CN1288717A - 一次性使用尿布 - Google Patents

一次性使用尿布 Download PDF

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CN1288717A
CN1288717A CN00127060A CN00127060A CN1288717A CN 1288717 A CN1288717 A CN 1288717A CN 00127060 A CN00127060 A CN 00127060A CN 00127060 A CN00127060 A CN 00127060A CN 1288717 A CN1288717 A CN 1288717A
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leakage layers
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三嶋祥宜
丹治浩之
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Unicharm Corp
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
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    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49473Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means having a continuous closed form, e.g. circle, ellipse, rectangle
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent 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
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/495Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity

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Abstract

为提供可防止排泄的尿与便相混的使用舒适的一次性使用尿布,在由芯4夹在顶层2与背层3间、具有在顶层2外面环状延伸着第一防漏层5的片体1构成的尿布中,在第一防漏层5大致中央部形成第一开口部8,第一防漏层5位于片体1的后半部分1e,与第一防漏层5并存环状延伸的第二防漏层6位于片体1前半部分1d;第二防漏层6大致中央部形成第二开口部9,排泄于第二开口部9内的尿通过顶层2为芯4吸收,排泄于第一开口部8中的大便通过顶层为芯4吸收。

Description

一次性使用尿布
本发明涉及吸收、保持所排泄的体液的一次性使用尿布。
日本专利特开平5-277149号公报展示了一次性使用尿布,它具有透液性顶层、不透液性背层、夹在两层间的吸液性芯、位于顶层外面并环状延伸的阻液性防漏层,防漏层外周缘部接合于顶层上面并在防漏层大致中央部形成向纵向长的开口部,在防漏层开口部周缘部安装着向纵向伸缩的弹性构件。该尿布由于在顶层上面安装着成环状延伸的防漏层,可以防止排泄物从尿布两侧缘部与前后端缘部漏出。
特开平5-277149号公报所展示的尿布,由于不能分离排泄于开口部内的尿与大便,往往是在顶层上面流动的尿与软便、水样便相混合,即使是固形大便也会与尿混合变成软便。在尿便混合物附着于穿用者皮肤上情况下,穿用者很不舒服。
本发明的课题即在于提供可以防止排泄的尿便从尿布两侧缘部和前后端缘部漏出,并防止尿便混合、使用舒适的一次性使用尿布。
