Polyolefin shrink wrap film is a sort of shrink film which regarded as a sustainable plastic shrink wrap material,it is easy to degrade in the natural environment when preserving in a certain period.it is mainstream shrink film that is leading the package trend in the shrink film wrap industry now thanks to its super clarity,high heat shrinkage and non poison chemical property.
Now we take some comparison with PE/PVC to figure out why the Polyolefin shrink film(pof heat shrink film)can stand out from the other shrink wrap film materials.
Physical performance
POF
Thin and tough,Homogeneous thickness,Good moisture resistance,High tensile strength,Good tear resistance,Adjustable thermal shrinkage rate ,Good rub resistance due to LLDPE
PE
Thickness and tough,Homogeneous thickness,Good moisture resistance,High tensile strength,
Tear resistance is lower than POF but much higher than PVC
Bad adjustable thermal shrinkage rate,Lower Rub resistance
PVC
Thickness and tough,Inhomogeneous thickness,Bad moisture resistance,Low tensile strength,
Low Rub resistance
Cold resistance
POF
Excellent cold resistant ,No embrittlement happen even under condition of -50℃,being used in freeze food pack.The products that packed with pof shrink film suit for long time preservation in temperature range From -50℃ to 95℃ without any deformation Through the electrostatic and
anti-fog handling to prevent dust contamination for maintaining good product appearance.
PE
Excellent cold resistant ,No embrittlement happen even under freeze conditionNo breakage in the transportation process Through the electrostatic and anti-fog handling to prevent dust contamination for maintaining good product appearance.
PVC
Bad cold resistance ,Embrittlement happen even under freeze condition.Easy to be fracture in transportation process.The product packed by PVC can be gradually tightened as time going ,causing deformation problem.Easy to get contaminated
Process performance
POF
No moisture caused in Processing procedures ,no adhesive to the seal bar, easy maintenance work.Good toughness, smoothness, rub resistance suit for high speed packing production line
PE
No moisture caused in Processing procedures ,no adhesive to the seal bar, easy maintenance work.Good toughness, smoothness, rub resistance suit for high speed packing production line
PVC
No moisture caused in Processing procedures ,no adhesive to the seal bar, easy maintenance work.Good toughness, smoothness, rub resistance suit for high speed packing production line
Safety performance
POF
After shrink, the seal position appear to be quick soft won’t cause any incised wood accident
PE
After shrink, the seal position can be quick soft won’t cause any incised wood accident
PVC
After shrink ,seal position can be sharp and hard ,easy to cause the incised wood accident.
Environment protection
POF
Nontoxic ,no poison gas caused in process procedure ,complying with FDA and USDA standard
PE
Nontoxic ,no poison gas caused in process procedure ,complying with FDA and USDA standard
PVC
Toxic and smelly gas caused in process production.
Cost
POF
Density 0.92,Minimum thickness 0.012mm,low cost
PE
ensity 0.92,Minimum thickness 0.03mm,high cost
PVC
Density 0.92,Minimum thickness 0.03mm,high cost