JP4020902B2 - Method for manufacturing absorbent article - Google Patents
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- JP4020902B2 JP4020902B2 JP2004275022A JP2004275022A JP4020902B2 JP 4020902 B2 JP4020902 B2 JP 4020902B2 JP 2004275022 A JP2004275022 A JP 2004275022A JP 2004275022 A JP2004275022 A JP 2004275022A JP 4020902 B2 JP4020902 B2 JP 4020902B2
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Description
本発明は、吸収性物品の製造方法及び吸収性物品に関し、特に基材シートに弾性部材が伸長状態で配設された複合シート部材を他のシート部材とヒートシールする工程を含んで形成される吸収性物品の製造方法、及び基材シートに弾性部材が伸長状態で配設された複合シート部材を他のシート部材とヒートシールしたヒートシール領域を備える吸収性物品に関する。 The present invention relates to a method for manufacturing an absorbent article and an absorbent article, and particularly includes a step of heat-sealing a composite sheet member in which an elastic member is disposed in a stretched state on a base sheet with another sheet member. The present invention relates to a method for manufacturing an absorbent article, and an absorbent article including a heat seal region in which a composite sheet member in which an elastic member is disposed in an expanded state on a base sheet is heat-sealed with another sheet member.
例えばパンツ型おむつ、使い捨ておむつ、ナプキン等の吸収性物品は、液透過性の表面シートと、液不透過性の裏面シートと、液保持性の吸収体とを備える縦長の吸収性本体を含むものであり、身体からの排出物等を効果的に吸収すると共に、吸収した排出物を漏出させることなく強固に保持するための工夫が種々なされている他、これらの吸収性物品を適度な装着力で身体に装着させるための工夫が種々なされている。 For example, absorbent articles such as pants-type diapers, disposable diapers, napkins, and the like include a vertically long absorbent main body including a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent body. In addition to effectively absorbing the discharge from the body and various measures to hold the absorbed discharge firmly without leaking, these absorbent articles have a suitable wearing power Various devices have been made for attaching to the body.
また、吸収性物品を適度な装着力で身体に装着させるために、例えばパンツ型おむつや使い捨ておむつでは、吸収性本体を覆うシート状の外装材として、基材シートに弾性部材を伸長状態で配設した複合シート部材を使用し、ウエスト開口部弾性部材、胴周囲部弾性部材、レッグ弾性部弾性部材等を構成するこれらの弾性部材によって、ウェストギャザー、胴回りギャザー、レッグギャザー等を形成したものが知られている。さらに、吸収性本体と重ねて配置される部分における複合シート部材の弾性部材を分断し、当該吸収性本体と重なる部分において実質的に弾性部材の弾性収縮性が発現されないようにした技術も開示されている（例えば、特許文献１、特許文献２参照）。 In addition, in order to attach the absorbent article to the body with an appropriate wearing force, for example, in a pant-type diaper or a disposable diaper, an elastic member is arranged on the base sheet in a stretched state as a sheet-like exterior material covering the absorbent main body. What formed the waist gathers, waist circumference gathers, leg gathers, etc. by these elastic members which used the provided composite sheet member and constituted the waist opening part elastic member, the waist circumference part elastic member, the leg elastic part elastic member, etc. Are known. Furthermore, a technique is disclosed in which the elastic member of the composite sheet member in a portion arranged to overlap with the absorbent main body is divided so that the elastic shrinkage of the elastic member is not substantially exhibited in the portion overlapping with the absorbent main body. (For example, refer to Patent Document 1 and Patent Document 2).
