TW202009018A - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
TW202009018A
TW202009018A TW108130991A TW108130991A TW202009018A TW 202009018 A TW202009018 A TW 202009018A TW 108130991 A TW108130991 A TW 108130991A TW 108130991 A TW108130991 A TW 108130991A TW 202009018 A TW202009018 A TW 202009018A
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Taiwan
Prior art keywords
sheet
acid
top sheet
absorbent article
water
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TW108130991A
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Chinese (zh)
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松岡宏樹
山下有一
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日商大王製紙股份有限公司
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Publication of TW202009018A publication Critical patent/TW202009018A/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

To provide an absorbent article which reduces the burden on a wearer's skin. This absorbent article has a top sheet 30 provided on the skin side and an absorbent body 56 provided on the back side of the top sheet 30, wherein the top sheet 30 is configured from multiple layers, of which the layer positioned on the skin side does not contain acids and the layer positioned on the back side contains acids.

Description

吸收性物品Absorbent article

本發明關於一種吸收性物品，其頂片由複數個層來構成，前述複數個層之中的位於肌膚側的層不含酸，且位於背面側的層包含酸。The present invention relates to an absorbent article whose top sheet is composed of a plurality of layers. Among the plurality of layers, the layer on the skin side does not contain acid, and the layer on the back side contains acid.

吸收性物品的穿著者***出來的糞水或尿，是藉由吸收性物品來吸收。已吸收糞水或尿之部分的pH，是對應於***後的經過時間而變化。例如，在***尿的情況下，剛***後的吸收部位的pH值大多是6.5。伴隨時間的經過，尿中的尿素藉由水解酵素(例如尿素酶)而分解並產生阿摩尼亞。其結果，吸收部位的pH傾向鹼性側，有時也會成為pH11的程度。The excrement or urine excreted by the wearer of the absorbent article is absorbed by the absorbent article. The pH of the part that has absorbed fecal water or urine changes according to the elapsed time after excretion. For example, in the case of urinary excretion, the pH of the absorption site immediately after excretion is often 6.5. Over time, urea in the urine is broken down by hydrolytic enzymes (such as urease) to produce Armonia. As a result, the pH of the absorption site tends to be on the alkaline side, and may sometimes become about pH 11.

穿著者的肌膚與鹼性的吸收部位長時間的接觸，會對肌膚造成負擔。特別是，相較於大人，出生不久的兒童(低月齡時的兒童)的皮膚層較薄而容易對於肌膚造成負擔。Prolonged contact between the wearer's skin and the alkaline absorption site will cause a burden on the skin. In particular, compared with adults, the skin layer of children who are born shortly (children at the age of low months) is thin and easily burdens the skin.

存在有一種先前技術(下述專利文獻1至3)，其將酸性成分調配在吸收性物品的肌膚側的片材中，以防止由於排尿後產生的阿摩尼亞而造成***物傾向鹼性側。There is a prior art (Patent Documents 1 to 3 below) which mixes an acidic component in a sheet on the skin side of an absorbent article to prevent the excrement from becoming alkaline due to armonia generated after urination side.

專利文獻1的吸收性物品，在正面片上設置凸部，使弱酸化劑包含在該凸部的頂部和側壁部中，並且使側壁部的纖維密度比頂部的纖維密度更小。依據此吸收性物品，在被包含在頂部和側壁部中的弱酸化劑溶出到***液中的情況下，一定量的排出液也會作為殘留液而殘留在纖維密度小的側壁部中，所以能夠將凸部的pH維持在弱酸性。In the absorbent article of Patent Document 1, a convex portion is provided on the front sheet, the weak acidulant is contained in the top and the side wall portion of the convex portion, and the fiber density of the side wall portion is smaller than the fiber density of the top portion. According to this absorbent article, in the case where the weak acidulant contained in the top portion and the side wall portion is eluted into the excretion liquid, a certain amount of discharge liquid also remains as a residual liquid in the side wall portion with a low fiber density, so The pH of the convex portion can be maintained at a weak acidity.

專利文獻2的吸收性物品，具備含有富馬酸之片材，其在以紙作為主要材料之片基材中含有富馬酸；並且，在前述含有富馬酸之片材中的富馬酸含有率為0.00015質量%～1.5質量%。依據此吸收性物品，能夠預防穿著者的皮膚發炎，並且抑制***後的細菌繁殖從而抑制惡臭的發生，其結果能夠長時間維持抗菌和除臭消果。The absorbent article of Patent Document 2 includes a sheet containing fumaric acid, which contains fumaric acid in a sheet base material using paper as a main material; and, fumaric acid in the aforementioned sheet containing fumaric acid The content rate is 0.00015 mass% to 1.5 mass%. According to this absorbent article, it is possible to prevent the wearer's skin from being inflamed, and to suppress the propagation of bacteria after excretion, thereby suppressing the occurrence of malodor, and as a result, it is possible to maintain antibacterial and deodorize and eliminate fruit for a long time.

專利文獻3的吸收性物品，調配弱酸性紙漿作為吸收體的原料，將抗菌性的高吸收性聚合物混合在吸收體中，在吸收體中散布由粒狀體構成的檸檬酸，並且在吸收體的上方配置已含浸有蘋果酸之透液性片。依據此吸收性物品，藉由「弱酸性紙漿」、「抗菌性的高吸收性聚合物」、「檸檬酸」、「蘋果酸」的加乘效果，能夠飛躍性地提高在單獨或部分的組合中無法得到的長時間穿用時的除臭效果。The absorbent article of Patent Document 3 uses weak acid pulp as the raw material of the absorber, mixes the antibacterial high-absorbent polymer in the absorber, disperses the citric acid composed of granular bodies in the absorber, and absorbs A liquid-permeable sheet impregnated with malic acid is arranged above the body. Based on this absorbent article, the combination of "weak acid pulp", "antibacterial superabsorbent polymer", "citric acid", and "malic acid" can dramatically improve the combination of individual or partial Deodorant effect when worn for a long time that is not available in the medium.

[先前技術文獻] (專利文獻) 專利文獻1：日本專利6033981號公報 專利文獻2：日本特開2017-184962號公報 專利文獻3：日本特開2014-079284號公報[Prior Technical Literature] (Patent Literature) Patent Document 1: Japanese Patent No. 6033981 Patent Document 2: Japanese Patent Application Publication No. 2017-184962 Patent Document 3: Japanese Patent Application Publication No. 2014-079284

[發明所欲解決的問題] 若將酸性成分調配在吸收性物品的肌膚側的片材中，則會產生下述(A)～(C)的問題。 (A)若由於***而造成已調配在片材中的酸性成分流失，則在反覆地***的情況下就不能夠期待藉由酸性成分帶來的鹼性化抑止效果。 (B)在吸收性物品的穿著者沒有***的狀態下，包含酸性成分(例如pH3的程度)之片材持續地接觸穿著者的肌膚，會對肌膚造成負擔。 (C)吸收性物品之中，在承受體壓的部位中，尚未反應的酸性成分，可能會與***物一起回滲而接觸到穿著者的肌膚。[Problems to be solved by the invention] If the acidic component is blended in the sheet on the skin side of the absorbent article, the following problems (A) to (C) will occur. (A) If the acid component that has been formulated in the sheet is lost due to excretion, the effect of alkalinization suppression by the acid component cannot be expected when it is excreted repeatedly. (B) In a state where the wearer of the absorbent article is not excreted, a sheet containing an acidic component (for example, at a pH of about 3) continuously contacts the wearer's skin, which causes a burden on the skin. (C) Among absorbent articles, unreacted acidic components may be re-infiltrated together with excrement and come into contact with the wearer's skin at the site of body pressure.

進一步，在前述專利文獻1～3中會有以下問題。 專利文獻1記載的吸收性物品，必須在正面片上設置凸部，弱酸化劑的調配位置也受到限定，所以會有吸收性物品的構造受到限定，並且製造方法不容易簡略化的問題。Furthermore, the aforementioned patent documents 1 to 3 have the following problems. In the absorbent article described in Patent Document 1, it is necessary to provide a convex portion on the front sheet, and the placement position of the weak acidulant is also limited. Therefore, there is a problem that the structure of the absorbent article is limited and the manufacturing method is not easy to simplify.

專利文獻2記載的吸收性物品，使用含浸有富馬酸之片材，但是富馬酸不容易溶解在水中，所以要將富馬酸及親水劑一起塗敷到纖維上是困難的，而會有不容易製造的問題。The absorbent article described in Patent Document 2 uses a sheet impregnated with fumaric acid, but fumaric acid is not easily dissolved in water, so it is difficult to apply fumaric acid and a hydrophilic agent to fibers together, and There are problems that are not easy to manufacture.

專利文獻3記載的吸收性物品，使用了含浸有蘋果酸之頂片，但是蘋果酸會有對於皮膚的刺激性比較強的傾向而造成問題。The absorbent article described in Patent Document 3 uses a top sheet impregnated with malic acid, but malic acid tends to be relatively irritating to the skin and causes problems.

於是，本發明所要解決的問題在於提供一種吸收性物品，能夠減輕對於穿著者的肌膚的負擔。Therefore, the problem to be solved by the present invention is to provide an absorbent article that can reduce the burden on the wearer's skin.

[解決問題的技術手段] 解決了上述問題之黏貼型拋棄式尿布的各種態樣如下。 >第一態樣> 一種吸收性物品，具有設置在肌膚側之頂片、及設置在前述頂片的背面側之吸收體，該吸收性物品的特徵在於： 前述頂片由複數個層來構成； 前述複數個層之中，位於肌膚側的層不含酸且位於背面側的層包含酸。[Technical means to solve the problem] The various aspects of the adhesive-type disposable diaper that solve the above problems are as follows. >First aspect> An absorbent article having a top sheet provided on the skin side and an absorber provided on the back side of the top sheet. The absorbent article is characterized by: The aforementioned top sheet is composed of a plurality of layers; Among the plurality of layers, the layer on the skin side contains no acid and the layer on the back side contains acid.

(作用效果) 在第一態樣中，在頂片中不含酸。此頂片，與中間片和包裝片不同，具有直接接觸穿著者的肌膚之特殊性。因此，防止附著在頂片上之***物傾向(變成)鹼性側成為特別重要。於是，在頂片中含酸，藉此能夠防止朝向鹼性側的傾向，並且能夠減輕對於穿著者的肌膚的負擔。例如，在穿著者排尿的情況下，能夠藉由尿素酶來將尿中包含的尿素分解成阿摩尼亞，並且藉由頂片的酸來中和此阿摩尼亞。(Effect) In the first aspect, the topsheet contains no acid. This top sheet, unlike the middle sheet and the packaging sheet, has the particularity of directly contacting the wearer's skin. Therefore, it is particularly important to prevent the excreta adhering to the top sheet from tending to (becoming) the alkaline side. Thus, the top sheet contains acid, whereby the tendency toward the alkaline side can be prevented, and the burden on the wearer's skin can be reduced. For example, when the wearer urinates, the urea contained in the urine can be decomposed into Armonia by urease, and this Armonia can be neutralized by the acid of the top sheet.

另外，此頂片接觸穿著者的肌膚，所以在頂片中包含的酸可能對於穿著者的肌膚造成負擔。於是，由複數個層來構成頂片，並使得位於肌膚側的層不含酸，藉此來防止酸對於穿著者的肌膚造成負擔。In addition, this top sheet contacts the wearer's skin, so the acid contained in the top sheet may cause a burden on the wearer's skin. Thus, the top sheet is composed of a plurality of layers, and the layer on the skin side is free of acid, thereby preventing the acid from burdening the wearer's skin.

>第二態樣> 如前述第一態樣所述之吸收性物品，其中，在前述頂片中包含的酸是水溶性的酸； 前述頂片，包含前述水溶性的酸以及親水劑。>Second aspect> The absorbent article as described in the first aspect above, wherein the acid contained in the top sheet is a water-soluble acid; The top sheet contains the water-soluble acid and the hydrophilic agent.

(作用效果) 在頂片中包含的酸，優選為水溶性的酸。難溶性的酸，與親水劑的親和性低而不容易附著在構成頂片的纖維上。(Effect) The acid contained in the top sheet is preferably a water-soluble acid. The poorly soluble acid has low affinity with the hydrophilic agent and is not easily attached to the fibers constituting the top sheet.

若本態樣的吸收性物品的穿著者***，則***物與在頂片中包含的水溶性的酸接觸，而抑止***物的朝向鹼性側的傾向。When the wearer of the absorbent article of this aspect excretes, the excrement comes into contact with the water-soluble acid contained in the top sheet, thereby suppressing the tendency of the excrement toward the alkaline side.

又，藉由在頂片中包含的親水劑的作用，使得水溶性的酸不容易從頂片中流失。亦即，成為水溶性的酸在與親水劑化學結合的狀態下被保持在構成頂片的纖維間的構造，所以即使當反覆地排尿時，也會藉由親水劑的作用使得水溶性的酸不容易流失。這樣的頂片，例如，能夠藉由在構成頂片的纖維上塗敷水溶性的酸及親水劑來製造。Moreover, due to the action of the hydrophilic agent contained in the top sheet, water-soluble acids are not easily lost from the top sheet. That is, the water-soluble acid is held in the structure between the fibers constituting the topsheet in the state of being chemically combined with the hydrophilic agent, so even when urinating repeatedly, the water-soluble acid will be rendered water-soluble by the action of the hydrophilic agent Not easy to lose. Such a top sheet can be produced, for example, by coating a fiber constituting the top sheet with a water-soluble acid and a hydrophilic agent.

依據本實施態樣，即便在穿著者已進行複數次***後，仍保持在頂片中保持有水溶性的酸的狀態，所以能夠持續地抑止在頂片的內部殘留的***物的朝向鹼性側的傾向。另外，親水劑，用以防止水溶性的酸因為***而從頂片中流失，所以水溶性的酸和親水劑，優選為設置在俯視時的頂片的相同位置上。According to the present embodiment, even after the wearer has excreted a plurality of times, the water-soluble acid remains in the topsheet, so the excrement remaining inside the topsheet can be continuously restrained from being alkaline. Side tendency. In addition, the hydrophilic agent is used to prevent the water-soluble acid from being lost from the top sheet due to excretion. Therefore, the water-soluble acid and the hydrophilic agent are preferably provided at the same position of the top sheet when viewed from above.

又，當頂片是由疏水性纖維所構成時，該纖維的撥水效果會造成***物滯留在頂片的肌膚面上，而有***物不容易抵達吸收體的問題。如本態樣般，藉由在頂片中包含親水劑，能夠防止這樣的***物的滯留，並使***物迅速地抵達至吸收體。In addition, when the topsheet is composed of hydrophobic fibers, the water-repellent effect of the fibers may cause excreta to stay on the skin surface of the topsheet, and there is a problem that the excreta do not easily reach the absorber. As in this aspect, by including a hydrophilic agent in the top sheet, it is possible to prevent the retention of such excreta and allow the excreta to quickly reach the absorbent body.

>第三態樣> 如前述第二態樣所述之吸收性物品，其中，前述親水劑，包含：聚甘油脂肪酸酯、聚醚-聚酯嵌段共聚物、聚醚改質矽氧、或環氧乙烷加成多元醇之脂肪酸酯、或是這些的組合。>Third Aspect> The absorbent article as described in the second aspect above, wherein the hydrophilic agent comprises: polyglycerin fatty acid ester, polyether-polyester block copolymer, polyether modified silicone, or ethylene oxide plus Fatty acid esters into polyols, or a combination of these.

(作用效果) 在頂片中包含的親水劑，優選為防止水溶性的酸流失的效果高的親水劑。作為這種效果高的親水劑，也可以單體地使用聚甘油脂肪酸酯、聚醚-聚酯嵌段共聚物、聚醚改質矽氧、及環氧乙烷加成多元醇之脂肪酸酯，也可以使用這些的組合。又，也可以使用這些的任一種物質與習知的其他物質的組合。(Effect) The hydrophilic agent contained in the top sheet is preferably a hydrophilic agent having a high effect of preventing the loss of water-soluble acid. As such a highly effective hydrophilic agent, polyglycerin fatty acid ester, polyether-polyester block copolymer, polyether modified silicone, and ethylene oxide addition polyol fatty acid can also be used alone Ester can also use a combination of these. Also, any combination of these substances and other conventional substances may be used.

