CN100525841C - 疏水表面涂层的吸收制品 - Google Patents

疏水表面涂层的吸收制品 Download PDF

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CN100525841C
CN100525841C CNB2005800046659A CN200580004665A CN100525841C CN 100525841 C CN100525841 C CN 100525841C CN B2005800046659 A CNB2005800046659 A CN B2005800046659A CN 200580004665 A CN200580004665 A CN 200580004665A CN 100525841 C CN100525841 C CN 100525841C
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polydimethylsiloxane
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凯梅尔·卡塔兰
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    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y10T442/20Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
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    • Y10T442/218Organosilicon containing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60Nonwoven fabric [i.e., nonwoven strand or fiber material]
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Abstract

本发明涉及包括已用疏水表面涂层处理过的一个或多个组件的吸收制品,所述疏水表面涂层旨在使此类组件对较低表面张力的液体不具有渗透性。

Description

疏水表面涂层的吸收制品
相关申请的交叉参考
本申请要求于2004年2月11日提交的美国临时申请60/543,785的优先权。
发明领域
本发明涉及吸收制品,所述吸收制品包括已用疏水表面涂层处理过的一个或多个组件,所述疏水表面涂层旨在使此类组件对较低表面张力的液体不具有渗透性。
发明背景
消费者利用诸如尿布、训练裤、卫生巾、紧身短裤衬里和成人失禁制品之类的一次性吸收制品的主要目的是吸收和容纳身体流出物。给定此目的,情况通常是此类身体流出物由于从制品接触皮肤的某一点处漏出或由于渗透穿过构成吸收制品的材料而逸出制品的边界。后一种情况通常是由于制品材料不能对此类体液起到有效屏障的作用而造成的。
漏出和/或密封不当、以清洗和/或残留的皮肤污染的令人讨厌的结果对于沉积在尿布上的粪便尤其明显。容纳在尿布中的粪便会随着时间对穿着者的皮肤造成损害,而且从尿布中漏出的粪便几乎总是需要清洗,而这种清洗既不令人愉快又会产生脏乱。因此,已做过一些尝试来试图为尿布增加一些特征,如隔层、小袋、间隔材料、横向隔层、开孔顶片等,以限制粪便在顶片上移动和/或更好地将粪便物禁闭在尿布内。这类尝试通常是不成功的,因为它们没有找到这些问题的根本原因(即,粪便的性质),并且也因为它们的高成本和复杂性。此外,许多用于隔离或容纳粪便的方法涉及粪便的某些物理性质(如,粘度、游离水含量和粒径)并且对于物理性质不在这个极小范围内的渗出物是无效的。
