Patent ID: 8172986
Filing Date: 2012-05-08
Classification: D21F,Y10S

Abstract:
1. A fabric belt unit for manufacturing corrugated board, the fabric belt unit comprising: a fabric belt defining a longitudinal direction and having first and second end portions joined to form a continuous belt; said fabric belt having an outer paper side facing toward the corrugated board transported thereon and an inner driven side for taking up drive forces applied thereto during operation of said fabric belt unit; a first one of said sides defining a first plane and a second one of said sides defining a second plane; said first and second end portions being thermally reduced in thickness from both of said sides relative to the remainder of said fabric belt; a first plurality of approximately U-shaped clamps being pressed into said first end portion and a second plurality of approximately U-shaped clamps being pressed into said second end portion for mutually connecting said end portions and coacting in said longitudinal direction to transmit force therebetween; the U-shaped clamps of each of said first and second pluralities being spaced at a spacing (a) one next to the other; each one of said U-shaped clamps having first and second legs and each of said legs having free bent-over end sections pressed into the fabric of the end section corresponding to said one U-shaped clamp; said first and second end portions with said respective first and second pluralities of pressed-in clamps each defining a top surface plane at a first distance (u) below said first plane; said first and second end portions with said respective first and second pluralities of pressed-in clamps each defining a bottom surface plane at a second distance (v) above said second plane; said first distance (u) being greater than said second distance (v); the fabric of said fabric belt being configured to be looser on said first side than the fabric on said second side; the material of a portion of the fibers of the fabric on said first side having a lower melt point than the material of the other fibers on said first side; and, the fabric on said first side comprising fibers which have a lower melt point than the other fibers of the fabric on said second side.