为解决前述课题的本发明的一次性使用尿布,它由叠层片体构成,该片体是有透液性顶层、不透液性背层、夹于上述两层间的吸液性芯、在前述顶层外面成环状延伸的阻液性第一防漏层;前述层片具有相互相对并沿纵向延伸的两侧缘部、和相互相对并沿横向延伸的前后端缘部;前述第一防漏层的外周缘部固定于前述片体并在前述第一防漏层大致中央部形成第一开口部,前述第一防漏层内周缘部沿前述第一开口部具有弹性伸缩性。其特征还在于,前述第一防漏层位于在将前述片体两侧缘部间尺寸沿前述纵向一分为二的横中心线的近旁与前述片体后端缘部间延伸的后半部分;与前述第一防漏层并存呈环状延伸的阻液性第二防漏层位于在前述横中心线与前述片体前端缘部间延伸的前半部;前述第二防漏层的外周缘部固定于前述片体上并在前述第二防漏层大致中央部形成第二开口部,前述第二防漏层的内周缘部沿前述第二开口部具有弹性伸缩性。
作为本发明一实施例,围绕前述第一防漏层与前述第二防漏层环状地延伸的第三防漏层位于前述片体的前半部分与后半部分;前述第三防漏层的外周缘部固定于前述片体的周缘部并在前述第三防漏层大致中央部形成第三开口部,前述第三防漏层的内周缘部沿前述第三开口部具有弹性伸缩性。
作为本发明的另一实施例,前述第一防漏层与前述第三防漏层的外周缘部位于比前述第三防漏层外周缘部更前述片体内侧,在前述第一、第二防漏层外周缘部与前述第三防漏层外周缘部间露出前述顶层。
作为本发明又一实施例,前述第一防漏层与前述第二防漏层内周缘部位于比前述第三防漏层内周缘部更前述片体内侧,前述第一开口部与前述第二开口部的全区域从前述第三开口部露出来。
作为本发明的再一实施例,前述第一~第三防漏层由无纺布形成,前述第一~第三防漏层的耐水压力为前述第一防漏层>前述第二防漏层大于或等于前述第三防漏层的关系。
图1是一次性使用尿布局部剖视立体图;图2是表示图1的A-A剖切的尿布立体图;图3是表示图1的B-B剖切的尿布立体图;图4是图1的C-C剖视图;图5是与图1不同形式的尿布立体图;图6是表示图5的D-D剖切的尿布立体图;图7是表示图5的E-E剖切的尿布立体图;图8是图5的F-F剖视图。
发明的实施例
以下,参照附图,详细说明本发明的一次性使用尿布。
图1是一次性使用尿布局部剖视立体图。尿布由叠层片体1构成;该片体具有透液性顶层2、不透液性背层3、夹于顶层2与背层3之间的吸液性芯4、在顶层2外面侧呈环状延伸的阻液性第一防漏层5、在顶层2外面侧与第一防漏层5并存成环状延伸的阻液性第二防漏层6。片体1在纵向上具有前腰围区20、后腰围区22、位于前后腰围区20、22间的裆下区21;它还具有相互相对地纵向延伸的、在裆下区向片体1内方画孤的两侧缘部1a、和相互相对地沿横向延伸的前后端缘部1b、1c。在片体1的两侧缘部1a上安装着相互相对离开的、沿纵向延伸的一对阻液性侧部层17。
第一防漏层5位于片体1的后半部分1e上,该后半部1e延伸于将片体1两侧缘部1a的尺寸沿纵向一分为二的横中心线y近旁与片体1的后端缘部1c之间;它具有环状延伸的外周缘部5a、在外周缘5a内侧沿环状延伸的内周缘部5b、相互抵接地接合起来的纵向两端部5c。
在第一防漏部5的大致中央部,形成了裆下区21的大致一半与后腰围区22的大致一半能露出来的纵向长的第一开口部8。在第一开口部8还露出顶层2。在第一防漏层5的内周缘部5b上于伸长状态下安装着弹性伸缩构件11。
第二防漏层6位于延伸在横中心线y近旁与片体1的前端缘部1b之间的前半部分1d上;它具有环状延伸的外周缘部6a、在外周缘部6a内侧环状延伸的内周缘部6b、相互抵接地接合起来的纵向两端部6c。
在第二防漏部6的大致中央部形成了裆下区21的大致一半与前腰围区20的大致一半能露出来的纵向长的第二开口部9。在第二开口部9中露出顶层2。在第二防漏层6的内周缘部6b上于伸长状态下安装着弹性伸缩构件12。
