Masterbatch use common problems and solutions

1. In the sunlight, the product has striped color band
This problem required physical and mechanical properties of the plastic and plastic molding process two aspects:
1.1 Temperature control of injection equipment is not good, can not be sufficiently mixed with the resin after the masterbatch into the mixing chamber.
1.2 injection molding machine does add some back pressure, screw the mixing effect is not good.
1.3 masterbatch dispersion bad or resin plasticizing bad.
Technological aspects can debug as follows: 1. The mixing chamber by blanking the mouth portion of the temperature slightly improve 2. Apply some back pressure to the injection molding machine.
As it is still not brought the matter to the above debugging, it may be masterbatch, dispersible or matching resin and masterbatch manufacturers should contact to resolve.

2 After the use of certain masterbatch products seem easier to rupture
This may be undesirable due to the manufacturers of the selected dispersing or poor quality due to diffusion aid solubility, affect the physical and mechanical properties of products.

3 After pressing the proportion of masterbatch instructions on the use of color is too deep (too shallow)
The problem is simple, but there are many possibilities, in particular:
3.1 without serious test color masterbatch, pigments too little or too much
3.2. When using the measurement is not accurate, the domestic enterprises, especially SMEs arbitrary measure of the phenomenon abound
3.3. Problems match masterbatch and resin, which may be the carrier of choice masterbatch improper, it could be free to change the resin varieties manufacturers
3.4. The machine temperature abuse, masterbatch stay too long in the machine
Handler: First check the resin varieties matches masterbatch, measurement accuracy, followed by adjusting the machine temperature or speed, as there are still problems should masterbatch manufacturer.

4 The same masterbatch, resins and formulations, different injection molding machine out of the product color shades why?
This is often caused by reason of injection molding machines. Different injection molding machine varies manufacture, use or maintenance of the status of the time, resulting in differences in the mechanical state, especially close to the degree of difference between the original heating and barrel, so that the dispersed state in the barrel in the masterbatch is not the same, the above phenomenon will appear.

After 5 for another brand of resin, the same masterbatch and formulations, the color is changed, which is why?
Different grades of resin having a density and melt index will be different, so there will be differences in performance resins, and masterbatch compatibility will be different, so the color change occurs, generally speaking, as long as it is not a difference of density and melt index Great, so the color will not be much difference, you can adjust the amount of masterbatch to more positive color.

6 masterbatch occur during storage if the pigment migration phenomenon will affect the quality of the product?
Some masterbatch pigment content (or dye) is high, in this case, the migration phenomenon is a normal occurrence. In particular dye is added masterbatch, serious migration phenomenon will occur. But this does not affect the quality of products, since masterbatch injection molded products, the pigment concentration in normal coloration in the article.

7 Why do some injection products luster bad?
There are a variety of possibilities:
7.1. The nozzle temperature injection molding machine is too low
7.2. The injection molding machine mold bad finish
7.3. The article molding cycle is too long
7.4. The masterbatch contained excessive titanium dioxide
7.5. Masterbatch dispersion bad

8 After some time, some plastics fading will occur.
Manufacturer basic pigments used poor quality, drift phenomenon.

9 Why ABS masterbatch particularly prone to color difference?
Countries produce different grades of ABS color, so even the same brand of ABS, each batch batch there may be color, the use of colored masterbatch of course there will be color. This is due to the characteristics of ABS due in the international community has not yet definitive solution. However, this color is generally not serious.
RAJ Yancheng Masterbatch Co., Ltd. Main polypropylene, nonwovens masterbatch, functional masterbatch, black masterbatch masterbatch products. If necessary, please call us!