CN1130182C - 具有可在多个方向上伸展的侧翼的吸湿用品 - Google Patents
具有可在多个方向上伸展的侧翼的吸湿用品 Download PDFInfo
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Abstract
本发明公开了如一次性使用的尿布、失禁用三角裤、尿布外套件、运动短裤、妇女卫生保健用内裤等吸湿用品,该吸湿用品包括可伸展的侧翼件,从而提高了围在穿用者腿部和腰部的尿布的动态贴身性。这类吸湿用品有一个密封组件和几个可伸展侧翼,上述组件包括一个透液顶片、一个不透液体的底片和设置在顶片和底片之间的吸收芯,每个可伸展侧翼沿第一腰区内的密封组件的各纵向边缘设置有一腰翼和一腿翼,腰翼和腿翼可供使用地相连,使得腰翼沿某方向具有主伸展方向,腿翼沿不同方向具有主伸展方向,因此形成了多方向可伸展的侧翼,其中腰翼可围绕穿用者腰部拉伸,从而保持与腰部贴合,使尿布贴合在穿用者身上,腿翼可伸长和收缩,从而保持与穿用者腿部四周的动态贴身。借此,腰翼和腿翼可减小动态力对吸湿用品的负面作用,例如可减小能导致泄漏的下垂和缝隙,并能增大运动的自由度,使穿用者感觉更舒适。
Description
技术领域
本发明涉及如尿布、失禁用的三角裤、尿布外套件、运动短裤之类的吸湿用品,更具体地说,涉及与穿用者的身体能保持动态贴身并具有良好的舒适性的带可伸展侧翼的吸湿用品。
背景技术
为了接收和容纳尿液及其它体内排泄物,婴幼儿和其他失禁者常需穿用如尿布之类的吸湿用品。吸湿用品的作用有两个:接收和容纳排泄物,并使排泄物与穿用者身体隔离且使排泄物和穿用者的短内裤和床单隔离。具有各种不同的基本结构的一次性吸湿用品已广为本技术领域普通技术人员所知,例如1967年1月31日授权于Du-ncan和Baker的题为“DisposableDiaper”的再公告美国专利26152描述了一种得到广泛使用并在商业上取得成功的一次性使用的尿布。
为了提供更好的贴身性并减少泄漏,很多吸湿用品都已经带有弹性件。1975年1月14日授权于Kenneth B.Buell的题为“Contractible Side PortionsFor Disposable Diaper”的美国专利3860003号公开了一种有弹性腿箍的一次性尿布,这种尿布也被广泛使用并取得了商业上的成功。1992年9月29目授权于Buell等人的美国专利5151092号公开了一种带弹性腰部件的吸湿用品,从而提高了吸湿用品的动态贴合性和密封性能。1989年8月15日授权于Wood等人的美国专利4857067描述了一种带有贴合在穿用者臀部的弹性侧翼的一次性使用尿布。上述弹性件均被设计成能随穿用者的运动伸长或缩回,因此,在穿用期间可保持这类吸湿用品与穿用者的身体贴身(即保持动态贴身)。
但是,业已发现,带弹性件的吸湿用品使用起来还是有可能出现缝隙或者太紧。当穿用者运动时其体围可能改变,尤其在臀部和大腿部位可能改变,因此尿布受到动态力,这些动态力可能使制成尿布的材料变形并可能使尿布偏离人体。结果将使尿布松驰下垂或与穿用者身体之间出现缝隙,尤其在运动部位例如与臀部和大腿部位之间更易出现缝隙。最初,传统的一次性尿布由不能弹性伸展的非弹性材料制成,因此不能与穿用者身体动作适配。通过把一体的弹性侧翼件加入到传统的一次性尿布中并使上述侧翼基本上沿横向围绕穿用者的腰部伸展可提高尿布的贴身性能和舒适性。然而,一体的弹性侧翼件只有在穿用者腿、臀、腰上施加过分的力时才能在除横向外的其它方向充分地弹性伸展。由于穿用者的运动在各个不同方向产生动态力,所以具有一体的弹性侧翼件的传统的一次性尿布仍可能与人体之间产生缝隙,从而增大了泄漏的可能性,并对穿用者产生作用力,这些力使穿用者感到不舒适,而且还可能使穿用者的皮肤引起紧勒斑痕。
于是,提供一种具有改进的可伸展侧翼的吸湿用品事在必行,在使用期间这种吸湿用品不仅贴身,使穿用者感到舒适,而且还能减少泄漏、下垂和与身体之间的缝隙。
发明内容
据此,本发明的一个目的是提供一种通过减小下垂及与穿用者之间的缝隙而改进穿用者腰部和大腿四周的动态贴身性能的吸湿用品。
本发明的另一目的是提供一种具有在多个方向上可伸展和回缩的多方向可伸展侧翼的吸湿用品,这类吸湿用品可使穿用者因运动而产生的动态力的影响减至最小,从而加大穿用者运动的自由度,使穿用者感到更舒适,同时能提高吸湿用品保持动态贴身的性能。
下面结合附图对本发明进行详细描述,通过描述将能更清楚地理解本发明的上述目的及其它目的。
本发明提供了如一次性使用的尿布、失禁用针织三角裤、尿布外套件、训练用短裤、妇女卫生保健内裤等吸湿用品,这类吸湿用品带有可提高其与穿用者大腿和腰部动态贴身性能的可伸展的侧翼件。上述吸湿用品具有一条纵向中心线、一条横向中心线、一个第一腰区和一个第二腰区,该吸湿用品包括:a)一个具有一对纵向边缘的密封组件,密封组件包括一个吸收芯;b)一个沿第一腰区内的密封组件的各条纵向边缘设置的可伸展侧翼,该可伸展侧翼从上述纵向边缘朝外横向伸出,所述各侧翼有一个邻近密封组件纵向边缘的近端边缘和与近端边缘横向朝外隔开的一个远端边缘,各侧翼包括一个腰翼和一个腿翼,腰翼位于腿翼纵向外侧,腰翼具有朝向横向中心线的方向偏斜的第一主伸展方向,所述腿翼具有背离横向中心线的方向偏斜的第二主伸展方向,而且腰翼和腿翼的第一与第二主伸展方向不平行。这就构成了可多方向伸展的侧翼,其中腰翼可绕穿用者的腰部伸展,从而保持尿布与腰部的配合,并使尿布紧贴穿用者身体,而腿翼可伸展和回缩,从而使其与穿用者的大腿周围保持动态贴身。于是,这类腰翼和腿翼减小了动态力在吸湿用品上所引起的导致泄漏的例如下垂和形成缝隙等负面效应,同时可增大穿用者的运动自由度,使穿用者感到舒适。
上述可伸展侧翼可以包括构成可伸展侧翼的单片可伸展料片或两个或多个彼此连在一起的分离件。此外,可伸展侧翼可以是吸湿用品其它部件的延伸或是与吸湿用品其它部件相连的单独构件。为使侧翼具有本发明的多方向伸展的特性,可对侧翼进行如打褶、起皱、环锭碾压机械加工。还可选择地使料片折叠、切成窄缝或切开,以便形成具有不同主伸展方向的各种不同的腰翼和大腿翼。
在另一些实施例中,这些多方向伸展特性可以从由具有不平行的主伸展方向的分离的腰翼件和腿翼件构成的可伸展侧翼中获得。在一个优选实施例中,腰翼有一个围绕穿用者腰部的主伸展方向,腿翼有一个与腰翼主伸展方向不平行的主伸展方向,最好与横向和纵向成一角度。对于这种结构。在吸湿用品使用期间,腰翼可弹性地缩回因而产生向内的力,这个力可使吸湿用品紧贴穿用者的身体,同时使腿翼随穿用者的腿部运动伸长和缩回。所以多方向上可伸展的侧翼减小了在吸湿用品的腰区和腿区出现缝隙的可能性,同时也减小了因拉伸和动态力而在穿用者皮肤上引起紧勒斑痕的可能性。
附图说明
虽然本说明书之后具体提出了清楚地限定本发明主题的保护范围的权利要求书,但是,通过下面结合附图的详细描述显然能更清楚地理解本发明。附图中,相同标号代表基本相同的部件,其中:
图1为本发明的一次性尿布实施例的平面图,图中为了展现出下层结构而切去了某些部分,尿布的内表面朝向观察者。
图2为在图1中所示尿布的可伸展侧翼内表面的局部放大图,图中为展现出底层结构而切去某些部分;
图3为在图1中所示尿布的可伸展侧翼外表面的局部放大图,图中为展现出底层结构而切去了某些部分;
图4为图1所示尿布的可伸展侧翼内表面的局部放大平面图,图中示出了相对于横轴而言腰翼的主伸展方向和大腿翼的主伸展方向。为了清楚起见,本图删去了图1中示出的带襻和硬挺衬件;
图5为多组件可伸展侧翼结构的平面图,其中腰翼和腿翼的远端边缘没有连在一起;
图6为一种聚合物絮网料片的优选实施例的平面图片,该絮网料片具有可拉伸网构,网构的变形朝向观察者;
图7为图6所示的聚合物絮网料片处于未拉伸状态下的片断透视图;
图8为图6所示的聚合物絮网的片断透视图,图中示出的是相应于图10所示的力-拉伸曲线中段I的拉伸状态;
图9为图6所示的聚合物絮网料片的片断透视图,图中示出的是相应于图10所示的力-拉伸曲线中段II的拉伸状态;
图10示出了图6所示的本发明的聚合物絮网料片的特性与另一相同的平整的聚合物絮网基体料片的特性相对比的阻力-拉伸百分比关系曲线;
图11为本发明的另一实施例的局部放大平面图,其中的可伸展的侧翼包括单一组成部件;
图12为本发明另一实施例的平面图,该例中为了形成一次性吸湿用品的可伸展侧翼、腰部件以及腿箍而将单片可伸展部件折叠起来。
具体实施方式
本文所用的“吸湿用品”一词指的是能吸收和容纳人体排泄物的组合件,更具体地说,指的是紧贴或贴近穿在穿用者身体上用以吸收和容纳人体排出的各种排泄物的组合件。本文所用的“一次性使用”一词用以描述那种不需洗涤或以其它方式使其复原或重复使用的吸湿用品(即使用一次后就扔掉的那种吸湿用品,最好是采取符合环保条例的措施将它们回收、变成堆肥或进行其它处理)。本发明吸湿用品的一个优选实施例是一种如图1所示的一次性吸湿用品-尿布20。本文中“尿布”一词指的是一般由婴幼儿和失禁病人穿戴在下身的吸湿用品。但是,应该想到本发明亦适用于其它吸湿用品,如失禁用三角裤、失禁用内裤、尿布外套件和衬垫、妇女卫生内裤、运动短裤等。
图1为本发明尿布20的平面图,图中示出的尿布处于展平的没有收缩的状态(即:将弹性引起的收缩拉平),为了更清楚地示出尿布20的结构而切去了构件的某些部分,尿布20的对着或接触穿用者身体的部分(即内表面)朝向观察者。如图1所示,尿布20最好包括一个密封组件22,该组件包括一个透液顶片24,一个与顶片24相连的不透液体的底片26和一个处于顶片24和底片26之间的吸收芯28。该尿布还包括若干弹性腿箍32、耳翼62、一个弹性腰部件34、一个由一对第一固定件40和一个第二固定件42组成的固定构件48以及若干可伸展的侧翼30。每个第一固定件40具有一条主中心线F,每一侧翼包括一个可伸展的腰翼36和一个腿翼38。每个可伸展侧翼30具有近端边缘80和远端边缘82。
尿布20也有两条中心线,一条纵向中心线100和一条横向中心线102。此处“纵向”一词指的是尿布20的通常对准(即近似于平行)一个垂直面的平面的直线、轴或方向,上述垂直平面是将穿戴尿布20的站立的穿用者平分为左半部和右半部的平面。本说明书中术语“横向”和“侧向”可以互换,它们指的是尿布上的通常垂直于纵向的平面上该平面将穿用者身体分成前半部和后半部的直线、轴、或方向。
