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What are the causes of the surface of silicone rubber tube products?
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Silicone rubber tube is mainly divided into silicone rubber tube and latex tube, the production is mainly used to squeeze out the extrusion equipment. But extrusion product sometimes appear wrinkled, thin size is relatively large the surface problem in normal, other products, mouth adjustment in several times, vulcanization curve, Mooney viscosity is in accordance with the require of extruding, is what causes such problems?
1 it is possible that silicone tube and latex tube products are too thin or product side by side.
2 may be plastic material back to the smelting is not in place of the heat. The feeling is low Mooney material, high temperature extrusion. Thinner products and the surface area of the product of large size of the material to be squeezed out of the force to do a very uniform, because it is affected by many factors, especially the mold.
3 has no effect on the adhesive rate, some of the low will be better? Try to increase the outlet temperature, reducing cold end temperature. Product is too thin, it is best not to consider extrusion, as extrusion qualified rate is very low, calendering is a good choice. Extrusion process related, adjusting the extrusion machine temperature and screw speed, slightly lower point will improve, rubber mixer mixing evenly, Mooney viscosity high point on the appearance and stability of size improved.
Qiyu silicone rubber for your mouth analysis: the quantity of cement is not consistent, a wrinkle place glue volume fast. The main place is Zou glue too fast cause! It can be in the flow channel, increase the resistance to reduce the amount of plastic, which is more common in the case of extrusion!
This paper is from Shenzhen,, id=449?
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