Patent ID: 6012501
Filing Date: 2000-01-11
Classification: B31F,Y10T

Abstract:
A single facer apparatus for forming a single face corrugated web comprising:a large diameter fluted corrugating roll;a small diameter fluted corrugating roll positioned to interengage the large diameter roll to create therewith a corrugating nip; anda plurality of backing roll arrangements in rotatable engagement with the small diameter corrugating roll, each backing roll arrangement including a pair of idler rolls mounted on support assembly and a pressure belt entrained between the pair of idler rolls, and said backing roll arrangements positioned to apply a force along substantially the full axial length of the small diameter corrugating roll; and,an actuator operatively connected to each roll pair support assembly to impose a variable backing force on the backing roll arrangement to force the pressure belt into contact with the small diameter corrugating roll.