CN101641066A - 具有可展开的底座耳部和拉伸腰带的尿布 - Google Patents
具有可展开的底座耳部和拉伸腰带的尿布 Download PDFInfo
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- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
- A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
- A61F13/5633—Supporting or fastening means specially adapted for diapers or the like open type diaper
Abstract
本发明公开了一次性尿布,所述一次性尿布包括底座和吸收组件。底座包括由底座的横向向内折叠的部分形成的横向相对侧翼和由底座的其它横向向内折叠的部分形成的可展开的底座耳部。每个底座耳部一直保持横向向内折叠,直到被释放并横向向外展开以致横向向外超出相邻的侧翼。可弹性延展的拉伸腰带覆盖横向相对的底座耳部的各个部分,并且在它们之间的整个腰区上横向延伸。
Description
发明领域
本发明涉及一次性吸收制品,如一次性尿布和其它旨在用于失禁患者的制品。
发明背景
一次性吸收制品设计用来吸收和容纳身体排泄物,以便防止其污染穿着者的身体和衣物以及被褥或其它与穿着者接触的物体。
随着一次性吸收制品的使用日益增多,它们的复杂性也随着旨在增强其性能和外观的附加特性的添加而增加。随着复杂性的增加,材料成本和生产过程的成本也随之增加。因此,这些制品的销售价格已经上涨到世界各地的很多潜在购买者负担不起的水平。因此,需要一种简易的一次性吸收制品。
发明内容
一次性尿布包括底座和吸收组件。底座包括由底座的横向向内折叠的部分形成的横向相对侧翼和由底座的其它横向向内折叠的部分形成的可展开的底座耳部。每个底座耳部一直保持横向向内折叠,直到被释放并横向向外展开以致横向向外突出超过相邻的侧翼。扣紧元件可设置在至少两个底座耳部上,所述扣紧元件适于将前腰区扣紧到后腰区上以环绕穿着者的腰部和腿部。可弹性延展的拉伸腰带覆盖在横向相对的底座耳部的一部分上并且跨越它们之间的腰区横向伸展。吸收组件可以十字形图案连接到底座上,以使位于吸收组件下面且位于十字形连接图案以外的底座部分能够横向伸展。
附图概述
在附图中,类似的附图标号标识结构上对应的元件,所述元件在所描绘的几个示例性实施方案中可相同或不同。为了更清楚地显示其它元件,某些附图可能已经通过省略选择的元件进行了简化。在任何示例性实施方案中,除了在各自的文字说明书中明确描述之外,某些附图中元件的此类省略并不一定表示特定元件的存在或不存在。
在附图和文字说明书中,附图标号之后的小写字母通常代表对称的元件,例如,左右对称元件可分别用参考数字1a和1b识别。没有附加小写字母的附图标号表示该具体参考数字所应用的所有元件,例如,相同的元件作为一组可被标记为1。
图1为呈尿布20形式的一种示例性一次性吸收制品的平面图,所述一次性吸收制品显示为平展未收缩状态,即没有由弹性构件引起的收缩。在此图中,向内朝向穿着者并接触穿着者的尿布20的内部面对观察者显示。
图2为另一个示例性尿布20的平面图,其中向内朝向穿着者的尿布20的内部面对观察者显示。
图3是沿剖面线3-3截取的图1和2的尿布20的截面图。
图4是沿剖面线4-4截取的图1和2的尿布20的截面图。
图5是具有两个横向延伸的底座耳部的示例性尿布20的平面图。在此图中,尿布20的内部面对观察者显示。
图6是图5的尿布20的平面图,其中尿布20的外部面对观察者显示。
图7是沿剖面线7-7截取的图5和6的尿布20的截面图。
图8是沿剖面线8-8截取的图5和6的尿布20的截面图。
图9是沿剖面线9-9截取的图5和6的尿布20的截面图。
图10是示例性尿布20的透视图,它以其松驰收缩状态显示,即,具有由弹性构件引起的收缩。在此图中,尿布20的内部朝上显示。
图11是另一个示例性尿布20的平面图,其显示了一种供选择替代形式的扣件。
图12是图11的尿布20的平面图,其中尿布20的外部面对观察者显示。
图13是沿剖面线13-13截取的图11和12的尿布20的截面图。
图14是沿剖面线14-14截取的图11和12的尿布20的截面图。
图15是沿类似于13-13的剖面线截取的另一个示例性尿布20的截面图,并且显示了一种供选择替代形式的扣件。
图16是沿剖面线16-16截取的图11和12的尿布20的截面图。
图17是成形材料纤维网的示例性片断的平面图。
图18是示例性尿布20的简化平面图,它以其平展未收缩状态显示,即没有由弹性构件引起的收缩,其中吸收组件以十字形连接图案连接到底座上。在此图中,尿布20的外部面对观察者显示。
图19是示例性吸收组件200的平面图。在此图中,显示吸收组件200与在示例性尿布20中其所连接到的底座100分离,并且向内朝向穿着者并接触穿着者的吸收组件200的内部面对观察者显示。
图20是沿剖面线20-20截取的图19的吸收组件200的截面图。
图21是沿剖面线21-21截取的图19的吸收组件200的截面图。
图22是沿类似于20-20的剖面线截取的另一个示例性吸收组件200的截面图。
图23是示例性吸收芯250的截面图。