因此,希望给吸收制品提供改进的低表面能流体控制能力,尤其是粪便控制。此外,提供一种经济的一次性制品将是有利的,所述制品能够将粪便或其它粘稠的身体排泄物对于穿着者或护理人员的负面影响降至最小。同样有利的是提供这样一种制品,其设计成能化学地或物理地与构成制品的材料相互作用以及减少可能发生的渗漏和/或渗透的量。
发明概述
为了帮助解决至少某些上述问题,本发明提供了一种制品,其包括:
a.液体可透过的具有内表面和外表面的第一顶片;
b.具有内表面和外表面的底片,其中所述底片沿着周边被附连到所述顶片上;
c.设置在所述顶片和所述底片之间的吸收芯;
d.附加制品组件,所述附加制品组件选自芯覆盖件、尿布外覆盖件、耳件、第一箍、第二箍、带子、护翼、弹性化的顶片,以及它们的组合;其中所述组件具内表面和外表面;和
e.疏水表面涂层,所述疏水表面涂层设置在所述底片或所述附加制品组件的至少一个表面上,其中所述涂层包括一种或多种硅氧烷聚合物,并且其中所述涂层基本上不含氨基硅氧烷。
附图概述
图1显示本发明吸收制品的平面视图。
图2显示本发明吸收制品的透视图。
图3显示图2所示吸收制品的剖面图。
图4说明用本发明的疏水表面涂层处理之前本制品的一个组件。
图5说明已经依照本发明的疏水表面涂层处理过的本发明制品的一个组件。
图6说明已经依照本发明的另一种疏水表面涂层处理过的本发明制品的一个组件。
图7借助于透视图说明了本发明的另一个实施方案,其中疏水表面涂层已经被用于吸收制品的至少一个弹性化的顶片上。
发明详述
对于本发明,本文详细说明了各种定义,其用来帮助解释受权利要求书保护的事项。
本文所用术语“吸收制品”是指吸收和容纳身体渗出物的装置,更具体地讲是指紧贴或靠近穿着者身体放置以吸收和容纳由身体排出的各种渗出物的装置。此类装置包括但不限于尿布、训练裤、成人失禁产品、卫生巾和短裤护垫。
本文所用术语“尿布”是指通常由婴儿或失禁患者围绕下体穿用的吸收制品。换句话讲,术语“尿布”包括婴儿尿布、训练裤、成人失禁用装置等。
本文所用术语“一次性的”是指通常不打算洗涤、或换句话讲复原、或作为吸收制品再使用的吸收用品(即,它们设计在一次性使用后丢弃,优选将其回收利用、堆肥处理或以其它与环境相容的方式进行处理)。
本文所用术语“调聚物”是指一种加成聚合物,通常低分子量加成聚合物,其中用自由基链转移剂或是用链状分子末端上的端基与侧基不一样的低分子量聚合物终止分子增长。调聚物也可用作低聚物的同义词,其为一种具有很少(二至十个)重复单元的聚合物。
本文所用术语“设置”是指在特定的地点或位置与尿布的其它元件一起作为(连接或定位)一体结构或是作为独立的元件与尿布的另一个元件相连形成尿布的元件的方法。
本文所用术语“接合”包括通过将元件直接附加到其它元件上而将元件直接固定到另一个元件的构型,和通过将元件附加到中间构件(所述中间构件依次附加到其它元件上)而将一个元件间接固定到另一个元件的构型。
“一体的”吸收制品是指由结合在一起的独立部分形成共同实体从而形成的吸收制品,这样它们无需单独的处理部分,如单独的支持物和衬垫。
本文所用术语“包括”是指实施本发明过程中可结合应用的各种组分、成分或步骤。因此,术语“包括”包括更多限制性的术语“基本上由...组成”和“由...组成”。
除非另外指明,本文中所使用的所有百分数、比率和比例均以重量计。
吸收制品
本发明的一次性吸收制品包括液体可透过的第一顶片、附连或接合到顶片上的底片以及位于顶片和底片之间的吸收芯。一次性吸收制品以及它们的组件,包括顶片、底片、吸收芯和这些组件的任何各个层在内,均具有内表面(或身体表面)和外表面(或衣服表面)。本文所用“内表面”或“身体表面”是指在一次性吸收制品被穿着时,被穿着朝向或贴近穿着者身体的所述制品或组件表面,而“外表面”或“衣服表面”是在相反的一侧并将朝向或置于贴近穿着者内衣穿着的表面。
下面的说明大体上讨论用于一次性吸收制品中的吸收芯、第一顶片和底片材料。应当理解,除了本文一般所述的其它一次性吸收制品的那些组件之外,该一般说明适用于图1所示的和下面将进一步说明的具体吸收制品的这些组件。
