CN1211173A - 含可延伸区的吸湿制品 - Google Patents

含可延伸区的吸湿制品 Download PDF

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CN1211173A
CN1211173A CN96199910A CN96199910A CN1211173A CN 1211173 A CN1211173 A CN 1211173A CN 96199910 A CN96199910 A CN 96199910A CN 96199910 A CN96199910 A CN 96199910A CN 1211173 A CN1211173 A CN 1211173A
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absorbent product
layer
extensible
base structure
absorbent
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CN1253131C (zh
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P·J·瑟比尔克
D·G·乌伊藤布罗伊克
G·L·泽纳
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Kimberly Clark Worldwide Inc
Kimberly Clark Corp
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Abstract

包括可延伸区的吸湿制品。这些可延伸区能使吸湿制品膨胀而能配合众多的不同规格的用户,并能通过在这些区中的伸缩调节腰围与腿围尺寸。体侧衬里层与外罩层最好包括可沿一个方向拉伸而沿另一个方向相应窄缩的纺粘层。上述可延伸区通常包括设在外罩层与体侧衬里层之间且随它们延伸的弹性层。此弹性层可包括弹性膜或弹性材料纤维。体侧衬里层与外罩层之间有吸湿芯。还公开了吸湿制品的形成方法,包括:通过将可延伸的体侧衬里层接附到可延伸的外罩层上同时在这两层之间加入一弹性层而形成基础结构。在另一实施例中,由一批弹性层件来形成许多的可延伸区。在又一实施例中,由打裥的且附着到弹性层与体侧衬里层上的不可延伸层来形成外罩层。在又另一实施例中,由外罩层与体侧衬里层但不带弹性层来形成前述可延伸区。

Description

含可延伸区的吸湿制品
本发明涉及用于包含渗出物的吸湿制品。这种吸湿制品一般应用腿部弹性织品和腰部弹性织品来防止人体渗出物的漏泄。
吸湿制品如婴儿尿布、运动裤、成人失禁用制品等都是周知的。这类制品由于能接收和吸收人体渗出物,获得广泛的认可。
为使吸湿制品能更好地适应不同用户的需要,已有技术已设想过种种途径与方法。例如授予Stevens的美国专利4756709号公开了具有可伸展外罩的,能配合体型的自调节一次性衣着。尽管此外罩是可伸展的,但体侧衬里则非。上述外罩是在固定到体侧衬里上之前预拉伸的。
授予Wilson等人的美国专利4704114号与上述美国专利4756709类似,只是这种衣着可沿两个方向作弹性伸展。
授予Wood等的美国专利4857067号所公开的一次性尿布具有抽褶式的耳部和采用了热弹性材料,允许部分的尿布伸展。Wood等的尿布的背片与顶片都包括有不伸展的材料。
本发明涉及设计用来吸收体内渗出物的吸湿制品。这种吸湿制品包括可使它更好与用户身体配合的可延伸区,而由于有了这种可延伸区,它就可以适合众多使用者的需要。
本发明在其一个方面涉及到一种吸湿制品,它具有前部、后部、连接此前部与后部的裤裆部以及第一外周边,此前部、后部与裤裆部在一起确定出吸湿制品的整个区域,同时有一纵轴线延伸通过此前部、后部与裤裆部,此纵轴线在与其基本上准直的这一吸湿制品中确定出第一方向,此外还有一与其相关的横的第二方向,这种吸湿制品包括有:外罩层,它由可沿上述第一方向与第二横向中至少一个方向延伸的第一材料形成;体侧衬里层,由可沿上述第一方向与第二横向中至少一个方向延伸的第二材料形成,体侧衬里层与外罩层一起形成了基础结构;至少一个弹性层件,它具有第二外周边并在外罩层与体侧衬里层之间确定一弹性层,附着到外罩层与体侧衬里层的至少一个之上,这里的外罩层、体侧衬里层与弹性层能够在实质上是完全延伸而无应力的条件下同时共存;以及至少一个可延伸区,它限定在前述弹性层件的第二外周边内且包含着体侧衬里层与外罩层两者的共同延伸部分,这一可延伸区使吸湿制品通过其中的延伸与收缩而得以具有广范围的可延伸性。
上述吸湿制品还可包括一位于其后部的连接件,此连接件能配合用于将吸湿制品固定到用户身上,它从吸湿制品后部的各个边缘朝外延伸,同时至少有一个可延伸区位于吸湿制品后部与此连接件相邻处并由此向内延伸,此吸湿制品包括一在上述体侧衬里层与弹性层之间的不可延伸的吸湿芯,而前述的基础结构则有效地在其一个区域上固定于此吸湿芯上,使得此基础结构在其由于附属到此吸湿芯上而受到制约的相关区域上不能延伸。在此基础结构接附到吸湿芯上时,此基础结构的其余部分可以延伸且包括前述可延伸区。
在本发明的另一个方面中,体侧衬里层的可延伸材料包括一种纺粘层,可沿前述第一方向与第二横方向中之一延伸约25%至约150%,同时能沿这两个方向中的另一方向相应的窄缩。外罩层的可延伸材料能够包括与体侧层相同的材料。外罩层的可延伸材料选自纺粘材料、纺粘叠层材料如纺粘-熔喷-纺粘材料以及粘合的粗梳织物材料这个组中的一或多种。体侧衬里层的材料也可从此同一组材料中选取。体侧衬里层与外罩层两者的可延伸材料通过在第一方向拉伸和对应地在第二横向缩窄而能在此横向上变窄,上述可延伸区则可沿横向延伸。体侧衬里层与外罩层都能起皱成令皱纹沿第一方向延伸,使得吸湿制品能沿第一方向与第二横向这两个方向上延伸。此吸湿制品也可以相对于此可延伸区只沿第一方向或只沿第二横向延伸。
在本发明的又一个方面,前述弹性层包括弹性材料纤维束或薄膜。此弹性层可以只与可延伸区作相同的布设,或可使此弹性层在大到由吸湿制品所限定的整个区域上于外罩层和体侧衬里层之间延伸。
在本发明的一个实施例中,于吸湿制品的后部内形成有第一和第二可延伸区,在此后部的相对侧与第一和第二可延伸区邻近处设置着第一与第二连接件,吸湿制品的后部包括在第二可延伸区中的第二弹性层件,而在这两个连接件相应的一个与吸湿芯之间则设置着第一与第二弹性层件。
