CN108754858A - 一种吸收性制品表面非织造布的制备方法及非织造布 - Google Patents

一种吸收性制品表面非织造布的制备方法及非织造布 Download PDF

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CN108754858A
CN108754858A CN201810498053.9A CN201810498053A CN108754858A CN 108754858 A CN108754858 A CN 108754858A CN 201810498053 A CN201810498053 A CN 201810498053A CN 108754858 A CN108754858 A CN 108754858A
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woven cloth
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孙瑜
曹秀明
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Sunshine Health Medical New Material Jiangyin Co Ltd
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
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    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
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    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4391Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
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    • D06M13/322Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/35Heterocyclic compounds
    • D06M13/352Heterocyclic compounds having five-membered heterocyclic rings
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    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/01Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
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    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/30Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32Polyesters

Abstract

本发明公开了一种吸收性制品表面非织造布的制备方法,包括以下步骤:S1,配置导湿纤维,铺网,一次水刺得到导湿纤维无纺布;S2,将导湿纤维无纺布导入布料冲孔机中,冲切呈具有镂空孔的导湿无纺布网;S3,配置表层亲水纤维,铺网得表层纤网,将导湿无纺布网层叠铺设在表层纤网上,经二次水刺、清洗、烘干,得到吸收型制品表面非织造布成品。本发明吸收性制品表面非织造布中采用导湿纤维为原料,经一次水刺、冲切制成导湿无纺布网,并通过二次水刺将导湿无纺布网与表层纤网复合,表层纤网具有良好的亲肤性,内侧的导湿无纺布网构成液体横向传递通道,二次水刺高压水流带动导湿纤维穿向表层纤网,形成液体竖向传递通道,具有良好的导流性能。

