面膜是将彩色油墨丝印至透明高分子聚合物背面，一旦丝印完成并切割成形，此层就成为彩色面膜层。面膜层为薄膜开关的组成部分，它能清楚地显示开关的功能、显示颜色、面膜类型以及开关的操作位置，它还能起保护作用。

面膜材料

     依据工程师以往的经验和对使用细节的核查，他们将推荐几种面膜材料。大多数都采用聚脂材料，有3种主要材料可以选择，它们的相关特性如下：

什么是设计时最重要的考虑因素？

    每种单独的颜色（包括背景色）需要不同的丝网印刷操作。彩色油墨印刷在感光材料的下表面，每次操作均需要进行颜色分选、油墨调配、丝网准备，并对此单独进行准备和登记。因此，颜色对开关的价格也有一定的影响。 

    （1）原图和各种标志能由高清晰度的扫描仪进行扫描，高质量、高对比度的“原图”可以减少工时。

    （2）客户提供原图对我厂的设计师有帮助，我厂根据客户要求及色标号调制油墨颜色，以保证质量和效率。

    （3）面膜图纸中的线条要清晰、连贯，否则会给丝印带来很大的困难。 

Mask is the color printing ink to the back of the transparent polymer polymer, once the screen printing is complete and cutting process, this layer becomes a color film layer. The mask layer is a thin film switch component, which can clearly display the function of the switch, the display color, the mask type and the operating position of the switch, and it can also play a protective role.

Mask material

According to the previous experience of the engineer and the verification of the use of the details, they will recommend several mask materials. Most of the polyester material, there are mainly 3 kinds of materials can be selected, their correlation properties are as follows:

What is the most important consideration when designing?

Each individual color (including the background color) requires a different screen printing operation. Color ink printing on the lower surface of the photosensitive material, each operation is required for color sorting, ink deployment, screen preparation, and to prepare and register for this alone. Therefore, the color of the price of the switch also has a certain impact.

(1) original and marked by high resolution scanner to scan, high quality, high contrast degree of the "original" can be reduced working hours.

(2) provide artwork to my factory designers help, our factory according to customer requirements and color label modulation ink color, in order to ensure the quality and efficiency.

(3) the lines in the face mask should be clear and coherent, otherwise it will bring a lot of difficulties to screen printing.