在本发明的另一实施例中,吸湿制品包括在所述后部与裤裆部中的可延伸区,于是所述基础结构在后部和与后部相邻的裤裆部中具有可延伸性,延伸到裤裆部的最窄处,在前述外罩层与体侧衬里层之间设有吸湿芯,后者从所述前部内延伸出,经裤裆部到达后部内,此吸湿芯在与其共同延伸的此吸湿制品后部的一个显著区域上并不附着到所述基础结构上,而是与吸湿芯共同延伸,这样,此基础结构便可与吸湿芯无关地在前述后部中延伸。此外,可以在吸湿制品的所述前部中形成第二个可延伸区,后者从一中央区通过此前部的前边缘向内进到此前部中。
在本发明的另一实施例中,吸湿制品具有一在其前部与后部中可于其相对侧上的可延伸区中延伸的基础结构,此吸湿制品在其沿所述纵轴线延伸且所具宽度窄于其最小宽度的一个中央区中则是不可延伸的。
在本发明的另一实施例中,吸湿制品具有一能在沿所述纵轴线延伸且所具宽度窄于其最小宽度的中央可延伸区中延伸的基础结构,此吸湿制品包括设在它的前部、裤裆部与后部之中的,在外罩层与体侧衬里层之间的吸湿芯,此吸湿芯并不围绕上述中央可延伸区有效地固定到外罩层与体侧衬里层任一个之上。
在本发明的另一实施例中,吸湿制品具有的基础结构能在一沿前述纵轴线伸延的中央可延伸区中延伸,这一中央可延伸区的宽度比吸湿制品的最小宽度窄,此吸湿制品包括在其前部、裤裆部与后部之间的设置在外罩层与体侧衬里侧之间的吸湿芯,此吸湿芯并不有效地围绕此中央可延伸区附着于外罩层与体侧衬里层的任一侧上。
在本发明的另一实施例中,前述基础结构是在包括吸湿制品的裤裆部在内的可延伸区中延伸。这一裤裆部可以包括从纵轴线向外分开的腿部弹性织品,其中的腿部弹性织品可以在基本上完全延伸的无应变条件下与此基础结构同时共存,并可以在基础结构沿第一方向于上述可延伸区中延伸时延伸。
在本发明的另一个方面,于此基础结构上接附有至少一个基本上不可延伸的层件。此不可延伸的层件即使是在存在有弹性层时也形成一不可延伸的区域。
本发明的另一个部分所涉及的吸湿制品具有前部、后部、连接此前部与后部的裤裆部以及第一外周边,此前部、后部与裤裆部在一起确定出了吸湿制品的整个区域,有一纵轴线延伸过上述前部、后部与裤裆部并在此吸湿制品中界定出与此纵轴线一致的第一方向和相关的第二横方向,这种吸湿制品包括:由基本上不可延伸的第一材料形成的外罩层;由可沿此第一方向与第二横方向中至少之一延伸的第二材料形成的体侧衬里侧,此体侧衬里层与外罩层一起组成基础结构;具有第二外周边的至少一个弹性层件,限定出一个在外罩层与体侧衬里层之间的弹性层并固定在外罩层和体侧衬里层至少之一上;以及至少一个可延伸区,它限定在上述弹性层件的第二外周边内,且包括有吸湿制品的体侧衬里层与外罩层的共延伸部分,此外罩层当体侧衬里层与弹性层件两者基本上是完全伸延和基本上是无应变时便打褶裥,使得此弹性层与体侧衬里层随外罩层中褶裥的延伸而作相应的延伸;前述可延伸区可沿第一方向与第二横方向中至少之一延伸,这一可延伸区由于能使吸湿制品在至少这样一种可延伸区中延伸而使吸湿制品具备广范围的可延伸性。外罩层在吸湿制品的第一外周边向内的可延伸区中并不接附于所述弹性层件之上。此外罩层的不可延伸的材料可以包括这样的织造或非织造的纤网,它们具备着充分的不可延伸性,并在有力施加于其上时能基本上防止拉伸。
在本发明的另一个方面中,这种吸湿制品可以不具有脚部弹性织品和腰部弹性织品。这是因为吸湿制品中形成的可延伸区增强了可延伸性与回缩性。
本发明的又一个方面包括一种用来形成吸湿制品的方法,此吸湿制品具有长度与宽度、前部、后部、连接此前部与后部的裤裆部、以及通过此前部和后部和裤裆部的纵轴线,后者在此吸湿制品中界定出一与其本身一致的第一方向以及一相关的第二横方向,此吸湿制品还具有至少一个可延伸区,上述方法包括:通过将可延伸的体侧衬里层和具有至少是相当的长度与宽度的可延伸外罩层接附到一起,而形成一基本上延伸到吸湿制品全长与全宽的基础结构;同时在此可延伸的所在地将至少一层弹性层件设于外罩层与体侧衬里层之间,而于此基础结构中形成弹性的可延伸区,所有这类弹性区、体侧衬里层与外罩层适合在基本上完全伸延开和基本上无应变的条件下同时共存,由此给吸湿制品形成了这样一种可延伸区,通过使此吸湿制品在至少一个可延伸区中的延伸与回缩而能使这种制品具有广范围的可延伸性。
上述方法还包括在所述基础结构上附着一层吸湿芯,以在通过将此吸湿芯附着到基础结构上而控制的区域中,防止此吸湿制品的延伸。
上述方法还包括,通过在前面界定的不可延伸区中将一基本上不可延伸的层件固定到基础结构上,而形成了与前述弹性层共同扩张的不可延伸区;由此使吸湿制品在此不可延伸区中的延伸在实质上受到上述不可延伸层的限制。
上述可延伸的外罩层和/或可延伸的体侧层两者可以通过将张力施加到非弹性材料上的步骤而形成拉细的非弹性材料,在此,上述张力将此非弹性材料沿第一方向拉伸约25%至约150%,对应地使其在横向上窄缩。此可延伸的外罩层与体侧衬里层两者都能包括通过将张力加到它们之上,同时缩小这两种材料,即沿横向同时缩小变窄这两种材料而形成窄缩的非弹性材料;并在这两种材料窄缩了之后使它们沿第一方向起皱,由此可使吸湿制品沿第一方向与第二横方向在至少一个可伸缩区中收缩。
本发明又另一个方面所涉及的吸湿制品具有前部、后部、连接此前部与后部的裤裆部以及通过这三个部的纵轴线,后者界定出此吸湿制品的与该轴线一致的第一方向以及相关的第二横方向,此吸湿制品包括:由可沿第一方向与第二横方向中至少之一延伸的第一材料所形成的外罩层;由可沿第一方向与第二横方向中至少之一延伸的体侧衬里层,此外罩层与体侧衬里层结合形成基础结构;以及包括着至少是此体侧衬里层与外罩层共同延伸部分的至少一个可延伸区,这样的延伸区通过使吸湿制品在至少一个延伸区的延伸而能使吸湿制品于这种区中具有广范围的延伸性。当这种延伸区是由体侧衬里侧与外罩层形成时,吸湿制品便能在此可延伸区中回缩基础结构所延伸距离的约5%至70%。当此可延伸区还包括弹性层时,则吸湿制品能在此可延伸区中回缩基础结构所延伸距离的约70%至约100%。此至少一个可延伸区能够包括一批可延伸区,这批可延伸区中的至少是其第一个包括一弹性层,而至少是其第二个则没有弹性层。
图1是本发明的第一实施例的顶视图。
图2是沿图1中2-2线的此吸湿制品的横剖图。
图3是另外包括有弹性件的此吸湿制品第二实施例的顶视图。
图4是沿图3中4-4线的此吸湿制品的横剖图。
