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Rushan Beihua for you to share the common problem of sharing masterbatch and how to solve the problem

Source: Time,Time:2017-03-01 14:15:46

Rushan Beihua for you to share the common problem of sharing masterbatch and how to solve the problem.Polyethylene wax processing, the commonly used material is masterbatch, today Rushan North for everyone to share the masterbatch common nine problems and solutions.
Rushan Beihua for you to share the common problem of sharing masterbatch and how to solve the problem
Polyethylene wax processing, the commonly used material is masterbatch, today Rushan North for everyone to share the masterbatch common nine problems and solutions.
Masterbatch is a new type of polymer material coloring agent This excellent coloring performance, energy saving, no dust, no pollution, large-scale use of plastic, building profiles, agricultural pipe coloring. But the masterbatch in the course of the use of some problems, the following we have a polyethylene wax manufacturers to give you a specific understanding of the reasons and solutions:
First, in the sun, the products have striped paint belt
The problem from the plastic physical and mechanical properties and plastic molding process to consider two aspects:
1, the temperature of the injection molding equipment is not controlled, the masterbatch into the mixing chamber can not be fully mixed with the resin.
2, the injection molding machine does not add a certain back pressure, screw mixing effect is not good.
3, the color of the poor dispersion or resin plastic is not good.
Process can be debugged as follows:
1. The temperature of the mixing chamber is slightly increased
2. Apply a certain back pressure to the injection molding machine.
If the above debugging is still not good, it may be color masterbatch, resin dispersion or matching problems, should be resolved with the masterbatch manufacturers.
 
Second, the use of a color masterbatch, the products seem more easily broken
This may be due to the manufacturer of the choice of dispersant or additives caused by poor quality of the poor miscibility, affecting the physical and mechanical properties of products.
Third, according to the proportion of the masterbatch instructions, the color is too deep (too shallow)
Although this problem is simple, but there are many possibilities, specifically:
1, color masterbatch without careful test, too little or too much paint
2, the use of measurement is not accurate, the domestic enterprises, especially small and medium enterprises are a large number of random measurement of the existence of the phenomenon
3, color masterbatch and resin match the problem, which may be improper selection of the masterbatch carrier, it may be manufacturers to change the resin varieties
4, the machine temperature improper, color masterbatch in the machine to stay too long
Processing procedures: first check whether the resin varieties and color master match, measurement is accurate, followed by the adjustment of the machine temperature or speed, such as the problem still should be to masterbatch manufacturers contact.
Four, the same color masterbatch, resin and formula, different injection molding machine products why the color depth?
This is often caused by the cause of the injection molding machine. Different injection molding machine due to manufacturing, use of time or maintenance of different conditions, resulting in differences in mechanical state, in particular, heating the original and the degree of close contact with the cylinder, so that the color of the cartridge in the dispersion of the state is not the same, the above The phenomenon will appear.
Five, for another brand of resin, the same color masterbatch and formula, the color has changed, which is why?
Different grades of resin its density and melt index will be different, so the performance of the resin will be different from the compatibility of the masterbatch will be different, resulting in color changes, in general, as long as its density and melt index difference is not Large, then the color difference will not be too much, you can adjust the amount of color master to correct the color.
6, Color Masterbatch in the storage process occurs Pigment migration phenomenon will affect the quality of products?
Some color masterbatch pigment content (or dye) is very high, in this case, the occurrence of migration is normal. In particular, the addition of dye color masterbatch, will occur serious migration phenomenon. But this does not affect the quality of the product, because the color masterbatch into the product, the pigment in the product in the normal color concentration.
Seven, why some of the injection products shiny bad?
Has the following possibilities:
1, the nozzle temperature of the injection molding machine is too low
2, injection molding machine mold finish is not good
3, product molding cycle is too long
4, color masterbatch contained too much titanium dioxide
5, color master's dispersion is not good
Eight, after a period of time, some plastic products will fade phenomenon.
Manufacturers of basic pigments used by the quality is not good, drift phenomenon.
9, why ABS color masterbatch is particularly prone to color differences?
Countries produce different grades of ABS color difference is large, even if the same brand of ABS, each batch number may also exist. However, this color is generally not serious. Users in the use of ABS color masterbatch, we must pay attention to the ABS of this feature.

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