1. check the quality of the coated material
Coated materials can be metal, plastic, glass, ceramic, nylon and other materials. Because the silicone is a thermoplastic material, the mold temperature of the silicone mold is usually about 170 to 200 degrees, so the material of the coating must be resistant to a certain high temperature. The surface of the coated material must be clean, no stains, defects, otherwise it will affect the quality of the final product.
2. brush the primer
In order to enhance the bonding tightness of liquid silicone and other parts, it is necessary to apply a layer of base coating on the surface of the coated part. Different coated parts need to use different primer, HONGXIANGDA has accumulated rich experience in this area. The base coat must be brushed on the coated part, and the base coat cannot be brushed on the non-coated part. Otherwise, it will cause the edge of the product to be difficult to clean up later.
3. baking coated material
After brushing the primer, the material needs to be baked in a professional oven, so that the primer and the coating material can fully react chemically.
4. injection molding
Injection molding is carried out in the mould by means of the encapsulation flow. Liquid silicone injection molding equipment is liquid silicone injection machine, each injection machine must be equipped with accurate metering of the feed machine. HONGXIANGDA currently has liquid silicone injection machines and supporting feeding machines.
5. Clean the edge burrs
The semi-product after composite injection molding has more or less rough edges, so it is necessary to manually clean the edge burrs. The number of raw edges has a great relationship with the precision of the mold. HONGXIANGDA has been committed to the production of silicone products without burrs, so we have built a mold processing center, committed to the manufacture and processing of high-precision liquid silicone molds without burrs.
6. Inspection and shipment
After cleaning the top of the product need to pass QC inspection before delivery to the customer, the test items include product appearance test, wear resistance test, air tightness test, etc., can not be the product, the test items are different, we will negotiate according to the customer's requirements for the product to determine what test items.
The production process of liquid silicone rubber products is roughly the above 6 parts, this is a simple introduction, liquid silicone rubber injection molding process is still more responsible, the equipment, personnel, technology, mold requirements are relatively high, can produce liquid silicone rubber products manufacturers are not many.
If you have similar products need to be customized production, you can contact us to consult.