Description

一种吸收性制品表面非织造布的制备方法及非织造布
技术领域
本发明属于非织造布技术领域,具体涉及一种吸收性制品表面非织造布的制备方法及非织造布。
背景技术
为了保证使用者的舒适度,吸收型制品如卫生巾、纸尿裤的表面非织造布的材质通常为亲水性无纺布,亲水性无纺布下方设置有用于吸收和保持液体的绒毛浆。液体通过亲水性无纺布,被绒毛浆所吸收。进一步的,为了改进吸收型制品的瞬间吸收能力,通常需要在表层或者表层及绒毛浆的层叠结构上热压压纹,压纹呈均布的网状或者发散状的网状,液体释放的瞬间,液体会沿着网状的压纹,在吸收型制品平面内流动,直至被压纹两侧的绒毛浆吸收。但是上述具有压纹的吸收型制品在内含一定量的液体之后会呈膨胀状态。
改进的技术方案如200310116149.8所述的,在表层片材中设置第一纤维和第二纤维,其中第二纤维铺设在第一纤维下方,第二纤维在受热后发生卷缩,而第一纤维实质不具有热收缩性或者在第二纤维的卷缩开始温度一下不热收缩,第一纤维层和第二纤维层之间通过矩形阵列状排布的热熔融粘接点一体连接,由于第二纤维的收缩,形成具有表面沟槽吸收制品表层片材,并且具有良好的回流防止性和对穿戴者的动作跟随性。但是,热收缩纤维的卷缩不可避免的会导致第二纤维层的紧实度增加,影响液体的正常下渗速率。
因此,有必要对现有技术中的吸收性制品表面非织造布的组成和结构进行改进。
发明内容
本发明的目的之一在于克服现有技术中存在的缺陷,提供一种吸收性制品表面非织造布的制备方法,在表层纤网下方设置网状的导湿纤维层,二次水刺使得与皮肤接触的表层具有少量的导湿纤维,导湿无纺布网有助于横向导湿,而经二次水刺穿刺的导湿纤维具有纵向的导湿作用,实现快速导流,且导流结构并不会因吸水变形而变化。
为实现上述目的,本发明的技术方案为:一种吸收性制品表面非织造布的制备方法,其特征在于,包括以下步骤:
S1,配置导湿纤维,铺网,一次水刺得到导湿纤维无纺布;
S2,将导湿纤维无纺布导入布料冲孔机中,冲切呈具有镂空孔的导湿无纺布网;
S3,配置表层亲水纤维,铺网得表层纤网,将导湿无纺布网层叠铺设在表层纤网上,经二次水刺、清洗、烘干,得到吸收型制品表面非织造布成品。
导湿无纺布网中的通孔包括但不限于三角形、菱形、矩形、六边形。导湿纤维无纺布的冲切优选采用机械冲切,原因在与机械冲切不会引发聚酯纤维切口的局部卷曲,破坏纤维的导湿性能。导湿无纺布网的组成边宽度根据瞬间流量的大小确定。
优选的技术方案为,所述导湿纤维为表面具有导湿沟槽的亲水导湿纤维。
为了进一步优化导湿效果,形成与现有技术中相似的导流压痕,优选的技术方案为,还包括S4,S4为在S3所得吸收型制品表面非织造布成品上设置网状的压痕,所述压痕由吸收型制品表面非织造布表层纤网向内凹陷,压痕与导湿无纺布网相对应。压痕可经由超声波或者热压制得。
优选的技术方案为,导湿纤维为经亲水处理的异形截面涤纶纤维,亲水处理包括以下步骤:
S1:将涤纶纤维置于离子液体中,加热对涤纶表面刻蚀处理,清洗干燥;
S2:将S1所得涤纶浸渍在分散有羧基化纳晶纤维素的亲水处理液中,两浸两轧,再经预烘、焙烘、漂洗干燥,得到亲水处理的异形截面涤纶纤维;
其中,S1中离子液体为选自烷基甲基咪唑溴化物、烷基甲基咪唑氯化物中的一种或两种以上的组合,刻蚀处理温度为130~150℃,处理时间为50~90min。现有的纳米接枝PET的步骤包括浸渍含2D树脂并加有少量氯化镁、柠檬酸的水溶液后烘干、浸入纳米微晶纤维素的水分散体系后烘干,上述过程采用羧基化纳米微晶纤维素为接枝物,步骤简单。
优选的技术方案为,亲水处理液的主要组成为水、羧基化纳晶纤维素、分散剂和酯化催化剂,羧基化纳晶纤维素的重量百分比为1.5~3%,酯化催化剂为具有选自烷基甲基咪唑硫氰酸盐、甲基咪唑磺酸氢盐中的一种或两种以上的组合,浸渍温度为55~65℃。
优选的技术方案为,亲水处理液中离子液体的重量百分比为0.5~2%。
优选的技术方案为,预烘温度为80~85℃,预烘时间为5~10min,焙烘温度为140~150℃,焙烘直至干燥。
优选的技术方案为,酯化催化剂为1-乙基-3-甲基咪唑硫氰酸盐或1-苯-3-甲基咪唑磺酸氢盐。
本发明的目的之二在于提供一种非织造布,其特征在于,由上述的吸收性制品表面非织造布的制备方法制得。
本发明的目的之三在于提供一种非织造布在吸收性制品表面的应用。
本发明的优点和有益效果在于:
本发明吸收性制品表面非织造布中采用导湿纤维为原料,经一次水刺、冲切制成导湿无纺布网,并通过二次水刺将导湿无纺布网与表层纤网复合,表层纤网具有良好的亲肤性,内侧的导湿无纺布网构成液体横向传递通道,二次水刺高压水流带动导湿纤维穿向表层纤网,形成液体竖向传递通道,具有良好的导流性能;
