Patent ID: 7556707

Claim:
A method of making a pouch-in-pouch body waste collection appliance having an outer pouch formed of odor-impermeable thermoplastic film with proximal and distal walls defining a chamber and a toilet-disposable inner pouch having proximal and distal walls and being disposed in said chamber; said proximal walls of said inner and outer pouches having aligned body waste receiving openings therein; said walls of said inner pouch being formed of a laminate composed of (a) a layer of thin heat-sealable thermoplastic film, and (b) a porous water-disintegratable cover layer of water-dispersible fibers attached to exterior surfaces of said inner pouch film; wherein said method comprises the steps of selecting a material for the film of said inner pouch having a melting temperature substantially lower than that of the material of said outer pouch; and joining together peripheral portions of said walls of said inner and outer pouches, and portions of said proximal walls of said inner and outer pouches surrounding said body waste receiving openings, by simultaneously applying pressure and heat to said portions so that said proximal and distal walls of said inner pouch are welded together and, simultaneously, said film material of said inner pouch melts and invades the pores of said fibrous cover layer to a greater extent than said film material of said outer pouch, whereby upon the subsequent application of peeling forces, said walls of said outer pouch may be peeled away from said inner pouch without causing separation of said cover and film layers of said inner pouch.