JP2008212278A - Disposable absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable absorbent article which effectively prevents leakage of urine or the like from an absorbent member to an outer material without impairing softness (touch against the skin), air-permeability, or the like. <P>SOLUTION: A plurality of streaky application parts 41 for bonding the outer material 2 and the absorbent member 3 are formed by applying a hot-melt adhesive. The width of the plurality of streaky application parts 41 in the longitudinal direction Y is set to be the widest on a crotch part 8a. In particular, the width of the plurality of streaky application parts 41 is gradually increased in the longitudinal direction Y from front and back edge sides to a crotch side of the absorbent member 3. The hot-melt adhesive is applied to the streaky application parts 41 by a contact application method. Because the crotch part 8a is weak as leg elastic members 18 and 19 are cut at the crotch part, the streaky application parts 41 on the crotch part 8a is positioned such that the streaky application parts cover at least a part of the outer material 2 where the leg elastic members 18 and 19 are cut. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、使い捨て吸収性物品に関する。   The present invention relates to a disposable absorbent article.

従来の使い捨て吸収性物品として、外装材と、その肌面側に付与される吸収部材とを、ストライプ状に間欠塗工された接着剤により接合したものがある（特許文献１）。これによって、この吸収性物品では、肌に対して優しい風合いやムレ防止等を図っている。   As a conventional disposable absorbent article, there is one in which an exterior material and an absorbent member applied to the skin surface are joined by an adhesive that is intermittently applied in a stripe shape (Patent Document 1). Thereby, in this absorbent article, the gentle texture with respect to skin, prevention of stuffiness, etc. are aimed at.

しかし、この従来技術では、吸収部材と外装材との接合面における前後方向の全域に亘って一定の塗布幅で接着剤の筋状塗布部が設けられる構成であるため、着座姿勢時等に体重がかかりやすい股下部では、吸収部材から漏れた尿等が股下部で筋状塗布部間の隙間から外装材側に漏れ出すおそれがある。その対策として、全体的に接着剤の筋状塗布部の塗布幅を大きくする方法が考えられるが、筋状塗布部の塗布幅を大きくすると、肌に対する風合い及び通気性等が損なわれるおそれがある。   However, in this prior art, the adhesive streaks are provided with a constant application width across the entire front-rear direction of the joint surface between the absorbent member and the exterior material. In the crotch where it is easy to apply, there is a risk that urine etc. leaking from the absorbent member may leak out from the gap between the streaky application parts to the exterior material side in the crotch. As a countermeasure, a method of enlarging the application width of the streaky application part of the adhesive as a whole can be considered, but if the application width of the streak application part is increased, the texture and breathability to the skin may be impaired. .

例えば、特許文献２のように、股下部で脚用弾性部材を切断して脚用弾性部材の収縮力を弱化させたものでは、脚用弾性部材の切断処理が施された外装材の部分の防水性能が低下する場合がある。このような場合において、尿等が吸収部材から外装材側に漏れ出すと、その尿等が防水性能が低下した外装材の股下部を介して外部に漏れ出すおそれがある。
特開２００５− ９５２６１号公報 特開２００４−１６７０４３号公報 For example, as in Patent Document 2, when the leg elastic member is cut at the crotch portion and the contraction force of the leg elastic member is weakened, the portion of the exterior material that has been subjected to the cutting process of the leg elastic member Waterproof performance may be reduced. In such a case, if urine or the like leaks from the absorbing member to the exterior material side, the urine or the like may leak to the outside through the crotch portion of the exterior material having reduced waterproof performance.
JP-A-2005-95261 JP 2004-167043 A

そこで、本発明の解決すべき課題は、柔軟性（肌に対する風合い）及び通気性等を損なわずに、尿等が吸収部材から外装材側に漏れ出すのを効果的に抑制できる使い捨て吸収性物品を提供することである。   Therefore, the problem to be solved by the present invention is a disposable absorbent article that can effectively prevent urine and the like from leaking from the absorbent member to the exterior material side without impairing flexibility (feel to the skin) and air permeability. Is to provide.

上記の課題を解決するため、請求項１の発明では、外装材と、前記外装材の肌面側に付与され、吸収体を有する吸収部材と、塗布面に実質的に接触する塗工部によりホットメルト接着剤が塗布される接触塗布方式により、前記外装材及び前記吸収部材の両対向面のうちのいずれか一方に、当該吸収性物品を略平面状に展開したときに略横方向に沿って延びる筋状に前記ホットメルト接着剤が塗布されてなり、前記外装材と前記吸収部材とを接合する複数の筋状塗布部とを備え、前記複数の筋状塗布部の当該吸収性物品の縦方向に沿った各幅のうち、股下部に位置する筋状塗布部の幅が最も大きく設定されている。   In order to solve the above-mentioned problem, in the invention of claim 1, an exterior material, an absorbent member provided on the skin surface side of the exterior material, having an absorbent body, and a coating portion that substantially contacts the application surface According to a contact coating method in which a hot-melt adhesive is applied, when the absorbent article is developed in a substantially planar shape on either one of the facing surfaces of the exterior material and the absorbent member, the substantially horizontal direction is met. The hot melt adhesive is applied in the form of streaks extending, and includes a plurality of streaked application portions that join the exterior material and the absorbent member, and the absorbent article of the plurality of streaked application portions Of the widths along the vertical direction, the width of the streaked application portion located at the crotch is set to be the largest.

また、請求項２の発明では、請求項１の発明に係る使い捨て吸収性物品において、前記複数の筋状塗布部の前記縦方向に沿った各幅は、前後の縁部側から股下側にいくに従って大きくなる。   According to a second aspect of the present invention, in the disposable absorbent article according to the first aspect of the present invention, each width along the vertical direction of the plurality of streaked application portions goes from the front and rear edge sides to the crotch side. Grows according to.

また、請求項３の発明では、請求項１又は請求項２の発明に係る使い捨て吸収性物品において、前記外装材の左右の脚周りに位置する脚周り部から前記股下部にかけて付与された脚用弾性部材をさらに備え、前記脚用弾性部材における前記股下部に付与された部分は、前記外装材に付与された状態で切断されて弱化させており、前記複数の筋状塗布部のうちの股下部に位置する筋状塗布部が、前記脚用弾性部材が切断されている前記外装材の領域の少なくとも一部を覆っている。   Moreover, in invention of Claim 3, in the disposable absorbent article which concerns on invention of Claim 1 or Claim 2, it is for the legs provided from the leg periphery part located in the circumference | surroundings of the leg of the said exterior material to the said crotch part. An elastic member is further provided, and a portion of the leg elastic member that is applied to the crotch portion is cut and weakened in a state of being applied to the exterior member, and the crotch of the plurality of streaky application portions The streaky application part located in the part covers at least a part of the region of the exterior material from which the leg elastic member is cut.

また、請求項４の発明では、外装材と、前記外装材の肌面側に付与され、吸収体を有する吸収部材と、塗布面に実質的に接触する塗布面に実質的に接触した塗工部によりホットメルト接着剤が塗布される接触塗布方式により、前記外装材及び前記吸収部材の両対向面のうちのいずれか一方に、前記ホットメルト接着剤が筋状に塗布されてなり、前記外装材と前記吸収部材とを接合する複数の筋状塗布部と、前記外装材及び前記吸収部材の両対向面のうちのいずれか他方における股下部の少なくとも一部に、前記ホットメルト接着剤が面状に塗布されてなり、前記外装材と前記吸収部材とを接合する面状塗布部とを備える。   Further, in the invention of claim 4, the exterior material, the absorbent member provided on the skin surface side of the exterior material and having an absorbent body, and the coating substantially in contact with the application surface substantially in contact with the application surface The hot melt adhesive is applied in a streak form to either one of the facing surfaces of the exterior material and the absorbing member by a contact coating method in which a hot melt adhesive is applied by a portion. The hot melt adhesive is applied to at least a part of the crotch portion of either one of the facing surfaces of the exterior material and the absorbent member, and a plurality of streaked application portions that join the material and the absorbent member And a planar application part that joins the exterior material and the absorbing member.

また、請求項５の発明では、請求項４の発明に係る使い捨て吸収性物品において、前記外装材の左右の脚周りに位置する脚周り部から前記股下部にかけて付与された脚用弾性部材をさらに備え、前記脚用弾性部材における前記股下部に付与された部分は、前記外装材に付与された状態で切断されて弱化させており、前記面状塗布部が、前記脚用弾性部材が切断されている前記外装材の領域の少なくとも一部を覆っている。   According to a fifth aspect of the present invention, in the disposable absorbent article according to the fourth aspect of the present invention, the leg elastic member provided from the leg peripheral portion located around the left and right legs of the exterior material to the crotch portion is further provided. A portion of the leg elastic member that is applied to the crotch portion is cut and weakened in a state of being applied to the exterior material, and the planar application portion is cut from the leg elastic member. And covering at least a part of the region of the exterior material.