与现有技术中的压痕导流相比,非织造布的导流性能不会因为使用时间长短或者吸收性制品吸收量的大小而改变。
具体实施方式
下面结合实施例,对本发明的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案,而不能以此来限制本发明的保护范围。
实施例1
实施例1吸收性制品表面非织造布的制备方法,包括以下步骤:
S1,配置导湿纤维,铺网,一次水刺得到导湿纤维无纺布;
S2,将导湿纤维无纺布导入布料冲孔机中,冲切呈具有镂空孔的导湿无纺布网;
S3,配置表层亲水纤维,铺网得表层纤网,将导湿无纺布网层叠铺设在表层纤网上,经二次水刺、清洗、烘干,得到吸收型制品表面非织造布成品。
导湿纤维为表面具有导湿沟槽的亲水导湿纤维。
表层纤网和导湿纤维无纺布的克重均为20g/m2,导湿无纺布网的组成边边长为5mm,网中通孔为六边形。表层纤网为棉纤维。导湿纤维是未经亲水处理的涤纶短纤。
实施例2
实施例2与实施例1的区别在于,还包括S4,S4为在S3所得吸收型制品表面非织造布成品上设置网状的热压压痕,压痕由吸收型制品表面非织造布表层纤网向内凹陷,压痕与导湿无纺布网相对应。
实施例3
实施例3与实施例2的区别在于,导湿纤维为经亲水处理的异形截面涤纶纤维,亲水处理包括以下步骤:
S1:将涤纶纤维置于离子液体中,加热对涤纶表面刻蚀处理,清洗干燥;
S2:将S1所得涤纶浸渍在分散有羧基化纳晶纤维素的亲水处理液中,两浸两轧,再经预烘、焙烘、漂洗干燥,得到亲水处理的异形截面涤纶纤维,轧液后涤纶的带液率为100%;
其中,S1中离子液体为1-烷基-3-甲基咪唑溴化物、烷基甲基咪唑氯化物中的一种或两种以上的组合,刻蚀处理温度为130℃,处理时间为90min;亲水处理液的组成为2%羧基化纳晶纤维素、1%分散剂脂肪醇聚氧乙烯醚、1%酯化催化剂和余量的水,酯化催化剂为1-丁基-3-甲基咪唑硫氰酸盐,浸渍温度为常温。
预烘温度为75℃,预烘时间为15min,焙烘温度为130℃,
实施例4
实施例4与实施例3的区别在于亲水处理的工艺参数,刻蚀处理温度为150℃,处理时间为50min;预烘温度为80℃,预烘时间为10min,焙烘温度为150℃,焙烘直至干燥。
实施例5
实施例5与实施例4的区别在于亲水处理液的组成,羧基化纳晶纤维素的重量百分比为1.5%;浸渍温度为55℃;亲水处理液中离子液体的重量百分比为0.5%。
预烘温度为85℃,预烘时间为5min,焙烘温度为140℃,焙烘直至干燥。
实施例6
实施例6与实施例5的区别在于:羧基化纳晶纤维素的重量百分比为3%;浸渍温度为65℃;亲水处理液中离子液体的重量百分比为2%。
实施例7
实施例7的酯化促进剂为1-苯-3-甲基咪唑磺酸氢盐,亲水处理液中的重量百分比为2.1%。
对比例
对比例1采用20g/m2的棉纤维无纺布作为吸收材质的表层;
对比例2为现购的结构为棉、无尘纸、吸收芯体、无尘纸、透气底膜组成的卫生巾。
导湿性能对比:
按照卫生巾结构由上至下表面非织造布、吸收芯体、透气底膜配置试验样品,吸收芯体采用克重为60g/m2的绒毛浆,吸收芯体与透气底膜之间设置有聚丙烯酸钠吸水层,试验样品裁切成10cm*10cm试样;
配置具有颜色的水溶液,采用移液管移出30ml的水溶液,移液管底端至于试样样品上,手指按压移液管的顶端进气口,移液管底端不接触试验样品,然后将移液管底端出液口放置在卫生巾上,同时手指脱离移液管的顶端进气口,开始计时,直至移液管中液体被全部吸收,结束计时。
实施例中试验中的移液管底端因自重压设在导湿无纺布网上,实施例和对比例的吸收时间见下表:
试样 实施例1 实施例2 实施例3 实施例4
吸收时间/s 5.1 4.7 4.4 4.0
试样 实施例5 实施例6 实施例7 对比例
吸收时间/s 3.5 3.6 3.5 6.3
试验所得实施样品中,由于导湿无纺布网的导湿作用,试样吸收的区域呈发散状态,而对比例吸收区域集中于移液管与试样的接触点及外周。
羧基化纳晶纤维素的制备:
将微晶纤维素加入2mol/L过硫酸铵溶液中,混合均匀后静置一段时间,置于超声波反应器中,在60℃下搅拌反应4-5h,得到悬浮液,将悬浮液置于离心机中反复离心洗涤,得到胶体物质,用1mol/L的柠檬酸溶液将胶体物质溶解,在超声反应器中60℃下反应2-3h,离心机反复离心洗涤,适量去离子水溶解,装入透析袋中一周左右,得到近中性的羧基化纳晶纤维素,微晶纤维素与过硫酸铵溶液的质量体积比为(2~10):100。
柠檬酸也可以采用酒石酸替代。
上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。

