Silica gel molding process is divided into two categories: solid silica gel molding process and liquid silica gel molding process according to different silica gels. The difference in silicone molding process can be divided into four categories. Solid silicone molding process, extruded silicone molding process, liquid silicone injection (injection) process, other special silicone molding methods, etc.

1. Solid silicone molding process:

Solid silicone products are usually made by adding (double two five or double two four) silicone vulcanizing agent into the high temperature mold, and then applying pressure through the flat vulcanizing machine, high temperature sulfur into a solid, molded silicone hardness Usually (Shore hardness) 30-70A. In the production of compounded rubber in the silicone plant, the raw rubber is first added to the double-roll rubber compounder or the closed kneader and gradually added with white carbon black, silicone oil and other additives to be repeatedly refined. According to different fillers and additives, the performance of silica gel also varies.

2. Silicone extrusion molding process:

Extruded silicone products are usually formed by extruding the silicone through an extrusion machine. It is a continuous molding process that can be suitable for the production and processing of liquid silicone rubber catalyzed by solid silicon dioxide or platinum sulfide. It is a process in which silicone rubber is continuously made into various shapes of semi-finished products under the interaction of the silicone extruder barrel and the rotating screw. It can be used to process silicone tubes, silicone wire and cable insulation sleeves and other silicone products.

3. Liquid silicone molding process:

Liquid silicone is abbreviated as LSR in English. It is a kind of product that can be favored by consumers and manufacturers. It has good elasticity, waterproof and moisture resistance, and is resistant to corrosion by many chemical substances such as acid and alkali. Liquid silicone products are integrally molded by silicone injection, injection and injection; LSR is divided into A glue and B glue, and the ratio is controlled to 1: 1 by a quantitative device, and then fully mixed through a static mixer and injected into the injection material After the tube, injection molding is performed.

4. Other silicone molding process:

Other (special silicone molding process) special silicone products are based on the chemical properties of silica gel or the addition of some auxiliary materials. Special silicone products can also have high temperature resistance (up to 330 degrees), food grade (fully in line with US FDA, LFGB standards) , Medical grade, flame retardant grade, by adding auxiliary materials can also have, luminous, negative ions, discoloration, and other characteristics. This kind of product bonding needs silicone glue with special requirements to meet.