图1为本发明的尿布50处于其平展未收缩状态(即,由于弹性导致的收缩被拉直)的平面视图,部分结构被切掉以便更清楚地显示尿布50的构造,并且尿布50背向穿着者的部分,即外表面,朝向观察者。如图1所示,尿布50优选地包括液体可透过的第一顶片520、与顶片520连接的液体不可透过的底片530、设置在第一顶片520和底片530之间的吸收芯540,吸收芯540具有外表面(或朝向衣服表面)542、内表面(或朝向身体表面)544、侧边546、腰部边缘548和耳片549。尿布50优选地还包括第一箍550、第二箍511和附加箍512、标为560的弹性腰部组件层(本文也称作腰带或带子)和通常标为570的扣紧系统层。
图1中所示的尿布50具有外表面52、与外表面52相对的内表面54、第一腰区56、第二腰区58和由其中纵边标为55和端边标为57的尿布50的外边缘确定的周边51。(尽管技术人员会认识到,尿布通常根据具有一对腰区和在腰区之间的裆区进行说明,但在本申请中为了术语简化起见,将尿布50描述成仅具有腰区,包括尿布将典型地被标为裆区部分的部分在内。尿布50的内表面54包括尿布50在使用期间邻近穿着者身体放置的那部分(即,内表面54通常至少由第一顶片520的一部分和可被连接到第一顶片520上的其它组件所构成)。外表面52包括尿布50远离穿着者的身体放置的那部分(即,外表面52通常至少由底片530的一部分和可被连接到顶片530上的其它组件所构成)。(本文所用的尿布50或它的组件朝向穿着者的部分也称作朝向身体表面。类似地,朝向远离穿着者的部分本文也称作朝向衣服表面。)第一腰区56和第二腰区58分别从周边51的端边57延伸到尿布50的横向中心线53。图1也显示了纵向中心线59。
图2显示了包括至少第一和第二箍的本发明制品的透视图,其中底片和至少一个附加组件已经用疏水表面涂层进行了处理。图3仅仅显示图2所示尿布的剖面视图。
吸收芯
吸收芯540可采用与尿布50相适应的任何尺寸和形状。尿布50的一个优选实施方案具有不对称的、修改的T型吸收芯540,其在第一腰区具有耳片然而在第二腰区通常呈矩形形状。已经获得广泛接受和商业成功的用作本发明吸收芯的示例性吸收结构被描述于美国专利4610678467340248882314834735中。吸收芯可还包括包含设置在吸收存储芯上的化学硬化纤维的采集/分配的双芯系统,如美国专利52344235147345中所详述的那样。
一般而言,吸收芯能够吸收和保持液体(例如,月经、尿液和/或其它身体流出物)。吸收芯优选地是可压缩的、适形的和对穿着者的皮肤无刺激性。吸收芯可包括通常用于吸收制品中的多种吸液材料的任意一种,例如通常称为透气毡的粉碎的木浆。用于吸收芯的其它适用的吸收材料的实施例包括:绉纱纤维素填料、包括共成型的熔喷聚合物、化学硬化、改性或交联的纤维素纤维、合成纤维如卷曲的聚酯纤维、泥煤苔藓、包括薄纸包装材料和薄纸层压材料的薄纸、吸收泡沫、吸收海绵、超吸收聚合物、吸收胶凝材料、或任何等同的材料或材料组合或这些材料的混合物。
也可改变吸收芯的构型和结构(例如,吸收芯可具有不同的厚度区和/或具有使在中心处更厚的轮廓、亲水梯度、本发明的吸收复合材料的梯度、超吸收梯度、或较低的平均密度和较低的平均基重区,例如采集区,或可包括一个或多个层或结构)。然而,吸收芯的总的吸收能力应当与设计载荷和吸收制品的预期用途相适应。此外,吸收芯的尺寸和吸收能力可进行变化以适应诸如尿布、失禁衬垫、短裤护垫、日用卫生巾和夜用卫生巾的不同用途以及适应从婴儿至成人范围的穿着者。吸收芯可包括通常用于吸收制品的其它吸收组件,例如除尘层、芯吸或采集层、或用于增加穿着者舒适度的辅助(例如弹性化的)顶片。
顶片
尿布50的第一顶片520优选地由亲水材料制成,它促使液体(例如,尿、月经和/或稀便)快速渗过第一顶片。如果第一顶片由疏水性材料制成,则至少第一顶片的上表面被处理成亲水的,以便液体将更快地渗过第一顶片。这减小了身体流出物将流出顶片而不是渗透过顶片并被吸收芯所吸收的可能性。可通过表面活性剂处理第一顶片使其呈现亲水性。用表面活性剂处理顶片的适用方法包括在顶片材料上喷洒表面活性剂和将材料浸渍入表面活性剂中。在美国专利4988344和美国专利4988345中更详细地讨论了这种处理和亲水性。
