CN114960289A - 一种绿色易降解可冲散的植物纤维清洁擦拭巾及其制备方法和应用 - Google Patents
一种绿色易降解可冲散的植物纤维清洁擦拭巾及其制备方法和应用 Download PDFInfo
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Abstract
本发明公开了一种绿色易降解可冲散的植物纤维清洁擦拭巾及其制备方法和应用。该方法包括以下步骤:将漂白针叶木浆和漂白阔叶木浆加水稀释混合,经碎浆和打浆疏解,得到打浆度为30~35°SR的混合浆料;然后加入再生纤维素纤维和湿强剂,经湿法成形,抄造得到湿纸幅;湿纸幅经挤压脱水后进行水刺加固处理,再经真空压榨脱水和热风穿透干燥至水分低于8%,得到干燥后的纸幅;再在其表面涂覆增效生物基精华液,得到所述的植物纤维清洁擦拭巾。本发明制备的植物纤维清洁擦拭巾具有良好的湿强度、抗拉性能和可分散性能,在生活用纸方面应用前景好。
Description
技术领域
本发明涉及生活用纸领域,特别涉及一种绿色易降解可冲散的植物纤维清洁擦拭巾及其制备方法和应用。
背景技术
随着化妆品消费市场不断繁荣,美妆产品的数量和种类逐年递增,与之相应的清洁产品需求量也不断增加。传统清洁毛巾每次使用完需要清洗杀菌消毒,清洗后不易干燥和保存,容易产生异味、滋生细菌,需要定期更换新毛巾。在使用频率高、消毒频率低的情况下,不仅影响使用体验而且容易刺激皮肤发生过敏反应。一次性清洁擦拭巾是替代传统针织毛巾的新兴产品,与毛巾相比具有方便携带,安全卫生,保证皮肤不受到二次伤害等优势,且方便户外运动和外出旅行携带。
目前市售的一次性清洁擦拭巾主要有面部擦拭巾和婴幼儿擦拭巾等,为单层无纺布结构,以棉纤维或粘胶纤维为原料通过湿法纺丝、水刺、针刺等技术制备而成。普通无纺布擦拭巾的质地不够柔软亲肤,吸水性能差,不能被水冲散,且使用后易变形起毛。另外,当前市场的普通无纺布擦拭巾成分较为单一,不含清洁、养护或消毒成分,因此适用范围较窄,只能配合化妆水或纯净水进行表面清洁。
纸浆纤维原料是目前替代无纺布擦拭巾等产品的较好选择,利用纸浆纤维原料开展绿色环保的卫生用品研究具有重要意义。
发明内容
本发明的首要目的在于克服现有技术的缺点与不足,提供一种绿色易降解可冲散的植物纤维清洁擦拭巾的制备方法。
本发明的另一目的在于提供所述方法制备得到的绿色易降解可冲散的植物纤维清洁擦拭巾。
本发明的再一目的在于提供所述绿色易降解可冲散的植物纤维清洁擦拭巾的应用。
本发明的目的通过下述技术方案实现:
一种绿色易降解可冲散的植物纤维清洁擦拭巾的制备方法,包括以下步骤:
(1)将漂白针叶木浆和漂白阔叶木浆加水稀释混合后进行碎浆处理,再进行打浆疏解,得到打浆度为30~35°SR的混合浆料I;其中,混合浆料I中漂白针叶木浆的质量分数为55~75%,漂白阔叶木浆的质量分数为25~45%;
(2)在步骤(1)中得到的混合浆料I中加入再生纤维素纤维和湿强剂,混合均匀,得到混合浆料II;其中,再生纤维素纤维占混合浆料I总质量的25~50%;
(3)将步骤(2)中得到的混合浆料II进行湿法成形,抄造得到湿纸幅;然后将湿纸幅经挤压脱水后进行水刺加固处理,再经真空压榨脱水和热风穿透干燥至水分低于8%,得到干燥后的纸幅;
(4)将增效生物基精华液中的各组分搅拌混合均匀,得到增效生物基精华液;其中,增效生物基精华液含有如下按重量百分数计的组分:魔芋精粉0.01~0.5%、黄原胶0~0.3%、羧甲基纤维素0~0.3%、海藻酸钠0~0.1%,水余量,且各组分含量不为0;
(5)利用步骤(4)中得到的增效生物基精华液对步骤(3)中得到的干燥后的纸幅进行单面或双面施胶,干燥,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾。
步骤(1)中所述的漂白针叶木浆为不同植物种类来源的纸浆,所述的纸浆包括但不限于马尾松浆和落叶松浆等。
步骤(1)中所述的漂白阔叶木浆为不同植物种类来源的纸浆,所述的纸浆包括但不限于杨木浆和桉木浆等。
步骤(1)中所述的碎浆为采用碎浆机进行碎浆。
步骤(1)中所述的碎浆处理时的浆料浓度为4~6wt%;优选为5wt%。
步骤(1)中所述的碎浆处理的时间为600~750s;优选为750s。
步骤(1)中所述的打浆为采用打浆机进行打浆。
步骤(1)中所述的打浆的转速为1000~1500rpm。
步骤(1)中所述的混合浆料I的打浆度优选为30°SR。
步骤(1)中所述的混合浆料I中漂白针叶木浆的质量分数优选为55~65%,漂白阔叶木浆的质量分数优选为35~45%;所述的混合浆料I中漂白针叶木浆的质量分数更优选为65%,漂白阔叶木浆的质量分数更优选为35%。
