CN112060730A - 环保热熔复合膜及制备方法 - Google Patents

环保热熔复合膜及制备方法 Download PDF

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CN112060730A
CN112060730A CN202010876897.XA CN202010876897A CN112060730A CN 112060730 A CN112060730 A CN 112060730A CN 202010876897 A CN202010876897 A CN 202010876897A CN 112060730 A CN112060730 A CN 112060730A
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罗雨之
张友辉
王勇
周德辉
吴幸溶
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Shanghai Chunyi Pharmaceutical Packaging Materials Co ltd
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Abstract

本发明公开了复合薄膜技术领域的一种环保热熔复合膜及制备方法。环保热熔复合膜包括耐磨涂层、热熔性树脂层和基材层，热熔性树脂通过挤出机熔融挤出热熔性EVA树脂与基材层一侧表面进行复合，热熔性树脂层表面涂覆耐磨涂层，其中热熔性树脂层由热熔性树脂粒子通过挤出机熔融挤出与基材层复合，热熔性树脂层表面涂覆有耐磨涂层，耐磨涂层经过UV固化处理，增强了硬化涂层与基材表面的附着性，使基材表面达到耐磨硬化的效果。

Description

环保热熔复合膜及制备方法
技术领域
本发明涉及复合薄膜技术领域的一种环保热熔复合膜及制备方法。
背景技术
随着高分子科学技术的发展以及生产生活中对产品轻量化的需求，各种薄膜产品已经广泛应用于社会生产生活中的各个领域。热熔性复合膜由基材薄膜与热熔树脂复合制成，是一种具有良好的力学性能、光学性、热性能及耐化学品性等。热熔性复合膜广泛应用于热熔性封装，然而在使用中塑料薄膜易被硬物锐器划伤，影响薄膜的使用功能。通过在材料表面实施附加的表面硬化涂层提高这些材料表面的硬度，使得这些高分子薄膜材料的耐擦伤功能得到完善，应用价值得以大幅提高。
发明内容
本发明的目的是针对现有技术中存在的问题，提供一种新型耐磨热熔复合膜及其制备方法。
本发明是通过以下技术方案实现的：
一种环保热熔复合膜，其特征在于：包括耐磨涂层、热熔性树脂层和基材层，热熔性树脂通过挤出机熔融挤出热熔性EVA树脂与基材层一侧表面进行复合，热熔性树脂层表面涂覆耐磨涂层；对上述技术方案做进一步的说明：所述的基材层为聚对苯二甲酸乙二醇酯、聚丙烯、聚氯乙烯、聚碳酸酯中的任意一种材料制成的薄膜，厚度为10-60um；对上述技术方案做进一步的说明：所述的热熔性树脂为乙烯-醋酸乙烯共聚物、聚乙烯、乙烯-丙烯酸共聚物树脂、聚烯烃树脂中的一种，厚度为30-90um；对上述技术方案做进一步的说明：所述耐磨涂层由有机高分子接枝纳米二氧化硅和光引发剂混合而成，通过UV固化在热熔性树脂层表面；对上述技术方案做进一步的说明：所述光引发剂为二苯甲酮、2-羟基-2-甲基-1-苯基丙酮中的一种；
环保热熔复合膜的制备方法包括以下步骤：
1)基材层表面预处理：基材层薄膜经电晕和AC剂底涂进行表面处理；
2)热熔性EVA树脂通过挤出机熔融挤出，与基材层进行复合，后经臭氧氧化处理，得到热熔性树脂层复合薄膜；
3)将有机高分子接枝纳米二氧化硅加入溶剂搅拌得到硬化液；加入光引发剂混合均匀得到硬化涂层，其中光引发剂选用二苯甲酮、2-羟基-2-甲基-1-苯基丙酮中的一种材料；
4)硬化涂层经混合后均匀以辊涂的方式涂布于基材表面，经UV紫外烘箱固化，涂布在热熔性树脂层表面，经烘箱烘干，形成耐磨涂层；
5)最后形成的环保热熔复合膜经冷却，收卷成型。
与现有技术相比本发明具有以下特点：采用有机高分子接枝纳米粒子溶液涂布在基材表面，然后通过UV固化的方法得到。采用新型硬化涂层，涂层溶液混合均匀，由于涂层经过UV固化处理，增强了硬化涂层与基材表面的附着性，使基材表面达到耐磨硬化的效果，提高热熔复合膜的实用性。
说明书附图
图1为环保热熔复合膜涂层示意图。
图中：基材层1、热熔性树脂层2和耐磨涂层3。
具体实施方式
下面结合附图对本发明的内容作进一步说明：
环保热熔复合膜由上之下依次为耐磨涂层、热熔性树脂层和基材层，基材层为聚对苯二甲酸乙二醇酯、聚丙烯、聚氯乙烯、聚碳酸酯薄膜中的一种，热熔性树脂层为乙烯-醋酸乙烯共聚物、聚乙烯、乙烯-丙烯酸共聚物树脂、聚烯烃树脂中的一种，热熔性树脂层由热熔性树脂粒子通过挤出机熔融挤出与基材层复合，热熔性树脂层表面涂覆有防刮擦涂层。
热熔复合膜的制备工艺包括以下步骤：
1)基材层薄膜经电晕和AC剂底涂处理进行表面处理；
2)通过挤出机熔融挤出热熔性EVA树脂与基材层薄膜的一侧表面进行复合，复合后经臭氧氧化处理；
3)将有机高分子接枝纳米二氧化硅加入溶剂搅拌得到硬化液，硬化液中加入光引发剂混合均匀得到硬化涂层，其中光引发剂选用二苯甲酮、2-羟基-2-甲基-1-苯基-1-丙酮中的一种材料；
4)硬化涂层经混合后均匀以辊涂的方式涂布于基材表面，经UV紫外烘箱固化，涂布在热熔性树脂层表面，经烘箱烘干，形成硬化涂层。
5)最后形成的防刮擦耐磨热熔复合膜经冷却，收卷成型，得到环保热熔复合膜。
以上所述仅为本发明较佳的具体实施方式；但本发明的保护范围并不局限于此。任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其
改进构思加以等同替换或改变，都应涵盖在本发明的保护范围内。

