CN110755207A - 尿不湿 - Google Patents
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Abstract
本发明涉及一种尿不湿,所述尿不湿包括底布层以及依次层叠设置于所述底布层的锁水层、吸水层和表面包覆层,所述吸水层为竹浆纸包裹第一高吸水性树脂和竹浆绒毛浆的材料层,所述锁水层为竹纤维布包裹第二高吸水性树脂和竹浆绒毛浆的材料层。本发明的尿不湿通过吸水层和锁水层的协同作用,尿不湿可以快速吸收并锁住尿液,增强了尿不湿的瞬间吸收尿液和锁住尿液的效果,从而可以使尿液快速离开使用者的皮肤以及尿不湿的表面包覆层,保持使用者的皮肤干爽,进而提高使用舒适度。
Description
技术领域
本发明涉及日用品领域,特别是涉及尿不湿。
背景技术
尿不湿具有使用简单、防侧漏、防渗出等优点,逐渐取代尿布成为不可或缺的日用品,目前主要分为幼儿专用尿不湿和成人专用尿不湿两种。尿不湿的核心在于吸收芯层,吸收芯层主要用于俘获并快速吸收尿液、分散尿液以及通过毛细作用把尿液扩散到整个芯层中,最终吸收并储存尿液。但是,传统的尿不湿的吸收芯层主要是由纯木浆(绒毛浆)和高吸水树脂(SAP)构成的层状结构,不能兼顾快速吸收尿液和锁住尿液的效果。
发明内容
基于此,有必要针对上述问题,提供一种尿不湿,所述尿不湿可以快速吸收尿液并锁住尿液,而且更加卫生、环保。
一种尿不湿,包括底布层以及依次层叠设置于所述底布层的锁水层、吸水层和表面包覆层,所述吸水层为竹浆纸包裹第一高吸水性树脂和竹浆绒毛浆的材料层,所述锁水层为竹纤维布包裹第二高吸水性树脂和竹浆绒毛浆的材料层。
在其中一个实施例中,所述吸水层的厚度小于所述锁水层的厚度。
在其中一个实施例中,所述第一高吸水性树脂的0.9%NaCl吸收倍率大于第二高分子吸水性树脂的0.9%NaCl吸收倍率。
在其中一个实施例中,所述表面包覆层包括表层和导流层,所述导流层设于所述表层和所述吸水层之间。
在其中一个实施例中,所述表层为竹纤维布层。
在其中一个实施例中,所述导流层为聚乳酸层。
在其中一个实施例中,所述底布层包括底层和透气防水膜,所述透气防水膜设于所述锁水层和所述底层之间。
在其中一个实施例中,所述底层为竹纤维布层。
在其中一个实施例中,所述透气防水膜为聚乳酸膜。
本发明的尿不湿包括吸水层和锁水层,通过吸水层和锁水层的协同作用,尿不湿可以快速吸收并锁住尿液,增强了尿不湿的瞬间吸收尿液和锁住尿液的效果,从而可以使尿液快速离开使用者的皮肤以及尿不湿的表面包覆层,保持使用者的皮肤干爽,进而提高使用舒适度。
附图说明
图1为本发明尿不湿的结构示意图。
图中:1、表面包覆层;2、吸水层;3、锁水层;4、底布层;11、表层;12、导流层;41、透气防水膜;42、底层。
具体实施方式
以下将对本发明提供的尿不湿作进一步说明。
如图1所示,为本发明的实施方式的一种尿不湿,包括底布层4以及依次层叠设置于所述底布层4的锁水层3、吸水层2和表面包覆层1,所述吸水层2为竹浆纸包裹第一高吸水性树脂和竹浆绒毛浆的材料层,所述锁水层3为竹纤维布包裹第二高吸水性树脂和竹浆绒毛浆的材料层。
