Patent ID: 6042692
Filing Date: 2000-03-28
Classification: D21F

Abstract:
A paper machine for manufacturing a web of soft crepe paper, comprising a wet end having at least one forming wire for forming and supporting a web, and a drying section comprising a through drying machine having a housing with a chamber for drying air, a through-blow cylinder rotatably journalled in the housing and having a perforated shell for the drying air to blow through; a drying cylinder; a doctor blade for creping the web from said drying cylinder; and a perforated belt of wire type which runs in a loop around a plurality of rolls, around said through-blow cylinder and around a transfer roll forming a nip with the drying cylinder, said belt running in contact with the forming wire in a transition zone having transfer means for transferring the web from the forming wire to the belt in said transition zone, the web being carried on the belt through the through drying machine with one surface exposed to the drying air in said chamber, said belt and the web carried thereon being moved from the through drying machine to the drying cylinder in a run that is free from mechanical means which would compress the web, whereby in said run the surface of the web which is exposed to drying air faces away from the belt and remains free from contact with such mechanical means up to the drying cylinder, and wherein the through drying machine is located below and to the side of the drying cylinder so that an upper horizontal tangent of the through-blow cylinder is located below a lower horizontal tangent of the drying cylinder and so that the distance between two vertical lines intersecting the centra of the through-blow cylinder and the drying cylinder is about 0-1.2 times the combined length of the radii of said cylinders.