COUCHE DE POLYOLEFINE PRESENTANT UNE ADHERENCE RENFORCEE VIS-A-VIS D'UNE SUBYCTITE EN MATIERE PLASTIQUE.

摘要

A rotational molding process for manufacturing objects having a foamed plastic substrate adhered to an outer polyolefin coating layer, and having improved adhesion therebetween comprising the combination of steps of: preparing a first outer coating layer of a stabilized polyolefin; forming a second inner layer of an at most slightly stabilized polyolefin contiguous with and on the interior surface of said first outer layer; and thereafter introducing a foamable plastic material onto the interior surface of said second layer and foaming said plastic material thereagainst thereby the foamed plastic is bonded to said second interior surface.