Patent ID: 6099683
Filing Date: 2000-08-08
Classification: B29D,B32B,Y10T

Abstract:
Process for the production of a composite sheet, which comprises:applying a thermoplastic adhesive to a cellular core having a plurality of cell faces;locating the thermoplastic adhesive on the cellular core in the form of drops only on the cell faces;providing an outer layer;providing thermoplastic adhesive on the outer layer on the side thereof facing the cell faces of the cellular cores;feeding the outer layer with said thermoplastic adhesive thereon onto the cell faces of the cellular core; andbonding said outer layer with said thermoplastic adhesive layer thereon to the cell faces of the cellular core under pressure and at elevated temperature, said bonding step comprising mating said outer layer to said cell faces of said cellular core so that the cellular core thermoplastic adhesive and the outer layer thermoplastic adhesive contact each other.