また、請求項６の発明では、請求項４又は請求項５の発明に係る使い捨て吸収性物品において、前記面状塗布部に塗布される前記ホットメルト接着剤は、吸水性樹脂を含有している。   Moreover, in invention of Claim 6, in the disposable absorbent article which concerns on invention of Claim 4 or Claim 5, the said hot-melt-adhesive apply | coated to the said planar application part contains a water absorbing resin. .

請求項１に記載の発明によれば、外装材と吸収部材とを接合するホットメルト接着剤が塗布された複数の筋状塗布部の当該吸収性物品の縦方向に沿った各幅のうち、股下部に位置する筋状塗布部の幅が最も大きく設定されている。それ故、着座時等に体重がかかりやすく漏れ等が生じやすい股下部において、接着剤の筋状塗布部の塗布幅を他の領域の筋状塗布部の塗布幅よりも大きくするとことにより、尿等が吸収部材から外装材側に漏れ出すのを接着剤の筋状塗布部により効果的に遮ることができる。その結果、全体的なホットメルト接着剤の塗布面積や塗布量を抑制して吸収性物品の柔軟性（肌に対する風合い）及び通気性等を損なわずに、尿等が吸収部材から外装材側に漏れ出すのを効果的に抑制できる。   According to the invention described in claim 1, among the widths along the longitudinal direction of the absorbent article of the plurality of streaked application portions to which the hot melt adhesive that joins the exterior material and the absorbent member is applied, The width of the streaky application part located at the crotch is set to be the largest. Therefore, in the crotch part where the body weight tends to be applied and the leakage is likely to occur at the time of sitting etc., the application width of the streaky application part of the adhesive is made larger than the application width of the streaky application part of other regions, thereby And the like can be effectively blocked by the adhesive streaks. As a result, urine and the like are moved from the absorbent member to the exterior material side without reducing the overall hot-melt adhesive application area and amount and without impairing the flexibility (feel to the skin) and breathability of the absorbent article. Leakage can be effectively suppressed.

また、外装材と吸収部材とを接合するホットメルト接着剤が接触塗布方式により塗布されるため、スパイラルスプレー塗布方式等のように塗布処理時にホットメルト接着剤が飛散して製品や製造ラインの不必要な部分に付着して、製品の品質が低下したり、製造ラインのメンテナンスの負荷が増大するのを防止することができる。   In addition, since the hot melt adhesive that joins the exterior material and the absorbent member is applied by the contact application method, the hot melt adhesive is scattered during the application process, as in the spiral spray application method, and there is no problem in the product or production line. It is possible to prevent the quality of the product from deteriorating or increasing the maintenance load on the production line by adhering to a necessary portion.

また、筋状塗布部のパターン（塗布幅、隙間間隔及びそれらの分布等）は、例えば塗工ヘッド部のストライプ状の塗布パターンを規定するための櫛刃状部材等を交換するだけで容易に変更することができるため、筋状塗布部のパターンの変更等に容易に対応することができる。   In addition, the stripe-shaped application part pattern (application width, gap interval, and their distribution, etc.) can be easily obtained by simply replacing, for example, a comb blade member for defining a stripe-like application pattern of the coating head part. Since it can be changed, it is possible to easily cope with a change in the pattern of the streaky application portion.

請求項２に記載の発明によれば、外装材と吸収部材とを接合するホットメルト接着剤が塗布された複数の筋状塗布部の縦方向に沿った各幅は、前後の縁部側から股下側にいくに従って大きくなるように設定されている。それ故、着座時等に体重がかかりやすく漏れ等が生じやすい股下部の近くに位置する部分ほどホットメルト接着剤の筋状塗布部の塗布幅を大きくすることにより、吸収性物品の柔軟性及び通気性等を保持しつつ、股下部及びその周辺にて尿等が吸収部材から外装材側に漏れ出すのを接着剤の筋状塗布部によってより効果的に遮ることができる。   According to invention of Claim 2, each width along the vertical direction of the some streaky application part with which the hot melt adhesive which joins an exterior material and an absorption member was apply | coated is from the front-and-back edge side. It is set to increase as it goes to the crotch side. Therefore, by increasing the application width of the streaked application part of the hot melt adhesive toward the part located near the crotch where weight is likely to be easily taken and when leakage is likely to occur, the flexibility of the absorbent article and It is possible to more effectively block leakage of urine and the like from the absorbent member to the exterior material side at the crotch and its periphery while maintaining air permeability and the like.

請求項３に記載の発明によれば、脚用弾性部材の股下部に付与された部分が切断されて弱化されているため、脚用弾性部材の締め付けが強すぎて着用感が損なわれたり、脚用弾性部材の収縮により吸収部材の吸収体によじれが生じる等の不都合を回避できる。   According to invention of Claim 3, since the part provided to the crotch part of the leg elastic member is cut and weakened, tightening of the leg elastic member is too strong and the wearing feeling is impaired, It is possible to avoid inconveniences such as kinking caused by the absorbent body of the absorbent member due to the contraction of the leg elastic member.

また、外装材と吸収部材とを接合するホットメルト接着剤の複数の筋状塗布部のうちの股下部に位置する筋状塗布部が、脚用弾性部材が切断されている外装材の領域の少なくとも一部を覆っている。それ故、脚用弾性部材の切断処理が施された外装材の部分の防水性能が低下している場合であっても、その部分に設けらたホットメルト接着剤の筋状塗布部により、脚用弾性部材が切断された外装材の部分を介して尿等が外部に漏れるのを抑制できる。   In addition, the streaky application portion located at the crotch portion of the plurality of streaky application portions of the hot melt adhesive that joins the exterior material and the absorbent member is an area of the exterior material where the leg elastic member is cut. It covers at least part of it. Therefore, even if the waterproof performance of the portion of the exterior material that has been subjected to the cutting process of the leg elastic member has been lowered, the leg-applied portion of the hot melt adhesive provided in that portion causes the leg to It is possible to suppress urine or the like from leaking to the outside through the portion of the exterior material from which the elastic member is cut.

請求項４に記載の発明によれば、外装材及び吸収部材の対向面のほぼ全域に、ホットメルト接着剤が筋状に塗布された複数の筋状塗布部が設けられ、着座時等に体重がかかりやすく漏れ等が生じやすい股下部については、その筋状塗布部に加えてホットメルト接着剤が面状に塗布された面状塗布部が追加された構成である。それ故、全体的なホットメルト接着剤の塗布面積や塗布量を抑制して吸収性物品の柔軟性（肌に対する風合い）及び通気性等を維持しつつ、股下部において尿等が吸収部材から外装材側に漏れ出すのを効果的に遮ることができる。特に、外装材及び吸収部材の両対向面における股下部以外の部分については、ホットメルト接着剤を筋状の間欠塗工する構成であるため、良好な通気性等が得られる。   According to the fourth aspect of the present invention, a plurality of streaked application portions to which the hot melt adhesive is applied in a streak shape are provided in almost the entire area of the facing surfaces of the exterior material and the absorbing member. The crotch part, which is likely to be covered and easily leaks, has a configuration in which a sheet-like application part to which a hot melt adhesive is applied in a sheet form is added in addition to the stripe-like application part. Therefore, urine etc. is covered from the absorbent member at the crotch while maintaining the flexibility (feel to the skin) and breathability of the absorbent article by suppressing the overall hot melt adhesive application area and amount. It is possible to effectively block leakage to the material side. In particular, the portions other than the crotch portion on both facing surfaces of the exterior material and the absorbing member have a configuration in which a hot melt adhesive is intermittently applied in a streak shape, and thus good air permeability and the like can be obtained.

また、外装材と吸収部材とを接合するための筋状塗布部において、ホットメルト接着剤が接触塗布方式により塗布されるため、スパイラルスプレー塗布方式等のように塗布処理時にホットメルト接着剤が飛散して製品や製造ラインの不必要な部分に付着して、製品の品質が低下したり、製造ラインのメンテナンスの負荷が増大するのを防止することができる。   In addition, since the hot melt adhesive is applied by the contact application method at the streaky application part for joining the exterior material and the absorbing member, the hot melt adhesive is scattered during the application process as in the spiral spray application method. Thus, it is possible to prevent the quality of the product from deteriorating due to adhering to an unnecessary part of the product or the production line or increasing the maintenance load of the production line.

