absorbent polymer particles 53 in the middle sheet 80. It is stored until it is absorbed by the second highly absorbent polymer particles 53 or diffused into the surrounding cells 55 . The excretion fluid that has spread to the surroundings is absorbed by the second highly absorbent polymer particles 53 in the middle sheet 80 present there, or by the second highly absorbent polymer particles mostly present above the middle sheet 80 Polymer particles 53 are picked up. Furthermore, as each second super-absorbent polymer particle 53 gradually absorbs excretion fluid, the super-absorbent polymer particles expand and enter fiber gaps, or expand and compress the middle sheet 80 . Through this absorption mechanism, the excretion fluid will quickly spread over a wide area of the cell-absorbent sheet 50 and be sucked into the interior of the cell-absorbent sheet 50, so of course the absorption speed will be increased and back-infiltration will be prevented. Sex also becomes excellent. In order to effectively exert this absorption mechanism, it is preferable to form the recessed portion 50c in at least the portion of the upper sheet 51 that constitutes each cell 55.
胞室55內的第二高吸收性聚合物粒子53的分佈程度能夠適當地規定，通常的情況，較佳為存在於中片80的頂面上的第二高吸收性聚合物粒子53的重量比例為總量的50%以上，被保持在中片80內(也就是不在下片52上)的高吸收性聚合物粒子的重量比例為總量的45%以上。The degree of distribution of the second high-absorbent polymer particles 53 in the cells 55 can be appropriately determined. In general, it is preferably the weight of the second high-absorbent polymer particles 53 present on the top surface of the middle sheet 80 The proportion by weight is more than 50% of the total amount, and the weight proportion of the super absorbent polymer particles held within the middle sheet 80 (that is, not on the lower sheet 52) is more than 45% of the total amount.
當然，胞室55內的第二高吸收性聚合物粒子53的分佈程度不限定於此。因此，如圖13(b)所示，第二高吸收性聚合物粒子53也能夠最多地存在於下片52的頂面上，並自該處朝向上側減少地分佈。又，如圖14(a)所示，存在於中片80的頂面上和下片52的頂面上的第二高吸收性聚合物粒子53的量，也可以成為比該中片80與該下片52之間的部分更多的分佈。進一步，雖然未圖示出來，但是第二高吸收性聚合物粒子53也能夠最多地存在於中片80的厚度方向的中間，並自該處朝向上側和下側減少地分佈。此形態，能夠將中片80作成兩層的不織布，並以將第二高吸收性聚合物粒子53夾在該兩層的層間的方式來形成。Of course, the distribution degree of the second highly absorbent polymer particles 53 in the cells 55 is not limited to this. Therefore, as shown in FIG. 13(b) , the second highly absorbent polymer particles 53 can also be present most on the top surface of the lower sheet 52 and be distributed in a decreasing amount toward the upper side from there. Furthermore, as shown in FIG. 14(a) , the amount of the second highly absorbent polymer particles 53 present on the top surface of the middle sheet 80 and the top surface of the lower sheet 52 may be smaller than that of the middle sheet 80 and the lower sheet 52 . The portion between the lower pieces 52 is more distributed. Furthermore, although not shown in the drawings, the second highly absorbent polymer particles 53 may be most present in the middle of the middle sheet 80 in the thickness direction, and may be distributed in a decreasing amount toward the upper and lower sides from there. In this form, the middle sheet 80 can be made into two layers of nonwoven fabric, and the second highly absorbent polymer particles 53 can be sandwiched between the two layers.
第二高吸收性聚合物粒子53的單位面積的質量能夠適當地規定。本例的吸收體70中，在上輔助層71中含有第一高吸收性聚合物粒子43，所以能夠將主吸收層72中的第二高吸收性聚合物粒子53的單位面積的質量抑制為較少，但是僅藉由上輔助層71來負責尿這樣的比較多量的***液的吸收並不適當。因此，雖然不能夠一概而論，第二高吸收性聚合物粒子53的單位面積的質量較佳為比第一高吸收性聚合物粒子43的單位面積的質量更多，例如能夠設為150～250g/m2 。一般來說，第二高吸收性聚合物粒子53的單位面積的質量未滿150g/m2 就不易確保吸收量，若超過250g/m2 ，則當使用者用手碰觸產品的外表面時，第二高吸收性聚合物粒子53的小顆粒摩擦(產生沙沙聲音)的觸感(違和感)容易傳遞到手上。The mass per unit area of the second highly absorbent polymer particles 53 can be appropriately specified. In the absorbent body 70 of this example, the upper auxiliary layer 71 contains the first super absorbent polymer particles 43, so the mass per unit area of the second super absorbent polymer particles 53 in the main absorbent layer 72 can be suppressed to It is less, but it is not appropriate for the upper auxiliary layer 71 alone to absorb a relatively large amount of excretion fluid such as urine. Therefore, although it cannot be generalized, the mass per unit area of the second highly absorbent polymer particles 53 is preferably greater than the mass per unit area of the first highly absorbent polymer particles 43, and can be set to 150 to 250 g/, for example. m2 . Generally speaking, if the mass per unit area of the second highly absorbent polymer particles 53 is less than 150g/ m2 , it is difficult to ensure the absorption capacity. If it exceeds 250g/ m2 , when the user touches the outer surface of the product with his hand, , the tactile feeling (unconventional feeling) caused by the friction (generating a rustling sound) of the small particles of the second highly absorbent polymer particles 53 is easily transmitted to the hand.
胞室55的平面形狀能夠適當地規定，能夠如圖8等所示，設為六角形、菱形、正方形、長方形、圓形、橢圓形等，為了密集地配置而希望設為多角形，希望如圖示例般地配列成沒有間隙。胞室55，除了配列成相同形狀和相同尺寸之外，雖然未圖示出來，也能夠將形狀和尺寸的至少一方不同的複數種胞室55加以組合並配列。The planar shape of the cells 55 can be appropriately determined, and can be hexagonal, rhombus, square, rectangular, circular, elliptical, etc., as shown in FIG. 8 etc., and is preferably polygonal for dense arrangement, such as Illustrations are arranged normally without gaps. In addition to the cells 55 being arranged in the same shape and the same size, although not shown in the figure, a plurality of cells 55 that are different in at least one of the shapes and sizes can be combined and arranged.
胞室55(也就是第二高吸收性聚合物粒子53的集合部也同樣)的平面配列能夠適當地規定，較佳為規則性反復的平面配列，除了如圖12(a)所示的斜方格子狀、如圖12(b)所示的六方格子(hexagonal close-packed, hcp)狀(這些也稱為交錯狀)、如圖12(c)所示的正方格子狀、如圖12(d)所示的矩形格子狀、如圖12(e)所示的平行體格子(如圖示，以多數的平行的斜向的列的群彼此交叉的方式設為2群的形態)狀等(這些包含相對於伸縮方向傾斜成未滿90度的角度之格子)這樣的規則性反復的配列之外，胞室55的群(群單位的配列也可以是規則性也可以是不規則性，也可以是圖樣或文字狀等)也能夠作成規則性反復的群。The planar arrangement of the cells 55 (that is, the collection portion of the second super-absorbent polymer particles 53 is also the same) can be appropriately determined, and is preferably a regularly repeated planar arrangement. Except for the oblique arrangement as shown in FIG. 12(a) Square lattice shape, hexagonal close-packed (hcp) shape as shown in Figure 12(b) (these are also called staggered shapes), square lattice shape as shown in Figure 12(c), Figure 12( A rectangular lattice shape as shown in d), a parallel body lattice shape as shown in Fig. 12(e) (as shown in the figure, a plurality of parallel diagonal row groups are formed into two groups so that they intersect with each other), etc. (These include grids that are inclined at an angle of less than 90 degrees with respect to the expansion and contraction direction.) In addition to such a regularly repeated arrangement, the arrangement of groups (group units) of cells 55 may be regular or irregular. It can also be in the form of a pattern or a letter, etc.) and a regularly repeating group can be created.