图5是本发明第三实施例的顶视图。
图6是本发明第四实施例的顶视图。
图7是本发明第五实施例的顶视图。
图8是沿图6中8-8线截取的横剖图,同时示明了可沿两个方向延伸的此吸湿制品的第六实施例。
图9是本发明第七实施例的顶视图。
本发明的应用并不限于下面所述和附图所示的结构与布置细节。本发明可以有其它实施例形式或可以由多种具有不同特征的方式来实现。此外还应认识到,本说明书中所用到的名词与术语是出于说明和解释目的而不应视之为限制。图中相同的标号表明相同的部件。
本发明涉及用来吸收人体渗出物的吸湿制品。虽然本发明的最佳实施例是利用例如婴儿尿布等吸湿制品进行描述,但本发明包括且同样适用于成人失禁紧身裤、运动裤,等等。
本发明能通过参考附图获得最好的理解。图1示明的吸湿制品8具有前部10、后部12与连接此前部10与后部12的裤裆部14。吸湿制品具有通过前部10、后部12与裤裆部14的纵轴线16。纵轴线16确定了与它一致的第一方向18和大体上与第一方向18垂直的第二横方向20。方向18与20在图中用箭头标明。
如沿图1中2-2线截取的剖面图2所示,吸湿制品8是由外罩层22与体侧衬里层24形成,这两组组成基础结构26。外罩层22与体侧衬里层24之间设有弹性层28形成可延伸区。弹性层28在外罩层22与体侧衬里层延伸时,从一静止位置随这两层延伸。弹性层28的延伸在其中形成了收缩力。这种收缩力促使弹性层28收缩恢复,且促致吸湿制品的可延伸区返回且基本上到它的预延伸尺寸。
上述可延伸区包括吸湿制品8中的若干片或若干块。在图1以及所有其它附图中,这类可延伸区总体上以30标明,用许多圆圈表示,说明区30至少沿一个方向是可延伸的。这些可延伸区30是与吸湿制品8成为整体,即使得区30是由吸湿制品8中业已存在的部件所形成。
连接件32可以包括机械紧固件,例如图1中所示吸湿制品8的后部12上外罩层22上所接附的钩与环紧固系统。有一相应的环料或环面34装附在前部10的外罩层22上,可用来与连接件32的钩料作可脱开的结合。也可以用其它周知的紧固件将吸湿制品8支承到人体上。例如还可以利用粘合系统、粘合剂紧固系统,等等来固定吸湿制品8。也可将吸湿芯36支承或安装在外层罩22与体侧衬里层24之间。
外罩层22包括的第一材料最好延伸到基本上是吸湿制品8整个区域上,且能够沿第一方向18延伸以增加其长度,并沿横方向20窄缩。这种材料包括针织和稀松织物、粘合的粗纺织物、纺粘织物与熔喷织物。熔喷织物通常包括熔喷微纤维。这种材料还可以具有多层结构,例如多个纺粘层和/或多个熔喷层。这种材料可以由聚合物制成,例如聚烯烃类。典型的聚烯烃包括聚丙烯、聚乙烯、乙烯共聚物与丙烯共聚物。可参看授予Morman等的美国专利5226992,其中的全部内容已综合于此作为参考,用来说明可以形成外罩层22的种种材料。外罩层22的理想材料可以包括将可延伸的膜层叠层到窄缩的非织造的喷粘材料上。这样的非织造材料例如应在第一方向18上相对于其原有长度有5~75%的延伸率而最好是10~50%的延伸率,相应地沿横方向20由于此材料的窄缩而应有相对其原始宽度的5~75%的收缩率。
体侧衬里层24包括的第二种材料最好能实质上延伸及吸湿制品8的整个区域上,并且可是以上美国专利5226992号中相关于外罩层22所公开的相同材料。理想的一种材料是在横方向20中由于其原始长度在第一方向18中延伸35~75%导致有收缩力作用于其上的使已拉伸的纺粘层窄缩的材料(具体参考美国专利5 226 992号中的图2、2A与2B)。
弹性层28可以包括嵌段共聚物形成的热塑材料膜,这种共聚物具有包含部分苯乙烯的聚合物端基封闭以及例如共轭二烯或低级烯烃聚合物的弹性聚合物中间嵌段。上述弹性层可以由例如从壳牌化合物公司以商品名KRATON G购到的,苯乙烯/乙烯/丁二醇/苯乙烯嵌段聚合物。弹性层28还可以包括基本上不透液的膜、弹性材料纤维、弹性泡沫塑料或弹性的粘合剂涂层。
可伸缩区30包括吸湿制品中这样一些区域,其中的外罩层22接附到体侧衬里层24上并以弹性层28夹于其间而形成复合多层结构,此多层结构中的各层都是可以延伸的,使得吸湿制品8至少是在一个方向中可在可延伸区30中伸展。或者,可将外罩层22、体侧衬里层24与弹性层28按任何布局设定来形成可延伸区30。例如,可将外罩层22设在弹性层28与体侧衬里层24之间来提供可延伸区30。此外,体侧衬里层24、外罩层22与弹性层28可以同时共存于基本上完全伸延开的无应变的条件下。之所以考虑上述关系是由于在延伸区30形成时,于各个有关层上不会发生显著的应变。
吸湿芯36可以适当地包括疏水性纤维的基质如纤维素绒毛的织物,再结合以周知为超吸湿物品的高吸湿性材料。在一种特殊的实施形式中,吸湿芯36包括超吸湿的水凝胶形成粒料和木浆绒毛。取代木浆绒毛,也可以用合成的,聚合物,熔喷纤维或是将熔喷纤维与天然纤维相结合。这种超吸湿材料可以与疏水性纤维充分均匀地混合,或者可以把它结合到吸湿芯36中。
另一方面,吸湿芯36可以包括纤维织物与超吸湿材料的叠层件,或可以是将超吸湿材料保持于局部区域中的其它适当装置。
吸湿芯36可以有多种形状供选择。例如吸湿芯36可以取矩形、工字形或T字形。一般较好的形状是,使吸湿芯36在裤裆部14比在后部12或前部10中要窄。
吸湿芯36中的高吸湿材料可以选自天然的、合成的和改性的天然聚合物和种种物质。这种高吸湿性材料可以是无机材料如硅胶,或是具有机化合物如交联聚合物。这里的交联一词是指任何的方法,可以有效地将通常的水溶物质变换为基本上不溶于水的但可以膨胀的物质,借此可以利用吸湿性质,但此已膨胀的材料在吸收了水基液体后基本上是不动的。上述方法例如可以包括物理缠结、结晶域、共价键合、离子络合与缔合,亲水性缔合如氢键合,以及疏水性缔合或范德瓦尔斯力。
图2中所示的吸湿芯36安装在体侧衬里层24与弹性层28之间。尽管这样的布置较为理想,但当弹性层28能充分透过液体使其由此通过吸湿芯36时,也可将吸湿芯36安装于弹性层28和外罩层22之间。自然,在吸湿制品8的某些区域中,弹性层28也可以不存在于外罩层22与体侧衬里层24之间。
在图1的第一实施例中,吸湿芯36固定于基础结构26上形成一不可延伸区37,后者由吸湿芯36能有效地附着于基础结构26上的区域界定。此不可延伸区37由阴影线表明。其它的不可延伸区,在其它的顶视图中类似地由吸湿芯36的阴影线以及由此结构的其它部分中不存在圆圈处或阴影线处表明。