また、筋状塗布部のパターン（塗布幅、隙間間隔及びそれらの分布等）は、例えば塗工ヘッド部のストライプ状の塗布パターンを規定するための櫛刃状部材等を交換するだけで容易に変更することができるため、筋状塗布部のパターンの変更等に容易に対応することができる。   In addition, the stripe-shaped application part pattern (application width, gap interval, and their distribution, etc.) can be easily obtained by simply replacing, for example, a comb blade member for defining a stripe-like application pattern of the coating head part. Since it can be changed, it is possible to easily cope with a change in the pattern of the streaky application portion.

請求項５に記載の発明によれば、脚用弾性部材の股下部に付与された部分が切断されて弱化されているため、脚用弾性部材の締め付けが強すぎて着用感が損なわれたり、脚用弾性部材の収縮により吸収部材の吸収体によじれが生じる等の不都合を回避できる。   According to the invention of claim 5, since the portion applied to the crotch part of the leg elastic member is cut and weakened, the leg elastic member is tightened too much, and the wearing feeling is impaired, It is possible to avoid inconveniences such as kinking caused by the absorbent body of the absorbent member due to the contraction of the leg elastic member.

また、外装材と吸収部材とを接合するホットメルト接着剤の面状塗布が、脚用弾性部材が切断されている外装材の領域の少なくとも一部を覆っている。それ故、脚用弾性部材の切断処理が施された外装材の部分の防水性能が低下している場合であっても、その部分に設けらたホットメルト接着剤の面状塗布部により、脚用弾性部材が切断された外装材の部分を介して尿等が外部に漏れるのを抑制できる。   Moreover, the planar application of the hot melt adhesive that joins the exterior material and the absorbing member covers at least a part of the region of the exterior material where the leg elastic member is cut. Therefore, even if the waterproof performance of the part of the exterior material that has been subjected to the cutting process of the leg elastic member is lowered, the leg-coated portion of the hot melt adhesive provided on the part can It is possible to suppress urine or the like from leaking to the outside through the portion of the exterior material from which the elastic member is cut.

請求項６に記載の発明によれば、外装材と吸収部材との対向面における股下部に設けられる面状塗布部には、吸水性樹脂を含有したホットメルト接着剤が塗布されるため、面状塗布部に塗布されたホットメルト接着剤に吸収部材から漏れ出した尿等を吸収させることができ、その結果、吸収部材から漏れ出した尿等が外装材の股下部から外部に漏れ出すのをより確実に防止できる。   According to the invention described in claim 6, since the hot melt adhesive containing the water-absorbing resin is applied to the planar application portion provided in the crotch portion on the opposing surface of the exterior material and the absorbing member, The urine leaking from the absorbent member can be absorbed by the hot melt adhesive applied to the shaped coating part, and as a result, the urine leaked from the absorbent member leaks out from the crotch part of the exterior material Can be prevented more reliably.

また、吸水樹脂を含有したホットメルト接着剤は股下部のみの使用で済むため、吸収性物品の製造コストを抑制できる。   Moreover, since the hot-melt adhesive containing a water-absorbing resin can be used only in the crotch part, the manufacturing cost of the absorbent article can be suppressed.

［第１実施形態］
図１は本発明の第１実施形態に係る使い捨て吸収性物品（以下、単に「吸収性物品」という）の正面図であり、図２は図１の吸収性物品において左右のサイド接合部を展開した状態を示す図であり、図３は図２のＡ−Ａ線に沿った断面構造を模式的に示す図である。なお、本明細書において前後左右というときは着用者を基準としており、例えば、その着用者の左手側を左、右手側を右と呼んでいる。また、吸収性物品１の縦方向Ｙ（図２参照）とは吸収性物品１の上下又は前後方向に対応した方向をいい、吸収性物品１の横方向Ｘ（図２参照）とは吸収性物品１の左右方向に対応した方向をいう。 [First Embodiment]
FIG. 1 is a front view of a disposable absorbent article (hereinafter simply referred to as “absorbent article”) according to a first embodiment of the present invention, and FIG. 2 is a development of left and right side joints in the absorbent article of FIG. FIG. 3 is a diagram schematically showing a cross-sectional structure along the line AA in FIG. 2. In the present specification, the term “front / rear / left / right” refers to the wearer. For example, the left hand side of the wearer is referred to as the left and the right hand side is referred to as the right. Moreover, the longitudinal direction Y (refer FIG. 2) of the absorbent article 1 means the direction corresponding to the up-down or front-back direction of the absorbent article 1, and the horizontal direction X (refer FIG. 2) of the absorbent article 1 is absorptive. The direction corresponding to the left-right direction of the article 1 is said.

この吸収性物品１は、図１ないし図３に示すように、この吸収性物品１の外側に設けられる外装材２と、外装材２の肌面側に接合される吸収部材３とを備えている。   As shown in FIGS. 1 to 3, the absorbent article 1 includes an exterior material 2 provided on the outer side of the absorbent article 1 and an absorbent member 3 joined to the skin surface side of the exterior material 2. Yes.

外装材２は、着用者の前腹部、後背部及び股部にそれぞれあてがわれる前部６、後部７及び股部８を備えている。なお、ここでは外装材２が前部６、後部７及び股部８に渡って一体に構成された例について示したが、外装材２が前側の部分と後側の部分とが股部で分断されて別々の部材として構成されていてもよい。   The exterior material 2 includes a front part 6, a rear part 7, and a crotch part 8 that are applied to the wearer's front, back, and crotch parts, respectively. Here, an example in which the exterior material 2 is integrally formed across the front part 6, the rear part 7 and the crotch part 8 has been shown, but the exterior material 2 is divided into a front part and a rear part at the crotch part. And may be configured as separate members.

外装材２の前部６の左右の縁部６ａと後部７の左右の縁部７ａとは、互いに向き合った状態で所定の接合手段により接合され、これによって左右のサイド接合部９が形成されている。このため、この吸収性物品１は、ウエスト用開口部１１と、左右の脚用開口部１２Ｌ，１２Ｒを有するパンツ型の構成を有している。サイド接合部９の接合手段としては、超音波溶着、加熱溶着、接着剤（例えば、ホットメルト接着剤）による接着等のいずれか一つ又はそれの複数の組み合わせ等により行われる。   The left and right edge portions 6a of the front portion 6 of the exterior material 2 and the left and right edge portions 7a of the rear portion 7 are joined to each other by a predetermined joining means so as to face each other, thereby forming the left and right side joint portions 9. Yes. For this reason, this absorbent article 1 has a pants-type configuration having a waist opening 11 and left and right leg openings 12L, 12R. As a joining means of the side joining part 9, it is performed by any one of ultrasonic welding, heat welding, adhesion by an adhesive (for example, hot melt adhesive), or a combination thereof.

吸収部材３は、外装材２のほぼ股部８に対応する部分の肌面側にホットメルト接着剤を用いて接合されている。このホットメルト接着剤の塗布形態については、後に詳述する。なお、変形例として吸収部材３の前後の端縁部の上から押さえシートを外装材２の肌面側に貼着するようにしてもよい。   The absorbent member 3 is bonded to the skin surface side of a portion corresponding to the crotch portion 8 of the exterior material 2 by using a hot melt adhesive. The application form of this hot melt adhesive will be described in detail later. As a modification, the pressing sheet may be attached to the skin surface side of the exterior material 2 from the front and back edge portions of the absorbent member 3.

外装材２の前部６の上縁部には、その上縁部に沿ってウエスト用弾性部材１６が伸張された状態で付与されている。また、後部７の上縁部には、その上縁部に沿ってウエスト用弾性部材１７が伸張された状態で付与されている。また、股部８の脚用開口部１２Ｌ，１２Ｒを形成する左右の縁部には、その縁部に沿って脚用弾性部材１８，１９が伸張された状態で付与されている。また、前部６の左右の着用者の胴周りに位置する部分（前部６の縦方向Ｙの中間部）には、横方向Ｘに沿ってボディ用弾性部材２０が伸張された状態で付与されている。また、後部７における着用者の胴周りに位置する部分（後部７の縦方向Ｙの中間部）には、横方向Ｘに沿ってボディ用弾性部材２１が伸張された状態で付与されている。   A waist elastic member 16 is applied to the upper edge portion of the front portion 6 of the exterior material 2 along the upper edge portion. Moreover, the elastic member 17 for waist is provided to the upper edge part of the rear part 7 along the upper edge part. Further, the leg elastic members 18 and 19 are provided to the left and right edges forming the leg openings 12L and 12R of the crotch part 8 along the edges. Further, the body elastic member 20 is provided in a stretched state along the lateral direction X on the portion of the front portion 6 located around the waist of the left and right wearers (the middle portion of the front portion 6 in the longitudinal direction Y). Has been. Further, the body elastic member 21 is provided in a stretched state along the lateral direction X at a portion (an intermediate portion of the rear portion 7 in the longitudinal direction Y) located around the waist of the wearer in the rear portion 7.