图24是具有四个横向伸展的底座耳部的另一个示例性尿布20的平面图。在此图中,尿布20的内部面对观察者显示。
图25是层压拉伸腰带的截面图。
图26是处于拉伸状态的图25的层压拉伸腰带的视图。
发明详述
在本说明书中,下列术语具有下列含义:
术语“吸收制品”是指吸收和容纳液体的装置,更具体地讲是指与穿着者的身体紧贴或邻近放置、用于吸收和容纳由身体排放的各种流出物的装置。
术语“尿布”是指通常被婴儿和失禁者围绕下体穿着以便环绕穿着者的腰部和腿部并且具体地讲适于接收和容纳尿液和粪便的一种吸收制品。
术语“一次性的”是指通常不打算洗涤、复原或作为吸收制品再使用的吸收制品的性质,即,预期将它们使用一次后丢弃,并且优选地将其回收利用、堆肥处理或以其它环境相容的方式处理。在本说明书中,将一次性尿布描述为代表示例性的一次性吸收制品。
术语“展开”的所有形式均是指将任何已公开的可展开的结构元件从其初始构型操纵至使其可在设置有该元件的制品中用于其预期用途的构型。
术语“纵向”是指从制品的一个腰部边缘向相对腰部边缘延伸并且大致平行于制品的最大线性尺寸的方向。
术语“横向”是指从制品的侧边向相对侧边延伸的方向并且大致与纵向成直角。
术语“环向”是指大致平行于横向的、环绕穿着者腰部的一部分或全部的方向。该术语尤其用于当描述围绕腰部开口延伸并形成其边缘的元件时。
术语“设置”是指元件被连接和定位在特定地点或位置使其与其它元件形成一体结构。
术语“连接”是指用适用于将元件连接到一起以及适用于它们的组分材料的任何方法通过扣紧、粘附、粘结等方式来连接或结合元件。用于将元件连接到一起的许多合适方法是熟知的,这些方法包括粘合剂粘合、压力粘合、热粘结、机械扣紧,等等。此类连接方法可用于在一个特定区域上连续地或间断地将各元件连接到一起。除非另外指明,所述被相互连接的元件为直接连接到一起的,其间或者一无所有或者仅有粘结材料例如粘合剂。除非另外指明,所述被相互连接的元件为永久连接到一起的,即,以如下方式连接:如果要分离它们,则元件之一或两者和/或所存在的任何粘结材料必然受损。此永久性连接不包括暂时连接,诸如通过可解开的扣件。
术语“层压体”是指以层状排列连接到一起的元件。
术语“内粘性”是指一种材料一旦固结便会自身粘附但不会在很大程度上粘附到其它材料上的特性。
术语“水可渗透的”和“水不可渗透的”是指在一次性吸收制品的拟定用途的上下文中材料的渗透性。具体地讲,术语“水可渗透的”是指具有孔、开口和/或互联的空隙空间的层或层状结构,所述层和/或层状结构允许液体水无需施加压力即可通过其厚度。反之,术语“水不可渗透的”指在没有加压的情况下液体水不能通过其厚度的层或层状结构。根据本定义,水不可透过的层或层状结构可透过水蒸汽,即可为“水蒸汽可透过的”。此类水蒸汽可透过的层或层状结构在本领域中通常被称为“可透气的”。如本领域所熟知的那样,测量典型地用于吸收制品的材料对水的渗透性的常用方法为静水压力试验,也称为静水头试验或简称为“水头”试验。熟知的适用于水头试验的合适法定方法由INDA(以前为“国际非织造材料和一次性制品协会”(International Nonwovens and Disposables Association),现在为“非织造织物行业协会”(The Association of the Nonwoven Fabrics Industry))和EDANA(欧洲一次性制品和非制造材料协会(European Disposables AndNonwovens Association))批准。
术语“近侧”和“远侧”分别是指元件的位置相对靠近或远离结构中心。例如,纵向延伸元件的横向近侧边缘距纵向轴线的位置比同一元件的横向远侧边缘相对于同一纵向轴线的位置更近。当用于描述关于轴线的相对位置时,同义词分别包括“内侧”和“外侧”。
术语“内侧”和“外侧”分别是指当一个吸收制品被穿带时用来背向或面向穿着者身体放置的元件的位置,以及用来背向或面向穿带在吸收制品上面的任何衣物放置的元件的位置。“内部”和“外部”的同义词分别包括“里面”和“外面”,以及“内侧”和“外侧”。同样,当定位吸收制品使得其内面朝上时,例如将其展开以准备使穿着者位于其上时,同义词分别包括“上面”和“下面”、“上方”和“下方”、以及“顶部”和“底部”。
术语“非织造材料”是指通过由机械方法、热方法、或化学方法粘结或缠结纤维而制成的定向或无规取向纤维的薄片、纤维网或毛层。非织造材料不包括纸张和织造、编织、簇成、或通过湿磨法毡制的产品。这些纤维优选地但未必为人造合成物。
术语“拉伸腰带”是指如下的结构组件:当尿布在环向上扩展时,即,当尿布的腰区被横向扩展时,所述组件可通过围绕尿布的腰部开口提供收缩力来阻抗伸长。
如在附图中所看到,将示例性尿布20的一个端部构造为前腰区36,将纵向相对的端部构造为后腰区38,并且将中间部分构造为裆区37。
尿布20的基本结构包括底座100,其具有横向延伸的前边缘136、纵向相对的后边缘138、横向相对的侧边137、内表面102和外表面104。纵向轴线42延伸穿过前边缘136与后边缘138的中点,而横向轴线44延伸穿过侧边137的中点。图1所示的示例性底座100另外还具有纵向延伸并横向相对的侧翼147以及横向相对的底座耳部106和/或108,其在下面有更详细的描述。
