JP3737709B2 - Pants-type disposable diapers - Google Patents

Pants-type disposable diapers Download PDF

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Publication number
JP3737709B2
JP3737709B2 JP2001081604A JP2001081604A JP3737709B2 JP 3737709 B2 JP3737709 B2 JP 3737709B2 JP 2001081604 A JP2001081604 A JP 2001081604A JP 2001081604 A JP2001081604 A JP 2001081604A JP 3737709 B2 JP3737709 B2 JP 3737709B2
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Prior art keywords
heat
sealing
diaper
waist
line
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JP2002272785A (en
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征爾 鈴木
孝明 島田
憲二 中村
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Uni Charm Corp
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Uni Charm Corp
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    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • 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
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • 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
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/223—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a triangle wave or of a sawtooth wave, e.g. zigzagged
    • 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
    • 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

Description

【０００１】
【発明の属する技術分野】
本発明は、排泄物を吸収、保持するパンツ型の使い捨ておむつに関する。
【０００２】
【従来の技術】
熱溶融性かつ透液性の繊維不織布からなる表面シートと、熱溶融性かつ実質的に不透液性の繊維不織布からなる裏面シートと、それらシートの間に介在する吸液性コアとから構成され、前後胴周り域の合掌状に重なり合う両側部がそれら側部の外縁近傍を縦方向へ間欠的に並ぶ複数条の熱融着線を介して連結され、胴周り開口と一対の脚周り開口とが画成されたパンツ型の使い捨ておむつは公知である。
【０００３】
着用状態にある前記おむつは、熱融着線に沿って前後胴周り域の両側部を胴周り開口から脚周り開口へ向かって縦方向へ引き裂き、前後胴周り域を前後に分離してから脱がせることができる。そのようなおむつとしては、実開平７−３４８１４号公報や実開平１０−８０号公報、実開平１０−８１号公報に開示されている。
【０００４】
【発明が解決しようとする課題】
それら公報に開示のおむつでは、表面シートや裏面シートを形成する繊維がおむつの胴周り方向へ配向していると、前後胴周り域の両側部を縦方向へ引き裂くときに、引き裂き線が途中から縦方向へ走らず、それが両側部の外縁に向かって胴周り方向（繊維の配向方向）へ走ってしまう場合がある。おむつでは、胴周り方向へ走った引き裂き線が外縁に達すると、両側部の引き裂きが中途半端に終わってしまい、引き裂き線が外縁に達した位置から両側部を持ち直し、再び両側部の引き裂きを行わなければならず、手間を要する。
【０００５】
本発明の課題は、引き裂き線が両側部の外縁に向かって胴周り方向へ走ったとしても、それが外縁に達してしまうことを防ぐことができ、両側部を縦方向へ円滑に引き裂くことができるパンツ型の使い捨ておむつを提供することにある。
【０００６】
【課題を解決するための手段】
前記課題を解決するための本発明の前提は、互いに対向する前胴周り域および後胴周り域と、それら胴周り域の間に位置する股下域とを備え、前記前後胴周り域の互いに重なり合う両側部が縦方向へ延びる接合域を介して連結され、胴周り開口と一対の脚周り開口とが画成されたパンツ型の使い捨ておむつである。
【０００７】
かかる前提における本発明の特徴として、前記接合域は、前記両側部の外縁近傍を胴周り方向へ延びていて前記胴周り開口と前記脚周り開口との間を前記縦方向へ密集して並ぶ複数条の第１熱融着線が形成された第１領域と、前記接合域の上部と中央部とに位置して前記第１熱融着線の内側近傍を前記縦方向へ間欠的に並ぶ複数条の第２熱融着線が形成された第２領域とからなり、前記第２熱融着線が、前記縦方向へ延びるとともに、該縦方向に隣り合う前記第１熱融着線の少なくとも２条に跨る縦寸法を有し、前記接合域の上部と中央部とでは、前記両側部が前記第２熱融着線に沿って前記縦方向へ引き裂き分離可能であり、前記接合域の下部では、前記両側部が前記第１熱融着線に沿って前記縦方向へ引き裂き分離可能であることにある。
【０００８】
本発明の実施の態様の一例としては、前記接合域の下部に位置する前記第１熱融着線の胴周り方向の寸法が、前記接合域の上部と中央部とに位置する前記第１熱融着線の胴周り方向のそれよりも長く、前記接合域の中央部最下に位置する前記第２熱融着線の下端とそれに隣り合う前記第１熱融着線の内端とが実質的につながっている。
【０００９】
本発明の実施の態様の他の一例としては、前記前後胴周り域の少なくとも一方における両側部が、前記おむつの胴周り方向内方へ向かって折曲され、前記接合域の上部および中央部に位置する前記第１熱融着線と前記接合域の下部に位置する前記第１熱融着線の一部とが、前記両側部の折曲部位に延び、前記第２熱融着線が、前記折曲部位の内側近傍に延びている。
【００１０】
本発明の実施の態様の他の一例としては、前記第２熱融着線が、前記おむつの胴周り方向へ向かって略Ｖ字状または略ハの字状を画いて延びている。
【００１１】
本発明の実施の態様の他の一例としては、前記第２熱融着線が、前記おむつの胴周り方向へ向かって実質的に弧を画いて延びている。
【００１２】
【発明の実施の形態】
添付の図面を参照し、本発明に係るパンツ型の使い捨ておむつの詳細を説明すると、以下のとおりである。
【００１３】
