Shandong Longsheng Masterbatch Co., Ltd
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Add:No.127, Yanzaohang Village, Xuyuanzi Township, Qingyun County, Dezhou city, Shandong Province

Fax:+86-531-88257710

Mob:+8618053491991

Email:twinklesheng@gmail.com

Web:www.masterbatch-ls.com

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Common defects of masterbatch
Apr 24, 2018

1, in the sunlight, the product has a striped pigment band

This problem needs to be considered from two aspects: plastic physical and mechanical properties and plastic molding process:

1.1 The temperature of injection molding equipment is not controlled well, and the masterbatch cannot mix well with the resin after entering the mixing chamber.

1.2 The injection molding machine did not add a certain back pressure, and the mixing effect of the screw was not good.

1.3 The dispersibility of masterbatch is poor or the plasticization of the resin is not good.

The following adjustments can be made to the process: 1. The temperature of the mixing chamber is slightly increased by the part of the blank outlet 2. A certain back pressure is applied to the injection molding machine.

If the above adjustment is still not good, it may be the problem of dispersibility or matching of masterbatch and resin, and it should be resolved with the masterbatch manufacturer.

2, after using a certain masterbatch, the product appears to be more easily broken

This may be due to poor diffusion and miscibility caused by the poor quality of dispersants or auxiliaries used by the manufacturer, affecting the physical and mechanical properties of the product.

3, according to the proportion of color masterbatch used, the color is too dark (too shallow)

Although this issue is simple, there are many possibilities. Specifically:

3.1. Color masters have not been carefully tried, too little or too much pigment

3.2. Inaccurate metering at the time of use, and there is a large number of phenomenon that domestic enterprises, especially SMEs, randomly measure

3.3. There is a problem with the matching of color masterbatch and resin, which may be due to the improper selection of the masterbatch carrier, or it may be that the manufacturer randomly changes the resin type.

3.4. Improper temperature of the machine, long time for the masterbatch to stay in the machine

Processing procedure: First, check whether the resin type matches the masterbatch and whether the measurement is accurate. Second, adjust the machine temperature or the rotation speed. If there are still problems, contact the masterbatch manufacturer.


  • Contact Us

    Add:No.127, Yanzaohang Village, Xuyuanzi Township, Qingyun County, Dezhou city, Shandong Province

    Fax:+86-531-88257710

    Mob:+8618053491991

    Email:twinklesheng@gmail.com

    Web:www.masterbatch-ls.com

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