Reasons and solutions for bubbles in the production of food-grade silicone hoses

Food grade silicone hose is a very special silicone hose. When using it, ensure that it is clean and hygienic, and pay attention to maintaining it to avoid leakage. When producing food-grade silicone hoses, we sometimes find that there are bubbles in the hose. So what is causing this? Let’s take a closer look.

When we find bubbles in the food-grade silicone tubings, we have to consider the issue of raw materials. It may be because the transparent white carbon black is impure or mixed with other white carbon black. In addition, there is another possibility that there is a problem with coking, The mixing of the rubber material is not uniform, the filling capacity is unreasonable, and uncontrolled debinding temperature and time. So how to solve this problem?

First of all, let’s solve the problem of raw materials. When producing food-grade silicone tubings, we should choose transparent white carbon black with a better purity, and then mix the transparent rubber after the kneader is cleaned. So how to solve the problem of coking? It is necessary to control the kneading temperature and the kneading time, extend the original kneading time by 5-10 minutes, and then discharge the glue for inspection.