>第四態樣> 如前述第二態樣或第三態樣所述之吸收性物品，其中，包含前述水溶性的酸和前述親水劑之頂片， 在人工尿的滴下試驗中，第一次的測量結果是10點、第二次的測量結果是10點且第三次的測量結果是9點以上。>Fourth Aspect> The absorbent article as described in the second or third aspect, wherein the topsheet contains the water-soluble acid and the hydrophilic agent, In the artificial urine dropping test, the first measurement result was 10 points, the second measurement result was 10 points, and the third measurement result was 9 points or more.

(作用效果) 準備頂片，該頂片由複數個層來構成，在該複數個層之中，位於肌膚側的層不含水溶性的酸且位於背面側的層包含水溶性的酸，對於此頂片實行人工尿的滴下試驗，也可以將第一次的測量結果是10點、第二次的測量結果是10點且第三次的測量結果是9點以上之頂片，使用於吸收性物品。因為，即便在穿著者已進行複數次***後的情況下，水溶性的酸及親水劑也不容易自此頂片上流失，所以能夠長期地減輕對於穿著者的肌膚的負擔。另外，在人工尿的滴下試驗中使用的頂片的層數和層厚、頂片的纖維的原材料、製造方法等條件，全部都與實際上裝在吸收性物品中的頂片相同。(Effect) Prepare a top sheet, which is composed of a plurality of layers. Among the plurality of layers, the layer on the skin side does not contain water-soluble acid and the layer on the back side contains water-soluble acid. In the urine drip test, a top sheet of the first measurement result of 10 points, the second measurement result of 10 points, and the third measurement result of 9 points or more may be used for the absorbent article. Even after the wearer has excreted multiple times, the water-soluble acid and hydrophilic agent are not easily lost from the top sheet, so the burden on the wearer's skin can be reduced for a long time. In addition, the conditions such as the number and thickness of the top sheet used in the artificial urine dropping test, the raw material of the fiber of the top sheet, and the manufacturing method are all the same as the top sheet actually installed in the absorbent article.

人工尿的滴下試驗，依據下述(1)～(4)的手續實行。 >人工尿的滴下試驗> (1)將前述頂片放置在重疊10片的濾紙上，並將已開了10個孔之金屬製的治具放置在前述頂片上。 (2)使用微量滴管，在前述金屬製的治具的10個孔中，分別且滴下1mL的人工尿，滴下之後，在2秒以內確認前述頂片是否已吸收了前述人工尿，將已吸收了的孔計算為1點，將沒有吸收的孔計算為0點，並且將10個孔的合計點數記錄為第一次的測量結果。 (3)自前述(2)中滴下人工尿起算經過3分鐘後，使用微量滴管，在前述金屬製的治具的10個孔中，分別地滴下1mL的人工尿，滴下之後，在2秒以內確認前述頂片是否已吸收了前述人工尿，將已吸收了的孔計算為1點，將沒有吸收的孔計算為0點，並且將10個孔的合計點數記錄為第二次的測量結果。 (4)自前述(3)中滴下人工尿起算經過6分鐘後，使用玻璃滴管，在前述金屬製的治具的10個孔中，分別地滴下500μL的人工尿，滴下之後，在2秒以內確認前述頂片是否已吸收了前述人工尿，將已吸收了的孔計算為1點，將沒有吸收的孔計算為0點，並且將10個孔的合計點數記錄為第三次的測量結果。The dropping test of artificial urine is carried out according to the following procedures (1) to (4). >Drip test of artificial urine> (1) Place the top sheet on top of 10 sheets of filter paper, and place a metal jig with 10 holes on the top sheet. (2) Using a micro-dropper, drop 1 mL of artificial urine into each of the 10 holes of the metal fixture, and after dripping, confirm whether the top sheet has absorbed the artificial urine within 2 seconds. The absorbed holes were counted as 1 point, the non-absorbed holes were counted as 0 points, and the total number of points of 10 holes was recorded as the first measurement result. (3) After 3 minutes have elapsed since the artificial urine was dripped in the above (2), using a micro-dropper, drip 1 mL of artificial urine into each of the 10 holes of the metal fixture, and after dripping, in 2 seconds Confirm whether the topsheet has absorbed the artificial urine, count the absorbed holes as 1 point, calculate the non-absorbed holes as 0 points, and record the total number of 10 holes as the second measurement result. (4) After 6 minutes from the dripping of artificial urine in (3) above, using a glass dropper, drip 500 μL of artificial urine in each of the 10 holes of the metal fixture, and after dripping, in 2 seconds Confirm whether the topsheet has absorbed the artificial urine, count the absorbed holes as 1 point, calculate the non-absorbed holes as 0 points, and record the total number of 10 holes as the third measurement result.

在前述人工尿的滴下試驗中使用的人工尿，是將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、以及97.09wt%的離子交換水混合而成的人工尿。The artificial urine used in the aforementioned artificial urine dropping test is composed of 2wt% urea, 0.8wt% sodium chloride, 0.03wt% calcium chloride dihydrate, 0.08wt% magnesium sulfate heptahydrate, and 97.09wt Artificial urine mixed with% ion-exchanged water.

在前述人工尿的滴下試驗中使用的金屬製的治具，是寬度為210mm、長度為50mm、厚度為5mm的長方形，且重量為400g；各孔是直徑15mm的圓形，且在寬度方向和長度方向上隔開4mm的間隔，等間隔地設置。The metal fixture used in the artificial urine dropping test is a rectangle with a width of 210 mm, a length of 50 mm, and a thickness of 5 mm, and a weight of 400 g; each hole is a circle with a diameter of 15 mm, and in the width direction and In the longitudinal direction, they are spaced at intervals of 4 mm, and are arranged at equal intervals.

>第五態樣> 如前述第一態樣至第四態樣中的任一態樣所述之吸收性物品，其中，在前述頂片與前述吸收體之間設置有中間片； 前述中間片，包含水溶性的酸以及親水劑。>Fifth Aspect> The absorbent article according to any one of the first aspect to the fourth aspect, wherein an intermediate sheet is provided between the top sheet and the absorber; The aforementioned intermediate sheet contains a water-soluble acid and a hydrophilic agent.

(作用效果) 中間片沒有直接接觸穿著者的肌膚，但是當穿著者***後，***物有殘留在中間片內的可能性。再者，若此中間片內的***物鹼性化並回滲到頂片的肌膚面側(中間片內的***物朝向頂片的肌膚面側移動)，則接觸到穿著者的肌膚而對穿著者的肌膚造成負擔。於是，藉由在此中間片中包含水溶性的酸，能夠防止對於穿著者的肌膚造成負擔。(Effect) The intermediate sheet does not directly contact the skin of the wearer, but when the wearer excretes, there is a possibility that excrement remains in the intermediate sheet. Furthermore, if the excrement in this intermediate sheet is alkalized and re-infiltrated to the skin side of the top sheet (the excrement in the intermediate sheet moves toward the skin side of the top sheet), it contacts the wearer’s skin and wears on The skin of the person is burdened. Therefore, by including a water-soluble acid in this intermediate sheet, it is possible to prevent the burden on the wearer's skin.

又，一般來說，相較於頂片和包裝片，中間片大多比較蓬鬆。因此，相較於頂片和包裝片，在中間片的內部殘留的***物的量有比較多的傾向。因此在考慮回滲現象的情況下，在包含較多***物之中間片中包含水溶性的酸，比在包裝片中包含水溶性的酸更為有利。又，中間片比包裝片位於更靠肌膚側，所以自此觀點也可知在靠近肌膚側的中間片中包含水溶性的酸，比在包裝片中包含水溶性的酸更為有用。Also, generally speaking, the middle sheet is mostly bulkier than the top sheet and the packaging sheet. Therefore, compared with the top sheet and the packaging sheet, the amount of excrement remaining in the middle sheet tends to be larger. Therefore, in consideration of the phenomenon of re-infiltration, it is more advantageous to include a water-soluble acid in the intermediate sheet containing more excreta than to include a water-soluble acid in the packaging sheet. In addition, since the intermediate sheet is located on the skin side more than the packaging sheet, from this point of view, it is also known that the intermediate sheet close to the skin side contains a water-soluble acid and is more useful than the packaging sheet.

>第六態樣> 如前述第一態樣至第五態樣中的任一態樣所述之吸收性物品，其中，設置有包覆前述吸收體之包裝片； 前述包裝片，包含水溶性的酸以及親水劑。>Sixth Aspect> The absorbent article according to any one of the first aspect to the fifth aspect, wherein a packaging sheet covering the absorbent body is provided; The aforementioned packaging tablet contains a water-soluble acid and a hydrophilic agent.

(作用效果) 包裝片沒有直接接觸穿著者的肌膚，但是當穿著者***後，***物有殘留在包裝片內的可能性。再者，若此包裝片內的***物鹼性化並回滲到頂片的肌膚面側(包裝片內的***物朝向頂片的肌膚面側移動)，則接觸到穿著者的肌膚而對於穿著者的肌膚造成負擔。於是，藉由在此包裝片中包含水溶性的酸，能夠防止對於穿著者的肌膚造成負擔。又，一般來說，包裝片與保持***物之吸收體接觸的機會多。亦即，在包裝片中包含的水溶性的酸，對於吸收體保持的***物進行作用，所以***物的朝向鹼性側的傾向的抑止效果高。(Effect) The packaging sheet does not directly contact the wearer's skin, but when the wearer excretes, there is a possibility that excrement may remain in the packaging sheet. Furthermore, if the excrement in this packaging sheet is alkalized and re-permeated to the skin side of the top sheet (the excrement in the packaging sheet moves toward the skin side of the top sheet), it will contact the wearer’s skin The skin of the person is burdened. Therefore, by including a water-soluble acid in this packaging sheet, it is possible to prevent the burden on the wearer's skin. In addition, in general, there are many opportunities for the packaging sheet to come into contact with the absorbent body that holds the excrement. That is, since the water-soluble acid contained in the packaging sheet acts on the excrement held by the absorber, the effect of suppressing the tendency of the excrement toward the alkaline side is high.

>第七態樣> 如前述第一態樣至第六態樣中的任一態樣所述之吸收性物品，其中，前述頂片的纖維直徑為4.0dtex以上。>Seventh Aspect> The absorbent article according to any one of the first aspect to the sixth aspect, wherein the fiber diameter of the top sheet is 4.0 dtex or more.

(作用效果) 藉由將頂片的纖維直徑設為較粗，能夠迅速地吸收***物。因此，能夠減少***物接觸到穿著者的肌膚的時間。與此並行地，能夠防止***物堆積在頂片的正面而擴散到廣範圍中，所以能夠縮小***物附著至穿著者的肌膚之面積。其結果，能夠減輕***物的朝向鹼性側的傾向對於肌膚造成的負擔。這樣的頂片的纖維直徑，優選為4.0dtex以上，更優選為5.0tex以上。(Effect) By making the fiber diameter of the top sheet thicker, excreta can be quickly absorbed. Therefore, it is possible to reduce the time that the excrement contacts the wearer's skin. In parallel with this, it is possible to prevent excreta from accumulating on the front of the top sheet and spreading over a wide range, so it is possible to reduce the area where excreta adheres to the wearer's skin. As a result, the burden on the skin caused by the tendency of the excrement toward the alkaline side can be reduced. The fiber diameter of such a top sheet is preferably 4.0 dtex or more, and more preferably 5.0 tex or more.

>第八態樣> 如前述第一態樣至第六態樣中的任一態樣所述之吸收性物品，其中，前述頂片的前述複數個層之中，位於肌膚側的層的纖維直徑，比位於背面側的層的纖維直徑更小。>Eighth aspect> The absorbent article according to any one of the first aspect to the sixth aspect, wherein among the plurality of layers of the top sheet, the fiber diameter of the layer on the skin side is more than that on the back side The fiber diameter of the layer is smaller.

(作用效果) 由複數個層來構成頂片，且縮小位於肌膚側的層的纖維直徑，藉此使得肌膚觸感成為良好，所以能夠減輕對於穿著者的肌膚側造成的負擔。又，藉由加大位於背面側的層的纖維直徑，也能夠得到與前述第七態樣同樣的作用效果。(Effect) The top sheet is composed of a plurality of layers, and the fiber diameter of the layer on the skin side is reduced, thereby making the skin feel good, so the burden on the skin side of the wearer can be reduced. Also, by increasing the fiber diameter of the layer located on the back side, the same effect as the seventh aspect described above can be obtained.

>第九態樣> 如前述第八態樣所述之吸收性物品，其中，前述頂片的前述複數個層之中，位於前述肌膚側的層的纖維直徑為2.5dtex以下，位於前述背面側的層的纖維直徑為4.0dtex以上。>Ninth Aspect> The absorbent article according to the eighth aspect, wherein among the plurality of layers of the top sheet, the fiber diameter of the layer on the skin side is 2.5 dtex or less, and the fiber diameter of the layer on the back side is 4.0dtex or more.

(作用效果) 由複數個層來構成頂片，且縮小位於肌膚側的層的纖維直徑，藉此使得肌膚觸感成為良好，所以能夠減輕對於穿著者的肌膚側造成的負擔。又，藉由加大位於背面側的層的纖維直徑，也能夠得到與前述第七態樣所述之內容同樣的作用效果。(Effect) The top sheet is composed of a plurality of layers, and the fiber diameter of the layer on the skin side is reduced, thereby making the skin feel good, so the burden on the skin side of the wearer can be reduced. In addition, by increasing the fiber diameter of the layer on the back side, the same effects as those described in the seventh aspect can be obtained.

具體來說，位於肌膚側的層的纖維直徑，優選是設為2.5dtex以下，更優選是設為1.7dtex以下。又，位於背面側的層的纖維直徑，優選是設為4.0dtex以上，更優選是設為5.0dtex以上。將纖維直徑設在上述範圍中，藉此使得與前述第七態樣同樣的作用效果變得顯著。Specifically, the fiber diameter of the layer located on the skin side is preferably 2.5 dtex or less, and more preferably 1.7 dtex or less. In addition, the fiber diameter of the layer located on the back side is preferably 4.0 dtex or more, and more preferably 5.0 dtex or more. By setting the fiber diameter in the above range, the same effect as the aforementioned seventh aspect becomes remarkable.

>第十態樣> 如前述第一態樣至第九態樣中的任一態樣所述之吸收性物品，其中，在前述頂片與前述吸收體之間設置有中間片； 前述中間片的單位面積的重量為20gsm以上。>Tenth Aspect> The absorbent article according to any one of the first aspect to the ninth aspect, wherein an intermediate sheet is provided between the top sheet and the absorber; The weight per unit area of the intermediate sheet is 20 gsm or more.

(作用效果) 若穿著者的體壓施加在吸收性物品上，則可能發生吸收體所保持的***物朝向肌膚側移動的回滲現象。於是，將中間片的單位面積的重量設為較大，藉此能夠減少回滲的***物的量。特別是，若在頂片中包含的酸的一部分流失而被包含在吸收體中的狀態下產生回滲，則頂片的酸可能會附著在穿著者的肌膚上而對穿著者的肌膚造成負擔。能夠藉由將中間片的單位面積的重量設為較大來防止回滲以減輕這種負擔。中間片的單位面積的重量，優選是設為20gsm以上，更優選是設為30gsm以上。(Effect) If the wearer's body pressure is exerted on the absorbent article, a phenomenon in which the excretion held by the absorbent body moves toward the skin side may occur. Therefore, by setting the weight per unit area of the intermediate sheet to be large, it is possible to reduce the amount of excreted excrement. In particular, if a part of the acid contained in the top sheet is lost to be contained in the absorber, and re-infiltration occurs, the acid of the top sheet may adhere to the wearer's skin and burden the wearer's skin. . It is possible to reduce such a burden by setting the weight per unit area of the intermediate sheet to be larger to prevent back-wetting. The weight per unit area of the intermediate sheet is preferably 20 gsm or more, and more preferably 30 gsm or more.

>第十一態樣> 如前述第一態樣至第十態樣中的任一態樣所述之吸收性物品，其中，設置有包覆前述吸收體之包裝片； 前述包裝片的單位面積的重量為20gsm以上。>Eleventh Aspect> The absorbent article according to any one of the first aspect to the tenth aspect, wherein a packaging sheet covering the absorbent body is provided; The weight per unit area of the packaging sheet is 20 gsm or more.