如图1所示,可伸展侧翼30包括一个腰翼36和一个大腿翼38,将它们在收缩状态可工作地连接,从而使腰翼36和大腿翼38具有不平行的主伸展方向。(“腰翼”和“大腿翼”指的是可伸展侧翼的可伸展的组成部件,每个部件都有其主伸展方向。本说明书中“主伸展方向”指的是可伸展件具有的最大伸长的方向)。图1示出了本发明的一个优选实施例,其中腰翼36具有一个围绕穿用者腰部的主伸展方向,大腿翼38具有一个与腰翼36的主伸展方向不平行的主伸展方向。(图1中用箭头G表示腰翼36的主伸展方向,用箭头H表示腿翼38的主伸展方向。)在一个特别优选的实施例中,腿翼38的主伸展方向与上述侧向或纵向是不平行的。(侧向被定义为平行于尿布的侧向中心线的方向,纵向被定义为平行于纵向中心线的方向。)由于具有可伸展侧翼30,尿布20的两侧可伸长和缩回,使尿布20一开始就与穿用者身体适当贴身并在尿布20吸收了排泄物的整个穿用期间都能保持这种贴身,这种可伸展侧翼30可使人感到非常舒适并与体形适配。穿用期间,腰翼36可弹性地收缩,产生向内的力,该力可使尿布紧贴穿用者的身体适当部位。腿翼38随穿用者的腿部运动而伸长和缩短。所以这种可在多方向伸展的腰翼和腿翼减小了在尿布的腰区和腿区出现缝隙的可能性,而且减小了因拉紧和动态力在穿用者身上引起勒紧斑痕的可能性。
图1所示的尿布20具有一个内表面44(图1中朝向观察者),一个与内表面44相对的外表面46,一个第一腰区50,一个与第一腰区50相对的第二腰区52,一个处于第一腰区50和第二腰区52之间的裆区54以及由尿布20的外周边或边缘限定的外周,外周的纵向边缘用56代表,端边缘用58代表。尿布20的内表面44包括穿用期间贴近穿用者身体的尿布20的那部分(即通常至少由顶片24的一部分和与顶片24相连的其它部件的一部分形成的内表面44)。外表面46包括尿布20的远离穿用者身体的那部分(即,通常外表面46至少由底片26的一部分和与底片26相连的其它部件的一部分形成)。本说明书中“连接”一词的含义包括借助于将一个部件直接固定到另一部件上的方法将该部件与上述另一部件直接相连的结构,以及通过将一个部件固定到(一个或多个)中间件、再将中间件固定到另一部件上的方法使该部件与上述另一部件间接相连的结构。第一腰区50和第二腰区52从周边的端边缘58向裆区54延伸。第一腰区50由一个中心区60和一对可伸展的侧翼30组成,通常上述侧翼由第一腰区50的外部横向部分组成。第二腰区52由一个中心区72和一对耳翼62组成,通常上述耳翼由第二腰区52的外部横向部分组成。位于第一腰区50内的可伸展侧翼用30代表,而位于第二腰区52内的耳翼用62代表。
图1中示出的尿布20的密封组件22构成了尿布20的主体(基体)。密封组件22至少包括一个吸收芯28,最好还包括由顶片24和底片26组成的外部包覆层。当吸湿用品包括一个分开的固定件和一个衬垫时,通常密封组件22包括该固定件和衬垫(即,密封组件22由一层或多层限定固定件的材料制成,而衬垫包括如顶片、底片和吸收芯之类的复合吸收部分)。通常,密封组件22构成尿布的主构件,与其它部件结合起来形成尿布的复合结构。所以,尿布20的密封组件22通常包括顶片24,底片26和吸收芯28。
图1示出了密封组件22的一个优选实施例,组件中的顶片24和底片26的长和宽均大于吸收芯28的长和宽。顶片24和底片26均超出吸收芯28的边缘之外,从而形成了尿布20的周边。虽然顶片24、底片26和吸收芯28可以组装成各种公知的构形,但密封组件的构形最好组装成1975年1月14日授权于Kenneth B.Bull的题为“Contract-ible Side Portions forDisposable Diaper”的美国专利3860003号及1992年9月29日授权于KennethB.Buell等人的题为“Absorbent Article With Dynamic Elastic Waist FeatureHaving A Predisposed Resilient Flexural Hinge”的美国专利5151092号中所描述的构形,上述两篇文献均作为本发明的参考文献。
图2和3为可伸展侧翼30的局部放大视图,图中为了展现底层结构而切去了某些部分。图2示出了可伸展侧翼30的内表面,图3示出了可伸展侧翼30的外表面。在图2和图3示出的多组件的实施例中,可伸展侧翼30包括一个腰翼36和一个腿翼38,上述腰翼36具有腰翼近端边缘72、腰翼远端边缘74、腰翼第一横向边缘90和腰翼第二横向边缘92、上述腿翼38具有腿翼近端边缘78、腿翼远端边缘76、腿翼第一横向边缘94和腿翼第二横向边缘96。如图2所示,腰翼近端边缘72和腿翼近端边缘78可以连接在顶片24和底片26之间。还可选择地或将腰翼近端边缘72或将腿翼近端边缘78或者将上述两者与底片26的外表面46、顶片24的内表面44相连。此外,图2还示出了腰翼36和腿翼38可供使用地连成部分叠接的形状,其中腰翼远端边缘74连在腿翼远端边缘76上。
如图2所示,第一固定件40最好设置在靠近可伸展侧翼30的远端边缘82。最好将第一固定件40与腰翼36和腿翼38两者相连接。这样,第一固定件40上的力既可使腰翼36也可使腿翼38拉伸。图2还示出了处于靠近可伸展侧翼30的近端边缘80的近硬衬件84和处于可伸展侧翼30的远端边缘82的附近的远硬衬件86。近硬衬件84可防止各可伸展侧翼30的近端边缘80在使用中弯折,远硬衬件86有利于将固定构件48上的力分布在整个可伸展侧翼30上。如图2所示,近硬衬件84和远硬衬件86可以是通过现有技术中所公知的连接手段(未示出)连接到吸湿用品上的独立件,或者也可以是与吸收芯的一个部件成一体的整体件。
吸收芯28可以是任一种吸收件,通常它是可压缩的、使人感到舒适、对穿用者皮肤无刺激作用,它能吸收和保存如尿之类的液体和其它人体排泄物。如图1所示,吸收芯28有一外表面64,一内表面66,侧边缘68和腰部边缘70。可将吸收芯28制成各种不同尺寸和形状(如长方形、计时砂漏形、T形、非对称形等),也可以由常用于一次性尿布和其它吸湿用品中的各种吸收液体的材料制成,例如用常作为气毡(airfelt)的碎木浆制成。其它合适的吸收材料的例子有起皱的纤维素填絮;包括共成形物(coform)的熔吹聚合物;化学硬挺处理、改性处理或交联的纤维素纤维;包括薄织物包覆件和薄织物叠层的织物;吸湿泡沫;吸湿海绵;超吸湿聚合物;吸收胶凝材料;或任一种等同材料或几种材料的组合。
可以改变吸收芯28的外形和结构,例如吸收芯可以具有厚度改变的几个区、亲水性变化区、超吸收变化区、或低平均密度或低平均基重收集区;或者吸收芯可以由一层或多层,或多构件构成。但是,吸收芯28的总吸收能力应与所设计的载荷和尿布20所要使用的条件相适应。为了适合从婴幼儿到成人的大范围的穿用者,还可以改变吸收芯28的尺寸和吸收能力。
尿布20的一个实施例具有非对称、改型的T形吸收芯28,该吸收芯在第一腰区具有耳形而在第二腰区为普通长方形。1986年9月9日授权于Weisman等人的题为“High-Density Absorbent Structures”的美国专利4610678号;1987年6月16日授权于Weisman等人的题为“Absorbent ArticlesWith Dual-Layered Cores”的美国专利4673402号;1989年12月19日授权于Angstadt的题为“Absorbent Core Having A Dusting Layer”的美国专利4888231号;1989年5月30日授权于Alemany等人的“High DensityAbsorbentMembers Haying Lower Density and Lower Basis Weight AcquisitionZones”的美国专利4834735号所描述的吸湿芯可用作本发明的吸收芯28的典型的吸收构件,这些构件已被广泛应用并取得了商业上的成功。吸收芯还可以是如在1993年8月10日授权于Alemany等人的题为“AbsorbentArticle With Elastic Waist Feature and Enhanced Absorbency”的美国专利5234423号及1992年9月15日授权于Young,LaVon和Taylor的题为“HighEfficiency Absorbent Aticles For Incontinence Management”的美国专利5147345号中所详细描述的包括在吸收存贮芯上覆盖经化学硬挺处理的纤维的收集/分配芯双芯构件。上述所有文献均作为本发明的参考文献。
底片26邻近吸收芯28的外表面64,最好用现有的公知方式(未示出)将底片与吸收芯相连。例如可采用一层均匀连续的粘合剂层、一层呈图形状的粘合剂层或成分开的直线排列、螺线形排列或点状分布的粘合剂层将底片26固定在吸收芯28上。业已发现由H.B.Fuller Company of st.Paul,Minnesota生产的牌为HL-1258的粘合剂是令人满意的粘合剂。合适的连接方式的一个实例是在1986年3月4日授权于Minetola等人的题为“Disposable Waste-Contain-ment Garment”的美国专利4573986号中所描述的一种长丝状粘合剂开放的图形网构。另一种合适的连接方式是由几根长丝状粘合剂线盘绕而成的螺旋形花纹,这类图形在1975年10月7日授权于Sprague,Jr的美国专利3911173号、1978年11月22日授权于Ziecker等人的美国专利4785996号、1989年6月27日授权于Werenicz的美国专利4842666号中示出的装置和方法中已有说明。上述每篇文献均为本发明的参考文献。此外,上述连接方式还可以是加热粘接、加压粘接、超声粘接、动态机械粘接或者任一种公知的合适的连接方式,或上述公知的连接方式的组合。
底片26是不透液体(如尿液)的,虽然可采用其它柔软的不透液体的材料,但最好底片由薄塑料膜制成。此外“柔软”一词指的是柔顺的很容易随人体的一般形状和体位一起改变的材料。底片26可防止被吸收芯28吸收和容纳的排泄物弄湿与尿布20接触的用品(例如床单和内裤)。此外,底片26在阻止排泄物透过的同时可允许蒸汽从吸收芯28中逸出(即是可透气的)。所以,底片26可以是一种纺织物或无纺材料,如聚乙烯或聚丙烯的热塑膜之类的聚合物膜,或如覆膜的无纺材料之类的组合材料。一种合适的底片是一种厚度从约0.012mm(0.5mil)至约0.051mm(2.0mil)的热塑膜。其它适合于底片26的材料包括由Tredegar Industries,Inc of Terre Haute,IN生产的RR8220吹塑薄膜和RR5475铸型薄膜。最好对底片26进行压花和/或消光精制,使其看起来更象布。
顶片24位于吸收芯28内表面66附近,最好用公知的手段(未示出)将顶片连到吸收芯及底片26上。合适的连接方式可参照将底片26与吸收芯28相连的有关描述。在本发明的一个优选实施例中,顶片24和底片26在尿布的周边55部分彼此直接连接,或借助于上述连接手段(未示出)间接连到吸收芯28上。