尿布20的基本结构还包括连接到底座100上的吸收组件200。吸收组件200吸收和容纳液体身体排泄物。吸收组件200具有横向延伸的前边缘236、纵向相对的后边缘238、横向相对的侧边237、内表面202以及外表面204。吸收组件200可相对于纵向轴线42和横向轴线44中的任何一个或两者对称地设置或不对称地设置。例如,图1所示的吸收组件200相对于纵向轴线42对称设置,并且相对于横向轴线44不对称地朝前腰区36偏移。
吸收组件200的边缘可位于底座100的各自边缘内侧,如图1所示的示例性尿布20中那样。其中吸收组件200的一个或多个边缘位于底座100各自的边缘内侧这种构型可能是可取的。例如,为了使邻近底座各边缘的相对更柔韧的层能够适形穿着者的身体并从而形成贴靠穿着者皮肤的有效箍状密封,同时不受相对较厚且相对较不柔韧的吸收组件的拘束。作为另外一种选择,吸收组件200的一个或多个边缘可与底座100的各自边缘重合。
当尿布20被穿着在穿着者的下体上时,前腰边缘136和后腰边缘138环绕穿着者的腰部,而同时底座侧边137环绕穿着者的腿部。裆区37通常位于穿着者腿部之间,并且吸收组件200从前腰区36通过裆区37延伸至后腰区38。
尿布20的基本结构也包括至少一个在腰区中连接到底座100上的拉伸腰带。当底座100在环向上被拉伸时,拉伸腰带通过围绕尿布20的腰部开口提供收缩力来阻抗伸长。例如,在图1中,后内拉伸腰带390被显示为在尿布20的后腰区38中连接到底座100的内侧上。该后拉伸腰带390具有横向延伸的纵向远侧边缘391和纵向相对横向延伸的近侧边缘392。
底座100包括水不可渗透的底片26。底片26形成旨在朝向在尿布20外穿着的任何衣服放置的外表面。许多适于用作底片26的材料已为人们所熟知,包括聚丙烯和其它聚烯烃的薄膜。多层式底片,例如薄膜和非织造材料的层压体,也已为人们所熟知并适于用作底片26。如图16所示,这种层压底片可被取向成使非织造材料31设置在外侧,以使最外层的感觉和外观比使用薄膜30作为最外层所能提供的相比更呈布状。
底座100可以但不一定另外包括连接到底片26上的内衬22。这种内衬22优选地由不刺激穿着者皮肤的柔软材料制成。内衬22的很多适用材料是本领域熟知的,包括人造丝和合成非织造材料诸如纺粘或梳理成网的聚丙烯、聚乙烯或聚酯。内衬22可形成底座100的内表面102的一部分,例如在吸收组件200的边缘236和238之间以及底座100的腰部边缘136和138之间的各自的前后横向中心部分117和118中形成,从而可如所期望的那样用来将穿着者的皮肤与底片26的一部分隔离,例如当尿布20在皮肤与底片薄膜之间的接触可能让人感觉不舒适的情况下穿着时。
如图所示,示例性底座100具有纵向延伸并横向相对的侧翼147,所述侧翼设置在向内朝向穿着者并接触穿着者的尿布20内部上。侧翼147通过横向向内,也就是说,朝向纵向轴线42来折叠部分底座100形成,以便既形成底座100的各自侧翼147又形成侧边137,如图所示。每个侧翼147均具有近侧边缘157。
在图1所示的示例性尿布20中,侧翼147交叠吸收组件200,即,它们的近侧边缘157横向地位于吸收组件200的各自侧边237的内侧。为了使尿布20比非交叠构型具有更接近于成品的外形,这种交叠构型可能是可取的。作为另外一种选择,侧翼147可不与吸收组件200交叠。
每个侧翼147在前腰区36中的连接区153和后腰区38中的纵向相对的连接区154中连接到底座100的内表面102上,如图9所详细显示。在吸收组件200的前边缘236或后边缘238与底座100的各自前腰边缘136或后腰边缘138重合并且侧翼147与吸收组件200交叠的实施方案中,代替被连接到底座100的内表面102上或除此之外,可将侧翼147连接到吸收组件200上。
在这些连接区之间,每个侧翼147的近侧边缘157保持自由,即,未连接到底座100的内表面102或吸收组件200上。同样在连接区之间,弹性股线167连接在邻近每个侧翼147的近侧边缘157处。每个弹性股线167被包封在邻近每个侧翼147的近侧边缘157所形成的褶痕170内。当被拉伸时,弹性股线167使相邻的侧翼边缘能够伸展至底座的平展未收缩长度。当被允许松弛时,弹性股线167收缩并收拢近侧边缘157,从而将侧翼147提升至用作邻近吸收组件200的侧边237的侧部屏障的位置,如图8和图10所示。
可在底座100被折叠以形成侧翼147之处连接另一个弹性股线168,如图5和图8所示。在被允许松弛时,该弹性股线168可收拢底座100的侧边137以在侧边137处或邻近侧边137形成侧部屏障。
在成品尿布中,优选的是底座具有非平直的而是有切口的侧边137,从而使尿布20在平面图中具有“T”或“I”的总体形状。这种非矩形构型可使尿布20在其穿着时具有合体的外观并且也可给人以尿布20将在穿着者腿部之间舒适贴合的感觉。
底座的一种示例性非矩形构型示于图5和图6。如这些图所示,后腰区138中底座100的横向相对部分108可横向向外延伸,同时相邻的侧翼147保持横向向内折叠。横向向外延伸的部分108形成一对后底座“耳部”,所述耳部使尿布具有“T”形。作为另外一种选择,前腰区136中的底座100的横向相对部分可横向向外延伸以形成一对前底座耳部,从而使尿布具有“T”形。作为另外一种选择,前部和后部均可横向向外延伸以形成一对前底座耳部106和一对后底座耳部108,而相邻的侧翼147保持横向向内折叠,其中向尿布20赋予“I”形状的构型,如图24所示。