図１，２は、一部を破断して示すおむつ１Ａの斜視図と、おむつ１Ａの部分斜視図とであり、図３は、側部７，８を胴周り開口５から脚周り開口６へ向かって縦方向へ引き裂いた状態で示すおむつ１Ａの部分斜視図である。図１では、胴周り方向を矢印Ｘで示し、縦方向を矢印Ｙで示す。なお、表面シート２や裏面シート３の内面とは、コア４に対向する面をいい、それらシート２，３の外面とは、コア４に非対向の面をいう。
【００１４】
おむつ１Ａは、熱溶融性かつ透液性の表面シート２と、熱溶融性かつ不透液性の裏面シート３と、それらシート２，３の間に介在する吸液性コア４とから構成されている。コア４は、表面シート２と裏面シート３との少なくとも一方の内面に接合されている。
【００１５】
おむつ１Ａは、互いに対向する前胴周り域１８および後胴周り域２０と、前後胴周り域１８，２０の間に位置する股下域１９とを有する。おむつ１Ａには、胴周り開口５と一対の脚周り開口６とが画成されている。
【００１６】
おむつ１Ａでは、前後胴周り域１８，２０の両側部７，８が合掌状に重なり合い、それら側部７，８が縦方向へ延びる接合域１１を介して固着されている。前後胴周り域１８，２０の両側部７，８は、コア４の両側縁から胴周り方向外方へ延びる表面シート２と裏面シート３とから形成されている。それら側部７，８の固着には、ヒートシールや超音波接合等の融着手段を利用している。
【００１７】
接合域１１は、胴周り開口５と脚周り開口６との間を縦方向へ密集して並ぶ複数条の第１熱融着線１２が形成された第１熱融着線形成領域１３（第１領域）と、接合域１１の上部１１ａと中央部１１ｂとに位置して第１熱融着線１２の内側近傍を縦方向へ間欠的に並ぶ複数条の第２熱融着線１４が形成された第２熱融着線形成領域１５（第２領域）とから構成されている。接合域１１では、その中央部１１ｂ最下に位置する第２熱融着線１４の下端１４ａとそれに隣り合う第１熱融着線１２の内端１２ａとが近接し、それら熱融着線１２，１４の内端１２ａと下端１４ａとが実質的につながっている。
【００１８】
第１熱融着線１２は、両側部７，８の外縁９，１０近傍を胴周り方向へ延びている。接合域１１の下部１１ｃに位置する第１熱融着線１２の胴周り方向の寸法Ｌ２は、接合域１１の上部１１ａと中央部１１ｂとに位置する第１熱融着線１２の胴周り方向のそれよりも長い。接合域１１の上部１１ａと中央部１１ｂとに位置する第１熱融着線１２の胴周り方向の寸法Ｌ１は、２〜５ｍｍの範囲にあることが好ましく、接合域１１の下部１１ｃに位置する第１熱融着線１２の胴周り方向の寸法Ｌ２は、５〜１０ｍｍの範囲にあることが好ましい。互いに隣り合う第１熱融着線１０の縦方向の離間寸法Ｌ３は、０．０５〜１ｍｍの範囲にあることが好ましい。
【００１９】
第２熱融着線１４は、胴周り方向へ向かって略ハの字状を画くように縦方向へ延びている。第２熱融着線１４は、縦方向に隣り合う第１熱融着線１２の略４条に跨る縦寸法Ｌ４を有する。第２熱融着線１４は、縦方向に隣り合う第１熱融着線１２の少なくとも２条に跨る縦寸法Ｌ４を有していればよく、その縦寸法Ｌ４が２〜１５ｍｍの範囲にあることが好ましい。互いに隣り合う第２熱融着線１４の縦方向の離間寸法Ｌ５は、０．３〜２ｍｍの範囲にあることが好ましい。接合域１１の上部１１ａに位置する第２熱融着線１４は、その開角θ１が３０〜９０°の範囲にあることが好ましく、接合域１１の中央部１１ｂに位置する第２熱融着線１４は、その開角θ２が１５〜６０°の範囲にあることが好ましい。
【００２０】
おむつ１Ａでは、図３に示すように、前後胴周り域１９，２０を矢印Ｚの方向へ引っ張ることにより、側部７，８を胴周り開口５から脚周り開口６へ向かって縦方向へ引き裂くことができる。接合域１１の上部１１ａと中央部１１ｂとでは、側部７，８が縦方向へ連なる第２熱融着線１４の周縁に沿ってジグザグに裂けて行く。接合域１１の下部１１ｃでは、側部７，８が縦方向へ並ぶ第１熱融着線１２の周縁に沿って裂けて行く。
【００２１】
接合域１１では、第１熱融着線１２の単位面積当たりの密度が第２熱融着線１４の単位面積当たりのそれよりも高く、第１熱融着線形成領域１３の引き裂き強度が第２熱融着線形成領域１５のそれよりも大きい。おむつ１Ａでは、表裏面シート２，３を形成する繊維や高分子が胴周り方向へ配向していると、側部７，８を引き裂くときに、引き裂き線がそれら側部７，８の外縁９，１０へ向かって走る場合がある。しかし、おむつ１Ａでは、引き裂き線の外縁９，１０への走りが引き裂き強度の大きい第１熱融着線形成領域１３によって阻止され、引き裂き線が外縁９，１０に達してしまうことはない。
【００２２】
おむつ１Ａでは、外縁９，１０へ向かった引き裂き線が第１熱融着線形成領域１３に達した後、引き裂き線が第１熱融着線形成領域１３から第２熱融着線形成領域１５に戻り、側部７，８が再び第２熱融着線１４に沿って縦方向へ裂けて行く。
【００２３】
おむつ１Ａでは、接合域１１の中央部１１ｂ最下に位置する第２熱融着線１４の下端１４ａとそれに隣り合う第１熱融着線１２の内端１２ａとが実質的につながっているので、引き裂き線が下端１４ａから内端１２ａへ向かって走り、引き裂き線がおむつ１Ａの胴周り方向内方へ向かって走ってしまうことはない。おむつ１Ａでは、接合域１１において側部７，８を縦方向へ円滑に引き裂くことができる。
【００２４】
胴周り開口５の周縁部には、胴周り方向へ延びる複数条の胴周り用弾性部材１６が表面シート２と裏面シート３との間に介在し、それらシート２，３の内面に伸長状態で取り付けられている。脚周り開口６の周縁部には、脚周り方向へ延びる複数条の脚周り用弾性部材１７が表面シート２と裏面シート３との間に介在し、それらシート２，３の内面に伸長状態で取り付けられている。図１では、それら弾性部材１６，１７が収縮し、胴周り開口５の周縁部と脚周り開口６の周縁部とに沿って多数のギャザーが形成されている。
【００２５】
図４，５は、他の実施の形態を示すおむつ１Ｂ，１Ｃの部分斜視図である。図４のおむつ１Ｂが図１のそれと異なる点は、表面シート２の外面を互いに当接させた状態で前胴周り域１８の両側部７が胴周り方向内方へ向かって折曲されていることにある。図５のおむつ１Ｃが図１のそれと異なる点は、表面シート２の外面を互いに当接させた状態で前後胴周り域１８，２０の両側部７，８が胴周り方向内方へ向かって折曲されていることにある。
【００２６】
それらおむつ１Ｂ，１Ｃでは、接合域１１の上部１１ａおよび中央部１１ｂに位置する第１熱融着線１２と接合域１１の下部１１ｃに位置する第１熱融着線１２の一部とが両側部７，８の折曲部位２１に延び、第２熱融着線１４が折曲部位２１の内側近傍に延びている。第１熱融着線１２は、外縁９，１０近傍を胴周り方向へ延びるとともに、縦方向へ密集して並んでいる。第２熱融着線１４は、接合域１１の上部１１ａと中央部１１ｂとにおいて胴周り方向へ向かって略ハの字状を画くように縦方向へ延びている。
【００２７】
それらおむつ１Ｂ，１Ｃでは、折曲部位２１において側部７，８が３重または４重になった状態で固着されているので、第１熱融着線形成領域１３の引き裂き強度を図１のそれよりも大きくすることができ、側部７，８を引き裂くときに、引き裂き線が外縁９，１０ヘ達してしまうことを第１熱融着線形成領域１３において確実に阻止することができる。
【００２８】
それらおむつ１Ｂ，１Ｃでは、引き裂き線が外縁９，１０ヘ向かって走ったとしても、第１熱融着線形成領域１３に達した引き裂き線が再び第２熱融着線形成領域１５へ戻り、それが外縁９，１０に達してしまうことはない。
