Shrinkable polyester film

Details Shrinkable polyester film Shrinkable polyester film

1989-06-30

1990-07-03

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528302, 528304, 528306, 5283082, 5283086, 528502, 528503, 525437, 2641761, 26417719, 2642896, 2642902, 2642105, 2642107, C08G 6302

Patent

active

049392328

ABSTRACT:
Disclosed in this invention is a shrinkable polyester film having a shrinkage of not less than 40% after 5-minute treatment in a 100.degree. C. air oven in one of the machine and transverse directions, and a shrinkage of not more than 15% after 5-minute treatment in a 100.degree. C. air oven and a maximum shrinkage stress of not more than 50 g/mm.sup.2 at 40.degree. to 100.degree. C. in the other direction. The shrinkable film of this invention has the excellent shrink characteristics and are substantially free from wrinkling, curling at the end and non-uniformity of shrinkage when the film is shrunk, so that it is suited for use as a label film and has a high industrial value.

REFERENCES:
patent: 2928132 (1960-03-01), Richards
patent: 4020141 (1977-04-01), Quinn et al.
patent: 4766033 (1988-08-01), Yoshimura et al.

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