CN106189888A - 便于剥离的增印保护膜 - Google Patents

便于剥离的增印保护膜 Download PDF

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CN106189888A
CN106189888A CN201610574885.5A CN201610574885A CN106189888A CN 106189888 A CN106189888 A CN 106189888A CN 201610574885 A CN201610574885 A CN 201610574885A CN 106189888 A CN106189888 A CN 106189888A
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cloudy
layer
coating
release paper
leaching membrane
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金闯
张庆杰
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Suzhou Sidike New Material Science and Technology Co Ltd
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Abstract

本发明公开一种便于剥离的增印保护膜，其基材层下表面通过有机硅压敏胶层与一雾面离型纸粘合连接，所述雾面离型纸由第一淋膜层、离型纸原纸层、第二淋膜层、雾面涂层和离型剂涂层依次层叠构成；制备工艺主要由下列步骤组成：将0.5份纳米SiO2粉体、0.45份纳米Al2O3粉体和0.35份硅烷偶联剂加入8~10份甲苯中进行超声波处理获得预分散液；将100份乙烯基硅氧烷、0.3份含氢硅氧烷加入120份丁酮中进行机械搅拌获得聚合物溶液；将步骤1的预分散液、步骤2的聚合物溶液混合并依次进行机械搅拌和超声波搅拌，从而获得调制后的聚合物溶液。本发明提高了与离型剂涂层接触的雾面涂层表面粗糙度均匀性，解决离型纸的淋膜层与离型剂涂层结合力不稳定的技术问题。

Description

便于剥离的增印保护膜
技术领域
本发明涉及一种保护膜，特别涉及一种便于剥离的增印保护膜。
背景技术
保护膜一般由基材层和涂覆在该基材层上的胶粘剂层构成。当保护膜用来保护各种薄膜面板例如手机触摸按键，薄膜开关等产品的表面时，需要在保护膜上印刷文字、图案等，传统的保护膜一般都没有经过耐磨增印处理，因此很难在保护膜上进行印刷作业；其次，增印保护膜中离型纸与涂覆有高粘度粘合剂的贴膜贴附时，容易导致离型纸上的离型剂涂层被粘附力更大的粘合剂带走，从而在贴膜的局部表面形成难以清理掉的离型剂涂层区域，破坏了贴膜整体的纯净、一致性。
发明内容
本发明提供一种便于剥离的增印保护膜，该便于剥离的增印保护膜使得有机硅胶面雾度效果好，使得胶面达到低反光效果；且提高了与离型剂涂层接触的雾面涂层表面粗糙度均匀性，解决离型纸的淋膜层与离型剂涂层结合力不稳定的技术问题，有利于剥离以及避免残留压敏胶和将离型剂残留于压敏胶层上。
为达到上述目的，本发明采用的技术方案是：一种便于剥离的增印保护膜，包括一基材层，此基材层上面涂覆一用于印刷油墨的增印涂层，此基材层下表面通过有机硅压敏胶层与一雾面离型纸粘合连接，所述雾面离型纸由第一淋膜层、离型纸原纸层、第二淋膜层、雾面涂层和离型剂涂层依次层叠构成，所述雾面涂层朝向所述离型剂涂层的表面的表面粗糙度为2.821um~3.324um；所述制备工艺主要由下列步骤组成：
第一步：在离型纸原纸的两侧表面，用淋膜机各淋膜一层淋膜层，然后冷却；
第二步：在任意一淋膜层上涂覆一层厚度为0.2～2微米的雾面涂层剂，该雾面涂层剂进一步通过以下工艺获得：
步骤1. 将0.5份纳米SiO2粉体、0.45份纳米Al2O3粉体和0.35份硅烷偶联剂加入8~10份甲苯中进行超声波处理获得预分散液；
步骤2. 将100份乙烯基硅氧烷、0.3份含氢硅氧烷加入120份丁酮中进行机械搅拌获得聚合物溶液；
步骤3. 将步骤1的预分散液、步骤2的聚合物溶液混合并依次进行机械搅拌和超声波搅拌，从而获得调制后的聚合物溶液；
步骤4. 在所述调制后的聚合物溶液加入0.2~0.5份铂金并依次进行机械搅拌和超声波搅拌获得所述雾面离型溶剂；
第三步：将离型纸的雾面涂层剂通过烘烤进行聚合反应得到雾面涂层；
第四步：在所述雾面涂层的表面涂覆一层离型剂涂层。
上述技术方案中进一步改进的技术方案如下：
1. 上述方案中，所述纳米SiO2粉体的直径范围为10~15nm，所述纳米Al2O3粉体的直径范围为25~35nm。
2. 上述方案中，所述第一、第二淋膜层的材质为聚对苯二甲酸乙二醇酯、聚丙烯、聚乙烯或者聚氯乙烯。
由于上述技术方案运用，本发明与现有技术相比具有下列优点和效果：
本发明便于剥离的增印保护膜，其特定直径和含量的纳米SiO2粉体、纳米Al2O3粉体在溶剂下与硅烷偶联剂经超声波共同作用，且机械搅拌和超声波搅拌组合，有利于纳米SiO2粉体、Al2O3粉体呈均匀分布，特定的聚合物溶液和预分散液采用不同的溶剂，降低纳米SiO2粉体、Al2O3颗粒的表面能，进一步利于粉体颗粒在溶剂中的分散，提高了与离型剂涂层接触的雾面涂层表面粗糙度均匀性，解决离型纸的淋膜层与离型剂涂层结合力不稳定的技术问题，有利于剥离以及避免残留压敏胶和将离型剂残留于压敏胶层上。
附图说明
附图1为本发明便于剥离的增印保护膜结构示意图；
附图2a为现有增印保护膜中雾面涂层微观形貌SEM测试图；
附图2b为本发明便于剥离的增印保护膜中雾面涂层微观形貌SEM测试图；
附图3为附图1的局部结构示意图。
以上附图中：1、基材层；2、增印涂层；3、有机硅压敏胶层；4、雾面离型纸；5、第一淋膜层；6、离型纸原纸层；7、第二淋膜层；8、雾面涂层；9、离型剂涂层。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例：一种便于剥离的增印保护膜，包括一基材层1，此基材层1上面涂覆一用于印刷油墨的增印涂层2，此基材层1下表面通过有机硅压敏胶层3与一雾面离型纸4粘合连接，所述雾面离型纸4由第一淋膜层5、离型纸原纸层6、第二淋膜层7、雾面涂层8和离型剂涂层9依次层叠构成，所述雾面涂层朝向离型剂涂层的表面的表面粗糙度为2.821μm ~3.324μm；所述制备工艺主要由下列步骤组成：
第一步：在离型纸原纸的两侧表面，用淋膜机各淋膜一层淋膜层，然后冷却；
第二步：在任意一淋膜层上涂覆一层厚度为0.2～2微米的雾面涂层剂，该雾面涂层剂进一步通过以下工艺获得：
步骤1. 将0.5份纳米SiO2粉体、0.45份纳米Al2O3粉体和0.35份硅烷偶联剂加入8~10份甲苯中进行超声波处理获得预分散液；
步骤2. 将100份乙烯基硅氧烷、0.3份含氢硅氧烷加入120份丁酮中进行机械搅拌获得聚合物溶液；
步骤3. 将步骤1的预分散液、步骤2的聚合物溶液混合并依次进行机械搅拌和超声波搅拌，从而获得调制后的聚合物溶液；
步骤4. 在所述调制后的聚合物溶液加入0.2~0.5份铂金并依次进行机械搅拌和超声波搅拌获得所述雾面离型溶剂；
第三步：将离型纸的雾面涂层剂通过烘烤进行聚合反应得到雾面涂层；
第四步：在所述雾面涂层的表面涂覆一层离型剂涂层。
上述纳米SiO2粉体的直径范围为12nm，所述纳米Al2O3粉体的直径范围为30nm。
上述实施例1中第一、第二淋膜层的材质分别为聚对苯二甲酸乙二醇酯、聚丙烯。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (3)