外装材２は、不織布からなる２枚のシート材２６,２７（図３参照）の間に、弾性部材１６〜２１を挟み込んで構成されている。シート材２６，２７同士の接合及び弾性部材１６〜２１のシート材２６，２７への接合は、接着剤（例えば、ホットメルト接着剤）、熱溶着、超音波溶着等の接合手段を用いて行われる。なお、本実施形態では両シート材２６，２７は同じ平面形状を有しているが、互いに異なる平面形状としてもよい。また、本実施形態ではシート材２６，２７の少なくともいずれか一方は撥水性のものを使用しているが、両シート材２６，２７ともに親水性ものを使用してもよい。   The exterior material 2 is configured by sandwiching elastic members 16 to 21 between two sheet materials 26 and 27 (see FIG. 3) made of nonwoven fabric. The joining of the sheet materials 26 and 27 and the joining of the elastic members 16 to 21 to the sheet materials 26 and 27 are performed using joining means such as an adhesive (for example, hot melt adhesive), thermal welding, ultrasonic welding, and the like. Is called. In this embodiment, both the sheet materials 26 and 27 have the same planar shape, but may have different planar shapes. In this embodiment, at least one of the sheet materials 26 and 27 is water-repellent, but both the sheet materials 26 and 27 may be hydrophilic.

吸収部材３は、着用者の***物を吸収する吸収体３１が備えられた本体部３２と、その本体部３２に設けられた左右の起立部３３とを備えて構成されている。本体部３２は、吸収体３１を図示しない撥水性又は不透液性のバックシートと透液性のトップシートとによって挟み込んで構成されている。起立部３３の自由端部には１又は複数の起立用弾性部材３４が伸張された状態で付与されており、この起立用弾性部材３４の収縮力によって、起立部３３が着用者の肌面側に立ち上がり、肌面にフィットするようになっている。   The absorbent member 3 includes a main body portion 32 provided with an absorber 31 that absorbs the excrement of the wearer, and left and right standing portions 33 provided on the main body portion 32. The main body 32 is configured by sandwiching the absorber 31 between a water-repellent or liquid-impervious back sheet (not shown) and a liquid-permeable top sheet. One or more standing elastic members 34 are provided in an extended state on the free end of the standing portion 33, and the standing portion 33 is attached to the skin surface of the wearer by the contraction force of the standing elastic member 34. Stand up to fit your skin.

また、この吸収性物品１では、脚用弾性部材１８，１９は外装材２の左右の脚周り部２ａから股下部８ａにかけて連続的に付与された後、弾性部材１８，１９の股下部８ａに位置する部分にて、弾性部材１８，１９を短く切断して弱化させる弱化処理が施されている。このように、弾性部材１８，１９の股下部８ａに付与された部分が弱化されているので、弾性部材１８，１９の締め付けが強すぎて着用感が損なわれたり、弾性部材１８，１９の収縮により吸収部材３の吸収体３１によじれが生じる等の不都合を回避できるようになっている。   In the absorbent article 1, the leg elastic members 18, 19 are continuously applied from the left and right leg surrounding parts 2 a to the crotch 8 a of the exterior material 2, and then applied to the crotch 8 a of the elastic members 18, 19. A weakening process is performed in which the elastic members 18 and 19 are cut short and weakened at the positions. Thus, since the part provided to the crotch part 8a of the elastic members 18 and 19 is weakened, the tightening of the elastic members 18 and 19 is too strong, and the wearing feeling is impaired, or the elastic members 18 and 19 are contracted. Therefore, inconveniences such as kinking of the absorbent body 31 of the absorbent member 3 can be avoided.

図４は、外装材２と吸収部材３とを接合するホットメルト接着剤の塗工部の構成を示す図である。なおこの図４では、図示の便宜上、弾性部材１６〜２１等を省略している（後述の図１０につていも同様）。   FIG. 4 is a diagram illustrating a configuration of a hot melt adhesive coating portion that joins the exterior material 2 and the absorbing member 3. In FIG. 4, the elastic members 16 to 21 and the like are omitted for convenience of illustration (the same applies to FIG. 10 described later).

本実施形態では、図４に示すように、外装材２及び吸収部材３の両対向面のうちのいずれか一方（例えば、外装材２の吸収部材３との対向面）に、この吸収性物品１を略平面状に展開したときに略横方向Ｘに沿って延びる筋状にホットメルト接着剤が塗布されてなる複数の筋状塗布部４１が設けられ、この複数の筋状塗布部４１によって吸収部材３が外装材２に接合されている。このようにホットメルト接着剤を筋状に間欠塗布することにより、吸収性物品１の柔軟性（肌に対する風合い）及び通気性等が向上するようになっている。   In this embodiment, as shown in FIG. 4, this absorbent article is provided on either one of the opposing surfaces of the exterior material 2 and the absorbent member 3 (for example, the opposing surface of the exterior material 2 to the absorbent member 3). A plurality of streaked application portions 41 are provided in which a hot melt adhesive is applied in a streak shape extending substantially along the lateral direction X when 1 is developed in a substantially planar shape. The absorbing member 3 is joined to the exterior material 2. As described above, by intermittently applying the hot melt adhesive in a streak shape, the flexibility (feel to the skin), the air permeability, and the like of the absorbent article 1 are improved.

このようなストライプ状に設けられた複数の筋状塗布部４１の縦方向Ｙに沿った各幅のうち、股下部８ａに位置する筋状塗布部４１の幅が最も大きく設定されている。より具体的には、複数の筋状塗布部４１の縦方向Ｙに沿った各幅は、吸収部材３の前後の縁部側から股下側にいくに従って段階的に大きくなっている。図５（ａ）は前後の端縁部の筋状塗布部４１の構成を示す図であり、図５（ｂ）は股下部８ａの筋状塗布部４１の構成を示す図である。前後の端縁部における筋状塗布部４１の縦方向Ｙの幅Ｗａの最小値は、例えば約０．５〜約５ｍｍの範囲内（具体的な数値例としては、例えば約１ｍｍ）に設定され、股下部８ａにおける筋状塗布部４１の縦方向Ｙの幅Ｗａの最大値は、例えば約３０〜約１３０ｍｍの範囲内（具体的な数値例としては、例えば約５０ｍｍ）に設定される。また、縦方向Ｙに沿った各筋状塗布部４１間の隙間部の幅Ｗｂは、例えば約０．５〜約１０ｍｍの範囲内で一定の値（具体的な数値例としては、例えば約１ｍｍ）に設定される。なお、変形例として、各筋状塗布部４１間の隙間部の幅Ｗｂを吸収性物品１内の場所によって変化させるようにしてもよい。また、吸収部材３の前後の端縁部については、剥離防止等のために例外的に、幅広の塗布幅でホットメルト接着剤が塗布されるようにしてもよい。   Of the respective widths along the longitudinal direction Y of the plurality of streaked application portions 41 provided in such a stripe shape, the width of the streaked application portion 41 located in the crotch 8a is set to be the largest. More specifically, each width along the longitudinal direction Y of the plurality of streaky application portions 41 increases stepwise from the front and rear edge sides of the absorbent member 3 toward the crotch side. FIG. 5A is a diagram showing the configuration of the streaky application portion 41 at the front and rear edge portions, and FIG. 5B is a diagram showing the configuration of the streaked application portion 41 of the crotch 8a. The minimum value of the width Wa in the longitudinal direction Y of the streaked application portion 41 at the front and rear edge portions is set, for example, within a range of about 0.5 to about 5 mm (a specific numerical example is, for example, about 1 mm). The maximum value of the width Wa in the longitudinal direction Y of the streaked application part 41 in the crotch part 8a is set within a range of, for example, about 30 to about 130 mm (a specific numerical example is, for example, about 50 mm). Further, the width Wb of the gap between the streaky application portions 41 along the vertical direction Y is a constant value within a range of about 0.5 to about 10 mm, for example (as a specific numerical example, for example, about 1 mm). ). As a modification, the width Wb of the gap between the streaky application portions 41 may be changed depending on the location in the absorbent article 1. In addition, the front and rear edge portions of the absorbent member 3 may be exceptionally coated with a hot melt adhesive with a wide application width in order to prevent peeling.

また、本実施形態では、図６に示すように、複数の筋状塗布部４１のうちの股下部８ａに位置する筋状塗布部４１が、脚用弾性部材１８，１９が短く切断されている外装材２の領域の少なくとも一部（好ましくは全域）を覆っている。   Further, in the present embodiment, as shown in FIG. 6, the leg-shaped elastic members 18 and 19 are cut short in the streaky application part 41 located in the crotch part 8 a of the plurality of streak application parts 41. At least a part (preferably the entire region) of the region of the exterior material 2 is covered.

