1. Clean the mold with a detergent, then dry the mold or use a fan to dry it and apply a release agent.
2. The normal share of pad printing silicone and silicone oil is based on customer demand. If the customer needs a larger printed area, you need to use a soft plastic head to increase the silicone oil. In contrast, if the hardness of the rubber head is large, the silicone oil does not increase or decrease. The hardness of the rubber head is usually 15A ~ 25A °. If the silicone oil is too large and the rubber tip is too soft, the number of prints is limited. Even the highest quality silicone will be damaged by the silicone oil, resulting in no abrasion, solvent and aging.
3. The normal share of the introduction is as follows: 100 grams of silicone participate in 30 grams of silicone oil, the hardness of the rubber head is 15A °, custom printed alloy transfer cars and small pictures, and the touch area is relatively small. If the pressure contact surface is large or you need to use a soft rubber head, the ratio of silicone to silicone oil can be 100: 30, 100: 50, but it should be noted that the greater the increase in silicone oil, the greater the number of times the rubber head will be displaced , Abrasion resistance and solvent resistance will be reduced and reduced, and the number of printed products will be reduced accordingly, resulting in increased costs and raw materials.
The increase of the curing agent and the chemical reaction conditions of the silica gel are as follows: 100 g of silica gel and 50 g of silicone oil are mixed and then mixed. After the silicone oil and the silicone oil are uniformly mixed, the total weight of the silicone oil and the silicone oil is 2% to 3%. Take the curing agent and mix for 2-3 minutes to twitch. The twitch time usually does not exceed 10 minutes. If the twitch time is too long, the colloid will solidify quickly, which will affect the quality of the glue.