Patent ID: 6155319
Filing Date: 2000-12-05
Classification: B31F,Y10T

Abstract:
A unit for joining a flat liner paper sheet to a corrugated paper sheet in corrugated board manufacturing machines, comprising:a) at least one toothed or corrugated roll (1), which is mounted in such a way as to rotate about its axis and which drags a corrugated paper sheet (C1, C0) in a position partly adhering to its perimetral surface,b) means (5, 6) for feeding and pressing at least one flat paper sheet (C2), which interacts with the toothed or corrugated roll (1) in laying the flat paper sheet (C2) over the corrugated paper sheet (C0), conveyed by said toothed or corrugated roll (1);c) gluing means (4), arranged in such a way as to apply adhesive to one of the sheets (C0) at least before the two sheets (C2, C0) are joined and compressed together;characterized in that the means for feeding/pressing the flat paper sheet (C2) against the corrugated paper sheet (C0) on the toothed or corrugated roll (1) consists of a roll (6) mounted in such a way as to rotate about its axis and parallel to the toothed or corrugated roll (1), as well as tangent thereto, which roll (6) is pushed against the toothed or corrugated roll (1) and is made, at least at its periphery (106), of a layer of natural or synthetic fibers, or of compacted blends thereof, having a certain compressibility and/or deformability.