(作用效果) 在第十態樣中，將中間片的單位面積的重量設為較大，藉此能夠減少回滲，而藉由將包裝片的單位面積的重量設為較大也能夠得到同樣的效果。包裝片的單位面積的重量，優選是設為20gsm以上，更優選是設為30gsm以上。(Effect) In the tenth aspect, setting the weight per unit area of the intermediate sheet to be large can reduce the re-infiltration, and the same effect can be obtained by setting the weight per unit area of the packaging sheet to be large. The weight per unit area of the packaging sheet is preferably 20 gsm or more, and more preferably 30 gsm or more.

>第十二態樣> 如前述第一態樣至第十一態樣中的任一態樣所述之吸收性物品，其中，前述酸是檸檬酸。>Twelfth Aspect> The absorbent article according to any one of the first aspect to the eleventh aspect, wherein the acid is citric acid.

(作用效果) 檸檬酸是可使用為食品添加物的程度而安全性高，且抑止鹼性化的效果高，因此是合適的。(Effect) Citric acid can be used as a food additive to a high degree of safety and has a high effect of suppressing alkalization, so it is suitable.

[發明的效果] 依據本發明，能夠減輕對於穿著者的肌膚的負擔。[Effect of invention] According to the present invention, the burden on the wearer's skin can be reduced.

圖1～圖5例示出了黏貼型拋棄式尿布作為吸收性物品，圖中的符號X示出除了連結帶以外之尿布的全寬，符號L示出尿布的全長。又，雖然未圖示，但是頂片30、中間片40、包裝片58、吸收體56、不透液性片11及外裝不織布12之間，分別地藉由熱熔黏接劑來黏接。熱熔黏接劑，能夠藉由狹縫式塗佈、連續線狀或點線狀的液珠塗佈、螺旋狀或Z狀等的噴塗、或圖案塗佈(利用凸版方式的熱熔黏接劑的轉印)等公知的手法來進行塗佈。取代或並用地，能夠在彈性構件的固定部分上，將熱熔黏接劑塗佈在彈性構件的外周面上，以將彈性構件固定在鄰接構件上。作為熱熔黏接劑，沒有特別限定，能夠使用例如EVA系、黏著橡膠系(彈性體系)、烯烴系、聚酯和聚醯胺系等的種類。作為接合各構成構件之接合手段，能夠使用熱封和超音波密封等原材料熔接手段。FIGS. 1 to 5 illustrate adhesive-type disposable diapers as absorbent articles. Symbol X in the figure shows the full width of the diaper except the connecting tape, and symbol L shows the full length of the diaper. Although not shown, the top sheet 30, the intermediate sheet 40, the packaging sheet 58, the absorber 56, the liquid-impermeable sheet 11, and the exterior nonwoven fabric 12 are respectively adhered by a hot-melt adhesive . Hot melt adhesives can be applied by slit coating, continuous linear or dot-and-drop bead coating, spiral or Z-shaped spray coating, or pattern coating (hot-melt bonding by relief method) Coating). Alternatively or in combination, it is possible to apply a hot-melt adhesive to the outer peripheral surface of the elastic member on the fixing portion of the elastic member to fix the elastic member to the adjacent member. The hot-melt adhesive is not particularly limited, and for example, EVA-based, adhesive rubber-based (elastic system), olefin-based, polyester, and polyamide-based types can be used. As a joining means for joining the constituent members, a material welding means such as heat sealing and ultrasonic sealing can be used.

此黏貼型拋棄式尿布，具有：延伸至比前後方向LD的中央更靠前側的腹側部分F、及延伸至比前後方向LD的中央更靠後側的背側部分B。又，此黏貼型拋棄式尿布，具有：被內置於包含胯部之範圍中的吸收體56、覆蓋吸收體56的正面側之透液性的頂片30、覆蓋吸收體56的背面側之不透液性片11、及覆蓋不透液性片11的背面側且構成製品外表面之外裝不織布12。This adhesive-type disposable diaper has a ventral portion F that extends to the front side of the center in the front-rear direction LD, and a back portion B that extends to the rear side of the center in the front-rear direction LD. In addition, this adhesive-type disposable diaper includes an absorber 56 built into the range including the crotch portion, a liquid-permeable top sheet 30 covering the front side of the absorber 56, and a backside covering the absorber 56. The liquid-permeable sheet 11 and the non-woven fabric 12 that cover the back side of the liquid-impermeable sheet 11 and constitute the outer surface of the product.

以下，針對各部的原材料和特徵部分依序說明。 (吸收體) 吸收體56，是吸收並保持***液體之部分，能夠藉由纖維的集合體來形成。作為此纖維集合體，除了對綿狀紙漿或合成纖維等短纖維進行積纖而成的集合體之外，還可以使用根據需要而對醋酸纖維素等合成纖維的絲束（纖維束）進行開纖而得到的長絲（filament）集合體。作為纖維的單位面積的重量，在對綿狀紙漿或短纖維進行積纖的情況下，例如可以是大約100～300g/m2 ，在長絲集合體的情況下，例如可以是大約30～120g/m2 。合成纖維的情況下的細度(纖度)例如為1～16dtex，優選為1～10dtex，更優選為1～5dtex。在長絲集合體的情況下，長絲也可以是非捲曲纖維，但是優選為捲曲纖維。捲曲纖維的捲曲度例如可以為每2.54釐米5～75個，優選為10～50個，更優選為大約15～50個。另外，可以使用均勻地捲曲的捲曲纖維。Hereinafter, the raw materials and characteristic parts of each part will be described in order. (Absorber) The absorber 56 is a part that absorbs and retains excretory liquid, and can be formed by an assembly of fibers. As this fiber aggregate, in addition to an aggregate formed by accumulating short fibers such as cotton pulp or synthetic fibers, a tow (fiber bundle) of synthetic fibers such as cellulose acetate may be used as needed. Fibre filament assembly. The weight per unit area of the fiber may be about 100 to 300 g/m 2 in the case of accumulating cotton pulp or short fibers, and may be about 30 to 120 g in the case of filament aggregates, for example. /m 2 . The fineness (fineness) in the case of synthetic fibers is, for example, 1 to 16 dtex, preferably 1 to 10 dtex, and more preferably 1 to 5 dtex. In the case of a filament assembly, the filament may be a non-crimped fiber, but it is preferably a crimped fiber. The curl degree of the crimped fiber may be, for example, 5 to 75 per 2.54 cm, preferably 10 to 50, and more preferably about 15 to 50. In addition, crimped fibers that are uniformly crimped may be used.

(高吸收性聚合物粒子) 可以使吸收體56的一部分或者全部含有高吸收性聚合物粒子。關於高吸收性聚合物粒子，除了“粒子”以外還包含“粉末”。作為高吸收性聚合物粒子，可以直接使用在這種吸收性物品中使用的高吸收性聚合物粒子。高吸收性聚合物粒子的粒徑並不特別限定，但期望是這樣的粒徑：例如在執行使用了500μm的標準篩（JIS Z 8801-1：2006）的篩選（5分鐘的振篩），並對在上述篩選中落下到篩子下方的粒子執行使用了180μm的標準篩（JIS Z 8801-1：2006）的篩選（5分鐘的振篩）時，殘留在500μm的標準篩上的粒子的比例為30重量%以下，且殘留在180μm的標準篩上的粒子的比例為60重量%以上。(Highly absorbent polymer particles) Part or all of the absorber 56 may contain superabsorbent polymer particles. The superabsorbent polymer particles include “powder” in addition to “particles”. As the superabsorbent polymer particles, the superabsorbent polymer particles used in such absorbent articles can be used directly. The particle size of the superabsorbent polymer particles is not particularly limited, but it is desirable that the particle size is, for example, a sieve (a vibration sieve of 5 minutes) using a standard sieve of 500 μm (JIS Z 8801-1:2006), When the particles that fell below the sieve in the above screening were screened using a 180 μm standard sieve (JIS Z 8801-1: 2006) (5 minute shaker), the proportion of particles remaining on the 500 μm standard sieve It is 30% by weight or less, and the proportion of particles remaining on a 180-μm standard sieve is 60% by weight or more.

作為高吸收性聚合物粒子的材料，可以無特別限定地使用，但吸水量為40g/g以上的材料是優選的。作為高吸收性聚合物粒子，有澱粉類、纖維素類、合成聚合物類等高吸收性聚合物粒子，可以使用澱粉-丙烯酸（鹽）接枝共聚合物、澱粉-丙烯腈共聚物的皂化物、羧甲基纖維素鈉交聯物和丙烯酸（鹽）聚合物等高吸收性聚合物粒子。作為高吸收性聚合物粒子的形狀，優選為通常使用的粉粒體狀，但是也可以使用其它的形狀。The material of the superabsorbent polymer particles can be used without particular limitation, but a material having a water absorption of 40 g/g or more is preferred. As the superabsorbent polymer particles, there are superabsorbent polymer particles such as starches, celluloses, and synthetic polymers. Saponification of starch-acrylic acid (salt) graft copolymers and starch-acrylonitrile copolymers can be used. Particles, high-absorbent polymer particles such as sodium carboxymethyl cellulose cross-linked products and acrylic acid (salt) polymers. As the shape of the superabsorbent polymer particles, it is preferably in the form of powders or granules generally used, but other shapes may be used.

作為高吸收性聚合物粒子，優選使用吸水速度為70秒以下、特別是40秒以下的高吸收性聚合物粒子。如果吸水速度過慢，則容易發生被供給到吸收體56內的液體返回到吸收體56外的所謂的回滲。As the superabsorbent polymer particles, it is preferable to use superabsorbent polymer particles having a water absorption rate of 70 seconds or less, particularly 40 seconds or less. If the water absorption rate is too slow, the so-called re-osmosis in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56 is likely to occur.

又，作為高吸收性聚合物粒子，優選使用凝膠強度為1000Pa以上的高吸收性聚合物粒子。藉此，即使在形成為蓬鬆的吸收體56的情況下，也能夠有效地抑制液體吸收後的黏膩感。In addition, as the superabsorbent polymer particles, it is preferable to use superabsorbent polymer particles having a gel strength of 1,000 Pa or more. With this, even in the case of the bulky absorbent body 56, the sticky feeling after absorption of the liquid can be effectively suppressed.

高吸收性聚合物粒子的單位面積的重量可以對應於根據該吸收體56的用途所要求的吸收量來適當地設定。因此，不能一概而論，但可以是50～350g/m2 。若聚合物的單位面積的重量小於50g/m2 ，則不容易確保吸收量。若聚合物的單位面積的重量超過350g/m2 ，則不僅效果飽和，高吸收性聚合物粒子的過多會造成小顆粒摩擦(產生沙沙聲音)的違和感。The weight per unit area of the superabsorbent polymer particles can be appropriately set according to the amount of absorption required according to the application of the absorbent body 56. Therefore, it cannot be generalized, but it can be 50 to 350 g/m 2 . If the weight per unit area of the polymer is less than 50 g/m 2 , it is not easy to ensure the absorption capacity. If the weight per unit area of the polymer exceeds 350 g/m 2 , not only will the effect be saturated, but too much superabsorbent polymer particles will cause a violation of the friction of small particles (a rustling sound).

(包裝片) 為了防止高吸收性聚合物粒子脫出、或為了提高吸收體56的形狀維持性，能夠內置有利用包裝片58包覆吸收體56而成的吸收部件50。作為包裝片58，可以使用薄頁紙（tissue paper）特别是縐紙、不織布、複合層壓不織布、開有小孔的片等。但是，期望是高吸收性聚合物粒子不會脫出的片。在使用不織布代替縐紙的情況下，特別優選親水性的SMMS（紡黏／熔噴／熔噴／紡黏）不織布，其材質可以使用聚丙烯、聚乙烯／聚丙烯等。(Packaging tablets) In order to prevent the superabsorbent polymer particles from coming out or to improve the shape-retaining properties of the absorber 56, an absorption member 50 formed by covering the absorber 56 with a packaging sheet 58 may be incorporated. As the packaging sheet 58, tissue paper, in particular, crepe paper, non-woven fabric, composite laminated non-woven fabric, a sheet with small holes and the like can be used. However, a sheet in which the superabsorbent polymer particles do not come out is desired. When non-woven fabric is used instead of crepe paper, a hydrophilic SMMS (spunbond/meltblown/meltblown/spunbond) nonwoven fabric is particularly preferred, and its material can be polypropylene, polyethylene/polypropylene, or the like.

此包裝片58，除了如圖3所示，作成一片包覆整個吸收體56的構造以外，也能夠作成上下2片等的複數片的片體來包覆整個吸收體56。也能夠省略包裝片58。As shown in FIG. 3, the packaging sheet 58 can be formed as a single sheet covering the entire absorbent body 56, or can be formed by plural sheets such as two upper and lower sheets to cover the entire absorbent body 56. The packaging sheet 58 can also be omitted.

包裝片58的單位面積的重量，優選為16gsm以上，更優選為20gsm以上。能夠藉由將包裝片58的單位面積的重量設為較大來防止吸收體56所保持的***物或酸回滲，以防止附著在穿著者的肌膚上而對於肌膚造成負擔。The weight per unit area of the packaging sheet 58 is preferably 16 gsm or more, and more preferably 20 gsm or more. By making the weight per unit area of the packaging sheet 58 larger, the excrement or acid held by the absorber 56 can be prevented from permeating to prevent it from adhering to the wearer's skin and burdening the skin.

(頂片) 頂片30是具有透液性的片，例如能夠使用有孔或無孔的不織布、或者多孔性塑膠片等。又，其中的不織布的原料纖維為何種並不特別限定。例如可以例示出聚乙烯或聚丙烯等烯烴系、聚酯系、聚醯胺系等合成纖維、人造纖維或銅氨纖維等再生纖維、棉等的天然纖維等、或者使用了它們中的兩種以上的混合纖維、複合纖維等。另外，不織布可以藉由任何加工來進行製造。作為加工方法，公知的方法能夠例示出例如水刺法、紡黏法、熱軋法、熔噴法、針刺法、熱風法、點黏法等。例如，若追求柔軟性、懸垂性，則水刺法是優選的加工方法，若追求蓬鬆性、柔性，則熱軋法是優選的加工方法。(Top film) The top sheet 30 is a sheet having liquid permeability, and for example, a nonwoven fabric with or without holes or a porous plastic sheet can be used. In addition, the raw fiber of the non-woven fabric is not particularly limited. For example, synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, regenerated fibers such as rayon or cuprammonic fibers, natural fibers such as cotton, or both may be used. The above mixed fiber, composite fiber, etc. In addition, the non-woven fabric can be manufactured by any processing. As a processing method, a well-known method can exemplify a spunlace method, a spun bond method, a hot rolling method, a melt blow method, a needle punch method, a hot air method, a point bonding method, etc. For example, if flexibility and drape are sought, the spunlace method is the preferred processing method, and if bulkiness and flexibility are sought, the hot rolling method is the preferred processing method.

頂片30，在前後方向上自製品前端延伸至後端，在寬度方向WD上延伸至比吸收體56更靠側方，但是當如後述的立起皺褶60的起點位於比吸收體56的側緣更靠寬度方向中央側時，則對應於需要，可以將頂片30的寬度作成比吸收體56的全寬更短等並進行適當的變形。The topsheet 30 extends from the front end to the rear end of the product in the front-rear direction, and extends to the side of the absorber 56 in the width direction WD. However, when the starting point of the rising wrinkle 60 described later is When the side edges are closer to the center side in the width direction, the width of the top sheet 30 may be shorter than the full width of the absorber 56 according to needs, and may be appropriately deformed.