ここで、脚用弾性部材１８，１９の切断処理について説明する。脚用弾性部材１８，１９の切断処理は、図７に示すように、前工程で形成された外装材連続体５１に対して行われる。この外装材連続体５１は、外装材２を構成するための材料が吸収性物品１を基準として横方向Ｘに連続的に連なってなるものであり、シート材２６，２７の連続体の間に、弾性部材１６〜２１が連続的に連なった状態で挟み込まれて構成されている。具体的には、例えば図７に示すように、カッターとして機能する刃ロール５２とアンビルロール５３との間に、所定の搬送方向Ｂ１に搬送される外装材連続体５１の股下部８ａに対応する部分を通すことにより行われる。ロール５２の外周には複数の刃５２ａが設けられており、外装材連続体５１の通過に伴ってその刃５２ａが外装材連続体５１に当てられ、外装材連続体５１の股下部８ａに対応する部分に付与された弾性部材１８，１９が、刃ロール５２の刃５２ａにより短く切断されて弱化される。なお、弾性部材１８，１９の切断は刃ロール５２等を用いた構成に限らず、外装材２の弾性部材１８，１９が付与された部分を加圧部により加圧して切断するようにしてもよい。   Here, the cutting process of the leg elastic members 18, 19 will be described. As shown in FIG. 7, the leg elastic members 18 and 19 are cut on the exterior material continuum 51 formed in the previous step. The exterior material continuum 51 is a material in which the material for constituting the exterior material 2 is continuously continuous in the lateral direction X with reference to the absorbent article 1, and between the continuums of the sheet materials 26 and 27. The elastic members 16 to 21 are sandwiched in a continuous state. Specifically, for example, as shown in FIG. 7, between the blade roll 52 and the anvil roll 53 that function as a cutter, it corresponds to the crotch 8a of the exterior material continuum 51 that is conveyed in a predetermined conveyance direction B1. This is done by passing the part. A plurality of blades 52 a are provided on the outer periphery of the roll 52, and the blades 52 a are applied to the exterior material continuous body 51 as the exterior material continuous body 51 passes, and correspond to the crotch 8 a of the exterior material continuous body 51. The elastic members 18 and 19 applied to the portion to be cut are cut short by the blade 52a of the blade roll 52 and weakened. The cutting of the elastic members 18 and 19 is not limited to the configuration using the blade roll 52 and the like, but the portion to which the elastic members 18 and 19 of the exterior material 2 are applied may be pressed and cut by the pressing unit. Good.

このような脚用弾性部材１８，１９に対する切断処理により、弾性部材１８，１９の切断処理が施された外装材２の領域では、刃ロール５２の刃５２ａが外装材２に当てられるため、小さな亀裂や孔等が生じ、防水性能が低下する。   Since the blade 52 a of the blade roll 52 is applied to the exterior material 2 in the region of the exterior material 2 where the elastic member 18, 19 has been subjected to the cutting process on the leg elastic members 18, 19, it is small. Cracks, holes, etc. occur and the waterproof performance decreases.

そこで、本実施形態では、脚用弾性部材１８，１９が短く切断されている外装材２の領域の少なくとも一部（好ましくは全域）を、股下部８ａに位置する筋状塗布部４１で覆うことによって、弾性部材１８，１９が切断された外装材２の領域での防水を図っている。   Therefore, in the present embodiment, at least a part (preferably the entire region) of the exterior material 2 where the leg elastic members 18 and 19 are cut short is covered with the streaky application part 41 located in the crotch 8a. Thus, waterproofing is achieved in the region of the exterior material 2 where the elastic members 18 and 19 are cut.

次に、筋状塗布部４１へのホットメルト接着剤の塗布工程について説明する。筋状塗布部４１へのホットメルト接着剤の塗布は、接触塗布方式により行われる。この接触塗布方式では、図８に示すように、所定の搬送方向Ｂ２に搬送される塗布対象５５（本実施形態では、外装材２又は吸収部材３）の塗布面に実質的に接触した塗工部としての塗工ヘッド部５６により塗布が行われる。なお、この「塗布面に塗工ヘッド部５６が実質的に接触する」とは、塗工ヘッド部５６が塗布面に接触した状態でホットメルト接着剤５７が塗布される状態と、塗工ヘッド部５６と塗布面にわずかな隙間が空けられた状態でホットメルト接着剤５７が塗布される状態とを含む概念である。   Next, the application process of the hot melt adhesive to the streaky application part 41 will be described. Application | coating of the hot-melt-adhesive to the stripe-shaped application part 41 is performed by a contact application system. In this contact coating method, as shown in FIG. 8, the coating substantially contacts the coating surface of the coating object 55 (in this embodiment, the exterior material 2 or the absorbing member 3) transported in a predetermined transport direction B2. Application is performed by a coating head portion 56 as a portion. Note that “the coating head portion 56 substantially contacts the application surface” means that the hot melt adhesive 57 is applied in a state where the coating head portion 56 is in contact with the application surface, and the coating head. This is a concept including a state in which the hot melt adhesive 57 is applied in a state where a slight gap is left between the portion 56 and the application surface.

塗工ヘッド部５６内に形成されたホットメルト接着の流路内には、図９に示すような櫛刃状部材５８が挟み込まれている。この櫛刃状部材５８には、筋状塗布部４１のパターン（塗布幅、隙間間隔及びそれらの分布等）に対応した複数のスリット５８ａが設けられている。所定の供給管路等を介して塗工ヘッド部５６内に供給されたホットメルト接着剤５７は、櫛刃状部材５８のスリット５８ａ内に導入され、塗工ヘッド部５６の先端部にて各スリット５８ａの下端から塗布面上に押し出されて筋状に塗布される。例えば筋状塗布部４１のパターンの変更は、櫛刃状部材５８の種類等を交換することにより簡単に行えるようになっている。   A comb blade member 58 as shown in FIG. 9 is sandwiched in the hot melt bonding flow path formed in the coating head portion 56. The comb blade member 58 is provided with a plurality of slits 58a corresponding to the pattern (application width, gap interval, distribution thereof, and the like) of the streaky application portion 41. The hot melt adhesive 57 supplied into the coating head portion 56 via a predetermined supply pipe or the like is introduced into the slit 58 a of the comb blade member 58 and is applied to the tip of the coating head portion 56. It is extruded from the lower end of the slit 58a onto the application surface and applied in a streak shape. For example, the pattern of the streaky application portion 41 can be easily changed by exchanging the type of the comb blade member 58 or the like.

以上のように、本実施形態によれば、外装材２と吸収部材３とを接合するホットメルト接着剤が塗布された複数の筋状塗布部４１の縦方向Ｙに沿った各幅のうち、股下部８ａに位置する筋状塗布部４１の幅が最も大きく設定されている。より具体的には、その複数の筋状塗布部４１の縦方向Ｙに沿った各幅は、吸収部材３の前後の縁部側から股下側にいくに従って段階的に大きくなるように設定されている。それ故、着座時等に体重がかかりやすく漏れ等が生じやすい股下部８ａの近くに位置する部分ほどホットメルト接着剤の筋状塗布部４１の塗布幅を大きくすることにより、吸収性物品１の柔軟性及び通気性等を保持しつつ、股下部８ａ及びその周辺にて尿等が吸収部材３から外装材２側に漏れ出すのを接着剤の筋状塗布部４１によって効果的に遮ることができる。   As described above, according to the present embodiment, among the widths along the vertical direction Y of the plurality of streaky application portions 41 to which the hot melt adhesive that joins the exterior material 2 and the absorbing member 3 is applied, The width | variety of the stripe-shaped application part 41 located in the crotch part 8a is set to the largest. More specifically, each width along the longitudinal direction Y of the plurality of streaked application portions 41 is set so as to increase stepwise from the front and rear edge sides of the absorbent member 3 toward the crotch side. Yes. Therefore, by increasing the application width of the streaky application part 41 of the hot melt adhesive toward the part located near the crotch part 8a where it is easy to put on weight when sitting or the like is likely to leak, the absorbent article 1 of the absorbent article 1 is increased. It is possible to effectively block urine and the like from leaking from the absorbent member 3 to the exterior material 2 side at the crotch 8a and its periphery by the adhesive streaky application portion 41 while maintaining flexibility and breathability. it can.

