Abstract: A method of forming a cured mineral fiber product which includes at least a top layer having mineral fibers and a base layer having mineral fibers. The method includes the steps of providing the top layer web including uncured mineral wool, providing the base layer web including cured mineral wool, joining the uncured top layer web and the cured base layer web to form an assembled laminate, and curing the top layer web in a curing oven by transporting the assembled laminate into a curing oven having an upper conveyor and a lower conveyor for curing the assembled laminate, the assembled laminate being positioned between the upper and lower conveyors. The uncured top layer web is compressed by at least 50% as it enters into the curing oven.

Abstract: The invention relates to a thermal insulating element comprising an insulating layer having a first face and a second face, said insulating layer comprising a coherent man-made vitreous fibre-containing insulating material and at least one reinforcing element extending substantially from the first face to the second face of the insulating layer, wherein the reinforcing element comprises a polymeric foam composite material, the composite material comprising a polymeric foam and man-made vitreous fibres produced with a cascade spinner or a spinning cup, wherein at least 50% by weight of the man-made vitreous fibres present in the polymeric foam composite material have a length less than 100 micrometers.

Abstract: The present invention concerns a method of forming a cured mineral fibre product comprising at least a top layer comprising mineral fibres and a base layer comprising mineral fibres, said method comprising the steps of providing the top layer web comprising uncured mineral wool; providing the base layer web comprising cured mineral wool; joining the uncured top layer web and the cured base layer web to form an assembled laminate; curing the top layer web in a curing oven by transporting the assembled laminate into a curing oven comprising an upper conveyor and a lower conveyor for curing the assembled laminate, said assembled laminate being positioned between said upper and lower conveyors; wherein the uncured top layer web is compressed by at least 50% upon entry into the curing oven.

Abstract: The invention provides a foamable composition comprising a foam pre-cursor and man-made vitreous fibres produced with a cascade spinner or a spinning cup, wherein at least 50% by weight of the man-made vitreous fibres have a length of less than 100 micrometres.