1.一种便于剥离的增印保护膜，包括一基材层（1），此基材层（1）上面涂覆一用于印刷油墨的增印涂层（2），此基材层（1）下表面通过有机硅压敏胶层（3）与一雾面离型纸（4）粘合连接，其特征在于：所述雾面离型纸（4）由第一淋膜层（5）、离型纸原纸层（6）、第二淋膜层（7）、雾面涂层（8）和离型剂涂层（9）依次层叠构成，所述雾面涂层朝向离型剂涂层的表面的表面粗糙度为2.821μm~3.324μm；所述制备工艺主要由下列步骤组成：
第一步：在离型纸原纸的两侧表面，用淋膜机各淋膜一层淋膜层，然后冷却；
第二步：在任意一淋膜层上涂覆一层厚度为0.2~2微米的雾面涂层剂，该雾面涂层剂进一步通过以下工艺获得：
步骤1. 将0.5份纳米SiO2粉体、0.45份纳米Al2O3粉体和0.35份硅烷偶联剂加入8~10份甲苯中进行超声波处理获得预分散液；
步骤2. 将100份乙烯基硅氧烷、0.3份含氢硅氧烷加入120份丁酮中进行机械搅拌获得聚合物溶液；
步骤3. 将步骤1的预分散液、步骤2的聚合物溶液混合并依次进行机械搅拌和超声波搅拌，从而获得调制后的聚合物溶液；
步骤4. 在所述调制后的聚合物溶液加入0.2~0.5份铂金并依次进行机械搅拌和超声波搅拌获得所述雾面离型溶剂；
第三步：将离型纸的雾面涂层剂通过烘烤进行聚合反应得到雾面涂层；
第四步：在所述雾面涂层的表面涂覆一层离型剂涂层。
2.根据权利要求1所述的便于剥离的增印保护膜，其特征在于：所述纳米SiO2粉体的直径范围为10~15nm，所述纳米Al2O3粉体的直径范围为25~35nm。
3.根据权利要求1所述的便于剥离的增印保护膜，其特征在于：所述第一、第二淋膜层的材质为聚对苯二甲酸乙二醇酯、聚丙烯、聚乙烯或者聚氯乙烯。
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