WO2018196714A1 - 卫生用品的吸水芯体及其制备方法 - Google Patents
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Abstract
一种水分扩散性好、吸收率高的卫生用品的吸水芯体及其制备方法。吸水芯体包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布或无尘纸,中间层为无纺布或膨松棉。通过在顶层和中间层之间设置SAP和木浆混合层来增加水分的扩散能力,木浆能快速地将水分扩散开来,扩散后的水分被SAP吸收,吸收快且SAP利用率高。中间层正面和背面分别设置不同厚度的SAP层,吸水芯体可以分层次吸水,避免所有SAP在同一层,局部吸水过多。制备方法包括热压,热压可将中间层与木浆粉热粘合,避免木浆粉走位。制备方法中涉及的压辊上设有网状凸起,网状凸起可将底层与中间层之间、顶层与中间层之间压层多个网格状空间,限制SAP的移动。
Description
本发明涉及卫生用品领域,尤其是涉及的是卫生用品的吸水芯体及其制备方法。
护理垫和纸尿裤作为常用的卫生用品,一般里面装有吸水用的芯体,吸水芯体一般为无纺布包着SAP颗粒组成。SAP为高分子吸水树脂,能吸收自身重量几倍、数百倍的水分。但普通的吸水芯体水分在其上扩散较慢,水分吸收速度慢,经常只有局部吸收很多水分,造成吸水芯体整体利用率低且容易局部鼓胀。
发明内容
本发明的目的在于克服上述不足,提供一种水分扩散性好、吸收率高的卫生用品的吸水芯体及其制备方法。
为实现上述目的,本发明的技术解决方案是:卫生用品的吸水芯体,包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布或无尘纸,中间层为无纺布或膨松棉。
优选的,顶层与混合层之间设有湿强纸,底层与SAP层之间设有湿强纸。
卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10-50克/平方米;木浆纤维可以由木浆通过解纤获得;
(2)热压:将铺上木浆纤维的中间层送入热压辊中进行热压,热压温度为80-140℃;
(3)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为10-200克/平方米,SAP粉的大小为40-100目;
(4)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1-4克/平方米,将顶层的背面贴在中间层的正面上形成半成品,将半成品送入压辊中将顶层和中间层压贴合;
(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为50-250克/平方米;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1-4克/平方米,将底层的背面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
优选的,步骤(4)和步骤(6)的压辊上设有网状凸起。
一种卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10-50克/平方米;
(2)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为50-250克/平方米,SAP粉的大小为40-100目;
(3)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1-3克/平方米,将克重为13-25克/平方米的湿强纸贴在顶层的背面,在顶层背面的湿强纸上喷热熔胶,喷胶量为2-5克/平方米,将顶层的湿强纸的一面贴在中间层的正面上形成半成品;
(4)热压:将半成品送入热压辊中进行热压,热压温度为80-140℃;
(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为50-250克/平方米;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1-3克/平方米,将克重为13-25克/平方米的湿强纸贴在底层的背面,在底层的背面的湿强纸上喷热熔胶,喷胶量为2-5克/平方米,将底层的湿强纸的面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
通过采用上述的技术方案,本发明的有益效果是:本发明的通过在顶层和中间层之间设置SAP和木浆纤维的混合层来增加水分的扩散能力,木浆纤维能快速地将水分扩散开来,扩散后的水分被SAP吸收,吸收快且SAP利用率高。中间层正面和背面分别设置不同厚度的SAP层,吸水芯体可以分层次吸水,避免所有SAP在同一层,局部吸水过多。热压可将中间层与木浆粉热粘合,避免木浆粉走位,压辊的网状凸起可将底层与中间层之间、顶层与中间层之间压成多个网格状空间,限制SAP粉的移动集聚。湿强纸可以增加整体的韧性,减小吸水芯体吸水后的变形量。
无。
以下具体实施例来进一步说明本发明。
实施例1:
本发明的卫生用品的吸水芯体,包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布,中间层为膨松棉。
卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层膨松棉的正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10克/平方米;木浆纤维可以由木浆通过解纤获得;
(2)热压:将铺上木浆纤维的膨松棉送入热压辊中进行热压,热压温度为80℃;使膨松棉和木浆纤维进行热粘合;
(3)上第一层SAP粉:在膨松棉的正面均匀撒上SAP粉,撒粉量为10克/平方米,SAP粉的大小为40目;
(4)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1克/平方米,将顶层的背面贴在膨松棉的正面上形成半成品,将半成品送入压辊中将顶层和中间层压贴合,压辊上设有网状凸起;
(5)上第二层SAP粉:将半成品翻转,膨松棉的背面朝上,在膨松棉的背面均匀撒上SAP粉,撒粉量为50克/平方米,SAP粉的大小为40目;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1克/平方米,将底层的背面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品,压辊上设有网状凸起。
实施例2:
本发明的卫生用品的吸水芯体,包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无尘纸,中间层为无纺布。
卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为50克/平方米;木浆纤维可以由木浆通过解纤获得;
(2)热压:将铺上木浆纤维的中间层送入热压辊中进行热压,热压温度为140℃;使中间层和木浆纤维进行热粘合;
(3)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为200克/平方米,SAP粉的大小为100目;
