There are many reasons why the surface of silicone products is not smooth enough, it may be caused by improper maintenance, or it may be a raw material problem. In addition to raw material problems, in the silicone products manufacturers cause the surface of the product is not smooth enough for the following reasons.

1. 1, the development of the mold, the mold fit inside the mold is not smooth enough resulting in products with bump phenomenon.
   2, the control and use of vulcanizing agent when mixing silicone raw materials is not reasonable, the vulcanizing agent added less silicone products are not thoroughly vulcanized, resulting in the surface of the product sticky.
   3, vulcanizing agent and silica gel in the mixing is not uniform, the mold presents a side vulcanization side did not vulcanize, resulting in the product molding vulcanization due to different soft and hard deformation.
   4, the production time table mold cleaning is not clean, the mold is not smooth enough inside the mold, the mold contains the remaining residual material, resulting in the product heavy material bump phenomenon, resulting in the product surface is not smooth.