步骤(2)中所述的湿强剂优选为聚酰胺多胺环氧氯丙烷树脂(PAE树脂)。
步骤(2)中所述的湿强剂的用量为占所述干燥后的纸幅重量的0.3~1.0%。
步骤(2)中所述的再生纤维素纤维的用量优选为占混合浆料I总质量的35%。
步骤(3)中所述的湿法成形的设备包括但不限于斜网成形器、圆网成形器和长网成形器等;优选为斜网成形器。
步骤(3)中所述的湿纸幅的定量为10~80g/m2;优选为30g/m2。
步骤(3)中所述的水刺加固处理为采用3~8道水刺加固处理;其中,水针作用距离为12~16mm,水刺处理水压先增大后减小,水压范围为4~10MPa;优选为采用6道水刺加固处理;其中,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa。
步骤(3)中所述的真空压榨脱水的真空度为28~32kPa;优选为30kPa。
步骤(3)中所述的热风穿透干燥的温度为380~420℃;优选为400℃。
步骤(4)中所述的增效生物基精华液优选为含有如下按重量百分数计的组分:魔芋精粉0.1~0.3%、黄原胶0.1~0.2%、羧甲基纤维素0.1~0.2%、海藻酸钠0.1%,水余量。
步骤(4)中所述的增效生物基精华液进一步优选为还含有透明质酸钠、甜菜碱、甘油、金缕梅提取物和芦荟提取物中的至少一种。
步骤(4)中所述的增效生物基精华液再进一步优选为含有如下按重量百分数计的组分:魔芋精粉0.01~0.5%、黄原胶0~0.3%、羧甲基纤维素0~0.3%、海藻酸钠0~0.1%、透明质酸钠0~0.1wt%、甜菜碱0~0.3%、甘油0~0.1%、金缕梅提取物0~0.1%、芦荟提取物0~0.1%,水余量,且各组分含量不为0。
步骤(4)中所述的增效生物基精华液更进一步优选为含有如下按重量百分数计的组分:魔芋精粉0.1~0.3%、黄原胶0.1~0.2%、羧甲基纤维素0.1~0.2%、海藻酸钠0.1%、透明质酸钠0.1wt%、甜菜碱0.1%、甘油0.1%、金缕梅提取物0.05%、芦荟提取物0.05%,水余量。
步骤(4)中所述的水为EDI纯水。
步骤(5)中所述的施胶为采用气流计量膜转移施胶机进行施胶。
步骤(5)中所述的增效生物基精华液的施胶量为单面10~15g/m2(即双面20~30g/m2)。
一种绿色易降解可冲散的植物纤维清洁擦拭巾,通过上述任一项所述的方法制备得到。
所述的绿色易降解可冲散的植物纤维清洁擦拭巾在制备生活用纸方面的应用。
所述的生活用纸包括消费用纸和食品用纸等;如面部擦拭巾、婴幼儿擦拭巾等。
本发明相对于现有技术具有如下的优点及效果:
(1)本发明所述的绿色可降解植物纤维清洁擦拭巾在使用时只需要添加适量的水,在擦拭巾浸润水后轻轻揉搓起泡后用于面部清洁即可,其自身带有清洁保湿精华,无需再配合其他清洁产品使用。
(2)本发明所述的绿色可降解植物纤维清洁擦拭巾所用原料均可生物降解,并且具有良好的可分散性,在使用结束时,只需要抛弃在厕所中,即能够在水流的剪切力作用下快速崩解,顺利的通过马桶、城市排水管道以及污水传输系统,并在城市污水处理厂的沉降室中沉淀,最终可在整个城市下水道和污水处理系统过程中实现自然分解或降解,从而有效解决普通无纺布擦拭巾所带来的环境污染问题,有效降低对环境的污染。
(3)本发明植物纤维清洁擦拭巾经传统造纸和水刺复合工艺制作加工而成,进一步稀释混合后送入斜网成形器内形成湿纸幅,再经水刺加固、脱水、烘干、施胶后干燥成纸,提高所述植物纤维清洁擦拭巾的湿强度和抗拉性能。
(4)本发明所用湿强剂PAE树脂为非甲醛湿强剂,无毒、无危险,可应用于消费用纸和食品用纸等场合。
附图说明
图1是实施例1中制备的绿色易降解可冲散的植物纤维清洁擦拭巾的SEM图。
图2是可冲散性测试结果图;其中,(a)为实施例1中制备的植物纤维清洁擦拭巾;(b)为100%再生纤维素擦拭巾;(c)为棉纤维擦拭巾。
具体实施方式
下面结合实施例对本发明作进一步详细的描述,但本发明的实施方式不限于此。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。除非特别说明,本发明采用的试剂、方法和设备为本技术领域常规试剂、方法和设备。下列实施例中未注明具体实验条件的试验方法,通常按照常规实验条件或按照制造厂所建议的实验条件。
本发明实施例和对比例中涉及的漂白针叶木浆、漂白阔叶木浆和再生纤维素纤维购自山东太阳纸业股份有限公司;聚酰胺多胺环氧氯丙烷树脂(PAE树脂)购于东莞市塑泰塑胶原料有限公司;魔芋精粉购于武汉市清江魔芋制品有限公司,纯度大于90%;黄原胶、羧甲基纤维素、海藻酸钠、透明质酸钠、甜菜碱、甘油和芦荟提取物购于上海麦克林有限公司;金缕梅提取物购于深圳市森迪生物科技有限公司;其他原料及试剂均可通过市售获得。
