Patent ID: 6150451
Filing Date: 2000-11-21
Classification: C08L,D21C,D21H,Y02W

Abstract:
A composition for providing a repulpable moisture vapor barrier coating for flexible packaging material, which comprises:a wax-free polymer emulsion wherein said polymer in said emulsion has a particle size distribution finer than about 10.mu., said polymer having moisture vapor barrier properties;a particulate material additive comprising carboxylated styrene-butadiene having a mean particle size smaller than about 10.mu., said particulate material additive being capable of interstitial combination with said polymer particles and of giving a coating on said flexible packaging material which preserves moisture vapor barrier properties provided by said polymer, and which upon repulping of the coated flexible packaging breaks up into pieces generally smaller than about 1.6 mm;said composition enabling said coating to break up into said pieces generally smaller than about 1.6 mm.