頂片30的纖維直徑能夠任意地決定，但是優選為4.0dtex以上，更優選為5.0dtex以上。這樣一來，將頂片30的纖維直徑設為較粗，藉此能夠迅速地吸收***物。其結果，能夠減少***物接觸到穿著者的肌膚的時間。又，能夠防止***物堆積在頂片30的正面而擴散到廣範圍中，所以能夠縮小***物附著至穿著者的肌膚之面積。藉此，能夠減輕已附著在頂片30上的***物的朝向鹼性側的傾向對於肌膚造成的負擔。The fiber diameter of the top sheet 30 can be arbitrarily determined, but it is preferably 4.0 dtex or more, and more preferably 5.0 dtex or more. In this way, by making the fiber diameter of the top sheet 30 thicker, the excrement can be quickly absorbed. As a result, it is possible to reduce the time that the excrement contacts the wearer's skin. In addition, it is possible to prevent excreta from accumulating on the front surface of the top sheet 30 and spreading over a wide range, so it is possible to reduce the area where excreta adheres to the wearer's skin. This can reduce the burden on the skin caused by the tendency of the excrement adhered to the top sheet 30 toward the alkaline side.

又，優選為由複數個層來構成頂片30，並將位於肌膚側的層的纖維直徑，設為比位於背面側的層的纖維直徑更小。縮小位於肌膚側的層的纖維直徑，藉此使得肌膚觸感成為良好，所以能夠減輕對於穿著者的肌膚造成的負擔。又，加大位於背面側的層的纖維直徑，藉此可以進行***物的迅速的吸收。In addition, it is preferable that the top sheet 30 is composed of a plurality of layers, and the fiber diameter of the layer located on the skin side is made smaller than the fiber diameter of the layer located on the back side. By reducing the fiber diameter of the layer on the skin side, the skin feels good, so the burden on the wearer's skin can be reduced. In addition, by increasing the fiber diameter of the layer on the back side, excreta can be quickly absorbed.

具體來說，頂片30的複數個層之中，位於肌膚側的層的纖維直徑，優選是設為2.5dtex以下，更優選是設為1.7dtex以下。又，位於背面側的層的纖維直徑，優選是設為4.0dtex以上，更優選是設為5.0dtex以上。將纖維直徑設在這樣的範圍中，藉此穿著者容易感覺到肌膚觸感更良好，並且也能夠迅速地吸收***物。Specifically, among the plural layers of the top sheet 30, the fiber diameter of the layer located on the skin side is preferably 2.5 dtex or less, and more preferably 1.7 dtex or less. In addition, the fiber diameter of the layer located on the back side is preferably 4.0 dtex or more, and more preferably 5.0 dtex or more. By setting the fiber diameter in such a range, the wearer can easily feel that the skin feels better and can quickly absorb excreta.

(中間片) 為了使透過頂片30後的液體快速地向吸收體56移動，可以設置液體的透過速度比頂片30更快的中間片（也稱作“第二片”）40。此中間片40用於如下用途：使液體快速地向吸收體56移動而提高吸收體56的吸收性能，並防止所吸收的液體從吸收體56“回滲”的現象。也可以省略中間片40。(Intermediate) In order to quickly move the liquid after passing through the top sheet 30 to the absorber 56, an intermediate sheet (also referred to as a "second sheet") 40 having a faster liquid permeability than the top sheet 30 may be provided. This intermediate sheet 40 is used for the purpose of quickly moving the liquid to the absorbent body 56 to improve the absorption performance of the absorbent body 56 and to prevent the phenomenon that the absorbed liquid "seeps back" from the absorbent body 56. The intermediate sheet 40 may also be omitted.

作為中間片40，能夠例示出與頂片30相同的原材料、或者水刺不織布、紡黏不織布、SMS不織布、紙漿不織布、紙漿與人造纖維的混合片、點黏不織布或縐紙。特別是熱風不織布很蓬鬆，因此是優選的。對於熱風不織布，優選使用芯鞘結構的複合纖維，在該情況下，芯所使用的樹脂可以為聚丙烯（PP），但優選為剛度高的聚酯（PET）。不織布的原料纖維的粗細優選為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，優選使用芯不在中央的偏芯纖維、中空纖維、或偏芯且中空的纖維。As the intermediate sheet 40, the same raw material as the top sheet 30, or spunlace nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, pulp nonwoven fabric, mixed sheet of pulp and rayon, point-bonded nonwoven fabric, or crepe paper can be exemplified. In particular, the hot air non-woven fabric is very fluffy, so it is preferable. For the hot-air nonwoven fabric, it is preferable to use a composite fiber with a core-sheath structure. In this case, the resin used for the core may be polypropylene (PP), but it is preferably polyester with high rigidity (PET). The thickness of the raw fiber of the nonwoven fabric is preferably 2.0 to 10 dtex. In order to make the nonwoven fabric bulky, it is preferable to use eccentric fibers, hollow fibers, or eccentric and hollow fibers whose core is not the center of all or part of the mixed fibers.

圖示例的中間片40比吸收體56的寬度短且配置至中央，也可以設置為遍及整個寬度。又，中間片40也可以設置為遍及尿布的全長，也可以如圖示例般地僅設置在包含***位置之中間部分。The intermediate sheet 40 in the illustrated example is shorter than the width of the absorber 56 and is arranged to the center, and may be provided over the entire width. In addition, the intermediate sheet 40 may be provided over the entire length of the diaper, or may be provided only in the middle portion including the excretion position as shown in the example.

中間片40的單位面積的重量，優選是設為20gsm以上，更優選是設為30gsm以上。若穿著者的體壓施加在吸收性物品上，則可能發生吸收體56所保持的***物朝向肌膚側移動的回滲現象。如前述，將中間片40的單位面積的重量設為較大，藉此能夠減少回滲的***物的量。特別是，若在頂片30中包含的酸的一部分與***物一起流失而被包含在吸收體56中的狀態下產生回滲，則頂片30的酸可能會附著在穿著者的肌膚上而對穿著者的肌膚造成負擔。於是，可以藉由將中間片40的單位面積的重量設為較大來防止回滲，以減輕這種負擔。The weight per unit area of the intermediate sheet 40 is preferably 20 gsm or more, and more preferably 30 gsm or more. If the body pressure of the wearer is applied to the absorbent article, a phenomenon of re-osmosis in which the excrement held by the absorbent body 56 moves toward the skin side may occur. As described above, by setting the weight per unit area of the intermediate sheet 40 to be large, it is possible to reduce the amount of excretion. In particular, if a part of the acid contained in the topsheet 30 is lost together with excretion and is contained in the absorbent body 56 to cause re-infiltration, the acid of the topsheet 30 may adhere to the wearer's skin. Burden the wearer's skin. Therefore, the weight per unit area of the intermediate sheet 40 can be increased to prevent the back-wetting, so as to reduce such a burden.

(不透液性片) 不透液性片11沒有特別限定，但是優選為具有透濕性。作為不透液性片11，例如能夠適當地使用藉由下述方法獲得的多微孔性片：將無機填充劑在聚乙烯或聚丙烯等烯烴系樹脂中混煉並成型出片之後，沿單軸或雙軸方向拉伸。又，作為不透液性片11，能夠使用不織布作為基材以提高防水性。(Liquid-impermeable tablet) The liquid-impermeable sheet 11 is not particularly limited, but preferably has moisture permeability. As the liquid-impermeable sheet 11, for example, a microporous sheet obtained by a method obtained by kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene and molding the sheet can be suitably used. Uniaxial or biaxial stretching. In addition, as the liquid-impermeable sheet 11, a non-woven fabric can be used as a base material to improve water resistance.

不透液性片11，期望是在前後方向LD和寬度方向WD上與吸收體56相同或遍及更廣範圍地延伸，但是當存在有其他遮水構件時等，也能夠對應於需要，作成在前後方向LD和寬度方向WD上不會覆蓋吸收體56的端部之構造。The liquid-impermeable sheet 11 is desirably the same as the absorber 56 in the front-rear direction LD and the width direction WD or extends over a wider range. However, when other water-shielding members are present, it can also be made according to the needs. The end portion of the absorber 56 is not covered in the front-rear direction LD and the width direction WD.

(外裝不織布) 外裝不織布12覆蓋不透液性片11的整個背面側，以將製品外表面作成布般的外觀。作為外裝不織布12沒有特別限定，作為原材料纖維，能夠使用例如聚乙烯或聚丙烯等烯烴系、聚酯系、聚醯胺系等合成纖維、人造纖維或銅氨纖維等再生纖維、棉等的天然纖維等，作為加工法，能夠使用水刺法、紡黏法、熱軋法、熱風法、針刺法等。但是自肌膚觸感和強度兼顧的觀點來看，優選為紡黏不織布或SMS不織布、SMMS不織布等長纖維不織布。除了使用一片不織布以外，也能夠重疊地使用複數片不織布。當後者時，優選為將不織布彼此藉由熱熔黏接劑來黏接。當使用不織布時，期望的該纖維單位面積的重量為10～50g/m2 ，特別期望是15～30g/m2 。(Exterior non-woven fabric) The exterior non-woven fabric 12 covers the entire back side of the liquid-impermeable sheet 11 to give the outer surface of the product a cloth-like appearance. The exterior nonwoven fabric 12 is not particularly limited, and as raw material fibers, synthetic fibers such as olefin-based, polyester-based, and polyamide-based polyethylene, polypropylene, and synthetic fibers such as man-made fibers, cuprammonic fibers, and cotton can be used. Natural fibers and the like can be used as a processing method such as a spunlace method, a spunbond method, a hot rolling method, a hot air method, and a needle punching method. However, from the viewpoint of both skin feel and strength, long fiber nonwoven fabrics such as spunbond nonwoven fabric, SMS nonwoven fabric, and SMMS nonwoven fabric are preferred. In addition to using one piece of nonwoven fabric, plural pieces of nonwoven fabric can also be used in an overlapping manner. In the latter case, it is preferable to bond the nonwoven fabrics with a hot-melt adhesive. When a non-woven fabric is used, the weight per unit area of the fiber is desirably 10 to 50 g/m 2 , and particularly desirably 15 to 30 g/m 2 .

(立起皺褶) 為了阻止遍及在頂片30上橫向移動的***物，所謂的防止側漏，優選為在表面的寬度方向WD的兩側，設置有在穿著者的肌膚側立起的立起皺褶60。當然也能夠省略立起皺褶60。(Wrinkle up) In order to prevent the excrement moving laterally on the top sheet 30, the so-called side leakage prevention is preferably provided with standing folds 60 standing on the wearer's skin side on both sides of the surface width direction WD. Of course, the standing wrinkle 60 can also be omitted.

當採用立起皺褶60時，其構造沒有特別限定，能夠採用公知的各種構造。圖示例的立起皺褶60，藉由實質上在寬度方向WD上連續的皺摺片62、及以沿著前後方向LD延伸的伸長狀態被固定在此皺摺片62中的細長狀的皺摺彈性構件63所構成。作為此皺摺片62能夠使用撥水性不織布，又作為皺摺彈性構件63能夠使用橡膠線等。彈性構件，除了如圖1和圖12所示般分別設置複數條以外，也能夠分別設置1條。When the raised pleats 60 are used, the structure is not particularly limited, and various known structures can be used. The standing wrinkle 60 illustrated in the figure is fixed in the wrinkled sheet 62 by the wrinkled sheet 62 substantially continuous in the width direction WD and the elongated state extending in the front-rear direction LD. The elastic member 63 is folded. As the crumpled sheet 62, a water-repellent nonwoven fabric can be used, and as the crumpled elastic member 63, a rubber thread or the like can be used. As shown in FIGS. 1 and 12, a plurality of elastic members may be provided, and one elastic member may be provided.

皺摺片62的內表面，在頂片30的側部上具有寬度方向WD的接合起點，從此接合起點起算的寬度方向外側的部分，藉由熱熔黏接劑等而被接合在各側翼部SF的內表面，也就是在圖示例中的不透液性片11的側部及位於其寬度方向外側的外裝不織布12的側部。The inner surface of the wrinkled sheet 62 has a starting point in the width direction WD on the side of the top sheet 30, and the outer portion in the width direction from the starting point is joined to each side wing by a hot-melt adhesive or the like The inner surface of the SF, that is, the side portion of the liquid-impermeable sheet 11 and the side portion of the exterior nonwoven fabric 12 located on the outer side in the width direction in the illustrated example.

在腿部周圍，比立起皺褶60的接合起點更靠寬度方向內側，於製品前後方向兩端部被固定在頂片30上，但是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，並成為緊密貼合至身體表面。Around the leg, it is more inward in the width direction than the joining starting point of the raised wrinkle 60, and both ends in the front-rear direction of the product are fixed to the top sheet 30, but the part in between is a non-fixed free part. The contractile force of the elastic member 63 stands up and becomes tightly attached to the body surface.

(端翼部、側翼部) 圖示例的黏貼型拋棄式尿布，具有一對的端翼部EF和一對的側翼部SF，該對的端翼部EF分別自吸收體56的前側和後側延伸出來且不具有吸收體56，該對的側翼部SF也分別自吸收體56的兩方的側緣更靠側方地延伸出來且不具有吸收體56。側翼部SF，如圖示例，也可以藉由自具有吸收體56之部分連續的原材料(外裝不織布12)來構成，也可以藉由安裝其他原材料來形成。(End wing, side wing) The sticker-type disposable diaper illustrated in the figure has a pair of end flaps EF and a pair of side flaps SF that extend from the front and rear sides of the absorber 56 and have no absorber, respectively 56. The pair of side wings SF also extend laterally from both side edges of the absorber 56 without the absorber 56. The side wing portion SF, as shown in the example, may be composed of a raw material (exterior nonwoven fabric 12) that is continuous from the portion having the absorber 56, or may be formed by mounting other raw materials.

(平面皺褶) 在各側翼部SF中，固定有以沿著前後方向LD延伸的伸長狀態的由橡膠絲等細長狀彈性構件所構成的側彈性構件64，藉此以各側翼部SF的腿部周圍部分來構成平面皺褶。側彈性構件64，如圖示例，除了設置在皺摺片62的接合部分之中接合起點附近的寬度方向外側的皺摺片62與不透液性片11之間以外，也能夠設置在側翼部SF中的不透液性片11與外裝不織布12之間。側彈性構件64，除了如圖示例般地在各側設置複數條以外，也能夠在各側僅設置1條。(Flat wrinkle) Each side wing portion SF is fixed with a side elastic member 64 composed of an elongated elastic member such as a rubber wire or the like in an extended state extending in the front-rear direction LD, thereby forming a portion around the leg portion of each side wing portion SF Flat folds. As shown in the example, the side elastic member 64 can be provided on the side flaps in addition to the widthwise outer side of the wrinkled sheet 62 and the liquid-impermeable sheet 11 in the vicinity of the starting point of the joint of the wrinkled sheet 62 Between the liquid-impermeable sheet 11 and the exterior nonwoven fabric 12 in the part SF. The side elastic member 64 may be provided with only one on each side in addition to providing a plurality of sides on each side as shown in the example.

平面皺褶，是側彈性構件64的收縮力作用的部分(在圖中是側彈性構件64被圖示的部分)。藉此，除了僅在平面皺褶的部位存在有側彈性構件64的形態之外，也包含下述構造：雖然在遍及比平面皺褶更靠前側、後側或其兩側也存在有側彈性構件64，但是藉由側彈性構件64在平面皺褶的部分以外的一部位或多部位被細細地切斷、或沒有被固定在夾片上，或者此兩方一起實行，使得收縮力不作用在平面皺褶的以外的部分(實質上，等同於沒有設置彈性構件)且使得側彈性構件64的收縮力僅作用在平面皺褶上。The flat wrinkle is a portion where the contraction force of the side elastic member 64 acts (in the figure, the side elastic member 64 is illustrated). Thereby, in addition to the form in which the side elastic member 64 exists only in the part of the plane wrinkle, it also includes the following structure: although there are sides on the front side, the rear side, or both sides of the plane wrinkle The elastic member 64, but the side elastic member 64 is finely cut at one or more parts other than the flat wrinkled part, or is not fixed to the clip, or the two are implemented together, so that the contraction force does not It acts on a portion other than the flat wrinkle (essentially, it is equivalent to not providing an elastic member) and causes the contraction force of the side elastic member 64 to act only on the flat wrinkle.

(連結帶) 在背側部分B中的側翼部SF，分別設置有對於腹側部分F的外表面可拆裝地連結的連結帶13。當穿著尿布時，將連結帶13自腰部的兩側繞到腹側部分F的外表面，並將連結帶13的連結部13A連結至腹側部分F外表面的的適當部位。(Link belt) The side flap portions SF in the back side portion B are provided with connecting straps 13 that are detachably connected to the outer surface of the ventral portion F, respectively. When wearing a diaper, the connecting belt 13 is wound from both sides of the waist to the outer surface of the abdominal portion F, and the connecting portion 13A of the connecting belt 13 is connected to an appropriate portion of the outer surface of the abdominal portion F.