顶片24应柔爽,感觉舒软而且对穿用者皮肤无刺激作用。此外,顶片24最好可透液体,并使液体(如尿液)迅速透过其厚度。可采用很多材料(如多孔泡沫、网状泡沫、多孔塑料薄膜,或天然纤维(如木质纤维或棉纤维)、合成纤维(如聚酯纤维或聚丙烯纤维),或天然纤维和合成纤维的组合的纺织物絮网或无纺絮网制成合适的顶片24。为了使穿用者的皮肤与透过顶层24被容纳在吸收芯28中的液体隔离(即防止再润湿),顶片24最好由疏水材料制成。如果顶片24由疏水材料制成,至少应将顶片24的上表面处理成亲水性的,以便使液体能更快地透过顶片。这可减小体液不是通过顶片24吸走后被吸收芯28吸收而是流出顶片24的可能性。用表面活性剂对顶片24进行处理可将其变成亲水性的。用表面活性剂处理顶片24的合适的方法包括用表面活性剂喷涂顶片24材料及将上述材料浸在表面活性剂中。在1991年1月29日授权于Reising等人的题为“Absorbent Anicles With MultipleLayer Absorbent Layers”的美国专利4988344号和1991年1月29日授权于Reising的题为“Absorbent Articles With Rapid Acquiring Absorbent Cores”的美国专利4988345号中对这种处理和亲水性进行了更为详细的讨论,上述每篇文献都作为本发明的参考文献。
可以用于生产顶片24的制造工艺很多。例如,顶片24可以是一种纤维的无纺絮网。当顶片24由一种无纺絮网制成时,絮网可采取纺粘、梳理、湿法成网、熔吹、水力缠结、上述措施的组合或类似措施制成。用化纤领域普通技术人员所熟知的方式可对一种合适的顶片24进行梳理和热粘合。一种令人满意的顶片24包括约2.2旦尼尔的长纤维聚丙烯纤维。此处所述的“长纤维”指的是长度至少约为15.9mm(0.625英寸)的这类纤维。顶片24的基重最好约为18克/平方米至约25克/平方米。由Veratec,Inc.a Divisionof Int-ernational Paper Company,of Walpole,Mass.生产的牌号为P-8的顶片是一种合适的顶片。
尿布20最好还包括由弹性线制成的腿箍32,这种腿箍可以提高容纳液体和其它人体排出物的性能。为了减少人体排泄物从腿区的泄漏,各个用弹性线制成的腿箍32可以有各种不同的具体结构(这种腿箍可以是(有时也称为)腿带、侧翼、阻挡箍或弹性箍。)美国专利3860003号公开了一种一次性使用的尿布,该尿布具有带一个侧翼和一个或多个弹性件的可伸缩腿部开口,以形成弹性腿箍(密封箍)。在1990年3月20日授权于Aziz等人的题为“Disposable Absorbent Article Having Elasticized Flaps”的美国专利4909803号中描述了一种带竖立的弹性翼(阻挡箍)的一次性尿布,其中的弹性翼可提高腿区的密封性能。在1987年9月22日授权于Lawson的题为“Absorbent Article Having Dual Cuffs”的美国专利4695278号公开了一种具有双箍的一次性尿布,上述双箍包括一个密封箍和一个阻挡箍。尽管可将每个弹性腿箍32加工成类似于上述的任一种腿带、侧翼阻挡箍或弹性箍的形状,但是每个弹性腿箍32还都包括一个如上述参考文献美国专利3860003号中所描述的密封箍。
此外,尿布20还包括一个有助于提高配合和密封性能的弹性腰部件34。弹性腰部年34是尿布的一部分或一个区,该区可以弹性伸长和收缩,因此能与穿用者的腰部保持动态贴身。弹性腰部件34最好从吸收芯28的至少一条腰部边缘70沿纵向朝外伸展,一般来讲该件构成尿布20的端部边缘58的至少一部分。虽然尿布可以只有一个弹性腰部件,但通常一次性尿布的结构中带有两个弹性腰部件、一个位于第一腰区50内,一个处于第二腰区52内。另外,虽然弹性件34或它的任一组成部件可以是一个固定在尿布20上的独立件,弹性腰部件34亦可是尿布的其它部件的延伸部分,例如是顶片24或底片26的延伸部分,最好是顶片24和底片26两者的延伸部分。可将弹性腰部件34加工成各种不同的形状,包括在1985年5月7日授权于Kie-vit等人的美国专利4515595号及前面引述过的授权于Buell的美国专利5151092号中所描述的形状。上述每篇文献均为本发明的参考文献。
在本发明的一个优选实施例中,尿布20还包括耳翼62,所述耳翼从第二腰区52内的密封组件22的各纵向边缘56横向朝外延伸。耳翼62提供一种与第一腰区50相连而包围穿用者的腿部和腰部的结构。耳翼62可选择多种尺寸、形状、结构和材料。耳翼62可以是制成包括顶片24和底片26在内的一个或多个尿布部件材料的一部分。也可选择将耳翼62加工成固定到尿布上的一个独立件或多个部件。适于用作耳翼62的材料有:纺织物絮网;无纺物絮网;包括聚合物薄膜在内的薄膜;泡沫材料;包括膜叠层、无纺物叠层或无拉伸叠层在内的叠层材料;合成橡胶;复合材料;或此处所述材料的任何组合,或现有技术中公知的已描述过的用于可伸展侧翼的材料。可用任何公知的方式将耳翼62连到密封组件22上,例如可采用加热或不加热的粘合剂、加热粘接、加压粘接、超声粘接、动态机械粘接或现有的其它公知方法将耳翼62无间断地或有间断地连接到密封组件上。
另外,尿布20包括一个安排在尿布20的密封组件22的每条纵向边缘56附近的可伸展侧翼30,最好使上述侧翼设在第一腰区50中。(此外“安排”一词指的是将吸湿用品的一个(或几个)部件在具体部位或位置构成(连接和定位)为与吸湿用品的其它部件成一体的构件或作为一个独立部件与吸湿用品的其它部位相连的构件。)可伸展的侧翼30有一个弹性拉伸件,因此当尿布吸收了人体排泄物时,由于可伸展侧翼30,尿布20的两侧可伸长和缩回,借助于一开始就将尿布20与穿用者身体的恰当贴身并在整个穿用期间都能保持这种贴身,可使人感到非常舒适并与体形适配。由于即使尿布使用者将尿布穿戴成不对称,在穿戴期间尿布可“自调整”成更为贴身,这样,这种可伸展侧翼30使尿布适用性更强。本发明的可伸展侧翼30还可提高与穿用者的腰围及腿围的动态贴身性能,减小尿布在腰部和腿部下弯和出现缝隙的可能性,因而也减少了因缝隙而引起的泄漏,同时还增大了穿用者运动的自由度,使穿用者身体各部位的感觉都很舒适。
每个可伸展侧翼30包括一个腰翼36和一个腿翼38。腰翼36的主伸展方向与腿翼38的主伸展方向不同,因此,可伸展侧翼30具有可在多方向上拉伸的特性。腰翼36是可伸展侧翼30的一部分或一部件,此部分是为使尿布20能一开始就紧贴穿用者的腰围而设计的,一旦“激活”,使腰翼可随穿用者的运动动态伸长和缩回,保持尿布20的腰部成贴身状态,而且在整个穿戴期间都感到很舒适。腰翼36有一个腰翼近端边缘72、一个沿横向与腰翼近端边缘72相对的腰翼远端边缘74、一个在腰翼近端边缘72和腰翼远端边缘74之间延伸的第一横向边缘90以及一个纵向与第一横向边缘90相对的第二横向边缘92。在一个优选实施例中,将腰翼36配置成使第一横向边缘90离密封组件22的横向中心线102的距离远于第二横向边缘92离密封组件的横向中线的距离,而且该腰翼36构成尿布20的端部边缘58的一部分。
腰翼36含有一种沿穿用者腰围具有主伸展方向(用箭头G表示)的可伸展料片。在一个优选实施例中,腰翼36的主伸展方向包括方向为横向朝外、大小大于零的第一矢量分量和方向朝向横向中心线102、大小大于或等于零的第二矢量分量。更优选地,腰翼主伸展方向的第一矢量分量大于第二矢量分量。(但是,应注意的是,腰翼36的全部或部分也可以沿与主伸展方向不同的方向伸展。)图4中角A代表腰翼36主伸展方向与平行于横向中心线102的横向轴104之间的夹角(顺时针方向或逆时针方向测量)。(图4中,角A是从横向轴104沿顺时针方向测得的。)角A推荐偏离横向约为0°至45°之间,较好的是偏离横向约为5°至20°之间,最好偏离横向约为10°至约15°之间。
腿翼38是可伸展侧翼30的一部分或一部件,此部分是为使其在尿布围住穿用者腿部的外部大腿区时可随穿用者动态运动伸长和缩回而设计的。腿翼38有一个腿翼近端边缘78、一个在横向与腿翼近端边缘78相对的腿翼远端边缘76、一个在腿翼近端边缘78和腿翼远端边缘76之间延伸的第一横向边缘94以及一个沿纵向与第一横向边缘94相对的第二横向边缘96。腿翼38最好邻近密封组件22的纵向边缘56,并且从比腰翼36更紧靠密封组件22的横向中心线102之处横向朝外延伸。最好使腿翼38的第二横向边缘96与密封组件22的端边缘58的距离远于第一横向边缘94离端边缘的距离。在一个优选的实施例中,当将尿布穿戴在穿用者身上时,第二横向边缘96构成尿布20的包围穿用者大腿的一部分。
腿翼38包括一种具有与腰翼的主伸展方向不平行的主伸展方向(用箭头H表示)的可伸展料片,最好该主方向与横向和纵向成一角度。在一个优选实施例中,腿翼的主伸展方向包括方向为横向向外、大小大于零的第一矢量分量和方向远离横向中心线102、大小大于或等于零的第二矢量分量。(腿翼的全部或部分也可以沿与主伸展方向不同的方向伸展。)如图4所示,角B表示腿翼主伸展方向和横轴104之间的夹角。(此外所指的角B是从横轴104沿反时针方向测得的。)推荐角B与横向夹角在约0°和40°之间,较好的是在约10°和35°之间,最好在约20°和约30°之间。在一个优选实施例中,当尿布20开始被穿戴在穿用者身上时,腿翼38包围穿用者腿部的外腿部分。一旦“激活”,腿翼38可随穿用者腿部运动动态地伸长和缩回,因此,在整个穿用期间能保持与穿用者的腿围舒适地贴合。这就提高了尿布的密封性能,同时减小了在穿用者皮肤上引起勒紧斑痕的可能。
可将上述腰翼36和腿翼38(即可伸展的侧翼30)制成各种尺寸、各种形状和各种结构,它们也可由各种不同材料制成。可以根据用户要求的尺寸和可伸展侧翼30的适当的结构恰当地确定可伸展侧翼30以及腰翼36和腿翼38的长、宽和厚。因此,为了具有如本说明书所述的本发明的多方向拉伸特性,只要将腰翼36可供使用地与腿翼38和尿布的密封组件22相连,至于腰翼36的尺寸和形状,可以与腿翼38相同,也可以不同。一种适于中等身材婴幼儿穿用的合适的可伸展侧翼30的实例通常为梯形,其纵向尺寸在约5.08cm(2英寸)和10.16cm(4英寸)之间,横向尺寸在约5.08cm(2英寸)和12.7cm(5英寸)之间。
