JP3783584B2 - Pants-type disposable diapers - Google Patents
Pants-type disposable diapers Download PDFInfo
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- JP3783584B2 JP3783584B2 JP2001214148A JP2001214148A JP3783584B2 JP 3783584 B2 JP3783584 B2 JP 3783584B2 JP 2001214148 A JP2001214148 A JP 2001214148A JP 2001214148 A JP2001214148 A JP 2001214148A JP 3783584 B2 JP3783584 B2 JP 3783584B2
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- type disposable
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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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
- A61F13/4963—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs characterized by the seam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/729—Textile or other fibrous material made from plastics
- B29C66/7294—Non woven mats, e.g. felt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4871—Underwear
- B29L2031/4878—Diapers, napkins
Landscapes
- 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)
- Orthopedics, Nursing, And Contraception (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、予めパンツ型に形成されているパンツ型使い捨ておむつに関するものである。さらに詳しくは、本発明は、着用感に優れ、着用時あるいは着用中に接合部が不用意に引き裂かれることがなく、また、廃棄時には接合部を容易に引き剥がすことができるパンツ型使い捨ておむつに関するものである。
【０００２】
【従来の技術】
従来、パンツ型使い捨ておむつとしては、例えば、特開昭５７−７７３０４号公報に開示されているように、フラットタイプのおむつを股下部で二つに折り畳み、前身頃と後身頃におけるサイドフラップの左右の相対する側縁部を接合してウエスト周り開口部と一対の脚周り開口部を形成したものが提案されている。
このようなパンツ型使い捨ておむつは、着用者による着脱が可能であり、幼児のおむつ離れの時期、あるいは失禁者などの成人用としても需要が増大してきている。
【０００３】
このようなパンツ型使い捨ておむつは、着用者の汗や尿などの水蒸気による蒸れを防止するために通気性を付与する必要があり、さらに、接合部が、着用時には不用意に引き裂かれることがなく、また、廃棄時には容易に引き裂き分離が行われる必要がある。そのような接合部については、実公平７−５４２４４号公報、実公平８−７８５０号公報、実開平６−３１７２１号公報、実開平６−５０６２３号公報、特開平７−２１３５５３号公報、特開平７−２２７４０７号公報、特開平７−２５５７７３号公報、実開平７−３４８１４号公報等に、サイドフラップ側縁部の接合部を形成する接合線の寸法、形状、配列方法あるいは面積等を規定することが開示されている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記のパンツ型使い捨ておむつは、一般にサイドフラップ側縁部の接合が、熱溶融性樹脂からなる不織布やフィルムにより形成されているサイドフラップを加圧溶融あるいは超音波溶融等のヒートシールによって行われており、ヒートシール処理が施された部分の樹脂が溶融して固まり、硬い接合部が形成されるため、このような硬い接合部を有するおむつを着用した場合、接合部により肌が刺激され、着用者に不快感を与え、時として着用者の肌を傷つけるという問題点を有している。
【０００５】
この問題を改善するため、ヒートシール処理を軽減して樹脂の溶融を少なくすれば、硬い接合部が形成されることは改善されるが、接合強度が低下し、おむつ着用時に接合部が引き裂かれ易くなり、一方、ヒートシール処理を強化すれば接合部の強度は向上するが、接合部が硬くなるため、処理条件を適正な範囲にコントロールすることが難しいものであった。
【０００６】
したがって、本発明は、上記従来のパンツ型使い捨ておむつの有する問題点を克服し、着用時に皮膚を刺激することのない優れた着用感を有し、さらに、着用時あるいは着用中に接合部が不用意に引き裂かれることがなく、また、廃棄時には接合部を容易に引き剥がすことができるパンツ型使い捨ておむつを提供するするものである。
