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Masterbatch Solutions to Common Problems
Published on January 13 2015
1.In the sunlight, there are stripe-like pigment band with the products
This problem needs consider physical and mechanical properties of plastics and plastic molding process two aspects:
(1) Injection did not control the temperature of the device, after the masterbatch into the mixing chamber can not be fully mixed with the resin.
(2) Injection molding machine does not add some back pressure, screw the mixing effect is not good.
(3) Plastic Masterbatch resin dispersion is not good or bad plastics.
Can be used for debugging in the following process:
(1). The mixing chamber by blanking the mouth a little part of the temperature increase
(2). To put some back-pressure injection molding machine.
If debugging is still not brought the matter by the above, it may be masterbatch resin dispersion or the matching problem, contact should be made with masterbatch solutions.
2.The product becomes easier to break when using the masterbatch
This may be due to manufacturers the choice of dispersing agent or additive proliferation of poor quality due to poor solubility, affecting the product's physical and mechanical properties.
3. According to the instructions on the proportion of use of masterbatch, the color is too deep (too shallow)
This problem is simple, but there are many possibilities, in particular:
(1) Masterbatch color without serious testing, too little or too much pigment
(2) Use of inaccurate measurement, the domestic enterprises, especially SMEs, the phenomenon of random measurement abound
(3) Masterbatch with resin matching problem, which may be inappropriate choice of masterbatch carrier, manufacturers may also be free to change the resin varieties
(4) Machine temperature properly, especially in high-color mother to stay too long in the machine, resulting in toner burned.
Process: First, check whether the masterbatch resin varieties match the accuracy of measurement, then adjusting the temperature or the speed of the machine. If there are still problems, should contact the masterbatch manufacturers.
4.The same Plastic Master Batch, resins and formulations, why the color of the products made by different injection molding machine is not the same?
This often caused by the injection molding machine. Different injection molding machine, the manufacture, use or maintenance conditions are different. Resulting in mechanical state of the difference, especially with the barrel of heating close to the original degree of difference, so that the dispersion of masterbatch in the barrel where the state is not the same as above phenomenon will appear.
5. After changed another brand of resin,the same masterbatch and formula,but the color also changed, why?
Different brand of resin, its density and melt index are different, so there will be differences in the performance of the resin, and the compatibility of masterbatch will be a difference, and thus the color change occurs. In general, as long as its density and melt index does not vary large, then the color will not be much difference, you can adjust the amount of masterbatch to a more positive colors.
6.The masterbatch has migration phenomenon during storage, will it affect the quality of products
Some masterbatch pigment content (or dye) is high, in this case, the migration is a normal phenomenon. In particular, the masterbatch is added dyes, the migration will be a serious phenomenon. But this does not affect the quality of the products, because injection into masterbatch products, the pigment in the product in a normal color concentration.
7. why the luster of some injection products is bad?
There are several possibilities: (1). Injection molding machine nozzle temperature is too low (2). Injection molding machine, mold finish is not good (3). Molding cycle is too long (4). Masterbatch contained too much titanium dioxide (5). Masterbatch dispersion is not good 8. Some plastic will fade after a period of time
Because the manufacturers use poor quality of the toner, so there is occurrence of drift.
9. Why ABS masterbatch particularly prone to color differences?
Different grades of ABS made by different countries, the colors are different. So even the same brands of ABS, there may be color batch lot number, use the color masterbatch color will also appear after the course. This is due to the characteristics of ABS caused, not in the international radical solutions. However, this color is usually not seriou
This problem needs consider physical and mechanical properties of plastics and plastic molding process two aspects:
(1) Injection did not control the temperature of the device, after the masterbatch into the mixing chamber can not be fully mixed with the resin.
(2) Injection molding machine does not add some back pressure, screw the mixing effect is not good.
(3) Plastic Masterbatch resin dispersion is not good or bad plastics.
Can be used for debugging in the following process:
(1). The mixing chamber by blanking the mouth a little part of the temperature increase
(2). To put some back-pressure injection molding machine.
If debugging is still not brought the matter by the above, it may be masterbatch resin dispersion or the matching problem, contact should be made with masterbatch solutions.
2.The product becomes easier to break when using the masterbatch
This may be due to manufacturers the choice of dispersing agent or additive proliferation of poor quality due to poor solubility, affecting the product's physical and mechanical properties.
3. According to the instructions on the proportion of use of masterbatch, the color is too deep (too shallow)
This problem is simple, but there are many possibilities, in particular:
(1) Masterbatch color without serious testing, too little or too much pigment
(2) Use of inaccurate measurement, the domestic enterprises, especially SMEs, the phenomenon of random measurement abound
(3) Masterbatch with resin matching problem, which may be inappropriate choice of masterbatch carrier, manufacturers may also be free to change the resin varieties
(4) Machine temperature properly, especially in high-color mother to stay too long in the machine, resulting in toner burned.
Process: First, check whether the masterbatch resin varieties match the accuracy of measurement, then adjusting the temperature or the speed of the machine. If there are still problems, should contact the masterbatch manufacturers.
4.The same Plastic Master Batch, resins and formulations, why the color of the products made by different injection molding machine is not the same?
This often caused by the injection molding machine. Different injection molding machine, the manufacture, use or maintenance conditions are different. Resulting in mechanical state of the difference, especially with the barrel of heating close to the original degree of difference, so that the dispersion of masterbatch in the barrel where the state is not the same as above phenomenon will appear.
5. After changed another brand of resin,the same masterbatch and formula,but the color also changed, why?
Different brand of resin, its density and melt index are different, so there will be differences in the performance of the resin, and the compatibility of masterbatch will be a difference, and thus the color change occurs. In general, as long as its density and melt index does not vary large, then the color will not be much difference, you can adjust the amount of masterbatch to a more positive colors.
6.The masterbatch has migration phenomenon during storage, will it affect the quality of products
Some masterbatch pigment content (or dye) is high, in this case, the migration is a normal phenomenon. In particular, the masterbatch is added dyes, the migration will be a serious phenomenon. But this does not affect the quality of the products, because injection into masterbatch products, the pigment in the product in a normal color concentration.
7. why the luster of some injection products is bad?
There are several possibilities: (1). Injection molding machine nozzle temperature is too low (2). Injection molding machine, mold finish is not good (3). Molding cycle is too long (4). Masterbatch contained too much titanium dioxide (5). Masterbatch dispersion is not good 8. Some plastic will fade after a period of time
Because the manufacturers use poor quality of the toner, so there is occurrence of drift.
9. Why ABS masterbatch particularly prone to color differences?
Different grades of ABS made by different countries, the colors are different. So even the same brands of ABS, there may be color batch lot number, use the color masterbatch color will also appear after the course. This is due to the characteristics of ABS caused, not in the international radical solutions. However, this color is usually not seriou