可伸展侧翼30可以是一个单独的可伸展料片,或者是将两个或多个可伸展件可供使用地连在一起而形成可伸展侧翼30。此处所用的“单一组成部分的可伸展侧翼”或“单一组成部分的实施例”指的是本发明的可伸展侧翼,其中可伸展侧翼是单独一个可伸展件。此处所用的“多组件可伸展侧翼”或“多组件的实施例”指的是本发明的由两个或多个可伸展件可供使用地连在一起构成可伸展侧翼30的那些实施例。在一个优选实施例中,可伸展侧翼30包括一个以上最好是两个可伸展件、一个构成腰翼36的腰翼件37和一个独立的构成腿翼38的腿翼件39。可以由尿布的其它部件的延伸部分,例如底片26、顶片24或两者的延伸部分构成上述可伸展件,或者上述可伸展件全部都是固定到密封组件22上的独立件。
可伸展侧翼30的近端边缘80与尿布的密封组件22的一条纵向边缘56相邻。在一种结构中,可伸展侧翼30的近端边缘80处于顶片24和底片26之间。当然,可伸展侧翼30可以不同的结构与密封组件22相连。例如,可以将可伸展侧翼30的近端边缘80连到底片26的外表面46上,或连到顶片24的内表面44上。其它可供选择的方案是在腰翼36和腿翼38是一些分开的可伸展件的多组件的实施例中,可将腰翼件37和腿翼件39设置在相同表面或不同表面上,或者将它们设置在顶片24和底片26之间。而在另一些实施例中,可将可伸展侧翼30设置在与密封组件22相连的一个单独件上。
最好通过如本领域普通专业人员所熟知的连接方式(未示出)使可伸展侧翼30与密封组件22相连或与尿布20相连。一种将各类可伸展侧翼30连到密封组件22上的合适的方法是熔融粘合法(即:超声、加热或加压粘合)。还可选用粘合剂、液压机械粘合或任一种公知的其它方法将可伸展侧翼30断续地或连续地连接到密封组件22上。
在如图1、2和3所示的本发明的优选实施例中,至少腰翼36的一部分与腿翼38连在一起。最好将腰翼远端边缘74的至少一部分与腿翼远端边缘76的至少一部分相连。在一些多组件的实施例中,最好将腰翼远端边缘74和腿翼远端边缘76连接成至少部分地重叠的结构。这种结构可确保施加在邻近可伸展侧翼30的远端边缘82设置的第一固定件40上的一些力既对腰翼36起作用又对腿翼38起作用,因此它们可随穿用者的运动伸长和收缩。可以用粘合剂、加热粘合、加压粘合、超声粘合、液压粘合或其它任何一种公知的连接方式将腰翼36和腿翼38连接在一起。
此外,如图5所示,多组件可伸展侧翼30的腰翼件37和腿翼件39能够在开始彼此不连在一起。腰翼远端边缘74和腿翼远端边缘76分开,每一个可伸展件都有连接在它们上面的单独的固定部分。将尿布20围绕穿用
者身体固定时,这种结构可使尿布使用者在构成腰部件37和腿部件39的可伸展件的远端边缘之处有较大的调节余地。例如,在这种结构中,可将腰翼件37和腿翼件39各自分开固定到尿布20上,也可将腰翼件37可解开地固定到腿翼件39上,或将腿翼件39可解开地固定到腰翼件37上。采用前面关于腰翼件和腿翼件部分已讨论过的固定部件或其它连在腰、腿翼件上的固定件(如钩和环式固定件)可使腰翼件37和腿翼件39在很多部位彼此固定。
每个可伸展侧翼30可以是任何适合的可伸展、可伸长或具有弹性的料片。(此外,“可伸展”一词指的是至少在一个尺寸上可增大的料片;“可伸长”指的是在料片上施加拉伸力时,料片可伸展并呈现某种阻止伸展的力;“具有弹性”指的是当施加力时,料片至少可在一个方向伸长,而取消该力时,料片回缩到接近其原始尺寸。)业已发现,特别适用于腰翼36和腿翼38的一种弹性料片是一种在面层原料层(coverstock layers)之间夹有一层弹性薄膜的两层面层原料叠层。此处所用的“面层原料”可以包括任何纺织材料或无纺材料。一种合适的面层原料片的例子是由Veratec,Inc.,aDivision of the International Paper Company,of Walpole,Mass.生产的牌号为P-8的无纺材料。一种适于夹在面层原料层之间的薄膜的例子是由ExxonChemical Company of Lake Zurich,IL.生产的Exx-500(以前为Exx-7)弹性薄膜。其它可用作可伸展侧翼和侧翼件或在其中可采用的合适材料包括下面将要描述的类似松紧带的结构膜(SELF)絮网、合成或天然橡胶、合成或天然泡沫橡胶、具有弹性的稀布、纺织物或无纺弹性絮网、如弹性无纺叠层之类的弹性组合物、无应力拉伸叠层(Zero Strain Stretch lamina-tes),预应力拉伸叠层等。1992年9月29日授于Buell等人的题为“Absorbent ArticleWith Dynamic Elastic Waist Feature Having a Predesposed Resilient FlexuralHinge”的美国专利5151092号披露了一些合适的无应力拉伸叠层和预应力拉伸叠层,本发明以此为参考文献。
类似松紧带的结构膜(SLF)絮网是一种不用附加弹性材料就可在拉伸方向呈现类似于弹性性能的可伸展料片。上述SELF絮网包括一种具有至少两个相邻的不同和不相似的区域的可拉伸网构。上述区域之一的形状使该区在其它区的主要部分产生阻碍拉伸的明显阻力之前展现出在平行于预先确定的轴的方向上对外加的轴向拉伸的阻力。在料片为未拉伸状态下沿大体平行于预先确定的轴的方向进行测量时,上述区域中的至少一个表面路径长度大于其它区域的表面路径长度。具有较长的表面路径长度的那个区域包括伸到其它区的平面之外的一种或几种变形。当SELF絮网受到一个外加平行于预先确定轴的方向上拉伸时,该SELF絮网呈现出至少两个明显不同的阻碍沿至少一个预定轴方向拉伸的可控阻力段。SELF絮网展现阻碍该外加拉伸的第一阻力,直到该絮网的拉伸大到足以使具有较长的表面路径长度的该区的主要部分进入外加拉伸平面为止,随后该絮网呈现出阻碍进一步拉伸的第二阻力。此时阻碍拉伸的总阻力大于第一区所提供的阻碍拉伸的第一阻力。
在一个优选实施例中,可拉伸的絮网料片可以是一种成形的聚合物膜。该可拉伸絮网料片可以由在一种穿戴时尿布在正常的力的作用下具有相对低弹性的基料构成。但是,将基料加工成此处所描述的可拉伸絮网料片时,成形基料在这些力作用下是可伸展的。也可将上述可拉伸絮网料片加工成在特定的预先选择的拉伸率和力点产生“力垒”的结构。该可拉伸絮网料片最好主要由线性低密度聚乙烯(LLDPE)材料组成。可拉伸絮网料片也可以由其它聚烯烃如聚乙烯,包括低密度聚乙烯(LDPE)、超低密度聚乙烯(ULDPE)、高密度聚乙烯(HDPE),或聚丙烯、聚丙烯与上述材料和其它材料的混合物等制成。可以采用的其它适合的聚合物材料的例子包括(但不限于)聚酯、聚氨酯类、可腐烂的或可生物降解的聚合物、热缩性聚合物、热塑橡胶、和可透气的聚合物结构材料。
可将上述可拉伸絮网料片以各种不同形式用于尿布20的可伸展侧翼30中。适合的类似于松紧带的结构膜的一个例子是一种叠层。该叠层包括一个固定在两个沿纵向可伸展的最好是梳理过的无纺絮网之间的可拉伸絮网料片。(此外,还可将这种可拉伸絮网料片用于上述吸湿用品的各种其它部件上。)图6和7示出的可拉伸絮网料片基本处于未拉伸状态。可拉伸絮网料片有两条中心线,一条纵向中心线(此处和后面称作轴或方向“l”)和一条横向中心线(此处和后面称作轴或方向“t”)。横向中心线“t”一般垂直于纵向中心线“l”。在一个优选实施例中,可拉伸絮网料片的纵向中心线1与尿布20的纵向中心线L对中。但是,在其它实施例中,絮网料片的纵向中心线l可以为其它走向,此走向取决于所希望的伸展方向。
如图6和7所示,可拉伸絮网料片660包括不同和不相似区域的可拉伸网构。此处,“可拉伸网构”一词指的是一些区域的一组彼此相连和互相有关的区域,这些区域可以在一预定方向伸展到某一有用的程度,在上述方向上使可拉伸絮网料片具有一个类似于弹性的较低阻力段和一个较高阻力段。上述可拉伸网构包括至少一个第一区664和一个第二区666。第一区664的弹性模量为E1,横截面积为A1,第二区666的弹性模量为E2,横截面积为A2。第一区和第二区都有第一表面和与之对置的第二表面。在图6和7所示的优选实施例中,可拉伸网构包括若干第一区664和若干第二区666。第一区664有一第一轴668和一第二轴669,其中第一轴668最好长于第二轴669。第一区664的第一轴668大体平行于可拉伸絮网料片660的纵轴l,而第二轴669大体平行于可拉伸絮网料片660的横轴t。第二区666有一第一轴670和一第二轴671,第一轴670大体平行于可拉伸絮网料片的纵轴,而第二轴671大体平行于可拉伸絮网料片的横轴。在图6的优选实施例中,第一区664和第二区666基本为长条形,并大体沿平行于可拉伸絮网料片的纵轴方向连续伸展。
在图示的实施例中,将可拉伸絮网料片的一部分成形为使得絮网在大体平行于纵轴的方向受到轴向拉伸时整个可拉伸絮网料片沿预先确定的轴向(在图示的实施例的情况中,大体为平行于该絮网料片的纵轴)具有可控制的阻力。此处“成形”一词指的是在絮网料片上形成所要求的结构或几何形状,当絮网料片没有受到任何外加的伸长或力时,絮网料片大体能保持这种所要求的结构或几何形状。用于成形例如此处所描述的可拉伸的絮网材料的适合的方法包括(但不限于)用啮合板或轧辊压花、加热成形、高压液压成形或铸塑。
本发明中所采用的絮网料片由一些相邻的“不同的”和“不相似”的区域的可拉伸网构组成,其中上述可拉伸网构包括至少一个第一区和一个第二区,第一区的表面路径长度短于第二区的表面路径长度。表面路径长度是在料片处于未拉伸状态时沿平行于预先确定的轴方向测出的。此处所用的“已成形部分”指的是由可拉伸网构的具有所要求的结构或几何形状的料片组成的那部分。此处所用的“表面路径长度”一词指的是平行于预先确定的轴的方向上沿所考虑的区的外形表面的测量值。此处所用的“不同”或“不相似”一词当特指区域时,指的是絮网料片处于未拉伸状态沿平行于一个预先确定的轴进行测量时具有可测量的不同表面路径长度的可拉伸网构中的那些区域。
在图6和7所示的优选实例中,第一区664大体是一个平整的区域,也就是说可拉伸絮网料片经受成形步骤之前和之后大体处于相同的状态。第二区666包括若干连续的、彼此相连的变形部分674,这些部分交替地伸出第一区664的第一表面和第二表面(用664A和664B代表)两者之外。在另外的一些实施例中,变形部分674可以只伸出第一区的第一表面之外或者只伸出第一区的第二表面之外。
变形部分674具有一个大体平行于絮网料片横轴的第一轴676和一个大体平行絮网料片纵轴的第二轴677。变形部分674的第一轴676至少等于最好大于第二轴677。为了改善本发明(侧翼)的两段阻力与伸长的关系特性,第一轴676与第二轴677之比至少为1∶1,最好为2∶1或更大。通常此比率越大,絮网料片的两段阻力与伸长的关系特性越明显。