本发明的尿不湿包括吸水层2和锁水层3,相较于传统的吸收芯层,吸水层2可以快速吸收从表面包覆层1渗透下来的尿液,并根据高吸水性树脂(SAP)的材料特性扩散至锁水层3,并通过锁水层3牢牢锁住尿液,兼顾了尿不湿的瞬间吸收尿液和锁住尿液的效果。而且,吸水层2和锁水层3中均采用竹浆绒毛浆代替传统的木浆,相较于木浆,竹浆绒毛浆的吸水性和柔韧性更好,因此,本发明尿不湿的吸收尿液的效果更好。考虑到使用安全和卫生性,所述竹浆绒毛浆为本色竹浆绒毛浆,即竹浆绒毛浆没有经过漂白等处理。
尿不湿中,吸水层2的主要作用在于快速吸收从表面包覆层1渗透下来的尿液,而锁水层3的主要作用在于储存并锁住尿液,因此,所述吸水层2的厚度小于所述锁水层3的厚度,可以提高尿不湿的储存量。可以理解,吸水层2较薄,吸收尿液后体积小,因此,可采用竹浆纸作为包裹材料,优选采用无尘竹浆纸(即无尘纸)包裹,不仅具有高弹力,柔软、手感、垂感极佳的优点,而且具有极高的吸水性和良好的保水性能。而锁水层3较厚,吸收尿液后体积较大,可采用竹纤维布作为包裹材料,强度较好。同样,考虑到使用安全和卫生性,所述竹浆纸为本色竹浆纸,所述竹纤维布为本色竹纤维布,均没有经过漂白等处理。
高吸水性树脂不但吸水能力强,而且锁水能力也非常强。高吸水性树脂根据原料来源、亲水化方法等可以分为很多系列,同时,各系列的流速、假比重、茶袋保持力、0.9%NaCl吸收倍率、0.3AAP、0.7AAP以及pH等性能不同。为了使吸水层2起到快速吸收尿液而锁水层3起到锁住尿液的作用,优选的,所述第一高吸水性树脂的0.9%NaCl吸收倍率大于第二高分子吸水性树脂的0.9%NaCl吸收倍率。高吸水性树脂的0.9%NaCl吸收倍率越大,吸收尿液的速度越快,吸收尿液后交联密度越大,但是,对尿液的锁定效果就随之降低。
优选的,所述第一高分子吸水树脂的0.9%NaCl吸收倍率大于等于55%。进一步的,所述第一高分子吸水树脂优选为台塑BC388S1的高分子吸水树脂或者住友60S的高分子吸水树脂,台塑BC388S1的高分子吸水树脂的0.9%NaCl吸收倍率为63.8%,住友60S的高分子吸水树脂的0.9%NaCl吸收倍率为64.4%。所述第二高分子吸水树脂优选为台塑BC383AZ的高分子吸水树脂或者巴斯夫7059的高分子吸水树脂,台塑BC383AZ的高分子吸水树脂的0.9%NaCl吸收倍率为53.8%,巴斯夫7059的高分子吸水树脂的0.9%NaCl吸收倍率为53.9%。
尿不湿可分为初生儿尿不湿、小号尿不湿、中号尿不湿、大号尿不湿和特大号尿不湿,可根据不同型号的尿不湿调节吸水层2和锁水层3的厚度,以及调节吸水层2中第一高吸水性树脂和竹浆绒毛浆的质量比、锁水层3中第二高吸水性树脂和竹浆绒毛浆的质量比。
优选的,所述表面包覆层1包括表层11和导流层12,所述导流层12设于所述表层11和所述吸水层2之间。使用者将尿液排出体外后,首先由表层1接收并向下渗透尿液,然后由导流层2接收由表层1渗透下来的尿液,导流层2可以有效帮助尿液从表层11向吸水层2快速传导并使尿液往纵向扩散分布,从而使尿液快速离开使用者皮肤进入吸水层2。具体的,尿液进入导流层2后部分顺着空隙直接被吸水层2吸收,其余部分沿着导流层2的纵向传导并扩散后被吸水层2吸收,不仅扩大了吸水层2的吸收面积,而且使尿液被吸水层2均匀的吸收,不致于因尿液被吸水层2集中吸收而导致吸水层2和锁水层3局部变厚,阻碍后续尿液的吸收和储存,降低尿液储存量。
