The advantages and disadvantages of silica gel extruded products and molded products

Some customers are not very familiar with silica gel extrusion products and molded products, and do not know which is the most appropriate. Let's compare the advantages and disadvantages of each concept:
First of all, molding is the silicone rubber material in the closed mold cavity by heating, pressure and molding the finished silicone rubber processing method.
Usually, the powder flake glue block is first made into a blank with a similar shape to the finished product, and then placed in the cavity of the heated mold. Then the mold is closed and pressurized, so that it is formed and cured or vulcanized, and then the finished product is demolded. This method is especially suitable for the molding process of thermosetting commodities.
Advantages of silica gel molded products:
1. Can be made into any shape
2. High precision, regular and beautiful shape of goods
Disadvantages of silicone molded products:
1. Usually, the length can only be less than 600 mm
2. Long production cycle, low power
3. There are many rough edges and waste products in the production process
4. The mold cost is expensive and the development cycle is long.
Secondly, extrusion is usually based on the type of processed polymer and the shape of finished products or semi-finished products, selected extruder, head and mouth die, as well as shaping and traction corresponding auxiliary equipment, and then concluded extrusion process conditions such as screw speed, head pressure, material temperature, and shaping temperature, traction speed. In the extrusion process, the material is usually through the plastic, but the shaping method is different. Extrusion of semi-finished silicone rubber, it needs further vulcanization.
Advantages of silica gel extruded products:
1. It can go on forever
2. Short production cycle and high production capacity
3. Very little waste occurs
4. The mold is cheap, convenient and fast to develop.
Disadvantages of silica gel extruded products:
1. Make strips only
2. The precision is poor, and some shapes are difficult to produce