Polyester film roll

Details Polyester film roll Polyester film roll

1985-07-18

1986-03-18

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 685, 242 65, 242 751, B65H 1810, B65H 1816

Patent

active

045763445

ABSTRACT:
A polyester film roll free from wrinkles over a long period of storage consists of a polyester film having a thickness of 25 microns or less and a centerline average surface roughness of from 0.001 to 0.05 microns and is characterized in that the roll hardness (H) and the centerline average surface roughness (Ra) of the film roll satisfy the relationship (I):

REFERENCES:
patent: 3737030 (1973-06-01), Stewart
patent: 4150797 (1979-04-01), Kataoka

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