考虑到尿不湿为一次性用品,用后即抛,而尿不湿的处理方式主要为掩埋、焚烧等,因此,本发明尿不湿中表层11优选为竹纤维布层,相较于传统的无纺布表层,竹纤维布可降解,更环保。进一步的,竹纤维布为本色竹纤维布,即没有经过漂白等处理,使用更安全、更卫生。
同理,所述导流层12优选为聚乳酸层,与传统的无纺布等化纤材料的导流层相比,聚乳酸材料是一种可降解的环境友好材料。
优选的,所述底布层4包括底层42和透气防水膜41,所述透气防水膜41设于所述锁水层3和所述底层42之间。透气防水膜41不仅透气,而且可以防止尿液量过大后发生渗漏。
同理,考虑到环保问题,所述底层42为竹纤维布层,所述竹纤维布为本色竹纤维布。所述透气防水膜41为聚乳酸膜。
本发明尿不湿包括底布层4以及依次层叠设置于所述底布层4的锁水层3、吸水层2和表面包覆层1,优选的,所述尿不湿包括底层42以及依次层叠设置于所述底层42的透气防水膜41、锁水层3、吸水层2、导流层12和表层11。在制备时,各层之间采用粘合剂依次层压粘结即可。优选的,所述粘合剂为聚乳酸热熔胶,粘结温度为150℃~170℃。
本发明尿不湿在使用时,表层11与紧贴使用者的皮肤。使用者将尿液排出体外后,首先由表层1接收并向下渗透尿液,尿液进入导流层2后部分顺着空隙直接被吸水层2吸收,其余部分沿着导流层2的纵向传导并扩散后被吸水层2吸收。吸水层2吸收尿液后传输到锁水层3锁住尿液,尿液储存于锁水层3中。待尿液储存量达到极限后,更换尿不湿即可。
本发明的尿不湿包括吸水层和锁水层,通过吸水层和锁水层的协同作用,尿不湿可以快速吸收并锁住尿液,增强了尿不湿的瞬间吸收尿液和锁住尿液的效果,从而可以使尿液快速离开使用者的皮肤以及尿不湿的表面包覆层,保持使用者的皮肤干爽,进而提高使用舒适度。
本发明的尿不湿没有使用化纤等不易降解的材料,在用后可降解处理,环境友好。而且,本发明使用本色竹浆绒毛浆代替了传统的木浆,且表层、吸水层的包裹材料、锁水层的包裹材料以及底层均使用了本色竹纤维材料,更安全、卫生。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (9)
1.一种尿不湿,其特征在于,包括底布层以及依次层叠设置于所述底布层的锁水层、吸水层和表面包覆层,所述吸水层为竹浆纸包裹第一高吸水性树脂和竹浆绒毛浆的材料层,所述锁水层为竹纤维布包裹第二高吸水性树脂和竹浆绒毛浆的材料层。
2.根据权利要求1所述的尿不湿,其特征在于,所述吸水层的厚度小于所述锁水层的厚度。
3.根据权利要求1所述的尿不湿,其特征在于,所述第一高吸水性树脂的0.9%NaCl吸收倍率大于第二高分子吸水性树脂的0.9%NaCl吸收倍率。
4.根据权利要求1所述的尿不湿,其特征在于,所述表面包覆层包括表层和导流层,所述导流层设于所述表层和所述吸水层之间。
5.根据权利要求4所述的尿不湿,其特征在于,所述表层为竹纤维布层。
6.根据权利要求4所述的尿不湿,其特征在于,所述导流层为聚乳酸层。
7.根据权利要求1所述的尿不湿,其特征在于,所述底布层包括底层和透气防水膜,所述透气防水膜设于所述锁水层和所述底层之间。
8.根据权利要求7所述的尿不湿,其特征在于,所述底层为竹纤维布层。
9.根据权利要求7所述的尿不湿,其特征在于,所述透气防水膜为聚乳酸膜。
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