CN114765951A - 用于吸收体液的吸收性卫生物品 - Google Patents

用于吸收体液的吸收性卫生物品 Download PDF

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CN114765951A
CN114765951A CN201980102567.0A CN201980102567A CN114765951A CN 114765951 A CN114765951 A CN 114765951A CN 201980102567 A CN201980102567 A CN 201980102567A CN 114765951 A CN114765951 A CN 114765951A
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absorbent
cellulose
web
fibres
fibers
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A·巴格尔-舍贝克
M·赫勒
P·布罗姆斯特伦
L·芬戈尔
A·尼尔斯特兰德
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Essity Hygiene and Health AB
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Essity Hygiene and Health AB
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Abstract

一种用于吸收体液的吸收性卫生物品(1),该物品包括可渗透液体的顶片(2)、底层(3)和设置在顶片(2)与底层(3)之间的吸收芯(4),顶片(2)和底层(3)由卷材制成。顶片(2)和/或吸收芯(4)中的吸收层(4’)由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,纤维素纤维幅为泡沫成型的、水刺缠结纤维幅。

Description

用于吸收体液的吸收性卫生物品
技术领域
本发明涉及一种用于吸收体液的吸收性卫生物品,该物品包括可渗透液体的顶片、底层和设置在顶片与底层之间的吸收芯,所述顶片和底层由卷材制成。
背景技术
在一次性卫生物品领域,如一次性卫生巾、内裤衬垫、尿布、失禁防护件、失禁服装等一次性使用后丢弃的物品,将此类物品的环境影响降至最低是一个日益引起关注的问题。因此,希望使用最少的油基聚合物材料制造一次性卫生物品。
然而,传统使用的塑料材料具有功能优势,例如,因为它们是非吸收性的,并且提供了与佩戴者皮肤紧密接触的物品所需的干燥表面材料。
因此,本发明的目的是提供一种卫生吸收性物品,该物品具有非油基身体接触材料,且不会失去功能性。
另一个目的是提供一种对皮肤干燥且有效利用卫生吸收性物品的可用吸收能力的卫生吸收性物品。
发明内容
上述一个或多个目标可通过根据权利要求1的吸收性卫生物品实现。在从属权利要求、以下描述和附图中阐述了进一步的实施例。
本发明公开了一种用于吸收体液的吸收性卫生物品,包括可渗透液体的顶片、底层和设置在顶片与底层之间的吸收芯,所述顶片和底层由卷材制成。所述顶片由纤维素纤维幅构成,所述纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,所述纤维素纤维幅为泡沫成型的水刺缠结纤维幅。或者,吸收芯中的吸收层由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,吸收性纤维幅为泡沫成型的水刺缠结纤维幅。另一种选择是,顶片和吸收芯中的吸收层均由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,吸收性纤维幅为泡沫成型的水刺缠结的纤维幅。
