CN109629286B - 一种牛皮挂面箱板纸的制备工艺 - Google Patents

一种牛皮挂面箱板纸的制备工艺 Download PDF

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CN109629286B
CN109629286B CN201811619030.5A CN201811619030A CN109629286B CN 109629286 B CN109629286 B CN 109629286B CN 201811619030 A CN201811619030 A CN 201811619030A CN 109629286 B CN109629286 B CN 109629286B
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李文斌
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Jiangsu Lee and Man Paper Manufacturing Co Ltd
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Abstract

本发明公开了一种牛皮挂面箱板纸的制备工艺。包括以下几个步骤：（1）制浆；（2）造纸；（3）施胶。本发明的采用分级的底层浆料、芯层浆料和面层浆料，充分利用废纸浆料，同时，保证成纸的强度和亮度；在底层浆料添加填料保证底层浆料的强度，在面层浆料添加干强剂提高了成纸的韧性。

Description

一种牛皮挂面箱板纸的制备工艺
技术领域
本发明涉及一种牛皮挂面箱板纸的制备工艺，属于造纸技术领域。
背景技术
目前，国内生产箱板纸的企业的制浆方法大多采用AOCC（美废）+OCC（国废），经碎浆机粉碎后进行分级筛选，其中，中纤用于面层，短纤用于芯层，长纤用于底层。但是，由于废纸多次回收利用，导致纤维的各种性能指标均有所下降，且废纸中胶粘物较多，抄纸时容易引起纸机断头，造成成品纸外观不合格、局部爆线等质量问题，并且国废质量较美废差。因此，为了提高纸张的产品质量，则需增加进口废纸的配比或添加各种造纸添加剂，并对面层（中纤）浆进行热分散处理。然而，这种做法势必会加大投资大力度，能耗更高，生产成本更高，且无法彻底去除浆料中的胶黏物。
发明内容
为了克服现有技术的不足，本发明提供了一种牛皮挂面箱板纸的制备工艺。
本发明是通过以下技术方案来实现的：
一种牛皮挂面箱板纸的制备工艺，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆混合作为面层浆料；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
所述的一种牛皮挂面箱板纸的制备工艺，所述面层浆料中还加入干强剂。
所述的一种牛皮挂面箱板纸的制备工艺，所述干强剂包括以下重量份数的原料：纳米陶瓷2-6份、纳米二氧化硅2-6份、羧甲基纤维素钠5-10份、壳聚糖1-3份和玻璃纤维10-15份。
所述的一种牛皮挂面箱板纸的制备工艺，所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
所述的一种牛皮挂面箱板纸的制备工艺，所述底层浆料与填料混合后再进入流浆箱。
所述的一种牛皮挂面箱板纸的制备工艺，所述填料包括以下重量份数的原料：：高岭土50-60份、滑石粉25-30份、碳酸氢钠1-4份、聚乙烯10-20份、丁基橡胶10-20份和瓜尔胶4-8份。
所述的一种牛皮挂面箱板纸的制备工艺，所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
本发明所达到的有益效果：
本发明的采用分级的底层浆料、芯层浆料和面层浆料，充分利用废纸浆料，同时，保证成纸的强度和亮度；在底层浆料添加填料保证底层浆料的强度，在面层浆料添加干强剂提高了成纸的韧性。
本发明制备得到的成纸耐破指数≥3.57kPa•m2/g；耐折度≥15次；成纸L值达到54.86±1，a值达到13.23±0.5，b值达到28.37±0.5。
本发明的底层浆料通过添加填料，改善了成纸强度，填料以高岭土和滑石粉为主要原料，采用丁基橡胶改性高岭土和滑石粉，提高了填料的留着率，同时，制备方法简单。
本发明的干强剂采用纳米陶瓷、纳米二氧化硅、羧甲基纤维素钠、壳聚糖和玻璃纤维的混合物作为干强剂，能够提高纸张的物理强度，提高纸张的耐破指数，适合用于废纸的浆料。
具体实施方式
下面对本发明作进一步描述。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
一种牛皮挂面箱板纸的制备工艺，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆以及填料混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆以及干强剂混合作为面层浆料；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
所述干强剂包括以下重量份数的原料：纳米陶瓷2份、纳米二氧化硅2份、羧甲基纤维素钠10份、壳聚糖1份和玻璃纤维15份。
所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
所述填料包括以下重量份数的原料：：高岭土50份、滑石粉30份、碳酸氢钠1份、聚乙烯10份、丁基橡胶10份和瓜尔胶8份。所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
实施例2
一种牛皮挂面箱板纸的制备工艺，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆以及填料混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆以及干强剂混合作为面层浆料；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
所述干强剂包括以下重量份数的原料：纳米陶瓷6份、纳米二氧化硅6份、羧甲基纤维素钠5份、壳聚糖3份和玻璃纤维10份。
所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
所述填料包括以下重量份数的原料：：高岭土60份、滑石粉25份、碳酸氢钠4份、聚乙烯20份、丁基橡胶20份和瓜尔胶4份。所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
实施例3
一种牛皮挂面箱板纸的制备工艺，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆以及填料混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆以及干强剂混合作为面层浆料；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
所述干强剂包括以下重量份数的原料：纳米陶瓷4份、纳米二氧化硅4份、羧甲基纤维素钠8份、壳聚糖2份和玻璃纤维12份。
所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
所述填料包括以下重量份数的原料：：高岭土52份、滑石粉28份、碳酸氢钠2份、聚乙烯15份、丁基橡胶15份和瓜尔胶6份。所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
实施例4
一种牛皮挂面箱板纸的制备工艺，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆以及填料混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆以及干强剂混合作为面层浆料；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
所述干强剂包括以下重量份数的原料：纳米陶瓷3份、纳米二氧化硅3份、羧甲基纤维素钠6份、壳聚糖1份和玻璃纤维14份。
所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
所述填料包括以下重量份数的原料：：高岭土56份、滑石粉26份、碳酸氢钠3份、聚乙烯18份、丁基橡胶18份和瓜尔胶7份。所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
以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变形，这些改进和变形也应视为本发明的保护范围。

