I believe many silicone product manufacturers have encountered situations where silicone products have flow marks and burrs during production (see the figure below); The quality of silicone products is definitely not up to standard when such problems occur. What are the flow marks and burrs on the product?

How to solve the problems of flow marks and burrs in silicone products

So how can we solve the problems of flow marks and burrs? To solve a problem, one must first know the cause of its occurrence. Determine the reasons for flow marks and burrs in silicone products, and determine the silicone raw materials and related additives, such as: Is silicone ordinary silicone or platinum vulcanized silicone? Is the colorant used for the color masterbatch or is it a pre dispersed substance? Because flow marks are related to silicone mixing, reducing mold temperature and thorough mixing can reduce or eliminate flow marks.

For the causes of burrs: 1. Excessive material weight; 2. Excessive exhaust and high mold temperature. Solution: The mold joint line needs to be polished with an oilstone; Add frozen trimming, etc. Of course, there are various factors that can cause flow marks and burrs in silicone products, and Ruibo Rubber has also made explanations based on its own experience. If there are any shortcomings, please contact Ruibo for correction.