在本文所公开的吸收性卫生物品中,可优选吸收芯中的至少吸收层由纤维素纤维幅构成,纤维素纤维幅中的纤维由包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维的纤维素纤维混合物构成,吸收性纤维幅是泡沫成型的、水刺缠结的纤维幅。吸收层优选地设置成与顶片直接接触。
吸收性卫生物品可以是用于吸收身体排泄物的任何有用类型的吸收性物品,包括尿布例如开放式尿布或裤型尿布、失禁服装、失禁防护罩、卫生巾、内裤衬垫、床防护件、座椅保护件等。本文所公开的吸收性卫生物品也可以是吸收性卫生裤型服装中的集成吸收性单元。
本文所公开的吸收性卫生物品中的顶片可由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,纤维素纤维幅为泡沫成型的水刺缠结纤维幅。
如本文所述由纤维素纤维幅构成的顶片的基重可在10-30gsm范围内。
吸收性卫生物品的面向用户的表面可以提供有图案,该图案是压花图案、压痕图案、印刷图案,或压花图案、压痕图案和印刷图案中的一种或多种的组合。
本文所公开的吸收性卫生物品可具有设置在顶片的面向用户的表面中的压花。压花用于局部压缩纤维素纤维幅,从而在压花区域内形成具有较小孔隙的致密结构。此类压花可用于进一步控制吸收性卫生物品中的液体分布。除了功能性压花之外还有或代替功能性压花,如本领域所知,可为顶片提供装饰性压花、功能性和/或装饰性印刷等。
可在由本文所公开的纤维素纤维幅构成的吸收芯层中提供功能性压花,以增强吸收芯层内的流体分布和流动控制。
除了如本文所述由纤维素纤维幅构成的顶片外,吸收芯中的吸收层也可由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,所述吸收性纤维幅为泡沫成型的水刺缠结纤维幅,其基重在30-150gsm范围内。吸收层可优选地设置成与顶片直接接触。
顶片和底层可在外围接头中相互接合,以封闭吸收芯,或者,顶片和底层可由围绕芯包裹的一单片液体渗透性覆盖材料制成。此外,可通过直接接合于吸收芯或设置在顶片与底层之间的另一组件来间接地接合顶片和底层。例如,如果顶片、底层和吸收芯全部均由卷材制成,则可采用顶片与底层的间接接合。例如,当用于意图放置在另一吸收性物品(例如尿布或失禁服装)中的液体渗透性顶片顶部的吸收性插入物中时,底层可以是液体渗透性的。总体上来说,底层可抵抗液体渗透或液体不渗透。底层可以是本领域已知的透气底层。也可优选底层来自可再生原材料。
适用于本文所公开的吸收性卫生物品中的吸收性纤维素纤维幅具有大比例的如下纤维:这些纤维与幅平面成一定角度定向,使得纤维至少部分地在幅的Z方向上延伸。如本文所用,幅的Z方向垂直于限定幅平面延伸的X方向和Y方向。Z方向在本文中也称为幅的厚度方向。纤维幅中纤维的Z方向性可能会受到幅作为水刺缠结幅的影响。水刺缠结涉及将成型的纤维幅暴露于高压水射流中,高压水射流将纤维移出纤维幅平面。可以在泡沫成型的幅的一侧或两侧上进行水刺缠结。也可在幅的湿法成型期间通过从两侧对幅进行脱水而增强幅中纤维的Z方向性,例如如WO 2018/065668 A1中所公开的那样。根据使用的成型线和脱水速度,根据WO 2018/065668 A1中的方法成型的幅可能具有高度的同侧性(likesidedmess),这在某些应用中可能是有利的。
本文使用的纤维素纤维幅是泡沫成型的幅。泡沫成型是一种湿法成型,涉及将纤维分散在含有水和表面活性剂的泡沫液体中。泡沫成型可形成体积大、孔隙率高的幅。
纤维素纤维幅可能已经被泡沫成型为单个一体幅,随后被水刺缠结。然而,纤维素纤维幅可包括两层或更多层泡沫成型的幅,其已被水刺缠结在一起以形成连贯的纤维素纤维幅。如果两层或更多层泡沫成型的幅构成最终的水刺缠结幅,则各层可能具有相同或不同的纤维成分。此外,各层可以具有相同或不同的基重,并且可以具有相同或不同的体积量。
本文所公开的吸收性卫生物品中使用的吸收性纤维幅中的纤维素纸浆纤维优选为木浆纤维,因为木浆纤维可以从现成的原材料经济地制造,在本领域是众所周知的,并且具有良好的吸收性和液体分布特性。纤维素纸浆纤维比再生纤维素纤维和/或天然纤维素短纤维短得多,再生纤维素纤维和/或天然纤维素短纤维形成用于捕获和容纳纤维素纸浆纤维的纤维网络。
