Production process of silica gel products
Silicone products: The products are made of silica gel, including silicone mobile phone case, silicone kitchen utensils, silicone adult products, tablet sets of various silicone sleeves, etc. Underneath, how to make silicone products is explained. What are the processes:
There are two kinds of molding production processes for silica gel products: one is solid-state hot-press vulcanization molding, and the other is liquid injection molding. Here we will focus on the first one: the production process of silica gel solid-state hot-press vulcanization molding!
1. Rubber: The raw materials of silica gel returned by the factory are all in blocks, usually milky white. The raw materials at this time cannot be directly subjected to hot press forming, and it is necessary to add a vulcanizing agent (ripening agent). If the product has special requirements such as: color, luminous, fluorescent, fluorescent powder, conductive, etc., you need to add the corresponding color masterbatch, luminous powder, phosphor, fluorescent powder, conductive particles and so on. Put the raw materials together with the vulcanizing agent and other additives as needed, and mix them through the rubber mixer. The general rubber mixing time is about 30 minutes (depending on the weight of the rubber raw materials and the gap between the rolls)
2, cutting materials: the silicone material is cut into the size of the silica gel, length * width * thickness will be placed on the wake-up rack for a period of time, the general raw material is generally allowed to stand for about 8 hours ( The front and back of the raw materials are protected by PE film to ensure the cleanliness of the raw materials).
3. Hot press forming: After the time of waking up, the cut rubber is placed in the mold of the hot press vulcanizer to heat, vent, hold and form.
4, overhaul: product repair after the finished product, whether there is dirt, whether there is missing side, lack of material, product is not cooked, product rupture and other adverse conditions, the defective products are selected for placement (defective products can only be treated as waste , can not be used for secondary use) to send qualified products to the next process.
5, demolition: clean the edges of qualified products
6. Post-treatment: If the product needs post-processing, such as: surface injection, printing, engraving, etc., the product will be processed accordingly.
7. Overhaul: Carry out the last inspection of the product and select the defective products in the back-end process.
8, packaging: the good products according to customer requirements for packaging, shipping! OVER!
The above is the entire production process of silicone products!