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US 10,203,282 B2Granted
Mineral wool product
AssigneeKnauf Insulation, Inc.
InventorsMarkus Mente, Stefan Kossler
Life of this patent
Estimating the term…
Abstract
The invention relates to a mineral wool product comprising mineral fibers that is marked with an UV or IR active substance and can therefore be identified under exposure to suitable radiation.
Claims23
A method of identifying a mineral wool insulation product comprising mineral fibers comprising:
- providing the mineral wool insulation product with a marking provided by an active indicator substance which is configured to emit visible light by a method consisting of irradiating the active indicator with UV or IR radiation, wherein the indicator substance is present in an amount that is less than 1% by weight based on the total weight of the mineral wool insulation product, wherein the active indicator substance is selected from the group consisting of UV indicator substances that are visible to the naked eye under a source of UV radiation and IR indicator substances that are visible to the naked eye under a source of IR radiation, and wherein the marking is invisible under normal ambient conditions;
- subjecting the product to a level of incident UV or IR radiation which reveals the marking;
- and
- identifying with the naked eye the mineral wool insulation product on the basis of the revealed marking.
1 more element
A method of identifying a mineral wool insulation product comprising mineral fibers comprising:
- providing the mineral wool insulation product with a marking provided by an active indicator substance configured to be visible under the naked eye by a method consisting of subjecting the active indicator substance to a source of UV radiation, wherein the active indicator substance comprises a UV indicator substance which converts incident UV radiation of a specific wavelength in to visible light with a longer wavelength and which is visible to the naked eye under a source of UV radiation;
- subjecting the product to a level of incident UV radiation which reveals the marking;
- and
- identifying with the naked eye the mineral wool insulation product on the basis of the revealed marking.
1 more element
A method of identifying a mineral wool insulation product comprising mineral fibres comprising:
- providing the mineral wool insulation product with a marking provided by an active indicator substance which emits visible light by a method consisting of irradiating with UV or IR radiation, wherein the indicator substance is present in an amount that is less than 1% by weight based on the total weight of the mineral wool insulation product, wherein the active indicator substance is selected from the group consisting of:
- a) UV indicator substances that are visible to the naked eye under a source of UV radiation and selected from the group consisting of flavonic acid, 4,4′-distyryl-biphenyls, stilbenes, pyrazolines, coumarin, dihydroquinolines, naphthalene acid imides, benzoaxazole, benzioxazole compounds, riboflavin, quinine, chlorogenic acid, quinoline yellow, and derivatives thereof;
- and
- b) IR indicator substances that are visible to the naked eye under a source of IR radiation and selected from the group consisting of doped strontium sulfide, doped zinc sulphide, yttrium compounds, ytterbium compounds and erbium compounds;
- and
- wherein the marking is invisible under normal ambient conditions;
- subjecting the product to a level of incident UV or IR radiation which reveals the marking;
- and
- identifying with the naked eye the mineral wool insulation product on the basis of the revealed marking.
6 more elements
Dependencies are inferred from the claim text.