本文所指的木浆纤维包括来自化学纸浆的纸浆纤维,例如牛皮浆、硫酸盐或亚硫酸盐、机械浆、热机械浆、化学机械浆和/或化学热机械浆(简称CTMP)。可以使用来自落叶(硬木)和针叶(软木)的纸浆。纤维素纸浆纤维也可能来自非木本植物,例如谷物秸秆、竹子、黄麻或剑麻。所述纤维或部分纤维可为可回收纤维,其可属于上述任何或所有类别。纤维可以具有自然的短纤维长度,例如棉花,或者可以被切割成所需的短纤维长度。
可添加诸如柔软剂(例如季铵化合物)、干强度剂或湿强度剂等添加剂,以促进纤维素纤维幅的制造或调整其性质。然而,对于纤维素纤维幅的一些实施例,吸收性纤维幅本身可能非常牢固,以至于不需要干强度剂或/或湿强度剂来提高强度。
由于本文所披露的吸收性纤维幅中使用的所有纤维均为纤维素来源,因此本文所披露的吸收性纤维幅由可再生原材料制成。
此外,如本文所公开的吸收性纤维幅具有类似纺织品的特征,这在许多用户情况下是期望的,例如,对于意图与用户皮肤紧密接触的卫生物品。由本文所公开的纤维素吸收性纤维幅制成的产品例如内裤衬垫可具有必需的强度特性,同时对使用者的皮肤柔软舒适。可在干燥和潮湿状态下都感觉到纤维素纤维幅类似纺织品的特性。
本文所公开的吸收性卫生物品中使用的纤维素纤维幅中的再生纤维素纤维和/或天然纤维素短纤维可以是长度在2-20mm范围内的短纤维,例如在5-15mm范围内,例如在5-12mm范围内,例如在6-10mm范围内。本文所公开的幅中使用的再生纤维素纤维和/或天然纤维素短纤维的纤维密度可以在0.3-3dtex的范围内,例如在0.5-2.4dtex的范围内,例如在0.8-2.0dtex的范围内。
再生纤维素纤维可以是粘胶纤维或lyocell纤维。
纤维素纤维混合物可由基于纤维素纤维混合物总重量的2-50%(按重量计)的再生纤维素纤维和/或天然纤维素短纤维组成,优选地,例如纤维素纤维混合物总重量的2-40%(按重量计),更优选地,纤维素纤维混合物总重量的5-25%(按重量计),最优选纤维素纤维混合物重量的10-20%。
由本文所公开的纤维素纤维幅制成的顶片可具有8-17cm3/g范围内的体积量。
吸收层,例如由本文所公开的纤维素纤维幅制成的吸收芯层,其体积量在8-10cm3/g范围内。
本文所公开的吸收性卫生物品可具有根据本文所公开的方法测量的小于1克的再湿量,例如小于0.8克的再湿量或小于0.7克的再湿量。
如根据本文公开的测试方法在三次测试液体浸泡后测量的,本文公开的吸收性卫生物品在纤维素纤维幅的机器方向上的液体扩散能力为75mm或更大。
本文所公开的吸收性卫生物品可在吸收性卫生物品的横向机器方向上具有30mm或更大的液体扩散能力(在第一次测试液体浸泡后测量得),以及45mm或更大的液体扩散能力(在两次测试液体浸泡后测量得),测量按照本文所公开的测试方法进行。
该方法中使用的样品的机器方向对应于吸收性卫生物品的长度方向,样品的横向机器方向对应于吸收性卫生物品的横向或宽度方向。
本文所公开的吸收性卫生物品中的吸收芯可包括超吸收性材料,例如纤维素基或淀粉基超吸收性材料。
适于在本文所公开的吸收性卫生物品中使用的超吸收性材料的示例为:明胶;褐藻酸盐;纤维素基聚合物,例如甲基纤维素、羟甲基纤维素、羧甲基纤维素、邻苯二甲酸醋酸纤维素等;淀粉基聚合物,如羧甲基淀粉;天然胶,如阿拉伯胶、刺槐豆胶、卡拉胶和黄原胶;果胶;由含酸基的单体形成的聚合物,例如聚(丙烯酸酯)(包括聚(丙烯酸)、聚(甲基丙烯酸)等)、聚(醚)、聚(丙烯酰胺)、聚(乙烯醇)、马来酸酐共聚物、聚(乙烯基磺酸盐)、水解丙烯腈接枝淀粉、丙烯酸接枝淀粉、聚(N-乙烯基吡咯烷酮)、聚(2-羟乙基丙烯酸酯),聚(2-甲基丙烯酸羟乙基酯)、聚(丙烯酸钠-丙烯酸共聚物)、聚(乙烯基磺酸);聚(环氧乙烷),环氧乙烷与聚酰胺、聚酯和聚氨酯的嵌段共聚物,以及上述的盐形式、混合物和共聚物。
附图说明
