Patent ID: 6095963
Filing Date: 2000-08-01
Classification: B31F

Abstract:
Apparatus for making corrugated paperboard in which two corrugated mediums are bonded together at their flute tips without any intermediate liner which apparatus includes(a) a first frame for mounting two pairs of corrugating rolls(b) a first corrugating roll fixedly mounted on said first frame(c) a second corrugating roll mounted on said first frame and being movable toward and away from said first corrugating roll(d) a second frame mounted on said first frame on a side of said first corrugating roll remote from said second corrugating roll, said second frame being movable toward and away from said first corrugating roll(e) a third corrugating roll fixedly mounted on said second frame(f) a fourth corrugating roll mounted on said second frame on a side of said third roll remote from said first roll, said fourth roll being movable toward and away from said third roll(g) a locking mechanism for locking the second frame on the first frame so that a fixed gap is created between the first and third corrugating rolls(h) the mounting of the second frame on said first frame reducing twisting and movement of said first and third rolls relative to each other.