Patents Assigned to Paroc Oy AB
  • Method for the production of a mineral fibre product
    Patent number: 7226522
    Abstract: The present invention is directed to method of bonding mineral fibers in a mineral fiber material, according to which an acid is applied to the mineral fiber material in an amount sufficient to dissolve mineral material from the fiber to form a silica containing binder on the mineral fiber, and curing the mineral fiber material to bond the fibers.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: June 5, 2007
    Assignee: Paroc Oy AB
    Inventors: Michael Perander, Jean Le Bell
  • Mineral fibre
    Patent number: 6218322
    Abstract: The invention concerns a mineral fibre having the following composition in % by weight: SiO2 50-60, A12O3 1-6, MgO 16-22, CaO 12-18, Na2O+K2O 0-3, Fe2 O31-8, P2O5 1-6, other 0-3, whereby the weight ratio CaO/MgO<1 and the sum CaO+MgO=30-38% by weight.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: April 17, 2001
    Assignee: Partex Paroc Oy AB
    Inventors: Michael Perander, Jan Hakala
  • Mineral fibre composition
    Patent number: 5843854
    Abstract: A mineral fibre composition which is soluble in biological fluids contains substantially45-65% by weight of SiO.sub.215-40% by weight of CaO0-20% by weight of MgO0-6% by weight of Na.sub.2 O+K.sub.2 Oand in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P.sub.2 O.sub.5 to the sum of Al.sub.2 O.sub.3 and iron oxide is circa 0.4 to 6.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 1, 1998
    Assignee: Partek Paroc OY AB
    Inventors: Kirsti Marjatta Karppinen, Michael Stig Folke Perander, Peter Arnold Henrik Solin, Antero Olavi Pehkonen, Seija Marketta Maine
  • Raw material briquette for mineral wool production and process for its preparation and its use
    Patent number: 5472917
    Abstract: The invention concerns a raw material briquette for mineral wool production containing a mineral raw material as well as a binder therefor. The invention is characterized in that the briquette, as the binder, contains slag which has been activated with an alkaline agent, such as with an alkalimetal compound. The invention also concerns a process for the preparation of the briquette as well as a process for the preparation of mineral fibres using the briquette according to the invention.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: December 5, 1995
    Assignee: Paroc Oy AB
    Inventors: Bob Lars O. Talling, Mariana Sarudis
  • Method for regulating a weight related parameter of a mineral fibre felt
    Patent number: 5324338
    Abstract: Method for regulating a weight related parameter in a mineral fibre felt, in mineral fibre production. The speed of the fibre felt is regulated by a feed-forward connected regulator (R.sub.1) based on the power consumption of the fiberizing unit (2). The regulator (R.sub.1) is corrected with a feed-back connected regulator (R.sub.2) wherein the measured signal is a weight related parameter measured at a location in the beginning of the felt forming line. The regulator (R.sub.2) in turn is corrected by a third feed-back connected regulator (R.sub.3) wherein the measured signal is a weight related parameter measured at a point at the end of the felt forming line.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: June 28, 1994
    Assignee: PAROC Oy Ab
    Inventor: Kjell E. Holmstrom