Screw adopts high quality alloy steel, precision machining, tempering and nitride treatment, with the best hardness and corrosion resistance, specially designed screw equipped with forced conveying bushing, reasonable structure, stable performance, good plasticizing, high yield, low energy consumption, clear delamination, is the ideal choice for the production of high strength, aging resistance, no drop, light transmission, heat preservation and other multi-functional membrane.
Specifications:
Screw diameter: φ45-φ150
Aspect ratio: 25-32
Product type:
For different ratio of plastic screw can be selected: ordinary type, pin type, barrier type, separation type, wave type, etc.
Application field:
1) polyethylene film
A) Ordinary polyethylene film, shrinkable packaging film, air cushion film, cling film (LDPE according to melt index), used in plastic film, seedling cultivation film, daily packaging bag, food packaging film, etc.;
B) Heavy packaging film (LDPE+LLDPE) should be used in heavy packaging bags
C) Greenhouse film (ordinary greenhouse film LDPE, enhanced greenhouse film LDPE+LLDPE)
2) polypropylene membrane
A) Blow molding Packaging Film (IPP film)
B) Extruded casting film (CPP film)
C) Biphase stretch film (BOPP film)
3) polyvinyl chloride film
A) Soft PVC blow film
B) Antirust shrink film
C) Rigid polyvinyl chloride transparent packaging film (PVC cellophane)
Treatment process:
Nitriding treatment
Technical parameters:
Nitriding depth :0.50mm-0.80mm
Nitriding hardness :900-1000HV
Nitriding brittleness :<=1 level
Screw straightness :0.015mm
After nitriding surface chromium plating layer hardness: ≥950HV
