CN106811866B - 一种用于卫生巾的含棉无纺布的制备方法 - Google Patents

一种用于卫生巾的含棉无纺布的制备方法 Download PDF

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CN106811866B
CN106811866B CN201611042973.7A CN201611042973A CN106811866B CN 106811866 B CN106811866 B CN 106811866B CN 201611042973 A CN201611042973 A CN 201611042973A CN 106811866 B CN106811866 B CN 106811866B
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严华荣
张恒
甄琪
金银山
朱建民
陈健康
邸道佩
董二莹
许国良
王立兴
葛柯
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Zhejiang Jinsanfa Sanitary Material Technology Co., Ltd.
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    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
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Abstract

本发明公开了一种用于卫生巾的含棉无纺布的制备方法,通过以亲水引流纺粘布为引流纤维层,以拒水打孔含棉布为快干亲肤层叠合形成复合布料,对复合布料进行水刺并烘干处理,能够使布料集高强度、高吸湿、高排水、高透气的性能于一体,布料不易变形,持久干爽,亲肤性好,利于市场推广应用。

Description

一种用于卫生巾的含棉无纺布的制备方法
技术领域
本发明涉及纺织产品的技术领域,特别是一种用于卫生巾的含棉无纺布的制备方法的技术领域。
背景技术
纺粘技术是上世纪五十年代后期逐步发展起来非织造布新技术,是化纤技术与非织造技术结合最成功的典范。传统的对纺丝纤维网进行加固的方式主要有针刺法和热轧黏合法等,所生产的非织造布具有强度高、品种多的特点,但手感、渗透性和纤维均匀度较差,用途得不到扩展。通常200克/m2以上的纺丝纤维网经针刺加固的产品主要用于土工布和屋顶防水材料;60~200克/m2纺丝纤维网经热轧加固的非织造布多用于手提袋材料和鞋材,10~25克/m2则多用于卫生巾和小儿尿裤等卫生材料。尽管纺丝纤维网经热轧后具有强力高、毛羽少的优点,但是长丝纤维网一经热轧,通透性就变差,而且手感***。因此,丙纶纺粘法非织造布的吸湿、渗透性和手感均不理想,即使进行了亲水处理也难以加工出亲肤感强的高附加值产品。为了表述清楚起见,在此将纺丝铺叠或堆叠形成的、没有经过加固的纤维网成为纺丝纤维网,纺丝纤维网经热轧加固后,则称之为纺粘纤维网或纺粘布。 水刺加固技术是利用水射流将纤维网缠结成布的一种专门技术,是上个世纪七十年代发展起来的非织造布新技术。它不仅可以将梳理铺叠的纤维网,或湿法得到的纤维网加工成短纤维水刺非织造布,也可将纺丝纤维网或纺粘纤维网加工成长丝水刺非织造布,还可以对若干层纤维网或布进行复合水刺加固,制备由多层纤维网构成的复合产品。水刺非织造布具有手感柔软、吸湿性强、悬垂性好等优点,而且外观多样,卫生性好。但水刺法很难生产出克重低于30克/m2的水刺布,因为薄纤维网在水刺力的作用下很容易被打散,难以成布。目前,国际上有实力的公司都在研究基于不同纤维网的复合加固工艺。现在的卫生巾、尿不湿的表层多为打孔膜、热风无纺布以及纯棉的水刺无纺布。打孔膜的透气性差;热风无纺布的干爽形好但是没有棉感,生物相容性差,有毛刺感;纯棉水刺无纺布的干爽性差,不能长期使用,易产生潮湿粘附的感觉。因此,寻找一种快干舒适的含棉无纺布用于卫生巾、尿不湿的表层将是极为必要的。
发明内容
本发明的目的就是解决现有技术中的问题,提出一种用于卫生巾的含棉无纺布的制备方法,能够使布料集高强度、高吸湿、高排水、高透气的性能于一体,布料不易变形,持久干爽,亲肤性好,利于市场推广应用。
为实现上述目的本发明一种用于卫生巾的含棉无纺布的制备方法,依次包括以下步骤:
步骤一:含棉水刺布的制备:
Ⅰ 原料整理:选择所需要的棉花原料,将棉花原料通过喂料***送入处理设备,将大团棉花原料初步开松和除尘,除去其中较大的杂质,除去杂质后,将棉花原料浸泡在清洗液中5~7min,然后沥干水分,对沥干水分的棉花原料进行精细分梳、除杂,得到纯棉原料;
Ⅱ布料加工:对得到的纯棉原料添加适量的热熔性纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到含棉纤维网,对含棉纤维网进行水刺处理,使含棉纤维之间相互缠结,形成含棉布网,利用轧车挤出含棉布网中的水分,对含棉布网进行漂煮,对漂煮后的含棉布网进行布幅整形,对布幅整形后的含棉布网进行二次水刺并烘干处理,制成含棉水刺布;