为了易于制造和包装,优选的是底座耳部106和/或108保持横向向内折叠,直到当将尿布20应用于穿着者身体上时使用者想要展开他们以便使用。为此,如图1所示,每个底座耳部的一个边缘可由易断的连接线91来限定,沿着这条线底座耳部可部分分离以便展开,也就是说,用于横向向外展开。这种易断连接线可通过如下方法在层中或层的层压体中形成:通过穿孔;通过形成受力时该处的材料将优先破裂的脆性区;通过形成受力时该处的材料将优先撕裂的较弱区;通过形成受力和/或弯曲时该处的材料将优先粉碎的易碎区;或者通过提供适于所涉及材料的易碎性的任何其它方法。
作为另外一种选择,如图2所示,每个底座耳部的一个边缘可由切割线92界定,在切割线处底座耳部从相邻的侧翼147上切断。因为此切割线的形成可能会使底座耳部过早地展开,所以底座耳部可通过可释放的连接构件94保持横向向内折叠,直到被释放并横向向外展开以致横向向外突出超过相邻的侧翼。如图4所示,可释放的连接构件94可包括设置在底座耳部上的可释放连接元件95和当底座耳部横向向内折叠时设置在底座耳部下的内表面上的补充性可释放连接元件96。作为另外一种选择,设置在底座耳部或下面的内表面上的单一连接构件能够可释放地接合另一表面的材料,从而使得不同的补充性连接构件没有必要,例如吊钩构件能够可释放地接合非织造材料。如果期望进一步确保底座耳部不会过早无意间展开,那么这种可释放的连接构件94也可与由易断连接线91限定的底座耳部联合使用。
如各图所示,每个拉伸腰带均具有邻近底座100的各自的腰部边缘设置的环向延伸的纵向远侧边缘和纵向相对环向延伸的纵向近侧边缘,所述纵向近侧边缘的设置与拉伸腰带的纵向远侧边缘的设置相比相对更靠近横向轴线44。每个拉伸腰带也具有横向相对纵向延伸的侧边、内表面和外表面。
例如,图5所示的后内拉伸腰带390具有环向延伸的纵向远侧边缘391、纵向相对环向延伸的纵向近侧边缘392和横向相对纵向延伸的侧边393。该后内拉伸腰带390的内表面394和外表面395在图7中识别。同样,图6所示的后外拉伸腰带380具有纵向远侧边缘381、纵向相对的近侧边缘382、横向相对的侧边383、内表面384和外表面385。又如,图24所示的前内拉伸腰带370具有纵向远侧边缘371、纵向相对的近侧边缘372和横向相对的侧边373。
如图所示的各拉伸腰带具有环向尺寸,使得它们覆盖在各成对的底座耳部的一部分上并且在它们之间连续延伸。例如,图5所示的后内拉伸腰带390覆盖在每个后底座耳部108的大部分上,并且跨越这些底座耳部108之间的后腰区38延伸。具体地讲,该后内腰带108的侧边393位于底座耳部108的褶边170附近和横向内侧。
在一些实施方案中,拉伸腰带可具有比图中所示的拉伸腰带相对更大或更小的环向尺寸。例如,拉伸腰带的侧边可位于设置在底座耳部上的任何扣件的横向内侧,如图5所示的扣件120。又如,拉伸腰带的侧边可比如图所示的位置相对更远,使得拉伸腰带基本上覆盖在底座耳部的整个横向尺寸上。
当尿布20被穿着时,每个内拉伸腰带的内表面均接触穿着者的皮肤。因此,形成内表面的层优选地由不会刺激穿着者皮肤的柔软材料制成。许多合适的材料是本领域已知的,包括尼龙和合成非织造材料,如纺粘或梳理成网的聚丙烯、聚乙烯或聚酯或其它烯属材料。
拉伸腰带可具有层压结构。具体地讲,拉伸腰带可包括一个内层和设置在内层外部的一个或多个附加层。对于这些层中的任何一个,均可使用前述合适材料之一的弹性型式,例如显示具有基本弹性性能的非织造材料。例如,具有层压结构的前内拉伸腰带370示于图25。该拉伸腰带包括内皮肤接触层82和层压到内层82上的弹性层83。用于弹性层83的合适材料是本领域熟知的,包括天然橡胶股线、合成橡胶股线、弹性体薄膜等。为弹性层83所选的材料优选地表现出与其伸长成比例的力响应。如图25所示,拉伸腰带也可包括在弹性层83的内层82对面的表面上层压到其上的外覆盖层84,从而形成三层层压材料,其中弹性层83夹在内层82和外覆盖层84之间。
拉伸腰带的各层可通过适于被连接到一起的元件和它们的组分材料的任何方法来层压。例如,当被连接到松弛的内层82(和松弛的外覆盖层84,如果存在的话)上时,弹性层83可保持在拉伸状态,并且随后可允许其松弛。所得弹性层83的收缩以能产生皱曲的方式聚缩内层82,这样形成的层压体可在初始拉伸方向上延伸最大至内层82(和外覆盖层84,如果存在的话)的初始尺寸,其中仅有弹性层83阻抗延伸。类似的结果可通过如下方式获得:例如,首先聚缩内层82(和外覆盖层84,如果存在的话),诸如通过褶绉它来聚缩,然后连接处于松弛状态的弹性层83。所得层压体可在垂直于褶绉脊的方向上延伸直到内层82(和外覆盖层84,如果存在的话)的初始尺寸,其中仅有弹性层83会阻抗延伸。
在一些示例性方法中,层压可在弹性层83和内层82(和外覆盖层84,如果存在的话)两者均松弛时进行。随后可通过使所得层压拉伸腰带经受伸长以在内层82的部分85a(和外覆盖层84的部分85c,如果存在的话)中产生局部破裂来活化所得层压拉伸腰带的全部或一部分。在图26中,具有这种活化部分85的图25的前内拉伸腰带370以拉伸状态显示。内层82的破裂部分85a和外覆盖层84的破裂部分85c以虚线显示,所述虚线表示非织造材料中纤维的示例性断裂和/或分离。所得层压体的活化部分85中的内层82的破裂部分85a(和外覆盖层84的破裂部分85c,如果存在的话)只提供极小的或不提供对于初始伸长方向上的延伸的阻抗。例如,当将非织造材料用于内层82(和外覆盖层84,如果存在的话)时,破裂部分通常包括纤维的断裂和/或分离,这使得破裂部分基本上不能够在非织造材料的平面中传递张力。一些合适的活化方法作为“环轧制”方法为本领域所已知。