各胞室55的尺寸能夠適當地規定，例如能夠設為前後方向LD的尺寸55L(相等於凸部50p的前後方向的尺寸)能夠設為6～30mm的程度，又寬度方向WD的尺寸55W(相等於凸部50p的寬度方向的尺寸)能夠設為7～50mm的程度。各胞室55的面積能夠設為31～1650mm2 的程度。The size of each cell 55 can be appropriately determined. For example, the size 55L in the front-rear direction LD (equivalent to the front-rear direction size of the convex portion 50p) can be set to about 6 to 30 mm, and the size 55W (equivalent to the front-rear direction size of the convex portion 50p) in the width direction WD can be set to about 6 to 30 mm. The size (equal to the width direction of the convex portion 50p) can be about 7 to 50 mm. The area of each cell 55 can be approximately 31 to 1650 mm 2 .
接合上片51與下片52之接合部54，希望藉由超音波熔接或熱封這樣的藉由上片51與下片52的熔接來接合，也可以是藉由熱熔黏接劑來接合。The joining portion 54 of the upper piece 51 and the lower piece 52 is preferably joined by ultrasonic welding or heat sealing, or by hot melt adhesive. .
上片51與下片52的接合部54，只要被配置成環繞各胞室55，且成為鄰接的胞室之間的邊界即可，除了圖示例所示的形成為點線狀(在環繞各胞室55的方向上斷續)之外，也能夠形成為連續線狀。當斷續地形成接合部54時，在環繞胞室55的方向上的接合部54之間，較佳為不存在第二高吸收性聚合物粒子53或即使存在也比胞室55內更少。特別是，若將接合部設置成點線狀(斷續的)，則中片的纖維群會通過相鄰的接合部之間而橫跨多數個胞室之間地延伸。因此，在相鄰的接合部之間形成有液體擴散通路，所以橫跨胞室之間的液體擴散性的提升，藉此謀求吸收速度的提升。The joint portion 54 of the upper sheet 51 and the lower sheet 52 only needs to be arranged so as to surround each cell 55 and form a boundary between adjacent cells. Except for the example shown in the figure, the joint portion 54 is formed in a dotted line shape (surrounding the cells 55 ). In addition to being discontinuous in the direction of each cell 55, it can also be formed in a continuous linear shape. When the joints 54 are formed intermittently, it is preferable that the second super absorbent polymer particles 53 do not exist between the joints 54 in the direction surrounding the cells 55 or even if they exist, there are fewer second superabsorbent polymer particles than in the cells 55 . In particular, if the joints are arranged in a dotted line shape (intermittent), the fiber group of the middle sheet will pass between adjacent joints and extend across a plurality of cells. Therefore, a liquid diffusion path is formed between adjacent joint portions, so that the liquid diffusivity across the cells is improved, thereby improving the absorption speed.
如圖10所示，接合部54，也能夠是可因為鄰接的胞室55內的第二高吸收性聚合物粒子53的膨脹力而剝離的弱接合部54b，又，也能夠是基本上不會因為鄰接的胞室55內的第二高吸收性聚合物粒子53的膨脹力而剝離的強接合部54a。為了也可對應於各個胞室55容積以上的第二高吸收性聚合物粒子53的膨脹，較佳為接合部54的一部分或全部是弱接合部54b。藉由具有弱接合部54b，夾住弱接合部54b而鄰接的胞室55彼此，可因為該胞室55內的第二高吸收性聚合物粒子53的吸收膨脹壓力而剝離並合體而成為一個大的胞室55。As shown in FIG. 10 , the joint portion 54 may be a weak joint portion 54 b that can be peeled off due to the expansion force of the second superabsorbent polymer particles 53 in the adjacent cells 55 , or it may be a weak joint portion 54 that is basically not connected. The strong joint portion 54a is peeled off due to the expansion force of the second super-absorbent polymer particles 53 in the adjacent cells 55. In order to cope with the expansion of the second super-absorbent polymer particles 53 that exceeds the volume of each cell 55, it is preferable that part or all of the joint portion 54 is a weak joint portion 54b. By having the weak joint portion 54b, the adjacent cells 55 sandwiching the weak joint portion 54b can be separated and merged into one due to the absorption and expansion pressure of the second super absorbent polymer particles 53 in the cell 55. Large cell 55.
另一方面，強接合部54a是基本上即使其兩側的胞室55發生吸收並膨脹也不會剝離的部分，所以藉由其在特定的方向上連續而具有提升擴散性、防止第二高吸收性聚合物粒子53的凝膠化物的流動、減低表面側的接觸面積等效果。因此，藉由組合強接合部54a與弱接合部，能夠構築一種胞室吸收片50，其具有後述各種特徵。另外，位於寬度方向WD的最外側之接合部54，若此處剝離則第二高吸收性聚合物粒子53或其凝膠化物可能會漏出到胞室吸收片50的側方，所以希望作成強接合部54a。根據同樣的觀點，使上片51和下片52在比胞室55形成區域更往寬度方向WD的外側延伸某種程度，為了補強此延伸部分而較佳為要實施緣部接合部54c。On the other hand, the strong joint portion 54a is a portion that basically does not peel off even if the cells 55 on both sides absorb and expand. Therefore, since it is continuous in a specific direction, it has enhanced diffusivity and prevents the second high The gelled matter of the absorbent polymer particles 53 has effects such as flow and reduction of the contact area on the surface side. Therefore, by combining the strong joint portion 54a and the weak joint portion, a cell-absorbing sheet 50 having various features described below can be constructed. In addition, if the joint portion 54 located on the outermost side in the width direction WD is peeled off, the second super absorbent polymer particles 53 or its gelled product may leak to the side of the cell absorbent sheet 50, so it is desirable to make it strong. Joint portion 54a. From the same viewpoint, it is preferable to extend the upper sheet 51 and the lower sheet 52 to a certain extent outside the cell 55 formation area in the width direction WD, and to reinforce this extended portion, it is preferable to provide an edge joint 54c.
接合強度的差異，也可以藉由使接合部54的面積改變來簡單地形成，但不限定於此，例如當藉由熱熔黏接劑來形成接合部54時，也能夠採用一種藉由依據部位來改變熱熔黏接劑的種類的手法。特別是，當藉由熔接上片51與下片52來形成接合部54時，也能夠僅藉由將接合部54作成點線狀並使點間隔54D變寬來形成弱接合部54b，但是接合部54是成為鄰接的胞室55彼此的邊界之部分，所以若點間隔54D太寬，則在鄰接的胞室55彼此的邊界，間隙會變多，使得第二高吸收性聚合物粒子53容易移動。因此，若藉由組合接合部54的寬度54W的寬窄、與點間隔54D來形成點線狀的弱接合部54b，則該弱接合部54b成為間隙少卻容易剝離之接合部。The difference in joint strength can also be simply formed by changing the area of the joint portion 54, but is not limited thereto. For example, when the joint portion 54 is formed by a hot melt adhesive, a method based on A method to change the type of hot melt adhesive according to the location. In particular, when the joint portion 54 is formed by welding the upper sheet 51 and the lower sheet 52, the weak joint portion 54b can be formed only by making the joint portion 54 into a dotted line shape and widening the dot interval 54D. The portion 54 serves as a boundary between adjacent cells 55. Therefore, if the dot interval 54D is too wide, there will be more gaps at the boundaries between adjacent cells 55, making it easier for the second highly absorbent polymer particles 53 to Move. Therefore, if the dotted line-shaped weak joint portion 54b is formed by combining the width 54W of the joint portion 54 and the dot spacing 54D, the weak joint portion 54b becomes a joint portion that has few gaps but is easy to peel off.
