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The main reasons are.
1, the problem of the material, rubber materials to mixing, storage, use of the process of moisture, moisture is not excluded, resulting in the generation of bubbles, or weather changes cause moisture. Most of the reasons may be a problem with the raw materials, change another batch of materials to try; formula to add exhaust agent or moisture absorber (calcium oxide).
1, the problem of the material, rubber materials to mixing, storage, use of the process of moisture, moisture is not excluded, resulting in the generation of bubbles, or weather changes cause moisture. Most of the reasons may be a problem with the raw materials, change another batch of materials to try; formula to add exhaust agent or moisture absorber (calcium oxide).
2, the mould exhaust hole is not properly set or blocked will also produce air bubbles, exhaust time is not good (improve the rubber exhaust slot, mould structure as simple as possible without leaving dead ends). Raw materials in the refining, air is wrapped up in the material inside, resulting in the processing process, the material and air into the mould together, if the mould is not added exhaust groove or processing is not set up in the exhaust process, the air is easy to be trapped inside the mould, so that the product produces air bubbles or air holes.
3, the production of rubber products, bubbles after vulcanisation, may be a problem in the rubber formula, the material with a reasonable, appropriate addition of materials to help exhaust (recycled rubber, rubber powder, exhaust agent, calcium oxide, etc.).