拉伸腰带可在其整个区域中具有均匀的延伸特性,或可在不同的部分中具有不同的延伸特性。例如,可使拉伸腰带的一部分横向可延展至大于邻近部分的最大延展性的最大延展性,以便可获得所需的对穿着者的贴合性。可通过改变层压方法来提供延展性的差异,例如通过改变活化过程中的局部伸长率。
能够以许多熟知的方式将尿布20的部分扣紧到一起以环绕穿着者的腰部和腿部。例如,可采用诸如安全别针、单独的胶带、单独的系带或带、和/或单独的束带之类的单独扣紧装置用于该用途。作为另外一种选择或另外,可将扣紧元件结合到底座100中以使得使用者能够无需任何单独的扣紧装置,或与任何单独的扣紧装置一起,将尿布20应用到穿着者的身体上。此类所引入的扣紧元件的很多合适类型已为人们所熟知,例如包括胶带、粘合剂、胶带突出部、系带、纽扣、钩、环、按扣扣件、其它形式的机械扣件、胶贴等等。当被构造来用于使用时,这些被结合的扣紧元件可横向或纵向向外突出,或它们可完全位于尿布20的边缘内。
例如,横向相对的扣紧元件可连接到底座耳部上。图中所示的扣紧元件120设置在后底座耳部108上并且可用于以后压前的方式将后腰区38扣紧到前腰区36上。作为另外一种选择,类似的扣紧元件可设置在前底座耳部106上并且可用于以前压后的方式将前腰区36扣紧到后腰区38上。作为另一种可供选择的方式,类似的扣紧元件可设置在无底座耳部从其上伸出的腰区上并且可用于将腰区连接到从相对腰区伸展出的底座耳部上。
图5和图6所示的扣紧元件120以带状形式从底座耳部108横向向外突出。这些带子可涂敷有粘合剂。为了防止它们过早粘附在表面上,这些胶带扣紧元件通常被折叠以防止露出粘合剂,随后被展开以露出粘合剂以便使用。例如,在图3中,两个扣紧元件120均显示是折叠的,而在图5、图6和图7中,左扣紧元件120a仍显示是折叠的,而右扣紧元件120b显示为展开的并因此被构型用于使用。
任选地,扣紧片(未示出)可连接在底座100的外表面104上,如美国专利申请公布2005/0171499A1中所述。当提供了扣紧片时,可将粘合剂扣紧元件粘附到扣紧片上以将后腰区38和前腰区36扣紧到一起,或为了同样的目的可使其与机械扣紧元件接合。加入这种扣紧片可能是可取的,例如为了能够使用相对廉价和相对较弱的材料来作为底片26。
同样可使用补充性扣紧元件,如美国专利公开申请公布2005/0171499A1中所述的那些。例如,如图11、图12、图13和图14所示,可将后扣紧元件120设置在后底座耳部108上,并且可将补充性前扣紧元件110设置在前腰区36中。合适的补充性扣紧元件可由粘性扣紧贴片、机械扣件,如吊钩和套环、或其它已知的扣紧元件形成。
作为另外一种选择,当采用层压底片并且其被取向成使非织造材料设置在外侧时,通常要求具有特定配对扣件元件的一些机械扣件形式(如通常与套环配合的吊钩)可被构造成与非织造材料接合,从而不必包含特定的配对扣件元件。例如,如图15所示,扣紧元件120可由构造成与层压底片26的非织造层31接合的吊钩扣紧贴片形成。这种吊钩扣紧元件可类似于图13所示的粘性扣紧贴片扣紧元件那样设置。
如美国专利申请公布2005/0171499A1中所述,底座100的一部分或整个底座100可被制成可延展至大于制造底座的材料,如底片26、内衬22或二者的固有延展性的程度。为了使底座100在穿着者运动期间适形穿着者的身体,可能期望附加的延展性。附加的延展性也可以是可取的,例如以便使包括在伸长之前具有特定尺寸的底座100的尿布20的使用者能够伸展底座100的前腰区36、后腰区38或两个腰区以环绕其腰部圆周属于预定范围的个体穿着者的腰部,也就是说,使尿布适合个体穿着者。只要裆区37被伸展到与腰区相比较小的程度,腰区的此类伸长便可使尿布具有大致沙漏形形状,并可在尿布20被穿着时赋予其定制的外形。此外,为了将尿布的成本降至最低,附加的延展性也可以是可取的。例如,可使用通常仅够制成缺乏这种延展性的相对较小尿布的材料量来制成能够被伸展以贴合穿着者的尿布,所述穿着者的体型大于未伸展的较小尿布将贴合的穿着者的体型。换句话讲,为了在材料如所述的那样被制成可延展的时候制造能够被适当贴合到特定身材的穿着者身上的尿布,仅需要更少的材料量。
底座100中的附加横向延展性可以多种方法提供。例如,由其制成底座100的材料可由许多已知方法中的任一种来形成褶绉。作为另外一种选择,底座的全部或一部分可由成形材料纤维网或材料纤维网的成形层压体来制成,如美国专利5,518,801中所述的那些。图17显示了这种成形材料纤维网材料305的示例性片断300。该成形材料纤维网305包括明显的横向延伸的区域310,其中原料已经用压花或另外的变形方法进行改变以形成纤维网中大致纵向取向的交替凸起312和凹谷314的图案。成形材料纤维网305也包括位于横向延伸的改变区域310之间的横向延伸的未改变区域316。使用显著小于延伸超过该点所需的力,该成形材料纤维网能够在垂直于脊的方向上最多延伸至脊和谷变平的点。因此,此类成形材料纤维网表现出与传统弹性材料类似的可延展性质。然而,此类成形材料纤维网可由本来没有弹性的较廉价材料制成,因此它们的使用可提供在吸收制品加工成本方面的优越性。