步骤二:亲水纺粘布的制备:选用PP原料和亲水母料组成混料,将混料熔融过滤后通过螺杆挤出机送入计量泵,计量泵将混料以一定的压力连续均匀送入纺丝箱,纺丝箱将混料制成混料纤维,混料纤维在冷风口进行冷却并拉伸定型,对定型后的混料纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到混料纤维网,将混料纤维网送入热轧机进行轧合定型,混料纤维网受热熔融相互粘合成纺粘布,即亲水纺粘布;
步骤三:引流处理:将步骤二制备的亲水纺粘布平铺在轧辊内,采用热压合模具在亲水纺粘布上均匀挤压出引流干爽凸起,得到亲水引流纺粘布;
步骤四:拒水处理:将步骤一制备的含棉水刺布浸没在拒水整理液中,采用二浸二轧工艺进行浸轧,并在含棉水刺布上均匀的打出10~40目的透水孔,最后依次经烘干、烘焙,制成拒水打孔含棉布;
步骤五:水刺复合:将步骤四制备的拒水打孔含棉布叠合在步骤三制备的亲水引流纺粘布上,以亲水引流纺粘布为引流纤维层,以拒水打孔含棉布为快干亲肤层叠合形成复合布料,对复合布料进行水刺并烘干处理,得到含棉无纺布;所述快干亲肤层由以下质量分数的各组分组成:棉纤维85%~100%、热熔性纤维0%~15%;所述快干亲肤层的质量密度为20~45g/㎡;
步骤六:收卷送检:将步骤五制备的含棉无纺布进行收卷裁切,并选择样品送检,送检样品合格后包装入库。
作为优选,所述步骤三中引流干爽凸起和步骤四中的透水孔位置呈上下一一对应关系,所述透水孔与引流干爽凸起相接触。
作为优选,所述步骤一的Ⅰ 中棉花原料在清洗液中的浸泡温度为40~50℃,棉花原料浸泡过程中采用超声波震荡来提升清洗效果,所述步骤一的Ⅱ 中含棉布网的漂煮温度为70~80℃,漂煮时间15~20min,漂煮过程中采用涡流回旋来提升漂煮效果,漂煮后沥干水分,重复上述漂煮步骤三次。
作为优选,所述步骤二中的PP原料和亲水母料的混料替换为ES纤维原料。
本发明的有益效果:本发明通过以亲水引流纺粘布为引流纤维层,以拒水打孔含棉布为快干亲肤层叠合形成复合布料,对复合布料进行水刺并烘干处理,能够使布料集高强度、高吸湿、高排水、高透气的性能于一体,布料不易变形,持久干爽,亲肤性好,利于市场推广应用。
本发明的特征及优点将通过实施例进行详细说明。
【具体实施方式】
本发明一种用于卫生巾的含棉无纺布的制备方法,依次包括以下步骤:
步骤一:含棉水刺布的制备:
Ⅰ 原料整理:选择所需要的棉花原料,将棉花原料通过喂料***送入处理设备,将大团棉花原料初步开松和除尘,除去其中较大的杂质,除去杂质后,将棉花原料浸泡在清洗液中5~7min,然后沥干水分,对沥干水分的棉花原料进行精细分梳、除杂,得到纯棉原料;
Ⅱ布料加工:对得到的纯棉原料添加适量的热熔性纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到含棉纤维网,对含棉纤维网进行水刺处理,使含棉纤维之间相互缠结,形成含棉布网,利用轧车挤出含棉布网中的水分,对含棉布网进行漂煮,对漂煮后的含棉布网进行布幅整形,对布幅整形后的含棉布网进行二次水刺并烘干处理,制成含棉水刺布;
步骤二:亲水纺粘布的制备:选用PP原料和亲水母料组成混料,将混料熔融过滤后通过螺杆挤出机送入计量泵,计量泵将混料以一定的压力连续均匀送入纺丝箱,纺丝箱将混料制成混料纤维,混料纤维在冷风口进行冷却并拉伸定型,对定型后的混料纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到混料纤维网,将混料纤维网送入热轧机进行轧合定型,混料纤维网受热熔融相互粘合成纺粘布,即亲水纺粘布;
步骤三:引流处理:将步骤二制备的亲水纺粘布平铺在轧辊内,采用热压合模具在亲水纺粘布上均匀挤压出引流干爽凸起,得到亲水引流纺粘布;
步骤四:拒水处理:将步骤一制备的含棉水刺布浸没在拒水整理液中,采用二浸二轧工艺进行浸轧,并在含棉水刺布上均匀的打出10~40目的透水孔,最后依次经烘干、烘焙,制成拒水打孔含棉布;
步骤五:水刺复合:将步骤四制备的拒水打孔含棉布叠合在步骤三制备的亲水引流纺粘布上,以亲水引流纺粘布为引流纤维层,以拒水打孔含棉布为快干亲肤层叠合形成复合布料,对复合布料进行水刺并烘干处理,得到含棉无纺布;所述快干亲肤层由以下质量分数的各组分组成:棉纤维85%~100%、热熔性纤维0%~15%;所述快干亲肤层的质量密度为20~45g/㎡,所述引流纤维层采用PP原料、亲水母料;ES纤维原料两种原料搭配方式中的一种;
步骤六:收卷送检:将步骤五制备的含棉无纺布进行收卷裁切,并选择样品送检,送检样品合格后包装入库。
所述步骤三中引流干爽凸起和步骤四中的透水孔位置呈上下一一对应关系,所述透水孔与引流干爽凸起相接触,所述步骤一的Ⅰ 中棉花原料在清洗液中的浸泡温度为40~50℃,棉花原料浸泡过程中采用超声波震荡来提升清洗效果,所述步骤一的Ⅱ 中含棉布网的漂煮温度为70~80℃,漂煮时间15~20min,漂煮过程中采用涡流回旋来提升漂煮效果,漂煮后沥干水分,重复上述漂煮步骤三次,所述步骤二中的PP原料和亲水母料的混料替换为ES纤维原料。
本发明工作过程:
本发明通过将PP亲水引流纺粘布为引流层和拒水打孔纯棉布为干爽层叠合制成复合水刺布,能够使布料集高强度、高吸湿、高排水、高透气的性能于一体,布料不易变形,持久干爽,亲肤性好,利于市场推广应用。
上述实施例是对本发明的说明,不是对本发明的限定,任何对本发明简单变换后的方案均属于本发明的保护范围。