また、外装材２と吸収部材３とを接合するホットメルト接着剤が接触塗布方式により塗布されるため、スパイラルスプレー塗布方式等のように塗布処理時にホットメルト接着剤が飛散して製品や製造ラインの不必要な部分に付着して、製品の品質が低下したり、製造ラインのメンテナンスの負荷が増大するのを防止することができる。   In addition, since the hot melt adhesive that joins the exterior material 2 and the absorbing member 3 is applied by a contact coating method, the hot melt adhesive is scattered during the coating process as in the spiral spray coating method or the like. Therefore, it is possible to prevent the quality of the product from being deteriorated and the maintenance load of the production line from increasing.

また、筋状塗布部４１のパターン（塗布幅、隙間間隔及びそれらの分布等）は、例えば塗工ヘッド部５６のストライプ状の塗布パターンを規定するための櫛刃状部材５８等を交換するだけで容易に変更することができるため、筋状塗布部４１のパターンの変更等に容易に対応することができる。   Further, the pattern (application width, gap interval, and distribution thereof, etc.) of the streaky application part 41 is obtained only by replacing the comb blade member 58 for defining the stripe-like application pattern of the coating head part 56, for example. Therefore, it is possible to easily cope with a change in the pattern of the streaky application portion 41 and the like.

また、脚用弾性部材１８，１９の股下部８ａに付与された部分が短く切断されて弱化されているため、脚用弾性部材１８，１９の締め付けが強すぎて着用感が損なわれたり、脚用弾性部材１８，１９の収縮により吸収部材３の吸収体３１によじれが生じる等の不都合を回避できる。   In addition, since the portions of the leg elastic members 18 and 19 that are attached to the crotch part 8a are cut short and weakened, the leg elastic members 18 and 19 are tightened too much, and the feeling of wearing is impaired. Inconveniences such as the occurrence of kinking by the absorber 31 of the absorbing member 3 due to the contraction of the elastic members 18 and 19 can be avoided.

また、複数の筋状塗布部４１のうちの股下部８ａに位置する筋状塗布部４１が、脚用弾性部材１８，１９が短く切断されている外装材２の領域の少なくとも一部を覆っている。それ故、脚用弾性部材１８，１９の切断処理が施された外装材２の部分の防水性能が低下している場合であっても、その部分に設けらたホットメルト接着剤の筋状塗布部４１により、脚用弾性部材１８，１９が切断された外装材２の部分を介して尿等が外部に漏れるのを抑制できる。   Further, the streak applicator 41 located in the crotch part 8a among the plurality of streak applicators 41 covers at least a part of the region of the exterior material 2 where the leg elastic members 18, 19 are cut short. Yes. Therefore, even if the waterproof performance of the portion of the exterior material 2 that has been subjected to the cutting treatment of the leg elastic members 18 and 19 is deteriorated, the streaky application of the hot melt adhesive provided on the portion is performed. The portion 41 can prevent urine and the like from leaking outside through the portion of the exterior material 2 from which the leg elastic members 18 and 19 are cut.

［第２実施形態］
図１０は本発明の第２実施形態に係る吸収性物品における外装材と吸収部材とを接合するホットメルト接着剤の塗工部の構成を示す図であり、図１１は図１０の吸収性物品の股下部の断面構成を模式的に示す図である。本実施形態に係る吸収性物品１ａが上述の第１実施形態に係る吸収性物品１と実質的に異なる点は、外装材２と吸収部材３とを接合するためのホットメルト接着剤の塗布形態のみであり、互いに対応する部分には同一の参照符号を伏して説明の重複を回避する。 [Second Embodiment]
FIG. 10 is a view showing a configuration of a hot melt adhesive coating portion for joining an exterior material and an absorbent member in an absorbent article according to the second embodiment of the present invention, and FIG. 11 is an absorbent article shown in FIG. It is a figure which shows typically the cross-sectional structure of this crotch part. The point that the absorbent article 1a according to the present embodiment is substantially different from the absorbent article 1 according to the first embodiment described above is that a hot melt adhesive is applied to join the exterior material 2 and the absorbent member 3 together. In other words, the same reference numerals are used for parts corresponding to each other to avoid redundant description.

本実施形態では、図１０及び図１１に示すように、ホットメルト接着剤が筋状に塗布された複数の筋状塗布部６１と、ホットメルト接着剤が股下部８ａにて面状に塗布された１つの面状塗布部６２とによって、外装材２と吸収部材３とが接合さている。   In the present embodiment, as shown in FIGS. 10 and 11, a plurality of streaked application portions 61 to which the hot melt adhesive is applied in a streak manner and the hot melt adhesive are applied in a planar shape at the crotch portion 8a. The exterior material 2 and the absorbing member 3 are joined together by the single planar application portion 62.

複数の筋状塗布部６１は、この吸収性物品１を略平面状に展開したときに略横方向Ｘに沿って延びる筋状にホットメルト接着剤が塗布されて形成されている。この筋状塗布部６１へのホットメルト接着剤の塗布は、第１実施形態の筋状塗布部４１の場合と同様に接触塗布方式により行われる。このようにホットメルト接着剤を筋状に間欠塗布することにより、吸収性物品１ａの柔軟性（肌に対する風合い）及び通気性等が向上するようになっている。   The plurality of streaky application portions 61 are formed by applying a hot melt adhesive in a streak shape extending along the substantially horizontal direction X when the absorbent article 1 is developed in a substantially planar shape. The hot melt adhesive is applied to the streaky application portion 61 by the contact application method in the same manner as the streaky application portion 41 of the first embodiment. Thus, by applying the hot melt adhesive intermittently in a streak shape, the flexibility (feel to the skin), the air permeability and the like of the absorbent article 1a are improved.

より詳細には、複数の筋状塗布部６１の塗布幅及びそれの間隔は、吸収部材３の縦方向Ｙの全域においてほぼ一定に設定されている。例えば、筋状塗布部６１の縦方向Ｙの塗布幅は、例えば約０．５〜約５ｍｍの範囲内（具体的な数値例としては、例えば約１ｍｍ）に設定され、筋状塗布部６１間の間隔は、例えば約０．５〜約１０ｍｍの範囲内（具体的な数値例としては、例えば約１ｍｍ）に設定されている。なお、変形例として、筋状塗布部６１の塗布幅及び間隔を吸収性物品１内の場所によって変化させるようにしてもよい。例えば、吸収部材３の前後の端縁部については、剥離防止等のために例外的に、幅広の塗布幅でホットメルト接着剤が塗布されるようにしてもよい。   More specifically, the application width and the interval between the plurality of streaky application portions 61 are set to be substantially constant throughout the longitudinal direction Y of the absorbing member 3. For example, the application width in the vertical direction Y of the streak applicator 61 is set, for example, within a range of about 0.5 to about 5 mm (as a specific numerical example, for example, about 1 mm). Is set within a range of, for example, about 0.5 to about 10 mm (as a specific numerical example, for example, about 1 mm). As a modification, the application width and interval of the streaky application part 61 may be changed depending on the location in the absorbent article 1. For example, the hot melt adhesive may be applied to the front and rear edge portions of the absorbent member 3 with a wide application width, in order to prevent peeling.

また、本実施形態では、複数の筋状塗布部６１を横方向Ｘに沿って延びるように形成したが、変形例として、複数の筋状塗布部６１を縦方向Ｙに沿って延びるように形成してもよい。   Further, in the present embodiment, the plurality of streaked application portions 61 are formed so as to extend along the horizontal direction X, but as a modification, the plurality of streaky application portions 61 are formed so as to extend along the vertical direction Y. May be.

また、面状塗布部６２は、外装材２及び吸収部材３の両対向面のうちのいずれか他方（例えば、吸収部材３の外装材２との対向面）における股下部８ａの少なくとも一部に、ホットメルト接着剤が面状に塗布されて形成されている。この面状塗布部６２へのホットメルト接着剤の塗布については、第１実施形態の筋状塗布部４１の場合と同様な接触塗布方式を採用してもよく、他の塗布方式を採用してもよい。   Further, the planar application portion 62 is formed on at least a part of the crotch portion 8a on the other of the facing surfaces of the exterior material 2 and the absorbing member 3 (for example, the facing surface of the absorbing member 3 facing the exterior material 2). The hot melt adhesive is applied to the surface. For the application of the hot melt adhesive to the planar application part 62, the same contact application method as that of the streaky application part 41 of the first embodiment may be adopted, or other application methods may be adopted. Also good.

また、この面状塗布部６２は、股下部８ａの防水性能の向上を図るべく、図１２に示すように、脚用弾性部材１８，１９が短く切断されている外装材２の領域の少なくとも一部を覆うように形成されているとともに、塗布されるホットメルト接着剤として吸水性樹脂を含有したものが用いられている。   In addition, the planar application portion 62 has at least one region of the exterior material 2 where the leg elastic members 18 and 19 are cut short, as shown in FIG. 12, in order to improve the waterproof performance of the crotch 8a. It is formed so as to cover the portion, and a hot melt adhesive to be applied includes a water absorbent resin.