在附图中吸湿芯36未固定到基础结构26上而弹性层28固定在体侧衬里层24与外罩层22之间的任何区域中,是以圆圈作标记来表明一可延伸区30。图1中示明了前与后的腰部弹性织品38与腿部弹性织品40。这些弹性织品也能使吸湿制品8适合于众多的用户所需。腿部弹性织品40可以由附着到外罩层22和/或体侧衬里层24上的不同材料形成。适用来形成腿部弹性织品40或腰部弹性织品38的材料包括纤维、带或是一或多层聚合的和/或弹性的材料,它们可以在伸展的位置结合到吸湿制品8上。所示的腰部弹性织品38和/或腿部弹性织品40在所有的附图中都具有任选性质。要是可延伸区30覆盖有吸湿制品8的足够区域并在第一方向18中能充分延伸,则如图9所示,也可不需要腿部弹性织品。要是可延伸区30覆盖有吸湿制品8的足够的区域并且在横向20中能充分地延伸时,则也可以如图3与5所示不需后部腰部弹性织品38。
图3示明了由图1中的实施例推导出的第二实施例。在此实施例中有附加的弹性织品42设在连接件32与吸湿芯36之间,且最好不附着到吸湿芯36上。这些附加的弹性织部增强了后部12沿横方向20延伸与收缩的能力。在这样的布置下,腰部弹性织品38在吸湿制品8的后部12中就不太重要。此外,图3所示的区域46,没有吸湿制品8的前部10中的圆圈与阴影线,处在毛圈材料或表面件的部位内,一般是不可延伸的。
已完全延伸的或不可延伸的层44能够控制上述不可延伸区46的不可延伸性,如沿图3中4-4线截取的横剖图所示。此不可延伸层44最好在它的各整个相对表面上附着到外罩层22与弹性层28上,如图4所示。此不可延伸层44也可包括许多不可延伸层部件,后者接附到吸湿制品8的各个部分上。对于不可延伸层44相对于其它各层间的布置并无关键意义。不可延伸层44可设在体侧衬里层24与弹性层28之间,或可只附着于外罩层22或是体侧衬里层24之上。
此不可延伸层44可以包括聚乙烯膜或是将聚乙烯膜叠层到非织造织物的表面上,如聚烯烃纤维的纺粘织物。此外,不可延伸层44可以由织造或非织造的纤维织物,或是任何其它附着到基础结构26上其不可延伸程度是以防止此结构有显著延伸的材料。一般,这种吸湿制品8在不可延伸区46的可延伸性沿任何方向限制为未拉伸时尺寸的20%或以下。
弹性层28不一定要出现于不可延伸区46中。但即使是没有弹性层28,由于后面将会说明的,基础结构26本身也确实具有某种程度的可延伸性,因而最好是采用不可延伸层44或一批不可延伸层部件。
图5示明了本发明的第三最佳实施例,其中基本上是吸湿制品8的整个后部12以及作为选择还可以有裤裆部14的一部分包括着第一可延伸区30A。吸湿芯36在后部12的显著部分上并不固定到基础结构26上。吸湿芯36由一翼片(未示明)所保持或是不固定地设置在后部12中体侧衬里层24与弹性层28之间。如图中阴影线所表示,吸湿芯36在裤裆部14、前部10以及在少部分后部12中固定地附着到基础结构26上。
图5中吸湿制品8的前部10包括一不可延伸区46,其中的不可延伸性基本上如相对于图3中吸湿制品的前部10所述,受到不可延伸材料44的控制。图5中的实施例也可不需要后部腰部弹性织品38,图中也未将其示出,这是由于吸湿制品8于后部12的横向20中在所延伸区30中有可延伸性所致。
第二个可延伸区30B位于吸湿制品8的前部10中。可延伸区30B大致呈矩形,从中央区穿过前部10的前边缘48进入前部10之内并叠置到部分吸湿芯36上。吸湿芯36在上述区域中于前部10的可延伸区30的任一侧都固定地附着于基础结构26上,但在第二可延伸区30B这种区域上则不如此。不可延伸区46最好在吸湿制品8的前部10中包括有在可延伸区30B任一侧上的独立的不可延伸层部件。由于可延伸区30B能沿横方向延伸,如图所示,图5中的实施例可以不需要前部或后部的腰部弹性织品38、40。可延伸区30A、30B是由这样一些弹性层部件所形成,它们对于各个可延伸区具有由弹性层件28A、28B所界定的外周边。
图6中的实施例包括在前部10与后部12各个之中的在吸湿制品8相对侧上的可延伸区30A、30B、30C。此吸湿制品8在从后部12的前边缘48至后边缘56沿吸湿制品8的长度延伸的中央不可延伸区46上是不延伸的,这一不可延伸区46沿前述纵轴线16延伸,所具有的宽度“W1”比吸湿制品8在裤裆部14的最小宽度还窄。此实施例最好包括对于各个可延伸区30A、30B、30C、30D的为弹性层28所确定的弹性层部件。此实施例还最好包括一或多个不可延伸的层44或是对应的不可延伸的层件,它们限制了在吸湿制品的不可延伸区46中的可延伸性。吸湿芯36以其外表面为基础结构26支承,但在吸湿制品8的前部10中不附着于基础结构26上。
在图7的实施例中,可延伸区30与不可延伸区46基本上是同图6实施例中的各个可延伸区30与不可延伸区46相反。吸湿制品8的中央区形成一中央可延伸区30,沿吸湿制品8的长向从前边缘48延伸到后边缘50,这一可延伸区30沿纵轴线16延伸,所具有的宽度“W2”比吸湿制品8在裤裆部件14处的最小宽度窄,但是覆盖住它的大部分。吸湿芯36不固定地安放到可延伸区30的外罩层22或体侧衬里层26上。这样吸湿芯36在吸湿制品8的裤裆部与后部12中不附着到外罩层22与体侧衬里侧26上。这样,吸湿芯36在前部10的外侧部件处便固定到外罩层22与体侧衬里层26的至少一个之上。吸湿芯36由翼片(未示明)保持,或者如以前所述,以不附着的或是以支承而不固定的方式设在后部12与裤裆部14的体侧衬里层24与弹性层28之间。
正如先前所述,可延伸区30通常包括吸湿制品8这样的区域,其中至少是外罩层22与体侧衬里层24中的至少一个是附着于弹性层28之上,使得吸湿制品8至少沿一个方向于可延伸区30中可弹性伸展。体侧衬里层24、外罩层22与弹性层28可以在基本上是完全伸展开的无应力条件下同时共存。之所以能期望获得上述关系,是因为当上述各层相互固定时,在这些层22、24与28上不存在显著的应力。
本发明的关键构思是,至少有基础结构中的一层能在至少一个方向上通过施加延伸力而超越其完全延伸的无应力条件延伸。在某些实施例中,这一层可以在第二个垂直方向或横方向中延伸。可以采用多种方法于第二横方向中提供可延伸性。