【０００７】
【課題を解決するための手段】
上記従来のパンツ型使い捨ておむつの有する問題点を解決するための本発明は、以下の各発明を包含する。
（１）前身頃と、後身頃と、これら前後身頃の間に位置する股下部とを有する部材を、前記股下部を介して二つに折り畳んで前記前身頃と後身頃を重ね合わせ、前記前後身頃の相対する両側縁部を接合してウエスト周り開口部と一対の脚周り開口部を形成し、前記各開口部に沿って伸縮弾性部材を配置したパンツ型使い捨ておむつにおいて、
前記前後身頃の両側縁部の接合が、前記両側縁部に形成された、前記側縁部に沿っておむつの長手方向に延在する所定幅の接合部によってなされ、
前記接合部は、その長手方向に所定間隔で配列された多数の接合線によって形成されており、
前記接合線は、前記接合部の長手方向と交差する方向に長い長さ寸法と、前記長さ寸法よりも短い高さ寸法を有しており、且つ、前記ウエスト周り開口部近傍及び脚周り開口部近傍を除く接合部において、その中央領域が切断された不連続の状態で配列されていることを特徴とするパンツ型使い捨ておむつ。
【０００８】
（２）前記接合線の長さ寸法が３〜１５ｍｍであり、高さ寸法が０．４〜５ｍｍであることを特徴とする（１）項記載のパンツ型使い捨ておむつ。
【０００９】
（３）前記接合線の配列間隔が０．５〜７ｍｍであることを特徴とする（１）項又は（２）項に記載のパンツ型使い捨ておむつ。
【００１０】
（４）前記接合線の不連続部分の間隔が０．４〜７ｍｍであることを特徴とする（１）項〜（３）項のいずれか１項に記載のパンツ型使い捨ておむつ。
【００１２】
（５）前記接合線は、前記ウエスト周り開口部近傍及び脚周り開口部近傍の接合部における配列間隔が、他の接合部における配列間隔よりも密になっていることを特徴とする（１）項〜（４）項のいずれか１項に記載のパンツ型使い捨ておむつ。
【００１３】
（６）前記接合線は、前記ウエスト周り開口部近傍及び脚周り開口部近傍の接合部における配列間隔が０．５〜１．５ｍｍであり、他の接合部における配列間隔が１〜７ｍｍであることを特徴とする（５）項記載のパンツ型使い捨ておむつ。
【００１４】
（７）前記接合線の前記接合部に占める面積の合計が２０〜６０％であることを特徴とする（１）項〜（６）項のいずれか１項に記載のパンツ型使い捨ておむつ。
【００１５】
（８）前記接合線の前記接合部に占める面積の合計が３０〜４０％であることを特徴とする（１）項〜（６）項のいずれか１項に記載のパンツ型使い捨ておむつ。
【００１６】
【発明の実施の形態】
本発明のパンツ型使い捨ておむつは、パンツを形成する部材の前後身頃の両側縁部の接合部が、その長手方向に所定間隔で配列された多数の接合線によって形成されており、また、接合線が接合部の長手方向と交差する方向に長い長さ寸法と、長さ寸法よりも短い高さ寸法を有しており、且つ、前記ウエスト周り開口部近傍及び脚周り開口部近傍を除く接合部において、その中央部が切断された不連続の状態、すなわち非接合領域が形成された状態、で配列されている。
このような構成を有する本発明のパンツ型使い捨ておむつは、その側縁部をヒートシールにより溶融して接合部が形成された場合であっても、接合部を形成する接合線の不連続部分が溶融されないまま残っているため、接合部に柔らかさが付与され、接合部が着用者の肌を刺激することがなく、優れた着用感を有し、さらに、着用時あるいは着用中に接合部が不用意に引き裂かれることがなく、また、廃棄時には接合部を容易に引き剥がすことができるものである。また、ウエスト周り開口部及び脚周り開口部近傍においては連続した接合線を配列することにより、伸縮弾性部材をしっかりと固定することが可能となる。
【００１７】
この場合、接合線の長さ寸法が３〜１５ｍｍであり、高さ寸法が０．４〜５ｍｍであることが好ましい。長さ寸法が３ｍｍ未満になると接合部の強度が低下し、着用時に引き裂かれ易くなり、一方、１５ｍｍを超えて長くなるとおむつの見栄えが悪くなると共に、おむつの上に衣類を着用させる場合に着用させ難くなる。また、高さ寸法が０．４ｍｍ未満になると接合部の強度が低下し、一方、５ｍｍを超えて長くなると接合部が硬くなり、着用者の肌を刺激し易くなると共におむつ廃棄時に接合部が引き剥がし難くなる。
なお、本発明において、接合線とは、パンツ部材のヒートシール処理が施された部分に形成されたパターンのことであり、パンツ部材が溶融接合された状態のもの及び過度のヒートシール処理によりパンツ部材が融解して空隙が形成された状態のものを含む。また、接合線の長さ寸法とは、中央領域が切断されていない状態の接合線の長さ（すなわち接合部の全幅）を意味し、中央領域が切断されている場合には、中央領域が連続していると見なした長さを意味する。また、中央領域が切断されている接合線は、当然のことながら、その実際の長さ寸法の範囲は上記範囲の半分未満になる。
【００１８】
また、接合線の配列間隔が０．５〜７ｍｍであり、さらに、接合線の不連続部分の間隔が０．４〜７ｍｍであることが好ましい。配列間隔が０．５ｍｍ未満になると接合部が硬くなると共におむつ廃棄時に接合部が引き剥がし難くなり、一方、７ｍｍを越えて広くなると接合部の強度が低下する。また、不連続部分の間隔が０．４ｍｍ未満になると接合部に柔らかさが付与されなくなり、一方、７ｍｍを越えて広くなると接合部の強度が低下する。
