CN112537102A - 一种高耐候金属覆膜板及其制造方法 - Google Patents

一种高耐候金属覆膜板及其制造方法 Download PDF

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CN112537102A
CN112537102A CN202011332785.4A CN202011332785A CN112537102A CN 112537102 A CN112537102 A CN 112537102A CN 202011332785 A CN202011332785 A CN 202011332785A CN 112537102 A CN112537102 A CN 112537102A
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黄海峰
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Huang Zhilan Shanghai New Material Technology Co ltd
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Abstract

本发明涉及一种高耐候金属覆膜板及其制造方法，为复合层结构，自上向下依次包括高耐候隔热复合膜、第一胶粘层、金属板基层、第二胶粘层和防护膜层；其中所述高耐候隔热复合膜为复合层结构，自上向下依次包括透明隔热层、装饰层和封装层；所述装饰层采用透明表面膜印刷形成，且透明表面膜的印刷面朝向封装层一侧设置；所述透明隔热层、装饰层和封装层采用热压覆合方式形成为一体；本发明一种高耐候金属覆膜板及其制造方法，降低制造过程的污染，提高产品化学和物理性能，提高产品表面膜层的附着力，不易脱层。

Description

一种高耐候金属覆膜板及其制造方法
技术领域
本发明涉及金属覆膜板领域，具体涉及一种应用于户外建材用墙板、屋顶、操作平台、防盗门及太阳能组件的高耐候金属覆膜板及其制造方法。
背景技术
金属覆膜板是在金属基材上覆上一层膜或喷涂物，从而提高其实用的耐久性或者美观度；类似于市售的彩涂板，通过涂装的方式在钢板表面形成涂装层，从而提高其美观度，但其不耐酸、不耐盐、容易褪色、易发生脱层，且在涂装过程环境污染严重。
发明内容
本发明的目的是：提供一种高耐候金属覆膜板及其制造方法，降低制造过程的污染，提高产品化学和物理性能，提高产品表面膜层的附着力，不易脱层。
为了实现上述目的，本发明提供如下的技术方案：
一种高耐候金属覆膜板，为复合层结构，自上向下依次包括高耐候隔热复合膜、第一胶粘层、金属板基层、第二胶粘层和防护膜层；其中所述高耐候隔热复合膜为复合层结构，自上向下依次包括透明隔热层、装饰层和封装层。
进一步的，所述装饰层采用透明表面膜印刷形成，且透明表面膜的印刷面朝向封装层一侧设置；所述透明隔热层、装饰层和封装层采用热压覆合方式形成为一体。
进一步的，所述透明隔热层采用透明隔热ASA膜和透明隔热PVDF膜中的任意一种；所述封装层采用PVC封装膜和ASA封装膜中的任意一种。
进一步的，所述的第一胶粘层和第二胶粘层均采用聚氨酯胶黏剂、丙烯酸酯胶黏剂和环氧树脂胶黏剂中的任意一种。
进一步的，所述防护膜层采用PVC防护膜、PET防护膜、PVDF防护膜和ASA防护膜中的任意一种。
一种高耐候金属覆膜板的制作方法，包括以下步骤，
步骤一：制造高耐候隔热复合膜，根据使用需求选取相对应的透明隔热层和封装层，在透明表面膜上印刷图案形成装饰层，将透明隔热层、装饰层和封装层按照自上向下堆叠且装饰层的印刷面朝向封装层的方式，进入覆膜机内热压覆合形成高耐候隔热复合膜；
步骤二：将金属板基层卷进开卷机内展平，进清洗段，清洗去油污，进干燥预热烘道，预热烘干，接着进入涂胶房，上下两面进行涂胶，形成第一胶粘层和第二胶粘层；接着进入加热烘道，进行加热；
步骤三：加热后，进入覆膜段，将高耐候隔热复合膜压覆在第一胶粘层上面，将防护膜层压覆在第二胶粘层下面；
步骤四：进入冷却段，冷却，最后，裁切收卷形成成品。
在步骤二中，所述干燥预热烘道的内部温度为60-80℃；所述加热烘道的出板温度控制在180℃-185℃。
本发明的有益效果为：
1、本发明一种高耐候金属覆膜板及其制造方法，无需采用涂装生产，降低制造过程的污染；
2、本发明一种高耐候金属覆膜板及其制造方法，防护膜层和高耐候隔热复合膜可根据需求选取相对应的材料进行覆膜，提高产品相对应的物理和化学性能；
3、本发明一种高耐候金属覆膜板及其制造方法，装饰层压合在透明隔热层内部，不易褪色，提高使用寿命；
4、本发明一种高耐候金属覆膜板及其制造方法，整体产品采用高温固化压覆成型，提高产品的附着力，不易脱层。
附图说明
图1为本发明一种高耐候金属覆膜板的截面结构视图；
图2为本发明所述的高耐候隔热复合膜的截面结构视图；
图中：1、高耐候隔热复合膜；11、透明隔热层；12、装饰层；13、封装层；2、第一胶粘层；3、金属板基层；4、第二胶粘层；5、防护膜层；
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明作进一步的详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
本发明一种高耐候金属覆膜板中的高耐候隔热复合膜1、第一胶粘层2、金属板基层3、第二胶粘层4和防护膜层5可任意压制成型，可以大大拓展市场的应用范围，外墙挂板、屋顶瓦片等，不仅限于用于彩涂板。
本实施列参考图1至图2，其中以透明隔热层11采用透明隔热ASA膜、封装层13采用PVC封装膜、第一胶粘层2和第二胶粘层4采用聚氨酯胶黏剂、金属板基层3采用镀锌板、防护膜层5采用PET防护膜为例，进行制作高耐候金属覆膜板。
步骤一：制作高耐候隔热复合膜1：按要求选择0.1mm厚度透明隔热ASA膜，在透明表面膜上印刷图案形成的装饰层12，封装层13选用0.07mm厚PVC封装膜，将以上透明隔热层11、装饰层12和封装层13按照自上向下堆叠且装饰层12的印刷面朝向封装层13的方式，进入覆膜机覆膜机内部辊温升到135℃，辊压5kg，线速度18m/min，热压覆合，裁边，形成高耐候隔热复合膜1进覆膜机。
步骤二：将镀锌板卷进开卷机内展平，进清洗段，清洗去油污，进干燥预热烘道，烘道温度设置60℃，预热烘干，接着进入涂胶房，上下两面进行涂胶(涂胶规格：上胶胶辊为150目，胶黏剂以聚氨酯为例，固含量为25％，用醋酸乙酯稀释，粘度控制在18-20秒25℃，3#查恩杯，涂胶量为65-70克湿/平米)，形成第一胶粘层2和第二胶粘层4；接着进入加热烘道，烘道出口板温控制在180℃-185℃，进行加热；
步骤三：加热后，进入覆膜段辊压8kg，将高耐候隔热复合膜1压覆在第一胶粘层2上面，将防护膜层5即0.05mmPET防护膜压覆在第二胶粘层4下面；
步骤四：进入冷却段，冷却，最后，裁切收卷形成成品。
实验测试：本方法生产的高耐候金属覆膜板，相比于彩涂板，表面膜层结构强度更高，具有高耐候、重防腐、耐盐雾、耐酸碱和保温性能，表面覆膜层的附着力更高，不容易脱层，更耐用。
在本发明中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
上述实施例用于对本发明作进一步的说明，但并不将本发明局限于这些具体实施方式。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应理解为在本发明的保护范围之内。