ここで、面状塗布部６２の形状及び寸法等について具体例を挙げて説明する。面状塗布部６２は、略四角状（正方形及び長方形を含む）の平面形状を有し、縦方向Ｙ及び横方向Ｘに沿った各辺の寸法（長さ）が、約３０〜約１３０ｍｍの範囲内のいずれかの値、より好ましくは、約６０〜約１００ｍｍの範囲内のいずれかの値に設定される。あるいは、面状塗布部６２の形成位置及び寸法を、面状塗布部６２が脚用弾性部材１８，１９が短く切断されている外装材２の領域の全域を完全に覆うように（あるいは、ほぼ全域を覆うように）設定するようにしてもよい。   Here, the shape and dimensions of the planar application unit 62 will be described with specific examples. The planar application part 62 has a substantially square (including square and rectangular) planar shape, and the dimension (length) of each side along the vertical direction Y and the horizontal direction X is about 30 to about 130 mm. It is set to any value within the range, more preferably any value within the range of about 60 to about 100 mm. Alternatively, the formation position and dimensions of the planar application portion 62 are set so that the planar application portion 62 completely covers the entire region of the exterior material 2 where the leg elastic members 18 and 19 are cut short (or substantially). You may make it set so that the whole region may be covered.

以上のように、本実施形態によれば、外装材及２び吸収部材３の対向面のほぼ全域に、ホットメルト接着剤が筋状に塗布された複数の筋状塗布部６１が設けられ、着座時等に体重がかかりやすく漏れ等が生じやすい股下部８ａについては、その筋状塗布部６１に加えてホットメルト接着剤が面状に塗布された面状塗布部６２が追加された構成である。それ故、全体的なホットメルト接着剤の塗布面積や塗布量を抑制して吸収性物品１の柔軟性（肌に対する風合い）及び通気性等を維持しつつ、股下部８ａにおいて尿等が吸収部材３から外装材２側に漏れ出すのを効果的に遮ることができる。特に、外装材２及び吸収部材３の両対向面における股下部８ａ以外の部分については、ホットメルト接着剤を筋状の間欠塗工する構成であるため、良好な通気性等が得られる。   As described above, according to the present embodiment, a plurality of streaked application portions 61 each having a hot melt adhesive applied in a streak shape are provided in almost the entire area of the facing surface of the exterior material and the absorbing member 3. The crotch part 8a, which is likely to take weight when sitting or the like and easily leaks, has a configuration in which a sheet-like application part 62 to which a hot-melt adhesive is applied in addition to the stripe-like application part 61 is added. is there. Therefore, urine or the like is absorbed in the crotch part 8a while maintaining the flexibility (texture to the skin) and breathability of the absorbent article 1 by suppressing the overall application area and application amount of the hot melt adhesive. 3 can be effectively blocked from leaking to the exterior material 2 side. In particular, the portions other than the crotch portion 8a on both facing surfaces of the exterior material 2 and the absorbing member 3 are configured to intermittently apply the hot melt adhesive in a streaky manner, so that good air permeability and the like are obtained.

また、筋状塗布部６１についてはホットメルト接着剤が接触塗布方式により塗布されるため、スパイラルスプレー塗布方式等のように塗布処理時にホットメルト接着剤が飛散して製品や製造ラインの不必要な部分に付着して、製品の品質が低下したり、製造ラインのメンテナンスの負荷が増大するのを防止することができる。   In addition, since the hot melt adhesive is applied to the streaky application portion 61 by the contact application method, the hot melt adhesive is scattered during the application process as in the spiral spray application method, so that the product and the production line are unnecessary. It is possible to prevent the quality of the product from deteriorating and increasing the maintenance load of the production line from adhering to the part.

また、筋状塗布部６１のパターン（塗布幅、隙間間隔及びそれらの分布等）は、例えば塗工ヘッド部のストライプ状の塗布パターンを規定するための櫛刃状部材等を交換するだけで容易に変更することができるため、筋状塗布部６１のパターンの変更等に容易に対応することができる。   Further, the pattern (application width, gap interval, and distribution thereof) of the streaky application part 61 can be easily achieved by simply replacing a comb blade-like member for defining a stripe-like application pattern of the application head part, for example. Therefore, it is possible to easily cope with a change in the pattern of the streaky application portion 61 and the like.

また、脚用弾性部材１８，１９の股下部８ａに付与された部分が短く切断されて弱化されているため、脚用弾性部材１８，１９の締め付けが強すぎて着用感が損なわれたり、脚用弾性部材１８，１９の収縮により吸収部材３の吸収体３１によじれが生じる等の不都合を回避できる。   In addition, since the portions of the leg elastic members 18 and 19 that are attached to the crotch part 8a are cut short and weakened, the leg elastic members 18 and 19 are tightened too much, and the feeling of wearing is impaired. Inconveniences such as the occurrence of kinking by the absorber 31 of the absorbing member 3 due to the contraction of the elastic members 18 and 19 can be avoided.

また、面状塗布部６２が、脚用弾性部材１８，１９が短く切断されている外装材２の領域の少なくとも一部を覆っている。それ故、脚用弾性部材１８，１９の切断処理が施された外装材２の部分の防水性能が低下している場合であっても、その部分に設けらたホットメルト接着剤の面状塗布部６２により、脚用弾性部材１８，１９が切断された外装材２の部分を介して尿等が外部に漏れるのを抑制できる。   Further, the planar application portion 62 covers at least a part of the region of the exterior material 2 where the leg elastic members 18 and 19 are cut short. Therefore, even if the waterproof performance of the portion of the exterior material 2 that has been subjected to the cutting treatment of the leg elastic members 18 and 19 is deteriorated, the surface application of the hot melt adhesive provided in the portion is performed. The portion 62 can prevent urine and the like from leaking outside through the portion of the exterior material 2 from which the leg elastic members 18, 19 are cut.

また、外装材２と吸収部材３との対向面における股下部８ａに設けられる面状塗布部６２には、吸水性樹脂を含有したホットメルト接着剤が塗布されるため、面状塗布部６２に塗布されたホットメルト接着剤に吸収部材３から漏れ出した尿等を吸収させることができ、その結果、吸収部材３から漏れ出した尿等が外装材２の股下部８ａから外部に漏れ出すのをより確実に防止できる。   In addition, since the hot melt adhesive containing a water-absorbing resin is applied to the planar application portion 62 provided on the crotch portion 8a on the facing surface of the exterior material 2 and the absorbing member 3, the planar application portion 62 is provided with a hot-melt adhesive. The applied hot melt adhesive can absorb the urine leaked from the absorbent member 3, and as a result, the urine leaked from the absorbent member 3 leaks outside from the crotch 8a of the exterior material 2. Can be prevented more reliably.

また、吸水樹脂を含有したホットメルト接着剤は股下部８ａのみの使用で済みため、吸収性物品１の製造コストを抑制できる。   Moreover, since the hot-melt adhesive containing a water-absorbing resin only requires the use of the crotch part 8a, the manufacturing cost of the absorbent article 1 can be suppressed.

なお、上述の第１及び第２実施形態に係る吸収性物品１，１ａはパンツ型のものであるが、上述の各実施形態に係る技術をテープ型の使い捨ておむつに適用してもよく、あるいはパンツ・おむつ共用型の使い捨て吸収性物品に適用してもよい。なお、パンツ・おむつ共用型の使い捨て吸収性物品とは、腰周りの部分を破断するための破断部と、破断後の再締結用の締結部材とを有し、破断部を破断しないときはパンツ型の構成となり、破断部を破断したときはテープ型の構成となるものをいう。   In addition, although the absorbent articles 1 and 1a which concern on the above-mentioned 1st and 2nd embodiment are things of a pants type, you may apply the technique which concerns on each above-mentioned embodiment to a tape-type disposable diaper, or The present invention may be applied to a pants / diaper shared disposable absorbent article. Note that the disposable pants / diaper disposable absorbent article has a rupture portion for breaking the waist circumference portion and a fastening member for re-fastening after rupture. It becomes a structure of a mold, and when it breaks a broken portion, it means a structure of a tape mold.