さらに、例えばパンツ型おむつや使い捨ておむつでは、外装材に吸収性本体が取り付けられた後に、背側部と腹側部とを重ね合わせるように二つ折りにすると共に、背側部の両側縁部と腹側部の両側縁部を接合することによってパンツ型に形成されることになる。ここで、これらの両側縁部の接合方法としては、装着時に剥がれることがなく、脱衣時には***物の身体への付着を防止するために引き剥がして使用する場合もあることから、適正な接合強度が得られる接合方法として、例えばポリエステルやポリエチレン等の複合繊維から構成される基材シートを溶融接着する、ヒートシールによる接合方法が一般的に提案されている。
そして、例えばパンツ型おむつや使い捨ておむつのサイドシール部の接合をヒートシールによって行う場合、当該サイドシール部のヒートシール領域を横切るようにして、ウェスト開口部弾性部材、レッグ開口部弾性部材、胴周囲部弾性部材等の弾性部材が伸長状態で延設していると、パンツ型おむつの製造工程における連続搬送時に伸長状態に保持されていた弾性部材が、例えばサイドシール部において隣接する吸収性物品と切り離されて個々の吸収性物品に分割される際に、伸長状態が解除されて当該ヒートシール領域においてこれの幅を狭めるように収縮することとなり、サイドシール部の外観を損なうと共に、柔らかい風合いを損なって硬い肌触りをもたらすことになる。 And, for example, when joining the side seal part of a pants-type diaper or disposable diaper by heat sealing, the waist opening elastic member, leg opening elastic member, waist circumference so as to cross the heat seal region of the side seal part When an elastic member such as a part elastic member extends in an extended state, the elastic member held in an extended state during continuous conveyance in the manufacturing process of the pant-type diaper is, for example, an absorbent article adjacent to the side seal portion When separated and divided into individual absorbent articles, the stretched state is released and the heat seal area shrinks to narrow the width of the heat seal area. It will damage and bring a hard touch.
本発明は、弾性部材が伸長状態で基材シートに配設された複合シート部材が他のシート部材とヒートシールされるヒートシール領域において、弾性部材が収縮するのを効果的に回避して、外観や風合いに優れたシール部を得ることのできる吸収性物品の製造方法及び吸収性物品を提供することを目的とする。 The present invention effectively avoids the elastic member from contracting in the heat sealing region where the composite sheet member disposed on the base sheet in the stretched state is heat-sealed with other sheet members, It aims at providing the manufacturing method of an absorbent article which can obtain the seal | sticker part excellent in the external appearance and the texture, and an absorbent article.
本発明は、基材シートに弾性部材が伸長状態で配設された複合シート部材を他のシート部材とヒートシールする工程を含む吸収性物品の製造方法であって、前記ヒートシールする工程は、ヒートシール領域における前記複合シート部材に配設された弾性部材の少なくとも一部を分断することにより収縮機能が発現されないようにした後に、当該ヒートシール領域のヒートシールを行う吸収性物品の製造方法を提供することにより、上記目的を達成したものである。 The present invention is a method of manufacturing an absorbent article including a step of heat-sealing a composite sheet member in which an elastic member is disposed in an expanded state on a base sheet with another sheet member, and the step of heat-sealing includes: A method for manufacturing an absorbent article that performs heat sealing in the heat sealing region after the shrinkage function is not expressed by dividing at least a part of the elastic member disposed in the composite sheet member in the heat sealing region. By providing this, the above object is achieved.
また、本発明は、基材シートに弾性部材が伸長状態で配設された複合シート部材を他のシート部材とヒートシールしたヒートシール領域を備える吸収性物品であって、前記ヒートシール領域における前記複合シート部材に配設された弾性部材の少なくとも一部が分断されて収縮機能が発現されないようなっている吸収性物品を提供することにより、上記目的を達成したものである。 Further, the present invention is an absorbent article comprising a heat seal region in which a composite sheet member in which an elastic member is disposed in a stretched state on a base sheet is heat-sealed with another sheet member, The above object is achieved by providing an absorbent article in which at least a part of the elastic member disposed in the composite sheet member is divided so that the contraction function is not exhibited.
本発明の吸収性物品の製造方法及び吸収性物品によれば、弾性部材が伸長状態で基材シートに配設された複合シート部材が他のシート部材とヒートシールされるヒートシール領域において、弾性部材が収縮するのを効果的に回避して、外観や風合いに優れたシール部を得ることができる。 According to the method for manufacturing an absorbent article and the absorbent article of the present invention, in a heat seal region where the composite sheet member disposed on the base sheet in a stretched state is heat-sealed with another sheet member, the elastic member is elastic. It is possible to effectively avoid the contraction of the member, and to obtain a seal portion excellent in appearance and texture.