下文将通过非限制性示例并参考附图进一步解释本文所公开的卫生物品,其中:
图1示出内裤衬垫;
图2示出沿着直线II-II穿过图1中的内裤衬垫的横截面;
图3示出沿着直线III-III穿过图1中的内裤衬垫的可选横截面;和
图4示出沿着直线IV-IV穿过图1中的内裤衬垫的另一可选横截面。
具体实施方式
应当理解的是,这些附图是示意图,各个组件或特征(例如材料层)不一定按比例绘制。图中所示的内裤衬垫仅作为示例提供,不应被视为限制本文所公开的发明。具体而言,应当理解,形状和尺寸是本发明的非必要特征,并且可以在权利要求的范围内改变。在下文中,参照内裤衬垫描述所要求保护的吸收性卫生物品。如本文所述,所要求保护的发明适用于任何其他类型的吸收性卫生物品,所述卫生物品包括顶片、液体阻挡层和设置在所述顶片与液体阻挡层之间的吸收芯。本文所公开的吸收性卫生物品旨在至少部分放置在吸收性卫生物品使用者的胯部,用于吸收血液、阴道分泌物、尿液、粪便等。吸收性卫生物品包括卫生巾、儿童和成人尿布、失禁防护件等。
吸收性卫生物品1如图1和2所示是一种内裤衬垫,包括设置在吸收性卫生物品1表面上的液体渗透性顶片2,其在使用期间旨在面向使用者。液体渗透性顶片2由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,吸收性纤维幅为泡沫成型的水刺缠结纤维幅。
吸收性卫生物品1还包括设置在吸收性卫生物品1的表面上的液体阻挡层3,该表面在使用期间旨在背向使用者,在本文中也称为吸收性卫生物品1的面向服装的表面。液体阻挡层3优选是流体不可渗透的。然而,仅耐流体渗透的液体阻挡层材料尤其可用于本文所公开的吸收性卫生物品预计吸收相对少量体液的情况。液体阻挡层3可以是薄的、柔性的、液体不渗透的塑料膜,但是对于本文所公开的物品,也考虑液体不渗透的非织造材料、液体不渗透的泡沫和液体不渗透的层压板。液体阻挡层3可以是可透气的,这意味着空气和蒸汽可以穿过液体阻挡层。此外,液体阻挡层3可具有纺织材料(例如非织造布)的面向服装的外表面。此外,优选底层由可再生原材料制成。
吸收芯4设置在顶片2与液体阻挡层3之间。在内裤衬垫1中,如图2和3所示,吸收芯4显示为单个纤维素吸收层4’,其由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,吸收性纤维幅为泡沫成型的水刺缠结纤维幅。纤维素吸收层4’直接设置在顶片2内侧,并与顶片2直接接触和流体连通。
在需要更多吸收性的应用中,如本文所述,例如在更大的内裤衬垫、卫生巾、尿布、失禁保护件、失禁服装等中,吸收性卫生物品可包括进一步的吸收层和组件。
这种吸收性卫生物品的示例如图4所示,其中附加吸收层4”设置在纤维素吸收层4’的下方。
此类一个或多个附加吸收层可包括本文所述的超吸收性材料。超吸收性材料可以是颗粒形式,如本领域已知的超吸收性泡沫、超吸收性纤维等。超吸收性颗粒可与纤维素纤维(例如纤维素纸浆纤维)混合。
在内裤衬垫1中,如图2和4所示,在围绕吸收芯4的外围延伸的边缘密封件5中,顶片2和液体阻挡层3直接彼此接合。边缘密封件5形成在吸收芯4的外围边缘的横向外侧。可使用任何已知技术或适用于该目的的技术组合,例如胶合、热结合、超声波焊接或热压花,来实现顶片2与液体阻挡层3的接合。
如本文所述,在顶片2与液体阻挡层3之间的这种直接密封是所要求保护发明的可选特征。因此,顶片2和液体阻挡层3可以通过直接接合于吸收芯而间接地彼此接合,或者可以由围绕吸收芯包裹的单片材料形成。在图3所示的吸收性卫生物品中,所有的顶片2、液体阻挡层3和吸收芯4是同延的,共同限定吸收性卫生物品1的周边边缘6,吸收性卫生物品1的周边边缘6限定了吸收性卫生物品1的平面形状。
在图3所示的吸收性卫生物品1中,边缘密封件5连接顶片2、液体阻挡层3和吸收芯4全部。图3中的边缘密封件5是可通过加热和压花制成的压缩结合。
如需要,本文所公开的边缘密封件5可以是连续的或不连续的结合。
