Custom PU Coating silicone keypads

Silicone keypads are custom silicone products that we often come into contact with. In daily life, silicone buttons are used in handheld mobile devices, instruments, remote control panels, and car interiors. These customized silicone keypads are required to withstand tens to hundreds of thousands of presses in harsh environments and protect the characters on the surface of the silicone keypads. Although lower-cost screen printing technology can cover the surface of silicone keys with ink and print various legends, the screen-printed legends on the surface of silicone products will become blurred due to frequent pressing and friction over a long time. To prevent the legends from being worn, silicone product manufacturers usually spray a layer of wear-resistant PU ink on the surface of the silicone keys after the silk screen printing process is completed for protection. This special protective layer can effectively protect legends, thereby extending the service life of silicone products and saving the time and cost of replacing silicone parts.

Application of Custom PU Coating silicone keypads

The spray PU process is mainly used in custom silicone keypads (Car keypads, remote control keypads, bank POS machine keypads, instrument keypads, control panel keypads) and silicone products that require high legend wear resistance life.

Custom Silicone remote control silicone rubber keypads

Custom POS machine silicone keypad

Custom instruments and equipment keypads

Custom automotive silicone keypad

The benefits of custom PU coating silicone keypads

Spraying PU ink is crucial to customizing the appearance of silicone buttons. By spraying different inks, silicone keypads with different colors and finishes can be customized to enhance the visual appeal of the buttons.

Using polyurethane to treat silicone keypads can improve their surface wear resistance and service life. Uncoated silicone keypads are subject to frequent pressure from fingers, which may cause wear and tear on the key legends over time. The surface of the PU-treated silicone button forms a protective film, which enhances durability and is very suitable for use in electronic equipment and automotive control panels with more demanding wear resistance.

After the PU ink spraying process, the silicone keypads can achieve a smooth and uniform surface, enhancing their hand comfort and allowing users to feel a delicate touch when touching the buttons.

The PU coating has excellent chemical and corrosion resistance, making the silicone keypads resistant to corrosion and damage caused by chemical exposure. It also has good waterproof and dustproof properties, keeping the keys clean.

Glossy or matte ink can be sprayed on the surface of silicone products to meet the various appearance requirements of customized silicone keypads.

Compared with other surface coating methods, the spray PU process is simple to operate and a more cost-effective solution.

The steps of custom PU coating silicone buttons

Spraying PU ink refers to a common process that uses PU (polyurethane) to surface-coat customized silicone products that require a glossy or matte finish. The process includes preparation, surface treatment, drying, flame treatment, spraying, and curing. The silicone keypads using the spraying process are beautiful in appearance, durable, and meet the manufacturer's customized needs. The following are the steps for custom silicone buttons to spray PU ink:

The first step: Prepare the silicone keypads, PU ink, equipment, etc. that need to be processed.

Step 2: Before PU spraying paint, put the silicone keypads into the cleaning machine for cleaning, and then use a dryer to dry them to ensure that their surface is free of dust and other impurities. In addition, check the surface of the keys for defects or damage. If defective products are found, they are picked out and scrapped.

Step 3: Flame/discharge treatment.

Step 4: Use spray equipment to spray the evenly stirred PU ink on the surface of the keys.

Step 5: Place the sprayed silicone button into an infrared oven and bake it dry.

Custom PU Coating silicone keypads

The benefits of custom PU coating silicone keypads

The steps of custom PU coating silicone buttons

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