Easily adhseive polyamide film

摘要

The specification describes an easily adhesive polyamide film prepared by (i).coating a non-stretched or uniaxially stretched and non-heated polyamide film with a water-based coating mixture which contains components A, B and C wherein (A).is a water polyurethane resin containing acetylene glycol in which two adjacent triple-bonded carbon atoms are replaced with a hydroxyl group and a methyl group and/or a non-ionic surface active agent which is an addition product of the ethylene oxide; (B). is a water-soluble polyepoxy compound; and (C).has particles with an average diameter between 0.001 and 1.0 um, of which the solid-content weight ratio is 98 - 30/2 - 70/0.1 - 10 the coating amount after stretching is between 0.005 and 0.030 g/m2, the film is stretched in at least one direction and then heated. This film possesses good blocking resistance and excellent adhesiveness with print ink, laminate, and other coating mixtures, and is especially suitable for boiling sterilization, retort sterilization, and packaging of liquids.