接合上片51與下片52之接合部54的尺寸能夠適當地規定，例如寬度(與包圍胞室55的方向正交的方向的尺寸，相等於胞室55的間隔)54W能夠設為1.0～8.0mm的程度。又，當將接合部54形成為點線狀(包圍胞室55的方向是斷續的)時，較佳是在包圍胞室55的方向上的接合部54的尺寸54L設為0.6～1.5mm的程度，點間隔54D設為0.8～3.0mm的程度。特別是在強接合部54a的情況，較佳是寬度54W設為1.3～1.8mm的程度，接合部54的尺寸54L設為1.0～1.5mm的程度，點間隔54D設為0.8～2.0mm的程度。又，在弱接合部54b的情況，較佳是寬度54W設為1.0～1.3mm的程度，接合部54的尺寸54L設為0.6～1.0mm的程度，點間隔54D設為1.5～3.0mm的程度。The size of the joint portion 54 that joins the upper sheet 51 and the lower sheet 52 can be appropriately determined. For example, the width (the size in the direction orthogonal to the direction surrounding the cell 55 and equivalent to the distance between the cells 55) 54W can be set to 1.0 to 1.0. To the extent of 8.0mm. Furthermore, when the joint portion 54 is formed in a dotted line shape (intermittent in the direction surrounding the cell 55), it is preferable that the size 54L of the joint portion 54 in the direction surrounding the cell 55 is 0.6 to 1.5 mm. The dot spacing 54D is set to about 0.8 to 3.0 mm. Especially in the case of the strong joint portion 54a, it is preferable to set the width 54W to about 1.3 to 1.8 mm, the size 54L of the joint portion 54 to about 1.0 to 1.5 mm, and the dot interval 54D to be about 0.8 to 2.0 mm. . In addition, in the case of the weak joint portion 54b, it is preferable to set the width 54W to about 1.0 to 1.3 mm, the size 54L of the joint portion 54 to about 0.6 to 1.0 mm, and the dot interval 54D to be about 1.5 to 3.0 mm. .
為了使弱接合部54b可剝離，能夠以相較於鄰接弱接合部54b之胞室55的容積，使該胞室55內的第二高吸收性聚合物粒子53的飽和吸收時的體積充分地更大的方式來規定被配置在各胞室55內的第二高吸收性聚合物粒子53的種類和量。又，為了使強接合部54a基本上不會剝離，能夠以相較於可因為弱接合部54b的剝離而合體的胞室55的合體後的容積，使該可合體的胞室55內所包含的第二高吸收性聚合物粒子53的飽和吸收時的體積更小的方式來規定被配置在各胞室55內的第二高吸收性聚合物粒子53的種類和量。In order to make the weak joint portion 54b peelable, the volume of the second highly absorbent polymer particles 53 in the cell 55 during saturation absorption can be sufficiently increased compared to the volume of the cell 55 adjacent to the weak joint portion 54b. The type and amount of the second super absorbent polymer particles 53 arranged in each cell 55 are specified in a larger manner. In addition, in order to prevent the strong joint portion 54a from peeling off, the combined volume of the cells 55 that can be combined due to the peeling of the weak joint portion 54b can be reduced. The type and amount of the second highly absorbent polymer particles 53 arranged in each cell 55 are determined so that the volume of the second highly absorbent polymer particles 53 during saturated absorption is smaller.
當將接合部54形成連續線狀時的接合部54的寬度、以及當將接合部54形成點線狀時的接合部54的寬度54W，除了在包圍胞室55的方向上設為固定之外，也能夠加以改變。又，能夠適當地規定當將接合部54形成點線狀時的各接合部54的形狀，除了全部設為相同之外，也能夠設為對應於部位而不同的形狀。特別是當將各胞室55的形狀設為多角形時，較佳為在各邊的中間位置和各頂點位置的至少一方設置接合部54。又，強接合部54a的情況，較佳為也設置在各頂點位置，而弱接合部54b的情況，不設置在各頂點位置會使弱接合部54b容易剝離，而使胞室55的合體順利地進行，所以較佳。The width of the joint portion 54 when the joint portion 54 is formed into a continuous line shape and the width 54W of the joint portion 54 when the joint portion 54 is formed into a dotted line shape are fixed in the direction surrounding the cell 55 . , can also be changed. In addition, the shape of each joint portion 54 when the joint portion 54 is formed into a dotted line shape can be appropriately defined, and instead of all being the same, it can also be made into a different shape corresponding to the location. Especially when the shape of each cell 55 is a polygon, it is preferable to provide the joint portion 54 at at least one of the middle position of each side and the position of each vertex. In addition, in the case of the strong joint portion 54a, it is preferable to also provide it at each vertex position, and in the case of the weak joint portion 54b, if it is not provided at each vertex position, the weak joint portion 54b will be easily peeled off, and the integration of the cells 55 will be smooth. It is carried out on the ground, so it is better.
如圖8和圖11所示，較佳為在胞室吸收片50的寬度方向WD的中間的區域，設置有強接合部54a在前後方向LD上連續的縱向強接合線58、及設置有鄰接於該縱向強接合線58的兩旁的由低膨脹胞室55s所構成的擴散性提升部57。相較於鄰接於擴散性提升部57的兩旁的胞室55，此擴散性提升部57的低膨脹胞室55s的第二高吸收性聚合物粒子53的每單位面積的內包量較少，且鄰接於該擴散性提升部57的兩旁的胞室55之間的接合部54成為弱接合部54b。此時，如圖10所示，***液吸收初期，由於擴散性提升部57與其周圍部分的膨脹量的差異，形成了以擴散性提升部57作為底部之寬度大的溝，並藉由該溝來促進液體擴散。此狀態，藉由擴散性提升部57的周圍的胞室55中的第二高吸收性聚合物粒子53的膨脹力，繼續膨脹至擴散性提升部57的低膨脹胞室55s及其兩旁的胞室55之間的弱接合部54b鬆脫，由於強接合部54a在該弱接合部54b鬆脫後也不會鬆脫，所以溝的寬度變窄但是殘留有以強接合部54a作為底部之溝而維持擴散性。也就是說，在多量的***液的擴散成為重要的吸收初期，溝的寬度大，其後，以不發生凝膠阻塞的方式使擴散性提升部57的低膨脹胞室55s也與周圍的胞室55合體，但是藉由強接合部54a來殘留有溝，以維持擴散性提升作用。As shown in Fig. 8 and Fig. 11, preferably, a longitudinal strong bonding line 58 is provided in which a strong bonding part 54a is continuous in the front-rear direction LD, and a diffusible raised part 57 composed of low expansion cells 55s is provided adjacent to both sides of the longitudinal strong bonding line 58. The amount of the second super absorbent polymer particles 53 per unit area of the low expansion cells 55s of the diffusible raised part 57 is smaller than that of the cells 55 adjacent to both sides of the diffusible raised part 57, and the bonding part 54 between the cells 55 adjacent to both sides of the diffusible raised part 57 becomes a weak bonding part 54b. At this time, as shown in FIG10, at the initial stage of excrement absorption, due to the difference in the amount of expansion between the diffusible riser 57 and its surroundings, a wide groove with the diffusible riser 57 as the bottom is formed, and the diffusion of liquid is promoted by the groove. In this state, due to the expansion force of the second superabsorbent polymer particles 53 in the cells 55 around the diffusible riser 57, the expansion continues until the weak joints 54b between the low-expansion cells 55s of the diffusible riser 57 and the cells 55 on both sides thereof are loosened. Since the strong joints 54a will not loosen even after the weak joints 54b are loosened, the width of the groove becomes narrower, but the groove with the strong joints 54a as the bottom remains, and the diffusivity is maintained. That is, in the initial absorption stage when diffusion of a large amount of excrement becomes important, the width of the groove is large, and then the low expansion cell 55s of the diffusive lifting portion 57 is also combined with the surrounding cell 55 in a manner that does not cause gel blockage, but the groove is retained by the strong joint 54a to maintain the diffusive lifting effect.
低膨脹胞室55s中的第二高吸收性聚合物粒子53的內包量，以重量比來計算，較佳為鄰接的胞室55的1/3以下，特佳是完全不內包。The amount of the second highly absorbent polymer particles 53 contained in the low-expansion cells 55s is preferably less than 1/3 of the adjacent cells 55 in terms of weight ratio, and particularly preferably is not contained at all.
另外，圖11中，強接合部54a以粗的點線來表現，其他的弱接合部54b以細的點線來表現，圖11中，在含有第二高吸收性聚合物粒子53之胞室55(也就是除了低膨脹胞室55s及後述空胞室56之外的胞室55)上，附加斜線圖樣。In addition, in FIG. 11 , the strong bonding portion 54 a is represented by a thick dotted line, and the other weak bonding portions 54 b are represented by a thin dotted line. In FIG. 11 , in the cells containing the second superabsorbent polymer particles 53 55 (that is, the cells 55 except for the low-expansion cells 55s and the empty cells 56 described later), a diagonal pattern is added.