第一区664和第二区666都有“投影路径长度”。此处所用的“投影路径长度”一词指的是从垂直于絮网料片的表面看到的某区域的长度,该长度是在平行于可拉伸絮网料片660的预先确定的轴(即平行于纵轴)的方向上进行测量的。第一区664的投影路径长度和第二区666的投影路径长度彼此相等。
但是,当絮网料片处于未拉伸状态沿平行于絮网料片的纵轴对其外形进行测量时,第一区664的表面路径长度L1小于第二区666的表面路径长度L2。为了确保可拉伸絮网料片660的两段阻力与伸长的关系特性,第二区666的表面路径长度至少比第一区的表面路径长度约大15%,较好的是比第一区的表面路径长度约大30%,最好比第一区的表面路径长度约大70%。
上述絮网料片660呈现的改进的“泊松横向收缩效应”大大小于现有技术中另一个相同的未成形絮网料片的泊松横向收缩效应。此处所用术语“泊松横向收缩效应”描述的是料片受到伸长时的横向收缩能力。本发明的絮网料片的泊松横向收缩效应在絮网伸长约为20%时最好小于约0.4。当絮网料片伸长为约40%,50%或者甚至为60%时,该絮网料片的泊松横向收缩效应最好小于约0.4。更理想的是絮网料片的伸长为20%、40%、50%或60%时,该料片的泊松横向收缩效应小于约0.3。
对于上述可拉伸絮网料片,用箭头680代表的轴向伸长方向大体垂直于变形部分674的第一轴676。(其轴向伸长量为距离D。)由于变形部分674能沿大体垂直于它们的第一轴676的方向伸展,引起可拉伸絮网料片伸展的轴向伸长的方向也大体垂直于变形部分674的第一轴676。
用箭头680代表的轴向伸长的方向大体垂直于变形部分674的第一轴676时,具有纵向分量的轴向伸长将导致可拉伸絮网料片沿轴向伸长方向伸展。
图10示出了本发明的成形聚合物絮网料片的典型的力-伸长关系曲线720以及由平整的制成絮网料片的聚合物膜基的类似曲线710。参见力-伸长关系曲线720,它包括用720a代表的初始的基本为线性的较低的力-伸长比的关系曲线段I、用720b代表的过渡区、以及大体为线性的用720c代表的段II,段II显示出与阻力垒相应的高得多的力-伸长特性,超过该阻力垒絮网料片可能产生附加的永久变形。
如图10中所看到的那样,当具有一个可拉伸网构的成形絮网料片受到一个外加的沿平行于它的纵轴方向拉伸时,呈现出可控多段性能。曲线720的段I(720a)和段II(720c)之间的阻力-伸长关系明显不同,与之相比,曲线710不具有这种特性。现在参见图6,当絮网料片受到如图6中用箭头680代表的轴向伸长时,具有较短的表面路径长度L1的第一区664提供阻碍相应于段I的外加的拉伸初始阻力P1的大部分。同时在段I内,由于第二区666中的变形部分大都处于外加拉伸平面之外而对拉伸的阻碍作用最小。在段I和段II之间的过渡区中,变形部分674正在变为与外加拉伸方向一致。正如在图9中所见到的那样,在段II中第二区666中的变形674已经基本上变为与外加拉伸的平面一致,开始阻止进一步伸长。此时第二区666产生一个阻碍进一步伸长的第二阻力P2。阻碍拉伸的第一和第二阻力形成一个总阻力PT,该阻力大于第一区所提供的阻力。段II中力-伸长曲线的总斜率呈现出力垒特性,该段曲线的斜率明显大于段I中力-伸长曲线的总斜率。
当(L1+D)小于L2时,阻力P1比阻力P2大得多。当(L1+D)小于L2时,第一区664提供初始阻力P1,该阻力通常满足下述方程:
当(L1+D)大于L2时,第一区和第二区提供一个阻碍外加拉伸D的总合力PT(阻力),该阻力通常满足下述方程:
(其中“*”代表相乘符号)
段I中出现的最大伸长被认为是絮网料片的“有用拉伸”。通过观察力-伸长曲线720可以有效地确定上述“有用拉伸”,在段I和段II之间的过渡区内出现转折的大致的点是“有用拉伸”的百分比伸长点。有用拉伸的范围可从约10%变化到100%或更高,这个类似于弹性响应的范围对一次性吸湿用品来说是一个重要的范围,借助于使第二区666的表面路径长度L2超过第一区664的表面路径长度L1以及利用基膜的特性基本上可以对此范围进行控制。为了使基膜的百分伸长与絮网660的百分伸长相同所需要的力要大得多。通过调节未拉伸状态下的路径长度L1和L2,可以根据需要控制段I的大致范围。通过调节第一区664的宽、厚和间隔以及基膜的特性可控制段I的力-伸长特性。
当图6的絮网料片受到外加拉伸时,随着絮网在外加拉伸方向的伸展,絮网料片呈现出类似于弹性的性能,除非伸展超出屈服点,一旦取消所施加的力,絮网料片就大体收缩到未被拉伸的状态。絮网料片能够在不丧失基本复原性能的情况下经历多次外加的拉伸作用。于是,一旦撤消外加拉伸或外力,絮网料片就基本上能缩回到未拉伸状态。
虽然絮网料片可以很容易沿轴向伸长方向即大体垂直于变形部分674的第一轴676的方向伸展和复原,但在大体平行于变形部分674的第一轴676的方向上絮网料片却是相对不可伸展的。加在变形部分674上的塑性变形使上述变形部分大体沿垂直于上述变形部分的第一轴的方向伸展,而在大体垂直于伸展的方向即大体平行于变形部分的第一轴的方向却是相对不可伸展的。在另外一些实施例中,为使可拉伸絮网料片660在多于一个方向伸展,可使可拉伸絮网料片660具有从中心向外延伸的第一区664和以同心圆的形式分布在中心周围的第二区666。
絮网料片伸展所需的外力的大小与形成絮网料片的材料的固有性质、非变形区664的宽度和间距有关,非变形区664宽度愈窄、间距愈大则为获得所要求的伸长所需的外拉伸力愈小。非变形区664的第一轴668(即长度)最好大于第二轴669(即宽度),推荐的长度与宽度之比在5∶1和300∶1之间。
还可以改变变形部分674的深度和数目,用以控制伸展本发明的絮网料片所需的力或该絮网料片的伸长。在一个优选实施例中,用两块外形尺寸为12.7cm×30.48cm×1.905cm(5.0英寸×12英寸×0.75英寸)的刚性板可加工出上述变形部分。每块板的一个表面上有一系列啮合齿,这些齿的横截面大体为三角形,齿底尺寸为0.076cm(0.030英寸),顶部是顶点半径为0.020cm(0.008英寸)的圆锥形。齿中心线的间距均匀,为0.076cm(0.030英寸)。在一块板的有齿的一侧,切割出若干彼此平行并垂直于平均间隔的齿的槽。上述槽宽为0.078cm(0.031英寸),且连续分布在板的整个长度上,槽与槽之间以0.635cm(0.25英寸)的中心间距彼此隔开。这些槽与料片变形絮网的非变形区相对应。
将推荐的LLDPE基料放在两板之间,两板置于液压机中,为使压力均匀分布,液压机工作台压板的面积大于上述两块刚性板。对上述两板施加的压力负荷至少为1816kg(4000磅)。然后将已成形的絮网料片从两板之间取出。若变形部分数目一定,变形部分上造成的变形的高度或变形程度增大,则有用伸展或伸长增加。与此类似,若给定变形高度或变形程度,变形部分的数目或频率增加,则有用拉伸或伸长增加。
业已发现,包括拉伸力、拉伸模量、有用拉伸(伸展)、收缩力、弹性蠕变、弹性滞后及可伸展侧翼30的收缩率在内的伸展特性对于可伸展侧翼30和尿布20性能而言都是很重要的考虑因素。这些伸展特性使尿布使用者和穿戴者在使用期间全面感到“拉伸”。这些特性对尿布的可得到的适度的使用伸展也有影响(即,对使用期间所感到的尿布的正常张力而言,最后的拉伸总量是一个希望能达到/保持非常舒适的贴身的量)。拉伸模量较大的可伸展侧翼可能在穿用者皮肤上引起勒紧斑痕,而拉伸模量较小又可能使吸湿用品下垂/或在穿用者身上滑动。有用拉伸量太小的侧翼不能达到适度的身体舒适性,穿戴这种尿布很不舒服,对穿用者来说很难穿上。具有收缩力非常小的可伸展侧翼的尿布不能紧贴穿用者身体,它们可能下垂或在穿用者身上滑动,因此贴身和密封性能都很差。
一般的可拉伸材料的应力-应变特性中呈现出力滞后回线。也就是说,对于一个给定的伸展量,使可伸展材料单轴向伸展所需要的力(拉伸力)大于
可伸展材料从预伸展状态回缩时可伸展材料回缩的力(收缩力)。前一曲线被称之为“加载曲线”,而后一曲线被称之为“卸载曲线”。尿布使用者拉伸可伸展侧翼而将尿布穿戴在穿用者身上时,给人穿尿布者可感觉到这种“加载”拉伸力(拉伸力)。一旦尿布已被穿戴在穿用者身上,穿用者确实感觉到上述“卸载力”(回缩力)。因此,滞后损失不应大到使收缩力小至会使尿布在穿戴者身上下垂/或产生缝隙的程度。
对于本发明可伸展的复合侧翼,业已发现,最好使上述拉伸力、收缩力及最小伸长量处于确定范围内。(此处所用的短语“可伸展复合侧翼”指的是任何形状及由任何材料或几种材料的组合构成的可伸展侧翼。)使复合式可伸展侧翼开始伸展的拉伸力优选在约100克和约1200克之间,更优选的拉伸力在约200克和约1000克之间。若使该可伸展复合侧翼维持拉伸状态约5分钟,则该可伸展复合侧翼的收缩力优选的是保持在约75克和约900克之间,更优选的是在约100克和约850克之间。拉伸力和收缩力处于上述范围的复合侧翼在施加力的方向上的伸长最好至少为约0.381cm(0.15英寸)。
当可伸展侧翼30受到横向拉伸时,该侧翼还可以沿纵轴具有不同的伸长性能。此处,“不同的伸长性能”是指材料在沿走向大体垂直于拉伸方向的轴上的不同点上沿拉伸方向测得的伸长特性不均匀。对于这些可伸展材料的每一种材料,上述特性不均匀可能包括例如弹性模量或有用伸长改变,或两者均改变。可以采用很多不同方法获得不同的可伸展性能。上述可伸展侧翼30可以具有多种复合的可伸展材料,上述这些可伸展材料的多种结构,或者制成上述可伸展侧翼的不均匀的可伸展材料或其它材料的可伸展特性不同。例如通过采用具有变化的拉伸或收缩力、变化的拉伸或收缩模量、或其它内在特性的可伸展材料使选择的可伸展侧翼的相邻部分具有不同的伸展性,使可伸展侧翼30的一部分中横向伸展性能大于或小于(变化)上述相邻翼。上述可伸展材料还可以具有提供不同伸展性能的变化的长度、尺寸和形状。也可采用现有技术中公知的改变制成可伸展侧翼30的材料性质的其它方法。
最好在尿布20上还装有用于将尿布穿在穿用者身上的固定构件48。该固定构件48将第一腰区50和第二腰区52形成搭接结构,因而形成侧向闭合扣。固定构件48还使腰翼36和腿翼38都保持在拉伸状态,以使尿布20保持在穿用者身上,并提高尿布与穿用者的腿围和腰围的动态贴身性能,
上述固定构件48可以是现有技术中任一种公知的连接构件,该构件包括(但不限于)压敏粘性材料、粘结材料、机械固定构件、钩和环形固定件、或这些构件及现有技术中任何公知的连接构件的任何组合。1974年11月19日授权于Buell的美国专利3848594号以及1987年5月5日授权于Hirotsu和Robertson的美国专利4662875号都公开了一些合适的粘性带襻固定构件的例子,这两篇文献都作为本发明的参考文献。在1989年9月26日授权于Scripps的美国专利4869724号、1989年7月11日授权于Scripps的美国专利4848815号以及1993年9月7日授权于Weil,Buell,Clear和Falc-one的美国专利5242436号中公开了用于本发明的包括机械闭合构件在内的其它闭合构件的例子,上述文献的每一篇文献均作为本申请的参考文献。