底座100的前横向中心部分117和/或后横向中心部分118可具有与连接区153和154(在那里侧翼147连接到底座的内表面102上)中的底座的部分不同的延展性范围。除此之外或作为另外一种选择,当经受给定水平的相反张力时,横向中心部分117和118中的任何一个或两者可延展至更大或更小的程度,也就是说,比连接区中底座的部分更容易延展或更不易延展。类似地,底座的横向中心部分中的改变区域与连接区中的改变区域相比可变形至更大或更小的程度,以致使横向中心部分比连接区中的各部分更容易延展或更不易延展。
拉伸腰带下面的底座100的部分可被制成横向可延展的最大延展性大于底座的相邻部分的最大延展性,使得各部分的横向伸出部至其最大延展性,有利于通过使腰区适当贴合穿着者的腰部而将尿布20应用到穿着者的身体上。具体地讲,拉伸腰带下面的和/或相邻拉伸腰带的区域可被制成比底座的其它区域更具高度可延展性,以最大限度地利用拉伸腰带的伸出部的允许范围。
如图19、图20、图21和图22所示,吸收组件200包括吸收芯250。吸收芯250具有横向延伸的前边缘256、纵向相对的后边缘258、左侧边缘257a、以及横向相对的右侧边缘257b。吸收芯250的任何边缘或所有边缘可位于吸收组件200的各自边缘内侧,或可与之重合。例如,在图19所示的示例性吸收组件200中,吸收芯250的侧边257横向位于吸收组件200的侧边237内,而吸收芯250的前边缘256和后边缘258与吸收组件200的各自前边缘236和后边缘238重合。
可在吸收组件200的任何部分内或整个面积内将吸收组件200连接到底座100上。优选地,将吸收组件200在其外表面204上以十字形连接图案,即以形成或排列成交叉或“+”形状的连接图案,连接到底座100上。十字形连接图案可为连续不断的,即整个图案的所有部分可以一种未破损的顺序接触或连接。作为另外一种选择,十字形连接图案可包括分离的部分,从而缺乏连续性,然而仍然使得整个图案形状排列成十字形。例如,不连续的十字形连接图案可包括沿着纵向轴线设置的纵向延伸部分和沿或邻近横向轴线设置的不相连的左横向末端部分和右横向末端部分,从而形成十字形作为总体图案的形状。在十字形连接图案210的范围内,可将吸收组件200连续地或间歇地连接到底座100上,如以点、条、小珠、螺旋线等形式。
示例性连续十字形连接图案210显示于图18、图19、图20、图21和图22中。底座100的位于这种十字形连接图案外的部分190不受与吸收组件200的连接的限制,因此保持具有可延展性。具体地讲,类似图18、图19和图21所示的十字形连接图案210的相对较窄纵向伸展部分212使得前腰区36中和后腰区38中底座100的大部分宽度可自由伸展,从而使得在这些区域中底座100能够横向伸展。类似图18、图19、图20和图22所示的十字形连接图案210的相对较宽横向延伸部分214防止裆区37中吸收组件200连接的那部分底座100在该区域中相对于吸收组件200移动。当弹性股线167通过支撑裆区37提起近侧边缘157接触穿着者的身体时,十字形连接图案210的较宽横向延伸部分214也可有助于侧翼147的效力,从而防止侧翼147变形和未能保持与身体的接触。
十字形连接图案210可相对于底座100的纵向轴线42和横向轴线44中的任何一个或两个对称地设置或不对称地设置。例如,图19所示的十字形连接图案210相对于纵向轴线42对称设置,而相对于横向轴线44不对称地向前腰区36偏移设置。此外,十字形连接图案210可相对于吸收组件200的侧边237中的一个或两个以及前边缘236和后边缘238对称地设置或不对称地设置。十字形连接图案的合适构型公开于美国专利6,962,578中。
可将吸收芯250设置在下覆盖片和上覆盖片之间,所述下覆盖片以与底座内表面102面对面的排列设置在吸收芯250的外表面上,所述上覆盖片设置在吸收芯250的内表面上。可将这种上覆盖片和下覆盖片连接在一起以将吸收芯250包含在它们之间,从而形成吸收组件200。例如,在如图所示的示例性吸收组件200中,上覆盖片24和下覆盖片25在位于或邻近粘附区29中吸收组件200的侧边237处连接在一起。作为另外一种选择,上覆盖片24和下覆盖片25可在除吸收组件200的侧边237以外的地方连接在一起,例如,在位于或邻近端边236和238处,或在同时位于或邻近端边236和238以及侧边237处。
上覆盖片24是水可渗透的并且使液体废物能够经过到达吸收芯250,液体废物被吸收芯吸收。下覆盖片25可为水不可渗透的,但是优选为水可渗透的。上覆盖片24可形成旨在紧贴穿着者的身体放置的吸收组件200的内表面202,因此优选地由将不刺激穿着者的皮肤的柔软材料形成。许多适于水可渗透的覆盖片的材料已为本领域所熟知,所述材料包括合成非织造材料,例如纺粘或梳理成网聚丙烯、聚酯或人造丝。
除了一个或多个存储部件之外,吸收芯还可包括采集组件。吸收芯采集组件起到采集所沉积的液体身体排泄物材料并且将其传送至吸收芯存储部件的作用。优选的采集部件材料包括合成纤维材料、开孔型聚合物泡沫材料、纤维非织造材料、纤维质非织造材料、以及各种组合的合成/纤维质非织造材料。此类采集材料的实施例更全面地描述于美国专利4,950,264中。图22中显示了包括与吸收芯存储部件272重叠的采集组件290的吸收芯250。可将例如薄纸或非织造材料的分隔片292设置在吸收芯存储部件272和吸收芯采集组件290之间,以帮助确保没有任何可被包括在吸收芯存储部件中的超吸收聚合物所形成的凝胶到达穿着者的皮肤。