擴散性提升部57，如圖8所示，也可以設置成遍及胞室吸收片50的全長，如圖11所示，也可以僅設置於前後方向LD的中間部分(特別是包含胯部、及遍及其前後兩側的範圍)。又，擴散性提升部57，如圖8和圖11所示，除了設置於寬度方向WD的中央的一個處所之外，雖然未圖示出來，但是也能夠設置於在寬度方向WD上隔開間隔的複數個處所。As shown in FIG. 8 , the diffusivity enhancing part 57 may be provided over the entire length of the cell absorbent sheet 50 . As shown in FIG. 11 , it may also be provided only in the middle part of the front-rear direction LD (especially including the crotch and covering its front and rear sides). Furthermore, as shown in FIGS. 8 and 11 , in addition to being provided at one place in the center of the width direction WD, the diffusivity enhancing portion 57 may also be provided at intervals in the width direction WD, although not shown in the figure. plural locations.
若遍及胞室吸收片50的整個前後方向LD的胞室55彼此可合體，則在吸收時，膨脹後的第二高吸收性聚合物粒子53的凝膠化物，成為可在合體後的胞室55內在前後方向LD上大幅地移動，該凝膠化物可能集合在胯部等低處而使穿著感惡化。因此，如圖8所示，較佳的形態是在前後方向LD上隔開間隔地設置有複數條橫向強接合線59，該橫向強接合線59(參照圖7)是強接合部54a在寬度方向WD或斜向上連續或斷續(連續線狀或點線狀)地連續的部分。藉此，能夠藉由在吸收時基本上不會剝離的強接合部54a來阻止第二高吸收性聚合物粒子53的凝膠化物在前後方向LD上移動，而能夠防止胞室吸收片50的形狀崩潰。當然，如圖11所示，也能夠作成沒有這種橫向強接合線59的形態。If the cells 55 covering the entire front-to-back direction LD of the cell-absorbent sheet 50 can be combined with each other, during absorption, the gelled product of the expanded second super-absorbent polymer particles 53 will become cells that can be combined after being combined. The inner 55 moves greatly in the front-to-back direction LD, and the gelled matter may collect in low places such as the crotch, thereby worsening the wearing feel. Therefore, as shown in FIG. 8 , a preferred form is to provide a plurality of transverse strong bonding lines 59 (refer to FIG. 7 ) at intervals in the front-rear direction LD. A portion that is continuous or intermittently (continuous line or dotted line) in direction WD or diagonally upward. Thereby, it is possible to prevent the gelled matter of the second super-absorbent polymer particles 53 from moving in the front-rear direction LD by the strong joint portion 54a that is basically not peeled off during absorption, thereby preventing the cell-absorbent sheet 50 from being detached. Shape collapse. Of course, as shown in FIG. 11 , it can also be formed without such transverse strong bonding lines 59 .
特別是，如圖8所示的形態，若強接合部54a遍及胞室吸收片50的全長在前後方向LD上連續的部分也就是縱向強接合線58，沿著位於寬度方向WD的最外側之胞室55的側緣分別地被設置在寬度方向WD的兩側，並且也設置於這些縱向強接合線58的寬度方向WD的中間，且橫向強接合線59是以遍及在寬度方向WD上相鄰的縱向強接合線58之間的方式在寬度方向WD或斜向上連續的部分，則胞室55的合體不會超過藉由強接合部54a所包圍的最擴大區塊55G以上，所以在吸收時，膨脹後的第二高吸收性聚合物粒子53的凝膠化物不會移動到最擴大區塊55G外，能夠有效地防止吸收時的胞室吸收片50的形狀崩潰。又，藉由強接合部54a在前後方向LD上連續的部分也就是縱向強接合線58來提升縱向的液體擴散性，並藉由強接合部54a在寬度方向WD或斜向上連續的部分也就是橫向強接合線59來提升橫向的液體擴散性。例如在圖8所示的形態中，若假設為尿被***在符號Z的位置，則尿會以該處為中心如圖9般地擴散到周圍，並且各位置的第二高吸收性聚合物粒子53會逐漸地吸收該尿。此時，如圖9和圖10所示，針對內部的第二高吸收性聚合物粒子53的膨脹壓變高的胞室55，其周圍的弱接合部54b無法抵抗膨脹壓而會剝離並與鄰接的胞室55合體。此合體，只要第二高吸收性聚合物粒子53的吸收並膨脹會使弱接合部54b剝離就會繼續下去，並進行至在周圍具有強接合部54a之胞室55為止。 In particular, in the form shown in FIG. 8 , if the strong joint portion 54 a extends over the entire length of the cell absorbent sheet 50 and is a continuous portion in the front-rear direction LD, that is, the longitudinal strong joint line 58 , along the outermost portion in the width direction WD. The side edges of the cells 55 are respectively disposed on both sides of the width direction WD, and are also disposed in the middle of the width direction WD of these longitudinal strong bonding lines 58, and the transverse strong bonding lines 59 are arranged throughout the width direction WD. If the adjacent longitudinal strong bonding lines 58 are continuous in the width direction WD or obliquely, the integration of the cells 55 will not exceed the most enlarged area 55G surrounded by the strong bonding portion 54a, so in the absorption , the gelled matter of the expanded second highly absorbent polymer particles 53 will not move outside the most expanded area 55G, which can effectively prevent the shape of the cell absorption sheet 50 from collapsing during absorption. In addition, the longitudinal strong bonding line 58 is the continuous portion of the strong joint portion 54a in the front-rear direction LD, thereby improving the liquid diffusivity in the longitudinal direction, and the continuous portion of the strong joint portion 54a in the width direction WD or diagonally is the longitudinal strong joint line 58 Lateral strong bonding lines 59 improve lateral liquid diffusivity. For example, in the form shown in Figure 8, if it is assumed that urine is excreted at the position marked Z, the urine will spread around that position as shown in Figure 9, and the second super absorbent polymer at each position will Particles 53 will gradually absorb the urine. At this time, as shown in FIGS. 9 and 10 , for the cells 55 in which the expansion pressure of the second super-absorbent polymer particles 53 becomes high, the weak joint portions 54 b around the cells 55 cannot withstand the expansion pressure and are peeled off and separated from each other. 55 adjacent cells unite. This combination will continue as long as the absorption and expansion of the second high-absorbent polymer particles 53 cause the weak joint portion 54b to peel off, and will continue until the cell 55 has the strong joint portion 54a around it.
最擴大區塊55G的尺寸或形狀、配置(也就是強接合部54a的配置)能夠適當地規定，若最擴大區塊55G太小則設置強接合部54a就沒有意義，又即便胞室55的數量多，當胞室55合體後的形狀細長地形成時就成為不易膨脹的形狀。 The size, shape, and arrangement of the most enlarged block 55G (that is, the arrangement of the strong joint portion 54a) can be appropriately determined. If the most enlarged block 55G is too small, it will be meaningless to provide the strong joint portion 54a, and even if the cell 55 has The number of cells 55 is large, and when the combined shape of the cells 55 is formed into an elongated shape, it becomes a shape that is less likely to expand.
如圖8~圖10所示的形態，縱向強接合線58，被設置在胞室吸收片50的寬度方向WD的中央部和兩側部，橫向強接合線59在前述中央的縱向強接合線58與兩側部的縱向強接合線58之間，各自地在左右反復地曲折並且在前後方向延伸成鋸齒(zigzag)狀。其結果，具有以中央的縱向強接合線58的位置為頂點之近乎三角形狀的最擴大區塊55G、及具有以兩側部的縱向強接合線58的位置為頂點之近似三角形狀的最擴大區塊55G，在前後方向上反復地形成。若橫向強接合線59被形成為這種鋸齒狀，則能夠以少數條的橫向強接合線59來有效率地促進橫向的液體擴散，且最擴大區塊55G成為容易膨脹的近似三角形，對於胞室55合體數量之胞室容積增加量也優異，所以較佳。 In the form shown in FIGS. 8 to 10 , the longitudinal strong bonding line 58 is provided at the center and both sides of the cell absorbent sheet 50 in the width direction WD, and the transverse strong bonding line 59 is located at the central longitudinal strong bonding line. 58 and the longitudinal strong bonding lines 58 on both sides, respectively, are repeatedly zigzag in the left and right directions and extend in a zigzag shape in the front and rear directions. As a result, the most enlarged block 55G has an approximately triangular shape with the position of the central longitudinal strong bonding line 58 as its vertex, and the most enlarged block 55G has an approximately triangular shape with the positions of the longitudinal strong bonding lines 58 at both sides as its apex. Block 55G is formed repeatedly in the front-to-back direction. If the transverse strong bonding lines 59 are formed in such a zigzag shape, a small number of the transverse strong bonding lines 59 can effectively promote the lateral liquid diffusion, and the most enlarged region 55G becomes an approximately triangular shape that is easy to expand, which is good for the cell. The number of combined cells 55 is also excellent in the increase in cell volume, so it is preferable.
