Patent ID: 6627132
Filing Date: 2003-09-30
Classification: A01G,B29C,B29K,B29L,C08J

Abstract:
A method of making a plant container having a copper-containing, non-delaminating layer comprising the steps of:applying to all or to a selected portion of a substantially flat sheet of thermoformable plastic a first layer of an aqueous coating composition comprising: approximately 20%-45% by weight non-delaminating acrylic latex, wherein the acrylic latex has thermal stability, the ability to be substantially stretched on heating to the softening point of the thermoformable plastic, and good adherence to the thermoformable plastic during and after thermoforming; approximately 8%-30% by weight copper hydroxide; approximately 2%-31% by weight filler; and approximately 0.5%-5% by weight dispersant; approximately 15%-41% by weight water; drying the coating composition on said plastic sheet; heating the coated plastic sheet to a temperature sufficient to soften said plastic sheet; and forming the coated and heated plastic sheet into a desired shape, such that said coated portion of the plastic sheet faces the portion of the plant container which holds the root portion of a plant.