How to prevent the window of a Membrane Keypad from being scratched?

How to prevent the window of a Membrane Keypad from being scratched?

First and foremost, there must be a strong sense of quality control at every stage of production. The window and buttons of the film switch are an integrated whole, with complex manufacturing processes and numerous steps for the buttons. Each production phase of the film switch needs to take into account protecting the window from scratches.

The control of original materials, the testing of transparency and scratch resistance levels for acquired original materials. When selecting materials for Membrane Keypads with display windows, it is essential to choose scratch-resistant materials, especially important for the front side's scratch resistance level. The original materials purchased must have protective films on both sides; this ensures that no damage occurs during material cutting. If the wrong material is chosen, controlling scratches on the window becomes challenging.

Printing environment, printing is usually carried out in a dust-free workshop, dust-free is only relative, semi-automatic silk screen printing machine printing, the window exposed storage time is relatively long, especially for color-rich film switches, we can consider printing water-based protective paint at the window position during the second printing process, so that subsequent printing processes can protect the window and prevent it from sticking to dust. After the final printing is completed, cover with a protective film. For automatic machine printing, each printing process needs to be covered with a protective film.

Also, make sure the rubber roller is free of dust particles to avoid scratching the window.

The standardization of homework, every step in the production process, must prohibit touching the window area, and at the same time, it is

forbidden to wipe the window. Even with finger cots, contact with the window area will leave marks, and even the slightest wiping may scratch the window.

The production of Membrane Keypads involves many molds, and the window area of the mold must be bright and flat. During production, repeatedly check whether there are any debris on the mold to avoid pressing damage on the window. Special attention should be paid to the window area of the silk screen plate, which should not have pinholes to prevent oil leakage in the window area.

After printing, the panels must be double-sided with protective film and then assembled and pasted. Typically, after the circuit assembly is completed, the final step is to paste the panel, remove the maintenance film on the back of the panel, and immediately cover it with protective film in the window area.