Why does the surface of food grade mold silicone rubber stick or not solidify

According to the feedback of many customers who use food grade silicone rubber as molds, they have encountered many problems when using food grade silicone rubber as molds. The most common one is that the surface of the mold is sticky or the surface is not cured. After their attempts in all aspects and consulting with silicone rubber industry suppliers, especially after replacing aiyota's silicone rubber, this problem has been solved.

The main reasons for non curing or sticky surface of food grade silicone rubber are as follows:

1. The curing temperature of food silicone rubber is too low.

2. The AB component of food silicone rubber was not mixed in strict accordance with the specified proportion

3. The mixing process is not uniform

4. The mixing container is not clean or the mixing tool is not clean. The surface of the original mold seed is not treated (especially if the original mold seed contains heavy metal elements or nitrogen, sulfur, phosphorus, tin, arsenic, mercury, lead, etc.)

It is simple to solve these problems: it can increase the curing temperature of food grade silicone rubber. In addition, increasing the curing temperature has the advantage of shortening the curing time. In the mixing process, the mixing proportion provided by the manufacturer shall be strictly followed. For example, the common mixing proportion of aiyota food grade silicone rubber is 1:1 and 10:1100:1. When mixing food grade silicone rubber AB components, be sure to use clean containers and mixing tools.

If conditions permit, it is best to spray a layer or even multiple layers of release agent on the surface of the mold seed. The release agent can effectively block the contact between silicone rubber and some chemicals in the mold seed that cause the non curing of silicone rubber and silicone rubber.

If you encounter these problems in the process of using silicone rubber, you can contact us and try to use the silicone rubber produced by aiyota. Adhering to the values of precision production, fine service, sincere cooperation and precision use, we will provide you with the best quality silicone rubber products!