The detection content of the sealing ring can be detected from the appearance, air tightness, hardness, tearing, high temperature and other aspects of the sealing ring burr is also called trimming, trimming is a common process in the production process of rubber products. Trimming methods are: manual trimming method, grinding method, cutting method, freezing trimming method, no flash mold forming method. Each manufacturer can choose the appropriate trimming method according to the quality requirements of the product and its own production conditions.
First, manual trimming: manual trimming is an ancient method of trimming.
Second, mechanical punching and trimming edge with pressure machinery and punching die, punching knife, remove the rubber edge of silicone products.
Third, frozen trimming machine equipment, the principle is to use liquid nitrogen (LN2) to make the raw edge of the finished product brittle at low temperature, and use specific frozen particles (pellets) to hit the raw edge to quickly remove the raw edge.
Fourth, the use of non-flash mold production, trimming work becomes simple and easy (flash a tear off, so this mold is also called tear die)