吸收性卫生物品1中的组件可通过常规方式例如建筑粘合剂、热结合、超声波结合、使用压花和压力的机械焊接等相互连接。可能并不必需要通过特殊结合方式将吸收性物品的内部组件相互结合。因此,通过摩擦力将这些组件保持在一起就足够了。
如图2-4所示,吸收性卫生物品1在吸收性卫生物品1的面向服装的表面5上具有紧固件8。紧固件8用于允许将吸收性卫生物品1紧固在一条内裤或一条卫生长裤的裆部,并且可以例如是本领域已知的粘合紧固件、摩擦紧固件或钩型紧固件。在包装和运输过程中,紧固件8可由释放衬(未示出)保护。在将吸收性卫生物品1施加于一条内裤的裆部之前,移除释放衬以露出紧固件8。紧固件8也可以由包装物保护,通常也称为“单包”,该包装物可释放并附接到紧固件8,并且在从包装物中取出吸收性卫生物品1的同时将其移除。紧固件8可以施加在液体阻挡层3的整个外表面上,或者可以仅施加在液体阻挡层3的外表面的一个或多个选定区域上。紧固件8是吸收性卫生物品的可选特征。
图1所示的吸收性卫生物品1具有多个线压花11的形式的压花图案,这些线压花11设置在顶片2中。压花11是本文所公开的吸收性卫生物品的可选特征,并且未在图2-4中的横截面图中示出。压花11可以从吸收性卫生物品1的外表面向下延伸到下面的吸收芯4中,从而使顶片2的纤维结构以及可选地吸收芯4也在压花区域内被压缩。线压花总体上有利于沿着线条的流体分布,并抵消垂直于压花的流体分布。
吸收性卫生物品1可选地或除了压花之外还包括功能性和/或外观增强印刷。图1所示的压花11是本文所公开的吸收性卫生物品的可选方案。还应理解,压花不限于图1所示的数量、形状或位置。此外,如果使用压花,它们可能是功能性的、外观增强的或功能性压花和外观增强压花的组合。
测试方法的示例和说明
可根据本文所述的方法对本文所公开的纤维素纤维幅的吸收性物品或隔离层进行测试。
样品制备
在测试之前,单个物品或单层幅样品应平放,并在23℃和50%相对湿度的稳定实验室环境中暴露24小时。所有后续测试都应在相同的环境中进行。
确定幅样品的基重和密度
将幅样品称重至小数点后三位。然后确定样品的面积,并通过将样品重量除以样品面积来获得基重。以g/m2(gsm)为单位报告基重。
在0.5kPa的压力下测量幅厚度。合适的测厚仪的精度应为0.01mm。由50x50mm的正方形支脚施加压力。将支脚轻轻放在样品上,5秒后读取厚度值。
通过将样品体积除以样品重量得到体积量,并应以单位cm3/g报告。
密度是通过将样品重量除以样品体积得到的,应以单位kg/m3报告。
从十个代表性样本的测量中报告平均值。
确定扩散距离和再湿量
测试时使用符合法国标准AFNOR Q34-018的人工月经液(AMF)。
对于扩散和再湿量确定,样品应平放在实验室工作台上。折叠的吸收性物品被展开,并小心地展平。如果单独测试纤维幅,应将纤维幅切割或冲压成50x150mm的矩形。样品的长度方向应与幅的机器方向(MD)一致。应在纤维幅下方放置一层光滑、不透液的聚乙烯薄膜。
确定样品的中心点(纵向中心线与横向中心线交叉的点)。AMF通过一根管子(内径约3mm)注入,管子与自动分配器相连。管孔的位置垂直于中心点定位,与样品表面的距离约为5mm。
以15ml/min的速率向样品注入三剂1.0ml的AMF(即总共3.0ml)。当一剂已被吸收(即样品表面上不再有自由流体时),秒表开始计时,15分钟后注入下一剂。
每剂吸收5秒后测量扩散长度。沿着样品的纵向和横向中心线放置直尺,并确定纤维幅(或物品顶层)中湿区的延伸。忽略可能沿着各自的中心线在侧向的侧区域(例如在凹槽或致密结合图案中)扩散更长的AMF。
在吸收第三剂(最后一剂)15分钟后测量再湿量。将五张预称重过的滤纸堆叠(90x120mm,每张440g/m2,来自Munktell Ahlstrom的167质量滤纸或同等滤纸)居中地放在样品顶部上。将底部尺寸为90x120mm的5.5kg重物(施加5kPa压力)轻轻放在堆叠的顶部上。15秒后,移除重物,称量滤纸,并测定AMF再湿量。
从十个代表性样本的测量中报告平均值。
测试样品
S-1:23gsm聚丙烯纺粘非织造布的顶片,其体积量为10cm3/g,以及由140gsm气流成网纸浆纤维形成的吸收芯层,其体积量为9.8cm3/g。
