| 摘要 |
The present invention refers to the method of producing sections of weldable roof felt having an adhesive layer on one side in the form of at least one longitudinal strip and a transversal strip of an adhesive material and a device for implementation of this method. In the method according to the invention a layer of adhesive mass ( 2 ) is applied to the bottom surface of the passing strip of an impregnated base wherein the surface of the strip is in contact with the rotating printing roller ( 3 ), the bottom part of which is immersed in liquid adhesive mass ( 2 ) and on its surface has a system of parallel regularly placed grooves ( 4 ) covering part of the circumference of the printing roller ( 3 ) and forming part ( A ) of its surface in the form a rectangular smooth field of the width corresponding to the width of the transversal strip ( 6 ) of the adhesive mass ( 2 ) layer, the surface of which, above the liquid mass ( 2 ) level, is in contact with the comb-shaped scraper ( 8 ) provided with a set of teeth fitting into the grooves ( 4 ) on the surface of the printing roller ( 3 ), wherein the comb-shaped scraper ( 8 ), every specific number of printing roller rotations, is totally moved away from the surface of the printing roller for the duration of angular shift and contact with the bottom felt ( 7 ) surface of the part of the printing roller ( 3 ) surface without any grooves ( 4 ), wherein the bottom surface of the felt ( 7 ) strip is coated in a known manner with a protective plastic foil ( 11 ) and then cut into sections, each of which has at least a single transversal strip ( 6 ) of an adhesive mass. The device is provided with the tank ( 1 ) of bituminous adhesive mass ( 2 ), where the printing roller is immersed ( 3 ), having on its surface a row of parallel evenly placed grooves ( 4 ) transversal to its axis, covering part of the circumference of the printing roller ( 3 ), where a single width is equal to the distances between the respective longitudinal ventilation strips ( 5 ) of an adhesive layer, forming part ( A ) of the side surface of the roller ( 3 ) having the form of a rectangular smooth field without any grooves ( 4 ) having the width equal to the width of the transversal strip ( 6 ) of the bituminous ( 2 ) mass layer applied onto the felt ( 7 ) strip, and the surface of the rotating printing roller ( 3 ) over the liquid adhesive mass ( 2 ) level is in contact with the periodically removed comb-shaped scraper ( 8 ), the movement of which depends on the number of printing roller ( 3 ) rotations. |