Claims (5)

1.一种牛皮挂面箱板纸的制备工艺，其特征是，包括以下几个步骤：
（1）制浆：将废纸置于碎浆机中打浆，分级后得到长纤维浆、中纤维浆和短纤维浆，将重量比为9:1的长纤维浆和短纤维浆混合作为底层浆料，将重量比为4:1的中纤维浆和短纤维浆混合作为芯层浆料，将重量比为5:1:1短纤维浆、中纤维浆和长纤维浆混合作为面层浆料；所述面层浆料中还加入干强剂；所述干强剂包括以下重量份数的原料：纳米陶瓷2-6份、纳米二氧化硅2-6份、羧甲基纤维素钠5-10份、壳聚糖1-3份和玻璃纤维10-15份；
（2）造纸：将所述面层浆料、芯层浆料和底层浆料依次通过流浆箱喷涂至成型网后复合成一体，然后经过压榨脱水烘干后，获得原纸；
（3）施胶：对原纸进行表面喷淋施胶，得到最后的成品挂面箱板纸。
2.根据权利要求1所述的一种牛皮挂面箱板纸的制备工艺，其特征是，所述干强剂是通过以下步骤获得的：将纳米陶瓷、纳米二氧化硅和羧甲基纤维素钠置于超声波中分散30-40min；再加入玻璃纤维超声20-30min；最后加入壳聚糖超声20-30min，得到所述干强剂。
3.根据权利要求1所述的一种牛皮挂面箱板纸的制备工艺，其特征是，所述底层浆料与填料混合后再进入流浆箱。
4.根据权利要求3所述的一种牛皮挂面箱板纸的制备工艺，其特征是，所述填料包括以下重量份数的原料：高岭土50-60份、滑石粉25-30份、碳酸氢钠1-4份、聚乙烯10-20份、丁基橡胶10-20份和瓜尔胶4-8份。
5.根据权利要求4所述的一种牛皮挂面箱板纸的制备工艺，其特征是，所述填料是通过以下步骤获得的：将丁基橡胶颗粒加热至熔融状态，加入高岭土、滑石粉和瓜尔胶，搅拌混合后加入碳酸氢钠和聚乙烯，混合后置于造粒机中得到所述填料。
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