适用于吸收芯的熟知吸收材料包括通常称作“透气毡”的粉碎木浆形式的纤维素纤维、天然或合成纤维材料层或片、超吸收聚合物等。这些吸收材料可单独使用或组合使用,并且许多可以离散形式使用,即,以纤维、颗粒、微粒、层等形式使用。
离散形式的吸收材料可被固定在由间断地接触和粘附到基底(例如覆盖片)上的一层热塑性材料(例如热熔性粘合剂)形成的口袋中,同时在口袋处热塑性材料层脱离基底。具有这种口袋结构的吸收组件详细描述于美国专利申请公布2004/0167486和2004/0162536中。具有这种结构的示例性吸收组件200示于图23。在该吸收组件200中,吸收芯250包括容纳在由热塑性材料层275形成的口袋280内的超吸收聚合物270颗粒。这种吸收芯250不包含纤维素纤维。作为另外一种选择,吸收芯250可包括超吸收聚合物颗粒和透气毡,并且两种材料均可被包含在口袋中。如图23所示,热塑性材料层275在连接区域282处间断地接触并粘附到下覆盖片25上。在连接区域282之间,层275脱离下覆盖片25形成口袋280。层275可具有热塑性材料纤维片的形式,液体废弃物可透过所述纤维片到达超吸收聚合物颗粒270而被吸收。在图23中,显示了单独的上覆盖片24,其叠放在热塑性材料层275上。作为另外一种选择,可省略单独的上覆盖片24,并且纤维片形式的层275可起到上覆盖片24的作用。
所有公开的专利、专利申请和任何此后公布的相关专利与任何各自公布的外国专利申请以及此说明书中列出和/或引用的所有出版物均以引用方式全文引入本文。没有明确承认以引用方式并入本文的文献中的任一个或文献的任何组合提出或公开了本发明。在术语定义之间存在任何冲突的情况下,本说明书中的用法优先于任何所引入参考文献中的相冲突的用法。
虽然已经举例说明和描述了本发明的具体实施方案,但是对于本领域的技术人员来说显而易见的是,在不背离本发明的实质和范围的情况下可以做出多个其它改变和变型。因此,权利要求书意欲包括在本发明范围内的所有这样的改变和变型。
Claims (10)
1.一种一次性尿布(20),所述一次性尿布包括:
底座(100),所述底座具有前腰区(36)、后腰区(38)、以及位于所述两腰区之间的裆区(37);限定其宽度的横向相对的侧边(137);限定其长度的纵向相对的前腰端边和后腰端边(136,138);内表面(102)和外表面(104);和
连接到所述底座的内表面上的吸收组件(200),所述吸收组件具有相对于所述底座的相应侧边和端边而邻近地设置的侧边(237)和端边(236,238),
所述底座包括水不可渗透的底片(26)和由在至少所述裆区中的所述底座的横向向内折叠的部分形成的横向相对的侧翼(147),每个侧翼连接到邻近其纵向远端的内表面上并且具有邻近其近侧边缘(157)连接的纵向延伸的弹性收紧构件(167),
所述底座还包括至少一对横向相对的可展开的底座耳部(108),所述底座耳部由在至少一个所述腰区内的底座的横向向内折叠的部分形成,每个底座耳部保持横向向内折叠,直到横向向外展开以致横向向外突出超过各自的侧翼;和
在至少一个所述腰区中连接到所述底座上的至少一个拉伸腰带(370、390),所述拉伸腰带覆盖该对底座耳部中的每一个的至少一部分并且在它们之间横向连续延伸,所述拉伸腰带在所述相应腰区被横向扩展时提供收缩力。
2.如权利要求1所述的一次性尿布,其中每个底座耳部均通过易断连接线(91)保持横向向内折叠,直到在所述易断线处分离并横向向外展开。
3.如权利要求1所述的一次性尿布,其中每个耳部通过可释放连接构件(94)保持横向向内折叠,直到在所述连接构件处被释放并横向向外展开。
4.如权利要求3所述的一次性尿布,其中所述可释放连接构件包括补充性可释放连接元件(95、96),所述补充性可释放连接元件分别设置在所述底座耳部上和所述横向向内折叠底座耳部下面的内表面上。
5.如前述任一项权利要求所述的一次性尿布,所述一次性尿布包括两个所述拉伸腰带。
6.如权利要求5所述的一次性尿布,其中所述两个拉伸腰带中的一个设置在所述后腰区中,并且所述两个拉伸腰带中的另一个设置在所述前腰区中。
7.如权利要求5所述的一次性尿布,其中所述两个拉伸腰带中的一个设置在内部,并且所述两个拉伸腰带中的另一个设置在外部。
8.如权利要求5所述的一次性尿布,其中所述两个拉伸腰带设置在同一个腰区中。
9.如前述任一项权利要求所述的一次性尿布,其中所述拉伸腰带包括三层层压材料,所述三层层压材料包括内层(82)、外覆盖层(84)、以及夹在所述内层和所述外覆盖层之间的弹性层(83)。
10.如权利要求9所述的一次性尿布,其中所述三层层压材料包括活化部分(85),其中所述内层的破裂部分(85a)和所述外覆盖层的破裂部分(85c)基本上不提供对于伸长的阻抗,并且所述弹性层提供所述收缩力。
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2007
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-
2008
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- 2008-03-19 MX MX2009010026A patent/MX2009010026A/es unknown
