Polishing Treatment for Plastic Molds
Polishing Treatment for Plastic Molds With the widespread application of plastic products, such as daily-use items and beverage packaging containers, there is often a requirement
This question needs to be considered from two aspects: the plastic physical and mechanical properties and the plastic molding process:
Influence of plastic physical and mechanical properties:
The process can be adjusted as follows:
This may be due to poor diffusion and mutual solubility caused by the poor-quality dispersant or auxiliary selected by the manufacturer. And that affects the physical and mechanical properties of the product.
Although the problem is simple, there are still many possibilities, specifically:
Processing procedure:
First, check whether the resin variety matches the color masterbatch and whether the measurement is accurate.
Then, adjust the machine temperature and speed. If there are still problems, contact the masterbatch manufacturer.
It is often caused by the injection molding machine. Different injection molding machines have different mechanical conditions. And the differences due to different manufacturing, use time or maintenance conditions, especially the difference in the degree of close contact between the heating element and the barrel. It makes the dispersion state of the color masterbatch in the barrel different.
The density and melt index of different brands of resin will be different, so the performance of the resin will be different. Besides, the compatibility with the color masterbatch will also be different. All the above situation will cause color change. Generally speaking, as long as the density and melt index are not much different, the difference in color can’t be too much. You can correct the color by adjusting the amount of color masterbatch.
Some color masterbatches have high pigment content (or dyes). In this case, migration is normal. Especially the color masterbatches added with dyes will cause serious migration. But this does not affect the quality of the product. Because after the color masterbatch is injected into the product, the pigment is in the normal color concentration in the product.
There are many possibilities:
The basic pigments used by manufacturers are of poor quality and drift.
Different brands of ABS produced in various countries have a large color difference, even if the same brand of ABS. However, this chromatic aberration is generally not serious. When using ABS color masterbatch, users must pay attention to this characteristic of ABS.
Polishing Treatment for Plastic Molds With the widespread application of plastic products, such as daily-use items and beverage packaging containers, there is often a requirement
Injection Molding Techniques for TPE and TPR Injection Molding Techniques for TPE and TPR 1. Dry the TPE and TPR material before injection molding It
Winter Maintenance Measures for Injection Molding Machines As winter approaches and temperatures gradually drop, a cold chill envelops the earth. While ensuring personal warmth, it
Assessment Regulations for Mold Trial Exceeding 3 Times Assessment Regulations for Mold Trial 1. Purpose The purpose of this regulation is to standardize the work of