In Che plastic products processing process, a process with the most troubling is the down side, especially with mould pressing craft products, edge can let a person down to mad. So what are the causes of rough edges?
1. The curing temperature is too high or the curing time is too long
Silicone products in the molding process, once the temperature is too high or the vulcanization time is too long, it will cause the product to become numb or brittle after forming, whether it is numb or brittle, it will have a great impact on the disassembly.
2. Vulcanization temperature is too low, vulcanization time is too short silicone products are not fully vulcanized when the elasticity is very strong, so it is not easy to separate the raw edge from the product when removing the edge, so it is generally necessary to use scissors to trim the edge.
3. The mold self-disassembly design is unreasonable, the processing quality is not up to standard or the mold wear time is too long. In the design of the mold, the mold design is unreasonable, and the self-disassembly of the manufacturing mold is not sharp, resulting in difficult to remove the edge after the product is formed. In addition, too many times of mold wear or sandblasting of silicone products will also affect its self-disassembly performance.
4. The molding thickness is too large
In the molding process, as long as the size meets the requirements, try to do, scale, material accurate,
5. Silicone raw material problem
The rubber chain has problems, the quality of the rubber material is poor, there is insufficient tearing strength, poor toughness, easy to break after forming.