【００１９】
さらに、接合線は、ウエスト周り開口部近傍及び脚周り開口部近傍の接合部における配列間隔が、他の接合部における配列間隔よりも密になっていることが好ましい。すなわち、ウエスト周り開口部及び脚周り開口部には各々伸縮弾性部材が配置されることにより、伸縮弾性部材をしっかりと固定することが可能となり、さらに、おむつ装着時の接合強度を維持することが可能となる。
【００２０】
この場合、ウエスト周り開口部近傍及び脚周り開口部近傍の接合部における接合線の配列間隔が０．５〜１．５ｍｍであり、他の接合部における接合線の配列間隔が１〜７ｍｍであることが好ましい。このような構成にすることにより、より優れた本発明の効果を有するパンツ型使い捨ておむつを得ることができる。
ウエスト周り開口部近傍及び脚周り開口部近傍の接合部における接合線の配列間隔が０．５ｍｍ未満になると、接合部が硬くなると共におむつ廃棄時に接合部が引き裂き難くなり、一方、１．５ｍｍを越えて広くなると接合部の強度が低下する。
また、上記開口部近傍以外の接合部における接合線の配列間隔が１ｍｍ未満になると、接合線の配列間隔が密になり、着用感が劣るようになり、一方、７ｍｍを超えて広くなると接合強度が低下する。
【００２１】
また、接合部における接合線の占める面積の合計が２０〜６０％であることが好ましく、３０〜４０％であることがより好ましい。接合線の占有面積が２０％未満になると接合部の強度が低下し、一方、６０％を超えて多くなると接合部が着用者の肌を刺激し、着用感が悪くなる。
【００２２】
本発明のパンツ型使い捨ておむつは、パンツを形成する部材をその股下部を介して二つに折り畳み、前身頃と後身頃の相対する両側縁部を接合してウエスト周り開口部と一対の脚周り開口部を形成し、各開口部に沿って伸縮弾性部材を配置して形成される。
具体的には、液透過性の表面シートと、液不透過性の裏面シートと、これら両シートの間に配置された吸収体とからなるいわゆる一体型のおむつを用い、これを表面シートを内側にして折り畳み、前後身頃のサイドフラップの両側縁部を接合してパンツ型使い捨ておむつを形成することができる。
あるいは、液透過性の表面シートと、液不透過性の裏面シートと、これら両シートの間に配置された吸収体とからなる吸収性本体と、吸収性本体が接合され、これを着用者に当てて保持する外装シートとからなるいわゆるツーピース型のおむつを用い、これを吸収性本体を内側にして折り畳み、外装シートの前後身頃のサイドフラップの両側縁部を接合してパンツ型使い捨ておむつを形成することもできる。
【００２３】
本発明において、液透過性の表面シートとしては、ポリエチレン、ポリプロピレン、ポリエステル、その他の熱可塑性樹脂を原料とした合成繊維等からなる不織布に親水化処理を施したものが用いられる。
【００２４】
本発明において、液不透過性の裏面シートとしては、液体不透過性のポリエチレンシート、好ましくは、微孔を設けたポリエチレンシート、あるいは熱可塑性樹脂にフィラーを加えて延伸したシートのような透湿性のある液体不透過性のシートが用いられる。このようなシートを用いると、蒸れが改善されるため快適な着用感が得られる。さらに、このようなシートの外面に不織布を張合わせた積層構造のシートを用いることもできる。
【００２５】
本発明において、吸収体としては、通常の使い捨ておむつのような吸収性物品に使用されるものであればいずれも使用することができる。すなわち、綿状パルプと高吸収性ポリマー（ＳＡＰ）を併用したもの、さらに熱融着繊維を加えたもの等を使用することができ、全体をティッシュのような親水性シートで包まれているものが好ましい。その他、親水性シートの片面にＳＡＰの層を設けたもの、２枚の親水性シートの間にＳＡＰを挟持したもの等のシート状の吸収体も使用することができる。また、吸収体の形状は、砂時計型でも矩形でも良いが、砂時計型の方がより良好なフィット性が得られる。
【００２６】
本発明において、外装シートとしては、ポリエチレン、ポリプロピレン、ポリエステル、その他の熱可塑性樹脂を原料とした合成繊維からなる不織布を用いることができる。外装シートは、１層の不織布で形成しても良く、２層以上の不織布を積層して形成しても良い。
【００２７】
本発明において、ウエスト周り開口部及び脚周り開口部に沿って配置される伸縮弾性部材は、天然系、合成系のウレタン糸、糸ゴム、平ゴム等の通常の吸収性物品に使用される伸縮弾性部材をそのまま使用することができ、これらの伸縮弾性部材を伸長状態で各開口部に沿って配置し、ホットメルト接着剤などにより接着固定される。
【００２８】
本発明において、パンツを形成する部材の両側縁部の接合は、ヒートシールにより行われる。すなわち、パンツを形成する部材の前後身頃の両側縁部を外側に突き出した合掌状に重ね合わせ、加圧溶融もしくは超音波溶融を各々単独で行うか、あるいはこれらを組合わせる方法によって行うことができる。
【００２９】
【実施例】
以下、実施例を示す図面を参照して本発明のパンツ型使い捨ておむつを詳細に説明するが、本発明はこれらの実施例に限定されるものではない。
図１は、本発明のパンツ型使い捨ておむつを示す斜視図である。
図１において、パンツ型使い捨ておむつ１は、パンツを形成する部材の前身頃２と後身頃３の相対する側縁部４が、外側に突き出した合掌状に重ね合わされて接合部５によって接合され、ウエスト周り開口部６と脚周り開口部７が形成されると共に各開口部に沿って伸縮弾性部材８が配置されて形成されている。
