Heat-shrinkable polyester film roll
AssigneeToyobo Co., Ltd.
InventorsMasayuki Haruta, Norimi Tabota
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AssigneeToyobo Co., Ltd.
InventorsMasayuki Haruta, Norimi Tabota
Estimating the term…
The invention provides a heat-shrinkable polyester film roll containing a paper tube and a heat-shrinkable polyester film wound around the paper tube to form the heat-shrinkable polyester film roll, wherein (1) the film winding length is 2000-20000 m, (2) the film width is 400-2500 mm, (3) the film thickness is 5-30 μm, (4) unevenness in thickness in the film widthwise direction in a film roll surface layer part is 12% or less, (5) the paper tube has an inner diameter of 3 inches, a difference in clearance of the paper tube in a widthwise direction after removal of the film from the film roll is 0.5 mm or less, and a flat compressive strength of the paper tube after removal of the film is 1700 N/100 mm or more, and (6) the average value of winding hardness in the widthwise direction in the film roll surface layer part is 500-850.
A heat-shrinkable polyester film roll comprising:
Dependencies are inferred from the claim text.