Patent ID: 9168710
Filing Date: 2015-10-27
Classification: B29D,B60J,F16B

Abstract:
1. A method of making a flexibly configured motor-vehicle convertible top comprising a flexible cover layer forming an outer face of the convertible top and having a cutout that holds at least one window, a circumferential inner edge of the flexible cover layer around the cutout being connected to an outer window edge by a polyurethane bead that is synthesized in a polyaddition reaction by reacting an isocyanate component with a polyol component, comprising the steps of: a) providing a flexible cover layer with a cutout therein in a mold; b) providing at least one window in the cutout; c) incorporating a polyurethane sealing compound made of two components, namely an isocyanate component and a polyol component in the form of a polyether polyol or a polyester polyol, into the mold in an intermediate space between a circumferential edge region of the flexible cover layer and an outer window edge, wherein the polyol component comprises at least the following constituents: d) reacting the two components in a polyaddition reaction at a temperature below 110° C. to form a polyurethane bead which provides a durable, mechanically secure and leak-proof connection between the circumferential edge region of the flexible cover layer and the at least one window; and e) removing the convertible top that was formed from the mold.