【００２９】
図６，７は、他の実施の形態を示すおむつ１Ｄ，１Ｅの部分斜視図である。図６のおむつ１Ｄが図１のそれと異なる点は、接合域１１の上部１１ａと中央部１１ｂとにおいて第２熱融着線１４が胴周り方向へ向かって略Ｖ字状を画くように縦方向へ延びていることにある。第１熱融着線１２は、外縁９，１０近傍を胴周り方向へ延びるとともに、縦方向へ密集して並んでいる。第２熱融着線１４の縦寸法は、５〜１５ｍｍの範囲にあることが好ましい。第２熱融着線１４の縦方向の離間寸法や接合域１１の上部１１ａに位置する第２熱融着線１４の開角、接合域１１の中央部１１ｂに位置する第２熱融着線１４の開角は、図１のそれと同一の範囲にあることが好ましい。
【００３０】
このおむつ１Ｄでは、接合域１１の上部１１ａと中央部１１ｂとにおいて側部７，８が縦方向へ連なる第２熱融着線１４の周縁に沿ってジグザグに裂けて行き、接合域１１の下部１１ｃにおいて側部７，８が縦方向へ並ぶ第１熱融着線１２の周縁に沿って裂けて行く。
【００３１】
図７のおむつ１Ｅが図１のそれと異なる点は、接合域１１の上部１１ａと中央部１１ｂとにおいて第２熱融着線１４が胴周り方向内方と胴周り方向外方とヘ向かって実質的に弧を画くように縦方向へ延びていることにある。第１熱融着線１２は、外縁９，１０近傍を胴周り方向へ延びるとともに、縦方向へ密集して並んでいる。第２熱融着線１４の縦寸法は、５〜１５ｍｍの範囲にあることが好ましい。第２熱融着線１４の縦方向の離間寸法は、図１のそれと同一の範囲にあることが好ましい。
【００３２】
このおむつ１Ｅでは、接合域１１の上部１１ａと中央部１１ｂとにおいて側部７，８が縦方向へ連なる第２熱融着線１４の周縁に沿って円弧状に裂けて行き、接合域１１の下部１１ｃにおいて側部７，８が縦方向へ並ぶ第１熱融着線１２の周縁に沿って裂けて行く。
【００３３】
それら図示例のおむつ１Ａ〜１Ｅでは、第２熱融着線１４が胴周り方向へ向かって略ハの字状や略Ｖ字状、または、胴周り方向へ向かって実質的に弧を画いて延びているが、第２熱融着線１４が縦方向へ略直状に延びていてもよい。
【００３４】
表面シート２には、親水性繊維不織布、または、微細な多数の開孔を有するプラスチックフィルムを使用することができる。裏面シート３には、疎水性繊維不織布、不透液性のプラスチックフィルム、疎水性繊維不織布を重ね合わせた２層の不織布、疎水性繊維不織布にプラスチックフィルムを固着した複合シートのいずれかを使用することができる。
【００３５】
裏面シート３には、高い耐水性を有するメルトブローン法による繊維不織布を、高い強度を有しかつ柔軟性に富んだスパンボンド法による繊維不織布で挟んだ複合不織布を使用することもできる。
【００３６】
不織布としては、スパンレース、ニードルパンチ、メルトブローン、サーマルボンド、スパンボンド、ケミカルボンド、エアースルー、の各製法により製造されたものを使用することができる。不織布の構成繊維としては、ポリオレフィン系、ポリエステル系、ポリアミド系、の各繊維、ポリエチレン／ポリプロピレン、または、ポリエチレン／ポリエステルからなる芯鞘型複合繊維または並列型複合繊維を使用することができる。
【００３７】
コア４は、フラッフパルプと高吸収性ポリマー粒子との混合物、または、フラッフパルプと高吸収性ポリマー粒子と熱可塑性合成樹脂繊維との混合物であり、所要の厚みに圧縮されている。コア４は、ポリマー粒子の脱落や型崩れを防止するためにその全体がティッシュペーパーに被覆されていることが好ましい。ポリマー粒子としては、デンプン系、セルロース系、合成ポリマー系のものを使用することができる。
【００３８】
【発明の効果】
本発明にかかるパンツ型の使い捨ておむつによれば、前後胴周り域の両側部を引き裂くときに、引き裂き線がそれら側部の外縁へ向かって走ったとしても、引き裂き線の外縁への走りが第１領域によって阻止され、それが外縁に達することはない。このおむつでは、外縁へ向かった引き裂き線が第１領域に達した後、引き裂き線が第１領域から第２領域に戻り、両側部が再び第２熱融着線に沿って縦方向へ裂けて行く。このおむつでは、接合域において両側部を縦方向へ円滑に引き裂くことができる。
【００３９】
接合域の中央部最下に位置する第２熱融着線の下端とそれに隣り合う第１熱融着線の内端とが実質的につながるおむつでは、引き裂き線が第２熱融着線の下端から第１熱融着線の内端へ向かって走り、引き裂き線がおむつの胴周り方向内方へ向かって走ってしまうことはなく、接合域の下部における両側部の引き裂きを円滑に行うことができる。
【００４０】
前後胴周り域の少なくとも一方における両側部がおむつの胴周り方向内方へ向かって折曲され、接合域の上部および中央部に位置する第１熱融着線と接合域の下部に位置する第１熱融着線の一部とが両側部の折曲部位に延びているおむつでは、折曲部位において両側部が３重または４重になった状態で固着されているので、第１領域における引き裂き強度を一層大きくすることができ、引き裂き線がそれら側部の外縁ヘ達してしまうことを第１領域において確実に阻止することができる。
【図面の簡単な説明】
【図１】一部を破断して示すおむつの斜視図。
【図２】おむつの部分斜視図。
【図３】側部を縦方向へ引き裂いた状態で示すおむつの部分斜視図。
【図４】他の実施の形態を示すおむつの部分斜視図。
【図５】他の実施の形態を示すおむつの部分斜視図。
【図６】他の実施の形態を示すおむつの部分斜視図。
【図７】他の実施の形態を示すおむつの部分斜視図。
【符号の説明】
１Ａ〜１Ｅ パンツ型の使い捨ておむつ
５ 胴周り開口
６ 脚周り開口
７ 両側部
８ 両側部
９ 外縁
１０ 外縁
１１ 接合域
１１ａ 上部
１１ｂ 中央部
１１ｃ 下部
１２ 第１熱融着線
１２ａ 内端
１３ 第１熱融着線形成領域（第１領域）
１４ 第２熱融着線
１４ａ 下端
１５ 第２熱融着線形成領域（第２領域）
１８ 前胴周り域
１９ 股下域
２０ 後胴周り域
２１ 折曲部位
Ｌ４ 縦寸法[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pants-type disposable diaper that absorbs and holds excrement.
[0002]
[Prior art]
Consists of a front sheet made of a heat-fusible and liquid-permeable fiber nonwoven fabric, a back sheet made of a heat-meltable and substantially liquid-impervious fiber nonwoven fabric, and a liquid-absorbent core interposed between the sheets The two sides that overlap in the shape of a palm in the front and rear waist area are connected via a plurality of heat-sealing wires that are intermittently arranged in the vertical direction near the outer edges of the side parts, and the waist opening and a pair of leg openings A pants-type disposable diaper in which is defined is known.
