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Why do silicone rubber products appear dark marks?

2022-09-16
Latest company news about Why do silicone rubber products appear dark marks?

In the manufacturing steps of silica gel products, sometimes the manufactured goods will occur viscera tone is never that and water ripple effect, this effect is collectively known as "dark mark", which is a bad phenomenon.

Why do silicone rubber products appear dark marks?

1. The temperature resistance of color paste is very little, resulting in water ripple effect on the surface of silicone rubber products. Textile forming cause of the dark mark rubber, its are tonal are replaced by two more than color paste distribution and thus, if a few kinds of color paste and heat-resistant effectiveness lies far away, will cause to the forming of low temperature and some color paste didn't fade, thus some little color paste due to thermal efficiency and fade, the goods after forming the surface water ripple effect.

2, forming concentration less than color paste temperature area fade, resulting in silicone rubber commodity surface tone is not the same.

3, the discharge method is not appropriate and the different types of rubber mixed together to form the surface color of silicone rubber products is not the same.