Heat-shrinkable polyester film having excellent crystallinity

Details Heat-shrinkable polyester film having excellent crystallinity Heat-shrinkable polyester film having excellent crystallinity

2006-10-31

2006-10-31

Acquah, Samuel A. (Department: 1711)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C528S307000, C528S308600, C525S437000, C525S444000, C428S221000

Reexamination Certificate

active

07128863

ABSTRACT:
Disclosed herein is a heat-shrinkable co-polyester film having terephthalic acid and ethylene glycol as main components and containing 1,4-cyclohexanedimethanol at the amount of 3–40 mol %. The heat-shrinkable co-polyester film has a crystallization temperature of 80–220° C., a heat shrinkage (%) higher than 30% in at least one direction of longitudinal and transverse directions in 90° C. hot water, and a maximum shrinkage stress lower than 3 kg/mm2. The film is suitable for use as various wrapping materials, such as covering, binding and casing materials. Particularly, the film is used to cover a cap, body and shoulder, etc. of various vessels and rod-shaped molded articles and thus to provide labeling, protection, binding or an improvement in product value. Also, the film can be used for multi-package.

REFERENCES:
patent: 2004/0180229 (2004-09-01), Hayakawa et al.

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