在片体1的两侧缘部1a中在伸长状态下安装着纵向延伸的腿周用弹性构件14;在片体1的前后端缘部1b、1c中,向横向延伸的膜状腰围用弹性构件15夹于顶层2与背层3之间,并以伸长状态安装于顶层2与背层3中的至少一方的内面上。在后腰围区22的片体1的两侧缘部1a上安装着向横向内方延伸的带状固定件16。
在图1中,安装于第一、第二防漏层5、6上的弹性构件11、12和腿周用弹性构件14、以及腰围用弹性构件15的伸长状态被解除时,沿第一、第二防漏层5、6的内周缘部5b、6b和片体1的两侧缘部1a以及片体1的前后端缘部1b、1c形成折皱。
图2、图3分别是表示图1的A-A剖切的尿布的立体图和表示图1的B-B剖切的尿布的立体图;图4是图1的C-C剖视图。第一防漏层5,其外周缘部5a的一部分在向片体1内方折曲的状态下固定于顶层2的外面上;其内周缘部5b的一部分向片体1内方折曲包覆弹性构件11。在第一防漏层5的纵向两端部5c处,纵向两端部5c的固定区向片体1的纵向外方延伸。
第二防漏层6,其外周缘部6a的一部分在向片体1内方折曲状态下固定于顶层2的外面上,其内周缘部6b的一部分向片体1内方折曲包覆弹性构件12。在第二防漏层6的纵向两端部6c处,纵向两端部6c的固定区向片体1纵向外方延伸。
在将片体1以其内面作为内侧地沿纵向与横向弯曲时,由第一防漏层5与顶层2形成向片体1内方开口的口袋P1;并由第二防漏层6与顶层2形成向片体1内方开口的口袋P2。
在片体1上,顶层2的两侧缘部2a从芯4的两侧缘部4a向横向外方稍稍延伸;背层3的两侧缘部3a与侧部层17从顶层2的两侧缘部2a再向横向外方延伸。顶层2的两侧缘部2a夹于背层3与侧部层17之间,并固定于背层3与侧部层17至少一方的内面上。背层3和侧部17在背层3和侧部层17相互重合部分被固定。在背层3与侧部层17间夹着腿周用弹性构件14,在伸长状态安装于这些层3、17中的至少一方的内面上。芯4则接合于顶层2与背层3中至少一方的内面上。
片体1,在通过涂覆于带状固定件16自由端部内面的粘结剂,将带状固定件16粘固于安装在前腰围区20的背层3外面的目标带上时,即形成左右一对腿周开口与腰围开口(图中未示出)。
片体1,排泄于在其前半部分1d开口的第二开口部9内的尿通过顶层2为芯4所吸收;排泄于在其后半部分1e开口的第一开口部8内的大便通过顶层2也为芯所吸收。第一防漏层5与第二防漏层6由于具有在片体1的前后半部分1d、1e处分开成尿吸收区与大便吸收区的功能,所以第一防漏层5与第二防漏层6成了障壁,可以防止排泄于第一开口部8内的大便侵入到第二开口部9内、或排泄于第二开口部9内的尿侵入第一开口部8内;可以防止尿、便相互混合。在片体1中,由于可将排泄的大便收容于口袋P1中,即使在大量排便的情况下,也可以防止大便侵入第二开口部9中。
在片体1中,由于背层3两侧缘部3a与侧部层17从顶层2的两侧缘部2a向横向外方延伸,即使有尿、便渗入顶层2两侧缘部2a,也不会掺入背层3两侧缘部3a与侧部层17。
图5是与图1不同形式的一次使用尿布的立体图。该尿布,芯4夹于顶层2与背层3间,并由具备有环状延伸的阻液性第一防漏层5和同第一防漏层5并存地环状延伸的阻液性第二防漏层6的叠层片体1所构成,在这一点上与图1的尿布相同。在顶层2外面一侧具有围绕第一防漏层5和第二防漏层6呈环状延伸的第三防漏层7。
第三防漏层7位于片体1的前半部分1d与片体1的后半部分1e中;具有环状延伸的外周缘部7a、在外周缘部7a内侧环状延伸的内周缘部7b、以及相互抵接接合起来的纵向两端部7c。
在第三防漏层7的大致中央部形成了前后腰围区20、22的大致一半和裆下区21露出来的纵向长的第三开口部10。第三防漏层7的内周缘部7b位于第一防漏层5和第二防漏层6的内周缘部5b、6b的外侧;第三开口部10围绕着第一开口部8和第二开口部9。在第三开口部10中,在片体1的前半部1d中第二开口部9的全区;而在片体1的后半部分1e中则露出第一开口部8的全区。在第三防漏层7的内周缘部7b中以伸长状态安装着弹性伸缩性构件13。从第三防漏层7的外周缘部7a向外周缘部7a的周向外方延伸着阻液性支承层18。