实施例1
(1)将55wt%漂白针叶木浆和45wt%漂白阔叶木浆投入到D型水力碎浆机(SL-L1,山东金双联环保设备有限公司)中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机(P40130,PTA公司)挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于混合浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的黄原胶、0.1wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.2wt%的水充分混合搅拌后经300目滤网过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机(轻工业杭州机电设计研究院有限公司);
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。该植物纤维清洁擦拭巾在扫描电子显微镜(SEM)下的观察结果如图1所示。
实施例2
(1)将60wt%漂白针叶木浆和40wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于混合浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.2wt%的魔芋精粉、0.15wt%的黄原胶、0.15wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.0wt%的水充分混合搅拌后经300目滤网过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
实施例3
(1)将65wt%漂白针叶木浆和35wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于混合浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.3wt%的魔芋精粉、0.2wt%的黄原胶、0.2wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与98.8wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例1
(1)将漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到漂白阔叶木浆浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述打浆度为30°SR的浆料中加入相较于浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀,得到混合浆料;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的黄原胶、0.1wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.2wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例2
(1)将55wt%漂白针叶木浆和45wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的黄原胶、0.1wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.2wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例3
(1)将55wt%漂白针叶木浆和45wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于混合浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的黄原胶、0.1wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.3wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例4
(1)将55wt%漂白针叶木浆和45wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于混合浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的羧甲基纤维素、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.3wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例5
(1)将漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述浆料中加入相较于浆料绝干质量35wt%的再生纤维素纤维和相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的黄原胶、0.1wt%的海藻酸钠、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.3wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
对比例6
(1)将55wt%漂白针叶木浆和45wt%漂白阔叶木浆投入到D型水力碎浆机中加水稀释至5wt%后混合碎浆750s,然后经瓦力打浆机挂6kg砣重刀打浆疏解得到混合浆料,打浆转速为500r/min,最终打浆度为30°SR;
(2)在上述混合浆料中加入相较于成纸(即步骤(5)干燥后的纸幅)0.3wt%的PAE树脂,并充分混合均匀;
(3)将混合浆料在斜网成形器上进行湿法成形,慢速抄造处理形成30g/m2定量的湿纸幅;
(4)将湿纸幅经挤压脱水后进行6道水刺加固处理,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
(5)湿纸幅经真空压榨脱水(真空度为30kPa)和热风穿透干燥(400℃)至水分低于8%,然后将纸幅卷绕至原纸辊备用;
(6)将0.1wt%的魔芋精粉、0.1wt%的黄原胶、0.1wt%的羧甲基纤维素、0.1wt%的透明质酸钠、0.1wt%的甜菜碱、0.1wt%的甘油、0.05wt%的金缕梅提取物、0.05wt%的芦荟提取物与99.3wt%的水充分混合搅拌后过滤得到增效生物基精华液,并通过管道输送至气流计量膜转移施胶机;
(7)将原纸辊上的纸幅输送通过气流计量膜转移施胶机,对纸幅两面进行双面施胶,施胶量为单面10~15g/m2;
(8)经过施胶处理的纸幅干燥后卷绕至卷取辊,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾,备用。
效果实施例
(1)性能测试:取实施例1-3与对比例1-6制得的纸页,在恒温恒湿间按照GB/T24328.2-2020对纸页的松厚度进行测试,按照GB/T 8942-2016对纸页的柔软度进行测试,按照GB/T 24328.6-2020对纸页的吸水能力进行测试,按照GB/T 24328.4-2020和GB/T24328.3-2020对纸页的湿抗张强度和断裂伸长率进行测试。结果如表1所示。
表1
通过实施例1-3与对比例1可以看出:随着漂白针叶木浆和再生纤维素纤维两种长纤维配比的增加,纸页的湿抗张强度和断裂伸长率不断增加,漂白阔叶木浆配比的增加有利于提高纸页的松厚度和柔软度。针叶木等长纤维纸浆柔韧性好,耐折度和抗张强度高,而阔叶木等中短纤维纸浆挺度、松厚度、柔软度高,吸收性好。对比例1中的混合纸浆完全由阔叶木浆组成,因此柔软度、松厚度和吸水性能较好,但湿强和断裂伸长率最低。
通过实施例1与对比例2可知:再生纤维素纤维的添加可以提高纸页的湿抗张强度和断裂伸长率。
通过实施例1与对比例3-6可以看出:本发明选用魔芋精粉、黄原胶、羧甲基纤维素和海藻酸钠作为乳液增稠剂和稳定剂,不仅有利于均匀施胶提高纸页松厚度和柔软度,还有利于提高纸页湿抗张强度和断裂伸长率。
(2)可分散性测试:
①取实施例1-3和对比例1-6制得的纸张,按照GB/T 40181-2021对其可分散性进行测试,结果如表2所示。
表2
由表2可知,实施例1-3与对比例1-6制得的纸页在晃动箱分解试验中的分解率均高于96%,具有良好的可分散性能。
②取实施例1制得的纸页并裁剪为150mm×200mm大小,在L12-102A九阳高速破壁机中加入1L自来水后1000r/min旋转15s测试其可冲散性能,并取同样大小的市售常规100%再生纤维素擦拭巾(定量50g/m2,厚度300μm,购于河南省华美无纺布有限公司)与棉纤维擦拭巾(定量60g/m2,厚度330μm,购于河南省华美无纺布有限公司)在相同条件下测试其可冲散性能,结果如图2所示。