【００３０】
図２は、図１に示すパンツ型使い捨ておむつの接合された側縁部を開放展開した状態を示す斜視図である。
図２において、パンツ型使い捨ておむつ１は、液透過性の表面シート９と、液不透過性の裏面シート１０と、これら両シートの間に配置された吸収体（図示せず）とからなる一体型のおむつにより形成されており、前身頃２と後身頃３のサイドフラップ１１の両側縁部４が接合される。
また、ウエスト周り開口部６及び脚周り開口部７となる部分には、複数本の糸ゴムからなる伸縮弾性部材８が配置されている。１７は立体ギャザーを示している。
【００３１】
図３は、図２とは異なる例を示す、図１に示すパンツ型使い捨ておむつの接合された側縁部を開放展開した状態を示す斜視図である。
図３において、パンツ型使い捨ておむつ１は、排泄物を吸収する吸収性本体１２と、吸収性本体１２が接合され、これを着用者に当てて保持する外装シート１３とからなるツーピース型のおむつにより形成されており、外装シート１３の前身頃２と後身頃３のサイドフラップ１１の両側縁部４が接合される。
また、外装シート１３のウエスト周り開口部６及び脚周り開口部７となる部分には、複数本の糸ゴムからなる伸縮弾性部材８が配置されている。
【００３２】
図４は、図１に示すパンツ型使い捨ておむつの側縁部に形成された接合部の状態を示す部分拡大図である。
図４において、接合部５は、側縁部４の長手方向にウエスト周り開口部６から脚周り開口部７に亙って延在し、ヒートシールによって前後身頃の部材が融着されてなる接合線１４が所定間隔で多数配列されて形成されている。
接合線１４の各々は、接合部５の長手方向と交差する方向に長い長さ寸法（接合部５の幅寸法）と、長さ寸法よりも短い高さ寸法（使い捨ておむつ１の長手方向の寸法）を有しており、長さ寸法が３〜１５ｍｍであり、高さ寸法が０．４〜５ｍｍであることが好ましい。
また、接合線１４は、ウエスト周り開口部６近傍と脚周り開口部７近傍を除く接合部５において、中央領域が切断された不連続の状態で配列されており、この場合、不連続部分１５の間隔が０．４〜７ｍｍであることが好ましい。
さらに、接合線１４の配列間隔、すなわち、隣接する二つの接合線１４の間の非接合領域１６の幅が、ウエスト周り開口部６近傍及び脚周り開口部７近傍の接合部５において、他の接合部５よりも密になっており、この場合、ウエスト周り開口部６近傍及び脚周り開口部７近傍の接合部５における配列間隔が０．５〜１．５ｍｍであり、他の接合部５における配列間隔が１〜７ｍｍであることが好ましい。
【００３３】
図５及び図６は、パンツ型使い捨ておむつの側縁部に形成された接合部の状態を示す参考例の部分拡大図である。
図５において、接合部５は、その中央領域が切断された不連続の状態の接合線１４がおむつ側縁部４の長手方向全体に亙って配置されて形成されている。
また、図６において、接合部５は、全体が連続した接合線１４と中央領域が切断された不連続状態の接合線１４が交互に配列されて形成されている。
【００３４】
【発明の効果】
本発明のパンツ型使い捨ておむつは、両側縁部の接合部を形成する接合線として、接合部の少なくとも一部に、中央領域が切断された不連続の状態の接合線が配置されているため、着用時に接合部よって皮膚が刺激されることのない優れた着用感を有し、さらに、着用時あるいは着用中に接合部が不用意に引き裂かれることがなく、また、廃棄時には接合部を容易に引き剥がすことができる優れた効果を有するものである。
【図面の簡単な説明】
【図１】本発明のパンツ型使い捨ておむつの斜視図。
【図２】図１に示すパンツ型使い捨ておむつの接合部を開放展開した状態の斜視図。
【図３】図２とは異なる例を示す、図１に示すパンツ型使い捨ておむつの接合部を開放展開した状態の斜視図。
【図４】図１に示すパンツ型使い捨ておむつの側縁部の部分拡大図。
【図５】参考例のパンツ型使い捨ておむつの側縁部の部分拡大図。
【図６】参考例のパンツ型使い捨ておむつの側縁部の部分拡大図。
【符号の説明】
１：パンツ型使い捨ておむつ
２：前身頃
３：後身頃
４：側縁部
５：接合部
６：ウエスト周り開口部
７：脚周り開口部
８：伸縮弾性部材
９：液透過性の表面シート
１０：液不透過性の裏面シート
１１：サイドフラップ
１２：吸収性本体
１３：外装シート
１４：接合線
１５：接合線の不連続部分
１６：非接合領域
１７：立体ギャザー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pants-type disposable diaper that is formed in a pants shape in advance. More particularly, the present invention relates to a pants-type disposable diaper that is excellent in wearing feeling, that prevents the joint from being inadvertently torn during wearing or during wearing, and that can be easily peeled off when discarded. Is.