Claims (7)

1.一种高耐候金属覆膜板，其特征在于：为复合层结构，自上向下依次包括高耐候隔热复合膜(1)、第一胶粘层(2)、金属板基层(3)、第二胶粘层(4)和防护膜层(5)；其中所述高耐候隔热复合膜(1)为复合层结构，自上向下依次包括透明隔热层(11)、装饰层(12)和封装层(13)。
2.根据权利要求1所述的一种高耐候金属覆膜板，其特征在于：所述装饰层(12)采用透明表面膜印刷形成，且透明表面膜的印刷面朝向封装层(13)一侧设置；所述透明隔热层(11)、装饰层(12)和封装层(13)采用热压覆合方式形成为一体。
3.根据权利要求2所述的一种高耐候金属覆膜板，其特征在于：所述透明隔热层(11)采用透明隔热ASA膜和透明隔热PVDF膜中的任意一种；所述封装层(13)采用PVC封装膜和ASA封装膜中的任意一种。
4.根据权利要求2所述的一种高耐候金属覆膜板，其特征在于：所述的第一胶粘层(2)和第二胶粘层(4)均采用聚氨酯胶黏剂、丙烯酸酯胶黏剂和环氧树脂胶黏剂中的任意一种。
5.根据权利要求3所述的一种高耐候金属覆膜板，其特征在于：所述防护膜层(5)采用PVC防护膜、PET防护膜、PVDF防护膜和ASA防护膜中的任意一种。
6.一种高耐候金属覆膜板的制作方法，其特征在于：包括以下步骤，
步骤一：制造高耐候隔热复合膜(1)，根据使用需求选取相对应的透明隔热层(11)和封装层(13)，在透明表面膜上印刷图案形成装饰层(12)，将透明隔热层(11)、装饰层(12)和封装层(13)按照自上向下堆叠且装饰层(12)的印刷面朝向封装层(13)的方式，进入覆膜机内热压覆合形成高耐候隔热复合膜(1)；
步骤二：将金属板基层(3)卷进开卷机内展平，进清洗段，清洗去油污，进干燥预热烘道，预热烘干，接着进入涂胶房，上下两面进行涂胶，形成第一胶粘层(2)和第二胶粘层(4)；接着进入加热烘道，进行加热；
步骤三：加热后，进入覆膜段，将高耐候隔热复合膜(1)压覆在第一胶粘层(2)上面，将防护膜层(5)压覆在第二胶粘层(4)下面；
步骤四：进入冷却段，冷却，最后，裁切收卷形成成品。
7.根据权利要求6所述的一种高耐候金属覆膜板的制作方法，其特征在于：在步骤二中，所述干燥预热烘道的内部温度为60-80℃；所述加热烘道的出板温度控制在180℃-185℃。
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