CN108035193A - 一种用于真空镀铝的原纸的生产方法 - Google Patents

一种用于真空镀铝的原纸的生产方法 Download PDF

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CN108035193A
CN108035193A CN201810037744.9A CN201810037744A CN108035193A CN 108035193 A CN108035193 A CN 108035193A CN 201810037744 A CN201810037744 A CN 201810037744A CN 108035193 A CN108035193 A CN 108035193A
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张树行
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    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/675—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
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    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
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    • D21H21/10—Retention agents or drainage improvers
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Abstract

本发明公开了一种用于真空镀铝的原纸的生产方法，先将硝酸钙、磷酸氢二钠分别在于阔叶木浆、针叶木浆中溶解后混合，通过仿生矿化作用，在木浆纤维内部以及表面孔隙内生成羟基磷灰石，然后将得到的改性纸浆与填料、助留剂和施胶剂混合抄造得到未涂布纸张，最后将苯丙乳液、聚乙烯醇溶液和硅溶胶混合得到的涂布液均匀涂覆未涂布纸张表面，烘干后得到真空镀铝原纸。本发明生产的真空镀铝原纸具有良好的表面平整性、光泽以及印刷适性，适合用于包装印刷领域。

Description

一种用于真空镀铝的原纸的生产方法
技术领域
本发明涉及纸类加工技术领域，尤其涉及一种用于真空镀铝的原纸的生产方法。
背景技术
镀铝纸主要由原纸、铝层和涂层组成，因光泽度和平滑度好，柔韧性好，喷铝层牢度高，美观环保，同时有良好的印刷性能和机械加工性能，因此在包装材料领域得到广泛的应用。镀铝纸按其生产工艺分为直接法（纸面镀铝）和转移法（膜面镀铝），其中直接法是通过将纸直接置于真空镀铝机进行镀铝，由于镀铝层沿着纸面纤维的疏松结构，表面呈细微孔粗糙，得到的铝膜表面粗糙，平滑度较差，其平整度无法适应包装的印刷，导致其应用范围受到限制。直接法生产镀铝纸的质量受到原纸性能的影响很大，为了提高其铝膜的使用性能，往往在镀铝前先对纸表面进行涂覆处理，以提高纸张表面平整性、光亮度，但是这种方法对镀铝纸性能的提升有限。为了进一步改善直接法生产镀铝纸的性能，使其能适应包装印刷材料的要求，有必要对现有真空镀铝原纸的加工方法作出改进。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种具有良好的表面平整性、光泽度，适合用于包装印刷的真空镀铝原纸的生产方法。
本发明是通过以下技术方案实现的：
一种用于真空镀铝的原纸的生产方法，包括以下步骤：
（1）将相当于阔叶木浆重量0.4-0.5%的硝酸钙加入阔叶木浆中溶解完全，将相当于针叶木浆重量0.15-0.25%的磷酸氢二钠加入针叶木浆中溶解完全，然后取同样重量的阔叶木浆和针叶木浆混合均匀得到混合浆，先将pH调至9-10并于35-37℃保温矿化24-48h，然后将pH调至中性，得到改性纸浆；
（2）向步骤（1）得到的改性纸浆中加入相当于改性纸浆绝干浆重量10-30%的填料、相当于改性纸浆绝干浆重量0.5-1%的助留剂和相当于改性纸浆绝干浆重量0.05-0.1%的施胶剂，经过抄造，得到未涂布纸张；
（3）将苯丙乳液、相当于苯丙乳液重量30-50%的聚乙烯醇溶液和相当于苯丙乳液重量10-15%的硅溶胶混合得到涂布液，然后将涂布液均匀涂覆在步骤（2）得到的未涂布纸张表面，烘干后得到真空镀铝原纸。
所述针叶木浆的浓度为5-10%，阔叶木浆的浓度为5-10%。
所述填料为滑石粉或者碳酸钙。
所述助留剂为阳离子淀粉。
所述施胶剂为烷基烯酮二聚体。
所述苯丙乳液的固含量为40-50%。
所述聚乙烯醇溶液的质量分数为4-8%。
所述硅溶胶的固含量为30-40%。
本发明的优点是：
本发明先将硝酸钙、磷酸氢二钠分别在于阔叶木浆、针叶木浆中溶解后混合，使钙离子渗透在木浆纤维表面以及内部孔隙中，通过仿生矿化作用，在木浆纤维内部以及表面孔隙内生成羟基磷灰石，然后将得到的改性纸浆与填料、助留剂和施胶剂混合抄造得到未涂布纸张，最后将苯丙乳液、聚乙烯醇溶液和硅溶胶混合得到的涂布液均匀涂覆未涂布纸张表面，烘干后得到真空镀铝原纸。本发明通过仿生矿化的方法在纸张纤维的孔隙中生长羟基磷灰石，结合涂布液中的硅溶胶的填充作用，有效减少纸张表面的微孔结构，从而提高纸张的平整性以及光泽度，改善镀铝后铝膜的平滑度，使镀铝纸的性能得到提升。本发明生产的真空镀铝原纸具有良好的表面平整性、光泽以及印刷适性，适合用于包装印刷领域。
具体实施方式
一种用于真空镀铝的原纸的生产方法，包括以下步骤：
（1）将相当于阔叶木浆重量0.4%的硝酸钙加入阔叶木浆中溶解完全，将相当于针叶木浆重量0.15%的磷酸氢二钠加入针叶木浆中溶解完全，然后取同样重量的阔叶木浆和针叶木浆混合均匀得到混合浆，先将pH调至9并于35℃保温矿化24h，然后将pH调至中性，得到改性纸浆；
（2）向步骤（1）得到的改性纸浆中加入相当于改性纸浆绝干浆重量10%的填料、相当于改性纸浆绝干浆重量0.5%的助留剂和相当于改性纸浆绝干浆重量0.05%的施胶剂，经过抄造，得到未涂布纸张；
（3）将苯丙乳液、相当于苯丙乳液重量30%的聚乙烯醇溶液和相当于苯丙乳液重量10%的硅溶胶混合得到涂布液，然后将涂布液均匀涂覆在步骤（2）得到的未涂布纸张表面，烘干后得到真空镀铝原纸。
所述针叶木浆的浓度为5%，阔叶木浆的浓度为5%。
所述填料为滑石粉。
所述助留剂为阳离子淀粉。
所述施胶剂为烷基烯酮二聚体。
所述苯丙乳液的固含量为40%。
所述聚乙烯醇溶液的质量分数为4%。
所述硅溶胶的固含量为30%。