也能夠不設置低膨脹胞室55s而僅作成縱向強接合線58。此時，當***物的吸收時，接合部54不會鬆脫，所以殘留以強接合部54a作為底部之溝，藉此謀求擴散性的提升。It is also possible to provide only the longitudinal strong bonding line 58 without providing the low expansion cells 55s. At this time, when the excrement is absorbed, the joint portion 54 will not loosen, so the groove with the strong joint portion 54a as the bottom remains, thereby improving the diffusibility.
另一方面，如圖8等所示，也能夠設置空胞室56，相較於其他胞室，該空胞室56的第二高吸收性聚合物粒子53的每單位面積的內包量較少。圖11中，含有第二高吸收性聚合物粒子53之胞室55(也就是將低膨脹胞室55s和後述空胞室56除外之胞室55)被賦予斜線圖樣。其中，圖8中的已賦予斜線圖樣之區域，假設為製造時的第二高吸收性聚合物粒子53的散佈區域53A；在周緣的胞室55具有沒有斜線圖樣之部分，是當第二高吸收性聚合物粒子53可在胞室55內移動時，在產品中的胞室55內不會固定有第二高吸收性聚合物粒子53的存在位置，但是也可以與其他圖同樣地使第二高吸收性聚合物粒子53分布在整個胞室55內。空胞室56中的第二高吸收性聚合物粒子53的內包量，以重量比來計算，較佳為其他胞室的1/2以下，特佳是完全不內包。例如，胞室吸收片50的前端和後端，當製造時，藉由對各個胞室吸收片50切斷而形成，所以若此位置含有第二高吸收性聚合物粒子53，則可能造成切斷裝置的刀刃的壽命變短。因此，希望至少在通過胞室吸收片50的前端和後端的位置之胞室55是空胞室56。又，若將胞室吸收片50的前後方向LD的中間的兩側部的胞室55作成空胞室56，藉此該部分在吸收後會成為膨脹少的部分，因此即便在吸收後也可成為使胞室吸收片50合身於腿圍之形狀。On the other hand, as shown in FIG. 8 etc., it is also possible to provide empty cells 56 in which the amount of the second highly absorbent polymer particles 53 contained per unit area is larger than in other cells. few. In FIG. 11 , the cells 55 containing the second highly absorbent polymer particles 53 (that is, the cells 55 excluding the low-expansion cells 55 s and the empty cells 56 described below) are given a hatched pattern. Among them, the area with a hatched pattern in FIG. 8 is assumed to be the dispersion area 53A of the second high-absorbent polymer particles 53 during manufacturing; the cells 55 at the periphery have a portion without a hatched pattern, which is when the second high-absorbent polymer particles 53 are dispersed. When the absorbent polymer particles 53 are movable in the cells 55, the position of the second highly absorbent polymer particles 53 in the cells 55 in the product is not fixed. However, the second highly absorbent polymer particles 53 can be used in the same manner as in other figures. The two super absorbent polymer particles 53 are distributed throughout the cell chamber 55 . The amount of the second super-absorbent polymer particles 53 contained in the empty cells 56 is preferably less than 1/2 of that in other cells in terms of weight ratio, and particularly preferably it is not included at all. For example, the front and rear ends of the cell absorbent sheet 50 are formed by cutting each cell absorbent sheet 50 during manufacturing. Therefore, if the second highly absorbent polymer particles 53 are contained at this position, cutting may occur. The life of the blade of the breaking device is shortened. Therefore, it is desirable that the cells 55 be empty cells 56 at least at a position passing through the front and rear ends of the cell absorbent sheet 50 . Furthermore, if the cells 55 at both sides of the middle portion in the front-rear direction LD of the cell-absorbing sheet 50 are made into empty cells 56, this portion will become a less swollen portion after absorption, so even after absorption The cell absorbent sheet 50 is formed into a shape that fits the leg circumference.
上述例子，僅使第二高吸收性聚合物粒子53內包在胞室55內，但是也能夠使除臭劑粒子等高吸收性聚合物粒子以外的粉粒體，與第二高吸收性聚合物粒子53一起內包。In the above example, only the second super-absorbent polymer particles 53 are enclosed in the cells 55. However, powders other than super-absorbent polymer particles such as deodorant particles can also be polymerized with the second super-absorbent polymer particles. Object particles 53 are included together.
(高吸收性聚合物粒子) 作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，能夠直接使用此種吸收性物品中所使用的粒子。第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53的粒徑沒有特別限定，例如超過500μm的粒子的比例為30重量%以下，500μm以下且超過180μm的粒子的比例為60重量%以上，超過106μm且180μm以下的粒子的比例為10重量%以下，且106μm以下的粒子的比例為10重量%以下。另外，這些粒徑的測定如以下地實行。亦即，將500μm、180μm、106μm的標準篩(JISZ8801-1：2006)、及承接皿(saucer)，配置成自上方以此順序排列，將10g的高吸收性聚合物粒子的樣品加以投料至最上段的500μm的標準篩，並實行篩選(振動5分鐘)之後，測量各篩上殘留粒子的重量。此篩選的結果，將在500μm、180μm、106μm的各篩上殘留的樣品、及在承接皿上殘留的樣品的相對於樣品的投入量之重量比例，分別地設為超過500μm的粒子的比例、500μm以下且超過180μm的粒子的比例、超過106μm且180μm以下的粒子的比例、106μm以下的粒子的比例。(Highly absorbent polymer particles) As the first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53, particles used in such absorbent articles can be used as they are. The particle diameters of the first highly absorbent polymer particles 43 and the second highly absorbent polymer particles 53 are not particularly limited. For example, the proportion of particles exceeding 500 μm is 30% by weight or less, and the proportion of particles exceeding 500 μm and exceeding 180 μm is 60% by weight. The proportion of particles exceeding 106 μm and below 180 μm is 10% by weight or below, and the proportion of particles below 106 μm is 10% by weight or below. In addition, these particle diameters were measured as follows. That is, standard sieves (JISZ8801-1:2006) of 500 μm, 180 μm, and 106 μm, and saucers are arranged in this order from above, and a sample of 10 g of high-absorbent polymer particles is fed to After screening (vibrating for 5 minutes) with the 500 μm standard sieve in the uppermost section, the weight of the remaining particles on each sieve was measured. As a result of this screening, the weight ratio of the sample remaining on each of the 500 μm, 180 μm, and 106 μm sieves and the sample remaining on the receiving dish relative to the input amount of the sample was determined as the proportion of particles exceeding 500 μm, respectively. The proportion of particles of 500 μm or less and exceeding 180 μm, the proportion of particles exceeding 106 μm and 180 μm or less, and the proportion of particles of 106 μm or less.
作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，能夠沒有特別限定地使用，其中吸水量為40g/g以上的粒子是合適的。又，若是藉由破碎法來製造的第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，則不容易發生凝膠阻塞，所以較佳。作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，具有澱粉系、纖維素系、及合成聚合物系等粒子，能夠使用澱粉-丙烯酸(鹽)接枝聚合物、澱粉-丙烯腈共聚物的皂化物、羧甲基纖維素鈉交聯物、及丙烯酸(鹽)聚合物等粒子。作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53的形狀，適合是通常使用的粉粒體狀，但是也可以使用其它的形狀。The first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53 can be used without particular limitation. Among them, particles with a water absorption capacity of 40 g/g or more are suitable. Moreover, it is preferable that the first super-absorbent polymer particles 43 and the second super-absorbent polymer particles 53 are produced by a crushing method because gel clogging is less likely to occur. As the first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53, there are starch-based, cellulose-based, and synthetic polymer-based particles, and starch-acrylic acid (salt) graft polymer, Particles such as saponified product of starch-acrylonitrile copolymer, cross-linked product of sodium carboxymethylcellulose, and acrylic acid (salt) polymer. As the shape of the first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53, a commonly used powder or granular shape is suitable, but other shapes may also be used.
