Low hardness silicone edge problem solution

In the production process of silicone products, when the lower hardness silicone product is formed, if the control is not good, the edge part may be broken, which is commonly called the explosion of the silicone product. Why do low-hardness silicone products exhibit such blasting?

The edge cracking phenomenon of silicone products is easy to occur in the hardness of 30 to 50 degrees, and the appearance of more than 50 degrees is not common. Understand the reasons for the bursting of low-hardness silicone products, then in the face of this situation in production, it is necessary to prevent and repair in time to ensure the high quality of silicone products, as follows:

1. When the low-hardness silica gel product is produced, the mold temperature of the molding is appropriately lowered. If bubbles and white spots appear, the method of prolonging the vulcanization time is adopted. The molding temperature must drop suddenly until the silicone product does not blast, and it cannot be solved by simply dropping the mold temperature by four or five degrees.

2, the procedures and the number of times the silicone products are exhausted in production must be controlled just right. Minimize the number of exhausts and minimize the exhaust process.

3. Properly reducing the amount of vulcanizing agent added is also a way to avoid blasting.

4, the mold blade is too sharp, you need to pull the exhaust slot, can not be trapped.

Low-hardness silicone products are difficult to grasp during production, so be sure to pay attention to each process and process to avoid mistakes leading to defective products.