In the production process, the profiled material will have poor product finish. The reason for the poor profile finish is, what is the solution?
1. The reason for the poor finish of the product: the mold finish is not high, and the mold temperature is too low
Because the surface finish of the product (the entire area in contact with the mold) is determined by the finish of the mold surface, if the finish of the mold is not good, the fine uneven surface will make the finish of the product worse, so in the product of transparent material, The light transmittance also decreases, and the transparency decreases
Because the mold temperature is high, the smoothness becomes better, so a large amount of warm water is used in the mold to keep the mold temperature at a certain value, so that the heat of the product can be transferred immediately, which can shorten the cycle and obtain products with low residual stress. In order to obtain a mold with a high degree of smoothness, hard chrome plating is performed on the surface of the mold product, but it is difficult to repair the mold after it is damaged.
2. Does the profile have poor finish? Solution
Instant: Increase mold temperature
Short-term: improve the surface finish of mold products
Long-term: Use hard mold materials and diamond grinding powder for grinding.
3. Due to the difference of materials
Because the material with poor fluidity is in contact with the surface of the mold profile product, it will be cured immediately, and the surface of the mold product cannot be said well. In addition, the material with insufficient pre-drying and the volatile content in the material evaporate, and it exists between the product and the mold after being in contact with the mold, which will make the product have poor finish and good finish materials: GPPS, ABS, PP And other engineering materials.
