CN105415722A - 一种亚光镀铝聚酯薄膜的制备工艺 - Google Patents
一种亚光镀铝聚酯薄膜的制备工艺 Download PDFInfo
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Abstract
本发明公开了一种亚光镀铝聚酯薄膜的制备工艺,包括以下工艺步骤:制备聚酯、制膜、真空镀铝、分切。本发明是一种亚光镀铝聚酯薄膜的制备工艺,其采用特殊的处理工艺,将制得的亚光聚酯薄膜进行真空镀铝,使得得到的镀铝聚酯薄膜具有更好的亚光性,且弯曲后铝箔不会产生裂纹,提高亚光膜质量。
Description
技术领域
本发明涉及薄膜加工领域,具体涉及一种亚光镀铝聚酯薄膜的制备工艺。
背景技术
双向拉伸聚对苯二甲酸乙二醇酯薄膜(简称BOPET),具有优良的物理化学性能,可广泛用于诸多领域。包装工业一直以来对高透明、高光泽的双向拉伸聚酯薄膜有很大的需求,因为它可以使包装表面具光泽和吸引力。与之相对应,低光泽度的亚光薄膜可以使包装表面更具朦胧感和艺术性,更加刺激消费者的购买欲望,亚光膜除具有普通聚酯薄膜优越的化学物理性能外,主要还具有:高雾度,低光泽等特点,具有较好的镀铝和印刷性能。亚光膜适用于家用电器、电脑精密仪器设备等特殊高档标签的制作、室内亚光装饰材料和高档烟、酒等印刷包装、高档图书的覆膜应用等。本发明介绍了一种亚光镀铝聚酯薄膜的制备工艺,其采用特殊的处理工艺,将制得的亚光聚酯薄膜进行真空镀铝,使得得到的镀铝聚酯薄膜具有更好的亚光性,且弯曲后铝箔不会产生裂纹,提高亚光膜质量。
发明内容
针对现有技术的不足,本发明的目的在于提供一种亚光镀铝聚酯薄膜的制备工艺。
本发明解决的技术问题可以采用以下技术方案来实现:一种亚光镀铝聚酯薄膜的制备工艺,包括以下工艺步骤:
(1)制备聚酯:将二元酸、二元醇、添加剂分散液在催化剂的作用下先进行酯化反应,再加入稳定剂进行缩聚反应,得到聚酯;
(2)制膜:将聚酯经过干燥、270~290℃下熔融挤出,并在温度80~120℃、拉伸倍率3.0~4.0∶1下纵横双向拉伸,再热定型、松弛、冷却、牵引、收卷,制成单层或多层结构的亚光聚酯薄膜;
(3)真空镀铝:将亚光聚酯薄膜在真空镀铝机上进行真空镀铝后形成亚光膜,真空镀铝流程为基材放卷→抽真空→加热蒸发舟→送铝丝→蒸镀→冷却→展平→收卷,真空度为5.0×10-2Pa,蒸发舟温度控制在1500~1600℃,铝丝纯度不低于99.99%,送丝速度为1.8~2m/min,镀铝层厚度为380~400埃,收卷速度为400~500m/min;
(4)分切:将亚光膜进行分切,分切速度为400m/min。
优选的,所述二元酸为PTA或QTA,所述二元醇为乙二醇,所述二元酸与乙二醇的摩尔量之比为1∶1.5~1∶2.0。
优选的,所述添加剂分散液中的添加剂由质量含量60~80%高岭土和40~20%硫酸钡组成,所述添加剂分散液的分散溶剂为二元醇。
有益效果是:本发明是一种亚光镀铝聚酯薄膜的制备工艺,其采用特殊的处理工艺,将制得的亚光聚酯薄膜进行真空镀铝,使得得到的镀铝聚酯薄膜具有更好的亚光性,且弯曲后铝箔不会产生裂纹,提高亚光膜质量。
具体实施方式
下面详细说明本发明的优选实施方式。
本发明一种亚光镀铝聚酯薄膜的制备工艺的具体实施方式:一种亚光镀铝聚酯薄膜的制备工艺,包括以下工艺步骤:(1)制备聚酯:将二元酸、二元醇、添加剂分散液在催化剂的作用下先进行酯化反应,再加入稳定剂进行缩聚反应,得到聚酯;(2)制膜:将聚酯经过干燥、270~290℃下熔融挤出,并在温度80~120℃、拉伸倍率3.0~4.0∶1下纵横双向拉伸,再热定型、松弛、冷却、牵引、收卷,制成单层或多层结构的亚光聚酯薄膜;(3)真空镀铝:将亚光聚酯薄膜在真空镀铝机上进行真空镀铝后形成亚光膜,真空镀铝流程为基材放卷→抽真空→加热蒸发舟→送铝丝→蒸镀→冷却→展平→收卷,真空度为5.0×10-2Pa,蒸发舟温度控制在1500~1600℃,铝丝纯度不低于99.99%,送丝速度为1.8~2m/min,镀铝层厚度为380~400埃,收卷速度为400~500m/min;(4)分切:将亚光膜进行分切,分切速度为400m/min。所述二元酸为PTA或QTA,所述二元醇为乙二醇,所述二元酸与乙二醇的摩尔量之比为1∶1.5~1∶2.0。所述添加剂分散液中的添加剂由质量含量60~80%高岭土和40~20%硫酸钡组成,所述添加剂分散液的分散溶剂为二元醇。
经过上述工艺步骤后,得到亚光镀铝聚酯薄膜,其采用特殊的处理工艺,将制得的亚光聚酯薄膜进行真空镀铝,使得得到的镀铝聚酯薄膜具有更好的亚光性,且弯曲后铝箔不会产生裂纹,提高亚光膜质量。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (3)
1.一种亚光镀铝聚酯薄膜的制备工艺,其特征在于,包括以下工艺步骤:
