Common ills of black masterbatch blow
　　A thin, flat, the brightness difference, sealing is not strong.
　　1 (the brightness difference) color masterbatch carrier improper selection, carrier is too small;
　　2 (flatness) of black masterbatch filling too much;
　　3 (seal not firmly) color masterbatch containing wax is too high.
The solution:
　　1 (the brightness difference) selection of suitable carrier or increase the amount of carrier.
　　2 (smoothness) reduced color masterbatch filled.
　　3 (seal not firmly) reduced color masterbatch for PE wax content. Pressure and temperature regulating sealing machine.
　　The surface was two, film the fog shape.
　　Cause: 1 Color Masterbatch filled multi (filled mesh too small); 2 polyethylene improper selection (such as A.B.C PE renewable materials), raw material melting refers to the melting point is too high or too low, renewable 　　materials production when the mesh is too low. The 3 threaded sleeve combined weak cause of extrusion screw too fast, or body temperature is too high or too low black masterbatch dispersion.
　　Solution: replace the high mesh filling. Or reduce the fill volume, strengthening thread sleeve molybdenum alloy, proper adjustment of the die head, body temperature, the appropriate choice of polyethylene resin, die head over the net refinement.
　　Three, pipe extrusion pressure rupture.
　　Factors: 1 black masterbatch containing impurities. Contain water, pore; 2 factors such as coking lead pipe extrusion machine pigment dispersion is not good, the inner wall of the tube and the appearance of a chlamydia, after pressure test cause pipe rupture.
　　Solution: increase the filtering fineness, strengthen the filtering color masterbatch production, strengthen the mixing, vacuum pumping, selection of high quality organic pigments, improve color masterbatch liquidity.