CN208447937U - 具有导流效果的复合吸收芯体以及包括该芯体的吸收制品 - Google Patents

具有导流效果的复合吸收芯体以及包括该芯体的吸收制品 Download PDF

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CN208447937U
CN208447937U CN201721129802.8U CN201721129802U CN208447937U CN 208447937 U CN208447937 U CN 208447937U CN 201721129802 U CN201721129802 U CN 201721129802U CN 208447937 U CN208447937 U CN 208447937U
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composite absorption
absorption core
water absorption
core
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荣敏杰
田云
许永升
于庆华
荣帅帅
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Nuo Chen Co.,Ltd.
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Shandong Nuoer Biological Technology Co Ltd
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Abstract

本实用新型公开了一种具有导流效果的复合吸收芯体以及包括该芯体的吸收制品。所述复合吸收芯体为五层结构，自上而下分别为表层、上吸水层、中间吸收层、下吸水层和底层；所述下吸水层在整幅复合吸收芯体宽度的中部设有导液通道。本实用新型还涉及包括所述复合吸收芯体的吸收制品。本实用新型的复合吸收芯体和包括该复合吸收新体的吸收制品具有干爽性好，不起坨，不断层等优点，并且由于具有导流作用，所以液体下渗速度快，扩散性能也优于一般复合吸收芯体。

