Far Eastern New Century Corporation

Yow-An Leu

Li-Ling Chang

Ting-Yu Lin

Chun-Chia Hsu

Wen-Yi Chang

Ching-Chun Tsai

Yi-Fen Chen

Disclosed herein are a heat-shrinkable polyester label film and a preparation method thereof. The label film has a shrinkage force not lower than 5.5 N in at least one shrinkage direction after immersing the heat-shrinkable polyester label film in water at 55° C. for 30 seconds, and a heat shrinkage rate of not lower than 50% in the shrinkage direction after immersing the heat-shrinkable polyester label film in water at 55° C. for 240 seconds.

Heat-shrinkable polyester label film and method for preparing thereof

A heat-shrinkable polyester film made of a polyester-forming resin composition includes a recycled material, and has an exothermic crystallization peak and an endothermic melting peak which are determined via differential scanning calorimetry, and which satisfy relationships of T2−T1≤68° C. and T3−T2≤78° C., where T1 represents an onset point of the exothermic crystallization peak, T2 represents an end point of the exothermic crystallization peak and an onset point of the endothermic melting peak, and T3 represents an end point of the endothermic melting peak. A method for manufacturing the heat-shrinkable polyester film is also disclosed.

Heat-shrinkable polyester film and method for manufacturing the same

A heat-shrinkable polyester film is made of a polyester resin composition, and has first and second crystal melting peaks at a respective one of first and second melting temperatures determined via differential scanning calorimetry. The heat-shrinkable polyester film further has a melting enthalpy in a range of larger than 0 J/g and at most 7 J/g which is calculated via integration of an area below the second crystal melting peak. The polyester resin composition includes a first polyester resin having a glass transition temperature ranging from 40&#xb0; C. to 80&#xb0; C., and a second polyester resin having a crystal melting temperature ranging from 220&#xb0; C. to 250&#xb0; C. and a melting enthalpy ranging from 40 J/g to 60 J/g.

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Taipei, Taiwan

Yow-An Leu