Polyrocks
Polyrocks Chemical Co., Ltd

Tel:+86-763-3125898

Fax:+86-763-3125901

Email:sales@polyrocks.com

Add:Xiongxing Industrial Park, High-tech Industrial Development Zone Qingyuan City, Guangdong Province, China

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If the parts appear gray and dark for HFFR PBT processing?[ 2013-03-22 ]
If the parts appear gray and dark for HFFR PBT processing? To strictly control he molding temperature of the parts equal to or less than 255 ° C, and as far as possible to shorten the molding time, in order to avoid the long time duration of the molten material in the high temperature environment to cause the decomposition of the flame retardant.
The wire surface is roughness?[ 2013-03-22 ]
According to many scientific research shows, halogen materials have become daily pollutant diffusion everywhere in the environment, and the environmental and human threats rising. And manufacturing, recycling, or discarded appliances and other consumer products, is caused by these pollutants released into the environment the main way.
The extruded speed is slow, the motor current is too high, and there is friction sound between the screw and barrel.[ 2013-03-22 ]
The extruded speed is slow, the motor current is too high, and there is friction sound between the screw and barrel. To increase the stencil aperture, to choose a small mesh size filter (clean); to reduce the temperature of the feed section, appropriately increase the temperature of compression section and metering extruder; use the low compression ratio screw to assure the plasticizing.
If there are pimples on wire surface.[ 2013-03-22 ]
If there are pimples on wire surface? appropriate to increase the extrusion temperature or reduce the screw and pulling speed; strict inspection of impurities when feeding, and to prevent mixed with other materials; reasonable set the processing temperature, regular cleaning of the extrusion system, to choose a suitable machine and reasonable model to prevent scorch knots; replace the material.
Bad plasticizing before extrusion, the wire surface has hairy and no gloss, or even appear like a toad skin, or there is an obvious line at the adhesion of extruded layer?[ 2013-03-22 ]
Bad plasticizing before extrusion, the wire surface has hairy and no gloss, or even appear like a toad skin, or there is an obvious line at the adhesion of extruded layer? To improve the body and die temperature; to reduce the screw speed and traction speed; replace the material
Fluctuations of extrusion OD in wire processing?[ 2013-03-22 ]
Fluctuations of extrusion OD in wire processing? To lower the temperature of the extruder feed zone; make sure the material to obtain sufficient and stable thrust in the barrel; adjust the traction device, and keep it running smoothly, to control the semi-finished diameter in the former processing.
The wire surface has fairy and bubble, or the extruded cross-section has bubble?[ 2013-03-22 ]
The wire surface has fairy and bubble, or the extruded cross-section has bubble? If the material is placed too long, it should be pre-dried before use; reasonable set of processing temperature, lower the temperature of the body and die, should strengthen inspection whether the heating and the cooling system is working properly, during the extrusion process; reduce the screw speed, or even to replace it with the low compression ratio screw.