(1)制备聚酯:将二元酸、二元醇、添加剂分散液在催化剂的作用下先进行酯化反应,再加入稳定剂进行缩聚反应,得到聚酯;
(2)制膜:将聚酯经过干燥、270~290℃下熔融挤出,并在温度80~120℃、拉伸倍率3.0~4.0∶1下纵横双向拉伸,再热定型、松弛、冷却、牵引、收卷,制成单层或多层结构的亚光聚酯薄膜;
(3)真空镀铝:将亚光聚酯薄膜在真空镀铝机上进行真空镀铝后形成亚光膜,真空镀铝流程为基材放卷→抽真空→加热蒸发舟→送铝丝→蒸镀→冷却→展平→收卷,真空度为5.0×10-2Pa,蒸发舟温度控制在1500~1600℃,铝丝纯度不低于99.99%,送丝速度为1.8~2m/min,镀铝层厚度为380~400埃,收卷速度为400~500m/min;
(4)分切:将亚光膜进行分切,分切速度为400m/min。
2.根据权利要求1所述的一种亚光镀铝聚酯薄膜的制备工艺,其特征在于,所述二元酸为PTA或QTA,所述二元醇为乙二醇,所述二元酸与乙二醇的摩尔量之比为1∶1.5~1∶2.0。
3.根据权利要求1所述的一种亚光镀铝聚酯薄膜的制备工艺,其特征在于,所述添加剂分散液中的添加剂由质量含量60~80%高岭土和40~20%硫酸钡组成,所述添加剂分散液的分散溶剂为二元醇。
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Cited By (8)
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CN106432893A (zh) * | 2016-10-14 | 2017-02-22 | 无锡三帝特种高分子材料有限公司 | 一种实用性强的镀铝膜 |
CN106478992A (zh) * | 2016-10-14 | 2017-03-08 | 无锡三帝特种高分子材料有限公司 | 一种化妆品包装用镀铝膜 |
CN106496897A (zh) * | 2016-10-14 | 2017-03-15 | 无锡三帝特种高分子材料有限公司 | 一种聚酯镀铝膜 |
CN106519633A (zh) * | 2016-10-14 | 2017-03-22 | 无锡三帝特种高分子材料有限公司 | 一种高防油镭射镀铝膜 |
CN107163510A (zh) * | 2017-07-14 | 2017-09-15 | 芜湖市三山区绿色食品产业协会 | 抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法 |
CN110884239A (zh) * | 2019-11-13 | 2020-03-17 | 嘉兴鹏翔包装材料有限公司 | 一种哑光标签用vmpet薄膜及其制备方法 |
CN110983256A (zh) * | 2019-12-16 | 2020-04-10 | 嘉兴鹏翔包装材料有限公司 | 一种保温用双面真空镀铝聚酯薄膜及其制备方法 |
CN113002027A (zh) * | 2021-03-15 | 2021-06-22 | 江苏宗亮新材料有限公司 | 一种亚光真空镀铝聚酯膜制作方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106432893A (zh) * | 2016-10-14 | 2017-02-22 | 无锡三帝特种高分子材料有限公司 | 一种实用性强的镀铝膜 |
CN106478992A (zh) * | 2016-10-14 | 2017-03-08 | 无锡三帝特种高分子材料有限公司 | 一种化妆品包装用镀铝膜 |
CN106496897A (zh) * | 2016-10-14 | 2017-03-15 | 无锡三帝特种高分子材料有限公司 | 一种聚酯镀铝膜 |
CN106519633A (zh) * | 2016-10-14 | 2017-03-22 | 无锡三帝特种高分子材料有限公司 | 一种高防油镭射镀铝膜 |
CN107163510A (zh) * | 2017-07-14 | 2017-09-15 | 芜湖市三山区绿色食品产业协会 | 抗老化聚酯/铝箔/聚酯复合食品包装膜及其制备方法 |
CN110884239A (zh) * | 2019-11-13 | 2020-03-17 | 嘉兴鹏翔包装材料有限公司 | 一种哑光标签用vmpet薄膜及其制备方法 |
CN110983256A (zh) * | 2019-12-16 | 2020-04-10 | 嘉兴鹏翔包装材料有限公司 | 一种保温用双面真空镀铝聚酯薄膜及其制备方法 |
CN113002027A (zh) * | 2021-03-15 | 2021-06-22 | 江苏宗亮新材料有限公司 | 一种亚光真空镀铝聚酯膜制作方法 |
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