如图1所示,固定构件48最好包括至少一对具有主中心线F的第一固定件40和至少一个第二固定件42。尿布20穿戴到穿用者身上时,第一固定件的主中心线F通常平行于正常作用在可伸展侧翼30上的应力方向。在尿布20处于未缩回状态时,第一固定件40的主中心线F最好与尿布20的纵向中心线L和横向中心线T两者成一角度。在一个优选实施例中,将一个第一固定件设置在与远端边缘82相邻的每个可伸展侧翼30的内表面44上。第一固定件42最好与可伸展侧翼30的远端边缘82相连,最好与腰翼36和腿翼38之间的边缘相重叠。这就可确保第一固定件40产生应力使腰翼36和腿翼38都起作用,从而可使腰、腿翼更好地随穿用者的运动伸长和缩回。(此处所用的“起作用”一词指的是把应力加在松驰状态下的伸展材料上,使该可伸展材料不再处在松驰状态,从而可随穿用者的运动伸长和缩短。)最好将第二固定件42设置在第二腰区52内的密封组件22的外表面46上,并可与第一固定件40配接。
在一个特别优选的实施例中,尿布20包括至少一个设置在各可伸展侧翼30的近端边缘80附近的近端“硬挺衬件”84。此处所用的“硬挺衬件”一词指的是尿布的任何部件,可伸展侧翼30的任何部件,或与可伸展侧翼30相连的任何其它部件,与尿布20的密封组件22相连的任何其它部件,或与可伸展侧翼和密封组件两者都相连的任何其它部件,该硬挺衬件至少在一个方向可抗皱缩/隆起。近端硬挺衬件84具有的抗皱缩/翘曲性能减小了尿布20的翘曲,最好减小沿纵向、沿第一腰区50内的密封组件22的纵向边缘56的翘曲。近端硬挺衬件84还可减少位于第一腰区50内的密封组件22的端部边缘58和腰翼件34由穿用者动态运动而引起的翻卷的可能性。于是,通过提高尿布与穿用者腰围和腿围的动态贴身性能,上述近端硬挺衬件84减小了在尿布20的腰区出现缝隙的可能并提高了多方向可伸展侧翼30的效率。
虽然可将上述近端硬挺衬件84设置在顶片24和底片26之间,还可选择地将近端硬挺衬件84设置在底片26的外表面46上、顶片24的内表面44上、或设置成为一些其它结构。可将近端硬挺衬件84制成各种不同尺寸、不同形状、不同结构,以及用不同材料制成。例如,近端硬挺衬件84可由一个或几个硬挺衬部分加工而成,并可改变近端硬挺衬件84的宽度、长度、厚度及形状。近端硬挺衬件84最好包括制成尿布的一个或几个部件的材料的一部分,上述尿布部件包括顶片24、底片26或用于可伸展侧翼30的一种或多种材料。也可将近端硬挺衬件84选择为一种处于可伸展侧翼30的近端边缘80附近的独立件。适于用作本发明的近端硬挺衬件84的材料包括纺织物絮网、无纺絮网、薄膜、成形薄膜、泡沫材料、包括膜叠层或两层或多层无纺层的无纺叠层的叠层材料、筛网、可在至少一个方向硬挺的皱折材料,以及上述任何材料或现有技术中公知的其它材料的任何组合。可采用任何公知的方式将近端硬挺衬件84连在密封组件22上。
在另一优选实施例中,尿布还另外包括一个设置在可伸展侧翼30的远端边缘82的远端硬挺件86。最好将远端硬挺件86与腰翼36和腿翼38两者相连。在这种结构中,上述远端硬挺件将施加在可伸展侧翼30的远端边缘82上的应变或力分布到整个腰翼36和腿翼38上。远端硬挺衬件86也能抗皱缩/隆起,最好使之沿可伸展侧翼30的远端边缘的纵向能抗皱缩/隆起,从而在穿用者运动时可减小可伸展侧翼30的远端边缘82隆起或折叠的可能性。于是,在一个优选实施例中,设置在可伸展侧翼30的远端边缘82附近的远端硬挺衬件86可确保尿布与穿用者恰当贴身,并使腰翼36和腿翼38随穿用者不断变化的运动适当地伸长和收缩。和近端硬挺衬件84一样,也可将远端硬挺衬件86制成各种尺寸,各种形状,各种结构,以及由各种材料制成。远端硬挺衬件86可以由一个或几个硬挺衬组成部分构成,也可以改变远端硬挺衬件86的宽度、长度、厚度和形状。在一个优选实施例中,远端硬挺衬件86包含制成可伸展侧翼30或尿布20的其它部件的料片的一部分。也可使远端硬挺衬件86选择为一种处于可伸展侧翼30的远端边缘82附近的独立件。适于制作远端硬挺衬件86的材料以及将远端硬挺衬件86连到尿布20上的方法可参考上面对近端硬挺衬件84的描述。
借助于将腰区,最好是第一腰区52置于穿用者的下腰部,将尿布20其它部分从穿用者的两条大腿之间拉出,使另一腰区最好是第二腰区50定位横过穿用者的前身,这样可将尿布20穿戴在穿用者身上。然后,穿尿布者将一个可伸展侧翼30包住穿用者体围,同时抓住设置在可伸展侧翼30的每一个上的第一固定件40之一。在该实施例中,至少将腰翼36和腿翼38的一部分连在一起,由于将可伸展侧翼30包住穿用者而产生的张力对腰翼36和腿翼38产生作用(双作用),使腰翼和腿翼随穿用者的运动伸长和收缩。(在一些腰翼件和腿翼件不连在一起的实施例中,当穿尿布者分别对分开的腰翼件和腿翼件施加应力时可产生双重作用。)然后,穿尿布者重复上述步骤使另一可伸展侧翼30固定。通过将第一固定件40与位于第二腰区52内的第二固定件42连在一起形成腰部闭合。由于形成腰部闭合,使尿布20一开始就能舒适地贴住穿用者体围。如果尿布20被穿戴得不对称,穿戴期间尿布20可以自行调整,以提高贴身性能。一旦与穿戴者贴身,在整个穿戴期间,多方向可伸展侧翼30就能随穿戴者的运动伸长和收缩,从而提高了动态贴身性能,在尿布20吸收了排泄物时也能很安全地度过。这种改进了的动态贴身性能可减小尿布20在腰区和腿区下垂和出现缝隙的可能,同时可使穿用者感到更舒适。
图11示出了本发明的一个可选择的实施例,其中有一个单一部件的可伸展侧翼。该实施例的可伸展侧翼用标号30代表。此可伸展侧翼30是一个单件可伸展料片,其中可伸展侧翼30的第一部分构成腰翼36而第二部分构成腿翼38。上述可伸展料片可以是一单层料片或者是连在一起的两层或多层料片的叠层。最好通过对上述料片进行机械加工(如打褶、起皱或环锭碾压),形成具有不同伸展性能的区域,从而使单片可伸展侧翼30具有多方向伸展特征。一种适合于对用作可伸展侧翼30的料片进行加工,使其具有多方向可伸展性能的推荐的机械加工方法在上面对类似于松紧带结构膜絮网的描述中已作了说明。另外也可采用除上面所述的机械加工之外的方法如开窄缝、切开、粘合或折叠等方法使构成可伸展侧翼30的可伸展料片具有不同弹性性能的区域,由这些方法生产的可伸展料片也可用于制作所述可伸展侧翼30。在这些实施例中,对料片进行开缝、折叠、粘合或切开均不受任何具体尺寸或形状的限制。例如,可对制成可伸展侧翼30的料片全部或部分切开、或切掉某些部分或部分粘合以在可伸展侧翼30上形成不同的可伸展能力。(此处“全部切开”是指单件可伸展侧翼30的切口或窄缝长度为从可伸展侧翼30远端边缘到近端边缘的整个距离。“部分切开”是指单片可伸展侧翼30的切口或窄缝隙的长度不足从可伸展侧翼30的近端边缘80到其远端边缘82的整个距离。)
在一个优选实施例中,腰翼36最好沿穿用者的腰围有一个主要伸展方向G,腿翼38最好有一主要伸展方向H,此方向H在横向和纵向与穿用者腿围成一角度。图11示出的单片可伸展侧翼30腰翼和腿翼之间有明显的分界线,该分界线限定了各翼片的弹性性能的开始端和终端。(图11中上述分界线用线C代表。)腰翼36和腿翼38之间的分界线可以处于可伸展侧翼的任何位置。当然对可伸展侧翼也可考虑在腰翼和腿翼之间没有明显的界线。例如,可使可伸展侧翼的结构成为具有不同弹性性能的区域部分重叠或不汇合在一条公共分界线上。
图12示出了本发明的单一部件的另一实施例,其中的单片可伸展侧翼与尿布20的密封组件22相连并被折叠,因此,可伸展料片可在遍及多方向可伸展侧翼30、腰部件34和至少尿布20的裆区54的一部分的区域上伸展。可伸展料片可在整个料片上均匀伸展或者可以有具有不同伸展特性的区域。在一个实施例中,可伸展料片沿与至少一条纵向边缘56并置的尿布20的密封组件22裆区54的至少一部分伸展。为了形成腿翼近端边缘78,可在第二腰区52内将可伸展料片折叠。从该腿翼近端边缘78可伸展料片从密封组件22朝外伸展,最好与横向和纵向成一角度。上述朝外伸展的可伸展料片构成腿翼38并在与密封组件22的纵向边缘56横向朝外隔开的一点处向内折叠。上述折叠部分最好构成可伸展侧翼30的远端边缘82,以及腰翼远端边缘74和腿翼远端边缘76。上述朝内折叠的可伸展料片从可伸展侧翼30的远端边缘82延伸至与端部边缘58相邻的第二腰区52内的密封组件22的纵向边缘56的一个位置,形成腰翼36。从腰翼近端边缘72(在该处腰翼36与密封组件22相连)可伸展料片横向伸展横过尿布20的端部边缘58附近的第一腰区50。同一件可伸展料片还从密封件22的另一个纵向边缘56横向朝外伸展,并如上所述地折叠,从而形成对置的可伸展侧翼30的腰翼36和腿翼38,以及密封组件22的裆区54的至少一部分。
还可考虑其它一些可供选择的实施例,其中可伸展料片的单一部分沿尿布20的多组件伸展。在一个优选的可选择的实施例中,为了只形成腰翼36和腿翼38,将可伸展料片的单一部分折叠。在这种结构中,通过将可伸展料片折叠可构成腰翼远端边缘74和腿翼远端边缘76。腰翼36和腿翼38从上述折叠处(可伸展侧翼的远端边缘82)延伸到密封组件22。因而将单一部分的可伸展料片加入到尿布各部件中的优点是可减少必须分开构成且与密封组件相连的一些独立的弹性组成部件的数目。
虽然上面已对本发明的一些特定实施例结合图示进行了描述,但是,显然在不超出本发明的构思和范围的前提下本领域的普通技术人员可作出各种其它改变和变型。因此在本发明范围内的所有这些改变和改型都应被本发明的权利要求书所覆盖。
Claims (27)
1.一种具有一条纵向中心线、一条横向中心线、一个第一腰区和一个第二腰区的吸湿用品,该吸湿用品包括:
a)一个具有一对纵向边缘的密封组件,所述密封组件包括一个吸收芯;
b)一个沿所述第一腰区内的密封组件的各条纵向边缘设置的可伸展侧翼,该可伸展侧翼从上述纵向边缘朝外横向伸出,所述各侧翼有一个邻近所述密封组件纵向边缘的近端边缘和与所述近端边缘横向朝外隔开的一个远端边缘,所述各侧翼包括一个腰翼和一个腿翼,所述腰翼位于腿翼纵向外侧,所述腰翼具有朝向横向中心线的方向偏斜的第一主伸展方向,所述腿翼具有背离横向中心线的方向偏斜的第二主伸展方向,而且腰翼和腿翼的第一与第二主伸展方向不平行。
2.如权利要求1所述的吸湿用品,其中所述腰翼和腿翼是单一部件。
3.如权利要求2所述的吸湿用品,其中所述单一部件可伸展侧翼至少部分地在所述近端边缘和所述远端边缘之间从所述远端边缘向所述近端边缘切开。
