What are the processes for silicone rubber package hardware?

Silicone rubber products are not strange to us, we may not know much about the hardware packaging, today we will introduce the process of silicone rubber packaging products, which is the main silicone rubber and plastic packaging process, as well as silicone rubber and hardware packaging process.

Valve core assembly

The silicone rubber encapsulated products we are talking about are not the kind that prepare the parts and the molded silicone rubber products first, and then assemble them together, but first make the plastic or hardware parts, and then place them in the silicone rubber mold for positioning. Then inject the silicone rubber material for secondary molding. Compared with the general glue, or assembled together, it has the advantages of higher dimensional accuracy, firm bonding, and no falling off.

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There is also a liquid silicone rubber coating process, commonly known as LSR. Similar to plastic encapsulation, but this is only suitable for silicone encapsulation. The cost of this process is high, and the cost of the mold is also high. It is generally used for large-volume, high-precision silicone rubberized products.

Regardless of whether silicone or rubber is combined with hardware, such as stainless steel, aluminum alloy, etc., special attention must be paid to the surface treatment of the hardware, and degreasing treatment is required if necessary. This is related to the adhesion of silicone rubber to hardware, and the hot vulcanized glue used in different German silicone rubber materials is different.