초록 ▼

A method, system and apparatus is disclosed for drying a wet web quickly and efficiently on the surface of a steam heated drying cylinder in a continuous papermaking process. A steam-heated drying cylinder having an exterior surface is rotated under a drying hood adjacent the exterior surface of the

A method, system and apparatus is disclosed for drying a wet web quickly and efficiently on the surface of a steam heated drying cylinder in a continuous papermaking process. A steam-heated drying cylinder having an exterior surface is rotated under a drying hood adjacent the exterior surface of the drying cylinder. The hood comprises a drying zone of heated air, with nozzles adapted to supply hot air streams into the drying zone. A wet web is adhered to the drying cylinder and rotated through the drying zone of the hood. Then, hot air streams are directed from the nozzles upon the wet web. A hot air stream is provided from a nozzle at a lead angle that deviates from perpendicular between about 3 and about 30 degrees, in a lead direction towards the downstream end of the web drying process.

대표청구항 ▼

1. A web drying method, comprising:(a) providing a rotating drying cylinder having an exterior surface; (b) providing a drying hood adjacent the exterior surface of the drying cylinder, the hood comprising a drying zone of heated air, the hood further comprising nozzles adapted to supply hot air str

1. A web drying method, comprising:(a) providing a rotating drying cylinder having an exterior surface; (b) providing a drying hood adjacent the exterior surface of the drying cylinder, the hood comprising a drying zone of heated air, the hood further comprising nozzles adapted to supply hot air streams into the drying zone; (c) applying a wet web to the exterior surface of the cylinder; (d) rotating the wet web upon the exterior surface of the cylinder through the drying zone of the hood; and (e) directing hot air streams from the nozzles upon the wet web, at least one hot air stream being provided from a nozzle at a lead alpha angle that is deviated from perpendicular in the downstream machine direction between about 3 and about 30 degrees.