posted 10-23-2002 11:15 AM
This posting was done anonymously, the poster is known to FSD administration and will be provided to all interested parties as approbate.
I am an engineer in South America and Im working in a woven bags factory in Quality Control. We have a problem with a determinate PP material. 1. We need in black material use Anti UV in the melt. Normally whe dont use it. 2. The feed screew was damaged in the feed zone and this PP Material have a size and a form which increase our actual input in 30%. The problem is if we dont use Anti Uv we have a bad tape, its have very bad appereance (it not plane). This is the operations condition with others material Screw: 100 RPM Temperatures : 190 - 220 ºC Output : 185 m/min (140 kg/h) OPeration Conditions with PP Material with Anti UV Screw: 100 RPM Temperatures : 190 - 220 ºC Output : 250 m/min ( 185 kg/h) We need some information about what is tha best sizel, form of the PP to increase the otuput of the machine. How the uniformity can increase or decrease the extrusion process Why the tape have this degradation what happen in the freed screw that we need to use Anti UV Thanks a lot and sorry I dont know English very well.
posted 10-23-2002 11:15 AM