[0003]
The diaper in a worn state can be removed by tearing both sides of the front / rear waist area vertically from the waist opening to the leg opening along the heat-bonding line, separating the front / rear waist area back and forth be able to. Such diapers are disclosed in Japanese Utility Model Laid-Open Nos. 7-34814, 10-80, and 10-81.
[0004]
[Problems to be solved by the invention]
In the diapers disclosed in these publications, when the fibers forming the top sheet and the back sheet are oriented in the waist direction of the diaper, when tearing both sides of the front and back waist area in the longitudinal direction, In some cases, it does not run in the longitudinal direction, and it runs in the trunk direction (fiber orientation direction) toward the outer edges of both sides. In a diaper, when the tear line that runs around the trunk reaches the outer edge, the tearing on both sides ends halfway, and then the sides of the tear line reach the outer edge. It must be troublesome.
[0005]
The problem of the present invention is that even if the tear line runs in the direction around the trunk toward the outer edges of both sides, it can be prevented from reaching the outer edges, and both sides can be torn smoothly in the vertical direction. An object of the present invention is to provide a pants-type disposable diaper that can be used.
[0006]
[Means for Solving the Problems]
The premise of the present invention for solving the above-mentioned problems is that the front waist region and the back waist region that face each other, and a crotch region positioned between the waist regions, the front and back waist regions overlap each other. A pants-type disposable diaper in which both side portions are connected via a joint region extending in the vertical direction and a waist opening and a pair of leg openings are defined.
[0007]
As a feature of the present invention based on this premise, the joint area extends in the vicinity of the outer periphery of the both side portions in the waist circumference direction, and a plurality of joint areas are arranged in the vertical direction between the waist circumference opening and the leg circumference opening. A plurality of first regions where the first heat-sealing lines of the strips are formed, and a plurality of regions adjacent to the inside of the first heat-sealing wires that are intermittently arranged in the longitudinal direction and located in the upper and central portions of the joining region consists of a second region in which the second heat Chakusen the strip is formed, the second heat Chakusen is, extends into the longitudinal direction, at least the first heat Chakusen adjacent to said longitudinal direction It has a vertical dimension extending over two strips, and at the upper part and the central part of the joining area, the both side parts can be separated in the longitudinal direction along the second heat-sealing line, and the lower part of the joining area Then, the two side portions can be separated in the longitudinal direction along the first heat-sealing line.
