Patent ID: 6238604
Filing Date: 2001-05-29
Classification: B29C,B32B

Abstract:
In a method for producing a composite tub having at least one steel tub and at least one acrylic tub firmly connected with each other, wherein in a first step a deep-drawn acrylic blank is inverted over a core, the improvement comprising:positioning an outer mold shell (13) at a distance over the acrylic blank (1),then sealing the outer mold shell (13) and the acrylic blank (11) against each other and injecting a reaction resin into a first space formed between the outer mold shell (13) and the acrylic blank (11),after curing the reaction resin (15) removing the outer mold shell (13),then positioning a steel blank (14) on the cured reaction resin (15) and sealing the acrylic blank (11) and the steel blank (14) against each other, andthen injecting a polymer foam (16) into a second space formed between the acrylic blank (11) and the steel blank (14) and after cross-linking unmolding the composite tub (10).