SEALANT LAYER COMPOSITION FOR EASY PEEL MULTI-LAYER AND MULTI-LAYER HAVING SEALANT LAYER USING THE SAME

摘要

The present invention relates to a sealant layer composition, which comprises: (a) polyethylene selected from ethylene homopolymers, copolymers and mixtures thereof; (b) a first polybutylene selected from butylene homopolymers, copolymers and mixtures thereof and having a melt index (MI) of 0.1 to 3 g/10 min, measured at the temperature of 190C under a load of 2.16 kg; and (c) a second polybutylene selected from butylene homopolymers, copolymers and mixtures thereof and having the MI of 10 to 20 g/10 min, measured at the temperature of 190C under a load of 2.16 kg, and to a multi-layer film having a sealant layer comprising the same. By comprising polybutylene having the MI different from the MI of polyethylene in the sealant layer, the deviation of the sealing strength is small in a wide range of the sealing temperature, and an easy peel function is obtained.