PE profile boards are widely used in daily life and industrial fields, and their surface quality is crucial. Here are some common influencing factors and solutions:
Influencing factors:
1. Raw material quality: impurities and low molecular weight substances in raw materials will affect the surface quality.
Solution: Select PE raw materials with high purity and stable quality.
2. Processing temperature: too high temperature may lead to material degradation and discoloration, and too low temperature will cause poor plasticization.
Solution: Precisely control the temperature of each processing section to find the appropriate range.
3 extrusion or injection pressure: inappropriate pressure will make the product density is uneven, affecting the surface.
Solution: Adjust the pressure parameters according to the actual situation.
4. Mold design and quality: unreasonable mold structure, rough surface or damage will be reflected in the product.
Solution: Optimize the mold design, maintain and repair the mold regularly.
5. Cooling rate: uneven cooling or too fast or too slow will cause surface problems.
Solution: Reasonable design of cooling system to ensure uniform and moderate cooling.
6. Effects of additives: Improper use or quality problems of certain additives may affect the surface.
Solution: Select the appropriate additives, and strictly control the amount and quality.
7. Production environment: Dust, impurities, etc. into the production process will pollute the surface of the product.
Solution: Keep the production environment clean and take necessary dust prevention measures.
For example, in actual production, if there are bubbles on the surface of PE profiles, it may be caused by insufficient drying of raw materials or high processing temperature, which can be solved by strengthening the drying treatment of raw materials and appropriately reducing the temperature. For the fine scratches on the surface of the mold, it can be improved by fine grinding, so as to improve the surface quality of the product. The selection and use of additives should be careful, and adequate testing and verification should be carried out to ensure that they have a positive effect on surface quality rather than a negative impact. In short, understanding and mastering these factors and solutions are of great significance for the production of high-quality PE profiles.
