Patent ID: 6484879
Filing Date: 2002-11-26
Classification: B65D

Abstract:
A water soluble bag packaging system for transporting an agrichemical that chemically or physically reacts with water soluble films, said packaging system comprising;a bag containing an agrichemical composition having an agrichemical therein; said bag comprisingan outer cold water-soluble film layer and an inner barrier layer; said inner layer being a continuous film and preventing the agrichemical composition from contacting the outer cold water-soluble film layer, said outer cold water-soluble film layer providing structure to said bag packaging system, the inner barrier layer being a polymer layer which does not dissolve in water at temperatures above 50Â° C. and is selected from the group consisting of cellulose derivatives in which the degree of substitution is sufficient to prevent solubility above 50Â° C. selected from the group consisting of cellulose acetate lactate, cellulose lactate, methylhydroxybutyl cellulose, hydrophobically modified cellulose derivatives, and combinations thereof; whereby when the packaging system is placed in water and said outer cold water-soluble film layer dissolves, then said inner barrier layer dissolves or disperse into particles of up to about 250 microns and are small enough to allow the agrichemical to disperse into the water.