HEAT-SHRINKABLE POLYESTER FILM AND LABEL USING RECYCLED PET BOTTLE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a heat-shrinkable polyester film that qualifies for PET bottle recycle recommendation mark.

SOLUTION: The heat-shrinkable polyester film is produced by laminating layers essentially comprising a noncrystalline raw material on both sides of a substrate layer containing 45-80 wt.% recycled PET bottle material. The heat-shrinkable polyester film is at least uniaxially drawn. After being dipped in hot water at 80°C for 10 sec and drawn up, the film achieves a heat-shrinkage rate in the main-shrinkage direction of≥30% and a heat-shrinkage rate in the direction perpendicular to the main-shrinkage direction of≤10%.

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