How to reduce black spots in injection molded parts?
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- Unsolveddestoon
- 2021-07-11 19:00
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- 1Flooranonymity
- 2021-08-09 16:12
In the process of plastic molding, there are only a few systems: plastic raw materials, molding machines, molding conditions, molds, environment, and operators; it can be deduced from this that the system sources of black spots are these.
Factors that may cause black spots in plastic materials include: crumbs, insufficient drying, and mixing.
1.For the molding machine, the wear and residual glue of the three-piece screw set should be paid attention to.
2.The molding conditions do not need to be spread out, and the operator can usually handle it by adjusting the machine.
3. Pay attention to the problems of exhaust and cleaning in the mold.
4.Need to pay attention to the surrounding environment and the operator's issues. According to actual work experience, these two points are easy to be ignored by everyone, but in fact they will have a great impact on plastic products, so we must pay attention to it; go to the actual production site to see and communicate with front-line operators , So that it will be easier to find the source of the problem.
5. Of course, there is usually not only one source of plastic molding, and it is usually the result of the superposition of multiple factors. Therefore, after roughly determining the next few main factors, it is necessary to use relevant test equipment and some corresponding experimental verifications to determine The exact source, and then improve the specific source to observe the final effect!
Factors that may cause black spots in plastic materials include: crumbs, insufficient drying, and mixing.
1.For the molding machine, the wear and residual glue of the three-piece screw set should be paid attention to.
2.The molding conditions do not need to be spread out, and the operator can usually handle it by adjusting the machine.
3. Pay attention to the problems of exhaust and cleaning in the mold.
4.Need to pay attention to the surrounding environment and the operator's issues. According to actual work experience, these two points are easy to be ignored by everyone, but in fact they will have a great impact on plastic products, so we must pay attention to it; go to the actual production site to see and communicate with front-line operators , So that it will be easier to find the source of the problem.
5. Of course, there is usually not only one source of plastic molding, and it is usually the result of the superposition of multiple factors. Therefore, after roughly determining the next few main factors, it is necessary to use relevant test equipment and some corresponding experimental verifications to determine The exact source, and then improve the specific source to observe the final effect!