Patents Assigned to M & J Fibretech A/S
  • Patent number: 7278602
    Abstract: The invention provides a method and an apparatus for winding material. The apparatus includes first and second roll carriages that are each configured to support a roll shaft. At least one of the first and second roll carriages is configured to be rotated by a drive member. The apparatus also includes an engagement roller displaceable from a first engagement roller position where the traveling roller is free of a web to a second, different engagement roller position where the traveling roller is configured to engage the periphery of a roll of web material that is at least partially wound about the roll, a traveling roller displaceable from a first traveling roller position to a second traveling roller position and a cutter where the cutter is configured to cut through the web after the first roll carriage moves from a first roll carriage position to a second roll carriage position.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: October 9, 2007
    Assignee: M&J Fibretech A/S
    Inventors: Bengt Arne Andreasson, Birger Elmgaard Sørensen
  • Patent number: 7134859
    Abstract: A plant which serves to produce a nonwoven web of fibers out of a fibrous material, such a cellulose pulp. The plant comprises a hammer mill for defibrating the fibrous material and a forming head for forming a web of fibers on an endless forming wire, which, during operation, runs mainly horizontally, a first transport fan for transporting defibrated fiber to the forming head via a first air duct and a second transport fan to extract nits from the forming head via a second air duct. Furthermore, the plant comprises a separator, which is connected to the second air duct and arranged for separating the nits and the well-opened fiber, a third transport fan for returning the separated, well-opened fibers to the forming head, and a nits-opener for converting the separated nits into well-opened fiber. The separated nits are transported from the nits separator to the nits-opener by means of a fourth transport fan via a fourth air duct.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: November 14, 2006
    Assignee: M&J Fibretech A/S
    Inventor: Birger Elmgaard Sørensen
  • Patent number: 6883209
    Abstract: A plant for removing fines from fiber fluff. The plant includes a forming wire, a forming head which is placed above the forming wire and arranged for air-laying fiber fluff into a layer upon the forming wire, at least one channel for carrying, in a flow of air, fibers from a supply of fibers into the forming head, a suction box placed beneath the forming wire, at least one vacuum fan connected to the suction box for generating an air flow from the forming head, through the fluff, the forming wire, and the suction box to the at least one vacuum fan. The mesh count of the forming wire mainly allow only the fines contained in the fluff to pass through the forming wire. The troublesome and costly filtering of the water used in a hydroentangling process is advantageously eliminated when using fluff, which is freed from fines by means of the plant according to the invention. Air-laid webs produced of the fine-free fibers also have a high quality.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: April 26, 2005
    Assignee: M & J Fibretech A/S
    Inventor: Jens Ole Bröchner Andersen
  • Patent number: 6851164
    Abstract: A method and plant for producing an air-laid non-woven web of cellulose fibers or of cellulose fibers mixed with synthetic fibers that includes at least one air-laying section for depositing fiber fluff into a layer upon a forming wire, an overlying second wire for transferring the layer of fluff to a third wire having a mesh count small enough for preventing the fibers from penetrating into the wire, and at least one nozzle for directing a water jet towards the fluff on the third wire, thereby hydroentangling the fluff into a coherent web. By the method and plant according to the invention, it is possible to produce hydroentangled fiber webs which are less expensive and have better absorption properties than hitherto known. The webs can be produced with weights between about 20 and 2000 g/m2.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: February 8, 2005
    Assignee: M & J Fibretech A/S
    Inventor: Jens Ole Bröchner Andersen
  • Patent number: 6660215
    Abstract: This invention relates to a plant used to form an air-laid web of fibers and a powder on a running endless forming wire that is air-permeable and operates mainly horizontally, wherein the plant includes a suction unit positioned under the forming wire; a forming head with a perforated base positioned above the forming wire; at least one fiber feed duct using air flow from the fiber source to feed the fiber into the forming head; and at least one powder feed duct to feed powder by means of air flow from the powder source into the forming head.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: December 9, 2003
    Assignee: M&J Fibretech A/S
    Inventor: Birger Elmgaard Sørensen
  • Patent number: 6375773
    Abstract: A plant serves as a mean for production of a fibre web of synthetic fibres, such as plastic fibres and absorbent fibres, such as viscose and cellulose fibres. The plant includes a forming head preliminary to lay a homogeneously and smoothly distributed fibre layer on a net shaped wire. Furthermore the plant includes a hydro-entangling section with liquid nozzles with powerful liquid jets to treat the in the forming head formed fibre layer, which consists of both synthetic—and absorbent fibres. The plant also includes an oven subsequently to thermal bond the synthetic fibres with cross bonds in the affected areas. Finally the dried web is winded up in a roller. By the help of the plant according to the invention, by higher production speed than known previously a fibre web can be produced, which is far cheaper, and which has a better and more homogeneous structure than similar conventional fibre webs.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: April 23, 2002
    Assignee: M&J Fibretech A/S
    Inventor: Jens Ole Bröchner Andersen
  • Patent number: 6363580
    Abstract: A fiber distributor for forming an air-laid fiber web on a running endless forming wire which, during operation, in principle is horizontal. The fiber distributor includes a suction unit positioned under the forming wire, a housing positioned above the forming wire and having at least one combined fiber and air inlet, and a base having a number of flow openings, and a number of rotational wings positioned above this base. These wings distribute the fibers along the upper side of the base. The base is designed as a grid with grid bars which taper in a downwards direction. In the flow openings of the grid, a slip is advantageously formed which prevents the fibers from packing together and blocking the openings during operation. The fiber distributor is thus, at a continuous high capacity and is able to form an even and homogenous fiber layer on the forming wire.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: April 2, 2002
    Assignee: M & J Fibretech A/S
    Inventors: Birger Elmgaard Sørensen, Jens Ole Bröchner
  • Patent number: 6141833
    Abstract: The invention relates to a plant for producing a non-woven, web-formed fiber product. The plant comprises a first forming wire with an inlet and outlet end and an upper part which, at the inlet end takes up a carded or air-laid layer of fiber and transports it to the outlet end. The plant also includes a roller with an upper and lower roller part for compressing the fiber layer, and a second wire, positioned above the first wire, with a lower part which extends across the roller, and a suction box which is placed above the roller. In the section (a) between the outlet end of the first forming wire and roller, the fiber layer is firmly sucked onto the under side of the lower part of the second wire via the suction box. The fiber layer is thus stabilized so that the plant can, at a considerably faster production speed than corresponding conventional systems, produce a non-woven, web-formed fiber product of high quality with an evenly distributed fiber density and uniform surface.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: November 7, 2000
    Assignee: M&J Fibretech A/S
    Inventor: Birger Elmgaard S.o slashed.rensen