本発明の好ましい一実施形態に係る吸収性物品の製造方法は、一例として、図１及び図２に示すようなパンツ型おむつ１０を製造する際に採用されたものである。すなわち、吸収性物品であるパンツ型おむつ１０は、例えば後述する製造工程において、基材シート１１に弾性部材１２ａ，１２ｂ，１２ｃが伸長状態で配設された複合シート部材１３を切断して得られた外装材１４と、外装材１４の内側に取り付けられた、液透過性の表面シート１５、液不透過性の裏面シート（図示せず）、及びこれらのシートの間に介在する液保持性の吸収体１６からなる縦長の吸収性本体１７とによって構成されるものである。そして、本実施形態のパンツ型おむつ１０は、吸収性本体１７と共に外装材１４を、腹側部Ａと背側部Ｂとを重ね合わせるように二つ折りにすると共に、サイドシール部１８をシールすることによってパンツ型に形成されることになる。 The manufacturing method of the absorbent article which concerns on preferable one Embodiment of this invention is employ | adopted when manufacturing the underpants type diaper 10 as shown in FIG.1 and FIG.2 as an example. That is, the pants-type diaper 10 that is an absorbent article is obtained by cutting the composite sheet member 13 in which the elastic members 12a, 12b, and 12c are disposed in the stretched state on the base sheet 11 in a manufacturing process that will be described later, for example. The exterior material 14, the liquid-permeable top sheet 15, the liquid-impermeable back sheet (not shown) attached to the inside of the exterior material 14, and the liquid retaining property interposed between these sheets A vertically long absorbent main body 17 composed of the absorber 16 is constituted. And the underpants type diaper 10 of this embodiment folds the exterior material 14 together with the absorptive main body 17 so as to overlap the abdominal part A and the back part B, and seals the side seal part 18. As a result, it is formed into a pants shape.
また、上述の構成を有する本実施形態のパンツ型おむつ１０は、例えば図３に示す製造工程に従って、従来のパンツ型おむつと略同様にして製造されることになる。すなわち、例えば原反ロール１９ａから連続的に供給される外層材である帯状の外層不織布を基材シート１１として、ウェストギャザーを形成するウエスト開口部弾性部材１２ａ、レッグギャザーを形成するレッグ開口部弾性部材１２ｂ、及び胴回りギャザーを形成する胴周囲部弾性部材１２ｃを、所定の伸長率に伸長させた状態で各々複数本配設する。このとき、ウエスト開口部弾性部材１２ａと胴周囲部弾性部材１２ｃは接着剤塗工機（図示略）を介してホットメルト型接着剤を連続的あるいは間欠的に塗工し、レッグ開口部弾性部材１２ｂは基材シート１１の流れ方向とは直交して往復運動する爪（図示略）を介して所定の脚周りパターンを形成して配設される。また各弾性部材１２ａ，１２ｂ，１２ｃが配設された基材シート１１を覆うようにして、例えば原反ロール１９ｂから連続的に供給される弾性部材固定シートである帯状のレッグカバー不織布を補助基材シート２１として、接着剤塗工機２０を介して所定幅にホットメルト型接着剤を連続的に塗工しつつ配設する。 Moreover, the underpants type diaper 10 of this embodiment which has the above-mentioned structure is manufactured in substantially the same manner as a conventional underpants type diaper, for example, according to the manufacturing process shown in FIG. That is, for example, a belt-like outer layer nonwoven fabric, which is an outer layer material continuously supplied from the raw fabric roll 19a, is used as the base sheet 11, and a waist opening elastic member 12a that forms a waist gather, and a leg opening elasticity that forms a leg gather. A plurality of members 12b and a waist circumference elastic member 12c that forms a waistline gather are provided in a state of being stretched at a predetermined stretch rate. At this time, the waist opening elastic member 12a and the waist circumference elastic member 12c are continuously or intermittently applied with a hot melt adhesive via an adhesive coating machine (not shown), and the leg opening elastic member 12b is arranged by forming a predetermined leg pattern through a claw (not shown) that reciprocates perpendicular to the flow direction of the base sheet 11. Further, for example, a belt-shaped leg cover non-woven fabric which is an elastic member fixing sheet continuously supplied from the raw fabric roll 19b so as to cover the base sheet 11 on which the respective elastic members 12a, 12b, 12c are disposed is an auxiliary base. As the material sheet 21, a hot melt adhesive is continuously applied to a predetermined width via the adhesive coating machine 20.