[0008]
As an example of an embodiment of the present invention, the size of the first heat-sealing wire located at the lower part of the joining region is measured in the waist circumference direction at the first heat located at the upper part and the central part of the joining region. The lower end of the second heat-sealing line and the inner end of the first heat-sealing line adjacent to the lower end of the second heat-sealing line, which are longer than those in the circumferential direction of the fusing line and located at the lowermost center of the joining region, are substantially Connected.
[0009]
As another example of the embodiment of the present invention, both side portions in at least one of the front and rear waist regions are bent inward in the waist direction of the diaper, and are formed at the upper and middle portions of the joint region. The first heat-sealing line located and a part of the first heat-sealing line located in the lower part of the joining area extend to the bent portions on both sides, and the second heat-sealing line is It extends near the inside of the bent part.
[0010]
As another example of the embodiment of the present invention, the second heat-sealing line extends in a substantially V shape or a substantially C shape toward the waist of the diaper.
[0011]
As another example of the embodiment of the present invention, the second heat-sealing line extends substantially in an arc toward the waist of the diaper.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The details of the pants-type disposable diaper according to the present invention will be described below with reference to the accompanying drawings.
[0013]
1 and 2 are a perspective view of the diaper 1A partially cut away and a partial perspective view of the diaper 1A. FIG. 3 shows the side portions 7 and 8 from the waist opening 5 to the leg opening 6. It is a partial perspective view of diaper 1A shown in the state where it was torn in the vertical direction. In FIG. 1, the direction around the trunk is indicated by an arrow X, and the vertical direction is indicated by an arrow Y. The inner surface of the top sheet 2 and the back sheet 3 refers to a surface that faces the core 4, and the outer surfaces of the sheets 2 and 3 refer to surfaces that do not face the core 4.
[0014]
The diaper 1 </ b> A is composed of a heat-melt and liquid-permeable top sheet 2, a heat-melt and liquid-impervious back sheet 3, and a liquid-absorbent core 4 interposed between the sheets 2 and 3. ing. The core 4 is bonded to at least one inner surface of the top sheet 2 and the back sheet 3.
[0015]
The diaper 1 </ b> A has a front waistline region 18 and a back waistline region 20 that face each other, and a crotch region 19 that is positioned between the front and back waistline regions 18, 20. The diaper 1 </ b> A has a waist opening 5 and a pair of leg openings 6.
[0016]
In the diaper 1 </ b> A, both side portions 7 and 8 of the front and rear waist regions 18 and 20 are overlapped with each other, and the side portions 7 and 8 are fixed via a joining region 11 extending in the vertical direction. Both side portions 7 and 8 of the front and rear waist regions 18 and 20 are formed of a top sheet 2 and a back sheet 3 that extend outward from the both side edges of the core 4 in the waist direction. For fixing these side portions 7 and 8, fusion means such as heat sealing or ultrasonic bonding is used.
[0017]
The joining area 11 includes a first heat-sealing line forming area 13 (first area) in which a plurality of first heat-sealing lines 12 are arranged in the vertical direction between the trunk periphery opening 5 and the leg periphery opening 6. 1 region), and a plurality of second heat-sealing wires 14 that are located in the upper portion 11a and the central portion 11b of the joining region 11 and are intermittently arranged in the vicinity of the inside of the first heat-welding wire 12 in the vertical direction. The second heat-sealing line forming region 15 (second region) is formed. In the joining area 11, the lower end 14a of the second heat-sealing wire 14 located at the lowermost part of the center portion 11b and the inner end 12a of the first heat-sealing wire 12 adjacent thereto are close to each other. , 14 are substantially connected to the inner end 12a and the lower end 14a.
[0018]
The first heat-sealing line 12 extends in the vicinity of the outer edges 9 and 10 of the side portions 7 and 8 in the circumferential direction. The dimension L2 of the first heat-sealing line 12 located in the lower portion 11c of the joining area 11 in the waist direction is the waist-direction of the first heat-sealing line 12 located in the upper part 11a and the central part 11b of the joining area 11. Longer than that. It is preferable that the dimension L1 of the 1st heat-fusion line 12 located in the upper part 11a and the center part 11b of the joining area | region 11 exists in the range of 2-5 mm, and is located in the lower part 11c of the joining area | region 11. It is preferable that the dimension L2 of the 1st heat sealing | fusion line 12 of the trunk periphery direction exists in the range of 5-10 mm. It is preferable that the longitudinal distance L3 between the first heat-sealing wires 10 adjacent to each other is in the range of 0.05 to 1 mm.
[0019]
The second heat-sealing line 14 extends in the vertical direction so as to draw a substantially square shape toward the waist. The second heat-sealing line 14 has a vertical dimension L4 that extends over substantially four strips of the first heat-sealing line 12 adjacent in the vertical direction. The 2nd heat-sealing line 14 should just have the vertical dimension L4 which straddles at least 2 stripes of the 1st heat-sealing line 12 adjacent to a vertical direction, and the vertical dimension L4 exists in the range of 2-15 mm. It is preferable. It is preferable that the vertical separation dimension L5 of the second heat-sealing wires 14 adjacent to each other is in the range of 0.3 to 2 mm. The second heat fusion line 14 located in the upper part 11a of the joining region 11 preferably has an opening angle θ1 in the range of 30 to 90 °, and the second heat fusion wire located in the central portion 11b of the joining region 11. The line 14 preferably has an opening angle θ2 in the range of 15 to 60 °.