[0002]
[Prior art]
Conventionally, as a pants-type disposable diaper, for example, as disclosed in JP-A-57-77304, a flat-type diaper is folded in two at the crotch portion, and the left and right side flaps in the front body and the back body A structure has been proposed in which opposite side edge portions are joined to each other to form a waist opening and a pair of leg openings.
Such a pants-type disposable diaper can be attached and detached by the wearer, and the demand is increasing even when the infant is separated from the diaper or for adults such as incontinent persons.
[0003]
Such pants-type disposable diapers need to be breathable to prevent the wearer's sweat and urine from steaming, and the joints are not inadvertently torn when worn. Moreover, it is necessary to easily tear and separate at the time of disposal. For such joints, Japanese Utility Model Publication No. 7-54244, Japanese Utility Model Publication No. 8-7850, Japanese Utility Model Application Publication No. 6-31721, Japanese Utility Model Application Publication No. 6-50623, Japanese Patent Application Laid-Open No. 7-213553, Japanese Patent Application Laid-Open No. 7-227407, JP-A-7-255773, Japanese Utility Model Laid-Open No. 7-34814, etc. define the dimensions, shape, arrangement method, area, etc., of the joining line forming the joint portion of the side flap side edge. It is disclosed.
[0004]
[Problems to be solved by the invention]
However, in the above-described pants-type disposable diaper, the side flap side edge is generally joined by heat sealing such as pressure melting or ultrasonic melting of a side flap formed of a nonwoven fabric or film made of a heat-meltable resin. The heat-sealed part of the resin melts and hardens to form a hard joint, so when wearing a diaper having such a hard joint, the skin is stimulated by the joint. It has the problem of giving discomfort to the wearer and sometimes hurting the wearer's skin.
[0005]
To alleviate this problem, reducing the heat sealing process and reducing the melting of the resin will improve the formation of hard joints, but the joint strength will be reduced and the joints will be torn when wearing diapers. On the other hand, if the heat seal process is strengthened, the strength of the joint is improved, but the joint becomes hard, and it is difficult to control the processing conditions within an appropriate range.
[0006]
Therefore, the present invention overcomes the problems of the conventional pants-type disposable diapers described above, has an excellent feeling of wearing that does not irritate the skin when worn, and has no joint at the time of wearing or during wearing. It is an object of the present invention to provide a pants-type disposable diaper that is not easily torn and can be easily peeled off when discarded.
[0007]
[Means for Solving the Problems]
The present invention for solving the problems of the conventional pants-type disposable diapers includes the following inventions.
(1) A member having a front body, a back body, and a crotch part positioned between the front and back bodies is folded in two through the crotch part so that the front body and the back body are overlapped, In a pants-type disposable diaper in which the opposite side edges of the body are joined to form an opening around the waist and a pair of legs around the opening, and an elastic elastic member is arranged along each opening,
The joining of the side edges of the front and back bodies is made by a joint of a predetermined width formed in the side edges and extending in the longitudinal direction of the diaper along the side edges,
The joint is formed by a large number of joint lines arranged at predetermined intervals in the longitudinal direction thereof,
The joint line has a length dimension that is long in a direction intersecting with a longitudinal direction of the joint section, and a height dimension that is shorter than the length dimension, and the vicinity of the opening around the waist and the opening around the leg A pants-type disposable diaper, characterized in that, in a joint part excluding the vicinity of the part , the central region is arranged in a discontinuous state.
[0008]
(2) The pants-type disposable diaper according to (1), wherein a length dimension of the joining line is 3 to 15 mm and a height dimension is 0.4 to 5 mm.
[0009]
(3) The pants-type disposable diaper according to (1) or (2), wherein the arrangement interval of the joining lines is 0.5 to 7 mm.
[0010]
(4) The pants-type disposable diaper according to any one of items (1) to (3), wherein an interval between discontinuous portions of the joint line is 0.4 to 7 mm.
[0012]
( 5 ) The bonding line is characterized in that the arrangement interval in the vicinity of the waist opening and the vicinity of the leg opening is closer than the arrangement interval in the other bonding portions (1). Item pants-type disposable diaper according to any one of items ( 4 ) to ( 4 ).