在片体1的两侧缘部1a中以伸长状态安装着纵向延伸的腿周用弹性构件14;在片体1的前后端缘部1b、1c中以伸长状态安装着横向延伸的膜状腰围用弹性构件15。在后腰围区22的片体1两侧缘部1a上安装着向横向内方延伸的带状固定件16。
在图5中,在安装于第一~第三防漏层5、6、7上的弹性构件11、12、13与腿周用弹性构件14以及腰围用弹性构件15的伸长状态被解除时,沿第一~第三防漏层5、6、7的内周缘部5b、6b、7b和片体1的两侧缘部1a、以及片体1的前后端缘部1b、1c形成折皱。
图6、7分别是表示图5的D-D剖切的尿布立体图和表示图5的E-E剖切的尿布立体图;图8是图5的F-F剖视图。第一防漏层5,其外周缘部5a的一部分在向片体1内方折曲的状态下固定地顶层2的外面上;而其内周缘5b的一部分向片体1内方折曲并包覆弹性构件11。在第一防漏层5的纵向两端部5c,纵向两端部5c的固定区向片体1的纵向外方延伸。
第二防漏层6,第二防漏层6的外周缘部6a的一部分在向片体1内方曲折状态下固定于顶层2外面上;第二防漏层6的内周缘部6b的一部分向片体1内方折曲并包覆弹性构件12。在第二防漏层6的纵向两端部6c,纵向两端部6c的固定区向片体1的纵向外方延伸。
第三防漏层7,其外周缘部7a的一部分在向片体1内方曲折状态下固定于支承层18的外面上;其内周缘部7b的一部分向片体1内方折曲并包覆着弹性构件13。在第三防漏层7的纵向两端部7c,纵向两端部7c的固定区向片体1的纵向外方延伸。
在片体1上,第一、第二防漏层5、6的外周缘部5a、6a与第三防漏层7的外周缘部7a相互离开,在第一、第二防漏层5、6的外周缘部5a、6a与第三防漏层7的外周缘部7a之间露出着顶层2。片体1,在以其内面作为内侧沿纵向和横向弯曲时,第一防漏层5与顶层2形成向片体1内方开口的口袋P1;第二防漏层6与顶层2形成向片体1内方开口的口袋P2;同时,第三防漏层7与顶层2形成向片体1内方开口的口袋P3。
在片体1上,顶层2的两侧缘部2a从芯4两侧缘部4a向横向外方稍稍延出,顶层2的两端缘部2b从芯4的两端缘部4b向纵向外方稍稍延出。背层3的两侧缘部3a与支承层18从顶层2的两侧缘部2a再向横向外方延出。背层3的两端缘部3b与支承层18从顶层2的两端缘部2b再向纵向外方延出。顶层2的两侧缘部2a与两端缘部2b夹在背层3与支承层18之间,固定于背层3与支承层18中至少一方的内面。这些层3、18在背层3和支承层18互相重合部分固定。在背层3与支承层18之间夹着腿周用弹性构件14与腰围弹性构件15,在伸长状态安装于这些层3、18中的至少一方的内面芯4则接合于顶层2与背层3中的至少一方的内面。
片体1,排泄于在片体1前半部分1d开口的第二开口部9内的尿通过顶层2为芯4吸收;排泄于在片体1后半部分1e中开口的第一开口部8内的大便通过顶层2为芯4吸收。片体1中第一、第二防漏层5、6成为障壁,可防止尿便相混合。
在该片体1中,即使排泄的尿、便从第一防漏层5与第二防漏层6漏出,由于第三防漏层成为障壁,也可以防止排泄物从片体1的两侧缘部1a和前后端缘部1b、1c漏出去。即使在第二开口部9内排泄的尿从第二防漏层6漏出而向片体1后端缘部1c流动的情况下,由于在第一、第二防漏层5、6的外周缘部5a、6a与第三防漏层7的外周缘部7a间可以流动,在片体1的前半部分1d的第二、第三防漏层6、7的外周缘部6a。7a间,和片体1的后半部分1e的第一、第三防漏层5、7的外周缘部5a、7a间也可以将尿吸收。
在片体1中,由于背层3两侧缘部3a与支承层18从顶层2两侧缘部2a向横向外方延伸,背层3的两端缘部3b与支承层18从顶层2的两端缘部2b向纵向外方延伸,即使有尿或便渗入层2的两侧缘部2a和两端缘部2b,也不会渗入背层3的两侧缘部3a与背层3的两端缘部3b以及支承层18。
在顶层2中可使用无纺布或开孔塑料膜等透液性薄片,最好是使用透液性的亲水性薄片;在背层3、侧部层17与支承层18中可使用疏水性无纺布、不透液性塑料膜或疏水性无纺布与塑料膜的叠片层,最好提使用通气不透液性薄片。在第一、二、三防漏层5、6、7中使用通气性无纺布,最好是使用通气不透液性无纺布。