作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，適合使用吸水速度為70秒以下，特佳為40秒以下的粒子。若吸水速度過慢，則容易發生供給到吸收體70內的液體返回到吸收體70外的所謂的回滲。As the first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53, those having a water absorption speed of 70 seconds or less, particularly preferably 40 seconds or less, are used. If the water absorption speed is too slow, so-called back seepage in which the liquid supplied into the absorbent body 70 returns to the outside of the absorbent body 70 is likely to occur.
又，作為第一高吸收性聚合物粒子43和第二高吸收性聚合物粒子53，適當地使用凝膠強度為1000Pa以上的粒子。藉此，能夠有效地抑制液體吸收後的發黏感。In addition, as the first high-absorbent polymer particles 43 and the second high-absorbent polymer particles 53 , those having a gel strength of 1000 Pa or more are suitably used. This can effectively suppress the sticky feeling after liquid absorption.
(包裝片) 如圖3和圖16(a)所示，能夠藉由包裝片45來包裝吸收體70。此時，除了將一張包裝片45以包圍吸收體70的表面及背面和兩個側面的方式捲繞成筒狀之外，也能夠使用2張包裝片45以從表面及背面兩側夾住吸收體70的方式來包裝。作為包裝片45，能夠使用薄頁紙(tissue paper)，特別是皺紋紙、不織布、複合層壓不織布、開有小孔之片材等。其中，希望為高吸收性聚合物粒子不會漏出之片材。當使用不織布來作為包裝片45時，特別適合使用親水性的SMS不織布（SMS、SSMMS等），其材質可使用聚丙烯、聚乙烯/聚丙烯複合材料等。包裝片45使用的不織布的單位面積的質量，希望為5～40g/m2 ，特別希望為10～30g/m2 。(Packaging Sheet) As shown in FIG. 3 and FIG. 16(a) , the absorbent body 70 can be packaged with the packaging sheet 45 . At this time, in addition to winding one packaging sheet 45 into a tube shape so as to surround the front, back and both sides of the absorber 70 , two packaging sheets 45 may be used to sandwich it from both sides of the front and back. Packed in the form of absorbent body 70. As the packaging sheet 45, tissue paper, especially crepe paper, non-woven fabric, composite laminated non-woven fabric, sheet with small holes, etc. can be used. Among them, a sheet material from which super-absorbent polymer particles do not leak is desired. When using non-woven fabric as the packaging sheet 45, it is particularly suitable to use hydrophilic SMS non-woven fabric (SMS, SSMMS, etc.), and its material can be polypropylene, polyethylene/polypropylene composite materials, etc. The mass per unit area of the nonwoven fabric used for the packaging sheet 45 is preferably 5 to 40 g/m 2 , and particularly preferably 10 to 30 g/m 2 .
如圖16(b)所示，使包裝片45自吸收體70的背面經過吸收體70的寬度方向WD兩側捲繞至吸收體70的頂面的兩側部為止，在吸收體70的頂面的寬度方向WD的中間部設置沒有被包裝片45覆蓋的區域45S，並且較佳為以包含整個此區域45S的方式設置上輔助層71。吸收體70，為了防止製造時、使用前或吸收後發生高吸收性聚合物粒子的漏出，所以一般會利用包裝片45來包覆，當是具有前述上輔助層71之吸收體70時，希望上輔助層71可迅速地接觸黏性液N。因此，如圖16(b)所示，希望限制包裝片45的包覆範圍，並使上輔助層71在吸收體70的頂面露出。作為這種構造，吸收體70中的沒有被包裝片45覆蓋的部分，也是利用上輔助層71的高吸水不織布42來覆蓋，上輔助層71基本上是KLEMM吸水度高(也就是緊緻的)的高吸水不織布42，所以與利用包裝片45來覆蓋整個吸收體70同樣地具有能夠發揮防止高吸收性聚合物粒子漏出的效果。As shown in FIG. 16(b) , the packaging sheet 45 is wound from the back surface of the absorber 70 through both sides in the width direction WD of the absorber 70 to both sides of the top surface of the absorber 70 . An area 45S not covered by the packaging sheet 45 is provided in the middle part of the surface in the width direction WD, and it is preferable to provide the upper auxiliary layer 71 so as to include the entire area 45S. In order to prevent the absorbent body 70 from leaking out of the highly absorbent polymer particles during manufacture, before use or after absorption, the absorbent body 70 is generally covered with a packaging sheet 45. When the absorbent body 70 has the aforementioned upper auxiliary layer 71, it is desirable to The upper auxiliary layer 71 can quickly contact the viscous liquid N. Therefore, as shown in FIG. 16(b) , it is desirable to limit the covering range of the packaging sheet 45 and expose the upper auxiliary layer 71 on the top surface of the absorbent body 70 . As a result of this structure, the portion of the absorbent body 70 that is not covered by the packaging sheet 45 is also covered with the highly water-absorbent nonwoven fabric 42 of the upper auxiliary layer 71. The upper auxiliary layer 71 is basically KLEMM with high water absorption (that is, compact ) of the highly water-absorbent nonwoven fabric 42, it has the same effect of preventing leakage of the highly absorbent polymer particles as if the entire absorber 70 was covered with the packaging sheet 45.
＜說明書中的用語的說明＞ 當說明書中使用以下用語時，只要在說明書中無特別地記載，則具有如下含義。＜Explanation of terms used in this manual＞ When the following terms are used in the specification, they have the following meanings unless otherwise stated in the specification.
・「MD方向(機械加工方向(Machine Direction)」及「CD方向」，是指在製造設備中的流動方向(MD方向)及與其正交的橫方向(CD方向)，將任一方設為產品的前後方向且將另一方設為產品的寬度方向。不織布的MD方向，是不織布的纖維定向的方向。纖維定向，是指不織布的纖維的延伸方向，能夠藉由例如依據TAPPI(美國紙漿與造紙工業技術協會，Technical Association of the Pulp and Paper Industry)標準法T481的零距離拉伸強度所實行的纖維定向性試驗法之測定方法、及依據前後方向及寬度方向的拉伸強度比來決定纖維定向的方向之簡單的測定方法來判別纖維定向。・"MD direction (Machine Direction)" and "CD direction" refer to the flow direction (MD direction) in the manufacturing equipment and the transverse direction (CD direction) orthogonal to it, and either one is regarded as the product the front and back direction and let the other side be the width direction of the product. The MD direction of the nonwoven fabric is the direction in which the fibers of the nonwoven fabric are oriented. The fiber orientation refers to the extending direction of the fibers of the nonwoven fabric. It can be determined, for example, according to TAPPI (American Pulp and Paper Technical Association of the Pulp and Paper Industry) standard method T481 zero-distance tensile strength measurement method of fiber orientation test method, and determination of fiber orientation based on the tensile strength ratio in the front-to-back direction and width direction A simple method to determine fiber orientation.
・“前後方向”是指在圖中的由符號LD表示的方向(縱方向)，“寬度方向”是指在圖中的由符號WD表示的方向(左右方向)，前後方向與寬度方向正交。・The "front and rear direction" refers to the direction represented by the symbol LD in the figure (the longitudinal direction), and the "width direction" refers to the direction represented by the symbol WD in the figure (the left and right direction). The front and rear direction is orthogonal to the width direction. .
・「表面側」是指當穿用時，靠近穿用者的肌膚的一側；「背面側」是指當穿用時，遠離穿用者的肌膚的一側。・The "surface side" refers to the side that is close to the wearer's skin when worn; the "back side" refers to the side away from the wearer's skin when worn.
・「表面」是指構件的一面，該面當穿用時，靠近穿用者的肌膚；「背面」是指構件的一面，該面當穿用時，遠離穿用者的肌膚。・The "surface" refers to the side of the component that is close to the wearer's skin when worn; the "back" refers to the side of the component that is away from the wearer's skin when worn.
・「展開狀態」，是指不收縮和鬆弛地平坦展開的狀態。・The "expanded state" refers to the state of flat expansion without shrinkage or relaxation.