图8是沿图6中8-8线截取的横剖图。图8本质上并不表示图6中的实施例。图8表明的是本发明的这样一个实施例,其中的可延伸区30可沿第一方向18与第二横方向20延伸。在图8中的这两个方向的延伸特别是沿第一纵向18的延伸,可以通过在体侧衬里层24与外罩层28中任一或两个之上进行起皱或其它的预缩小处理,使得已起皱的各层能沿第一方向18延伸来实现。在这样的情形下,吸湿制品8可以在可延伸区30中沿第一方向18(由于起皱结果)和第二方向20(由于缩小的结果)拉伸。最好采用小的起皱而使基础结构26的材料可沿第一方向18充分延伸。
图8中的多向伸延布局可适用于这里所公开的各个例子中。在图9所示的实施例中是使这样的布局能够由于可伸延区30于裤裆部14中的弹性而得以除去腿部弹性织品40。
图9的实施例所示的吸湿制品8在裤裆部14中具有纵向延伸性。此裤裆部14包括可在第一方向18中延伸的可延伸区30。吸湿芯36最好只在吸湿制品8的前部10中固定于基础结构26上。吸湿芯36在后部12与裤裆部14之中是以不固定的方式设在外罩层22与体侧衬里层24之间。在这一实施例中,由于可延伸区30在裤裆部14中可沿纵向延伸,就不需要腿部弹性织品40。这种增强了的纵向可延伸性能使吸湿制品8适用于更多的用户。
图9中的实施例自然可以采用非细长式的腿部弹性织品。这种非细长的腿部弹性件在需要有另外的回复力时能在吸湿制品8的裤裆部中提供另外的回缩张力。未受应力的腿部弹性件在使用中朝外与纵轴线16相分开,当所延伸区30沿第一方向伸展而增大吸湿制品8的全长时,此未受应力作用的弹性织品即拉伸。
在另一实施例中,外罩层22包括一种基本上不可延伸的材料,后者则可包括织造的或非织造的纤维织物等,或是任何其它足以在有力作用于其上不延伸的材料。但是在组装好的吸湿制品8中,外罩层22当弹性层28与体侧衬里层24两者都充分地完全延伸开而基本上无应力时便会打褶。在这样的布置下,体侧衬里层24与弹性层28将随着外罩层22中褶裥的相应延伸而延伸,但是不会超越外罩层22的完全延伸开的尺寸,而所述外罩层22能有效地接附于弹性层28和体侧衬里层24两者之一或全部之上的区域。
这一实施例的图形表示与图1、3、5~7与9所示的相同。唯一的区别是外罩层22是不可延伸的,加大的,并打裥以使体侧衬里层24与弹性层28能在没有应力作用于形成外罩层22的纤维或其它材料上且外罩层22未完全延伸时,完全延伸和完全回缩。造成打裥的力或材料(例如起皱的纤维或材料自然是有应力的,这种应力即使是适当的,也会在外罩层22伸延开使皱裥松释,而让外罩层22能够实现其完全伸延开的但基本上是不拉伸的状态。
在本发明的某些实施例中,至少是吸湿制品8的一个打延伸区30不包括弹性层28。这样一类区域30可沿至少一个方向延伸。不具有弹性层28的区域30与包括弹性层28的区域30相比,回缩率较低。具有弹性层28的可延伸区30能在拉伸后回缩所拉伸量的约70%至约100%。没有弹性层28的可延伸区30的回缩率则相当于已拉伸量(即区域30延伸的距离)约5%至约70%,但更可能是在5%至约50%之间。延伸量规定为在可延伸区30中因拉伸所增加的长度或扩张的量。因此,相对于前面公开的实施例,它们中的可延伸区或延伸部能够包括没有弹性层28的可延伸区30。无弹性层28的可延伸区30也是可以延伸的,不过与具有弹性层28的区域相比,回缩率要较低些。这就是说,弹性层28一般能在可延伸区30中提供大部分的回缩力。可延伸区30能够由在拉力下可较原始尺寸胀伸约10%至约200%的材料形成。这样,取决于所用材料的类型与材料的布置,可延伸区30的可延伸率可有很大的不同。
尽管未作具体说明,但因1~9所示各组部件的任意组合以及与此有关的种种变型都是在预料之中的。例如所示的各个实施例可以包括或不包括腰部弹性织品38和/或腿部弹性织品40。此外,所示的任一实施例可以包括带弹性层28的可延伸区30和/或不带弹性层28的可延伸区30。
所公开的本发明改进了吸湿制品8对用户的适配性。例如,取决于婴儿所取位置如坐下相对于站立,腰周尺寸与大腿周尺寸可有1~2英寸的变化,而直裆的尺寸可有1英寸的变化。本发明改进了本吸湿制品对其用户的适配性和扩大了用户的尺寸范围。
本领域技术人员在不背离本发明精神的前提下,可以相对于图示的各实施例对这里所公开的发明作出某些改进。同时,尽管已相对若干最佳实施例描述了本发明,但应认识到本发明是可以有众多的调整、改型与变动的,而所有这些调整、改型与变动都应认为是包括在后附权利要求书的范围内。

Claims (73)

1.吸湿制品,它具有前部、后部、连接此前部与后部的裤裆部以及第一外周边,此前部、后部与裤裆部在一起确定出吸湿制品的整个区域,同时有一纵轴线延伸通过此前部、后部与裤裆部,此纵轴线在与其基本上准直的这一吸湿制品中确定出第一方向,此外还有一与其相关的横的第二方向,这种吸湿制品包括有:(a)外罩层,它由于沿上述第一方向与第二横向中至少一个方向延伸的第一材料形成;(b)体侧衬里层,由可沿上述第一方向与第二横向中至少一个方向延伸的第二材料形成,体侧衬里层与外罩层一起形成了基础结构;(c)至少一个弹性层件,它具有第二外周边并在外罩层与体侧衬里层之间确定一弹性层,附着到外罩层与体侧衬里层的至少一个之上,这里的外罩层、体侧衬里层与弹性层能够在基本上是完全延伸而无应力的条件下同时共存;以及(d)至少一个可延伸区,它限定在前述弹性层件的第二外周边内且包含着体侧衬里层与外罩层两者的共同延伸部分;上述此至少一个可延伸区使吸湿制品通过在至少的一个可延伸区中的延伸与收缩而得以具有广范围的可延伸性。
2.如权利要求1所述的吸湿制品,其特征在于,还包括一位于其后部的连接件,此连接件能配合用于将吸湿制品固定到用户身上,它从吸湿制品后部的各个边缘朝外延伸,同时至少有一个可延伸区位于吸湿制品后部与此连接件相邻处并由此向内延伸。
3.如权利要求1所述的吸湿制品,其特征在于,包括一在上述体侧衬里层与弹性层之间的不可延伸的吸湿芯,而前述的基础结构则有效地在其一个区域上固定于此吸湿芯上,使得此基础结构在其由于附属到此吸湿芯和此基础结构之间而受到制约的相关区域上不能延伸。
4.如权利要求1的吸湿制品,所述体侧衬里层的第二可延伸材料包括有纺粘层,后者可在第一方向和第二横方向中之一拉伸约5%至约75%,而在这两个方向中的另一作相应的窄缩。
5.如权利要求1的吸湿制品,其特征在于,所述外罩层的第一可延伸材料包括有纺粘层,后者可在第一方向和第二横方向中之一拉伸约5%至约75%,而在这两个方向中的另一作相应的窄缩。
6.如权利要求1的吸湿制品,其特征在于,所述外罩层的第一可延伸材料选自纺粘材料、纺粘叠层材料与粘合的粗梳织物构成的组中的一或多个。