(4)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为4克/平方米,将顶层的背面贴在中间层的正面上形成半成品,将半成品送入压辊中将顶层和中间层压贴合,压辊上设有网状凸起;
(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP 粉,撒粉量为250克/平方米,SAP粉的大小为100目;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为4克/平方米,将底层的背面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品,压辊上设有网状凸起。
实施例3:
卫生用品的吸水芯体,包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布或无尘纸,中间层为无纺布或膨松棉,顶层与混合层之间设有湿强纸,底层与SAP层之间设有湿强纸。
上述卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10克/平方米;
(2)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为50克/平方米,SAP粉的大小为40目;
(3)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1克/平方米,将克重为13克/平方米的湿强纸贴在顶层的背面,在顶层背面的湿强纸上喷热熔胶,喷胶量为2克/平方米,将顶层的湿强纸的一面贴在中间层的正面上形成半成品;
(4)热压:将半成品送入热压辊中进行热压,热压温度为80℃;
(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为50克/平方米;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1克/平方米,将克重为13克/平方米的湿强纸贴在底层的背面,在底层的背面的湿强纸上喷热熔胶,喷胶量为2克/平方米,将底层的湿强纸的面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
实施例4:
卫生用品的吸水芯体,包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布或无尘纸,中间层为无纺布或膨松棉,顶层与混合层之间设有湿强纸,底层与SAP层之间设有湿强纸。
上述卫生用品的吸水芯体的制备方法,包括以下步骤:
(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为50克/平方米;
(2)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为250克/平方米,SAP粉的大小为100目;
(3)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为3克/平方米,将克重为25克/平方米的湿强纸贴在顶层的背面,在顶层背面的湿强纸上喷热熔胶,喷胶量为5克/平方米,将顶层的湿强纸的一面贴在中间层的正面上形成半成品;
(4)热压:将半成品送入热压辊中进行热压,热压温度为140℃;
(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为250克/平方米;
(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为3克/平方米,将克重为25克/平方米的湿强纸贴在底层的背面,在底层的背面的湿强纸上喷热熔胶,喷胶量为5克/平方米,将底层的湿强纸的面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
以上所述的,仅为本发明的较佳实施例而已,不能限定本发明实施的范围,凡是依本发明申请专利范围所作的均等变化与装饰,皆应仍属于本发明涵盖的范围内。
Claims (5)
- 卫生用品的吸水芯体,其特征在于:包括依次设置的顶层、中间层、底层,顶层和中间层之间设有SAP与木浆纤维混合层,中间层和底层之间设有SAP层,顶层和底层为无纺布或无尘纸,中间层为无纺布或膨松棉。
- 一种根据权利要求1所述的卫生用品的吸水芯体,其特征在于:顶层与混合层之间设有湿强纸,底层与SAP层之间设有湿强纸。
- 一种根据权利要求1所述的卫生用品的吸水芯体的制备方法,包括以下步骤:(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10-50克/平方米;(2)热压:将铺上木浆纤维的中间层送入热压辊中进行热压,热压温度为80-140℃;(3)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为10-200克/平方米,SAP粉的大小为40-100目;(4)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1-4克/平方米,将顶层的背面贴在中间层的正面上形成半成品,将半成品送入压辊中将顶层和中间层压贴合;(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为50-250克/平方米;(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1-4克/平方米,将底层的背面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
- 根据权利要求3所述的卫生用品的吸水芯体的制备方法,其特征在于:步骤(4)和步骤(6)的压辊上设有网状凸起。
- 一种根据权利要求2所述的卫生用品的吸水芯体的制备方法,包括以下步骤:(1)上木浆纤维:将中间层正面朝上铺在负压箱的负压输送带上,往中间层的正面均匀铺上木浆纤维,木浆纤维的加入量为10-50克/平方米;(2)上第一层SAP粉:在中间层的正面均匀撒上SAP粉,撒粉量为50-250克/平方米,SAP粉的大小为40-100目;(3)贴顶层:在顶层的背面喷一层热熔胶,喷胶量为1-3克/平方米,将克重为13-25克/平方米的湿强纸贴在顶层的背面,在顶层背面的湿强纸上喷热熔胶,喷胶量为2-5克/平方米,将顶层的湿强纸的一面贴在中间层的正面上形成半成品;(4)热压:将半成品送入热压辊中进行热压,热压温度为80-140℃;(5)上第二层SAP粉:将半成品翻转,中间层的背面朝上,在中间层的背面均匀撒上SAP粉,撒粉量为50-250克/平方米;(6)贴底层:在底层的背面喷一层热熔胶,喷胶量为1-3克/平方米,将克重为13-25克/平方米的湿强纸贴在底层的背面,在底层的背面的湿强纸上喷热熔胶,喷胶量为2-5克/平方米,将底层的湿强纸的面贴在中间层的背面上形成复合体,将复合体送入压辊中使底层和中间层压贴合,形成成品。
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