Description

具有导流效果的复合吸收芯体以及包括该芯体的吸收制品
技术领域
本实用新型涉及复合吸收芯体领域，具体涉及一种具有导流效果的复合吸收芯体以及包括该复合吸收芯体的吸收制品。
背景技术
目前婴儿纸尿裤等卫生用品得到了广泛的应用，包括复合芯体的这类纸尿裤由于超薄，不断层，因此市场份额也在不断扩大，但是现有技术中的包括复合吸收芯体的吸收制品例如纸尿裤还存在如下缺陷：(1)现有的复合吸收芯体类型婴儿纸尿裤多次吸收速度慢，有漏尿现象发生；(2)现有的复合吸收芯体类型纸尿裤在吸收尿液后，由于是多层无尘纸和无纺布组成，中间吸收层在吸收尿液后膨胀会使复合吸收芯体变硬。
实用新型内容
(一)要解决的技术问题
本实用新型要解决的技术问题是解决复合吸收芯体吸收速度慢、吸液后膨胀变硬等问题。
(二)技术方案
为了解决上述技术问题，本实用新型提供了一种具有导流效果的复合吸收芯体。
本实用新型还提供了一种包括所述复合吸收芯体的吸收制品。
(三)有益效果
与现有技术相比较，采用本实用新型技术的复合吸收芯体具有如下优点：干爽性好，不起坨，不断层，因为具有导流作用，所以液体下渗速度快，扩散性能也优于一般复合吸收芯体，可以应用于各种吸收制品，尤其是卫生用品，尤其是一次性卫生用品，例如卫生巾或者纸尿裤如超薄的婴儿纸尿裤、婴儿纸尿片等。
附图说明
图1是本实用新型的复合吸收芯体的一个实施例的结构示意图，其中复合吸收芯体为吸液前状态，并且导液通道的位置仅仅隐约可见。
图2是图1所示的复合吸收芯体的剖面图。
图3是本实用新型的复合吸收芯体的另一个实施例的结构示意图，其中复合吸收芯体为吸液前状态，但是导液通道的宽度比图1中的复合吸收芯体的宽度大。
图4是图1的复合吸收芯体吸液后高分子吸水树脂膨胀从而形成非常明显的导液通道。
图5是图4中的复合吸收芯体的剖面图。
图6是本实用新型的复合吸收芯体的又一个实施例的剖面图，仅有一个由高分子吸水树脂形成的吸水层，并且没有中间吸收层。
图7是图6所述的复合吸收芯体吸液后的结构示意图。
图8本实用新型的复合吸收芯体的又一个实施例的剖面图，有由高分子吸水树脂形成的上吸水层和下吸水层，但是没有中间吸收层。
图9是图8所述的复合吸收芯体吸液后的结构示意图。
图10至15是分别放有平行于底层长度方向的一个长条形挡板、垂直于底层长度的一个长条形挡板、垂直于底层长度的多个(3个)长条形挡板、S行挡板、Z挡板和井字形挡板并且喷敷热熔结构胶的底层上表面的示意图。
图中：1：表层；2：上吸水层；3：中间吸收层；4：下吸水层；5：底层；6：导液通道；7：空白区(没有分布高分子吸水树脂的与导液通道对应的区域)。
具体实施方式
为使本实用新型实施例的目的、技术方案和优点更加清楚，下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
参照图1，其中示出了本实用新型的一种具有导流效果的复合吸收芯体，该复合吸收芯体为五层结构，自上而下分别为表层1、上吸水层2、中间吸收层3、下吸水层4和底层5。所述下吸水层4在整幅复合吸收芯体宽度的中部设有导液通道6。
所述复合吸收芯体的整幅宽度为8-12cm，所述下吸水层4在整幅复合吸收芯体宽度的中部设有例如0.5-4cm宽的导液通道6。导液通道的宽度可以根据需要设计，可以相对较小一些(如图2所示)，也可以稍大一些(如图3所示)。
图1是本实用新型的复合吸收芯体的一个实施例的结构示意图，其中复合吸收芯体为吸液前状态，并且导液通道的位置仅仅隐约可见。
图2是图1所示的复合吸收芯体的剖面图；图3是本实用新型的复合吸收芯体的另一个实施例的结构示意图，其中复合吸收芯体为吸液前状态，但是导液通道的宽度比图1中的复合吸收芯体的宽度大；图4是图1的复合吸收芯体吸液后高分子吸水树脂膨胀从而形成非常明显的导液通道；图5是图4中的复合吸收芯体的剖面图。
参照图2，图2是图1所示的复合吸收芯体的剖面图。由图2中可以看出，在吸水膨胀前，复合吸收芯体在导液通道6的横截面积很小，复合吸收芯体在导液通道6所在的位置处的厚度与相邻位置(参见图1至3)的厚度差很小，为毫米级别，相当于数个或数十个高分子吸水树脂颗粒膨胀前的直径之和，不会影响复合吸收芯体或包括复合吸收芯体的吸收制品的包装和美观。当由高分子树脂构成的吸水层吸水膨胀时，导液通道位置处由于没有分布高分子吸水树脂，而旁边的高分子吸水树脂吸液膨胀，因此形成了通道横截面积显著增大从而起到显著的导流效果的导液通道(参照图4和图5)。
图6是本实用新型的复合吸收芯体的又一个实施例的剖面图，仅有一个由高分子吸水树脂形成的吸水层，并且没有中间吸收层。这样的复合吸收芯体在吸液后同样能够形成大横截面积的导液通道(如图7所示)。
图8本实用新型的复合吸收芯体的又一个实施例的剖面图，有由高分子吸水树脂形成的上吸水层和下吸水层，但是没有中间吸收层。这样的复合吸收芯体在吸液后同样能够形成大横截面积的导液通道(如图9所示)。
图10至15是分别放有平行于底层长度方向的一个长条形挡板、垂直于底层长度的一个长条形挡板、垂直于底层长度的多个(3个)长条形挡板、S行挡板、Z挡板和井字形挡板并且喷敷热熔结构胶的底层上表面的示意图。
本实用新型对各层使用的材料没有特别限制，可以使用各种已知的材料。例如，所述表层1和/或所述底层5可以为平方克重10-50g的纺粘无纺布或无尘纸。所述上吸水层2可以为20-120目的高分子吸水树脂，所述下吸水层4为20-120目的高分子吸水树脂。所述中间吸收层3可以为平方克重在35-50g的蓬松无纺布。
本实用新型对所述导液通道6的形状没有特别的限制，只要能够让吸收的液体更快速地扩散即可。例如，所述导液通道6的形状可以为长条状、Z形状、S形状或井字形。
在一些具体的实施方式中，本实用新型所述的具有导流效果的复合吸收芯体可以通过包括如下步骤的方法制备：
1)在底层的上侧面底层宽度中间位置沿其长度放置1-4cm宽的长条挡板(在此仅以长条状导液通道为例，该挡板可以为与欲形成导液通道的形状一致的挡板)，然后用喷胶机喷敷热熔结构胶层；
2)在喷敷热熔结构胶的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可。
下文将通过实施例的方式对本实用新型进行进一步的说明，但是本实用新型的保护范围不限于实施例。
实施例1
表层采用宽度为9cm、克重10g/m2的无尘纸，上吸水层采用克重140g/m2、20目的高分子吸水树脂，中间吸收层采用克重35g/m2的热风蓬松无纺布，下吸水层采用克重140g/m2、40目的高分子吸水树脂，底层采用宽度为9cm、克重10g/m2的无尘纸；制备步骤为：
1)在底层的上侧面底层宽度中部沿其长度放置1cm宽的长条挡板，然后用喷胶机喷敷0.5g/m2的热熔结构胶层；
2)在喷敷热熔结构胶层的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶层并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可得到具有导流效果的复合吸收芯体。
实施例2
表层采用宽度为10cm、克重30g/m2的无尘纸，上吸水层采用克重140g/m2、25目的高分子吸水树脂，中间吸收层采用克重45g/m2的热风蓬松无纺布，下吸水层采用克重140g/m2、80目的高分子吸水树脂，底层采用宽度为10cm、克重30g/m2的无尘纸；制备步骤为：1)在底层的上侧面底层宽度中部沿其长度放置2.5cm宽的长条挡板，然后用喷胶机喷敷1g/m2的热熔结构胶层；
2)在喷敷热熔结构胶层的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶层并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可得到具有导流效果的复合吸收芯体。
实施例3
表层采用宽度为11cm、克重50g/m2的无尘纸，上吸水层采用克重140g/m2、32目的高分子吸水树脂，中间吸收层采用克重50g/m2的热风蓬松无纺布，下吸水层采用克重140g/m2、120目的高分子吸水树脂，底层采用宽度为11cm、克重50g/m2的无尘纸；制备步骤为：
1)在底层的上侧面底层宽度中部沿其长度放置4cm宽的长条挡板，然后用喷胶机喷敷1.5g/m2的热熔结构胶层；
2)在喷敷热熔结构胶层的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶层并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可得到具有导流效果的复合吸收芯体。
实施例4
表层采用宽度为12cm、克重20g/m2的无尘纸，上吸水层采用克重140g/m2、34目的高分子吸水树脂，中间吸收层采用克重38g/m2的热风蓬松无纺布，下吸水层采用克重140g/m2、120目的高分子吸水树脂，底层采用宽度为12cm、克重20g/m2的无尘纸；制备步骤为：1)在底层的上侧面底层宽度中部沿放置3cm宽Z形状的挡板，然后用喷胶机喷敷1.8g/m2的热熔结构胶层；
2)在喷敷热熔结构胶层的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶层并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可得到具有导流效果的复合吸收芯体。
实施例5
表层采用宽度为8cm、克重30g/m2的无尘纸，上吸水层采用克重110g/m2、33目的高分子吸水树脂，中间吸收层采用克重38g/m2的热风蓬松无纺布，下吸水层采用克重140g/m2、108目的高分子吸水树脂，底层采用宽度为12cm、克重20g/m2的无尘纸；制备步骤为：
1)在底层的上侧面底层宽度中部沿放置2cm宽S形状的挡板，然后用喷胶机喷敷1.6g/m2的热熔结构胶层；
2)在喷敷热熔结构胶层的底层上侧面上洒上下吸水层，再在下吸水层上部敷设中间吸收层；
3)在表层下侧面上用喷胶机喷敷热熔结构胶层并洒上上吸水层；
4)将步骤3)的上吸水层侧面向下覆盖在步骤2)的中间吸收层上部，取出长条挡板压实后即可得到具有导流效果的复合吸收芯体。
上述实施例中，放置长条挡板，使底层上部中间位置留有空隙的位置没有洒下下吸水层。在吸收芯体吸收液体时，构成所述上吸收层和所述吸收层的高分子吸水树脂膨胀，从而在没有洒下下吸水层的位置处形成导液通道6，由此可以使液体渗漏时间缩短，并且较好地提高了复合吸收芯体的扩散长度。
将上述实施例1和2切割成38X10cm规格，测试本实用新型的复合吸收芯体：
测试方法为本实用新型的复合吸收芯体中间放上不锈钢圆环(内径50mm，外径为60mm，重量为320g，圆筒高度为5cm)，每次加入生理盐水80ml，间隔10分钟，共加液体三次；第30分钟测试返渗(加压砝码直径为10cm，重量为12kg，滤纸为中性中速滤纸)。
下表为对比试验结果：
注：条质量表示测试所用的每条芯体的质量(g)。
通过以上数据可以看出，带导液通道的本实用新型的复合吸收芯体在吸收速度和返渗方面有明显优势。
采用本实用新型方法制备的复合吸收芯体具有如下优点：干爽性好，不起坨，不断层，因为具有导流作用，所以液体下渗速度快，扩散性能也优于一般复合吸收芯体。可以应用于各种吸收制品，例如卫生用品如卫生巾偶纸尿裤，特别是超薄的婴儿纸尿裤、婴儿纸尿片等。