[0020]
In the diaper 1 </ b> A, as shown in FIG. 3, by pulling the front and rear waist areas 19 and 20 in the direction of arrow Z, the side parts 7 and 8 are torn in the vertical direction from the waist opening 5 to the leg opening 6. be able to. In the upper part 11a and the center part 11b of the joining area | region 11, the side parts 7 and 8 are torn in a zigzag along the periphery of the 2nd heat-sealing line 14 connected to a vertical direction. In the lower part 11c of the joining area | region 11, the side parts 7 and 8 are torn along the periphery of the 1st heat-sealing line 12 located in a line with a vertical direction.
[0021]
In the joining region 11, the density per unit area of the first heat-sealing wire 12 is higher than that per unit area of the second heat-sealing wire 14, and the tear strength of the first heat-sealing wire forming region 13 is the first. 2 It is larger than that of the heat fusion line forming region 15. In the diaper 1 </ b> A, when the fibers and polymers forming the front and back sheets 2, 3 are oriented in the waist circumference direction, when tearing the side parts 7, 8, the tear line becomes the outer edge 9 of the side parts 7, 8. , 10 may be run. However, in the diaper 1 </ b> A, the tear line is prevented from running to the outer edges 9 and 10 by the first heat-sealing line forming region 13 having a high tear strength, and the tear line does not reach the outer edges 9 and 10.
[0022]
In the diaper 1 </ b> A, after the tear line toward the outer edges 9, 10 reaches the first heat-seal line forming region 13, the tear line is changed from the first heat-seal line formation region 13 to the second heat-seal line formation region 15. Then, the side portions 7 and 8 are torn along the second heat-sealing line 14 in the longitudinal direction again.
[0023]
In the diaper 1A, the lower end 14a of the second heat-sealing wire 14 located at the lowermost center portion 11b of the joining area 11 and the inner end 12a of the first heat-sealing wire 12 adjacent thereto are substantially connected. The tear line does not run from the lower end 14a toward the inner end 12a, and the tear line does not run inward in the waist direction of the diaper 1A. In the diaper 1 </ b> A, the side portions 7 and 8 can be smoothly torn in the longitudinal direction in the joining region 11.
[0024]
At the periphery of the waist opening 5, a plurality of waist elastic members 16 extending in the waist direction are interposed between the top sheet 2 and the back sheet 3, and are stretched on the inner surfaces of the sheets 2 and 3. It is attached. At the periphery of the leg opening 6, a plurality of leg elastic members 17 extending in the leg direction are interposed between the top sheet 2 and the back sheet 3, and are extended on the inner surfaces of the sheets 2 and 3. It is attached. In FIG. 1, the elastic members 16 and 17 are contracted, and a large number of gathers are formed along the periphery of the waist opening 5 and the periphery of the leg opening 6.
[0025]
4 and 5 are partial perspective views of diapers 1B and 1C showing another embodiment. The diaper 1B of FIG. 4 is different from that of FIG. 1 in that both side portions 7 of the front waist region 18 are bent inward in the waist direction in a state where the outer surfaces of the topsheet 2 are in contact with each other. There is. The diaper 1C of FIG. 5 is different from that of FIG. 1 in that both sides 7 and 8 of the front and rear waist regions 18 and 20 are folded inward in the waist direction with the outer surfaces of the topsheet 2 being in contact with each other. It is in the song.
[0026]
In these diapers 1 </ b> B and 1 </ b> C, the first heat fusion line 12 located in the upper part 11 a and the central part 11 b of the joining area 11 and a part of the first heat fusion line 12 located in the lower part 11 c of the joining area 11 are both sides. The second heat-sealing wire 14 extends in the vicinity of the inner side of the bent portion 21. The first heat-sealing wires 12 extend in the vicinity of the outer edges 9 and 10 in the circumferential direction and are closely arranged in the vertical direction. The second heat-sealing line 14 extends in the longitudinal direction so as to draw a substantially square shape toward the trunk periphery in the upper part 11a and the central part 11b of the joining region 11.
[0027]
In these diapers 1B and 1C, since the side portions 7 and 8 are fixed in a triple or quadruple state at the bent portion 21, the tear strength of the first heat-sealing line forming region 13 is shown in FIG. It can be made larger than that, and when the side portions 7 and 8 are torn, it is possible to reliably prevent the tear line from reaching the outer edges 9 and 10 in the first heat-sealing line forming region 13.
[0028]
In these diapers 1B and 1C, even if the tear line runs toward the outer edges 9 and 10, the tear line that has reached the first heat-seal line formation region 13 returns to the second heat-seal line formation region 15 again, It does not reach the outer edges 9,10.
[0029]
6 and 7 are partial perspective views of diapers 1D and 1E showing another embodiment. The diaper 1D in FIG. 6 is different from that in FIG. 1 in that the second heat-sealing line 14 in the upper part 11a and the central part 11b of the joining region 11 is formed in a vertical direction so as to form a substantially V-shape toward the waist. It is to extend to. The first heat-sealing wires 12 extend in the vicinity of the outer edges 9 and 10 in the circumferential direction and are closely arranged in the vertical direction. The vertical dimension of the second heat-sealing wire 14 is preferably in the range of 5 to 15 mm. The vertical separation distance of the second heat-sealing line 14, the opening angle of the second heat-sealing line 14 located in the upper part 11 a of the joining area 11, and the second heat-sealing line located in the central part 11 b of the joining area 11. The opening angle of 14 is preferably in the same range as that of FIG.
[0030]
In this diaper 1D, the side portions 7 and 8 are split in a zigzag manner along the peripheral edge of the second heat-sealing line 14 in the upper portion 11a and the central portion 11b of the joining region 11, and the lower portion of the joining region 11 is formed. In 11c, the side parts 7 and 8 are torn along the peripheral edge of the first heat-sealing line 12 aligned in the vertical direction.
