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Why does black masterbatch for PE blown film produce color difference? What are the factors that cause it?

Time: 2021-05-28 15:07:57

Author: Dongguan Tereal Plastics Factory

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There are many kinds of black masterbatches in our company, among which the high-end blown film series is one of the black masterbatches. High-end blown film series black masterbatches are mostly used...

There are many kinds of black masterbatches in our company, among which the high-end blown film series is one of the black masterbatches. High-end blown film series black masterbatches are mostly used in PE as a carrier, specifically used in garbage bags, undershirt bags, shopping bags, agricultural film and other plastic products.The advantages of black masterbatches for PE blown film are: good dispersion, strong fluidity, blue phase, effectively reduce the defective rate of products. But PE blown film with black masterbatch improper use will often appear color difference phenomenon, which is mainly related to three major factors, namely, extrusion, the environment and man-made reasons.

PE吹膜用黑色母粒

Clogging of the extruder filter will lead to discoloration of the black masterbatch for PE blown film in the barrel. Screw shear effect is different will also lead to PE blown film with black masterbatch dispersion is not consistent, so to replace the extruder to pay attention to the technique, otherwise it will also lead to PE blown film with black masterbatch caused by color difference.


PE blown film with black masterbatch on the production environment requirements are high, the air floating dust is easy to pollute the environment, thus affecting the color difference of PE blown film with black masterbatch. Therefore, the isolation protection between the production line should be done, in addition to timely cleaning can not be ignored.


Errors in the selection of raw materials, color matching, sampling, weighing and processing processes, these details will have an impact on the color difference of black masterbatches for PE blown film. With the application of new materials and new technology, the control of color difference has been improved.


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