・「伸長率」是指將自然長度設為100%時的值。例如，伸長率為200%是指伸長倍率為2倍的相同意義。・"Elongation" refers to the value when the natural length is 100%. For example, the elongation rate of 200% means the same meaning as the elongation ratio of 2 times.
・「人工尿」是指將2wt%的尿素、0.8wt%的氯化鈉、0.03wt%的二水氯化鈣、0.08wt%的七水硫酸鎂及97.09wt%的離子交換水混合而成的混合物，若無特別地記載，是在溫度37℃使用。・"Artificial urine" refers to a mixture of 2wt% urea, 0.8wt% sodium chloride, 0.03wt% calcium chloride dihydrate, 0.08wt% magnesium sulfate heptahydrate, and 97.09wt% ion-exchange water The mixture, unless otherwise stated, is used at a temperature of 37°C.
・「凝膠強度」是以如下方式進行測定。在49.0g的人工尿中添加1.0g的高吸收性聚合物，並利用攪拌機攪拌。將生成的凝膠在40℃×60%RH的恒溫恒濕槽內放置3個小時後恢復到常溫，利用凝乳計(I.techno Engineering公司製造的Curdmeter-MAX ME-500)來測量凝膠強度。・"Gel strength" is measured as follows. Add 1.0 g of super absorbent polymer to 49.0 g of artificial urine, and stir with a mixer. The generated gel was placed in a constant temperature and humidity chamber of 40° C. × 60% RH for 3 hours and returned to normal temperature, and the gel was measured using a curdmeter (Curdmeter-MAX ME-500 manufactured by I.techno Engineering). intensity.
・「單位面積的質量」是以如下方式進行測定。將樣品或試驗片預備乾燥後放置到標準狀態（試驗場所的溫度為23±1℃、相對濕度為50±2%）的試驗室或裝置內，使其變成恒量的狀態。預備乾燥是指使樣品或試驗片在溫度為100℃的環境中成為恒量。另外，關於公定回潮率為0.0%的纖維，也可以不進行預備乾燥。使用樣品選取用的模板(100mm×100mm)，從變成恒量的狀態下的試驗片切取100mm×100mm的尺寸的樣品。測量樣品的重量，並乘上100倍來計算出每平方公尺的重量作為單位面積的質量。・"Mass per unit area" is measured as follows. After preparatory drying, the sample or test piece is placed in a test chamber or device in a standard state (the temperature of the test site is 23±1°C and the relative humidity is 50±2%), so that it becomes a constant state. Preliminary drying refers to making the sample or test piece become constant in an environment with a temperature of 100°C. In addition, for fibers with a common moisture regain of 0.0%, preliminary drying does not need to be performed. Using the template for sample selection (100mm×100mm), cut out a sample with a size of 100mm×100mm from the test piece in a constant state. Measure the weight of the sample and multiply by 100 times to calculate the weight per square meter as the mass per unit area.
・「厚度」採用自動厚度測定器（KES-G5便攜壓縮試驗機），在負荷為0.098N/cm2 、加壓面積為2cm2 的條件下自動測定。・"Thickness" is automatically measured using an automatic thickness measuring device (KES-G5 portable compression testing machine) under the conditions of a load of 0.098N/cm 2 and a pressurized area of 2cm 2 .
・「空隙率」是藉由以下方法測量的。亦即，矩形地切取中片中的接合部以外的部分來作為樣品。測定樣品的長度、寬度、厚度、重量。使用不織布的原料密度，來算出與樣品相同體積之當空隙率為0%時的假設重量。將樣品重量和假設重量帶入以下算式，以求得空隙率。 空隙率=[(假設重量-樣品重量)/假設重量]×100・"Void ratio" is measured by the following method. That is, the part other than the joint part in the middle piece was rectangularly cut out and used as a sample. Determine the length, width, thickness, and weight of the sample. Use the raw material density of the nonwoven fabric to calculate the hypothetical weight of the same volume as the sample when the void ratio is 0%. Plug the sample weight and assumed weight into the following equation to find the void fraction. Porosity=[(assumed weight-sample weight)/assumed weight]×100
・「吸水量」是根據JIS K7223-1996「高吸水性樹脂的吸水量試驗方法」來測定的。・"Water absorption capacity" is measured based on JIS K7223-1996 "Test method for water absorption capacity of super absorbent resin".
・吸水速度為使用2g高吸水性聚合物和50g生理鹽水且執行JIS K 7224-1996「高吸水性樹脂的吸水速度試驗方法」時的「至終點為止的時間」。・The water absorption rate is the "time to the end point" when JIS K 7224-1996 "Test method for water absorption rate of super absorbent resin" is performed using 2g of super absorbent polymer and 50 g of physiological saline.
・「KLEMM吸水度」是根據JIS P 8141：2004所規定的「紙和紙板-吸水度試驗方法-KLEMM法」所測定的KLEMM吸水度。・"KLEMM water absorption" is the KLEMM water absorption measured in accordance with "Paper and paperboard - Water absorption test method - KLEMM method" stipulated in JIS P 8141:2004.
・「保水量」是根據以下方法來測定的。準備MD方向10cm×CD方向10cm(面積100cm2 )的試驗片，並測定吸收前重量。接著，將試驗片浸泡在人工尿中5秒鐘之後，以拇指和食指輕輕地捏持任一個角部(以盡可能不擠出水的方式輕輕地捏持)，並以對向的角部朝向下方的方式吊掛，放置30秒鐘來使液體滴落。其後，當測定「負荷下保水量」時，將試驗片載置於重疊地鋪設的8張濾紙(縱150mm×橫150mm)上，並以對該試驗片的整個頂面施加負荷的方式，載置具有縱100mm×橫100mm的底面之四角柱狀的砝碼(重量3kg)，在經過5分鐘的時點除去砝碼(重物)，並測定試驗片的吸收後重量。當測定「無負荷下保水量」時，將試驗片載置於重疊地鋪設的8張濾紙上，該試驗片上不載置任何物件，並在經過5分鐘的時點測定試驗片的吸收後重量。基於這些測定結果，將吸收後重量與吸收前重量的差換算成面積每10cm2 之值，以作為「負荷下保水量」和「無負荷下保水量」。・"Water retention capacity" is measured according to the following method. A test piece of 10 cm in the MD direction × 10 cm in the CD direction (area 100 cm 2 ) was prepared, and the weight before absorption was measured. Next, soak the test piece in artificial urine for 5 seconds, then gently hold any corner with your thumb and index finger (gently hold it so as not to squeeze out water as much as possible), and hold it with the opposite sides. Hang it with the corners facing downwards and leave it for 30 seconds to allow the liquid to drip. Thereafter, when measuring the "water retention capacity under load", the test piece was placed on eight pieces of filter paper (length 150mm x width 150mm) laid overlappingly, and a load was applied to the entire top surface of the test piece. A weight (weight 3 kg) in the shape of a square prism having a bottom surface of 100 mm in length x 100 mm in width was placed, the weight (heavy object) was removed after 5 minutes, and the post-absorption weight of the test piece was measured. When measuring the "water retention capacity under no load", place the test piece on 8 overlapping pieces of filter paper without placing anything on the test piece, and measure the post-absorption weight of the test piece after 5 minutes. Based on these measurement results, the difference between the weight after absorption and the weight before absorption was converted into a value per 10 cm 2 of area, and was used as "water retention capacity under load" and "water retention capacity under no load".
・各部分的尺寸只要沒有特別記載，則是指展開狀態下而不是自然長度狀態下的尺寸。・Unless otherwise stated, the dimensions of each part refer to the expanded state and not the natural length.
・在沒有關於試驗或測定中的環境條件的記載的情況下，該試驗或測定是在標準狀態(試驗場所在23±1℃的溫度和50±2%的相對濕度)的試驗室或裝置內進行。・If there is no description of the environmental conditions during the test or measurement, the test or measurement is in a laboratory or device under standard conditions (the test site is at a temperature of 23±1°C and a relative humidity of 50±2%) conduct.
[產業上的可利用性] 本發明，除了上述例子的黏貼型拋棄式尿布之外，也能夠用於褲型拋棄式尿布、生理用衛生棉等全部的吸收性物品中。[Industrial availability] The present invention can be applied to all absorbent articles such as pants-type disposable diapers and sanitary napkins, in addition to the adhesive type disposable diapers of the above examples.