しかる後に、一対のニップロール２２ａ，２２ａの間に、ウエスト開口部弾性部材１２ａ、レッグ開口部弾性部材１２ｂ、及び胴周囲部弾性部材１２ｃを伸長状態で挟み込むようにしつつ重ね合わせた基材シート１１と補助基材シート２１と送り込んで加圧することにより、基材シート１１，２１に弾性部材１２ａ，１２ｂ，１２ｃが伸長状態で取り付けられた複合シート部材１３が形成される。また、形成された複合シート部材１３は、後に詳述するプレカット工程において、サイドシール部１８における少なくともヒートシール領域２３（図１参照）を含む所定の部位の弾性部材１２ａ，１２ｂ，１２ｃがプレカット装置２４によって分断された後、これの上面に吸収性本体１７が載置されて取り付けられる。 After that, the base sheet 11 superposed while sandwiching the waist opening elastic member 12a, the leg opening elastic member 12b, and the trunk periphery elastic member 12c in a stretched state between the pair of nip rolls 22a, 22a. The composite sheet member 13 in which the elastic members 12a, 12b, and 12c are attached to the base material sheets 11 and 21 in an expanded state is formed by feeding and pressing the auxiliary base material sheet 21. Further, the formed composite sheet member 13 is a precut device in which a predetermined portion of the elastic members 12a, 12b, and 12c including at least the heat seal region 23 (see FIG. 1) in the side seal portion 18 is precut in a precut process described in detail later. After being divided by 24, the absorptive main body 17 is placed on and attached to the upper surface thereof.
次に、吸収性本体１７が取り付けられた複合シート部材１３は、レッグホールカッター装置２５を用いて、レッグ開口部を設けるためのレッグホールが開口形成された後に、腹側部Ａと背側部Ｂとが重ね合わされるように二つ折りにされ、さらにシール＆カッター装置２６を用いて、サイドシール部１８にヒートシールが施されると共に、連続形成された隣接するパンツ型おむつ１０がサイドシール部１８の切り離し線２７に沿って切り離されて、個々の製品に分割されることにより、パンツ型おむつ１０が形成されることになる。 Next, the composite sheet member 13 to which the absorptive main body 17 is attached is formed by using the leg hole cutter device 25, and after the leg hole for providing the leg opening is formed, the ventral side part A and the back side part B is folded in two so as to overlap with each other, and further, the side seal portion 18 is heat sealed using the seal and cutter device 26, and the continuously formed adjacent pant-type diaper 10 is a side seal portion. The pants-type diaper 10 is formed by being separated along the 18 separation lines 27 and being divided into individual products.
そして、本実施形態の吸収性物品の製造方法は、上述のように、基材シート１１，２１に弾性部材１２ａ，１２ｂ，１２ｃが伸長状態で配設された、吸収性本体１７を覆うパンツ型おむつ１０の外装材１４として用いられる複合シート部材１３の腹側部Ａ又は背側部Ｂのいずれか一方のサイドシール部１８を、他方のサイドシール部１８を他のシート部材としてシール＆カッター装置２６によってヒートシールする工程と製品単体にカットする工程を含んでいる。またヒートシールする工程は、図４（ａ）〜（ｄ）に示すように、ヒートシール領域２３における複合シート部材１３に配設された弾性部材１２ａ，１２ｂ，１２ｃの少なくとも一部（本実施形態では弾性部材１２ａ，１２ｂ，１２ｃの全部）を分断すること（プレカット工程）により収縮機能が発現されないようにした後に、当該ヒートシール領域２３のヒートシールを行うようにしたものである。すなわち、本実施形態によれば、ヒートシールされる外装材１４の腹側部Ａ及び背側部Ｂの双方のサイドシール部１８が、いずれも弾性部材１２ａ，１２ｂ，１２ｃが伸長状態で配設された複合シート部材となっている。 And the manufacturing method of the absorbent article of this embodiment is the underpants type which covers the absorptive main body 17 by which the elastic members 12a, 12b, and 12c were arrange | positioned by the base material sheets 11 and 21 in the expansion | extension state as mentioned above. Sealing / cutter device using either the side seal portion 18 of the ventral side A or the back side B of the composite sheet member 13 used as the exterior material 14 of the diaper 10 as the other sheet member. The process of heat-sealing by 26 and the process of cutting into a single product are included. 4A to 4D, at least a part of the elastic members 12a, 12b, 12c disposed on the composite sheet member 13 in the heat seal region 23 (this embodiment). Then, all of the elastic members 12a, 12b, and 12c) are divided (pre-cut process) so that the contraction function is not expressed, and then the heat seal of the heat seal region 23 is performed. That is, according to the present embodiment, the side seal portions 18 on both the ventral side A and the back side B of the exterior material 14 to be heat-sealed are all arranged with the elastic members 12a, 12b, and 12c in an extended state. It is the composite sheet member made.
