HEAT-SEALABLE POLYESTER FILM

摘要

PROBLEM TO BE SOLVED: To provide a heat-sealable polyester film from which an element exerting an adverse effect on a product is removed. SOLUTION: This heat-sealable polyester film is a multilayered biaxially stretched coextrusion film equipped with at least a base material layer and a heat-sealing layer. At least one uppermost surface is the heat-sealing layer. The heat-sealing layer is a heat-fusible layer comprising a polyester. The total amount of an antimony element contained in the polyester constituting the heat-sealing layer is 5 wt. ppm or below. COPYRIGHT: (C)2005,JPO&NCIPI