[0013]
( 6 ) As for the said joint line, the arrangement | positioning space | interval in the junction part of the said waist periphery opening part vicinity and the leg periphery opening part vicinity is 0.5-1.5 mm, and the arrangement | positioning space | interval in another junction part is 1-7 mm. The pants-type disposable diaper according to ( 5 ), characterized in that.
[0014]
( 7 ) The pants-type disposable diaper according to any one of (1) to ( 6 ), wherein the total area of the joint line in the joint is 20 to 60%.
[0015]
( 8 ) The pants-type disposable diaper according to any one of (1) to ( 6 ), wherein the total area of the joint line in the joint is 30 to 40%.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
In the pants-type disposable diaper of the present invention, the joint portions of the side edges of the front and rear bodies of the member forming the pants are formed by a number of joint lines arranged at predetermined intervals in the longitudinal direction. Has a length dimension that is long in a direction intersecting the longitudinal direction of the joint section, and a height dimension that is shorter than the length dimension, and the joint section excluding the vicinity of the waist opening and the leg opening In FIG. 2 , the central portion is arranged in a discontinuous state, that is, in a state in which a non-bonded region is formed.
The pants-type disposable diaper of the present invention having such a configuration has a discontinuous portion of the joint line forming the joint portion even when the side edge portion is melted by heat sealing to form the joint portion. Since it remains unmelted, softness is imparted to the joint, the joint does not irritate the wearer's skin, has an excellent feeling of wear, and the joint is not worn or worn. It is not inadvertently torn and can be easily peeled off when discarded. In addition, the elastic elastic member can be firmly fixed by arranging continuous joining lines in the vicinity of the waist opening and the leg opening.
[0017]
In this case, the length of the joining line is preferably 3 to 15 mm, and the height is preferably 0.4 to 5 mm. If the length dimension is less than 3 mm, the strength of the joint will be reduced, and it will be easy to tear when worn. It becomes difficult to let you. In addition, when the height dimension is less than 0.4 mm, the strength of the joint portion is reduced. On the other hand, when the height dimension is longer than 5 mm, the joint portion is hardened. It becomes difficult to peel off.
In addition, in this invention, a joining line is a pattern formed in the part to which the heat-sealing process of the underpants member was performed, and the underpants by the state in which the underpants member was melt-bonded and an excessive heat-sealing process. It includes those in which the member is melted to form voids. Further, the length dimension of the joining line means the length of the joining line in a state where the central area is not cut (that is, the entire width of the joining portion). When the central area is cut, the central area is It means the length considered to be continuous. Further, as a matter of course, the actual length dimension range of the joining line in which the central region is cut is less than half of the above range.
[0018]
Moreover, it is preferable that the arrangement | sequence space | interval of a joining line is 0.5-7 mm, and also the space | interval of the discontinuous part of a joining line is 0.4-7 mm. When the arrangement interval is less than 0.5 mm, the joint portion becomes hard and the joint portion is difficult to peel off when the diaper is discarded. On the other hand, when the width exceeds 7 mm, the strength of the joint portion decreases. Further, when the distance between the discontinuous portions is less than 0.4 mm, the joint is not given softness, while when it exceeds 7 mm, the strength of the joint is reduced.
[0019]
Furthermore, it is preferable that the arrangement | positioning space | interval in the junction part of the waist vicinity vicinity part and leg leg opening part vicinity is denser than the arrangement | positioning space | interval in another junction part. In other words, the elastic elastic members are disposed in the waist opening and the leg opening, respectively, so that the elastic elastic member can be firmly fixed, and the bonding strength when the diaper is mounted can be maintained. It becomes possible.
[0020]
In this case, the arrangement interval of the joining lines at the joints near the waist opening and the leg opening is 0.5 to 1.5 mm, and the joining line arrangement at the other joints is 1 to 7 mm. It is preferable. By setting it as such a structure, the pants type disposable diaper which has the effect of this invention more excellent can be obtained.
When the arrangement interval of the joining lines at the joints in the vicinity of the opening around the waist and in the vicinity of the opening around the leg is less than 0.5 mm, the joint becomes hard and the joint is difficult to tear when the diaper is discarded. If it exceeds this range, the joint strength decreases.
Moreover, when the arrangement interval of the joining lines in the joining portion other than the vicinity of the opening becomes less than 1 mm, the arrangement interval of the joining lines becomes dense and the wearing feeling becomes inferior. On the other hand, when it exceeds 7 mm, the joining strength is increased. Decreases.
[0021]
Moreover, it is preferable that the total of the area which the joint line accounts in a junction part is 20 to 60%, and it is more preferable that it is 30 to 40%. When the area occupied by the joint line is less than 20%, the strength of the joint portion is reduced. On the other hand, when it exceeds 60%, the joint portion stimulates the skin of the wearer, and the wearing feeling is deteriorated.