顶片优选为柔顺的、触觉柔软的和对穿着者的皮肤无刺激的。另外,顶片为液体可透过的,允许液体(例如,月经、尿液和/或稀便)易于渗透其厚度。合适的顶片可由如机织物和非织造材料(例如非织造材料纤维网)之类的范围广泛的材料制成;如有孔形成的热塑性薄膜、有孔塑料薄膜和液压成形的热塑性薄膜之类的聚合材料;多孔泡沫;蜂窝状泡沫;蜂窝状热塑性膜和热塑性稀松布。合适的机织物和非织造材料可包括天然纤维(例如木纤维或棉纤维)、合成纤维(例如诸如聚酯、聚丙烯或聚乙烯纤维之类的聚合物纤维)或天然纤维与合成纤维的组合物。当顶片包括非织造纤网时,该网可用多种已知的技术进行加工。例如,纤网可用纺粘、梳理、湿法成网、熔喷、水刺法及以上方法的组合等技术进行加工。
此外,依照本发明的制品可包括弹性化的顶片来提供身体流出物、尤其是排粪的存储隔室。此类顶片和包括它们的制品被详述于美国专利6482191中。在本发明的一个附加实施方案中,图7显示了这样一种弹性化的顶片600。
底片
底片优选地对于低表面张力流体(例如,月经、尿液和/或稀便)不具有渗透性。本文所用的“低表面张力流体”是指表面张力小于约72dynes/cm,优选地小于约60dynes/cm,以及甚至更优选地小于约55dynes/cm,以及最优选地从约25至约55dynes/cm的流体。底片优选地由薄塑料膜构成,尽管也可使用其它柔韧的液体不可透过的材料。本文所用术语“柔韧的”是指柔顺的并且容易与人体的大致形状和轮廓相符的材料。底片防止吸收芯中所吸收和容纳的渗出物浸湿与吸收制品接触的制品例如床单、衬裤、睡衣和内衣。因此底片可包括机织物或非织造材料、诸如聚乙烯或聚丙烯的热塑性薄膜之类的聚合物薄膜、或诸如膜涂层的非织造材料之类的复合材料。合适的底片为厚度为约0.012mm(0.5mil)至约0.051mm(2.0mils)的聚乙烯薄膜。示例性的聚乙烯薄膜由俄亥俄州Cincinnati的Clopay Corporation以代码P18-1401和印第安纳州Terre Haute的Tredegar Film Products以代码XP-39385进行生产。底片优选地被压花和/或表面打毛并提供更像布料的外观。此外,底片在仍能防止渗出物透过底片的同时允许水蒸气从吸收芯中逸出,即底片是透气的。底片的大小由吸收芯的大小和所选的精确的吸收制品样式确定。
底片和第一顶片分别置于邻近吸收芯的衣服表面和身体表面。吸收芯可优选地与顶片、底片或此两者进行连接,其连接以已知的通过诸如为本领域所熟知的那些附连方法(图1中未示出)的任何方式进行。然而,本发明的实施方案所预想的是其中整个吸收芯部分不与顶片和底片中的一个或两个相连接。
例如,通过粘合剂的均匀连续层、粘合剂的图案层、或一排单独的粘合剂线、螺旋线或点,底片和/或第一顶片可固定在吸收芯上或相互连接。已经发现,令人满意的粘合剂由威斯康辛州Milwaukee的Bostik-Findley以代码HL-24012031生产。粘合方法优选地将包括粘合剂长丝的开式图案网络,如授予Minetola等人的美国专利4573986中所公开的那样。长丝的开式图案网络的示例性粘合方法包括几排盘绕成螺旋图案的粘合剂长丝,如由授予Sprague,Jr.的美国专利3911173、授予Zwieker等人的美国专利4785996和授予Werenicz的美国专利4842666中所示的装置和方法所说明的那样。可供选择地,粘合方法可包括热粘合、压力粘合、超声粘合、动态机械粘合或任何其它合适的粘合方法或本领域已知的这些粘合方法的组合。
附加组件