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1.一种具有导流效果的复合吸收芯体，其特征在于，所述复合吸收芯体为五层结构，自上而下分别为表层、上吸水层、中间吸收层、下吸水层和底层；所述下吸水层在整幅复合吸收芯体宽度的中部设有导液通道。
2.根据权利要求1所述的复合吸收芯体，其特征在于，所述复合吸收芯体整幅宽度为8-12cm；和/或所述导液通道的宽度为0.5-4cm。
3.根据权利要求1所述的复合吸收芯体，其特征在于，所述上吸水层通过热熔结构胶层固定在所述表层的下侧面；和/或所述下吸水层通过热熔结构胶层固定在所述底层的上侧面。
4.根据权利要求1所述的复合吸收芯体，其特征在于，所述表层和/或底层为平方克重10-50g的纺粘无纺布或无尘纸；和/或所述中间吸收层为平方克重在35-50g的蓬松无纺布。
5.根据权利要求1所述的复合吸收芯体，其特征在于，所述上吸水层为20-120目的高分子吸水树脂，和/或所述下吸水层为20-120目的高分子吸水树脂。
6.根据权利要求5所述的复合吸收芯体，其特征在于，所述导液通道通过在底层上对应于该导液通道的位置处不分布高分子吸水树脂来形成。
7.根据权利要求1所述的复合吸收芯体，其特征在于，所述导液通道为长条状、Z形状、S形状或井字形。
8.一种吸收制品，其特征在于，所述吸收制品包括根据权利要求1至7中任一项所述的复合吸收芯体。
9.根据权利要求8所述的吸收制品，其特征在于，所述吸收制品为一次性卫生用品。
10.根据权利要求9所述的吸收制品，其特征在于，所述一次性卫生用品为卫生巾或纸尿裤。
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