また、本実施形態によれば、ヒートシール領域２３の弾性部材１２ａ，１２ｂ，１２ｃを収縮機能が発現されないように分断するプレカット工程は、プレカット装置２４を用いて、基材シート１１，２１への損傷を実質的に抑制しつつ効率的に弾性部材１２ａ，１２ｂ，１２ｃを切断できる方法として、例えば所定領域内に分散配置された複数の凸部による押圧手段で押圧する方法を適用して行われる。ここで、押圧を行うプレカット装置２４は、例えば特開２００２−２５３６０５号公報に記載の複合伸縮部材の製造方法に用いる弾性部材分断部と略同様の構成を備えるもので、弾性部材切断用の多数の凸部２８（図４（ｂ）参照）を有する加圧部２９を周面に備えたカットロール３０（図３参照）と、カットロール３０に対向配置された表面平滑なアンビルロール３１とからなり、これらのロール３０，３１の間に、基材シート１１，２１に弾性部材１２ａ，１２ｂ，１２ｃを伸長状態で配設した複合シート部材１３を通過させると共に、切り離し線２７（図４（ａ）参照）を挟んだヒートシール領域２３を含む両側の所定幅のサイドシール部１８に、加圧部２９から加圧力を加えることにより、加圧部２９に設けられた多数の凸部２８を介して、図４（ｃ）に示すように、各弾性部材１２ａ，１２ｂ，１２ｃを、基材シート１１，２１の損傷を実質的に抑制しつつ、ヒートシール領域２７を含むサイドシール部１８において連続しないように、各々複数に分断することができるようになっている。 Moreover, according to this embodiment, the precut process which divides | segments the elastic members 12a, 12b, and 12c of the heat seal area | region 23 so that a contraction function may not be expressed is performed to the base material sheets 11 and 21 using the precut apparatus 24. As a method for efficiently cutting the elastic members 12a, 12b, and 12c while substantially suppressing damage, for example, a method of pressing with pressing means using a plurality of convex portions distributed in a predetermined area is applied. . Here, the pre-cut device 24 that performs pressing has a configuration substantially the same as that of the elastic member dividing portion used in the method for manufacturing a composite elastic member described in, for example, Japanese Patent Application Laid-Open No. 2002-253605. From a cut roll 30 (see FIG. 3) provided with a pressurizing portion 29 having a convex portion 28 (see FIG. 4B) on the peripheral surface, and an anvil roll 31 having a smooth surface disposed facing the cut roll 30 The composite sheet member 13 in which the elastic members 12a, 12b, 12c are disposed in the stretched state is passed through the base sheets 11, 21 between the rolls 30, 31, and the separation line 27 (FIG. A large number of convex portions 28 provided in the pressurizing portion 29 are formed by applying pressure from the pressurizing portion 29 to the side seal portions 18 having a predetermined width on both sides including the heat seal area 23 sandwiching the reference)). Then, as shown in FIG. 4 (c), the elastic members 12a, 12b, and 12c are substantially prevented from damaging the base sheets 11 and 21, while the side seal portion 18 including the heat seal region 27 is included. Each can be divided into a plurality of pieces so as not to be continuous.