連結帶13的構造沒有特別限定，在圖示例中，具有被固定在側翼部SF上的基端部13C、及自此基端部13C朝向寬度方向WD外側延伸的延伸部13B。延伸部13B，具有片基材、及被設置在此片基材中的寬度方向中間部且與腹側外表面連結的連結部13A，且比此連結部13A更靠前端側的部分成為捏持部。The structure of the connecting belt 13 is not particularly limited, and in the illustrated example, it has a base end portion 13C fixed to the side wing portion SF, and an extension portion 13B extending from the base end portion 13C outward in the width direction WD. The extending portion 13B has a sheet base material and a connecting portion 13A provided in the widthwise middle portion of the sheet base material and connected to the outer surface of the ventral side, and the portion closer to the tip side than the connecting portion 13A becomes pinched unit.

作為連結部13A，除了設置機械性緊固件（面緊固件）的鉤材（凸材）外，也可以設置黏著劑層。鉤材在其連結面上具有多個卡合突起，作為卡合突起的形狀，存在（A）日文レ字状、（B）J字状、（C）蘑菇狀、（D）T字狀、（E）雙J字狀（使J字狀的結構背對背地結合而成的形狀）等，但也可以是任意的形状。As the connecting portion 13A, in addition to a hook material (protrusion material) provided with a mechanical fastener (face fastener), an adhesive layer may be provided. The hook material has a plurality of engaging protrusions on its connecting surface. As the shape of the engaging protrusions, there are (A) Japanese ray shape, (B) J shape, (C) mushroom shape, (D) T shape, (E) Double J-shaped (a shape formed by combining J-shaped structures back-to-back), etc., but may be any shape.

又，作為形成自基端部13C至延伸部13B為止之片基材，可以使用不織布、塑膠膜、複合層壓不織布、紙或這些材料的複合材料等，但是，細度為1.0～3.5dtex、單位面積的重量為20～100g/m2 且厚度為1mm以下的紡黏不織布、熱風不織布或水刺不織布是優選的。In addition, as the sheet base material formed from the base end portion 13C to the extension portion 13B, nonwoven fabric, plastic film, composite laminated nonwoven fabric, paper, or a composite material of these materials can be used. However, the fineness is 1.0 to 3.5 dtex, Spunbond nonwoven fabric, hot air nonwoven fabric, or spunlace nonwoven fabric having a weight per unit area of 20 to 100 g/m 2 and a thickness of 1 mm or less is preferable.

(靶片) 優選為，在腹側部分F中的與連結帶13連結的連結部位設置有靶部。靶部，如圖示例，能夠藉由將用以使連結變容易的靶片20貼附在腹側部位F的外表面來設置。靶片20，在連結部13A為鉤材的情況下，可以使用在由塑膠膜或不織布構成的片基材的表面上設置有多個能夠供鉤材的卡合突起纏繞的環形線而成的靶片，另外，在連結部13A為黏著材料層的情況下，可以採用富有黏著性這樣的對由表面平滑的塑膠膜構成的片基材的表面實施剝離處理後的靶片。另外，在腹側部分F中的與連結帶13連結的連結部位由不織布構成的情況，例如在具有圖示例的外裝不織布12的情況下，也可以省略靶片20，並使鉤材纏繞於外裝不織布12的纖維而連結。這種情況下，除了可以將作為記號的靶片20設在外裝不織布12與不透液性片11之間以外，也可以將記號印刷在外裝不織布12或不透液性片11的外表面。(Target) Preferably, a target portion is provided at the connecting portion of the abdominal portion F connected to the connecting belt 13. The target portion, as shown in the example, can be provided by attaching the target piece 20 for facilitating connection to the outer surface of the abdominal part F. For the target sheet 20, when the connecting portion 13A is a hook material, a surface of a sheet base material composed of a plastic film or a non-woven fabric may be provided with a plurality of looped wires that can be wound around the hook protrusion of the hook material For the target sheet, when the connecting portion 13A is an adhesive material layer, a target sheet subjected to a peeling treatment on the surface of a sheet base composed of a plastic film with a smooth surface can be used such that it is rich in adhesiveness. In addition, in the case where the connecting portion connected to the connecting belt 13 in the ventral portion F is made of non-woven fabric, for example, in the case of the exterior non-woven fabric 12 shown in the figure, the target 20 may be omitted and the hook material may be wound It is connected to the fibers of the nonwoven fabric 12 on the outside. In this case, in addition to providing the target sheet 20 as a mark between the exterior nonwoven fabric 12 and the liquid-impermeable sheet 11, the mark may be printed on the outer surface of the exterior nonwoven fabric 12 or the liquid-impermeable sheet 11.

(翼部分) 本黏貼型拋棄式尿布，如圖1、圖2所示，具有自腹側部分F的前後方向LD的中間延伸至背側部分B的前後方向LD的中間為止的胯部M。又，腹側部分F和背側部分B，具有比胯部M更往寬度方向WD外側伸出的翼部分WP。腹側部分F的翼部分的下緣，以隨著自胯部M的側緣的前端朝向前方而傾斜地位於外側的方式延伸；背側部分B的翼部分的下緣，以隨著自胯部M的側緣的後端朝向後方而傾斜地位於外側的方式延伸。翼部分WP的側緣在圖示例中呈直線狀，但是不限定於此，也能夠採用公知的其他形狀。胯部M的前後方向LD的尺寸能夠適當地決定，能夠設為胯部M的最小寬度MX 的1.2～1.4倍的程度。在嬰幼兒用途的情況下，胯部M的前後方向LD的尺寸MY 是10～30cm的程度。(Wing portion) As shown in FIGS. 1 and 2, the present adhesive-type disposable diaper has a crotch portion M extending from the middle of the front-back direction LD of the abdominal portion F to the middle of the front-back direction LD of the back portion B. In addition, the ventral portion F and the dorsal portion B have a wing portion WP that protrudes more outward in the width direction WD than the crotch portion M. The lower edge of the wing portion of the ventral portion F extends obliquely to the outside as the front end of the side edge of the crotch portion M toward the front; the lower edge of the wing portion of the dorsal portion B follows the self-crotch portion The rear end of the side edge of M extends obliquely outward toward the rear. The side edge of the wing portion WP is linear in the illustrated example, but it is not limited to this, and other known shapes can be adopted. The size of the crotch portion M in the front-rear direction LD can be appropriately determined, and can be set to be about 1.2 to 1.4 times the minimum width M X of the crotch portion M. In the case of infant use, crotch longitudinal direction LD of the size M M Y is the degree of 10 ~ 30cm.

(水溶性的酸及親水劑) 在吸收性物品的頂片30中包含水溶性的酸。此頂片30，優選為進一步包含親水劑。又，優選為不僅在頂片30中，在中間片40和包裝片58的任一方中、或在中間片40和包裝片58的兩方中包含水溶性的酸。在此情況下，優選為也包含水溶性的酸以及親水劑。另外，在以下說明中，針對在頂片30中包含的水溶性的酸(及親水劑)進行說明，但是在沒有特別規定的情況下，在中間片40和包裝片58也是同樣的構成。(Water-soluble acid and hydrophilic agent) The topsheet 30 of the absorbent article contains a water-soluble acid. The topsheet 30 preferably further contains a hydrophilic agent. In addition, it is preferable to include a water-soluble acid not only in the top sheet 30, but also in either one of the intermediate sheet 40 and the packaging sheet 58, or in both the intermediate sheet 40 and the packaging sheet 58. In this case, it is preferable to also contain a water-soluble acid and a hydrophilic agent. In the following description, the water-soluble acid (and hydrophilic agent) contained in the top sheet 30 will be described. However, unless otherwise specified, the intermediate sheet 40 and the packaging sheet 58 have the same configuration.

作為水溶性的酸，能夠沒有特別限定地使用，但是以pH2～4的酸是合適的。在pH的值小於2的情況下，當酸附著在穿著者的肌膚上時，會對肌膚造成負擔而不利。又，在pH的值大於4的情況下，要有效地抑制***物朝向鹼性側傾斜是困難的而不利。作為水溶性的酸的具體例，能夠舉例有檸檬酸、酒石酸、蘋果酸、乳酸等，特別優選為可使用為食品添加物的程度而安全性高的檸檬酸、乳酸。因為要使此水溶性的酸即便在已反覆地排尿後，酸成分也不容易流失到吸收體側的理由，所以優選為藉由塗敷來固定在構成頂片30的纖維上，但是也可以在尿布加工機中，在尿布製造時的生產線(in line)上利用噴塗等其他方法來固定在頂片30上。另外，一般來說，水溶性的酸，不依靠化學結合地被固定在構成不織布的纖維間的間隙中。因此，排尿可能會造成與尿一起自不織布上流失。於是，也可以將水溶性的酸及親水劑一起塗敷在不織布纖維上，即使當反覆地排尿時也不容易流失。The water-soluble acid can be used without particular limitation, but an acid having a pH of 2 to 4 is suitable. In the case where the pH value is less than 2, when the acid adheres to the wearer's skin, it will cause a burden on the skin and is unfavorable. In addition, in the case where the pH value is greater than 4, it is difficult and unfavorable to effectively suppress the excretion from tilting toward the alkaline side. Specific examples of the water-soluble acid include citric acid, tartaric acid, malic acid, and lactic acid. Particularly preferred are citric acid and lactic acid that are safe enough to be used as food additives. The reason why this water-soluble acid is not likely to be lost to the absorber side even after repeated urination is repeated, so it is preferably fixed to the fiber constituting the top sheet 30 by coating, but it may be In the diaper processing machine, the top sheet 30 is fixed on the in line at the time of diaper manufacturing by spray coating or other methods. In addition, in general, the water-soluble acid is fixed in the gap between the fibers constituting the nonwoven fabric without relying on chemical bonding. Therefore, urination may cause loss from the non-woven fabric together with urine. Therefore, it is also possible to apply the water-soluble acid and the hydrophilic agent together to the non-woven fabric fiber, so that it is not easily lost even when urinating repeatedly.

作為使用於前述用途之親水劑，能夠沒有特別限定地使用，例如舉例有各種的界面活性劑(陰離子性、陽離子性、兩性離子性及非離子性)的典型的親水劑。具體來說，例如能夠使用聚甘油脂肪酸酯、聚醚-聚酯嵌段共聚物、聚醚改質矽氧、環氧乙烷加成多元醇之脂肪酸酯等。此親水劑，當反覆地排尿時使得酸不會流失到吸收體56側，所以適合藉由塗敷在構成頂片30的纖維上來固定，但是也可以在尿布加工機中，在尿布製造時的生產線上利用噴塗等其他方法來固定在頂片30上。The hydrophilic agent used in the aforementioned application can be used without particular limitation, and examples include typical hydrophilic agents of various surfactants (anionic, cationic, zwitterionic, and nonionic). Specifically, for example, fatty acid esters of polyglycerin fatty acid esters, polyether-polyester block copolymers, polyether-modified silicones, and ethylene oxide addition polyols can be used. This hydrophilic agent prevents acid from being lost to the side of the absorber 56 when urinating repeatedly, so it is suitable for fixing by coating on the fibers constituting the topsheet 30, but it can also be used in diaper processing machines during diaper manufacturing The production line is fixed on the top sheet 30 by spraying or other methods.

如以上所製造的頂片30，成為水溶性的酸已附著在構成頂片30的纖維的外表面上的狀態。與此並行地，也可以作成水溶性的酸被填充在構成頂片30的複數條纖維間的間隙中的狀態。進一步，若作成使水溶性的酸浸透到構成頂片30的纖維本身的內部的狀態，則即便複數次***也不容易使得水溶性的酸流失，因此是合適的。The top sheet 30 manufactured as described above is in a state where water-soluble acid has adhered to the outer surface of the fibers constituting the top sheet 30. In parallel with this, a state in which a water-soluble acid is filled in the gap between the plurality of fibers constituting the top sheet 30 may be made. Furthermore, if the water-soluble acid is impregnated into the fiber itself constituting the topsheet 30, it is not easy to cause the water-soluble acid to be lost even if it is excreted multiple times, which is suitable.

針對包含水溶性的酸及親水劑之頂片30，實行以下的人工尿的滴下試驗，也可以將第一次的測量結果為10點、第二次的測量結果為10點且第三次的測量結果為9點以上之頂片30裝在吸收性物品中。 (人工尿的滴下試驗方法) (1)將包含親水劑之頂片30放置在重疊10片的濾紙上，並將已開了10個孔之金屬製的治具70放置在前述頂片30上。另外，本試驗，為了確認當已反覆地***之際，在頂片30中包含的親水劑是否為不容易流失，所以在此試驗中使用的頂片30中不一定要包含水溶性的酸。 (2)(第一次的測量) 使用微量滴管，在每1個孔中分別地滴下1mL的人工尿(已添加下述色素之人工尿)(亦即，對於10個孔，滴下合計10mL的人工尿)。人工尿滴下之後，在2秒以內確認不織布(稱為頂片，以下，在滴下試驗方法的記載中是同樣的)是否已吸收了人工尿。當人工尿殘留在不織布上時(通常為，當人工尿成為球狀且載置於不織布上的狀態時)，記錄為不織布沒有吸收人工尿。另一方面，當人工尿沒有殘留在不織布上時，記錄為不織布吸收人工尿。對10個孔分別地實行此記錄作業。亦即，記錄在2秒以內，10處中有幾處是人工尿已透過不織布的處所。然後，將已吸收了的孔計算為1點，將沒有吸收的孔計算為0點，並且記錄10個孔的合計點數。 (3)(第二次的測量) 自前述(2)中滴下人工尿(已添加下述色素之人工尿)後，等待經過3分鐘，3分鐘經過後，再次使用微量滴管，在每1個孔中分別地滴下1mL的人工尿。然後，利用與前述(2)同樣的要領來記錄合計點數。 (4)(第三次的測量) 自前述(3)中滴下人工尿(已添加下述色素之人工尿)後，等待經過6分鐘，6分鐘經過後，再次使用玻璃滴管，在每1個孔中分別地滴下500μL的人工尿。然後，利用與前述(2)同樣的要領來記錄合計點數。 (5)在前述(2)～(4)的記錄結果中，也可以將第一次的測量結果為10點、第二次的測量結果為10點且第三次的測量結果為9點以上之頂片30裝在吸收性物品中。即便在已複數次***的情況下，也能夠判斷親水劑為不容易流失。 (濾紙) 作為前述試驗中使用的濾紙，例如能夠使用250mm×250mm的正方形的ADVENTEC公司的FILTER PAPER。 (金屬製的治具) 作為金屬製的治具70，使用以下的治具。 寬度210mm、長度50mm、厚度5mm的長方形，且重量為400g；直徑15mm的孔71，在寬度方向和長度方向上隔開4mm的間隔，等間隔地開了10個孔。 (人工尿) 作為前述試驗中使用的人工尿，使用以下的人工尿。 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人工尿。 (色素) 將約5g的KIRIYA公司的食用青色1號(Brilliant Blue FCF)(包裝樣式：粉末)溶解並調製在約300ml的上述人工尿中。 (滴管) 作為前述人工尿的滴下試驗中使用的微量滴管，能夠使用例如Biohit Proline Pipette 100～1000μ1(型號：720050)。又，作為前述人工尿的滴下試驗中使用的玻璃滴管，能夠使用例如MARUEMU公司的KOMA5 5ml(型號：0801-04)。For the topsheet 30 containing a water-soluble acid and a hydrophilic agent, the following artificial urine drip test is performed, and the first measurement result may be 10 points, the second measurement result may be 10 points, and the third The top sheet 30 having a measurement result of 9 points or more is contained in the absorbent article. (Dropping test method of artificial urine) (1) Place the top sheet 30 containing the hydrophilic agent on the filter paper that overlaps 10 sheets, and place the metal jig 70 made of 10 holes on the top sheet 30. In addition, in this test, in order to confirm whether the hydrophilic agent contained in the top sheet 30 is not easily lost when excreted repeatedly, the top sheet 30 used in this test does not necessarily contain a water-soluble acid. (2) (The first measurement) Using a microdropper, 1 mL of artificial urine (artificial urine to which the following pigment has been added) was dropped into each well (that is, 10 mL of artificial urine was added to 10 wells). After the artificial urine was dropped, it was confirmed within 2 seconds whether the non-woven fabric (called the top sheet, hereinafter, the same in the description of the dropping test method) had absorbed the artificial urine. When the artificial urine remains on the nonwoven fabric (usually, when the artificial urine becomes spherical and is placed on the nonwoven fabric), it is recorded that the nonwoven fabric does not absorb the artificial urine. On the other hand, when the artificial urine did not remain on the nonwoven fabric, it was recorded that the nonwoven fabric absorbed artificial urine. This recording operation is performed separately for 10 holes. That is, within 2 seconds of recording, several of the 10 places are places where artificial urine has passed through the non-woven fabric. Then, the absorbed holes were counted as 1 point, and the non-absorbed holes were counted as 0 points, and the total number of points of 10 holes was recorded. (3) (second measurement) After dropping artificial urine (artificial urine to which the following pigment has been added) from the above (2), wait for 3 minutes to elapse, and after 3 minutes, use a micro-dropper again and drop 1 mL of artificial urine into each well . Then, the total points are recorded using the same method as in (2) above. (4) (The third measurement) After dropping artificial urine (artificial urine to which the following pigment has been added) from the above (3), wait for 6 minutes, and after 6 minutes, use a glass dropper to drop 500 μL of artificial urine into each well . Then, the total points are recorded using the same method as in (2) above. (5) In the recording results of the aforementioned (2) to (4), the first measurement result may be 10 points, the second measurement result may be 10 points, and the third measurement result may be 9 points or more The topsheet 30 is contained in the absorbent article. Even when excreted multiple times, it can be judged that the hydrophilic agent is not easily lost. (filter paper) As the filter paper used in the aforementioned test, for example, FILTER PAPER of ADVENTEC company of 250 mm×250 mm square shape can be used. (Metal fixture) As the metal jig 70, the following jig is used. A rectangle with a width of 210 mm, a length of 50 mm, and a thickness of 5 mm, and a weight of 400 g; a hole 71 with a diameter of 15 mm, with 4 mm intervals in the width direction and the length direction, 10 holes are opened at equal intervals. (Artificial urine) As the artificial urine used in the aforementioned test, the following artificial urine was used. Artificial urine composed of 2wt% urea, 0.8wt% sodium chloride, 0.03wt% calcium chloride dihydrate, 0.08wt% magnesium sulfate heptahydrate, and 97.09wt% ion exchanged water. (pigment) About 5 g of KIRIYA's edible cyan No. 1 (Brilliant Blue FCF) (packing style: powder) was dissolved and prepared in about 300 ml of the above-mentioned artificial urine. (dropper) As the microdropper used in the artificial urine dropping test, for example, Biohit Proline Pipette 100 to 1000 μ1 (model number: 720050) can be used. In addition, as the glass dropper used in the artificial urine dropping test, for example, 5 ml of KOMA5 (model number: 0801-04) of MARUEMU Corporation can be used.