- 2008-03-19 JP JP2009553843A patent/JP2010521248A/ja not_active Withdrawn
- 2008-03-19 WO PCT/US2008/057489 patent/WO2008118713A1/en active Application Filing
- 2008-03-19 CN CN200880009595A patent/CN101641066A/zh active Pending
- 2008-03-19 CA CA002681772A patent/CA2681772A1/en not_active Abandoned
- 2008-03-19 BR BRPI0808650-8A2A patent/BRPI0808650A2/pt not_active IP Right Cessation
Cited By (14)
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US11298271B2 (en) | 2015-12-28 | 2022-04-12 | Unicharm Corporation | Absorbent article |
CN108472173A (zh) * | 2015-12-28 | 2018-08-31 | 尤妮佳股份有限公司 | 吸收性制品 |
CN108472173B (zh) * | 2015-12-28 | 2024-01-16 | 尤妮佳股份有限公司 | 吸收性制品 |
CN108883006A (zh) * | 2015-12-28 | 2018-11-23 | 尤妮佳股份有限公司 | 吸收性制品 |
US10799397B2 (en) | 2015-12-28 | 2020-10-13 | Unicharm Corporation | Absorbent article |
CN109475450A (zh) * | 2016-07-05 | 2019-03-15 | 易希提卫生与保健公司 | 具有改进的紧固系统的吸收性物品和制造这种吸收性物品的方法 |
US11850132B2 (en) | 2016-07-05 | 2023-12-26 | Essity Hygiene And Health Aktiebolag | Absorbent article having an improved fastening system and a method to manufacture such absorbent article |
CN109475450B (zh) * | 2016-07-05 | 2020-06-09 | 易希提卫生与保健公司 | 具有改进的紧固系统的吸收性物品和制造这种吸收性物品的方法 |
CN110198695A (zh) * | 2017-01-20 | 2019-09-03 | 易希提卫生与保健公司 | 一次性物品 |
US11331229B2 (en) | 2017-02-27 | 2022-05-17 | Kimberly-Clark Wordwide, Inc. | Diaper pants having a waistband that provides softness and skin comfort |
CN109310539A (zh) * | 2017-02-27 | 2019-02-05 | 金伯利-克拉克环球有限公司 | 具有提供柔软性和皮肤舒适性的腰带的尿裤 |
US11957553B2 (en) | 2017-02-27 | 2024-04-16 | Kimberly-Clark Worldwide, Inc. | Diaper pants having a waistband that provides softness and skin comfort |
US10993857B2 (en) | 2017-12-22 | 2021-05-04 | Essity Hygiene And Health Aktieboolag | Absorbent article and method of manufacturing same |
US10973711B2 (en) | 2017-12-22 | 2021-04-13 | Essity Hygiene And Health Aktiebolag | Absorbent article and method of manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
BRPI0808650A2 (pt) | 2014-08-12 |
US20080234649A1 (en) | 2008-09-25 |
MX2009010026A (es) | 2009-10-12 |
CA2681772A1 (en) | 2008-10-02 |
JP2010521248A (ja) | 2010-06-24 |
US7857801B2 (en) | 2010-12-28 |
WO2008118713A1 (en) | 2008-10-02 |
EP2124860A1 (en) | 2009-12-02 |
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