[0022]
In the pants-type disposable diaper of the present invention, the members forming the pants are folded in two through the crotch portion, the opposite side edges of the front body and the back body are joined, and the opening around the waist and the pair of legs An opening is formed, and an elastic elastic member is disposed along each opening.
Specifically, a so-called integrated diaper composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the two sheets is used, and the top sheet is used as the inside sheet. The pants-type disposable diaper can be formed by folding and joining both side edges of the side flaps of the front and rear bodies.
Alternatively, an absorbent main body composed of a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the two sheets, and the absorbent main body are joined to the wearer. Using a so-called two-piece diaper consisting of an exterior sheet to hold and hold, fold it with the absorbent main body inside, and join both side edges of the side flaps on the front and back of the exterior sheet to form a pants-type disposable diaper You can also
[0023]
In the present invention, as the liquid-permeable surface sheet, a non-woven fabric made of synthetic fiber or the like using polyethylene, polypropylene, polyester, or other thermoplastic resin as a raw material is used.
[0024]
In the present invention, the liquid-impermeable back sheet is a liquid-impermeable polyethylene sheet, preferably a polyethylene sheet provided with micropores, or a moisture-permeable sheet such as a sheet stretched by adding a filler to a thermoplastic resin. A liquid impervious sheet is used. When such a sheet is used, since the stuffiness is improved, a comfortable wearing feeling can be obtained. Furthermore, a sheet having a laminated structure in which a nonwoven fabric is bonded to the outer surface of such a sheet can also be used.
[0025]
In the present invention, any absorber can be used as long as it is used for absorbent articles such as ordinary disposable diapers. In other words, a combination of cotton-like pulp and superabsorbent polymer (SAP), a material added with heat-sealing fibers, etc. can be used, and the whole is wrapped in a hydrophilic sheet such as a tissue. Is preferred. In addition, a sheet-like absorbent body such as one provided with a SAP layer on one side of a hydrophilic sheet and one in which SAP is sandwiched between two hydrophilic sheets can also be used. Further, the shape of the absorber may be an hourglass shape or a rectangular shape, but the hourglass shape can provide better fit.
[0026]
In the present invention, as the exterior sheet, a nonwoven fabric made of synthetic fibers using polyethylene, polypropylene, polyester, or other thermoplastic resins as raw materials can be used. The exterior sheet may be formed of one layer of nonwoven fabric or may be formed by laminating two or more layers of nonwoven fabric.
[0027]
In the present invention, the elastic elastic member disposed along the waist opening and the leg opening is a stretch used for ordinary absorbent articles such as natural and synthetic urethane yarns, thread rubber, and flat rubber. The elastic members can be used as they are, and these elastic elastic members are arranged along the respective openings in an expanded state, and are bonded and fixed by a hot melt adhesive or the like.
[0028]
In the present invention, the joining of both side edges of the member forming the pants is performed by heat sealing. That is, it is possible to superimpose both side edges of the front and rear body of the member forming the pants in a palm-like shape protruding outward, and perform pressure melting or ultrasonic melting individually, or a method of combining them. .
[0029]
【Example】
Hereinafter, although the underpants type disposable diaper of this invention is demonstrated in detail with reference to drawings which show an Example, this invention is not limited to these Examples.
FIG. 1 is a perspective view showing a pants-type disposable diaper according to the present invention.
In FIG. 1, the pants-type disposable diaper 1 is formed by joining the opposing
[0030]
FIG. 2 is a perspective view showing a state in which the joined side edges of the pants-type disposable diaper shown in FIG. 1 are opened and deployed.
In FIG. 2, a pants-type disposable diaper 1 includes a liquid-permeable top sheet 9, a liquid-
In addition, a stretchable
[0031]
FIG. 3 is a perspective view showing a state in which the joined side edges of the pants-type disposable diaper shown in FIG.
In FIG. 3, the pants-type disposable diaper 1 is a two-piece diaper comprising an absorbent
In addition, a stretchable
[0032]
FIG. 4 is a partially enlarged view showing a state of the joint formed on the side edge of the pants-type disposable diaper shown in FIG. 1.
In FIG. 4, the joining
Each of the joining
Further, the
Furthermore, the arrangement interval of the joining
[0033]
5 and 6 are partial enlarged views of the reference example shown the state of the joint portion formed on a side edge portion of the path Ntsu type disposable diaper.
In FIG. 5, the joining
In FIG. 6, the
[0034]
【The invention's effect】
The pants-type disposable diaper of the present invention has a discontinuous joint line in which the central region is cut at least part of the joint part as a joint line that forms the joint part of both side edges. It has an excellent feeling that the skin is not stimulated by the joint when worn, and the joint is not inadvertently torn during wearing or during wearing. It has an excellent effect that can be peeled off.