親水劑，成為與水溶性的酸一起附著在構成頂片30的纖維的外表面上的狀態。親水劑，也可以作成與水溶性的酸一起，被填充在構成頂片30的纖維之間的間隙中。又，若成為使水溶性的酸及親水劑浸透構成頂片30的纖維本身的內部的狀態，則即便複數次***也不容易使水溶性的酸及親水劑流失，所以持續地抑止***物的朝向鹼性側的傾向的效果高。The hydrophilic agent is attached to the outer surface of the fibers constituting the topsheet 30 together with the water-soluble acid. The hydrophilic agent may be made to fill the gap between the fibers constituting the top sheet 30 together with the water-soluble acid. In addition, if the water-soluble acid and the hydrophilic agent penetrate the interior of the fiber constituting the topsheet 30, the water-soluble acid and the hydrophilic agent will not be easily lost even if excreted multiple times, so the excrement is continuously suppressed The effect toward the alkaline side is high.

若吸收性物品的穿著者***，則***物與在頂片30中包含的水溶性的酸接觸，而抑止***物的朝向鹼性側的傾向。例如，若穿著者排尿，則殘存在頂片30中的尿素，伴隨時間經過，藉由尿素酶被水解而形成阿摩尼亞，並且在頂片30中包含的水溶性的酸與此阿摩尼亞反應，而防止***物的pH傾向鹼性側。詳細來說，藉由前述水溶性的酸來抑止阿摩尼亞的產生，並且中和已產生的阿摩尼亞。這樣一來，藉由水溶性的酸來使得***物不會傾向鹼性側，即便假設***物回滲而持續地接觸穿著者的肌膚，對於肌膚的負擔也會變小。When the wearer of the absorbent article excretes, the excrement comes into contact with the water-soluble acid contained in the topsheet 30, thereby suppressing the tendency of the excrement toward the alkaline side. For example, if the wearer urinates, the urea remaining in the topsheet 30 will be hydrolyzed by urease to form Armonia over time, and the water-soluble acid contained in the topsheet 30 and this Amor Nia reaction, while preventing the pH of excreta to tend to the alkaline side. In detail, the aforementioned water-soluble acid suppresses the production of Armonia and neutralizes the produced Armonia. In this way, the excretion does not tend to the alkaline side due to the water-soluble acid, and even if the excretion is allowed to permeate and continue to contact the wearer's skin, the burden on the skin will be reduced.

另外，若在頂片30中包含的水溶性的酸，因為***而流失到吸收體56中，則在第2次以後的***之際就不能夠有效地防止***物地朝向鹼性側的傾向。特別是，在就寢時穿著的拋棄式尿布等中，在穿著時預想會有複數次***，所以抑止這種不便的發生的必要性高。因此，在關於本發明之頂片30中，包含親水劑。藉由此親水劑來將水溶性的酸牢固地固定在構成頂片30的纖維上，即便複數次***也不容易使水溶性的酸流失，而能夠持續地抑止***物的朝向鹼性側的傾向。In addition, if the water-soluble acid contained in the top sheet 30 is lost to the absorbent body 56 due to excretion, the tendency of excrement to be directed toward the alkaline side cannot be effectively prevented during the second and subsequent excretion . In particular, a disposable diaper or the like worn at bedtime is expected to be excreted multiple times during wearing, so it is highly necessary to suppress the occurrence of such inconvenience. Therefore, the topsheet 30 concerning the present invention contains a hydrophilic agent. With this hydrophilic agent, the water-soluble acid is firmly fixed to the fibers constituting the topsheet 30, and even if excreted multiple times, the water-soluble acid is not easily lost, and the excrement can be continuously suppressed toward the alkaline side. tendency.

相對於頂片30之水溶性的酸的調配量，優選是設為0.02%～0.07%，更優選是設為0.03%～0.05%。在調配量比0.07%更多的情況下，當酸附著在穿著者的肌膚上時，會對肌膚造成負擔而不利。又，在調配量比0.02%更少的情況下，要有效地抑制***物傾向鹼性側是困難的而不利。又，相對於頂片30之親水劑的調配量，優選是設為0.3%～0.5%，更優選是設為0.4%～0.5%。在調配量比0.5%更多的情況下，付出的藥劑費會使得製品原價變高，且在排尿後的穿著者的體壓施加的情況下容易回滲而不利。又，在調配量比0.3%更少的情況下，水溶性的酸與構成頂片30的纖維之間的結合弱，使得複數次***就可能造成水溶性的酸容易流失，又，尿可能無法透過不織布而造成漏出。水溶性的酸與親水劑的調配比，優選是設為1：7～1：20更優選是設為1：15。若超過此範圍，則會影響不織布的親水性而不利。The formulation amount of the water-soluble acid with respect to the top sheet 30 is preferably 0.02% to 0.07%, and more preferably 0.03% to 0.05%. In the case where the blending amount is more than 0.07%, when the acid adheres to the wearer's skin, it will cause a burden on the skin, which is unfavorable. In addition, in the case where the blending amount is less than 0.02%, it is difficult and unfavorable to effectively suppress the excreta tending to the alkaline side. The amount of the hydrophilic agent blended in the top sheet 30 is preferably 0.3% to 0.5%, and more preferably 0.4% to 0.5%. In the case where the dosage is more than 0.5%, the cost of the drug will make the original price of the product higher, and it is easy to seep back when the body pressure of the wearer after urination is applied. In addition, when the blending amount is less than 0.3%, the binding between the water-soluble acid and the fibers constituting the topsheet 30 is weak, so that multiple excretion may cause the water-soluble acid to be easily lost, and the urine may not be able to Leakage through non-woven fabric. The mixing ratio of the water-soluble acid and the hydrophilic agent is preferably 1:7 to 1:20, and more preferably 1:15. If it exceeds this range, it will affect the hydrophilicity of the nonwoven fabric, which is disadvantageous.

若使水溶性的酸包含在頂片30中，則減輕對於穿著者的肌膚的負擔的效果高。頂片30，是直接接觸穿著者的肌膚(例如，屁股的皮膚)的頂片，若***造成附著在頂片30上的***物傾向鹼性側，則肌膚與***物的持續地接觸會對肌膚造成負擔。於是，使水溶性的酸包含在頂片30中，藉此能夠抑止朝向鹼性側的傾向，而能夠減輕對於穿著者的肌膚的負擔。When the water-soluble acid is included in the top sheet 30, the effect of reducing the burden on the wearer's skin is high. The top sheet 30 is a top sheet that directly contacts the wearer's skin (for example, the skin of the buttocks). If excretion caused by the excretion attached to the top sheet 30 tends to the alkaline side, the continuous contact between the skin and the excrement will Skin burden. Therefore, by including the water-soluble acid in the topsheet 30, the tendency toward the alkaline side can be suppressed, and the burden on the skin of the wearer can be reduced.

另外，在使水溶性的酸包含在頂片30中的情況下，在頂片30中包含的酸，可能會對於穿著者的肌膚造成負擔。藉由使用接近中性的酸且減少酸的添加量，能夠減輕酸造成的對於肌膚的負擔，但是在此情況下會有不能夠有效地抑止***物的朝向鹼性側的傾向的弊端。於是，為了解決這種問題，優選為將頂片30作成複數個層的構造，位於肌膚側的層不含水溶性的酸(或者，即便包含也是少量)，且位於背面側的層包含水溶性的酸及親水劑。例如，也可以將頂片30作成2層構造，位於肌膚側的層(上層)不含水溶性的酸，且位於背面側的層(下層)包含水溶性的酸及親水劑。在將頂片30作成3層以上的構造的情況下，也可以使位於最靠肌膚側的層(最上層)不含水溶性的酸，且位於比最上層更靠背面側的任一層或全部的層包含水溶性的酸及親水劑。在圖3中，例示出將頂片30作成2層構造，肌膚側的層(上層)以30U來表示，背面側的層(下層)以30D來表示。上層30U不含水溶性的酸及親水劑，下層30D包含水溶性的酸及親水劑。In addition, when the water-soluble acid is contained in the top sheet 30, the acid contained in the top sheet 30 may cause a burden on the wearer's skin. By using a near-neutral acid and reducing the amount of acid added, the burden on the skin caused by the acid can be reduced, but in this case, there is a disadvantage that the tendency of the excrement toward the alkaline side cannot be effectively suppressed. Therefore, in order to solve such a problem, it is preferable that the top sheet 30 be formed in a plurality of layers. The layer on the skin side does not contain water-soluble acid (or a small amount even if included), and the layer on the back side contains water-soluble Acid and hydrophilic agent. For example, the top sheet 30 may have a two-layer structure. The layer (upper layer) on the skin side does not contain water-soluble acids, and the layer (lower layer) on the back side contains water-soluble acids and a hydrophilic agent. When the topsheet 30 has a structure of three layers or more, the layer (uppermost layer) on the side closest to the skin may not contain water-soluble acid, and may be on any layer or all of the layers on the back side than the uppermost layer. The layer contains a water-soluble acid and a hydrophilic agent. In FIG. 3, it is exemplified that the top sheet 30 has a two-layer structure, the layer (upper layer) on the skin side is represented by 30U, and the layer (lower layer) on the back side is represented by 30D. The upper layer 30U does not contain a water-soluble acid and a hydrophilic agent, and the lower layer 30D contains a water-soluble acid and a hydrophilic agent.

另外，如上述，在上層30U不含水溶性的酸較佳，但是親水劑對於肌膚不會造成負擔，所以也可以在上層30U包含親水劑。在上層30U和下層30D的兩方包含親水劑會使得製造步驟成為容易的情況下，可以在上層30U也包含親水劑。In addition, as described above, it is preferable that the upper layer 30U does not contain a water-soluble acid, but the hydrophilic agent does not burden the skin, so the upper layer 30U may contain a hydrophilic agent. In the case where the upper layer 30U and the lower layer 30D both contain a hydrophilic agent will make the manufacturing process easier, the upper layer 30U may also contain a hydrophilic agent.

其中，在重視要防止頂片30之中的特別是接觸肌膚的部分的鹼性化，以減輕阿摩尼亞對於肌膚造成的負擔的情況下，特意地使位於頂片30的肌膚側的層包含水溶性的酸也是有效的。Among them, when it is important to prevent the alkalinization of the top sheet 30, especially the part that contacts the skin, in order to reduce the burden on the skin caused by Armonia, the layer on the skin side of the top sheet 30 is intentionally made It is also effective to include water-soluble acids.

另外，本發明這樣的特殊構造的頂片30，亦即，在上層30U不含水溶性的酸，且在下層30D包含水溶性的酸之頂片30，例如能夠藉由以下的(1)或(2)的方法來製造。 (1)例如，首先，經過原料投料、加熱、熔融、壓出之步驟來製造成為位於肌膚側的層的原料之原棉(成為原料的纖維，下同)。又，經過原料投料、加熱、熔融、壓出、冷卻後塗酸之步驟來製造成為位於背面側的層的原料之原棉。 然後，在不織布製造裝置的複數條生產線(例如，在製造2層構造的頂片的情況下，是製造肌膚側的層的生產線、及製造背面側的層的生產線的2條生產線)上，分別地供給成為位於肌膚側的層的原料之原棉、及成為位於背面側的層的原料之原棉。其後，在各生產線上實行各原棉的一次纖維分離、計量和混棉、二次纖維分離、纖維簇形成(將已二次纖維分離的原棉均勻地貯存在箱體內)、纖維網成形(藉由梳棉機來將貯存在箱體內的原棉成形為片狀)之步驟。然後，將藉由纖維網成形而製造的各片重疊並作成複數個層，藉由熱熔接處理而結合後，經過異物混入檢查、捲取之步驟來製造。 另外，上述說明所例示的是使用熱風製法來製造複數個層的不織布的方法，但是使用與不織布的熔接方法不同的製造方法也同樣可以製造。作為其他製造方法，能夠例示出水刺法、紡黏法、熱軋法、熔噴法、針刺法、點黏法等等。 又，在上述說明中，在製造成為位於背面側的層的原料之原棉之際，也可以與酸一起塗敷親水劑。與此並行地，也可以在製造成為位於肌膚側的層的原料之原棉之際，也可以在前述冷卻後的時序塗敷親水劑。 (2)例如，在利用尿布加工機製造尿布的步驟中，僅在被貼合至尿布本體前的頂片30的下層側，利用噴塗來附加酸性成分。In addition, the top sheet 30 having a special structure such as the present invention, that is, the top sheet 30 containing no water-soluble acid in the upper layer 30U and containing the water-soluble acid in the lower layer 30D can be obtained by, for example, the following (1) or ( 2) Method to manufacture. (1) For example, first, raw material cotton (a fiber used as a raw material, the same below) which is a raw material of a layer on the skin side is manufactured through the steps of raw material feeding, heating, melting, and pressing. In addition, raw material cotton which is the raw material of the layer on the back side is manufactured through the steps of raw material feeding, heating, melting, pressing, and cooling, followed by acid coating. Then, on a plurality of production lines of the nonwoven fabric manufacturing apparatus (for example, in the case of manufacturing a top sheet of a two-layer structure, two production lines for producing a layer on the skin side and two production lines for producing a layer on the back side), respectively The raw cotton which becomes the raw material of the layer located on the skin side, and the raw cotton which becomes the raw material of the layer located on the back side are supplied. After that, primary fiber separation, metering and blending, secondary fiber separation, fiber cluster formation (storage of secondary fibers that have been separated from the secondary fiber are evenly stored in the box) and fiber web forming (by borrowing) The step of forming the raw cotton stored in the box into a sheet shape by a carding machine. Then, the sheets manufactured by forming the fiber web are overlapped and formed into a plurality of layers, which are combined by a heat welding process, and then subjected to the steps of foreign matter mixing inspection and winding. In addition, the above description exemplifies a method of manufacturing a plurality of layers of nonwoven fabric using a hot air method, but it can also be produced using a manufacturing method different from the welding method of nonwoven fabric. As other manufacturing methods, a spunlace method, a spun bond method, a hot rolling method, a melt blow method, a needle punch method, a point bonding method, etc. can be exemplified. In addition, in the above description, when producing raw cotton which is a raw material of the layer on the back side, the hydrophilic agent may be applied together with the acid. In parallel with this, the hydrophilic agent may be applied at the timing after the cooling when the raw cotton that is the raw material of the layer on the skin side is manufactured. (2) For example, in the step of manufacturing a diaper using a diaper processing machine, only on the lower layer side of the topsheet 30 before being attached to the diaper body, an acidic component is added by spraying.

