The extrusion process of silicone extrusion strips:

For products such as building doors and windows, large mechanical seals, and electronic shock absorbers for door valves, the size and design shape of the products are often key issues affecting performance. During the extrusion process, the shape design of the product is crucial. For example, if the size is in the working shape or thin hook shape, the size of the extrusion process will cause relatively difficult deformation; Secondly, if the product is too large and the size is not fixed, even without fixed support points, deformation may occur.

Extrusion processing is a relatively stable production process. Seen from the current form, silica gel extrusion strip materials account for more than 70% of the production and processing. Many silica gel extrusion strip processing enterprises choose extrusion to give up the molding process, focusing on the quality control of products on foam, deformation, appearance quality and materials.

The molding process of silicone extrusion strips:
In addition to targeted processing methods for extrusion, forming hardening is considered one of the popular methods, but compared to silicon extrusion, the size issue is different. The difference between extrusion processing and molding production is that it can produce wireless extension length dimensions and cannot be used as dividing line shapes, while molding processing can produce square, circular, and heterogeneous sealing shapes.

Silicone extruded strips are products in the shape of steel strips, which can be made using various processing methods during the manufacturing process. Solid silicon and liquid silicon can be used together, and their performance is very good. They are mainly resistant to high and low temperatures and have good physiological inertia, and can be used normally under various environmental conditions. Long term use does not affect deformation and resilience, and has strong durability against external ozone, ultraviolet radiation, and aging. Green does not conflict with any substance.

The extrusion production process of silicone extrusion strips:

1. Softening agent: Mix rubber raw materials with double directors, platinum vulcanizing agent, or silicon masterbatch in the smelting machine to form a silicon protrusion material with uniform thickness.
2. Extrusion molding: Install a mold at the head of the silicon extrusion machine. Cut the refined rubber into equal sized shapes for easy supply from the inlet of the extruder. Then, the material is fed through a silicon extruder, and a soft silicone hose is extruded. The silicone hose is placed in an 8-meter-long drying furnace for high-temperature vulcanization. Please make semi-finished products by baking silicone hoses and then wrap them around.
3. High temperature vulcanization: put the wrapped silicon hose into the oven, generally 180 ° silicon, 200 ° gas-phase silicon hose, and conduct secondary vulcanization at high temperature for 2 hours to remove the smell of silicon hose and prevent spray and yellowing.
4. Subsequent processing: The rest is for subsequent processing, such as cutting or bonding according to the customer's required length, then packaging and shipping to the customer as needed.

Regarding silicone rubber, please refer to the details:
https://www.htvsilicone.com/product-high-tear-strength-precipitated-type-silicone-rubber-.html