在一个优选的实施方案中,尿布50还包括用于提供改进的液体和其它身体流出物容纳性的至少一个第一箍550、一个提供改进的贴合性和容纳性的弹性腰部组件560和一个形成侧闭合的扣紧系统570,侧闭合保持第一腰区56和第二腰区58处于重叠构型使得绕着尿布的圆周保持侧张力将尿布保持在穿着者身上。尿布50也可包括在腰区56和58中的弹性化侧片(未示出)以提供一个可弹性延展的特性,其提供尿布50更舒适和符合轮廓的贴合性和更有效的应用。
弹性化的腿箍550可以构造成许多不同的构型,包括描述于美国专利3860003、4636207,4695278、4704115、4795454、4900317、4909803(再公布为USRE34920)、5085654、5492751、6476288和SIR H1630。
例如,尿布50可包括一个或多个第一箍550,其提供改进的液体和其它身体流出物的容纳性。第一箍550也可称作外腿箍、腿围、侧翼、腿箍或弹性箍。美国专利3,860,003描述了一次性尿布,其提供一个具有侧翼的可收缩的腿部开口来和一个或多个弹性构件提供的弹性化的腿箍。
此外,尿布50可包括也提供改进的液体和其它身体流出物的容纳性的一个或多个第二箍511。第二箍511也可称作阻碍腿箍、内腿箍或“直立”弹性侧翼。1989年2月28日和1990年3月20日授予Aziz等人的美国专利4,808,178和4,909,803分别描述了具有可改善腿部区域密封性的“直立”弹性侧翼的一次性尿布。
均可以以双箍的方式提供第一箍550和第二箍511,如1987年9月22日授予Lawson的和1989年1月3日授予Dragoo的美国专利4,695,278和4,795,454中分别所示例的那样。
在本发明的制品中可提供附加箍512,如1997年1月7日公布的美国法定发明登记H1630中所详述的那样。
图2显示了包括至少一个或多个第一和第二箍的依照本发明的尿布的透视图,其中至少一个箍已经用疏水表面涂层进行了涂敷。
图3显示了图2所示尿布的剖面视图。在某些实施方案中,由于在第一箍上使用疏水涂层,第二箍并非必需的。
弹性化的腰部组件优选地包括一个弹性腰带(未示出),其可以构造成很多不同构型,包括美国专利451559550263645151092中所描述的那些。尿布或吸收制品的这个腰带或带子可包括某些种类的开口,其为不受婴儿肚脐放置的干扰,婴儿肚脐在出生后一段时间内往往会很敏感。优选地,这个切口呈半圆形,然而可呈便于婴儿肚脐舒适贴合的任何几何形状。
弹性侧翼可以构造成很多构型。具有位于尿布的耳片(或耳翼)中的弹性侧翼的实施例被公开于美国专利4857067438178149387535151092
示例性的扣紧系统570被公开于美国专利484681548940604946527384859446628755151092中。
疏水表面涂层
本发明的一次性吸收制品还包括一个疏水表面涂层,其设置在制品的一种或是多种各组件(包括但不限于芯覆盖件、尿布外覆盖件、耳片、护翼、带子、底片、第一箍、第二箍乃至它们的组合)的至少一个表面上。这个疏水表面涂层包括一种或多种硅氧烷聚合物并且也基本上不含氨基硅氧烷。
适用的硅氧烷聚合物选自硅氧烷MQ树脂、聚二甲基硅氧烷、交联硅氧烷、硅氧烷液体弹性体,以及它们的组合。典型地,此类硅氧烷聚合物的分子量应当至少为约4000MW,优选地至少约10,000MW,更优选地至少约15,000MW,甚至更优选地至少约20,000MW,以及最优选地至少约25,000MW。优选的聚二甲基硅氧烷选自乙烯基封端的聚二甲基硅氧烷、甲基氢聚二甲基硅氧烷、羟基封端的聚二甲基硅氧烷、有机改性的聚二甲基硅氧烷,以及它们的组合。
可供选择地,也可使用氟化聚合物。适用的氟化聚合物选自含有四氟乙烯和/或氟烷基链的调聚物和聚合物。例如,购自Dupont的tradename的氟化表面活性剂适用于本发明。具体地讲,
Figure C200580004665D00112
 321、329、8740、9027和9360均适用于本发明。此外,本发明还可使用包括像微粉一样的氟基添加剂的其它
Figure C200580004665D00113
材料。这些
Figure C200580004665D00114