なお、カットロール３０の周面に設けられた加圧部２９における多数の凸部２８は、加圧部２９に分散配置されて、少なくとも２以上の凸部２８がカットロール３０の周方向に並ぶように配置されていることが好ましい。また多数の凸部２８の形状は、ダイヤ形状、丸形状、長丸形状、矩形形状、三角形状、星やハート等の幾何学模様、線状等、特に制限されることなく採用することができるが、カットロール３０の軸長方向に沿う長さが１〜２０ｍｍ、周方向に沿う長さが０．２〜５ｍｍ程度であることが好ましい。さらに、多数の凸部２８は、各面積が０．２〜１００ｍｍ2 程度のものを、ピッチ（凸部の中心点同士の距離）２〜５０ｍｍ程度で規則的に配置することが好ましい。さらにまた、加圧部２９における多数の凸部２８の合計面積は、加圧部２９の全面積の０．１〜８０％、特に１０〜５０％であることが好ましい。ここで、加圧部２９の全面積は、最外部の凸部２８を結んだ線の枠内の面積である。 In addition, a large number of convex portions 28 in the pressurizing unit 29 provided on the peripheral surface of the cut roll 30 are distributed in the pressurizing unit 29, and at least two or more convex portions 28 are arranged in the circumferential direction of the cut roll 30. It is preferable that they are arranged as described above. Moreover, the shape of many convex part 28 can employ | adopt, without being specifically limited, such as a diamond shape, a round shape, a long round shape, a rectangular shape, a triangular shape, a geometric pattern such as a star or a heart, or a linear shape. However, it is preferable that the length along the axial direction of the cut roll 30 is 1 to 20 mm, and the length along the circumferential direction is about 0.2 to 5 mm. Furthermore, it is preferable that a large number of convex portions 28 each having an area of about 0.2 to 100 mm 2 are regularly arranged at a pitch (distance between the central points of the convex portions) of about 2 to 50 mm. Furthermore, the total area of the many convex portions 28 in the pressurizing unit 29 is preferably 0.1 to 80%, particularly 10 to 50% of the total area of the pressurizing unit 29. Here, the total area of the pressurizing portion 29 is an area within a frame of a line connecting the outermost convex portions 28.
そして、上述のプレカット工程において、各弾性部材１２ａ，１２ｂ，１２ｃを予め分断することにより、サイドシール部１８のヒートシール領域２３における複合シート部材１３に配設された弾性部材１２ａ，１２ｂ，１２ｃが収縮機能を発現しないよう分断された本実施形態のパンツ型おむつ１０が、吸収性物品として容易に製造されることになる。ここで、弾性部材１２ａ，１２ｂ，１２ｃが収縮機能を発現しないよう分断されるとは、各弾性部材１２ａ，１２ｂ，１２ｃが切断により伸張状態を解除されて、完全に弾性伸縮性を発現しないように分断されることが好ましいが、実質的に弾性伸縮性を発現しない程度、例えばサイドシール部１８にギャザーが形成されない程度の弱い弾性伸縮性を発現している状態も含まれる。 And in the above-mentioned precut process, elastic member 12a, 12b, 12c arrange | positioned at the composite sheet member 13 in the heat seal area | region 23 of the side seal part 18 by dividing | segmenting each elastic member 12a, 12b, 12c previously. The pants-type diaper 10 according to the present embodiment divided so as not to exhibit the contraction function is easily manufactured as an absorbent article. Here, when the elastic members 12a, 12b, and 12c are divided so as not to develop the contraction function, the elastic members 12a, 12b, and 12c are released from the stretched state by cutting so that the elastic members do not fully exhibit elastic elasticity. Although it is preferable to be divided, it includes a state in which weak elastic stretchability is exhibited to such an extent that substantially no elastic stretchability is exhibited, for example, a gather is not formed in the side seal portion 18.