在中間片40中也能夠包含水溶性的酸。因為中間片40不會直接接觸穿著者的肌膚，所以藉由在此中間片40中包含水溶性的酸，能夠防止酸對於穿著者的肌膚造成負擔。又，一般來說，中間片40是蓬鬆的，所以在***物到達吸收體56時，會有殘留在中間片40的內部之***物的量比殘留在頂片30或包裝片58的內部之***物的量更多的傾向。因此，將水溶性的酸包含在中間片40中，會抑制殘留在中間片40中的***物的鹼性化，藉此能夠減輕殘留在中間片40中的***物回滲時對於肌膚的負擔。The intermediate sheet 40 can also contain a water-soluble acid. Since the intermediate sheet 40 does not directly contact the wearer's skin, by including a water-soluble acid in the intermediate sheet 40, it is possible to prevent the acid from burdening the wearer's skin. Also, in general, the intermediate sheet 40 is fluffy, so when the excrement reaches the absorber 56, there will be more excretions remaining in the intermediate sheet 40 than in the top sheet 30 or the packaging sheet 58 The amount of excrement tends to be more. Therefore, the inclusion of a water-soluble acid in the intermediate sheet 40 suppresses the alkalization of the excrement remaining in the intermediate sheet 40, thereby reducing the burden on the skin when the excrement remaining in the intermediate sheet 40 re-permeates .

在包裝片58中也能夠包含水溶性的酸。因為包裝片58不會直接接觸穿著者的肌膚，所以藉由在此包裝片58中包含水溶性的酸，能夠防止酸對於穿著者的肌膚造成負擔。又，包裝片58，因為包覆吸收體56，所以與保持***物之吸收體56接觸的機會多。因此，在包裝片58中包含的酸，對於吸收體56所保持的***物發揮作用的時間更長，所以能夠有效地抑止吸收體56所保持的***物的朝向鹼性側的傾向。另外，包裝片58，也可以在整個包裝片58中包含水溶性的酸，若考慮以減輕對於穿著者的肌膚的負擔之目的，則優選為在包裝片58之中的至少比吸收體56更靠肌膚側的部分中包含水溶性的酸。又，親水劑也同樣，優選為設在比吸收體56更靠肌膚側的部分。The packaging sheet 58 can also contain a water-soluble acid. Since the packaging sheet 58 does not directly contact the wearer's skin, the water-soluble acid contained in the packaging sheet 58 can prevent the acid from burdening the wearer's skin. In addition, since the packaging sheet 58 covers the absorber 56, there is a greater chance of contact with the absorber 56 holding fecal matter. Therefore, the acid contained in the packaging sheet 58 acts on the excrement held by the absorbent body 56 for a longer period of time, so that the tendency of the excrement held by the absorbent body 56 toward the alkaline side can be effectively suppressed. In addition, the packaging sheet 58 may contain a water-soluble acid throughout the packaging sheet 58. When considering the purpose of reducing the burden on the wearer's skin, it is preferable that at least the packaging sheet 58 is more than the absorber 56 The skin-side part contains water-soluble acids. In addition, the hydrophilic agent is also similar, and is preferably provided on the skin side of the absorber 56.

在對於穿著者的肌膚影響力高的頂片30中包含水溶性的酸是重要的。亦即，頂片30會直接接觸肌膚，所以抑止附著在此頂片30上的***物的鹼性化是有效的，從此觀點來看，至少在頂片30中包含水溶性的酸是重要的。但是，除此以外，也可以自中間片40和包裝片58之群組中選擇任一種片來包含水溶性的酸，也可以使在這些群組的全部的片材中包含水溶性的酸。從製品原價的觀點來看，優選為僅在頂片30中包含水溶性的酸；作為頂片30以外的片，特別是在中間片40中包含水溶性的酸會容易製造而在原價的觀點上有利。另一方面，從抑止鹼性化的觀點來看，優選為在越多的片材中包含水溶性的酸。It is important to include a water-soluble acid in the topsheet 30 that has a high influence on the wearer's skin. That is, the topsheet 30 directly contacts the skin, so it is effective to suppress the alkalization of the excrement attached to the topsheet 30. From this point of view, it is important that at least the topsheet 30 contains a water-soluble acid. . However, in addition to this, any one of the sheets of the intermediate sheet 40 and the packaging sheet 58 may be selected to contain a water-soluble acid, or all sheets in these groups may contain a water-soluble acid. From the viewpoint of the original price of the product, it is preferable to include the water-soluble acid only in the top sheet 30; as a sheet other than the top sheet 30, in particular, the inclusion of the water-soluble acid in the intermediate sheet 40 will be easy to manufacture and from the viewpoint of the original price Favorable. On the other hand, from the viewpoint of suppressing alkalization, it is preferable to include a water-soluble acid in more sheets.

(附加酸的範圍) 在頂片30、中間片40及包裝片58中包含水溶性的酸之平面範圍，優選是設為可預測的***物的擴散範圍。在吸收性物品是圖示的拋棄式尿布的情況下，若考慮穿著者的***口(排尿口、肛門等)的位置，則優選為至少在胯部M上附加酸。在***物的量多的情況、或進行複數次***的情況下，預期***物會擴散到廣範圍中，所以期望是優選為在整片頂片30上附加酸。即便在中間片40或包裝片58中，優選為也在與頂片30的相同位置附加酸。針對親水劑，優選為也在與酸同樣的範圍進行附加。(Scope of additional acid) The plane range of the top sheet 30, the middle sheet 40, and the packaging sheet 58 containing a water-soluble acid is preferably a predictable diffusion range of excreta. When the absorbent article is a disposable diaper as shown in the figure, it is preferable to add acid to at least the crotch portion M when considering the position of the wearer's excretory opening (urination opening, anus, etc.). When the amount of excrement is large, or when excretion is performed a plurality of times, it is expected that the excrement will spread to a wide range, so it is desirable to add acid to the entire top sheet 30. Even in the middle sheet 40 or the packaging sheet 58, it is preferable to add acid at the same position as the top sheet 30. The hydrophilic agent is preferably added in the same range as the acid.

(實驗例) 準備以下的2種實驗材料。 (1)材料1：單位面積的重量是20gsm的熱風不織布(尿布的頂片)，是肌膚面為2.0dtex且背面為3.3dtex之2層構造。作為不織布的原材料，使用聚乙烯和聚對苯二甲酸乙二酯的複合纖維。在此熱風不織布中，包含非離子性的界面活性劑來作為親水劑。親水劑的含量相對於不織布重量為0.4%。 (2)材料2：單位面積的重量是20gsm的熱風不織布(尿布的頂片)，是2.2dtex的1層構造。作為不織布的原材料，使用聚乙烯和聚對苯二甲酸乙二酯的複合纖維。在此熱風不織布中，分別地包含非離子性的界面活性劑來作為親水劑、及檸檬酸來作為水溶性的酸。親水劑的含量相對於不織布重量為0.4%，水溶性的酸的含量相對於不織布重量為0.05%。(Experimental example) Prepare the following 2 experimental materials. (1) Material 1: Hot air nonwoven fabric (diaper topsheet) with a weight per unit area of 20 gsm, and has a two-layer structure with a skin surface of 2.0 dtex and a back surface of 3.3 dtex. As the raw material of the non-woven fabric, a composite fiber of polyethylene and polyethylene terephthalate is used. This hot-air nonwoven fabric contains a nonionic surfactant as a hydrophilic agent. The content of the hydrophilic agent is 0.4% relative to the weight of the non-woven fabric. (2) Material 2: Hot air non-woven fabric (diaper topsheet) with a weight per unit area of 20 gsm and a single-layer structure of 2.2 dtex. As the raw material of the non-woven fabric, a composite fiber of polyethylene and polyethylene terephthalate is used. This hot-air nonwoven fabric contains a nonionic surfactant as a hydrophilic agent and citric acid as a water-soluble acid, respectively. The content of the hydrophilic agent is 0.4% relative to the weight of the non-woven fabric, and the content of the water-soluble acid is 0.05% relative to the weight of the non-woven fabric.

實驗在22.1℃的實驗室中實行，首先，重疊10片的濾紙(250mm×250mm的正方形的ADVENTEC公司的FILTER PAPER)，在其上放置前述材料1。然後，利用馬克筆(marker)在前述材料1上描繪直徑20mm的圓，並將該圓的內部設為測定處。更詳細來說，在前述材料1上描繪6處的前述圓，並將各個圓的內部設為測定處A～F。The experiment was carried out in a laboratory at 22.1°C. First, 10 pieces of filter paper (250 mm×250 mm square ADVENTEC FILTER PAPER) were stacked, and the aforementioned material 1 was placed thereon. Then, a circle with a diameter of 20 mm was drawn on the aforementioned material 1 with a marker, and the inside of the circle was used as a measurement point. More specifically, six circles of the material are drawn on the material 1, and the inside of each circle is defined as the measurement points A to F.

接著，在與前述同樣的10片的濾紙上放置前述材料2。然後，利用馬克筆在前述材料2上描繪直徑20mm的圓，並將該圓的內部設為測定處。更詳細來說，在前述材料2上描繪6處的前述圓，並將各個圓的內部設為測定處G～L。Next, the aforementioned material 2 was placed on the same 10 pieces of filter paper as described above. Then, a circle with a diameter of 20 mm was drawn on the aforementioned material 2 with a marker pen, and the inside of the circle was used as a measurement point. In more detail, the said circle|circle of 6 places is drawn on the said material 2, and the inside of each circle is set to the measurement position G-L.

接著，在材料1的測定處A～C中，分別地滴下100μL的人工尿。另外，前述人工尿的成分是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、以及97.09wt%的離子交換水。然後1分鐘後，利用接觸型pH計(HORIBA公司製造，型號#6261-10C)來分別地測量材料1的測定處A～C的表面的pH(第一次的測量)。Next, 100 μL of artificial urine was dripped at the measurement points A to C of the material 1 respectively. In addition, the components of the aforementioned artificial urine are 2% by weight of urea, 0.8% by weight of sodium chloride, 0.03% by weight of calcium chloride dihydrate, 0.08% by weight of magnesium sulfate heptahydrate, and 97.09% by weight of ion-exchanged water. Then, 1 minute later, the pH of the surface of the measurement sites A to C of the material 1 was measured using a contact-type pH meter (manufactured by HORIBA, model #6261-10C) (the first measurement).

其後，在材料1的測定處A～C中，分別地滴下100μL的人工尿，1分鐘後，利用前述接觸型pH計來分別地測量材料1的測定處A～C的表面的pH(第二次的測量)。進一步，在材料1的測定處A～C中，分別地滴下100μL的人工尿，1分鐘後，利用前述接觸型pH計來分別地測量材料1的測定處A～C的表面的pH(第三次的測量)。Thereafter, 100 μL of artificial urine was dripped separately at the measurement points A to C of the material 1, and after 1 minute, the pH of the surface of the measurement points A to C of the material 1 was measured using the aforementioned contact-type pH meter (the first Secondary measurement). Furthermore, 100 μL of artificial urine was dripped separately at the measurement points A to C of the material 1, and after 1 minute, the pH of the surface of the measurement points A to C of the material 1 was measured separately using the aforementioned contact-type pH meter (third Measurement).

接著，針對材料1的測定處D～F，也利用與前述第一次的測量～第三次的測量同樣的條件實行測量。另外，針對測定處D～F，每1次的人工尿的滴下量不是100μL，而是設為500μL。Next, the measurement points D to F of the material 1 are also measured under the same conditions as the aforementioned first measurement to third measurement. In addition, for the measurement points D to F, the amount of artificial urine dropped per time was not 100 μL, but was set to 500 μL.

接著，針對材料2的測定處G～I，也利用與前述第一次的測量～第三次的測量同樣的條件實行測量。另外，針對測定處G～I，每1次的人工尿的滴下量設為100μL。Next, the measurement points G to I of the material 2 are also measured under the same conditions as the aforementioned first measurement to third measurement. In addition, for the measurement points G to I, the dropping amount of artificial urine per one time was set to 100 μL.

進一步，針對材料2的測定處J～L，也利用與前述第一次的測量～第三次的測量同樣的條件實行測量。另外，針對測定處J～L，每1次的人工尿的滴下量設為500μL。Furthermore, the measurement locations J to L of the material 2 are also measured under the same conditions as the aforementioned first measurement to third measurement. In addition, for the measurement points J to L, the amount of artificial urine dropped per time was set to 500 μL.

試驗結果表示在下述表1、圖6、圖7中。 [表1]

Figure 02_image001
The test results are shown in Table 1, Figure 6, and Figure 7 below. [Table 1]
Figure 02_image001

(考察) 可知相較於沒有調配檸檬酸之測定處A～F，調配有檸檬酸之測定處G～L具有pH值變低的傾向。又，可知在將親水劑與檸檬酸一起調配的測定處G～L中，即便在滴下3次的人工尿的情況下，鹼性化也幾乎沒有進展。認為是藉由親水劑使得檸檬酸被牢固地保持在熱風不織布的纖維上，即便複數次排尿也不會造成流失。(Investigation) It can be seen that the measurement points G to L prepared with citric acid tend to have a lower pH value than the measurement points A to F without citric acid. In addition, it can be seen that in the measurement points G to L where the hydrophilic agent and the citric acid are formulated, even when artificial urine is dropped three times, the alkalization hardly progresses. It is believed that the citric acid is firmly held on the fibers of the hot air non-woven fabric by the hydrophilic agent, and even if urination is performed multiple times, it will not cause loss.

(與先前技術比較之本發明的效果) 依據關於本發明之吸收性物品，即便在穿著者進行複述次***後的情況下，在頂片30中仍容易殘留有酸，所以能夠維持酸帶來的鹼性化抑止效果。又，吸收性物品的穿著者，在1次也沒有***的狀態下，在頂片30中包含的水溶性的酸不會持續地接觸穿著者的肌膚(例如，將酸調配在頂片30的下層中)，藉此能夠減輕對於肌膚的負擔。進一步，將中間片40、包裝片58的至少一種設為較大的單位面積的重量，藉此即便在施加體壓的部位也能夠降低***物和酸回滲而接觸穿著者的肌膚的可能性。(Effect of the present invention compared with the prior art) According to the absorbent article of the present invention, even after the wearer repeats the secondary excretion, acid is likely to remain in the topsheet 30, so that the alkalinization suppressing effect by acid can be maintained. In addition, the wearer of the absorbent article does not excrete once, and the water-soluble acid contained in the topsheet 30 does not continuously contact the wearer's skin (for example, the acid is added to the topsheet 30). In the lower layer), this can reduce the burden on the skin. Furthermore, by setting at least one of the intermediate sheet 40 and the packaging sheet 58 to have a large weight per unit area, it is possible to reduce the possibility of fecal matter and acid repermeating and contacting the wearer's skin even at the site where body pressure is applied .

