CN1236744C - 一次性尿布 - Google Patents

一次性尿布 Download PDF

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CN1236744C
CN1236744C CNB991050967A CN99105096A CN1236744C CN 1236744 C CN1236744 C CN 1236744C CN B991050967 A CNB991050967 A CN B991050967A CN 99105096 A CN99105096 A CN 99105096A CN 1236744 C CN1236744 C CN 1236744C
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佐佐木彻
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Abstract

一次性尿布，能够使腿侧边缘弹性伸缩部件不受芯材束缚地伸缩。覆盖在芯材(4)上表面(17)的表面片材(2)沿芯材(4)的侧面(23)弯曲并覆盖芯材(4)的下表面(18)。在芯材(4)的下表面侧，在比芯材(4)的侧面(23)更靠近尿布中心线(C-C)的位置上，表面片材(2)和底面片材(3)接合。腿侧边缘弹性伸缩部件(37)在芯材(4)的侧面(23)附近，装于底面片材(3)上。

Description

一次性尿布
技术领域
本发明涉及一种一次性尿布。
背景技术
日本特公昭52-40267号公报中公开了一种一次性尿布，它是通过将吸液性芯材装在透液性表面片材和不透液性底面片材之间、并将由芯材周缘延伸出的表面、底面片材相互接合而成。在这种尿布中，侧缘部分设置朝前后方向延伸的弹性伸缩部件，该部件的弹性伸缩丝与芯材的边缘至少隔开1.91cm。
在前述特公昭52-40267号公报中教导说，腿侧缘弹性部件为了不受刚性芯材束缚，与芯材的边缘隔开1.91cm以上。根据此教导，芯材的刚性越高，希望与弹性部件的隔开距离越大，但这样的话，就会有使尿布裆下区域的宽度过大的情况。
发明内容
本发明的目的是以不致由于芯材的刚性而束缚腿侧边缘弹性部件的伸缩性的方式构成尿布。
为实现前述目的，本发明的尿布的前提是具有透液性表面片材，不透液性底面片材，和介于这两者之间的吸液性芯材，由前腰围区域、后腰围区域和位于这两区域之间的裆下区域构成前后方向，沿着以所述裆下区域为中心的所述前后方向延伸的腿侧边缘弹性伸缩部件设置在左右的侧缘部。
在此前提的基础上，本发明的特征在于，所述芯材在以所述裆下区域为中心的所述前后腰围区域之间延伸；具有位于尿布穿用者肌肤侧的上表面，与所述上表面的相对的下表面和位于这两表面之间、沿腰围延伸的前后端面和沿前后方向延伸的两侧面；被覆盖在所述芯材上表面的表面片材沿所述芯材的两侧面朝所述芯材的下表面弯折，至少覆盖住该下表面的一部分；所述底面片材位于比沿所述下表面弯折部分的表面片材更下方，并从所述芯材向外延伸出；所述向下表面侧弯折部分的表面片材，在比所述芯材的侧面更靠近等分尿布宽度方向的中心线的位置上与所述底面片材接合；所述腿侧边缘弹性伸缩部件在所述芯材的附近，安装在所述底面片材上。
在本发明的一个较佳实施例中，所述腿侧边缘弹性伸缩部件在所述尿布的裆下区域，位于由所述芯材的侧面朝尿布宽度方向向内10mm、朝外方30mm的范围内。
在另一实施例中，在所述底面片材的内表面，形成防漏翻边，翻边的可自由变形的自由缘部在所述芯材的各侧面的外侧沿所述尿布的前后方向延伸，所述防漏翻边具有在所述芯材的侧面的外侧和内侧任一个上、固定于所述底面片材内表面上、沿所述前后方向延伸的基端部，所述自由缘部的顶缘上装有朝所述前后方向伸长的弹性伸缩部件，所述防漏翻边具有从所述底面片材内表面立起的性能。
附图说明
图1是尿布的局剖透视图，
图2示出沿图1中II-II线的剖视图，
图3示出一实施例的与图2相同的视图，
图4示出实施例另一例的与图1相同的视图，
图5示出沿图4中V-V线的剖视图。
具体实施方式
下面，参照附图，对本发明的一次性尿布加以详细说明。
图1的局剖透视图中示出的尿布1具有透液性表面片材2，由表面片材2覆盖着的吸液性芯材4，和沙漏时计型不透液性底面片材3，前后方向由前腰围区域6，后腰围区域7，和位于这两区域6，7之间的裆下区域8构成。
芯材4通过用薄绵纸12覆盖吸液材11而成，吸液材11由粉碎纸浆和高吸水性聚合物粒子的混合物构成，以裆下区域8为中心朝前后腰围区域6，7方向延伸。芯材4的外形大致呈矩形或沙漏时计型，具有位于尿布穿用者肌肤侧的上表面17，作为上表面17相反面的下表面18(见图2)，介于这两面17，18之间并沿腰围方向延伸的前后端面21，22，和沿前后方向延伸的左右侧面23。