7.如权利要求1的吸湿制品,其特征在于,所述体侧衬里层与外罩层两者中的前述第一与第二延伸材料,通过沿第一方向拉伸和相应地沿第二方向窄缩而沿第二横向变窄,使前述的至少一个可延伸区可沿第二方向延伸。
8.如权利要求7的吸湿制品,其特征在于,所述体侧衬里层与外罩层起皱并使这种起皱可沿第一方向延伸,而使得所述吸湿制品沿第一方向和第二横方向可在所述的至少一个可延伸区中延伸。
9.如权利要求1所述的吸湿制品,其特征在于,所述吸湿制品可以在所述至少一个可延伸区中沿第二横方向延伸。
10.如权利要求1所述的吸湿制品,其特征在于,所述弹性层只同相关的所述至少一个可延伸区设置到一起。
11.如权利要求1所述的吸湿制品,其中所述弹性层包括弹性材料纤维。
12.如权利要求1所述的吸湿制品,其中所述基础结构是在它的这样一个区域上接附到吸湿芯上,在此区域上所述基础结构由于受到上述吸湿芯与它本身之间相结合的控制而在相关区域上不可延伸,而所述基础结构的其余部分则可延伸并包括所述至少一个可延伸区。
13.如权利要求1所述的吸湿制品,其中所述吸湿制品包括安装在它的所述后部上的连接件,而通过将此连接件安装到所述后部之上可使所述吸湿制品安置到用户身上,所述基础结构在吸湿制品的所述前部将所述连接件可靠地邻接到此吸湿制品的所述前部的区域中时,即附着到此区域中的吸湿芯上同时附着到不可延伸层件上。
14.如权利要求13所述的吸湿制品,其特征在于,所述的至少一个可延伸区包括第一与第二可延伸区,所述连接件包括第一与第二连接件,此各个第一与第二连接件设置于所述后部的相对侧上并与所述第一与第二可延伸区相邻,所述吸湿制品的前述后部则包括在所述第二可延伸区中的第二弹性层部件,而所述的第一与第二弹性层部件则设置在上述各连接件与吸湿芯之间。
15.如权利要求1所述的吸湿制品,其特征在于,所述吸湿制品包括在所述后部与裤裆部中的可延伸区,于是所述基础结构在后部和与后部相邻的裤裆部中具有可延伸性,延伸到裤裆部的最窄处,在前述外罩层与体侧衬里层之间设有吸湿芯,后者从所述前部内延伸出,经裤裆部到达后部内,此吸湿芯在与其共同延伸的此吸湿制品后部的一个显著区域上并不附着到所述基础结构上,而是与前述吸湿芯共同延伸,这样,此基础结构便可与吸湿芯无关地在前述后部中延伸。
16.如权利要求15所述的吸湿制品,其特征在于,此吸湿制品在其前部包括相应的前述延伸区,而所述第二延伸区是从中央区通过所述前部的前边缘进到此前部之内。
17.如权利要求1所述的吸湿制品,其特征在于,所述基础结构在所述前部中的此吸湿制品的相对侧上于各相应的所述可延伸区中延伸,而所述吸湿制品在其沿前述纵轴线延伸且宽度较其最小宽度为小的中央区上则不可延伸的。
18.如权利要求1所述的吸湿制品,其特征在于,所述基础结构可在沿所述纵轴线延伸的且宽度较所述吸湿制品最小宽度为窄的相关的前述中央可延伸区中延伸,所述吸湿制品包括设在所述外罩层与所述体侧衬里层之间的吸湿芯,此吸湿芯则并非有效地相对于此中央可延伸区固定到此外罩层或体侧衬里侧之上。
19.如权利要求1所述的吸湿制品,其特征在于,所述基础结构可在包括此吸湿制品裤裆部的所述相关的可延伸区中延伸。
20.如权利要求19所述的吸湿制品,其特征在于,所述裤裆部包括与所述纵轴线朝线分开的腿部弹性织品,此腿部弹性织品能在基本上完全延伸的无应力条件下与所述基础结构同时共存,而所述腿部弹性织品则当基础结构于所述可延伸区中沿第一方向延伸时延伸。
21.如权利要求1所述的吸湿制品。其特征在于,所述弹性层在前述外罩层与体侧衬里层之间在吸湿制品所限定的整个区域上延伸。
22.如权利要求21所述的吸湿制品,其特征在于,至少有一个基本上不可延伸的层部件在相应的至少一个可延伸区之外的至少一个区域中接附到前述基础结构之上。
23.吸湿制品,它具有前部、后部、连接此前部与后部的裤裆部以及第一外周边,此前部、后部与裤裆部在一起确定出吸湿制品的整个区域,同时有一纵轴线延伸通过此前部、后部与裤裆部,此纵轴线在与其基本上对中的这一吸湿制品中确定出第一方向,此外还有一与其相关的横的第二方向,这种吸湿制品包括有:(a)外罩层,它由基本上不可延伸的第一材料形成;(b)体侧衬里层,由可沿上述第一方向与第二横向中至少一个方向延伸的第二材料形成,此体侧衬里层与外罩层一起形成了基础结构;(c)至少一个弹性层件,它具有第二外周边并在外罩层与体侧衬里层之间确定一弹性层,附着到外罩层与体侧衬里层的至少一个之上;以及(d)至少一个可延伸区,它限定在前述至少一个弹性层件的第二外周边内且包含着体侧衬里层与外罩层两者的共同延伸部分,这一外罩层当所述体侧衬里层与弹性层件都已基本上完全伸延开且基本上无应力时便打裥,使得弹性层与体侧衬里层随所述外罩层中皱裥的相应延伸而延伸;上述的至少一个可延伸区可沿前述第一方向与第二横方向中的至少一个方向延伸,而所述的至少一个可延伸区通过吸湿制品在此至少一个可延伸区中的延伸与回缩,使得此吸湿制品是在广范围的可延伸性。
24.如权利要求23所述的吸湿制品,其特征在于,所述外罩层在所述至少一个可延伸区中不接附到前述弹性层件之上。
25.如权利要求23所述的吸湿制品,其特征在于,此吸湿制品包括设在体侧衬里层与弹性层之间的不可延伸的吸湿芯,而前述基础结构是在它的这样一个区域上接附到此吸湿芯上,在此区域上,基础结构由于受到吸湿芯与它本身这间相结合的控制而在相关区域上不可延伸。
26.如权利要求23所述的吸湿制品,其特征在于,所述体侧衬里层的可延伸材料包括纺粘层,后者可沿第一方向与第二横方向中之一延伸约25%至约150%,而在此两方向的另一方向中作相应的窄缩。
27.如权利要求23所述的吸湿制品,其特征在于,所述外罩层的不可延伸的材料包括纤维质织物,它是充分不可延伸的,能在有力作用于其上时可从实质上阻止延伸。
28.如权利要求23所述的吸湿制品,其特征在于,所述体侧衬里层的可延伸材料选自纺粘材料、纺粘叠层材料与粘合的粗梳织物构成的组中的一或多个。
29.如权利要求23所述的吸湿制品,其特征在于,所述体侧衬里层的可延伸材料通过沿第一方向拉伸和相应地沿第二方向窄缩使前述的至少一个可延伸区可沿第二方向延伸。
30.如权利要求23所述的吸湿制品,其特征在于,所述吸湿制品在所述至少一个可延伸区中沿所述第二方向延伸。
31.如权利要求23所述的吸湿制品,其特征在于,所述弹性层只同相关的所述至少一个可延伸区设置到一起。
32.如权利要求23所述的吸湿制品,其特征在于,所述弹性层包括弹性材料纤维。