10:吸收性本體部10:Absorbent body part
11:不透液性片11: Liquid-impermeable sheet
12:外裝不織布12: Non-woven fabric for exterior
12T:靶片12T:Target film
13:緊固帶13: Fastening strap
13A:卡止部13A:Latching part
13B:帶本體部13B:With body part
13C:帶安裝部13C:With mounting part
30:頂片30: Top film
40:中間片40: Intermediate film
42:高吸水不織布42: Highly absorbent nonwoven fabric
42a:紙漿層42a:Pulp layer
42b:支持層42b: Support layer
42h:黏接劑42h: Adhesive
43:第一高吸收性聚合物粒子43: First super absorbent polymer particles
43h:黏接劑43h: Adhesive
45:包裝片45:Packaging sheet
45S:沒有被包裝片覆蓋的區域45S: Area not covered by packaging sheet
50:胞室吸收片50: Cellular absorption sheet
50c:凹部50c: concave part
50p:凸部50p:convex part
50d:上片的谷部的深度(凸部的高度)50d: Depth of the valley part of the upper piece (height of the convex part)
50h:黏接劑50h: Adhesive
51:上片51: Top
52:下片52: Next film
53:第二高吸收性聚合物粒子53: Second highly absorbent polymer particles
53A:散佈區域53A: Dispersion area
54:接合部54:Joint
54a:強接合部54a: Strong joint part
54b:弱接合部54b: Weak joint
54c:緣部接合部54c: Edge joint
54D:點間隔54D: dot interval
54L:在包圍胞室的方向上的接合部的尺寸54L: Dimensions of the junction in the direction surrounding the cell
54W:接合部的寬度54W: Width of joint
55:胞室55: cell compartment
55L:胞室的前後方向的尺寸(凸部的前後方向的尺寸)55L: Dimension of the cell in the front-to-back direction (dimension of the convex portion in the front-to-back direction)
55W:胞室的寬度方向的尺寸(凸部的寬度方向的尺寸)55W: Dimension in the width direction of the cell (dimension in the width direction of the convex portion)
55G:最擴大區塊55G: the largest block
55s:低膨脹胞室55s: low expansion cell compartment
56:空胞室56: Empty cell chamber
57:擴散性提升部57: Diffusibility improvement department
58:縱向強接合線58: Longitudinal strong bonding line
59:橫向強接合線59: Horizontal strong bonding line
60:立起皺褶60: Stand up pleats
62:皺褶片 62:Pleated sheet
63:皺褶彈性構件(彈性構件) 63: Pleated elastic member (elastic member)
64:腿圍彈性構件 64: Leg circumference elastic member
70:吸收體 70:Absorbent
71:上輔助層 71: Upper auxiliary layer
72:主吸收層 72: Main absorption layer
80:中片 80: medium film
80s:分隔距離 80s: separation distance
80h:黏接劑 80h: Adhesive
B:背側部分 B: dorsal part
F:腹側部分 F: ventral part
L:尿布的全長 L: full length of diaper
X:將緊固帶除外後的尿布的全寬 X: The full width of the diaper excluding the fastening tape
SF:側翼 SF: flank
EF:端翼 EF: end wing
LD:前後方向 LD: forward and backward direction
WD:寬度方向 WD: width direction
N:黏性液 N:Viscous liquid
U:非黏性液 U: non-viscous liquid
Z:假設的尿的***位置 Z: Hypothetical location of urine excretion
1-1,2-2,6-6,7-7,8-8,9-9:剖面線 1-1,2-2,6-6,7-7,8-8,9-9: hatching
P1:第一部分 P1:Part One
P2:第二部分 P2:Part Two
圖1是表示黏貼型拋棄式尿布的內表面之尿布的展開狀態的平面圖。 圖2是表示黏貼型拋棄式尿布的外表面之尿布的展開狀態的平面圖。 圖3是沿圖1中的6-6線的剖視圖。 圖4是沿圖1中的7-7線的剖視圖。 圖5(a)是沿圖1中的8-8線的剖視圖；圖5(b)是沿圖1中的9-9線的剖視圖。 圖6是沿圖1中的5-5線的剖視圖。 圖7(a)是吸收體的重要部分切開後的平面圖；圖7(b)是沿該圖7(a)中的1-1線的剖視圖。 圖8是吸收體的平面圖。 圖9是吸收體的平面圖。 圖10是沿圖8和圖9中的2-2線的剖視圖。 圖11是簡略地表示接合部之吸收體的平面圖。 圖12是表示胞室的各種配置例的概略平面圖。 圖13是各種胞室吸收片的剖視圖。 圖14是各種胞室吸收片的剖視圖。 圖15是表示吸收體的重要部分的剖視圖。 圖16是表示吸收體和包裝片的層構造的剖視圖。 圖17是表示吸收時的變化的剖視圖。 圖18是概略地表示高吸水不織布的層構造的剖視圖。 圖19是表示第一部分和第二部分的各種配置例的平面圖。FIG. 1 is a plan view showing the inner surface of an adhesive type disposable diaper in a unfolded state of the diaper. FIG. 2 is a plan view showing the outer surface of the adhesive type disposable diaper in the unfolded state of the diaper. FIG. 3 is a cross-sectional view along line 6-6 in FIG. 1 . FIG. 4 is a cross-sectional view along line 7-7 in FIG. 1 . Figure 5(a) is a cross-sectional view along line 8-8 in Figure 1; Figure 5(b) is a cross-sectional view along line 9-9 in Figure 1. Fig. 6 is a cross-sectional view along line 5-5 in Fig. 1 . Fig. 7(a) is a plan view of an important part of the absorber cut away; Fig. 7(b) is a cross-sectional view along line 1-1 in Fig. 7(a). Fig. 8 is a plan view of the absorber. Fig. 9 is a plan view of the absorber. FIG. 10 is a cross-sectional view along line 2-2 in FIGS. 8 and 9 . Fig. 11 is a plan view schematically showing the joint portion of the absorber. FIG. 12 is a schematic plan view showing various arrangement examples of cells. Figure 13 is a cross-sectional view of various cell absorbent sheets. Figure 14 is a cross-sectional view of various cell absorbent sheets. Fig. 15 is a cross-sectional view showing an important part of the absorber. Fig. 16 is a cross-sectional view showing the layer structure of the absorbent body and the packaging sheet. Fig. 17 is a cross-sectional view showing changes during absorption. Fig. 18 is a cross-sectional view schematically showing the layer structure of the highly water-absorbent nonwoven fabric. FIG. 19 is a plan view showing various arrangement examples of the first part and the second part.
國內寄存資訊 (請依寄存機構、日期、號碼順序註記) 無Domestic storage information (please note in order of storage institution, date and number) without
國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記) 無Overseas storage information (please note in order of storage country, institution, date, and number) without
42:高吸水不織布 42: Highly absorbent nonwoven fabric
42h:黏接劑 42h: Adhesive
43:第一高吸收性聚合物粒子 43: First super absorbent polymer particles
43h:黏接劑 43h: Adhesive
45:包裝片 45:Packaging sheet
50:胞室吸收片 50: Cellular absorption sheet
50h:黏接劑 50h: Adhesive
53:第二高吸收性聚合物粒子 53: Second highly absorbent polymer particles
70:吸收體 70:Absorbent
71:上輔助層 71: Upper auxiliary layer
72:主吸收層 72: Main absorption layer
N:黏性液 N:Viscous liquid
U:非黏性液 U: non-viscous liquid
WD:寬度方向 WD: width direction
P1:第一部分 P1:Part One
P2:第二部分 P2:Part Two
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-176971 | 2019-09-27 | ||
| JP2019176971A JP7153002B2 (en) | 2019-09-27 | 2019-09-27 | absorbent article |
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| Publication Number | Publication Date |
|---|---|
| TW202114609A TW202114609A (en) | 2021-04-16 |
| TWI834913B true TWI834913B (en) | 2024-03-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180353353A1 (en) | 2015-12-09 | 2018-12-13 | Daio Paper Corporation | Absorbent article |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180353353A1 (en) | 2015-12-09 | 2018-12-13 | Daio Paper Corporation | Absorbent article |
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