由图2可知:实施例1所制得的擦拭巾在经过15s搅拌后发生破碎分离,而市售常规100%再生纤维素纤维洁面巾与棉纤维洁面巾结构保持完整,说明实施例1所得擦拭巾的可分散性能优于常规市售产品。
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。
Claims (10)
1.一种绿色易降解可冲散的植物纤维清洁擦拭巾的制备方法,其特征在于,包括以下步骤:
(1)将漂白针叶木浆和漂白阔叶木浆加水稀释混合后进行碎浆处理,再进行打浆疏解,得到打浆度为30~35°SR的混合浆料I;其中,混合浆料I中漂白针叶木浆的质量分数为55~75%,漂白阔叶木浆的质量分数为25~45%;
(2)在步骤(1)中得到的混合浆料I中加入再生纤维素纤维和湿强剂,混合均匀,得到混合浆料II;其中,再生纤维素纤维占混合浆料I总质量的25~50%;
(3)将步骤(2)中得到的混合浆料II进行湿法成形,抄造得到湿纸幅;然后将湿纸幅经挤压脱水后进行水刺加固处理,再经真空压榨脱水和热风穿透干燥至水分低于8%,得到干燥后的纸幅;
(4)将增效生物基精华液中的各组分搅拌混合均匀,得到增效生物基精华液;其中,增效生物基精华液含有如下按重量百分数计的组分:魔芋精粉0.01~0.5%、黄原胶0~0.3%、羧甲基纤维素0~0.3%、海藻酸钠0~0.1%,水余量,且各组分含量不为0;
(5)利用步骤(4)中得到的增效生物基精华液对步骤(3)中得到的干燥后的纸幅进行单面或双面施胶,干燥,得到所述绿色易降解可冲散的植物纤维清洁擦拭巾。
2.根据权利要求1所述的制备方法,其特征在于:
步骤(2)中所述的湿强剂为聚酰胺多胺环氧氯丙烷树脂;
步骤(3)中所述的水刺加固处理为采用3~8道水刺加固处理;其中,水针作用距离为12~16mm,水刺处理水压先增大后减小,水压范围为4~10MPa;
步骤(4)中所述的增效生物基精华液含有如下按重量百分数计的组分:魔芋精粉0.1~0.3%、黄原胶0.1~0.2%、羧甲基纤维素0.1~0.2%、海藻酸钠0.1%,水余量。
3.根据权利要求2所述的制备方法,其特征在于:
步骤(3)中所述的水刺加固处理为采用6道水刺加固处理;其中,水针作用距离为16mm,水刺加固的水压分别为4MPa、5MPa、7MPa、7MPa、5MPa、4MPa;
步骤(4)中所述的增效生物基精华液含有如下按重量百分数计的组分:魔芋精粉0.01~0.5%、黄原胶0~0.3%、羧甲基纤维素0~0.3%、海藻酸钠0~0.1%、透明质酸钠0~0.1wt%、甜菜碱0~0.3%、甘油0~0.1%、金缕梅提取物0~0.1%、芦荟提取物0~0.1%,水余量,且各组分含量不为0。
4.根据权利要求3所述的制备方法,其特征在于:
步骤(4)中所述的增效生物基精华液含有如下按重量百分数计的组分:魔芋精粉0.1~0.3%、黄原胶0.1~0.2%、羧甲基纤维素0.1~0.2%、海藻酸钠0.1%、透明质酸钠0.1wt%、甜菜碱0.1%、甘油0.1%、金缕梅提取物0.05%、芦荟提取物0.05%,水余量。
5.根据权利要求1所述的制备方法,其特征在于:
步骤(1)中所述的碎浆处理时的浆料浓度为4~6wt%;
步骤(1)中所述的碎浆处理的时间为600~750s;
步骤(1)中所述的混合浆料I中漂白针叶木浆的质量分数为55~65%,漂白阔叶木浆的质量分数为35~45%;
步骤(2)中所述的湿强剂的用量占所述干燥后的纸幅重量的0.3~1.0%。
6.根据权利要求1所述的制备方法,其特征在于:
步骤(1)中所述的打浆的转速为1000~1500rpm;
步骤(3)中所述的湿法成形的设备为斜网成形器、圆网成形器或长网成形器;
步骤(3)中所述的湿纸幅的定量为10~80g/m2;
步骤(3)中所述的真空压榨脱水的真空度为28~32kPa;
步骤(3)中所述的热风穿透干燥的温度为380~420℃;
步骤(5)中所述的增效生物基精华液的施胶量为单面10~15g/m2。
7.一种绿色易降解可冲散的植物纤维清洁擦拭巾,其特征在于:通过权利要求1~6任一项所述的方法制备得到。
8.权利要求7所述的绿色易降解可冲散的植物纤维清洁擦拭巾在制备生活用纸方面的应用。
9.根据权利要求8所述的应用,其特征在于:所述的生活用纸为消费用纸或食品用纸。
10.根据权利要求9所述的应用,其特征在于:所述的生活用纸为面部擦拭巾或婴幼儿擦拭巾。
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