Including Material Tension Adjusting Means Patents (Class 34/648)
  • Patent number: 7159334
    Abstract: A web coating machine for coating a web of material having first and second faces and a web travel path, the web coating machine including a tension zone in a portion of the web travel path, a fixed port structure over which the web travels, and a web positioning device including at least one gas flow port in the port structure capable of generating a vacuum that brings the first face of the web of material into contact with a portion of the port structure immediately surrounding one of more of the gas flow ports and reduces, retards or arrests longitudinal travel of the web of material through the web coating machine.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: January 9, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: William Blake Kolb, Don W. Hendrickson, Gary L. Huelsman
  • Patent number: 6723206
    Abstract: A method for threading a material web (3) through a processing plant (1). The material web (3) is divided, by a longitudinal cut, into a first narrow part (31) and a second broad part (32), the first part (31) being passed through the processing plant (1) while the second part (32) is separated. The width of the first part (31) is increased successively so that a growing share of the material web (3) is passed through the processing plant (1). Finally the entire width of the material web (3) is passed through the processing plant (1). The material web (3) is pulled through the processing plant (1) by a controllable force (tension). The magnitude of the controllable force is automatically adjusted to the width of the first part (31) of the material web (3), preferably in such manner that the magnitude of the force is selected proportional to the width of the first part (31).
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 20, 2004
    Assignee: Andritz Technology and Asset Management GmbH
    Inventors: Tommy Fransson, Evert Nilsson
  • Patent number: 6490811
    Abstract: A drying section for drying and controlling shrinkage of a moist fiber web in a paper making machine is provided, the web having a predetermined width and opposed transverse ends. Such a drying section comprises a plurality of drying section members configured to receive and forward the web in a machine direction. Each drying section member has opposed ends in a transverse direction. The drying section members further comprise a first drying section member and a second drying section member, with the second drying section member being separated from the first drying section member so as to define an intermediate zone therebetween. The drying section further comprises a primary belt set having a belt member wrapping about each of the opposed ends of each of the drying section members. Each belt member is configured in an endless loop and has a width less than half of the width of the web.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: December 10, 2002
    Assignee: Metso Paper Karlstad AB
    Inventor: Torbjörn Wahlström
  • Patent number: 5522161
    Abstract: In the case of an arrangement for the continuous heat setting of yarns, which are guided by means of transport belts into, and then out of, a heat setting chamber using superheated steam, at least one central mast is provided which is equipped with several circulating transport belts, arranged in polygonal form when viewed in cross section. At least one yarn is wound around the central mast and the transport belts in controlled loops. The transport belts are themselves subdivided into circulating belt sections, which are arranged consecutively at transfer points, the transfer points being arranged directly upstream and/or downstream of the heat setting chamber.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: June 4, 1996
    Assignee: Micheal Horauf Maschinenfabrik GmbH & Co. KG
    Inventor: Gerhard Vetter