Solution to Bubble Formation during Mold Silicone Molding

When using liquid silicone molds to make molds, it is easy to produce bubbles due to some details not being grasped properly during the operation process. What type of liquid silicone is used to prevent bubbles from forming? There are two ways to make molds: pouring and brushing. When pouring, bubbles are not suitable to be discharged, which can easily generate bubbles. Therefore, when making molds, it is important to grasp a few key points to prevent bubbles from forming.

1. Try to use the brush mold method for operation. Brushing the mold is done by brushing the silicone layer by layer onto the mold, which is not easy to produce bubbles.
2. If the mold is made using a universal overfilling method, when purchasing liquid silicone rubber, it is advisable to choose silicone rubber with low liquid viscosity as much as possible, which has better flowability and makes it easier to discharge bubbles during the molding process.
3. When using liquid silicone rubber, it is necessary to reduce the amount of curing agent added, so that the curing time will be longer, and the liquid silicone will have more time to flow, allowing bubbles to be expelled.
4. Liquid silicone rubber is a dual component of AB, which needs to be thoroughly mixed before use, and then stirred evenly
5. Put the evenly stirred liquid silicone rubber into the vacuum pump for vacuum treatment
6. After vacuuming, do not use it immediately, as the bubbles in the liquid silicone rubber will escape from the liquid before use, so as not to generate bubbles.
When using liquid silicone rubber, paying attention to the above points can basically avoid the generation of bubbles during the operation process.
I hope the above mold silicone bubble solutions are helpful to you. For more information on related issues, please follow us at HANAST silicone!