第一~第三防漏层5、6、7的耐水压力成这样的关系:前述第一防漏层5>前述第二防漏层6≥前述第三防漏层7;最好是第一防漏层5的耐水压力在150~500mm范围,第二防漏层6的耐水压力在50~300mm范围,第三防漏层7的耐水压力在40~200mm范围。由于在大便中含有蛋白质与脂肪等有机物较多,和尿比较,其对防漏层表面张力较小。另外,在形成不织布的纤维是聚烯烃系树脂的情况下,由于便中的有机物与聚烯系树脂具有亲和性,与尿相比较大便更易于渗入无纺布。因此,由于大便难以渗入第一防漏层5,与第二、第三防漏层6、7相比,第一防漏层5耐水压更高。
为将防漏层5、6、7的耐水压力提高,可考虑增加形成防漏层5、6、7的纤维的单位面积重量,同时,减小纤维间隙。或考虑以2层以上的无纺布形成防漏层5、6、7。
作为无纺布可使用射流喷网法、针刺法、熔喷法、热粘合法、纺粘型、化学粘合等的无纺布。作为无纺布的构成纤维可使用聚烯烃系、聚酯系、聚酰胺系的各种纤维,聚乙烯/聚丙烯、或聚酯的复合纤维等。
芯4是短纤浆与高吸收性聚合体粒子的混合物,压缩到需要的厚度,整个由薄纸等透水性层(未图示)包覆。作为弹性构件,可使用合成橡胶或天然橡胶等的弹性体,或将这些弹性体在伸长状态下固定于不织布上的弹性构件。为接合芯4、安装弹性构件11、12、13、14、15以及层2、3、4、5、6、7相互固定,除使用热熔粘结剂等粘结剂及粘着剂之外,还可利用热熔敷技术。
本发明除图示的开放型尿布之外,对裤衩型尿布也可实施。
如采用本发明的一次性使用尿布,即使所排泄的尿或大便中的任何一方流动,由于第一、第二防漏层成为障壁,可以防止这些尿便的混合。由于第一防漏层与第二防漏层在顶层上面环状延伸,故可防尿、便从尿布两侧缘部和前后端缘部漏出。
具有围绕着第一、第二防漏层延伸的第三防漏层的尿布,即使有尿、便从第一、第二防漏层漏出,由于第三防漏层成为障壁,可提高防止尿,便漏出的功能。

Claims (5)

1.一种尿布,这种尿布由叠层片体构成,该片体具有透液性顶层、不透液性背层、夹在顶、背层间的吸液性芯、在前述顶层外面中环状延伸的阻液性第一防漏层;前述片体具有相互相对并纵向延伸的两侧缘部、相互相对并横向延伸的前后端缘部;前述第一防漏层的外周缘部固定于前述片体上并在前述第一防漏层大致中央部形成第一开口部,前述第一防漏层的内周缘部沿前述第一开口部具有弹性伸缩性;其特征在于,前述第一防漏层位于延伸在将前述片体两侧缘部间尺寸沿纵向一分为二的横中心线近旁与前述片体后端缘部间的后半部分上;与前述第一防漏层并存环状延伸的阻液性第二防漏层位于延伸在前述槽中心线与前述片体前端缘部间的前半部分;前述第二防漏层的外周缘部固定于前述片体上,并在前述第二防漏层大致中央部形成第二开口部;前述第二防漏层的内周缘部沿前述第二开口部具有弹性伸缩性。
2.如权利要求1所记述的尿布,其特征在于,围绕前述第一防漏层与第二防漏层呈环状延伸的第三防漏层,位于前述片体的前半部分与后半部分上;前述第三防漏层的外周缘部固定于前述片体的周缘部并在前述第三防漏层大致中央部形成第三开口部,前述第三防漏层内周缘部沿前述第三开口部具有弹性伸缩性。
3.如权利要求2所记述的尿布,其特征在于,前述第一防漏层与第二防漏层的外周缘部位于比前述第三防漏层的外周缘部更前述片体的内侧;在前述第一、第二防漏层的外周缘部与前述第三防漏层的外周缘部间露出前述顶层。
4.如权利要求2或3所记述的尿布,其特征在于,前述第一防漏层与第二防漏层的内周缘部位于比前述第三防漏层内周缘部更前述片体内侧;前述第一开口部与前述第二开口部的全区从前述第三开口部露出来。
5.如权利要求1~4中任一项所记的尿布,其特征在于,前述第一~第三防漏层由无纺布形成,前述第一~第三防漏层的耐水压力成前述第一防漏层>前述第二防漏层≥前述第三防漏层的关系。
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