[0031]
The diaper 1E of FIG. 7 is different from that of FIG. 1 in that the second heat-sealing line 14 is substantially inward in the waist direction and outward in the waist direction in the upper part 11a and the central part 11b of the joining region 11. In other words, it extends in the vertical direction so as to draw an arc. The first heat-sealing wires 12 extend in the vicinity of the outer edges 9 and 10 in the circumferential direction and are closely arranged in the vertical direction. The vertical dimension of the second heat-sealing wire 14 is preferably in the range of 5 to 15 mm. The vertical separation dimension of the second heat-sealing wire 14 is preferably in the same range as that of FIG.
[0032]
In this diaper 1E, the side parts 7 and 8 are torn along the peripheral edge of the second heat-sealing line 14 in the vertical direction at the upper part 11a and the central part 11b of the joining area 11, and the joining area 11 In the lower part 11c, the side parts 7 and 8 are torn along the peripheral edge of the first heat-sealing line 12 arranged in the vertical direction.
[0033]
In the illustrated diapers 1 </ b> A to 1 </ b> E, the second heat-sealing wire 14 is substantially arc-shaped or substantially V-shaped toward the waist, or substantially arcs toward the waist. Although extended, the 2nd heat-sealing line 14 may be extended substantially linearly to the vertical direction.
[0034]
For the topsheet 2, a hydrophilic fiber nonwoven fabric or a plastic film having a large number of fine holes can be used. For the back sheet 3, a hydrophobic fiber nonwoven fabric, a liquid-impervious plastic film, a two-layer nonwoven fabric obtained by superimposing the hydrophobic fiber nonwoven fabric, or a composite sheet in which a plastic film is fixed to the hydrophobic fiber nonwoven fabric is used. be able to.
[0035]
For the back sheet 3, a composite nonwoven fabric obtained by sandwiching a fiber nonwoven fabric by a melt blown method having high water resistance between fiber nonwoven fabrics by a spunbond method having high strength and high flexibility can also be used.
[0036]
As a nonwoven fabric, what was manufactured by each manufacturing method of a spunlace, a needle punch, a melt blown, a thermal bond, a spun bond, a chemical bond, and an air through can be used. As a constituent fiber of the nonwoven fabric, polyolefin-based, polyester-based, polyamide-based fibers, polyethylene / polypropylene, or core-sheath type composite fibers or parallel type composite fibers made of polyethylene / polyester can be used.
[0037]
The core 4 is a mixture of fluff pulp and superabsorbent polymer particles, or a mixture of fluff pulp, superabsorbent polymer particles and thermoplastic synthetic resin fibers, and is compressed to a required thickness. The core 4 is preferably entirely covered with tissue paper in order to prevent the polymer particles from falling off or out of shape. As the polymer particles, starch-based, cellulose-based or synthetic polymer-based particles can be used.
[0038]
【The invention's effect】
According to the pants-type disposable diaper according to the present invention, even when the tear line runs toward the outer edges of the sides when tearing the both sides of the front and rear waist area, the tear line runs to the outer edges. One region prevents it from reaching the outer edge. In this diaper, after the tear line toward the outer edge reaches the first region, the tear line returns from the first region to the second region, and both side portions again tear in the longitudinal direction along the second heat fusion line. go. In this diaper, both sides can be smoothly torn in the longitudinal direction in the joining region.
[0039]
In a diaper in which the lower end of the second heat fusion line located at the lowermost center of the joining area and the inner end of the first heat fusion line adjacent thereto are substantially connected, the tear line is the second heat fusion line. It runs from the lower end toward the inner end of the first heat-sealing line, and the tear line does not run inward around the waist of the diaper, and the two sides at the lower part of the joint area are torn smoothly. Can do.
[0040]
The first heat-sealing line located at the upper part and the central part of the joining area and the first part located at the lower part of the joining area are bent at both sides in at least one of the front and rear waist areas toward the inside of the waist of the diaper. In the diaper in which a part of one heat-sealing line extends to the bent portions on both sides, the diapers are fixed in a state where both sides are triple or quadrupled at the bent portions. The tear strength can be further increased, and the tear line can be reliably prevented from reaching the outer edges of the side portions in the first region.
[Brief description of the drawings]
FIG. 1 is a perspective view of a diaper partially cut away.
FIG. 2 is a partial perspective view of a diaper.
FIG. 3 is a partial perspective view of a diaper shown in a state in which a side portion is torn in a vertical direction.
FIG. 4 is a partial perspective view of a diaper showing another embodiment.
FIG. 5 is a partial perspective view of a diaper showing another embodiment.
FIG. 6 is a partial perspective view of a diaper showing another embodiment.
FIG. 7 is a partial perspective view of a diaper showing another embodiment.
