CN109536064A - 一种玻璃保护膜 - Google Patents

一种玻璃保护膜 Download PDF

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CN109536064A
CN109536064A CN201811444592.0A CN201811444592A CN109536064A CN 109536064 A CN109536064 A CN 109536064A CN 201811444592 A CN201811444592 A CN 201811444592A CN 109536064 A CN109536064 A CN 109536064A
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洪立志
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DONGGUAN HANGDA ELECTRONIC Co Ltd
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Abstract

本发明公开了一种用于手机等电子产品玻璃屏幕的保护膜，其包括：基材层，于所述的基材层的上表面依次附着有粘胶层和离型膜，所述的粘胶层的组分和重量配比为：乙酸乙酯：55‑65％；甲基苯丙烯酸双酯：12‑18％；聚氨酯：8‑12％；三氯甲烷：10‑15％；甲苯二异氰酸酯：5‑8％。采用上述技术方案后，本发明与现有技术相比较具有如下有益效果：本发明所使用的粘胶层具有较好的稳定性能，即便长时间使用，仍能保持稳定的粘合能力，同时可以顺利的剥离，不会出现现有丙烯酸胶水因为长时间使用，胶水固化难以剥离的问题。

Description

一种玻璃保护膜
技术领域：
本发明涉及保护膜产品技术领域，特指一种用于手机等电子产品玻璃屏幕的保护膜。
背景技术：
随着移动通讯时代的来临，手机等移动通讯产品中各种通讯信号越来越复杂，各种通讯信号不仅包括一般的通讯信号，还包括NFC(近距离无线通讯)、WiFi 等通讯传输信号。这就对手机壳体的要求更好。传统的金属外壳会对各种通讯信号形成屏蔽，导致信号的灵敏度降低。所以作为非金属材料的玻璃壳体将会是金属壳体的良好替代材料。
目前的移动通讯终端产品中，其面板通常采用的玻璃材料，为了对玻璃面板进行保护，通常使用者会在玻璃面板的表面贴合一层保护膜。这种保护膜通常采用光学PET材料制作，厚度大约在0.3-1.5mm。通过保护膜对产品玻璃面板进行保护。
通常的保护膜结构如下，PET作为基材层，在基材层的上表面涂布有粘胶层，在粘胶层的上面覆盖一层离型层。使用时，将离型层剥离后，将粘胶层一面贴合在玻璃面板上即可。保护膜质量的好坏直接与粘胶层的性能相关。通常要求保护膜在不同环境下长时间使用后，仍能保持良好的清晰度，不会出现发黄、起雾、剥离力变化等情况。目前常见的保护膜产品中粘胶层所使用的胶水多采用环氧丙烯酸类树脂胶水，这种胶水粘合力强，并且容易固化，导致保护膜长期使用后难以剥离的问题。基于以上问题，本发明人提出了以下技术方案。
发明内容：
本发明所要解决的技术问题在于提供一种制作工艺简单，并且产品性能稳定的玻璃保护膜。
为了解决上述技术问题，本发明采用了下述技术方案：一种玻璃保护膜包括：基材层，于所述的基材层的上表面依次附着有粘胶层和离型膜，所述的粘胶层的组分和重量配比为：乙酸乙酯：55-65％；甲基苯丙烯酸双酯：12-18％；聚氨酯： 8-12％；三氯甲烷：10-15％；甲苯二异氰酸酯：5-8％。
进一步而言，上述技术方案中，所述的基材层采用PET光学基材膜。
进一步而言，上述技术方案中，所述的粘胶层的组分和重量配比为：乙酸乙酯：60％；甲基苯丙烯酸双酯：15％；聚氨酯：10.9％；三氯甲烷：12.3％；甲苯二异氰酸酯：6.8％。
采用上述技术方案后，本发明与现有技术相比较具有如下有益效果：本发明所使用的粘胶层具有较好的稳定性能，即便长时间使用，仍能保持稳定的粘合能力，同时可以顺利的剥离，不会出现现有丙烯酸胶水因为长时间使用，胶水固化难以剥离的问题。
具体实施方式：
下面结合具体实施例对本发明进一步说明。
本发明为一种玻璃保护膜，其包括：基材层，于所述的基材层的上表面依次附着有粘胶层和离型膜。
基材层采用PET光学基材膜，PET光学基材膜是一种耐高温的聚酯薄膜，其物理特定优异，并且光学性能稳定，透明度较高。目前已经广泛应用于电子产品保护膜产品中。当然，本发明的基材层也可采用PVC薄膜。
离型膜3一般采用PE离型膜即可。
所述的粘胶层的组分和重量配比为：
乙酸乙酯：55-65％；
甲基苯丙烯酸双酯：12-18％；
聚氨酯：8-12％；
三氯甲烷：10-15％；
甲苯二异氰酸酯：5-8％。
本发明中粘胶层中乙酸乙酯作为本发明的溶剂，其具有易挥发、快干性的特点，便于后期的烘干作业。
甲基苯丙烯酸双酯作为粘胶层中的主要粘性物质，甲基苯丙烯酸双酯作为一种丙烯酸类树脂胶水，其与作为固化剂的甲苯二异氰酸酯进行铰链，形成胶黏性能。通常，现有的同类产品中，采用常规的丙烯酸类树脂，并且其胶水中丙烯酸类树脂含量较高，所以导致最终的保护膜粘性较大，并且这种胶水容易固化，最终导致保护膜难以被剥离。所以，本发明经过测试，采用甲基苯丙烯酸双酯，并且控制其含量在12-18％的范围内。这样即保证最终形成的保护膜具有足够的粘性，同时确保即便在长时间使用后，也能够剥离。
本发明中同时还添加了聚氨酯，本发明所述的聚氨酯为含有氨酯基和异氰酸酯基聚氨酯胶水。由于聚氨酯胶水具有较强的柔韧性，可以承受冲击震动和弯曲疲劳，可进一步提升本发明保护膜的性能。
本发明粘胶层中所添加的三氯甲烷作为催化剂。
本发明的制作方法为：按照上述重量配比制作胶水，即将乙酸乙酯、甲基苯丙烯酸双酯、聚氨酯、三氯甲烷、甲苯二异氰酸酯混合，并搅拌10-30分钟至原料混合均匀、反应后得到相应的胶水。然后，将胶水通过涂布机涂布在基材层1 的表面，然后经过烘箱对基材层表面的胶水进行烘干。烘干采用热风通道烘干，通道内的温度在80-100摄氏度之间，通过热风通道将多余的溶剂挥发。经过烘干处理后，在基材层的上表面形成粘胶层，该粘胶层的厚度通常在涂布厚度为 1-3微米。最后，通过薄膜复合设备将离型层复合在粘胶层上即可。使用时，将离型层撕下，然后将粘胶层一面贴合在玻璃表面即可，最终实现对玻璃的保护。较佳实施例：
本发明的粘胶层组分采用以下重量配比时，是本发明的较佳实施例。
乙酸乙酯：60％；
甲基苯丙烯酸双酯：15％；
聚氨酯：10.9％；
三氯甲烷：12.3％；
甲苯二异氰酸酯：6.8％。
经过测试，采用该较佳实施例后，得到的保护膜不仅具有良好的粘合力，并且长时间使用后(1000小时)，仍可以将基材层从玻璃表面顺利剥离。
当然，以上所述仅为本发明的具体实施例而已，并非来限制本发明实施范围，凡依本发明申请专利范围所述构造、特征及原理所做的等效变化或修饰，均应包括于本发明申请专利范围内。