S-2:由泡沫成型的水刺缠结纤维素纤维幅材料制成的顶片,其基重为20gsm,体积量为11.8cm3/g,以及由140gsm气流成网纸浆纤维形成的吸收芯层,其体积量为9.7cm3/g。
S-3:23gsm聚丙烯纺粘非织造布的顶片,其体积量为9.9cm3/g,以及由泡沫成型的水刺缠结纤维素纤维幅形成的吸收芯层,其基重为100gsm,体积为量6.4cm3/g。
S-4:23gsm聚丙烯纺粘非织造布的顶片,其体积量为10cm3/g,以及由泡沫成型的水刺缠结纤维素纤维幅形成的吸收芯层,其基重为150gsm,体积量为5.9cm3/g。
S-5:由泡沫成型的水刺缠结纤维素纤维幅材料制成的顶片,其基重为20gsm,体积量为15cm3/g,以及由泡沫成型的水刺缠结纤维素纤维幅制成的吸收芯层,其基重为100gsm,体积量为6.7cm3/g。
S-6:由泡沫成型的水刺缠结纤维素纤维幅材料制成的顶片,其基重为20gsm,体积量为16.6cm3/g,以及由泡沫成型的水刺缠结纤维素纤维幅形成的吸收芯层,其基重为150gsm,体积量为5.6cm3/g。
S-7:由23gsm干绉纸制成的顶片,其体积量为8.1cm3/g,以及由140gsm气流成网纸浆纤维形成的吸收芯层,其体积量为10.0cm3/g。
S-8:由35gsm的philic棉水刺非织造布制成的顶片,其体积量为18.4cm3/g,以及由140gsm的气流成网纸浆纤维形成的吸收芯层,体积量为10.1cm3/g。
样品S-2至S-6中使用的纤维素纤维幅均以与WO 2018/065668 A1中公开的泡沫成型工艺相同的方式生产。所有样品的纤维成分均相同,分别为15%粘胶、商用1.7dtex 10mm达努菲尔、凯尔海姆和85%未精制漂白软木硫酸盐浆。所有样品在相同的设备上、在相当的条件下进行水刺缠结。
测试结果如表1所列。
Figure BDA0003663326900000111
**CD/宽度方向上50mm的液体扩散值表示液体已沿样品的宽度方向一直扩散至样品的纵向侧边缘。
从表1中可看出,所有样品S-3至S-6(其包含本文公开的泡沫成型的水刺缠结的纤维素纤维幅材料作为芯层)具有优异的再湿和液体扩散性能。要注意的是,具有常规亲水性顶片、棉纸顶片或常规气流成网芯层的样品S-1、S-2、S7和S-8的再湿量比其他样品高得多。

Claims (18)

1.一种用于吸收体液的吸收性卫生物品(1),所述物品包括可渗透液体的顶片(2)、底层(3)和设置在所述顶片(2)与底层(3)之间的吸收芯(4),所述顶片(2)和底层(3)由卷材制成,其特征在于,所述顶片(2)由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,所述混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,所述纤维素纤维幅是泡沫成型的水刺缠结纤维幅,和/或,吸收芯(4)中的吸收层(4’)由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,所述混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,吸收性纤维幅为泡沫成型的水刺缠结纤维幅。
2.一种用于吸收体液的吸收性卫生物品(1),所述物品包括可渗透液体的顶片(2)、底层(3)和设置在所述顶片(2)与底层(3)之间的吸收芯(4),所述顶片(2)和底层(3)由卷材制成,其特征在于,所述顶片(2)由纤维素纤维幅构成,纤维素纤维幅中的纤维由纤维素纤维的混合物构成,所述混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,所述纤维素纤维幅为泡沫成型的水刺缠结纤维幅。
3.根据权利要求2所述的吸收性卫生物品(1),其中所述顶片(2)的基重在10-30gsm范围内。
