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Causes and solutions of spots on rubber release agent
Rubber release agent is an interface coating used on the surface of two objects that are easy to adhere to each other. It can make the surface of the object easy to separate, smooth and clean. However, in the production process, in case of improper operation, it is very easy to have marks in the molding of products. Next, the following small series will give you an analysis of the causes and solutions of this situation?
1, caused by evaporation: evaporation, solid precipitation can not form a uniform film, to adjust the dispersant and solvent.
2, spray flow caused by: adjust the amount of spray release agent.
3, uneven spray caused: improve coating.
4, caused by fat flow: easy to appear at the turning point, mold design to overcome.
5, wipe caused by: select the mold release agent hardness and solvent system.
6. Product shrinkage: shrinkage stress exceeds anti-tension, concentric spots, mainly choose material shrinkage rate, injection pressure and other adjustments.
7, caused by bubbles: there are many small bubble pits on the surface of the product, raw material problems or defoaming performance of the release agent, there are gaps between it and the mold to roll into the air or the mold surface is rough, etc., to improve the hardness of the release agent.
The above is the reason and solution that Xiaobian shares with you that cause spots on the surface of rubber release agent. Rubber release agent is used in various molding operations such as glass fiber reinforced plastics, metal die casting, polyurethane foams and elastomers, injection thermoplastics, vacuum foam sheets and extruded profiles, and has a wide range of applications.
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