Claims (6)

1.一种环保热熔复合膜，其特征在于：包括耐磨涂层、热熔性树脂层和基材层，热熔性树脂通过挤出机熔融挤出热熔性EVA树脂与基材层一侧表面进行复合，热熔性树脂层表面涂覆耐磨涂层。
2.根据权利要求1所述的环保热熔复合膜，其特征在于：所述的基材层为聚对苯二甲酸乙二醇酯、聚丙烯、聚氯乙烯、聚碳酸酯中的任意一种材料制成的薄膜，厚度为10-60um。
3.根据权利要求1所述的环保热熔复合膜，其特征在于：所述的热熔性树脂为乙烯-醋酸乙烯共聚物、聚乙烯、乙烯-丙烯酸共聚物树脂、聚烯烃树脂中的一种，厚度为30-90um。
4.根据权利要求1所述的环保热熔复合膜，其特征在于：所述耐磨涂层由有机高分子接枝纳米二氧化硅和光引发剂混合而成，通过UV固化在热熔性树脂层表面。
5.根据权利要求4所述的环保热熔复合膜，其特征在于：所述光引发剂为二苯甲酮、2-羟基-2-甲基-1-苯基丙酮中的一种。
6.一种环保热熔复合膜的制备方法，其特征在于：包括以下步骤：
1)基材层表面预处理：基材层薄膜经电晕和AC剂底涂表面处理；
2)热熔性EVA树脂通过挤出机熔融挤出，与基材层进行复合，后经臭氧氧化处理，得到热熔性树脂层复合薄膜；
3)将有机高分子接枝纳米二氧化硅加入溶剂搅拌得到硬化液；加入光引发剂混合均匀得到硬化涂层，其中光引发剂选用二苯甲酮、2-羟基-2-甲基-1-苯基丙酮中的一种材料；
4)硬化涂层经混合后均匀以辊涂的方式涂布于基材表面，经UV紫外烘箱固化，涂布在热熔性树脂层表面，经烘箱烘干，形成耐磨涂层；
5)最后形成的环保热熔复合膜经冷却，收卷成型。
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US4546036A (en) * 1983-12-22 1985-10-08 Minnesota Mining And Manufacturing Company Magnetic recording medium having opaque polyester film base
CN103832034A (zh) * 2014-03-07 2014-06-04 宜兴市王者塑封有限公司 用于光伏组件封装具有三层结构的pet复合膜及其制备方法
CN108481868A (zh) * 2018-03-15 2018-09-04 宜兴市王者塑封有限公司 防刮擦耐磨热熔复合膜及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546036A (en) * 1983-12-22 1985-10-08 Minnesota Mining And Manufacturing Company Magnetic recording medium having opaque polyester film base
CN103832034A (zh) * 2014-03-07 2014-06-04 宜兴市王者塑封有限公司 用于光伏组件封装具有三层结构的pet复合膜及其制备方法
CN108481868A (zh) * 2018-03-15 2018-09-04 宜兴市王者塑封有限公司 防刮擦耐磨热熔复合膜及其制备方法

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Application publication date: 20201211