Claims (3)

1.一种玻璃保护膜，其包括：基材层，于所述的基材层的上表面依次附着有粘胶层和离型膜，其特征在于：
所述的粘胶层的组分和重量配比为：
乙酸乙酯：55-65％；
甲基苯丙烯酸双酯：12-18％；
聚氨酯：8-12％；
三氯甲烷：10-15％；
甲苯二异氰酸酯：5-8％。
2.根据权利要求1所述的一种玻璃保护膜，其特征在于：所述的基材层采用PET光学基材膜。
3.根据权利要求1所述的一种玻璃保护膜，其特征在于：所述的粘胶层的组分和重量配比为：
乙酸乙酯：60％；
甲基苯丙烯酸双酯：15％；
聚氨酯：10.9％；
三氯甲烷：12.3％；
甲苯二异氰酸酯：6.8％。
CN201811444592.0A 2018-11-29 2018-11-29 一种玻璃保护膜 Pending CN109536064A (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103788886A (zh) * 2014-02-17 2014-05-14 汕头可逸塑胶有限公司 Ogs制程用抗静电耐酸保护膜
CN103952089A (zh) * 2014-03-14 2014-07-30 新纶科技（常州）有限公司 一种耐高温pu保护膜
CN108676513A (zh) * 2018-06-06 2018-10-19 芜湖夏鑫新型材料科技有限公司 一种手机玻璃保护膜及其制备方法
CN108707431A (zh) * 2018-06-06 2018-10-26 芜湖夏鑫新型材料科技有限公司 一种耐高温高湿保护膜及其制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103788886A (zh) * 2014-02-17 2014-05-14 汕头可逸塑胶有限公司 Ogs制程用抗静电耐酸保护膜
CN103952089A (zh) * 2014-03-14 2014-07-30 新纶科技（常州）有限公司 一种耐高温pu保护膜
CN108676513A (zh) * 2018-06-06 2018-10-19 芜湖夏鑫新型材料科技有限公司 一种手机玻璃保护膜及其制备方法
CN108707431A (zh) * 2018-06-06 2018-10-26 芜湖夏鑫新型材料科技有限公司 一种耐高温高湿保护膜及其制备方法

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席慧智 等: "《材料化学导论》", 31 August 2017, 哈尔滨工业大学出版社 *

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