Claims (8)

1.一种用于真空镀铝的原纸的生产方法，其特征在于，包括以下步骤：
（1）将相当于阔叶木浆重量0.4-0.5%的硝酸钙加入阔叶木浆中溶解完全，将相当于针叶木浆重量0.15-0.25%的磷酸氢二钠加入针叶木浆中溶解完全，然后取同样重量的阔叶木浆和针叶木浆混合均匀得到混合浆，先将pH调至9-10并于35-37℃保温矿化24-48h，然后将pH调至中性，得到改性纸浆；
（2）向步骤（1）得到的改性纸浆中加入相当于改性纸浆绝干浆重量10-30%的填料、相当于改性纸浆绝干浆重量0.5-1%的助留剂和相当于改性纸浆绝干浆重量0.05-0.1%的施胶剂，经过抄造，得到未涂布纸张；
（3）将苯丙乳液、相当于苯丙乳液重量30-50%的聚乙烯醇溶液和相当于苯丙乳液重量10-15%的硅溶胶混合得到涂布液，然后将涂布液均匀涂覆在步骤（2）得到的未涂布纸张表面，烘干后得到真空镀铝原纸。
2.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述针叶木浆的浓度为5-10%，阔叶木浆的浓度为5-10%。
3.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述填料为滑石粉或者碳酸钙。
4.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述助留剂为阳离子淀粉。
5.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述施胶剂为烷基烯酮二聚体。
6.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述苯丙乳液的固含量为40-50%。
7.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述聚乙烯醇溶液的质量分数为4-8%。
8.根据权利要求1所述的一种用于真空镀铝的原纸的生产方法，其特征在于，所述硅溶胶的固含量为30-40%。
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CN114059389A (zh) * 2020-07-30 2022-02-18 湖南中烟工业有限责任公司 一种直镀铝内衬纸及其制备方法

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CN105088869A (zh) * 2015-08-04 2015-11-25 浙江中烟工业有限责任公司 一种有机-无机纳米纤维复合纸及其制备方法和应用
CN106012677A (zh) * 2016-05-31 2016-10-12 中国科学院上海硅酸盐研究所 纳米银复合羟基磷灰石超长纳米线抗菌纸
CN106676947A (zh) * 2016-12-02 2017-05-17 中国科学院上海硅酸盐研究所 一种无机耐火纸及其制备方法和应用

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CN101015969A (zh) * 2007-03-09 2007-08-15 石家庄中康纸业有限公司 水印高清晰度铜版纸及其制作工艺
CN104018396A (zh) * 2014-06-24 2014-09-03 岳阳林纸股份有限公司 一种真空镀铝原纸及其制造方法
CN105088869A (zh) * 2015-08-04 2015-11-25 浙江中烟工业有限责任公司 一种有机-无机纳米纤维复合纸及其制备方法和应用
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CN106676947A (zh) * 2016-12-02 2017-05-17 中国科学院上海硅酸盐研究所 一种无机耐火纸及其制备方法和应用

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114059389A (zh) * 2020-07-30 2022-02-18 湖南中烟工业有限责任公司 一种直镀铝内衬纸及其制备方法

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