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Cause blowing three big black masterbatch for chromatic aberration

Said color of our mouth blows film black mother important indicators of quality control in the manufacturing process, to introduce a major cause color masterbatch, color has three main points:

Extrusion: toner heat resistance bad, blown film black mother manufacturing must be cold. Can't keep longer in the extruder. Extruder die filter plug, barrel buildup also can cause discoloration. Poor heat resistance of the material cannot be secondary granulation. Decomposition of PVC resin production be shut down to prevent Coke color. If shear resistance of toner, it would be appropriate to lower temperature and increase screw speed, increase the viscosity of the melt, transfer shear, toner dispersed coloring strength. Pearlescent color effect is a bit poor, can raise the temperature the melt viscosity, shear viscosity reduction on Pearlescent effect of particle size becomes smaller. Such as Pearlescent effect is too good, you can reverse; the pearlescent effect is very poor, lower screw rotation speed, temperature, or replace the small shear screw. Replacement extruded opportunity caused by chromatic aberration, resulting mainly screw shear dispersion is inconsistent.

Environment: blowing film black mother produces particularly high environmental requirements. Majority of those due to colorant powder, floating dust in the air pollution. Isolation between production lines and cleared up, it is necessary, can not be ignored. Residues from the device on the next batch of products would be affected. Mixers, extruders, feeding devices, storage tanks and cutting machine and so on must be thoroughly cleaned. Production of the same carrier from the colour, dark to light remove screw must clean up. Same machine manufacture master, due to carrier changes, causing incompatibility affects the color. Processing temperature, melt temperature and decomposition temperature, can cause focal color. Must remove screw, if necessary clean up.

Human error: human error is possible: wrong weighing, feeding, processing studies. From the understanding of customer needs, select raw materials, color matching, color masterbatch sample start to mass production, each process, strictly, be confirmed, you can reduce waste, stabilize and improve product quality. With the application of new materials and technologies, chromatic aberration control technology will continue to improve and enhance.

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