Abstract: The present invention is directed to a colloidal aqueous silicate dispersion containing silica and alumina, the molar ratio between silica and alumina being 2-12, as well as to a method for its preparation. Said method is characterized by dissolving a particulate mineral material, such as a mineral wool or fiber product containing silica and alumina in a molar ratio of 2-12 in an aqueous solution, nucleating and stabilizing the so obtained solution, and optionally adjusting the dry matter content of the dispersion so obtained. The said dispersion can also be made to gel. The invention is also directed to the use of the dispersion as a binder.
Abstract: The invention concerns a method for making a binder, especially for mineral wool products comprising the steps of dissolving a particulate mineral material having a glassy amnorphous structure in an aqueous solution, nucleating and stabilizing the so obtained solution to form a sol having the desired particle size, and optionally adjusting the dry matter content of the sol. The invention also concerns a method for the production of a mineral wool product using the said binder for binding the fibers.
Type:
Grant
Filed:
March 28, 2001
Date of Patent:
July 29, 2003
Assignee:
Paroc Group Oy AB
Inventors:
Michael Perander, Bob Talling, Jean Le Bell
Abstract: The invention relates to a method and an apparatus for joining surface layers and a core to form an element between two press platens, at least one of which is flexible and acted on by several power units that can be adjustable individually or in groups.
Type:
Grant
Filed:
March 30, 2001
Date of Patent:
July 15, 2003
Assignee:
Paroc Group Oy AB
Inventors:
Tarmo Willman, Lars-Henrik Heselius, Esko Brunila
Abstract: A mineral fiber composition which is soluble in biological fluids contains substantially
45-65% by weight of SiO2
15-40% by weight of CaO
0-20% by weight of MgO
0-6% by weight of Na2O+K2O
and in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P2O5 to the sum of Al2O3 and iron oxide is circa 0.4 to 6.
Type:
Grant
Filed:
October 27, 1997
Date of Patent:
March 19, 2002
Assignee:
Paroc Group Oy AB
Inventors:
Kirsti Marjatta Karppinen, Michael Stig Folke Perander, Peter Arnold Henrik Solin, Antero Olavi Pehkonen, Seija Marketta Maine