4.根据权利要求2或3所述的吸收性卫生物品(1),其中,所述吸收芯(4)中的吸收层(4’)由纤维素纤维幅构成,所述纤维素纤维幅中的纤维由纤维素纤维的混合物构成,该混合物包括再生纤维素纤维和/或天然纤维素短纤维以及纤维素纸浆纤维,所述吸收性纤维幅为泡沫成型的水刺缠结纤维幅,所述吸收层(4’)的基重在30-150gsm范围内。
5.根据权利要求4所述的吸收性卫生物品(1),其中所述吸收层(4’)布置成与所述顶片(2)直接接触。
6.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中所述再生纤维素纤维和/或天然纤维素短纤维是长度在2-20mm范围内的短纤维,例如在5-15mm范围内,例如在5-12mm范围内,例如在6-10mm的范围内,且纤维密度在0.3-3dtex的范围内,例如在0.5-2.4dtex的范围内,例如在0.8-2.0dtex的范围内。
7.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中所述纤维素纤维的混合物是纤维素纸浆纤维和粘胶纤维的混合物。
8.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中,纤维素纤维混合物由基于纤维素纤维混合物的总重量的2-50%重量的再生纤维素纤维和/或天然纤维素短纤维组成,例如按重量计为纤维素纤维混合物总重量的2-40%,更多例如纤维素纤维混合物总重量的5-25%,最多例如纤维素纤维混合物重量的10-20%。
9.根据权利要求2-8中任一项所述的吸收性卫生物品(1),其中所述顶片(2)的体积量在8-17cm3/g范围内。
10.根据权利要求3-9中任一项所述的吸收性卫生物品(1),其中所述吸收层(4’)的体积量在8-10cm3/g范围内。
11.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中根据本文所公开的方法测量的所述物品的再湿量小于1克,例如再湿量小于0.8克或再湿量小于0.7克。
12.根据权利要求2-11中任一项所述的吸收性卫生物品(1),其中所述吸收性卫生物品(1)在纤维素纤维幅的机器方向上具有75mm或更大的液体扩散能力,所述扩散能力是根据本文所公开的测试方法在三次测试液体浸泡后测得的。
13.根据权利要求2-12中任一项所述的吸收性卫生物品(1),其中所述吸收性卫生物品(1)在所述吸收性卫生物品(1)的横向机器方向上的液体扩散能力为在第一次测试液体浸泡后测量得的30mm或以上,以及在两次测试液体浸泡后测量得的45mm或以上,所述测量是根据本文公开的测试方法所进行的。
14.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中所述吸收芯(4)包括超吸收性材料,例如纤维素基或淀粉基超吸收性材料。
15.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中所述底层(3)由可再生原材料构成。
16.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中,所述吸收性卫生物品(1)是内裤衬垫、失禁防护件、卫生巾或吸收性插入物。
17.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中所述吸收性卫生物品(1)是尿布。
18.根据前述权利要求中任一项所述的吸收性卫生物品(1),其中,所述吸收性卫生物品(1)幅的面向用户的表面设有图案,所述图案为压花图案、压痕图案、印刷图案,或压花图案、压痕图案和印刷图案中的一种或多种的组合。
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CN110191692A (zh) * 2016-11-22 2019-08-30 萨阿迪公司 具有天然纤维的吸收性制品

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