Is there any way to solve the problem of low surface gloss of plastic pet dog toy
1, injection molding machine, injection speed is too fast, the material retention time is too long can also cause plastic products surface gloss drops; Solution: lower injection molding machine injection speed, reduce the residence time of material.
2, material thermal stability is poor, usually under the condition of 100 ℃ environment easy to decompose, 180 ℃ decomposition will accelerate. Solution: use good thermal stability, good gloss materials or can be added in the materials and reasonable to add a certain amount of heat stabilizer.
3, mold temperature is too low, in the manufacturing process of cooling speed too fast, when the melt in the process of mold filling, the cavity wall has already formed the scale, the scale is vulnerable to a variety of forces, to change the white muddy, reducing product surface gloss. Solution: should before starting to use mould, to mould heating in advance, improve the working temperature of mould, the lower cooling rate or in the mold gate adopt measures such as local heating.
4, raw material moisture absorption or contain volatiles are common reasons for plastic products surface gloss. Solution: to fully dry before use the material, when it is necessary to establish the dryer.
5, excessive use of release agent, also can make plastic products surface. Such defects. Solution: should as far as possible need not or use a small amount of release agent, evenly daub.
6, the product quality of raw materials for plastic products surface gloss, only mixed with impurities will make products surface gloss. The solution: using high quality raw materials or use to remove impurities.
7, injection molding machine of the runner and gate size is too small, poor exhaust can cause product surface gloss is not good. The solution: should increase the runner and gate size, adding exhaust slot.
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