[Explanation of symbols]
1A to 1E Pants-type disposable diaper 5 Trunk opening 6 Leg opening 7 Both sides 8 Both sides 9 Outer edge 10 Outer edge 11 Joint area 11a Upper part 11b Central part 11c Lower part 12 First heat-sealing line 12a Inner end 13 First heat Fusion wire forming region (first region)
14 Second heat fusion line 14a Lower end 15 Second heat fusion line formation region (second region)
18 Front waistline area 19 Inseam area 20 Rear waistline area 21 Folding part L4 Vertical dimension

Claims (5)

互いに対向する前胴周り域および後胴周り域と、それら胴周り域の間に位置する股下域とを備え、前記前後胴周り域の互いに重なり合う両側部が縦方向へ延びる接合域を介して連結され、胴周り開口と一対の脚周り開口とが画成されたパンツ型の使い捨ておむつにおいて、
前記接合域は、前記両側部の外縁近傍を胴周り方向へ延びていて前記胴周り開口と前記脚周り開口との間を前記縦方向へ密集して並ぶ複数条の第１熱融着線が形成された第１領域と、前記接合域の上部と中央部とに位置して前記第１熱融着線の内側近傍を前記縦方向へ間欠的に並ぶ複数条の第２熱融着線が形成された第２領域とからなり、前記第２熱融着線が、前記縦方向へ延びるとともに、該縦方向に隣り合う前記第１熱融着線の少なくとも２条に跨る縦寸法を有し、
前記接合域の上部と中央部とでは、前記両側部が前記第２熱融着線に沿って前記縦方向へ引き裂き分離可能であり、前記接合域の下部では、前記両側部が前記第１熱融着線に沿って前記縦方向へ引き裂き分離可能であることを特徴とする前記おむつ。The front waist region and the rear waist region that face each other, and a crotch region positioned between the waist regions, and the two sides of the front and back waist regions that overlap each other are connected via a joint region that extends in the vertical direction. In a pants-type disposable diaper in which a waist opening and a pair of leg openings are defined,
The joint region includes a plurality of first heat-sealing lines extending in the trunk direction in the vicinity of the outer edges of the both side portions and closely arranged in the vertical direction between the trunk opening and the leg opening. A plurality of second heat-sealing lines, which are located in the formed first region, and at the upper and middle portions of the joining area, are arranged in the longitudinal direction intermittently in the vicinity of the inside of the first heat-sealing wire. consists of a formed second regions, the second heat Chakusen is, extends into the longitudinal direction, has a longitudinal dimension extending over at least two rows of said first heat Chakusen adjacent to said longitudinal direction ,
At the upper and middle portions of the joining area, the both side parts can be torn and separated in the longitudinal direction along the second heat-sealing line, and at the lower part of the joining area, the both side parts are separated from the first heat fusion line. The diaper characterized by being tearable and separable in the longitudinal direction along the fusion line. 前記接合域の下部に位置する前記第１熱融着線の胴周り方向の寸法が、前記接合域の上部と中央部とに位置する前記第１熱融着線の胴周り方向のそれよりも長く、前記接合域の中央部最下に位置する前記第２熱融着線の下端とそれに隣り合う前記第１熱融着線の内端とが実質的につながっている請求項１記載のおむつ。  The size of the first heat-sealing line located in the lower part of the joining area is larger than that of the first heat-welding line located in the upper part and the central part of the joining area. 2. A diaper that is long and substantially connects a lower end of the second heat-sealing line located at the lowermost center of the joining area and an inner end of the first heat-sealing line adjacent thereto. . 前記前後胴周り域の少なくとも一方における両側部が、前記おむつの胴周り方向内方へ向かって折曲され、前記接合域の上部および中央部に位置する前記第１熱融着線と前記接合域の下部に位置する前記第１熱融着線の一部とが、前記両側部の折曲部位に延び、前記第２熱融着線が、前記折曲部位の内側近傍に延びている請求項２記載のおむつ。  The first heat-sealing line and the joining area, which are located in the upper part and the center part of the joining area, in which both side parts in at least one of the front and rear waist areas are bent inwardly in the trunk surrounding direction. A part of the first heat-sealing line located at a lower portion of the first and second heat-sealing lines extends to a bent portion of the both side portions, and the second heat-sealing line extends to the inside of the bent portion. 2 diapers. 前記第２熱融着線が、前記おむつの胴周り方向へ向かって略Ｖ字状または略ハの字状を画いて延びている請求項１ないし請求項３いずれかに記載のおむつ。  The diaper according to any one of claims 1 to 3, wherein the second heat-sealing line extends in a substantially V shape or a substantially C shape toward the circumference of the waist of the diaper. 前記第２熱融着線が、前記おむつの胴周り方向へ向かって実質的に弧を画いて延びている請求項１ないし請求項３いずれかに記載のおむつ。  The diaper according to any one of claims 1 to 3, wherein the second heat-sealing line extends substantially in an arc toward the waist of the diaper.
JP2001081604A 2001-03-21 2001-03-21 Pants-type disposable diapers Expired - Fee Related JP3737709B2 (en)

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JP3706553B2 (en) * 2001-07-12 2005-10-12 ユニ・チャーム株式会社 Pants-type disposable diapers
EP2092923B1 (en) 2006-12-08 2013-08-07 Uni-Charm Corporation Absorptive article
JP4939982B2 (en) * 2007-03-06 2012-05-30 白十字株式会社 Disposable absorbent article
AR074979A1 (en) * 2008-12-25 2011-03-02 Uni Charm Corp PUMP TYPE GARMENT
JP5448513B2 (en) * 2009-03-23 2014-03-19 花王株式会社 Pants-type absorbent article
JP5566782B2 (en) * 2010-01-08 2014-08-06 ユニ・チャーム株式会社 Disposable wearing items
JP2011147495A (en) * 2010-01-19 2011-08-04 Livedo Corporation Pants type disposable diaper
JP5695320B2 (en) * 2010-01-21 2015-04-01 ユニ・チャーム株式会社 Pants-type disposable wearing articles
JP5566833B2 (en) * 2010-09-28 2014-08-06 大王製紙株式会社 Pants-type disposable diaper
JP5438139B2 (en) 2012-01-20 2014-03-12 大王製紙株式会社 Pants-type disposable diaper
JP6095212B2 (en) * 2012-12-27 2017-03-15 花王株式会社 Pants-type absorbent article
JP5360327B1 (en) * 2013-06-03 2013-12-04 王子ホールディングス株式会社 Pants-type disposable diaper and method for manufacturing the same
JP6195302B2 (en) * 2013-11-18 2017-09-13 花王株式会社 Pants-type absorbent article
JP5895019B2 (en) * 2014-04-28 2016-03-30 ユニ・チャーム株式会社 Pants-type absorbent article
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JP6583854B2 (en) * 2015-09-29 2019-10-02 大王製紙株式会社 Pants-type disposable diaper
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JP6708723B2 (en) * 2018-11-15 2020-06-10 花王株式会社 Pants-type disposable diaper

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2531924B2 (en) * 1993-05-26 1996-09-04 トーヨー衛材株式会社 Disposable pants
JPH07213553A (en) * 1994-02-04 1995-08-15 New Oji Paper Co Ltd Shaped panty-type disposable diaper
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