Claims (10)

1.一种吸收性制品表面非织造布的制备方法,其特征在于,包括以下步骤:
S1,配置导湿纤维,铺网,一次水刺得到导湿纤维无纺布;
S2,将导湿纤维无纺布导入布料冲孔机中,冲切呈具有镂空孔的导湿无纺布网;
S3,配置表层亲水纤维,铺网得表层纤网,将导湿无纺布网层叠铺设在表层纤网上,经二次水刺、清洗、烘干,得到吸收型制品表面非织造布成品。
2.根据权利要求1所述的吸收性制品表面非织造布的制备方法,其特征在于,所述导湿纤维为表面具有导湿沟槽的亲水导湿纤维。
3.根据权利要求1所述的吸收性制品表面非织造布的制备方法,其特征在于,还包括S4,S4为在S3所得吸收型制品表面非织造布成品上设置网状的压痕,所述压痕由吸收型制品表面非织造布表层纤网向内凹陷,压痕与导湿无纺布网相对应。
4.根据权利要求2所述的吸收性制品表面非织造布的制备方法,其特征在于,导湿纤维为经亲水处理的异形截面涤纶纤维,亲水处理包括以下步骤:
S1:将涤纶纤维置于离子液体中,加热对涤纶表面刻蚀处理,清洗干燥;
S2:将S1所得涤纶浸渍在分散有羧基化纳晶纤维素的亲水处理液中,两浸两轧,再经预烘、焙烘、漂洗干燥,得到亲水处理的异形截面涤纶纤维;
其中,S1中离子液体为选自烷基甲基咪唑溴化物、烷基甲基咪唑氯化物中的一种或两种以上的组合,刻蚀处理温度为130~150℃,处理时间为50~90min。
5.根据权利要求4所述的吸收性制品表面非织造布的制备方法,其特征在于,亲水处理液的主要组成为水、羧基化纳晶纤维素、分散剂和酯化催化剂,羧基化纳晶纤维素的重量百分比为1.5~3%,酯化催化剂为具有选自烷基甲基咪唑硫氰酸盐、甲基咪唑磺酸氢盐中的一种或两种以上的组合,浸渍温度为55~65℃。
6.根据权利要求5所述的吸收性制品表面非织造布的制备方法,其特征在于,亲水处理液中离子液体的重量百分比为0.5~2%。
7.根据权利要求5所述的吸收性制品表面非织造布的制备方法,其特征在于,预烘温度为80~85℃,预烘时间为5~10min,焙烘温度为140~150℃,焙烘直至干燥。
8.根据权利要求5所述的吸收性制品表面非织造布的制备方法,其特征在于,酯化催化剂为1-乙基-3-甲基咪唑硫氰酸盐或1-苯-3-甲基咪唑磺酸氢盐。
9.一种非织造布,其特征在于,由权利要求1至8中任意一项所述的吸收性制品表面非织造布的制备方法制得。
10.权利要求9所述的非织造布在吸收性制品表面的应用。
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