MULTI-LAYER RECEPTACLE AND RESIDUE REMOVAL METHOD THEREFOR

摘要

A receptacle is disclosed having an interior surrounded by a container bo dy formed of two layers of different material. The inner layer is soluble in the presence of a selected solvent while the outer layer, which is supporte d by the inner layer, is formed of a material that is insoluble in the prese nce of the solvent. The inner layer may particularly be either hot or cold w ater soluble and may specifically be formed of polyvinyl alcohol. The outer layer may be in the form of frangible shell that is bonded to the inner laye r and formed of a water insoluble material. The container body may further i nclude a middle layer interposed between the inner and outer layers. A metho d of removing chemical residue from a container is also provided. The method comprises contacting the inner layer of the container body with sufficient quantity of water to dissolve the inner layer.