表面片材2覆盖芯材4的上表面17，沿侧面23弯曲并沿着下表面18的宽度方向向内延伸，重合于芯材4中心线C-C附近(见图2)。表面片材2分别在芯材4的上下表面17，18上，从芯材4的前后端面21，22朝前后方向延伸，表面片材2彼此在部位26，27重合、相互接合。
底面片材3是经粘合剂10(见图2)将不透液性塑料薄膜构成的内层片材28与无纺布构成的外层片材29粘成的层积片，位于在芯材4下表面侧弯折的表面片材2的下方。底面片材3从芯材4的前后端面21，22和左右端面23向外方延伸出，形成朝腰围方向延伸的前后端缘部31，32和朝前后方向延伸的侧缘部33。在后端缘部32和侧缘部33上，内外层片材28，29之间设有腰围弹性伸缩部件36和腿侧边缘弹性伸缩部件37，这些部件36，37与内外层片材28，29的至少一方的内表面接合。底面片材3的后腰围区域7的左右侧缘部33上装有固定带扣38。
在图2中，示出沿图1中II-II线的剖视图。由表面片材2覆盖的尿布4的下表面18是在中央区域经粘合剂39与底面片材3接合的，但侧面23的附近不与底面片材3接合，在与片材3之间能够形成空隙41。在尿布1的前后方向，粘合剂39的涂布区域连续或断续地延伸，一直到达芯材4的前后端面21，22，或它们附近。在尿布裆下区域8的宽度方向，粘合剂39的涂布区域距离芯材4的侧面23的距离L为15mm以上，最好是20mm以上。同样，在裆下区域8的宽度方向上，腿侧边缘弹性伸缩部件37位于从芯材4的侧面23朝向尿布1内方的中心线C-C方向为10mm，朝向外方为30mm的范围A内。在芯材4的前后端面21，22的附近，芯材4的宽度方向全体可以经表面片材2而与底面片材3接合。
在这样构成的尿布1中，腿侧边缘弹性伸缩部件37能够几乎不受芯材4的刚性束缚地自由伸缩。因而，即使芯材4具有比较高的刚性，腿侧边缘弹性伸缩部件37配置于芯材4的附近，能够防止***物横向泄漏。这样的尿布因为裆下区域8的宽度不宽，穿着感好。另外，在这种尿布1中，在芯材4的侧面23附近，由于芯材4的下表面侧也可吸收***物，与以往那种主要由芯材的上表面和侧面吸收***物时的尿布相比，能直接吸收***物的、芯材4的表面积变大，可快速吸收***物。
图3示出本发明一实施例的、与图2相同的视图。在该尿布1中，从芯材4的下表面侧延伸的、表面片材2的两侧缘部分2A彼此不重合，通过粘合剂39与底面片材3接合。腿侧边缘弹性伸缩部件37位于芯材4的比侧面23更内方和外方。位于比侧面23还内的腿侧弹性伸缩部件37A的作用是，将芯材4密贴到穿用者的肌肤上。
图4示出本发明另一实施例的、与图1相同的视图，图5示出沿图4中V-V线的剖视图。这种尿布1具有在侧缘部32中、沿以裆下区域8作为中心的前后腰围6，7方向延伸的防漏翻边46。翻边46由于是由无纺布、最好是实质上不透液性的无纺布、更好是通气·不透液性的无纺布构成，经粘合剂52接合到底面片材3的内表面上，翻边有沿前后方向延伸的基端缘部47，并排于基端缘部、装有沿前后方向扩张的弹性伸缩部件48的自由缘部49，和位于这两缘部47，49之间的中间区域51。基端缘部47在芯材4的比侧面23更内方或外方、最好是内方上与底面片材3接合。图示的基端缘部47位于比侧面23更内方，与芯材4的下表面18之间形成槽53。翻边46的前后两端部56，57朝向尿布1的外方或内方倒伏，倒伏时与相接触的表面片材2和/或底面片材3接合。但是，图4中示出的是这两端部56，57朝尿布1的内方倒伏时的翻边46。穿用如此尿布1时，使芯材4处于内侧并在前后方向弯曲时，弹性伸缩部件48收缩，翻边46由尿布1的内表面立起，成为图5假想线所示的状态。在尿布1中，沿宽度方向流出的***物被翻边46阻止。***物沿翻边46流向芯材4的下表面侧，经表面片材2，由下表面18吸收。若采用这样的尿布1，与图1所示的相比，***物能更确实地流向芯材4的下表面侧。
在本发明中，对于表面片材2，可以使用无纺布或开孔的塑料薄膜。对于尿布1的各部件的接合可以使用热熔胶等粘合剂。部件为热熔融性部件时，可以使用粘接技术。
本发明的一次性尿布是使吸液性芯材的侧缘部离开底面片材，底面片材的腿侧边缘弹性伸缩部件能够不受芯材束缚地伸缩。在这种尿布中，即使芯材的刚性高，由于腿侧边缘部件能够配置在芯材的侧面附近，因而尿布裆下区域的宽度不会变宽。
另外，在这种尿布中，由于也能从芯材的下表面侧吸收***物，不仅提高了芯材的吸收速度，滞留在芯材侧缘部的***物也能迅速地吸收，能够防止***物横向泄漏。