材料包括但不限于MP1100、MP1200、MP1400、MP1500J、MP1600N、TE-3667N(其为水分散体)。
不受理论的束缚,申请人已经发现,这些疏水表面涂层在施用到吸收制品组件上时,以粘性的、均匀薄膜状的网络围绕着纤维结构形成并部分填充纤维结构的孔隙网络这样的方式趋于封裹或至少部分涂敷组件的一个或多个纤维结构。该薄膜状网络在暴露于低表面能流体时起到增加组件的阻挡性能的作用。图4、5和6说明了薄膜状网络。在图4中,描述了未涂敷的15gsm纤维熔喷非织造材料。在图5中,图4的非织造材料已经用称作PSA950的疏水表面涂层进行了处理,PSA950商购自GESilicones。PSA950是一种压敏粘合剂,其为苯基硅氧烷溶剂。这时,薄膜状网络已经在非织造材料的纤维结构之间形成。同样,在图6中,图4的未涂敷的熔喷非织造材料用称为织物防水剂的疏水表面涂层进行了涂敷,C2-0563商购自Dow Corning。而且很显然,薄膜状网络在纤维之间和在非织造材料的孔隙中被形成,从而改善了它的阻挡性质。
在本发明的某些实施方案中,涂层可本身具有弹性。因此,当沉积到吸收制品组件的一个或多个表面上时,疏水表面涂层可另外给拉伸时的制品组件提供弹性特性。
此外,尽管考虑到本发明主要涉及吸收性个人护理制品,可容易预见到,本文所公开的疏水表面涂层也可被设置到用于其它目的的底物上。例如,处理过的底物可被用于加工各种外科手术或医药材料(例如,手术服、消毒盖布、鞋套和帽子)、擦拭物(例如,轿车清洁、透镜清洁、包装、湿清洁和除尘)、消费者服装等。
此外,重要的是要注意到,当涂层被沉积到制品组件上时,优选地组件基本上不含有包括选自聚二甲基硅氧烷、格尔伯特酯以及它们的组合的熔融添加剂的聚合物。
测试方法
液体透湿
涂敷底物的阻挡性能通过测量其中添加到底物表面上的液体渗透底物表面的时间而确定。测试方法符合Edana方法150.4-99,使用Lister SN
L5725型号1998,变动如下:
1.参考吸收垫由Empirical Mfg.Co.,Inc.(俄亥俄州Cincinnati513-948-1616)供应的10层滤纸(100mm x 100mm Ahlstrom等级989)组成。
2.模拟的稀便/尿液流体混合物由0.04%(w/v)tRiton-X-100(CAS#9002-93-1)水溶液组成,其表面张力为约32±mN/m。
3.在每次测试开始之前,并在每次重复之间,用0.9% NaCl水溶液漂洗Lister电极。
平均液体透湿通过将时间总和除以所测试的组件样本数量来确定。典型地,样本数量将为约30,即,n=30。
为了确定所引起的液体透湿时间的增加,进行了涂敷的样本对未涂敷的(或未处理的)样本的平均液体透湿时间的比较。
实施例
实施例1
本发明的疏水表面涂层通过喷镀、浸渍或采用成30:1比率的乙烯基封端的聚二甲基硅氧烷和甲基氢聚二甲基硅氧烷水溶液的湿润辊来制备,以便将涂层沉积在底物上。用于本实施例的底物非织造材料为13gsm、15gsm、17gsm、20gsm、30gsm和34gsm纺粘/熔喷/纺粘聚丙烯非织造材料以及15gsm和20gsm的熔喷聚丙烯非织造材料,它们购自各个供应商。含水混合物也包含一种过渡金属催化剂来促进PDMS聚合物的自交联。如果样本借助于商业或实验室涂敷工艺进行涂敷,湿涂敷的底物在90℃至120℃进行干燥0.1分钟至1.0分钟,然后存储在适用的容器中以备后用。
实施例2
准备了用疏水表面涂层处理过的非织造材料尿布箍组件。准备了乙烯基封端的PDMS(以商品名SM3200购自GE Silicones)和氢甲酯PDMS(以商品名SM3010购自GE Silicones)的10%溶液并搅拌30分钟。如美国专利5492751中所详述的那样,将典型的箍组件(纺粘-熔喷非织造材料)浸渍到溶液中并通过压光辊挤出多余的液体并在一个空气对流炉中在90℃至120℃的温度下将组件烘干不超过45秒的时间,将涂层沉积在底物上。如美国专利3860003、4636207、4695278、4704115、4795454、4900317、4909803(再公告为USRE34920)、5085654、5492751、6476288和SIRH1630中所详述的那样将箍材料结合到尿布中。
