Key Word: Taili Plastic Machinery; Taili Plastic Machinery-Capacity Improving Expert; Efficient; Stable; Dark Spots On The Surface
Mr. Wang is a manufacturer of injection molded toys. Recently, he received a big order. In the process of mold testing of the newly-opened mold, there are always dark spots on the surface of the product. The adjusting technician suspected that the surface of the mold was not polished enough, but the mold technician vowed that he had polished it several times, and it definitely couldn¡¯t be the mold problem.
Taili Plastic Machinery helped check it according to the following ideas:
1£®Increase melting temperature and storage back pressure
The processing temperature of ABS material is relatively wide. The surface texture and dark spots are generally related to the fluidity of the material. The worse the fluidity of the raw material is, the lower the processing temperature and the back pressure of the storage material are, the easier this problem will occur..
2£®Observe the product style and analyze the location of dark spots
For injection molding process and product analysis, we must take specific conditions differently. If the dark spot occurs at the head or where the size and wall thickness change, we can the multi-stage injection method to ensure the relatively uniform injection speed at different wall thickness positions of the molten material, so as to ensure the precision of the product surface
3. Increase the holding pressure appropriately
If the above treatment doesn¡¯t work, it should be considered to increase the holding pressure and time, so as to ensure the surface precision of the product, and consider t the position and size of the mold nozzle to make accurate adjustment.
After the whole process of investigation, Mr. Wang solved the problem and started normal production!
Taili Plastic Machinery always keeps in mind that what a good injection molding machine factory should do is to help improving the capacity and boosting the profits, rather than offer the similar products the customers need. This is also what Taili Plastic Machinery keeps doing.
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