Mineral wool insulation
AssigneesKnauf Insulation SPRL, Knauf Insulation, Inc.
InventorsCarl HAMPSON, Gert MUELLER, Charles APPLEY
Life of this patent
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Abstract
A method of manufacturing a mineral fibre thermal insulation product comprises the sequential steps of: Forming mineral fibres from a molten mineral mixture; Spraying a substantially formaldehyde free binder solution on to the mineral fibres, the binder solution comprising: a reducing sugar, an acid precursor derivable from an inorganic salt and a source of nitrogen; Collecting the mineral fibres to which the binder solution has been applied to form a batt of mineral fibres; and Curing the batt comprising the mineral fibres and the binder which is in contact with the mineral fibres by passing the batt through a curing oven so as to provide a batt of mineral fibres held together by a substantially water insoluble cured binder.
Claims20
A method of manufacturing a mineral fibre thermal insulation product comprising the sequential steps of:
- forming mineral fibres from a molten mineral mixture;
- spraying a substantially formaldehyde free binder solution on to the mineral fibres, the binder solution comprising:
- a reducing sugar, an acid precursor derivable from an inorganic salt and a source of nitrogen;
- collecting the mineral fibres to which the binder solution has been applied to form a batt of mineral fibres;
- and
- curing the batt comprising the mineral fibres and the binder by passing the batt through a curing oven so as to provide a batt of mineral fibres held together by a substantially water insoluble cured binder.
-44. (canceled)
A mineral fibre thermal insulation product comprising mineral fibres and a binder, in which the binder is substantially formaldehyde free and comprises a reducing sugar;
- an acid precursor derivable from an inorganic salt and a source of nitrogen.
A mineral fibre thermal insulation product comprising mineral fibres and a binder, in which the binder is substantially formaldehyde free and comprises Maillard reaction products and in which the insulation product comprises more than 500 mg/kg of species selected from the group consisting of sulphates, phosphates, nitrates and carbonates.
Dependencies are inferred from the claim text.