Patents Assigned to Rockwool Lapinus B.V.
  • Patent number: 6070382
    Abstract: A wall with enhanced fire resistance and thermal insulation is formed from first and second skins manufactured substantially from plate material, wherein insulating material manufactured from mineral wool is arranged between the skins, wherein the first skin is provided with noses arranged at regular distances and facing toward the inside of the wall, pointed connections are arranged between the noses and the second skin and a material strip manufactured from insulating material and dimensioned to absorb pressure forces is placed between the noses and the second skins.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: June 6, 2000
    Assignee: Rockwool Lapinus B.V.
    Inventor: Antonius Marinus Ettema
  • Patent number: 5919528
    Abstract: The invention relates to a method for manufacturing a product on a basis of mineral wool, including the steps of: i) preparing a phenol-formaldehyde resin, ammonia and a sugar preparation containing aqueous preparation; ii) applying the preparation to the mineral wool; and iii) curing the mineral wool with forming of the product, and to a kit for preparing the mineral wool product, including a container holding the resin preparation and a container holding the sugar preparation.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: July 6, 1999
    Assignee: Rockwool Lapinus B.V.
    Inventors: Mathijs Johannus Anthonius Maria Huijs, Jean Marie Wilhelmus Cuypers, Thor Husemoen
  • Patent number: 5218783
    Abstract: The invention relates to an agroblock comprising an inorganic soil type, such that the agroblock is substantially form-retaining at any moisture content and that at a suction pressure of pF 2 the moisture content amounts to at least 15% by volume. Preferably the agroblock comprises a homogeneous mixture of mineral wool and said inorganic soil type, wherein the quantity of mineral wool amounts to 0-90% by weight, and the amount of soil type amounts to 100-10% by weight.
    Type: Grant
    Filed: July 6, 1989
    Date of Patent: June 15, 1993
    Assignee: Rockwool Lapinus B.V.
    Inventors: Lucas E. M. Langezaal, Jacob F. de Groot
  • Patent number: 5133151
    Abstract: The invention relates to a method for the mineral wool culture of plants, whereby water and any fertilizers that may be comprised therein are supplied to, and if necessary discharged from, the mineral wool in which the plant grows, whereby in said mineral wool the suction pressure is adjusted using a capillary system connected for liquid communication with mineral wool, with which capillary system water and any required nutrients are actively supplied to and/or discharged from said mineral wool, in order to readjust the predetermined suction pressure; and to a device for the mineral wool culture of plants, comprising: mineral wool in which the plants can grow; means for supplying water and any fertilizers that may be comprised therein to said mineral wool; and means for discharging water and any fertilizers that may be comprised therein from said mineral wool, wherein a capillary system connected for liquid communication with said mineral wool, to which system are linked means for adjusting the suction pressu
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: July 28, 1992
    Assignee: Rockwool Lapinus B.V
    Inventor: Christiaan Blok
  • Patent number: 5009031
    Abstract: The invention relates to a grow-mat for cultivating plants, and to the production thereof, which grow-mat comprises a layer of mineral fibres cross-linked to one another by cured binding agent and treated with hydrophilic wetting agent, characterized in that in said grow-mat the principal direction of said mineral fibres extending in said layer extends in the longest dimension of said mat, in which preferably in both upright longitudinal surfaces of the grow-mat a curing oven profile is present, and/or the layer is a primary layer and at least two of said primary layers forming a secondary layer are present in a horizontal longitudinal plane of said grow-mat.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: April 23, 1991
    Assignee: Rockwool Lapinus B.V.
    Inventors: Albert W. Knop, Robert J. H. M. van Banning
  • Patent number: 4949503
    Abstract: The invention relates to a porous product for cultivating plants, comprising a matrix of mineral fibres which can be moistened with water, by material present in said porous product having a greater water retaining capacity than said mineral fibres which form said matrix and which can be moistened with water, of which preferably said material consists of flakes having a greater water retaining capacity and are accommodated therein over the whole height or only a portion of the height, and comprises mineral fibres that can be moistened with water, the density of which is at least 20, preferably 30, or more preferably 40 kg/m.sup.3 greater than the density of the mineral fibre matrix, and further to a method for manufacturing such a porous product.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: August 21, 1990
    Assignee: Rockwool Lapinus B.V.
    Inventor: Christiaan Blok