本発明の第１実施形態に係る使い捨て吸収性物品の正面図である。It is a front view of the disposable absorbent article which concerns on 1st Embodiment of this invention. 図１の使い捨て吸収性物品において左右のサイド接合部を展開した状態を示す図である。It is a figure which shows the state which expand | deployed the side junction part on either side in the disposable absorbent article of FIG. 図２のＡ−Ａ線に沿った断面構造を模式的に示す図である。It is a figure which shows typically the cross-sectional structure along the AA line of FIG. 外装材と吸収部材とを接合するホットメルト接着剤の塗工部の構成を示す図である。It is a figure which shows the structure of the application part of the hot-melt-adhesive which joins an exterior material and an absorption member. （ａ）は前後の端縁部の筋状塗布部の構成を示す図であり、（ｂ）は股下部の筋状塗布部の構成を示す図である。(A) is a figure which shows the structure of the stripe application part of the front-and-back edge part, (b) is a figure which shows the structure of the stripe application part of a crotch part. 図４の股下部の構成を拡大して示す図である。It is a figure which expands and shows the structure of the crotch part of FIG. 脚用弾性部材の切断工程を示す図である。It is a figure which shows the cutting process of the elastic member for legs. ホットメルト接着剤を塗布する塗工ヘッド部の断面構成及びそれによる塗布工程を示す図である。It is a figure which shows the cross-sectional structure of the coating head part which apply | coats a hot-melt-adhesive, and the application | coating process by it. 図８の塗工ヘッド部に備えられる櫛刃状部材の要部構成を示す図である。It is a figure which shows the principal part structure of the comb-tooth shaped member with which the coating head part of FIG. 8 is equipped. 本発明の第２実施形態に係る使い捨て吸収性物品における外装材と吸収部材とを接合するホットメルト接着剤の塗工部の構成を示す図である。It is a figure which shows the structure of the coating part of the hot-melt-adhesive which joins the exterior material and absorption member in the disposable absorbent article which concerns on 2nd Embodiment of this invention. 図１０の使い捨て吸収性物品の股下部の断面構成を模式的に示す図である。It is a figure which shows typically the cross-sectional structure of the crotch part of the disposable absorbent article of FIG. 図１０の股下部の構成を拡大して示す図である。It is a figure which expands and shows the structure of the crotch part of FIG.

符号の説明Explanation of symbols

１ 吸収性物品、２ 外装材、２ａ 脚周り部、３ 吸収部材、６ 前部、７ 後部、８ 股部、８ａ 股下部、９ サイド接合部、１１ ウエスト用開口部、１２Ｌ，１２Ｒ 脚用開口部、１６，１７ ウエスト用弾性部材、１８，１９ 脚用弾性部材、２０，２１ ボディ用弾性部材、２６，２７ シート材、３１ 吸収体、３２ 本体部、３３ 起立部、３４ 起立用弾性部材、４１ 筋状塗布部、５１ 外装材連続体、５２ 刃ロール、５３ アンビルロール、５６ 塗工ヘッド部、５７ ホットメルト接着剤、５８ 櫛刃状部材、６１ 筋状塗布部、６２ 面状塗布部。   DESCRIPTION OF SYMBOLS 1 Absorbent article, 2 Exterior material, 2a Leg circumference part, 3 Absorbing member, 6 Front part, 7 Rear part, 8 Crotch part, 8a Crotch lower part, 9 Side joint part, 11 Waist opening part, 12L, 12R Leg opening Part, 16, 17 elastic member for waist, 18, 19 elastic member for leg, 20, 21 elastic member for body, 26, 27 sheet material, 31 absorber, 32 body part, 33 standing part, 34 elastic member for standing, DESCRIPTION OF SYMBOLS 41 Streaky application part, 51 exterior material continuum, 52 blade roll, 53 anvil roll, 56 coating head part, 57 hot melt adhesive, 58 comb blade member, 61 streaky application part, 62 planar application part.

Claims (6)

外装材と、
前記外装材の肌面側に付与され、吸収体を有する吸収部材と、
塗布面に実質的に接触する塗工部によりホットメルト接着剤が塗布される接触塗布方式により、前記外装材及び前記吸収部材の両対向面のうちのいずれか一方に、当該吸収性物品を略平面状に展開したときに略横方向に沿って延びる筋状に前記ホットメルト接着剤が塗布されてなり、前記外装材と前記吸収部材とを接合する複数の筋状塗布部と、
を備え、
前記複数の筋状塗布部の当該吸収性物品の縦方向に沿った各幅のうち、股下部に位置する筋状塗布部の幅が最も大きく設定されていることを特徴とする使い捨て吸収性物品。 An exterior material,
An absorbent member that is applied to the skin side of the exterior material and has an absorber;
The absorptive article is approximately disposed on either one of the facing surfaces of the exterior material and the absorbent member by a contact coating method in which a hot melt adhesive is applied by a coating portion that substantially contacts the coating surface. A plurality of streaked applicators for joining the exterior material and the absorbent member, wherein the hot melt adhesive is applied in a streak shape extending substantially along the horizontal direction when deployed in a planar shape;
With
The disposable absorbent article characterized in that, among the widths of the plurality of streaky application parts along the longitudinal direction of the absorbent article, the width of the streaky application part located at the crotch is set to be the largest. . 請求項１に記載の使い捨て吸収性物品において、
前記複数の筋状塗布部の前記縦方向に沿った各幅は、前後の縁部側から股下側にいくに従って大きくなることを特徴とする使い捨て吸収性物品。 The disposable absorbent article according to claim 1,
The disposable absorbent article, wherein each width along the longitudinal direction of the plurality of streaked application portions increases from the front and rear edge sides toward the crotch side. 請求項１又は請求項２に記載の使い捨て吸収性物品において、
前記外装材の左右の脚周りに位置する脚周り部から前記股下部にかけて付与された脚用弾性部材をさらに備え、
前記脚用弾性部材における前記股下部に付与された部分は、前記外装材に付与された状態で切断されて弱化させており、
前記複数の筋状塗布部のうちの股下部に位置する筋状塗布部が、前記脚用弾性部材が切断されている前記外装材の領域の少なくとも一部を覆っていることを特徴とする使い捨て吸収性物品。 The disposable absorbent article according to claim 1 or 2,
A leg elastic member provided from the leg periphery located around the left and right legs of the exterior material to the crotch part;
A portion of the leg elastic member that is applied to the crotch is cut and weakened in a state of being applied to the exterior material,
Disposable characterized in that the streak-applied portion located at the crotch portion of the plurality of streaked applicators covers at least a part of the region of the exterior material from which the leg elastic member is cut. Absorbent article. 外装材と、
前記外装材の肌面側に付与され、吸収体を有する吸収部材と、
塗布面に実質的に接触する塗工部によりホットメルト接着剤が塗布される接触塗布方式により、前記外装材及び前記吸収部材の両対向面のうちのいずれか一方に、前記ホットメルト接着剤が筋状に塗布されてなり、前記外装材と前記吸収部材とを接合する複数の筋状塗布部と、
前記外装材及び前記吸収部材の両対向面のうちのいずれか他方における股下部の少なくとも一部に、前記ホットメルト接着剤が面状に塗布されてなり、前記外装材と前記吸収部材とを接合する面状塗布部と、
を備えることを特徴とする使い捨て吸収性物品。 An exterior material,
An absorbent member that is applied to the skin side of the exterior material and has an absorber;
The hot melt adhesive is applied to any one of the facing surfaces of the exterior material and the absorbing member by a contact coating method in which a hot melt adhesive is applied by a coating portion that substantially contacts the coating surface. A plurality of streaked application portions that are applied in a streak shape and join the exterior material and the absorbing member;
The hot melt adhesive is applied in a planar shape to at least a part of the crotch portion on either one of the facing surfaces of the exterior material and the absorbent member, and the exterior material and the absorbent member are joined to each other A planar application part to be
A disposable absorbent article comprising: 請求項４に記載の使い捨て吸収性物品において、
前記外装材の左右の脚周りに位置する脚周り部から前記股下部にかけて付与された脚用弾性部材をさらに備え、
前記脚用弾性部材における前記股下部に付与された部分は、前記外装材に付与された状態で切断されて弱化させており、
前記面状塗布部が、前記脚用弾性部材が切断されている前記外装材の領域の少なくとも一部を覆っていることを特徴とする使い捨て吸収性物品。 The disposable absorbent article according to claim 4,
A leg elastic member provided from the leg periphery located around the left and right legs of the exterior material to the crotch part;
A portion of the leg elastic member that is applied to the crotch is cut and weakened in a state of being applied to the exterior material,
The disposable absorbent article, wherein the planar application part covers at least a part of a region of the exterior material from which the leg elastic member is cut. 請求項４又は請求項５に記載の使い捨て吸収性物品において、
前記面状塗布部に塗布される前記ホットメルト接着剤は、吸水性樹脂を含有していることを特徴とする使い捨て吸収性物品。 The disposable absorbent article according to claim 4 or 5,
The disposable absorbent article, wherein the hot melt adhesive applied to the planar application part contains a water-absorbing resin.

Images