In the production of silica gel products, low hardness silica gel products in molding control is not good there will be a broken edge position, this is commonly known as silica gel products burst, why low hardness silica gel products will burst edge? How to solve the problem of burst edge?

A low hardness (about 30 degrees) in the rubber molding is easy to appear wind (bubbles) and other bad, if it is the color of the silicone body or translucent color is also easy to see many small white spots in the silicone products,

Solution: the method of improving the mold temperature, the mold temperature will be properly improved.

Two. When the mold temperature is increased, the wind (bubble) and white spots are solved, but the edge of the silica gel products began to break, that is to say, the explosion. In this way, a dead cycle is formed. When the mold temperature is increased, the edge will burst. When the mold temperature is reduced, there will be wind (bubbles) and white spots.

Solutions:

1. Reduce the mold temperature of the molding, if there is wind (bubble) and white spots on the extension of curing time. Molding temperature must drop sharply, until the silicone products do not burst the edge, do not think that a four or five degrees of mold temperature can be solved.

2 exhaust stroke and times must be well controlled, exhaust times as little as possible, if you can exhaust stroke is also as short as possible.

3. The amount of vulcanizing agent can be reduced appropriately.

Three. The knife edge of the molding mold of silica gel products is too sharp or burr.

Conclusion:

Silica gel products explosion is easy to appear in the hardness of about 30 degrees, generally more than 50 degrees is very rare, such as silica gel keys, so we understand the explosion of low hardness silica gel products, in the face of this situation to prevent and repair, so as to ensure the orderly development of silica gel products factory.