实施例3
准备了用疏水表面涂层处理过的非织造材料尿布箍和/或底片组件。准备了烯基封端的PDMS(以代号SM2245购自GE Silicones)和氢甲酯PDMS(以代号SM2014c购自GE Silicones)的10%溶液并搅拌30分钟。将由如美国专利5492751中所详述的纺粘-熔喷非织造材料构成的箍和/或底片组件浸渍到溶液中并借助于压光辊挤出多余的液体并在一个空气对流炉中在90℃至120℃的温度下将组件烘干不超过45秒的时间,将涂层沉积在底物上并如美国专利3860003、4636207、4695278、4704115、4795454、4900317、4909803(重新公布为USRE34920)、5085654、5492751、6476288和SIR H1630中所详述的那样结合到尿布中。
在发明详述中引用的所有文献的相关部分均引入本文以供参考;任何文献的引用并不可理解为是对其作为本发明的现有技术的认可。
尽管已用具体实施方案来说明和描述了本发明,但对于本领域的技术人员显而易见的是,在不背离本发明的精神和保护范围的情况下可作出许多其它的变化和修改。因此,有意识地在附加的权利要求书中包括本发明范围内的所有这些变化和修改。

Claims (5)

1.一种吸收制品,所述吸收制品包括:
a.具有内表面和外表面的液体可透过的第一顶片;
b.具有内表面和外表面的底片,其中所述底片沿着周边被附连到所述顶片上;
c.设置在所述顶片和所述底片之间的吸收芯;
d.附加制品组件,所述附加制品组件选自芯覆盖件、尿布外覆盖件、耳件、第一箍、第二箍、带子、护翼、弹性化的顶片,以及它们的组合;其中所述组件具有内表面和外表面;和
e.疏水表面涂层,所述疏水表面涂层设置在所述底片或所述附加制品组件的至少一个表面上,其中所述涂层包括一种或多种硅氧烷聚合物,
其中硅氧烷聚合物具有至少4000MW的分子量;
其中所述硅氧烷聚合物为聚二甲基硅氧烷,所述聚二甲基硅氧烷选自乙烯基封端的聚二甲基硅氧烷、甲基氢聚二甲基硅氧烷、有机改性的聚二甲基硅氧烷、羟基封端的聚二甲基硅氧烷,以及它们的组合。
2.如权利要求1所述的制品,其中所述涂层设置在所述底片或所述附加制品组件的所述内表面上。
3.如权利要求1所述的制品,其中其上设置有所述涂层的制品组件不含包含熔融添加剂的聚合物,所述熔融添加剂选自聚二甲基硅氧烷、格尔伯特酯,以及它们的组合。
4.如权利要求1所述的制品,其中所述制品还包括在腰部组件上用于放置婴儿肚脐的切口。
5.如权利要求1所述的制品,其中所述制品包括沿着所述顶片和所述底片的周边设置的至少一个箍,所述箍具有内表面和外表面。
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US8097767B2 (en) 2012-01-17
US20100057028A1 (en) 2010-03-04
EP1718344A1 (en) 2006-11-08
ATE489114T1 (de) 2010-12-15
US7626073B2 (en) 2009-12-01
JP2010137062A (ja) 2010-06-24
US20050177123A1 (en) 2005-08-11
WO2005077429A1 (en) 2005-08-25
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CN1917908A (zh) 2007-02-21
DE602005024924D1 (de) 2011-01-05

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