Analyze the causes of disqualification of food-grade silicone rubber products

There are many reasons for the unqualified silicone rubber products in the production process, especially the hygiene of food-grade silicone rubber, which is mainly reflected in the production of silicone rubber kitchenware. Next, we will analyze the causes of disqualification of food-grade silicone products.

Some silicone rubber products factories pay little attention to the raw materials used for kitchenware. They use silicone rubber raw materials with low quality grade for the production of food tools without testing the raw materials, or use unqualified color glue and additives for coloring in the production process, resulting in unqualified product hygiene. It is mainly shown in the following aspects:

1： The production process is not standardized. Due to the particularity of the safety requirements for silicone rubber tableware, food silicone rubber products have very strict requirements for the production process. After the product is formed, it needs enough time to remove volatile substances. In order to pursue efficiency, some factories have not reached enough processing time for their products. The enterprises are not satisfied with the product use conditions.

2： The secondary vulcanization of silicone rubber products is also called post-vulcanization. Effect of secondary vulcanization: When silicone rubber is vulcanized with peroxide, the decomposition of peroxide will lead to polymer reaction, and low molecular compounds (such as benzene and benzoic acid) will be generated. The presence of these compounds in the rubber will affect the mechanical properties of the rubber.

3： From the perspective of appearance, some silicone products will break when pulled by hand and have no elasticity. If the mixed rubber is vulcanized and molded at a certain temperature, the product can be obtained, such as the silicone rubber spatula, silicone rubber spoon, silicone rubber steamer, etc. we usually see. As for whether it is toxic or not, as long as the silicone rubber manufacturer can provide food certification, it is generally non-toxic.

Therefore, in general, the disqualification of food-grade silicone rubber products is not only affected by the production process and process, but also by the selection of food-grade silicone rubber raw materials. Selecting high-quality food-grade silicone rubber raw materials can reduce many problems.