[Brief description of the drawings]
FIG. 1 is a perspective view of a pants-type disposable diaper of the present invention.
FIG. 2 is a perspective view showing a state in which a joint portion of the pants-type disposable diaper shown in FIG. 1 is opened and deployed.
3 is a perspective view showing an example different from FIG. 2 in a state where a joint portion of the pants-type disposable diaper shown in FIG. 1 is opened and deployed.
FIG. 4 is a partially enlarged view of a side edge portion of the pants-type disposable diaper shown in FIG.
FIG. 5 is a partially enlarged view of a side edge portion of a pants-type disposable diaper of a reference example .
FIG. 6 is a partially enlarged view of a side edge portion of a pants-type disposable diaper of a reference example .
[Explanation of symbols]
1: Pants-type disposable diaper 2: Front body 3: Back body 4: Side edge part 5: Joint part 6: Waist circumference opening part 7: Leg circumference opening part 8: Stretchable elastic member 9: Liquid-permeable top sheet 10: Liquid-impermeable back sheet 11: Side flap 12: Absorbent body 13: Exterior sheet 14: Joining line 15:
Claims (3)
前記前後身頃の両側縁部の接合が、前記両側縁部に形成された、前記側縁部に沿っておむつの長手方向に延在する所定幅の接合部によってなされ、
前記接合部は、その長手方向に所定間隔で配列された多数の接合線によって形成されており、
前記接合線は、前記接合部の長手方向と交差する方向に長い長さ寸法と、前記長さ寸法よりも短い高さ寸法を有しており、且つ、前記ウエスト周り開口部近傍及び脚周り開口部近傍を除く接合部において、その中央領域が切断された不連続の状態で配列されていることを特徴とするパンツ型使い捨ておむつ。A member having a front body, a back body, and a crotch part positioned between the front and back bodies is folded in two through the crotch part so that the front body and the back body are overlapped, In a pants-type disposable diaper in which both side edges are joined to form a waist opening and a pair of leg openings, and an elastic elastic member is arranged along each opening,
The joining of the side edges of the front and back bodies is made by a joint of a predetermined width formed in the side edges and extending in the longitudinal direction of the diaper along the side edges,
The joint is formed by a large number of joint lines arranged at predetermined intervals in the longitudinal direction thereof,
The joint line has a length dimension that is long in a direction intersecting with a longitudinal direction of the joint section, and a height dimension that is shorter than the length dimension, and the vicinity of the opening around the waist and the opening around the leg A pants-type disposable diaper, characterized in that, in a joint part excluding the vicinity of the part , the central region is arranged in a discontinuous state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001214148A JP3783584B2 (en) | 2001-07-13 | 2001-07-13 | Pants-type disposable diapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001214148A JP3783584B2 (en) | 2001-07-13 | 2001-07-13 | Pants-type disposable diapers |
Publications (2)
| Publication Number | Publication Date |
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| JP2003024382A JP2003024382A (en) | 2003-01-28 |
| JP3783584B2 true JP3783584B2 (en) | 2006-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2001214148A Expired - Lifetime JP3783584B2 (en) | 2001-07-13 | 2001-07-13 | Pants-type disposable diapers |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4492005B2 (en) * | 2001-08-03 | 2010-06-30 | 王子製紙株式会社 | Pants-type disposable diaper |
| JP4776513B2 (en) * | 2006-12-01 | 2011-09-21 | 花王株式会社 | Pants-type wearing items |
| CN101547670B (en) * | 2006-12-08 | 2013-12-25 | 尤妮佳股份有限公司 | Absorptive article |
| MY152455A (en) * | 2009-03-23 | 2014-09-25 | Kao Corp | Pull-on absorbent article |
| JP6103752B2 (en) * | 2011-12-20 | 2017-03-29 | 花王株式会社 | Pants-type wearing article |
| JP6429710B2 (en) * | 2015-03-31 | 2018-11-28 | ユニ・チャーム株式会社 | Disposable wearing articles |
| JP6103024B2 (en) * | 2015-11-30 | 2017-03-29 | 王子ホールディングス株式会社 | Pants-type disposable diaper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2604545Y2 (en) * | 1992-10-08 | 2000-05-22 | トーヨー衛材株式会社 | Pants-type disposable diapers |
| JP2898533B2 (en) * | 1994-02-21 | 1999-06-02 | トーヨー衛材株式会社 | Disposable pants |
| JPH09238980A (en) * | 1996-03-12 | 1997-09-16 | Oji Paper Co Ltd | Pant type disposable diaper |
| JP3625000B2 (en) * | 1996-11-15 | 2005-03-02 | 花王株式会社 | Pants-type disposable diaper |
| JP2558577Y2 (en) * | 1996-11-26 | 1997-12-24 | ユニ・チャーム株式会社 | Disposable pants |
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2001
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| JP2003024382A (en) | 2003-01-28 |
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