Hardness and softness is the important factor of flexible PVC film. The hardness range of the flexible PVC film is 22PHR-60PHR.
Different from TPU film, whose hardness shows as Shore A value, PHR an important technical factor soft PVC vinyl film. The higher PHR value, the softer of the vinyl film. Flexible PVC vinyl film will be rigid and brittle if the working temperature low down, which will be weak quality.
How to keep the super clear soft PVC film roll hardness and good quality ?
Cold-resistant agent is necessary in the soft PVC film calenderng production. Cold-resistant flexible PVC film is available in the extreme cold regions, but keep good quality, high performance of elongation, tearing strength and softness.
