HEAT-SHRINKABLE POLYESTER-BASED FILM

PROBLEM TO BE SOLVED: To obtain the subject film having a high heat shrinkage rate and not generating film defects such as wrinkles and distortion upon the heat shrinkage of the film, by including a specified polyester and specifying the heat shrinkage rate of the film and the density of the heat-sh...

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Bibliographische Detailangaben
Hauptverfasser:	ISAKA TSUTOMU, TAKEGAWA YOSHIAKI, KUZE KATSURO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain the subject film having a high heat shrinkage rate and not generating film defects such as wrinkles and distortion upon the heat shrinkage of the film, by including a specified polyester and specifying the heat shrinkage rate of the film and the density of the heat-shrunk film. SOLUTION: This film comprises (A) a polyester containing ethylene terephthalate units in an amount of 40-80 mol.%, preferably 40-75 mol.%, more preferably 40-70 mol.%, if necessary (B) additives such as a lubricant, an antistatic agent, an antioxidant, an ultraviolet light absorber, a coloring agent, and has a heat shrinkage rate of >=30% (at 100 deg.C) in a predetermined film direction, and a film density of