Claims (2)

1.一种一次性尿布，具有透液性表面片材，不透液性底面片材，和介于这两片材之间的吸液性芯材，由前腰围区域、后腰围区域和位于这两区域之间的裆下区域构成前后方向，沿着以所述裆下区域为中心的所述前后方向延伸的腿侧边缘弹性伸缩部件配置在左右的侧缘部上，其特征在于，
所述芯材在以所述裆下区域为中心的所述前后腰围区域之间延伸，具有位于尿布穿用者肌肤侧的上表面，与为所述上表面的反面的下表面，位于这两表面之间、沿腰围延伸的前后端面和沿前后方向延伸的两侧面，
被覆盖在所述芯材上表面的表面片材沿所述芯材的两侧面朝所述芯材的下表面弯折，至少覆盖住该下表面的一部分，
所述底面片材位于比所述向下表面侧弯折部分的表面片材更下方，并从所述芯材向外延伸出，
所述向下表面侧弯折部分的表面片材，在比所述芯材的侧面更靠近等分尿布宽度方向的中心线的位置上与所述底面片材接合，
所述腿侧边缘弹性伸缩部件安装在所述底面片材上，该腿侧边缘弹性伸缩部件在所述尿布的裆下区域，位于由所述芯材的侧面朝尿布宽度方向向内10mm、朝外方30mm的范围内。
2.按照权利要求1所述的尿布，其特征在于，在所述底面片材的内表面，形成防漏翻边，该防漏翻边的可自由变形的自由缘部在所述芯材的各侧面的外侧沿所述尿布的前后方向延伸，所述防漏翻边具有在所述芯材的侧面的外侧和内侧任一个上、固定于所述底面片材内表面上、沿所述前后方向延伸的基端部，所述自由缘部的顶缘上装有朝所述前后方向伸长的弹性伸缩部件，所述防漏翻边具有从所述底面片材内表面立起的性能。
CNB991050967A 1998-04-20 1999-04-20 一次性尿布 Expired - Lifetime CN1236744C (zh)

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JP3330076B2 (ja) 2002-09-30
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CA2269452A1 (en) 1999-10-20
MY126468A (en) 2006-10-31
JPH11299826A (ja) 1999-11-02
EP0951886B1 (en) 2004-07-14
CA2269452C (en) 2003-06-17
US6238380B1 (en) 2001-05-29
KR19990083327A (ko) 1999-11-25
DE69918591T2 (de) 2005-03-17
AU2383199A (en) 1999-10-28
AU751137B2 (en) 2002-08-08
CN1234217A (zh) 1999-11-10

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