4.如权利要求1所述的吸湿用品,其中所述各可伸展侧翼包括一个位于所述腰翼和腿翼之间的从所述远端边缘延伸到所述密封组件的折叠。
5.如权利要求4所述的吸湿用品,其中所述折叠形成所述可伸展侧翼远端边缘的至少一部分。
6.如权利要求1所述的吸湿用品,其中至少所述各可伸展侧翼的一部分是所述密封组件的至少一个部件的延伸。
7.如权利要求1所述的吸湿用品,还包括一个与邻近所述密封组件纵向边缘的各可伸展侧翼的所述近端边缘的至少一部分相连的近端硬挺衬件。
8.如权利要求1或7所述的吸湿用品,还包括与所述各侧翼远端边缘的至少一部分相连的远端硬挺衬件。
9.如权利要求1所述的吸湿用品,其中所述各可伸展侧翼包括一种类似于松紧带的结构膜絮网。
10.如权利要求1所述的吸湿用品,其中所述腰翼和腿翼包括不同材料。
11.如权利要求1所述的吸湿用品,其中所述腰翼和腿翼具有不同的伸展特性。
12.如权利要求1所述的吸湿用品,其中所述密封组件还包括一个透液顶片和一个与所述顶片相连的不透液体的底片,所述可伸展侧翼是多组件的可伸展侧翼,
该腰翼包括一个具有所述第一主伸展方向的腰翼件,一条邻近所述密封组件纵向边缘的腰翼近端边缘,以及一条与所述近端边缘横向相对的腰翼远端边缘;
该腿翼包括一个具有所述第二主伸展方向的腿翼件、一条邻近所述密封组件纵向边缘的腿翼近端边缘以及一条与所述近端边缘沿横向相对的腿翼远端边缘,所述腿翼件是与所述腰翼件分开的部件。
13.如权利要求12所述的吸湿用品,其中所述腰翼远端边缘的至少一部分与所述腿翼远端边缘的至少一部分相连。
14.如权利要求12所述的吸湿用品,还包括一个与邻近所述密封组件的纵向边缘的各可伸展侧翼的所述近端边缘的至少一部分相连的近端硬挺衬件。
15.如权利要求12或14所述的吸湿用品,还包括一个与所述各可伸展侧翼的远端边缘的至少一部分相连的远端硬挺衬件。
16.如权利要求12所述的吸湿用品,还包括与所述各可伸展侧翼相连的一对固定件,所述固定件之一邻近腰翼远端边缘设置,而另一固定件邻近腿翼远端边缘设置,使腰翼和腿翼分开固定。
17.如权利要求12所述的吸湿用品,其中所述各可伸展侧翼包括一种类似于松紧带的结构膜絮网。
18.如权利要求12所述的吸湿用品,其中所述腰翼件和腿翼件包括不同材料。
19.如权利要求12所述的吸湿用品,其中所述腰翼和腿翼具有不同的伸展特性。
20.如权利要求12所述的吸湿用品,其中
所述腰翼包括一条在所述腰翼近端边缘和腰翼远端边缘之间伸展的腰翼第一横向边缘以及一条沿纵向与所述腰翼第一横向边缘相对的腰翼第二横向边缘;所述第一主伸展方向有一个方向为横向朝外、大小大于零的第一矢量分量和一个方向朝向横向中心线的大小大于零的第二矢量分量;所述腰翼第一横向边缘构成所述尿布端部边缘的一部分;
所述腿翼包括一条在所述腿翼近端边缘和腿翼远端边缘之间延伸的腿翼第一横向边缘以及一条沿纵向与所述腿翼第一横向边缘相对的腿翼第二横向边缘,所述第二主伸展方向具有一个方向横向朝外、大小大于零的第一矢量分量和一个方向为背离横向中心线的大小大于零第二矢量分量,所述腿翼第二横向边缘构成尿布的包围穿用者腿部的部分;
所述侧翼还包括一个邻近所述可伸展侧翼远端边缘设置的第一固定件,使所述第一固定件既与腰翼相连又与腿翼相连。
21.如权利要求20所述的吸湿用品,其中至少腰翼远端边缘的一部分与所述腿翼远端边缘的至少一部分相连。
22.如权利要求20所述的吸湿用品,还包括一个与邻近所述密封组件纵向边缘的各可伸展侧翼的近端边缘的至少一部分相连的近端硬挺衬件。
23.如权利要求22所述的吸湿用品,还包括一个与所述各可伸展侧翼的远端边缘的至少一部分相连的远端硬挺衬件。
24.如权利要求23所述的吸湿用品,其中所述第一固定件邻近所述各可伸展侧翼的远端边缘设置,所述第一固定件具有与横向方向形成角度的主中心线。
25.如权利要求20所述的吸湿用品,其中所述各可伸展侧翼包括一种类似于松紧带的结构膜絮网。
26.如权利要求20所述的吸湿用品,其中所述腰翼件和腿翼件包括不同材料。
27.如权利要求20所述的吸湿用品,其中所述腰翼和腿翼具有不同的伸展特性。
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US4861652A (en) * | 1987-10-13 | 1989-08-29 | Kimberly-Clark Corporation | Diaper article with elasticized waist panel |
US4857067A (en) * | 1987-12-04 | 1989-08-15 | Minnesota Mining And Manufacturing Company | Disposable diaper having shirred ears |
US4938757A (en) * | 1987-12-16 | 1990-07-03 | Kimberly-Clark Corporation | Disposable training pant or incontinence garment |
US4940464A (en) * | 1987-12-16 | 1990-07-10 | Kimberly-Clark Corporation | Disposable incontinence garment or training pant |
US4932950A (en) * | 1988-05-31 | 1990-06-12 | Weyerhaeuser Company | Self-adjusting suspension system for perineal shield |
CA1303297C (en) * | 1988-07-29 | 1992-06-16 | David Norbert Schreiner | Garment with hook-and-loop fasteners and sheath or pocket therefor |
US4911702A (en) * | 1988-08-09 | 1990-03-27 | Weyerhaeuser Company | Attachment means and incontinent garment incorporating same |
EP0417766B1 (en) * | 1989-09-13 | 1994-04-06 | Uni-Charm Corporation | Method for manufacturing disposable garments |
JPH0759243B2 (ja) * | 1989-12-18 | 1995-06-28 | ユニ・チャーム株式会社 | 使い捨て着用物品 |
JP2664501B2 (ja) * | 1989-12-22 | 1997-10-15 | ユニ・チャーム株式会社 | 使い捨て着用物品 |
MY106077A (en) * | 1990-05-09 | 1995-03-31 | Kao Corp | Disposable diapers. |
FR2668364B1 (fr) * | 1990-10-26 | 1997-11-28 | Peaudouce | Couche-culotte a elements elastiques d'entrejambes et de ceinture, et procede et installation pour la fabrication en continu de telles couches-culottes. |
MY109047A (en) * | 1990-10-31 | 1996-11-30 | Kao Corp | Disposable diaper |
US5167897A (en) * | 1991-02-28 | 1992-12-01 | The Procter & Gamble Company | Method for incrementally stretching a zero strain stretch laminate web to impart elasticity thereto |
US5151092A (en) * | 1991-06-13 | 1992-09-29 | The Procter & Gamble Company | Absorbent article with dynamic elastic waist feature having a predisposed resilient flexural hinge |
US5143679A (en) * | 1991-02-28 | 1992-09-01 | The Procter & Gamble Company | Method for sequentially stretching zero strain stretch laminate web to impart elasticity thereto without rupturing the web |
KR100215377B1 (ko) * | 1991-06-13 | 1999-08-16 | 데이비드 엠 모이어 | 동적인탄성허리밴드적합성을제공하는고정시스템을갖는흡수제품 |
US5196000A (en) * | 1991-06-13 | 1993-03-23 | The Proctor & Gamble Company | Absorbent article with dynamic elastic waist feature comprising an expansive tummy panel |
US5246433A (en) * | 1991-11-21 | 1993-09-21 | The Procter & Gamble Company | Elasticized disposable training pant and method of making the same |
US5368584A (en) * | 1992-09-25 | 1994-11-29 | The Procter & Gamble Company | Absorbent article with dynamic elastic leg feature comprising elasticized thigh panels |
