Patent ID: 6547907
Filing Date: 2003-04-15
Classification: B29C,B29L

Abstract:
A method for producing a rotationally symmetric body comprising the steps of;i) supporting and rotating an inner layer of the body made of elastomeric material on a rotating core; ii) guiding thread onto said inner layer via a winding device movable back and forth parallel in relation to a longitudinal axis of said rotating core, wherein said thread is applied as a continuous thread running back and forth around the body in the form of a steep helix, forming a plurality of layers of plies of thread with a crossed arrangement from layer to layer, and wherein said thread is arranged substantially parallel within a single layer of said plies of thread; iii) mixing at least two reactive liquid or pasty components and forming a reaction mixture in a molding head; iv) applying a reaction mixture via said molding head to said inner layer and said thread to form a strength supporter, wherein said molding head is movable back and forth parallel in relation to a longitudinal axis of said rotating core, and wherein said reaction mixture is incorporated with said thread when a reaction degree of said reaction mixture is less than or equal to 50% based on the start of said mixing process in said molding head; and v) covering said strength supporter with an outer layer made of elastomeric material.