Why some rubber products have bubbles ? Factory Suppliers Manufacturers Quotes

Why some rubber products have bubbles ?

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1. The main problem is the raw material. During refining,air is wrapped in the material , then in the process of processing, material and air enter into the mold together. If the mold without vents or no vent process in processing, air is easily trapped in the mold, so that produce bubbles or pores.

2. During rubber mixing, increase the number of mill run to avoid residual air.

3. Advising change the Vulcanization molding machine to vacuum molding machine, to avoid the air into the injection molding. During processing,if the speed of injection materials is too fast, will form turbulence and result in bubbles.

 


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