本実施形態の吸収性物品の製造方法及びパンツ型おむつ１０によれば、伸長状態で弾性部材１２ａ，１２ｂ，１２ｃが基材シート１１に配設された複合シート部材１３によるサイドシール部１８同士がヒートシールされるヒートシール領域２３において、弾性部材１２ａ，１２ｂ，１２ｃが収縮するのを効果的に回避して、外観や風合いに優れたサイドシール部１８を得ることができる。すなわち、本実施形態によれば、サイドシール部１８のヒートシール領域２３に配置される弾性部材１２ａ，１２ｂ，１２ｃが分断されているので、当該ヒートシール領域２３にヒートシールを施した後に、隣接するパンツ型おむつ１０が切り離し線２７に沿って切り離された場合でも、図５（ａ），（ｂ）に示すように弾性部材１２ａ，１２ｂ，１２ｃが分断されないままの状態の如く、連続搬送時に伸長状態に保持さた弾性部材１２ａ，１２ｂ，１２ｃが切り離されて伸長状態が解除され、当該ヒートシール領域１８においてこれの幅を狭めるように収縮して（図５（ｂ）参照）サイドシール部１８の外観や柔らかい風合いを損なうことなく、本実施形態によれば、図４（ｄ）に示すように、切り離された後もヒートシール時の状態を容易に保持して、優れた外観や柔らかい風合いを備えることが可能になる。 According to the manufacturing method of the absorbent article and the pants-type diaper 10 of the present embodiment, the side seal portions 18 formed by the composite sheet member 13 in which the elastic members 12a, 12b, and 12c are disposed on the base sheet 11 in an expanded state. In the heat-sealed region 23 to be heat-sealed, it is possible to effectively avoid the elastic members 12a, 12b, and 12c from contracting, and to obtain the side seal portion 18 that is excellent in appearance and texture. That is, according to this embodiment, since the elastic members 12a, 12b, and 12c arranged in the heat seal region 23 of the side seal portion 18 are divided, the heat seal region 23 is adjacent after the heat seal is performed. Even when the pants-type diaper 10 to be cut is cut along the cut-off line 27, the elastic members 12a, 12b, and 12c remain unseparated as shown in FIGS. The elastic members 12a, 12b, and 12c held in the extended state are cut off to be released from the extended state, and contracted to narrow the width of the heat seal region 18 (see FIG. 5B). According to the present embodiment, the state at the time of heat sealing can be maintained even after the separation as shown in FIG. Held in, it becomes possible to provide an excellent appearance and soft texture.
また、ヒートシール領域２３における弾性部材１２ａ，１２ｂ，１２ｃが収縮しないことにより、ヒートシールによるヒートシール領域２３の適正な接合強度を保持して、安定したシール強度でサイドシール部１８を接合することが可能になる。 Further, since the elastic members 12a, 12b, and 12c in the heat seal region 23 do not contract, the side seal portion 18 is bonded with a stable seal strength while maintaining an appropriate bonding strength of the heat seal region 23 by heat sealing. Is possible.
なお、本発明は上記実施形態に限定されることなく種々の変更が可能である。例えば、本発明は、パンツ型おむつに限定されることなく、基材シートに弾性部材が伸長状態で配設された複合シート部材が他のシート部材とヒートシールされる部分を有する、その他の種々の吸収性物品に適用するこができる。また、複合シート部材がヒートシールされる他のシート部材は、弾性部材が配設された複合シートである必要は必ずしもなく、弾性部材を備えていないシート部材であっても良い。さらに、例えば上述のパンツ型おむつにおいて、サイドシール部で分断される弾性部材は、ウエスト開口部弾性部材、レッグ開口部弾性部材、及び胴周囲部弾性部材の全てである必要は必ずしもなく、例えば胴周囲部弾性部材の一部又は全部であっても良い。さらにまた、本発明の吸収性物品は、上記製造方法以外の方法によって製造することもできる。 The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the present invention is not limited to a pants-type diaper, and a composite sheet member in which an elastic member is disposed in an expanded state on a base sheet has a portion that is heat-sealed with another sheet member. It can be applied to absorbent articles. Further, the other sheet member to which the composite sheet member is heat-sealed is not necessarily a composite sheet in which an elastic member is disposed, and may be a sheet member that does not include the elastic member. Further, for example, in the above-described pants-type diaper, the elastic member divided by the side seal portion does not necessarily have to be all of the waist opening elastic member, the leg opening elastic member, and the waist circumference elastic member. A part or all of the peripheral elastic member may be used. Furthermore, the absorbent article of the present invention can be manufactured by a method other than the above manufacturing method.
また、基材シートへの損傷を実質的に抑制しつつ、弾性部材を収縮機能が発現されないように分断する手段として、上述の所定領域内に分散配置された複数の凸部による押圧手段で押圧する方法を用いる必要は必ずしもなく、例えば図６（ａ），（ｂ）に示すような、プレカットカッター３２によるプレカット手段を採用することもでき、これによって基材シートへの加工を目立ち難くすることができる。 Further, as a means for dividing the elastic member so as not to exhibit a contracting function while substantially suppressing damage to the base sheet, pressing is performed by pressing means using a plurality of convex portions dispersedly arranged in the predetermined region. It is not always necessary to use the method of performing, for example, pre-cut means by the pre-cut cutter 32 as shown in FIGS. 6A and 6B can be employed, thereby making the processing of the base sheet less noticeable. Can do.