Claims (4)

1.一种用于卫生巾的含棉无纺布的制备方法,其特征在于:依次包括以下步骤:
步骤一:含棉水刺布的制备:
Ⅰ 原料整理:选择所需要的棉花原料,将棉花原料通过喂料***送入处理设备,将大团棉花原料初步开松和除尘,除去其中较大的杂质,除去杂质后,将棉花原料浸泡在清洗液中5~7min,然后沥干水分,对沥干水分的棉花原料进行精细分梳、除杂,得到纯棉原料;
Ⅱ布料加工:对得到的纯棉原料添加适量的热熔性纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到含棉纤维网,对含棉纤维网进行水刺处理,使含棉纤维之间相互缠结,形成含棉布网,利用轧车挤出含棉布网中的水分,对含棉布网进行漂煮,对漂煮后的含棉布网进行布幅整形,对布幅整形后的含棉布网进行二次水刺并烘干处理,制成含棉水刺布;
步骤二:亲水纺粘布的制备:选用PP原料和亲水母料组成混料,将混料熔融过滤后通过螺杆挤出机送入计量泵,计量泵将混料以一定的压力连续均匀送入纺丝箱,纺丝箱将混料制成混料纤维,混料纤维在冷风口进行冷却并拉伸定型,对定型后的混料纤维进行多层、不同方向的交叉铺放,并进行一定的牵伸加固,得到混料纤维网,将混料纤维网送入热轧机进行轧合定型,混料纤维网受热熔融相互粘合成纺粘布,即亲水纺粘布;
步骤三:引流处理:将步骤二制备的亲水纺粘布平铺在轧辊内,采用热压合模具在亲水纺粘布上均匀挤压出引流干爽凸起,得到亲水引流纺粘布;
步骤四:拒水处理:将步骤一制备的含棉水刺布浸没在拒水整理液中,采用二浸二轧工艺进行浸轧,并在含棉水刺布上均匀的打出10~40目的透水孔,最后依次经烘干、烘焙,制成拒水打孔含棉布;
步骤五:水刺复合:将步骤四制备的拒水打孔含棉布叠合在步骤三制备的亲水引流纺粘布上,以亲水引流纺粘布为引流纤维层,以拒水打孔含棉布为快干亲肤层叠合形成复合布料,对复合布料进行水刺并烘干处理,得到含棉无纺布;
步骤六:收卷送检:将步骤五制备的含棉无纺布进行收卷裁切,并选择样品送检,送检样品合格后包装入库。
2.如权利要求1所述的一种用于卫生巾的含棉无纺布的制备方法,其特征在于:所述步骤三中引流干爽凸起和步骤四中的透水孔位置呈上下一一对应关系,所述透水孔与引流干爽凸起相接触。
3.如权利要求1所述的一种用于卫生巾的含棉无纺布的制备方法,其特征在于:所述步骤一的Ⅰ 中棉花原料在清洗液中的浸泡温度为40~50℃,棉花原料浸泡过程中采用超声波震荡来提升清洗效果,所述步骤一的Ⅱ 中含棉布网的漂煮温度为70~80℃,漂煮时间15~20min,漂煮过程中采用涡流回旋来提升漂煮效果,漂煮后沥干水分,重复上述漂煮步骤三次。
4.如权利要求1所述的一种用于卫生巾的含棉无纺布的制备方法,其特征在于:所述步骤二中的PP原料和亲水母料的混料替换为ES纤维原料。
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