What to do if the liquid silicone mold does not demould
Aug 23,2023 Hanast
Sticking to the mold during the production of liquid molding silicon handicrafts can cause damage to the mold. liquid molding silicone rubber If you want to solve the problem of demolding sticking to the liquid mould making silicone rubber mold and cannot find the reason, the following is a summary of some common mold sticking problems.
1. There is no release agent during use. Due to structural reasons, some molds are difficult to demould. You can apply a layer of release agent before use to facilitate demolding.
2. If the inside of the mold is not cleaned thoroughly before use and there is still glue on the mold after use, it will stick to the remaining glue when injecting again. Before use, pay attention to cleaning and wait for drying or wiping before use.
3. The liquid silicone has not yet fully solidified, some parts have already solidified, and some parts have not fully solidified. When demolding, the dripping glue still has a certain viscosity and adheres to the silicone mold. Wait for 24 hours before demolding and removing the finished product.
Reasonable use of silicone molds also ensures that they will not cause mold sticking. Here is the solution
Surface treatment of silicone mold
1. The molding molds for silicone products should be cleaned before the hydraulic molding machine, especially for newly removed molds that must be sandblasted first.
2. Choose different anti mold cleaners.
3. The silicone mold after sandblasting must be heated to sufficient temperature before demolding, and the demolding agent must be sprayed before molding.
Adjustment of mold temperature
Silicone products like to stick to the lower half of the mold temperature. When the upper mold temperature is 175 ℃ and the lower mold temperature is 165 ℃, silicone products usually adhere to the lower mold when the mold is lifted again.