33.如权利要求23所述的吸湿制品,其特征在于,所述基础结构是在它的这样一个区域上接附到吸湿芯上,在此区域上所述基础结构由于受到上述吸湿芯与它本身之间相结合的控制而在相关区域上不可延伸,而所述基础结构的其余部分则可延伸并包括所述至少一个延伸区。
34.如权利要求23所述的吸湿制品,其特征在于,所述吸湿制品包括安装在它的所述后部上的连接件,而通过将此连接件安装到所述后部上即可使吸湿制品安置到用户身上,所述基础结构在吸湿制品的所述前部将此连接件可靠地邻接到吸湿制品的所述前部的区域中时,即附着到此区域中的吸湿芯上同时附着到不可延伸层件上。
35.如权利要求34所述的吸湿制品,其特征在于,所述的至少一个可延伸区包括第一与第二可延伸区,所述连接件包括第一与第二连接件,此各第一与第二连接件设置于所述后部的相对侧上并与所述第一与第二可延伸区相邻,所述吸湿制品的前述后部则包括在所述第二可延伸区中的第二弹性层部件,而所述的第一与第二弹性层部件则设置在上述各连接件与吸湿芯之间。
36.如权利要求23所述的吸湿制品,其特征在于,所述吸湿制品包括在所述后部与裤裆部中的可延伸区,于是所述基础结构在后部和与后部相邻的裤裆部中具有可延伸性,延伸到裤裆部的最窄处,在前述外罩层与体侧衬里层之间设有吸湿芯,后者从所述前部内延伸出,经裤裆部到达后部内,此吸湿芯在与其共同延伸的此吸湿制品后部的一个显著区域上并不附着到所述基础结构上,而是随所述吸湿芯共同延伸,这样,此基础结构便可与吸湿芯无关地在前述后部中延伸。
37.如权利要求36所述的吸湿制品,其特征在于,此吸湿制品在其前部包括相应的前述第二延伸区,而所述第二延伸区是从中央区通过所述前部的前边缘进行此前部之内。
38.如权利要求23所述的吸湿制品,其特征在于,所述基础结构可在所述前部中此吸湿制品的相对侧上于各相应的所述可延伸区中延伸,而所述吸湿制品在其沿前述纵轴线延伸且宽度较其最小宽度为小的中央区上则是不可延伸的。
39.如权利要求23所述的吸湿制品,其特征在于,所述基础结构可在沿所述纵轴线延伸的且宽度较所述吸湿制品最小宽度为窄的相关的前述中央可延伸区中延伸,所述吸湿制品包括设在它的所述前部与裤裆部以及后部中的所述外罩层与所述体侧衬里层之间的吸湿芯,此吸湿芯则并非有效地相对于此中央可延伸区固定到此外罩层或体侧衬里层之上。
40.如权利要求23所述的吸湿制品,其特征在于,所述基础结构可在包括此吸湿制品裤裆部的所述相关的可延伸区中延伸。
41.如权利要求40的吸湿制品,其特征在于,所述裤裆部包括与所述纵轴线朝外分开的腿部弹性织品,此腿部弹性织品能在基本上完全延伸的无应力条件下与所述基础结构同时共存,而所述腿部弹性织品则当基础结构于所述可延伸区中沿第一方向延伸时延伸。
42.如权利要求23所述的吸湿制品,其特征在于,所述吸湿制品没有腿部弹性织品。
43.如权利要求23所述的吸湿制品,其特征在于,所述吸湿制品没有腰部弹性织品。
44.用来形成吸湿制品的方法,此吸湿制品具有长度与宽度、前部、后部、连接此前部与后部的裤裆部、以及通过此前部和后部和裤裆部的纵轴线,后者在此吸湿制品中界定出一与其本身一致的第一方向以及一相关的第二横方向,此吸湿制品还具有至少一个可延伸区,上述方法包括:(a)通过将可延伸的体侧衬里层和具有至少是相当的长度与宽度的可延伸外罩层接附到一起,而形成一基本上延伸到吸湿制品全长与全宽的基础结构;以及(b)在此可延伸区的所在地将至少一层弹性层件设于外罩层与体侧衬里层之间,而于此基础结构中形成弹性的可延伸区,所有这类弹性层、体侧衬里层与外罩层适合在基本上完全伸延开和基本上无应变的条件下同时共存;由此给吸湿制品形成了这样一种可延伸区,通过使此吸湿制品在至少一个可延伸区中的延伸与回缩而能使这种制品具有广范围的可延伸性。
45.如权利要求44所述的方法,其特征在于,此方法还包括将吸湿芯接附到所述基础结构上,用以防止吸湿制品在受到吸湿芯附着到基础结构上所控制的区域中延伸。
46.如权利要求44所述的方法,其特征在于,此方法还包括形成所述吸湿制品的与所述弹性层共同延伸的不可延伸区,即将一基本上不可延伸的层件设置到这样确定的不可延伸区中的前述基础结构上,使得吸湿制品在此区中的延伸受到所述不可延伸层的充分约束。
47.如权利要求44所述的方法,其特征在于,所述可延伸的外罩层包括通过给非弹性材料施加张力而形成的窄缩的非弹性材料,这一张力使此非弹性材料沿第一方向拉伸约25%至约150%,同时使此非弹性材料沿第二方向相应地窄缩。
48.如权利要求44所述的方法,其特征在于,所述可延伸的体侧衬里层包括通过给非弹性材料施加张力而形成的窄缩的非弹性材料,这一张力使此非弹性材料沿第一方向拉伸约25%至150%,同时使此非弹性材料沿第二方向相应的窄缩。
49.如权利要求44所述的方法,所述的可延伸外罩层包括选自纺粘材料、纺粘叠层材料与粘合粗梳织物构成的组中的一或多种可延伸材料。
50.如权利要求44所述的方法,其特征在于,所述可延伸的体侧衬里层包括选自纺粘材料、纺粘叠层材料与粘合粗梳织物构成的组中的一或多种可延伸材料。
51.如权利要求44所述的方法,其特征在于,所述可延伸的外罩层与体侧衬里层两者包括由下述步骤形成的窄缩非弹性材料:
(c)对此外罩层与体侧衬里层两者的非弹性材料施加张力来同时窄缩边两种材料,且这时是沿第二横方向来进行这种窄缩的;以及
(d)在上述两种材料窄缩后,使它们沿第一方向起皱;
由此可使所述吸湿制品于前述的至少一个可延伸区中沿第一方向和第二横方向两者延伸。
52.如权利要求44所述的方法,其特征在于,包括只与各可延伸区有关地设置所述弹性层。
53.如权利要求44所述的方法,其特征在于,包括有在所述吸湿制品界定的整个区域上将所述弹性层设定于外罩层和体侧衬里层之间。
54.如权利要求53所述的方法,其特征在于,所述方法还包括形成所述吸湿制品的随弹性层共同延伸的不可延伸区,即将一基本上不可延伸的层件设定到这样确定的不可延伸区中的前述基础结构上,使得吸湿制品在此区中的延伸受到所述不可延伸层的充分约束。
55.如权利要求44所述的方法,其特征在于,所述基础结构在所述的至少一个可延伸区中沿第二横向可延伸的。
56.吸湿制品,它具有前部、后部、连接此前部与后部的裤裆部以及延伸通过此前部、后部与裤裆部的纵轴线,此纵轴线在吸湿制品中界定出与其准直的第一方向和与之相关的第二横方向,此吸湿制品包括:
(a)由可沿此第一方向与第二横方向中至少一个延伸的第一