１０ パンツ型おむつ（吸収性物品）
１１ 基材シート
１２ａ ウエスト開口部弾性部材
１２ｂ レッグ開口部弾性部材
１２ｃ 胴周囲部弾性部材
１３ 複合シート部材
１４ 外装材
１７ 吸収性本体
１８ サイドシール部
２１ 補助基材シート
２３ ヒートシール領域
２４ プレカット装置
２７ 切り離し線
２８ 凸部
２９ 加圧部
３０ カットロール
３１ アンビルロール
３２ プレカットカッター
Ａ 腹側部
Ｂ 背側部
10 Pants-type diapers (absorbent articles)
11 base material sheet 12a waist opening elastic member 12b leg opening elastic member 12c waist circumference elastic member 13 composite sheet member 14 exterior material 17 absorbent main body 18 side seal part 21 auxiliary base material sheet 23 heat seal region 24 precut device 27 Cut line 28 Convex part 29 Pressurization part 30 Cut roll 31 Anvil roll 32 Precut cutter A Abdominal side part B Back side part
Claims (5)
前記ヒートシールする工程は、ヒートシール領域における前記複合シート部材に配設された弾性部材の少なくとも一部を分断することにより収縮機能が発現されないようにした後に、当該ヒートシール領域のヒートシールを行う吸収性物品の製造方法。 A method for producing an absorbent article comprising a step of heat-sealing a composite sheet member in which an elastic member is disposed in an expanded state on a base sheet with another sheet member,
The heat sealing step includes performing heat sealing in the heat sealing region after dividing the elastic member disposed in the composite sheet member in the heat sealing region to prevent the contraction function from being expressed. Manufacturing method of absorbent article.
前記ヒートシール領域は、前記伸長状態の弾性部材の少なくとも一部を分断した後に、ヒートシールが行われたことにより、
前記ヒートシール領域における前記複合シート部材に配設された弾性部材の少なくとも一部が分断されて収縮機能が発現されないようなっている吸収性物品。 An absorbent article comprising a heat sealing region in which a composite sheet member arranged in an expanded state on a base sheet is heat-sealed with another sheet member,
The heat seal region is obtained by performing heat sealing after dividing at least a part of the elastic member in the stretched state.
An absorptive article in which at least a part of an elastic member arranged in the composite sheet member in the heat seal region is divided so that a contraction function is not expressed.
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| JP5099883B2 (en) * | 2007-03-20 | 2012-12-19 | 王子ネピア株式会社 | Elastic material cutting roll and method for producing disposable diaper |
| JP4909778B2 (en) * | 2007-03-20 | 2012-04-04 | 王子ネピア株式会社 | Elastic material cutting roll and method for producing disposable diaper |
| JP5346176B2 (en) * | 2008-06-03 | 2013-11-20 | ユニ・チャーム株式会社 | Pants-shaped wearing article and manufacturing method thereof |
| JP5346177B2 (en) * | 2008-06-03 | 2013-11-20 | ユニ・チャーム株式会社 | Pants-shaped wearing article and manufacturing method thereof |
| JP5250406B2 (en) * | 2008-12-03 | 2013-07-31 | 花王株式会社 | Sheet processing method and processing apparatus |
| JP5250407B2 (en) * | 2008-12-19 | 2013-07-31 | 株式会社リブドゥコーポレーション | Disposable pants-type diaper and method for manufacturing the same |
| JP2011120626A (en) * | 2009-12-08 | 2011-06-23 | Kao Corp | Pants type absorbent article |
| US9205003B2 (en) * | 2010-09-16 | 2015-12-08 | Dsg Technology Holdings Ltd. | Article with elastic distribution and system and method for making same |
| JP5261605B2 (en) * | 2011-11-15 | 2013-08-14 | 花王株式会社 | Manufacturing method for pants-type wearing articles |
| JP5822278B2 (en) * | 2013-11-01 | 2015-11-24 | 花王株式会社 | Disposable diapers |
| JP6188220B2 (en) * | 2013-12-17 | 2017-08-30 | 花王株式会社 | Manufacturing method for pants-type wearing articles |
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