Formaldehyde-free mineral fibre insulation product
AssigneeKnauf Insulation, Inc.
InventorsRoger Jackson, Tony Aindow, George Baybutt
Life of this patent
Estimating the term…
Abstract
A packaged mineral fibre insulating material has: a) a Recovered Thickness of at least 95% nominal thickness; and b) an Ordinary Parting Strength of at least 95 g/g; and c) a Weathered Parting Strength of at least 75 g/g the material comprising mineral fibres and an organic, formaldehyde free binder in a quantity of less than 15% by weight, preferably less than 10% by weight, said binder having been applied to the fibres of the insulating material in liquid form at pH of greater than 5.
Claims20
A mineral fiber insulating material comprising mineral fibers and less than about 15% by weight of an organic binder, wherein
- a) the organic binder is a formaldehyde free product of curing an aqueous solution having a pH of greater than 5 when applied to the mineral fibers,
- b) the mineral fiber insulating material has a recovered thickness of at least about 95% as determined according to Annex A of British standard BS EN 823:
- 1995,
- c) the mineral fiber insulating material having an ordinary parting strength of at least about 95 g/g,
- d) the mineral fiber insulating material having a weathered parting strength of at least about 75 g/g, and
- e) the mineral fiber insulating material is packaged.
A mineral fiber insulating material having a density in a range of 100 to 200 kg/m3 comprising mineral fibers and less than 15% by weight an organic, formaldehyde free binder, wherein
- a) the mineral fiber insulating material has an ordinary compression strength of at least about 60 kPa,
- b) the mineral fiber insulating material has a weathered compression strength of at least about 25 kPa,
- c) the organic, formaldehyde free binder is a product of drying and curing an aqueous solution with a pH of greater than about 5 when applied to the mineral fibers, and
- d) the mineral fiber insulating material is packaged.
A method of manufacturing a packaged mineral fibre insulating material selected from the group consisting of:
- (i) material having
- a) a Recovered Thickness of at least 95%;
- and
- b) an Ordinary Parting Strength of at least 95 g/g;
- and
- c) a Weathered Parting Strength of at least 75 g/g;
- and
- (ii) material having
- a) an Ordinary Compression Strength of at least 60 kPa;
- and
- b) a Weathered Compression Strength of at least 25 kPa;
- comprising the steps of
- i) applying an organic, formaldehyde free binder in aqueous solution to the mineral fibres at a pH of greater than 5 and
- ii) curing the product so that it contains a quantity of less than 15% by weight of binder and
- iii) packaging the insulating material.
Dependencies are inferred from the claim text.