   材料形成的外罩层;
(b)由可沿此第一方向与第二横方向中至少一个延伸的第二
   材料形成的体侧衬里层,此体侧衬里层与外罩层在一起形成
   基础结构;以及
(c)至少一个可延伸区,它具有至少是所述体侧衬里层与外罩
   层的共同延伸部分,
上述此至少一个可延伸区使得吸湿制品通过在其中从基本上完全延伸的无应力状态下进行延伸,而得以在此至少一个可延伸区中具有广范围的可延伸性。
57.如权利要求56所述的吸湿制品,其特征在于所述至少一个可延伸区是由所述体侧衬里层与外罩层形成,此吸湿制品可在所述至少一个可延伸区中可回缩所述基础结构所延伸的距离的约5%至约70%。
58.如权利要求56所述的吸湿制品,其特征在于,所述至少一个可延伸区还包括有弹性层,此吸湿制品在所述至少一个可延伸区中可回缩所述基础结构所延伸的距离的约70%至约100%。
59.如权利要求56所述的吸湿制品,其特征在于,所述的至少一个可延伸区包括着一批可延伸区,这批延伸区中至少是第一个包括有弹性层而至少是其第二个不具有弹性层。
60.如权利要求56所述的吸湿制品,其特征在于,所述外罩层的第一可延伸材料选自纺粘材料、纺粘叠层材料与粘合粗梳织物构成的组中的一或多种。
61.如权利要求56所述的吸湿制品,其特征在于,所述体侧衬里层与外罩层两者的第一与第二可延伸材料,已通过沿第一方向拉伸和沿第二横方向相应地窄缩已在第二横方向中窄缩,前述的至少一个可延伸区可沿第二横方向延伸。
62.如权利要求61所述的吸湿制品,其特征在于,所述体侧衬里层与外罩层两者已作起皱处理,使得皱裥可沿第一方向延伸,且其中所述吸湿制品可于所述至少一个可延伸区沿第一方向与第二横方向两者延伸。
63.如权利要求56所述的吸湿制品,其特征在于,所述吸湿制品在所述至少一个可延伸区中可沿第二横方向延伸。
64.如权利要求56所述的吸湿制品,其特征在于,所述基础结构有效地接附于吸湿芯上,使得所述基础结构在它的由于吸湿芯与此基础结构间有接附关系而受到控制的区域中不能延伸,此所述基础结构的其余部分则可以延伸并包括所述的至少一个可延伸区。
65.如权利要求56所述的吸湿制品,其特征在于,此吸湿制品包括有安装在它的所述后部上的连接件,通过将此连接件安装到所述前部上可将吸湿制品设定到用户身上,而前述基础结构则在此吸湿制品的前部的一个区域中接附到不可延伸的层件上,这一区域邻接着上述连接件装附到此吸湿制品前部中的部位。
66.如权利要求56所述的吸湿制品,其特征在于,所述吸湿制品包括在所述后部与裤裆部中相应的前述可延伸区,由此所述基础结构在此后部中和与后部相邻的裤裆部中具有可延伸性,且延伸到裤裆部的最窄处,在前述外罩层与体侧衬里层之间设有吸湿芯,后者从所述前部内延伸出,经裤裆部到达后部内,此吸湿芯在与其共同延伸的此吸湿制品后部的一个显著区域上并不附着到基础结构上,而是与所述吸湿芯共同延伸,这样,此基础结构便可与吸湿芯无关地在后部中延伸。
67.如权利要求66所述的吸湿制品,其特征在于,此吸湿制品在其前部包括相应的前述第二延伸区,而此第二延伸区是从中央区通过所述前部的前边缘进到此前部之内。
68.如权利要求56所述的吸湿制品,其特征在于,所述基础结构可在所述前部中此吸湿制品的相对侧上于各相应的所述可延伸区中延伸,而此吸湿制品在其沿前述纵轴线延伸且宽度较其最小宽度为小的中央区上则是不可延伸的。
69.如权利要求56所述的吸湿制品,其特征在于,所述基础结构可在沿所述纵轴线延伸的且宽度较所述吸湿制品最小宽度为窄的相关的前述中央可延伸区中延伸,所述吸湿制品包括设在它的所述前部、裤裆部以及后部中的所述外罩层与体侧衬里层之间的吸湿芯,此吸湿芯则并非有效地相对于此中央可延伸区固定到外罩层与体侧衬里层之上。
70.如权利要求56所述的吸湿制品,其特征在于,所述基础结构可在包括吸湿制品裤裆部的所述相应延伸区中延伸。
71.如权利要求70所述的吸湿制品,其特征在于,所述裤裆部包括相对于所述纵轴线朝外分开的腿部弹性织品,此腿部弹性织品可以在基本上完全伸展开的无应力条件下与所述基础结构同时共存;上述腿部弹性织品当基础结构于所述延伸区中沿第一方向延伸时延伸,当接附到吸湿制品的裤裆部上时一般无应力,而当此吸湿制品为用户穿用时则有应力。
72.如权利要求56所述的吸湿制品,其特征在于,所述吸湿制品没有腿部弹性织品。
73.如权利要求56所述的吸湿制品,其特征在于,所述吸湿制品没有腰部弹性织品。
CNB961999101A 1995-12-20 1996-11-20 含可延伸区的吸湿制品 Expired - Lifetime CN1253131C (zh)

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JP2000502268A (ja) 2000-02-29
IL124736A0 (en) 1999-01-26
AR005250A1 (es) 1999-04-28
EP0869757A1 (en) 1998-10-14
AU1079397A (en) 1997-07-14
NZ323770A (en) 2000-01-28
CN1253131C (zh) 2006-04-26
US5846232A (en) 1998-12-08
BR9612044A (pt) 1999-02-09
JP4173545B2 (ja) 2008-10-29
DE69633020D1 (de) 2004-09-02
AU715677B2 (en) 2000-02-10
CA2238444A1 (en) 1997-06-26
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KR20000064484A (ko) 2000-11-06
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RU2194480C2 (ru) 2002-12-20
WO1997022318A1 (en) 1997-06-26
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CO4750627A1 (es) 1999-03-31
KR100453476B1 (ko) 2005-01-15

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