CN110564317B - 高韧性触感膜及其生产方法 - Google Patents

高韧性触感膜及其生产方法 Download PDF

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CN110564317B
CN110564317B CN201910975940.5A CN201910975940A CN110564317B CN 110564317 B CN110564317 B CN 110564317B CN 201910975940 A CN201910975940 A CN 201910975940A CN 110564317 B CN110564317 B CN 110564317B
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邵峥
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Abstract

本发明公开了一种高韧性触感膜及其生产方法，高韧性触感膜包括基层，基层的上下两面均粘有一层离型膜，两离型膜的外表面均涂有一层触感膜层；基层由以下质量比的原料组成：聚丙烯82‑88％，苯乙烯‑丁二烯共聚物6‑10％，乙烯‑醋酸乙烯共聚物1‑3％，纳米碳酸钙3‑5％，石蜡0.5‑1.5％；触感膜层由以下质量比的原料组成：水性聚氨酯78‑82％，二丙二醇甲醚2‑4％，醇酯十二2‑4％，水10‑14％，聚醚型聚氨酯增稠剂0.3‑0.7％，消泡剂0.3‑0.7％，有机硅表面活性剂0.5‑1.5％。由此设计的高韧性触感膜使用方便，且韧性好。

Description

高韧性触感膜及其生产方法
技术领域
本发明涉及触感膜技术领域，具体讲是一种高韧性触感膜及其生产方法。
背景技术
触感膜也叫柔感膜，是一种表面有特殊丝绒光滑、细腻触感的贴合专用哑光膜，主要通过在薄膜表面涂布触感油实现，可用于奢侈品包装，高档书刊包装，高档吊牌等方面。触感膜在与物品结合时，一般是才用加热加压的的覆膜工艺将触感膜复合到物品表面，覆膜需要配合机器使用，人们无法直接拿着触感膜将触感膜贴到物品上使用，而且目前的触感膜韧性较差。
发明内容
鉴于上述现有技术的缺陷，本发明的一个目的在于：提供一种高韧性触感膜。
为解决上述问题，本发明的技术解决方案是：高韧性触感膜，包括基层，所述基层的上下两面均粘有一层离型膜，两离型膜的外表面均涂有一层触感膜层；
所述基层由以下质量比的原料组成：聚丙烯82-88％，苯乙烯-丁二烯共聚物6-10％，乙烯-醋酸乙烯共聚物1-3％，纳米碳酸钙3-5％，石蜡0.5-1.5％；
所述触感膜层由以下质量比的原料组成：水性聚氨酯78-82％，二丙二醇甲醚2-4％，醇酯十二2-4％，水10-14％，聚醚型聚氨酯增稠剂0.3-0.7％，消泡剂0.3-0.7％，有机硅表面活性剂0.5-1.5％。
进一步地，所述基层与离型膜之间具有胶粘剂层。
进一步地，所述胶粘剂层为有机硅压敏胶。
本发明还提供一种上述高韧性触感膜的其制备方法，包括以下步骤：
(1)将聚丙烯、苯乙烯-丁二烯共聚物倒入高速搅拌机搅拌10-15分钟，搅拌温度为60-70℃，然后再将乙烯-醋酸乙烯共聚物、纳米碳酸钙以及石蜡倒入高速搅拌机与聚丙烯、苯乙烯-丁二烯共聚物混合，搅拌2-3分钟后出料输送至双螺杆挤出机，双螺杆挤出机将混合好的物料挤出塑化，挤出的物料经水槽冷却、空气冷却后通过拉伸机拉制成薄膜，制得基层；
(2)基层通过输送辊进行输送，并在输送的过程中在基层的上下两面均涂上一层有机硅压敏胶，形成胶粘剂层；
(3)离型膜通过输送辊进行输送，在输送的过程中，在基层的上下两面的胶粘剂层上均粘上一层离型膜；
(4)将二丙二醇甲醚、醇酯十二、水、聚醚型聚氨酯增稠剂、消泡剂、有机硅表面活性剂加入水性聚氨酯中混合均匀，静置20-24小时，制得触感油，在两离型膜的表面均涂上一层触感油，涂好后进行干燥处理，使得离型膜表面形成一层触感膜层；
(5)将产品进行收卷。
进一步地，步骤(4)中，干燥处理时在100-110℃的温度下烘烤2-3分钟。
本发明的有益效果是：使用时，人们可以将高韧性触感膜其中一面的离型膜撕下，然后将剩下的部分贴到需要使用的物品上，因为高韧性触感膜的上下两面都有触感膜层，所以可以避免因其中一面的触感膜层破损时，另外一面的触感膜层还是可以继续使用；苯乙烯-丁二烯共聚物具有高弹性、耐低温等特性，可以较好地增韧聚丙烯，纳米碳酸钙可改善母料的流变性，提高产品成型性，用作聚丙烯填料具有增韧补强的作用，提高聚丙烯的弯曲强度和弯曲弹性模量，提高热变形温度和尺寸稳定性。
附图说明
图1为本发明高韧性触感膜的结构示意图。
图中所示：1—基层，2—胶粘剂层，3—离型膜，4—触感膜层。
具体实施方式
为比较直观、完整地理解本发明的技术方案，现就结合本发明附图进行非限制性的特征说明如下：
如图1所示，高韧性触感膜，包括基层1，基层1的上下两面均粘有一层离型膜3，即基层1与离型膜3之间具有胶粘剂层2，胶粘剂层2为有机硅压敏胶，两离型膜3的外表面均涂有一层触感膜层4；
基层1由以下质量比的原料组成：聚丙烯85％，苯乙烯-丁二烯共聚物8％，乙烯-醋酸乙烯共聚物2％，纳米碳酸钙4％，石蜡1％；
触感膜层4由以下质量比的原料组成：水性聚氨酯80％，二丙二醇甲醚3％，醇酯十二3％，水12％，聚醚型聚氨酯增稠剂0.5％，消泡剂0.5％，有机硅表面活性剂1％。消泡剂为Tego Foamex825。
上述高韧性触感膜的制备方法包括以下步骤：
(1)将聚丙烯、苯乙烯-丁二烯共聚物倒入高速搅拌机搅拌15分钟，搅拌温度为70℃，通过高速搅拌，将聚丙烯、苯乙烯-丁二烯共聚物在高速搅拌的作用下，与高速搅拌机内壁和搅拌器产生摩擦热，物料温度升高；然后再将混合均匀的乙烯-醋酸乙烯共聚物、纳米碳酸钙以及石蜡倒入高速搅拌机与聚丙烯、苯乙烯-丁二烯共聚物混合，石蜡融化，使纳米碳酸钙均匀地分散在聚丙烯、苯乙烯-丁二烯共聚物表面，搅拌3分钟后出料输送至双螺杆挤出机，双螺杆挤出机将混合好的物料挤出塑化，挤出的物料经水槽冷却、空气冷却后通过拉伸机拉制成薄膜，制得基层1；
(2)基层1通过输送辊进行输送，并在输送的过程中在基层1的上下两面均涂上一层有机硅压敏胶，形成胶粘剂层2；
(3)离型膜3通过输送辊进行输送，在输送的过程中，在基层1的上下两面的胶粘剂层2上均粘上一层离型膜3；
(4)将醇酯十二、用水稀释后的二丙二醇甲醚、聚醚型聚氨酯增稠剂、消泡剂、有机硅表面活性剂加入水性聚氨酯中混合均匀，静置24小时，制得触感油，二丙二醇甲醚起到助溶效果；在两离型膜3的表面均涂上一层触感油，涂好后进行干燥处理，干燥处理时在100-110℃的温度下烘烤3分钟，使得离型膜3表面形成一层触感膜层4；
(5)将产品进行收卷。
使用时，人们可以将高韧性触感膜其中一面的离型膜3撕下，然后将剩下的部分贴到需要使用的物品上，因为高韧性触感膜的上下两面都有触感膜层4，所以可以避免因其中一面的触感膜层4破损时，另外一面的触感膜层4还是可以继续使用；苯乙烯-丁二烯共聚物具有高弹性、耐低温等特性，可以较好地增韧聚丙烯，纳米碳酸钙可改善母料的流变性，提高产品成型性，用作聚丙烯填料具有增韧补强的作用，提高聚丙烯的弯曲强度和弯曲弹性模量，提高热变形温度和尺寸稳定性。