由於不需要如前述專利文獻1般在頂片30上設置凸部，所以吸收性物品的設計的自由度高。又，由於不需要如前述專利文獻1般特別地限定調配酸的部分，所以製造也容易。又，由於不是使用如前述專利文獻2般的在水中不容易溶解的富馬酸，而是使用水溶性的酸，所以容易與親水劑一起塗敷在片上而製造容易。又，沒有使用如前述專利文獻3般的對於皮膚的刺激性比檸檬酸更強的蘋果酸，這點是有利的。Since it is not necessary to provide a convex portion on the top sheet 30 as in the aforementioned Patent Document 1, the degree of freedom of design of the absorbent article is high. In addition, since it is not necessary to specifically limit the portion where the acid is formulated as in the aforementioned Patent Document 1, the manufacturing is also easy. Also, instead of using fumaric acid, which is not easily dissolved in water, as in the aforementioned Patent Document 2, but using a water-soluble acid, it is easy to apply the hydrophilic agent to the sheet and manufacture is easy. In addition, it is advantageous that malic acid, which is more irritating to the skin than citric acid, as in the aforementioned Patent Document 3, is not used.

(其他) 吸收體56的內部的***物也有回滲的可能性。若考慮這點，則防止吸收體56的內部存在的***物的鹼性化也是有效的。因此，在吸收體56本身(例如，吸收體的超級吸收聚合物，Superabsorbent polymers)中包含水溶性的酸，對於肌膚的負擔的減輕也是有效的。(other) There is also a possibility that the excrement inside the absorber 56 may re-infiltrate. Taking this into consideration, it is also effective to prevent the excretion present inside the absorber 56 from becoming alkaline. Therefore, the inclusion of water-soluble acid in the absorber 56 itself (for example, the superabsorbent polymers of the absorber) is also effective for reducing the burden on the skin.

(酸) 在以上說明中，以水溶性的酸為例來進行說明，但是在頂片30中可包含的酸不限定於水溶性的酸。亦即，若不考慮與親水劑之親和性的話，也可以在頂片30中包含富馬酸等難溶性的酸。(acid) In the above description, a water-soluble acid is taken as an example, but the acid that can be contained in the top sheet 30 is not limited to a water-soluble acid. That is, if the affinity with the hydrophilic agent is not considered, the topsheet 30 may contain a poorly soluble acid such as fumaric acid.

(***物) 作為在本發明中的***物，能夠例示出尿、排便(特別是軟便)、經血等。特別是，對於***物之中的除了固體形狀的糞便以外的***液的抑止鹼性化是有效的。在尿中，尿素酶等分解酵素將尿中包含的尿素水解成阿摩尼亞而使得***物鹼性化，是藉由水溶性的酸來抑制。在軟便中，尿素酶等分解酵素將軟便中包含的尿素水解成阿摩尼亞而使得***物鹼性化，是藉由水溶性的酸來抑制。(Excrement) As the excrement in the present invention, urine, defecation (especially soft stool), menstrual blood, etc. can be exemplified. In particular, it is effective for suppressing alkalization of excretion other than solid-shaped feces among excreta. In urine, urease and other decomposing enzymes hydrolyze the urea contained in the urine into Armonia to make excreta alkaline, which is suppressed by water-soluble acids. In soft stools, urease and other decomposing enzymes hydrolyze the urea contained in the soft stool into Armonia and make the excretion alkaline, which is suppressed by water-soluble acids.

>對說明書中的用語的說明> 只要在說明書中無特別地記載，則說明書中的以下用語具有如下含義。>Explanation of terms in the manual> As long as there is nothing specifically described in the description, the following terms in the description have the following meanings.

・“前後方向”是指在圖中的符號LD表示的方向(縱方向)，“寬度方向”是指在圖中的符號WD表示的方向(左右方向)，前後方向與寬度方向正交。・The “front-back direction” refers to the direction (longitudinal direction) indicated by the symbol LD in the figure, and the “width direction” refers to the direction (left-right direction) indicated by the symbol WD in the figure, and the front-rear direction is orthogonal to the width direction.

・“展開狀態”是指不收縮或不鬆弛地平坦展開的狀態。・"Expanded state" refers to a state of flat expansion without contraction 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 set to 100%. For example, an elongation of 200% means the same meaning as an elongation of 2 times.

・“單位面積的重量”如下述這樣測定。將樣品或者試驗片預備烘乾後放置到標準狀態（試驗場所的溫度為23±1℃、相對濕度為50±2%）的試驗室或者裝置內，使之為變成恒量的狀態。預備烘乾是指使樣品或者試驗片在溫度為100℃的環境中成為恒量。另外，關於法定水分率為0.0%的纖維，也可以不進行預備烘乾。使用試樣選取用的模板（100mm×100mm），從變成恒量的狀態下的試驗片切取100mm×100mm的尺寸的試樣。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重量。・"Weight per unit area" is measured as follows. The sample or test piece is prepared for drying and placed in a standard state (temperature of the test site is 23 ± 1 ℃, relative humidity is 50 ± 2%) in the test room or device to make it into a constant state. Pre-drying refers to making the sample or test piece constant in an environment with a temperature of 100°C. In addition, for fibers with a legal moisture content of 0.0%, preliminary drying is not required. Using a template for sample selection (100 mm×100 mm), a sample with a size of 100 mm×100 mm is cut from the test piece in a state where it becomes constant. Measure the weight of the sample and multiply it by 100 times to calculate the weight per square meter as the weight per unit area.

・“厚度”採用自動厚度測定器（KES-G5便攜壓縮測量程式）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 measurement program) under a load of 0.098N/cm 2 and a pressurized area of 2cm 2 .

・“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" is measured in accordance with JIS K7223-1996 "Test method for water absorption 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”。・"Water absorption speed" is "time to end point" when JIS K 7224-1996 "Test method for water absorption speed of superabsorbent resin" is performed using 2 g of superabsorbent polymer and 50 g of physiological saline.

・在沒有關於試驗或測定中的環境條件的所述之情況下，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）的試驗室或者裝置內進行。・In the absence of the environmental conditions in the test or measurement, the test or measurement is in a test room or device in a standard state (temperature of 23±1℃ and relative humidity of 50±2% at the test site) Carried out within.

・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狀態下的尺寸。・The dimensions of each part refer to the dimensions in the unfolded state, not in the natural long state, unless otherwise specified.

[產業上的可利用性] 本發明除了能夠用於上述例子那樣的黏貼型拋棄式尿布之外，也能夠用於短褲型拋棄式、襯墊型拋棄式尿布、尿布、生理用衛生棉等吸收性物品。特別優選為適用於前述各拋棄式尿布。[Industry availability] The present invention can be applied to absorbent articles such as pants-type disposable pads, pad-type disposable diapers, diapers, and sanitary napkins, in addition to the adhesive disposable diapers as in the above examples. It is particularly preferable to apply to each of the aforementioned disposable diapers.

11‧‧‧不透液性片 12‧‧‧外裝不織布 13‧‧‧連結帶 13A‧‧‧連結部 13B‧‧‧延伸部 13C‧‧‧基端部 20‧‧‧靶片 30‧‧‧頂片 30U‧‧‧上層 30D‧‧‧下層 40‧‧‧中間片 50‧‧‧吸收部件 56‧‧‧吸收體 58‧‧‧包裝片 60‧‧‧立起皺褶 62‧‧‧皺摺片 63‧‧‧皺摺彈性構件 64‧‧‧側彈性構件 70‧‧‧金屬製的治具 71‧‧‧孔 B‧‧‧背側部分 F‧‧‧腹側部分 LD‧‧‧前後方向 WD‧‧‧寬度方向 M‧‧‧胯部 MX‧‧‧胯部的最小寬度 MY‧‧‧胯部的前後方向的尺寸 EF‧‧‧端翼部 SF‧‧‧側翼部 WP‧‧‧翼部分 L‧‧‧尿布的全長 X‧‧‧除了連結帶以外之尿布的全寬 6-6、7-7、8-8、9-9‧‧‧剖面線11‧‧‧Liquid-impermeable sheet 12‧‧‧Non-woven fabric 13‧‧‧Linking tape 13A‧‧‧Linking part 13B‧‧‧Extending part 13C‧‧‧Base end part 20‧‧‧Target 30‧‧ ‧Top sheet 30U‧‧‧Upper layer 30D‧‧‧Lower layer 40‧‧‧Intermediate sheet 50‧‧‧Absorbent part 56‧‧‧Absorbent body 58‧‧‧Packing sheet 60‧‧‧Rise wrinkle 62‧‧‧ Folding piece 63‧‧‧Wrinkled elastic member 64‧‧‧ Side elastic member 70‧‧‧Metal jig 71‧‧‧ Hole B‧‧‧Back part F‧‧‧Ventral part LD‧‧‧ size EF‧‧‧ end portions flanking wings SF‧‧‧ WP‧ front-rear direction widthwise direction WD‧‧‧ M‧‧‧ crotch M X ‧‧‧ minimum crotch width of the crotch M Y ‧‧‧ ‧‧Front part L‧‧‧The full length of the diaper X‧‧‧The full width of the diaper except the connecting belt 6-6, 7-7, 8-8, 9-9 ‧‧‧

圖1是示出尿布展開狀態下的黏貼型拋棄式尿布的內表面的俯視圖。 圖2是示出尿布展開狀態下的黏貼型拋棄式尿布的外表面的俯視圖。 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是示出實驗結果的圖表，示出進行3次的將1次100μL的人工尿滴至測定處A～C、G～I時的pH的變化。 圖7是示出實驗結果的圖表，示出進行3次的將1次500μL的人工尿滴至測定處D～F、J～L時的pH的變化。 圖8（a）是金屬製治具的俯視圖，圖8（b）是金屬製治具的立體圖。FIG. 1 is a plan view showing the inner surface of the stick-on disposable diaper in the unfolded state of the diaper. Fig. 2 is a plan view showing the outer surface of the stick-on disposable diaper in the unfolded state of the diaper. Fig. 3 is a cross-sectional view taken along line 6-6 in Fig. 1. 4 is a cross-sectional view taken along line 7-7 in FIG. 5(a) is a cross-sectional view taken along line 8-8 in FIG. 1, and FIG. 5(b) is a cross-sectional view taken along line 9-9 in FIG. FIG. 6 is a graph showing the results of the experiment, showing changes in pH when 100 μL of artificial urine was dripped once to the measurement points A to C, and G to I three times. FIG. 7 is a graph showing the results of the experiment, showing the change in pH when 500 μL of artificial urine was dropped to the measurement points D to F and J to L three times. FIG. 8(a) is a plan view of a metal fixture, and FIG. 8(b) is a perspective view of a metal fixture.

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, number) no

國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記) 無Overseas hosting information (please note in order of hosting country, institution, date, number) no

11‧‧‧不透液性片 11‧‧‧ liquid-impermeable tablets

12‧‧‧外裝不織布 12‧‧‧Outerwear Nonwoven

30‧‧‧頂片 30‧‧‧Top film

30U‧‧‧上層 30U‧‧‧Upper

30D‧‧‧下層 30D‧‧‧Lower

40‧‧‧中間片 40‧‧‧intermediate

50‧‧‧吸收部件 50‧‧‧absorbent parts

56‧‧‧吸收體 56‧‧‧Absorber

58‧‧‧包裝片 58‧‧‧Packing tablets

60‧‧‧立起皺褶 60‧‧‧Erect wrinkles

62‧‧‧皺摺片 62‧‧‧Crumpled tablets

63‧‧‧皺摺彈性構件 63‧‧‧ wrinkled elastic member

64‧‧‧側彈性構件 64‧‧‧side elastic member

Claims (12)

一種吸收性物品，具有設置在肌膚側之頂片、及設置在前述頂片的背面側之吸收體，該吸收性物品的特徵在於： 前述頂片由複數個層來構成； 前述複數個層之中，位於肌膚側的層不含酸，且位於背面側的層包含酸。An absorbent article having a top sheet provided on the skin side and an absorber provided on the back side of the top sheet. The absorbent article is characterized by: The aforementioned top sheet is composed of a plurality of layers; Among the plurality of layers, the layer on the skin side contains no acid, and the layer on the back side contains acid. 如請求項1所述之吸收性物品，其中，在前述頂片中包含的酸是水溶性的酸； 前述頂片，包含前述水溶性的酸以及親水劑。The absorbent article according to claim 1, wherein the acid contained in the top sheet is a water-soluble acid; The top sheet contains the water-soluble acid and the hydrophilic agent. 如請求項2所述之吸收性物品，其中，前述親水劑，包含：聚甘油脂肪酸酯、聚醚-聚酯嵌段共聚物、聚醚改質矽氧、或環氧乙烷加成多元醇之脂肪酸酯、或是這些的組合。The absorbent article according to claim 2, wherein the hydrophilic agent includes polyglycerin fatty acid ester, polyether-polyester block copolymer, polyether modified silicone, or polyoxyethylene addition Fatty acid ester of alcohol, or a combination of these. 如請求項2或3所述之吸收性物品，其中，包含前述水溶性的酸和前述親水劑之頂片，在人工尿的滴下試驗中，第一次的測量結果是10點、第二次的測量結果是10點且第三次的測量結果是9點以上。The absorbent article according to claim 2 or 3, wherein the topsheet containing the water-soluble acid and the hydrophilic agent, in the artificial urine dropping test, the first measurement result is 10 points, the second The measurement result is 10 points and the third measurement result is more than 9 points. 如請求項1至4中任一項所述之吸收性物品，其中，在前述頂片與前述吸收體之間設置有中間片； 前述中間片，包含水溶性的酸以及親水劑。The absorbent article according to any one of claims 1 to 4, wherein an intermediate sheet is provided between the top sheet and the absorbent body; The aforementioned intermediate sheet contains a water-soluble acid and a hydrophilic agent. 如請求項1至5中任一項所述之吸收性物品，其中，設置有包覆前述吸收體之包裝片； 前述包裝片，包含水溶性的酸以及親水劑。The absorbent article according to any one of claims 1 to 5, wherein a packaging sheet covering the aforementioned absorber is provided; The aforementioned packaging tablet contains a water-soluble acid and a hydrophilic agent. 如請求項1至6中任一項所述之吸收性物品，其中，前述頂片的纖維直徑為4.0dtex以上。The absorbent article according to any one of claims 1 to 6, wherein the fiber diameter of the top sheet is 4.0 dtex or more. 如請求項1至6中任一項所述之吸收性物品，其中，前述頂片的前述複數個層之中，位於肌膚側的層的纖維直徑，比位於背面側的層的纖維直徑更小。The absorbent article according to any one of claims 1 to 6, wherein in the plurality of layers of the top sheet, the fiber diameter of the layer on the skin side is smaller than the fiber diameter of the layer on the back side . 如請求項8所述之吸收性物品，其中，前述頂片的前述複數個層之中，位於前述肌膚側的層的纖維直徑為2.5dtex以下，位於前述背面側的層的纖維直徑為4.0dtex以上。The absorbent article according to claim 8, wherein, among the plurality of layers of the top sheet, the fiber diameter of the layer on the skin side is 2.5 dtex or less, and the fiber diameter of the layer on the back side is 4.0 dtex the above. 如請求項1至9中任一項所述之吸收性物品，其中，在前述頂片與前述吸收體之間設置有中間片； 前述中間片的單位面積的重量為20gsm以上。The absorbent article according to any one of claims 1 to 9, wherein an intermediate sheet is provided between the top sheet and the absorbent body; The weight per unit area of the intermediate sheet is 20 gsm or more. 如請求項1至10中任一項所述之吸收性物品，其中，設置有包覆前述吸收體之包裝片； 前述包裝片的單位面積的重量為20gsm以上。The absorbent article according to any one of claims 1 to 10, wherein a packaging sheet covering the aforementioned absorber is provided; The weight per unit area of the packaging sheet is 20 gsm or more. 如請求項1至11中任一項所述之吸收性物品，其中，前述酸是檸檬酸。The absorbent article according to any one of claims 1 to 11, wherein the acid is citric acid.
TW108130991A 2018-08-30 2019-08-29 Absorbent article TW202009018A (en)

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US6459014B1 (en) 1999-11-15 2002-10-01 Paragon Trade Brands, Inc. Absorbent article which maintains prolonged natural skin pH
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