US5383871A (en) * | 1993-06-03 | 1995-01-24 | The Procter & Gamble Company | Absorbent articles having a closure system providing sustained dynamic fit |
US5358500A (en) * | 1993-06-03 | 1994-10-25 | The Procter & Gamble Company | Absorbent articles providing sustained dynamic fit |
SG72621A1 (en) * | 1993-11-19 | 2000-05-23 | Procter & Gamble | Absorbent article with multi-directional extensible side panels |
US5554145A (en) * | 1994-02-28 | 1996-09-10 | The Procter & Gamble Company | Absorbent article with multiple zone structural elastic-like film web extensible waist feature |
JP3162592B2 (ja) * | 1995-01-11 | 2001-05-08 | ザ、プロクター、エンド、ギャンブル、カンパニー | 使い捨ておむつ |
JP2868706B2 (ja) * | 1995-03-22 | 1999-03-10 | ザ、プロクター、エンド、ギャンブル、カンパニー | 使い捨ておむつ |
WO1996035402A1 (en) * | 1995-05-12 | 1996-11-14 | The Procter & Gamble Company | Disposable pull-on absorbent article with multi-directional extensible side panels |
-
1994
- 1994-11-18 SG SG1996002896A patent/SG72621A1/en unknown
- 1994-11-18 DE DE69417057T patent/DE69417057T2/de not_active Expired - Lifetime
- 1994-11-18 AU AU11003/95A patent/AU1100395A/en not_active Abandoned
- 1994-11-18 BR BR9408105A patent/BR9408105A/pt not_active IP Right Cessation
- 1994-11-18 CN CN94194747A patent/CN1130182C/zh not_active Expired - Fee Related
- 1994-11-18 DK DK95901953T patent/DK0729332T3/da active
- 1994-11-18 NZ NZ276647A patent/NZ276647A/en unknown
- 1994-11-18 CA CA002176700A patent/CA2176700C/en not_active Expired - Fee Related
- 1994-11-18 AT AT95901953T patent/ATE177312T1/de not_active IP Right Cessation
- 1994-11-18 KR KR1019960702640A patent/KR100353701B1/ko not_active IP Right Cessation
- 1994-11-18 CZ CZ19961455A patent/CZ286283B6/cs not_active IP Right Cessation
- 1994-11-18 EP EP95901953A patent/EP0729332B1/en not_active Expired - Lifetime
- 1994-11-18 WO PCT/US1994/013409 patent/WO1995013775A1/en active IP Right Grant
- 1994-11-18 JP JP51465295A patent/JP3414741B2/ja not_active Expired - Fee Related
- 1994-11-18 HU HU9601336A patent/HU220956B1/hu not_active IP Right Cessation
- 1994-11-18 ES ES95901953T patent/ES2128699T3/es not_active Expired - Lifetime
- 1994-11-19 MY MYPI94003093A patent/MY113829A/en unknown
- 1994-11-21 PE PE1994255230A patent/PE39895A1/es not_active Application Discontinuation
-
1995
- 1995-02-09 TW TW084101139A patent/TW309420B/zh active
-
1996
- 1996-05-15 NO NO961990A patent/NO961990L/no unknown
- 1996-05-17 FI FI962108A patent/FI962108A/fi not_active IP Right Cessation
-
1997
- 1997-08-20 US US08/915,471 patent/US6004306A/en not_active Expired - Lifetime
-
1998
- 1998-12-21 HK HK98114381A patent/HK1012942A1/xx not_active IP Right Cessation
-
1999
- 1999-03-11 GR GR990400554T patent/GR3029650T3/el unknown
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GB2080093A (en) * | 1980-07-25 | 1982-02-03 | Moelnlycke Ab | Disposable diaper |
US4585447A (en) * | 1985-04-15 | 1986-04-29 | Colgate-Palmolive Company | Disposable diaper with intersecting stressed crotch and waist seals |
US4998929A (en) * | 1986-07-17 | 1991-03-12 | Molnlycke Ab | Disposable diaper |
US4938753A (en) * | 1987-12-16 | 1990-07-03 | Kimberly-Clark Corporation | Seam construction in a disposable training pant, incontinence garment, or diaper |
EP0547497A2 (en) * | 1991-12-18 | 1993-06-23 | Kimberly-Clark Corporation | Disposable three dimensional garment and method of making same |
Also Published As
Publication number | Publication date |
---|---|
SG72621A1 (en) | 2000-05-23 |
CZ145596A3 (en) | 1996-10-16 |
NO961990D0 (no) | 1996-05-15 |
CA2176700C (en) | 2001-01-02 |
AU1100395A (en) | 1995-06-06 |
DE69417057T2 (de) | 1999-07-15 |
MY113829A (en) | 2002-06-29 |
DE69417057D1 (de) | 1999-04-15 |
US6004306A (en) | 1999-12-21 |
HUT76577A (en) | 1997-09-29 |
CA2176700A1 (en) | 1995-05-26 |
JPH09505227A (ja) | 1997-05-27 |
EP0729332A1 (en) | 1996-09-04 |
KR960705526A (ko) | 1996-11-08 |
DK0729332T3 (da) | 1999-09-27 |
JP3414741B2 (ja) | 2003-06-09 |
FI962108A (fi) | 1996-07-16 |
NO961990L (no) | 1996-07-17 |
HK1012942A1 (en) | 1999-08-13 |
WO1995013775A1 (en) | 1995-05-26 |
FI962108A0 (fi) | 1996-05-17 |
EP0729332B1 (en) | 1999-03-10 |
CZ286283B6 (cs) | 2000-03-15 |
ES2128699T3 (es) | 1999-05-16 |
TW309420B (zh) | 1997-07-01 |
GR3029650T3 (en) | 1999-06-30 |
HU9601336D0 (en) | 1996-07-29 |
PE39895A1 (es) | 1995-12-13 |
NZ276647A (en) | 1998-05-27 |
HU220956B1 (hu) | 2002-07-29 |
KR100353701B1 (ko) | 2003-10-04 |
BR9408105A (pt) | 1997-08-05 |
CN1140985A (zh) | 1997-01-22 |
ATE177312T1 (de) | 1999-03-15 |
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