Claims (4)

1.高韧性触感膜，包括基层，其特征在于：所述基层的上下两面均粘有一层离型膜，两离型膜的外表面均涂有一层触感膜层；
所述基层由以下质量比的原料组成：聚丙烯82-88％，苯乙烯-丁二烯共聚物6-10％，乙烯-醋酸乙烯共聚物1-3％，纳米碳酸钙3-5％，石蜡0.5-1.5％；
所述触感膜层由以下质量比的原料组成：水性聚氨酯78-82％，二丙二醇甲醚2-4％，醇酯十二2-4％，水10-14％，聚醚型聚氨酯增稠剂0.3-0.7％，消泡剂0.3-0.7％，有机硅表面活性剂0.5-1.5％；
高韧性触感膜的制备方法包括以下步骤：
(1)将聚丙烯、苯乙烯-丁二烯共聚物倒入高速搅拌机搅拌10-15分钟，搅拌温度为60-70℃，然后再将乙烯-醋酸乙烯共聚物、纳米碳酸钙以及石蜡倒入高速搅拌机与聚丙烯、苯乙烯-丁二烯共聚物混合，搅拌2-3分钟后出料输送至双螺杆挤出机，双螺杆挤出机将混合好的物料挤出塑化，挤出的物料经水槽冷却、空气冷却后通过拉伸机拉制成薄膜，制得基层；
(2)基层通过输送辊进行输送，并在输送的过程中在基层的上下两面均涂上一层有机硅压敏胶，形成胶粘剂层；
(3)离型膜通过输送辊进行输送，在输送的过程中，在基层的上下两面的胶粘剂层上均粘上一层离型膜；
(4)将二丙二醇甲醚、醇酯十二、水、聚醚型聚氨酯增稠剂、消泡剂、有机硅表面活性剂加入水性聚氨酯中混合均匀，静置20-24小时，制得触感油，在两离型膜的表面均涂上一层触感油，涂好后进行干燥处理，使得离型膜表面形成一层触感膜层；
(5)将产品进行收卷。
2.根据权利要求1所述的高韧性触感膜，其特征在于：所述基层与离型膜之间具有胶粘剂层。
3.根据权利要求2所述的高韧性触感膜，其特征在于：所述胶粘剂层为有机硅压敏胶。
4.根据权利要求1所述的高韧性触感膜，其特征在于：步骤(4)中，干燥处理时在100-110℃的温度下烘烤2-3分钟。
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