Patent ID: 7901735
Filing Date: 2011-03-08
Classification: B05C

Abstract:
1. A method for continuous coating of an inside of a continuously extruded hollow profile strand of elastic material, comprising: guiding a hollow profile strand on a curved, arcuate path through a supply of a liquid coating agent that remains stationary in a location; wetting inner walls of hollow chambers of the hollow profile strand with the liquid coating agent, and, directly after running through the supply of the liquid coating agent, guiding the hollow profile strand upward along a rise in the path of the hollow profile strand; and wiping excess liquid coating agent from one or more inner walls of the hollow chambers by liquid wipers mounted inside the hollow chambers, by moving the hollow profile strand continuously in relation to the liquid wipers, wherein the liquid wipers include at least one magnet or magnetizable material and at least one wiping lip that touches only a portion of a cross-sectional perimeter of the inner walls, the liquid wipers being arranged in a region of the rise in the path of the hollow profile strand downstream of the supply of the liquid coating agent and being held at a constant position within the path of the hollow profile strand by counter magnets or magnetizable materials, which are fixed next to an outer side of the continuous hollow profile strand.