What are the reasons for the problem of air bubbles in the production of silicone tube? - 25+ Years Srtub Food Medical Grade Silicone Tube Manufacturer

The production of silicone tube on the raw materials and production technology has certain requirements, may be due to a small error will lead to silicone tube bubbles and other problems. So what are the reasons for the bubbles?

Let’s take a look below, mainly by the following reasons.

First, too many raw material impurities, mixing process is not uniform, etc., vulcanization may produce this phenomenon. In the mixing process mixed with something else, such as packaging rubber PE bags. The product structure is complicated or the mold structure is unreasonable, making it difficult to discharge the beg. It is suggested that some processing flow exhaust additives can be added. Mixing time is not enough vulcanization pressure is not enough, the mold or the rubber material in the impurity or oil, moisture, improper loading method, involved in the air, vulcanization mold temperature is too high.

Second, if the silicone tube operating oil contains too much water, in the silicone tube production process, it is also easy to cause the emergence of bubbles. Bubbles are very common a, the best solution is to compare the test, such as your formula to the outside refining a little, vulcanization to see, you can rule out raw materials. If in the case of determining the rubber material is not damp, and zinc oxide damp either rotten eyes or white spots, generally does not appear bubbles, change the stearic acid just because the stearic acid problem, the workshop appeared a large area of bubbles. Vapor bubbles are not only one kind, there are small bubbles, there are fried small bubbles, said as if it is a small bubble, most of the vulcanization system and process did not match well, there may be too high a temperature, you just need to lower the temperature a little bit, extend the time a little bit, look at the results will know.