Intumescent material
AssigneeTechnical Fibre Products Limited
InventorsDiane S. Knight, Simon Pinch, Nigel Julian Walker
Life of this patent
Estimating the term…
Abstract
A flexible intumescent material which comprises inorganic fibers and flexible organic fibers together forming a predominantly fibrous matrix, an elastomeric binder and an intumescent substance and which has been compressed at a moisture content of less than 5% by weight. The intumescent material may be produced by wet laying an aqueous slurry of inorganic fibers, flexible organic fibers, the intumescent substance and the elastomeric binder onto a water-pervious support, withdrawing water from the slurry to form a sheet, drying the sheet to a moisture content of less then 5% by weight and then compressing the sheet material.
Claims20
A flexible intumescent material which comprises inorganic fibres and flexible organic fibres together forming a predominantly fibrous matrix, an elastorneric binder and an intumescent substance and which has been compressed at a moisture content of less than 5% by weight.
A material as claimed in 1 wherein the organic fibres are polyester, nylon, aramid, acrylic, olefin or cellulosic fibres.
A method of producing a flexible intumescent material comprised of a predominantly fibrous matrix, the method comprising wet laying an aqueous slurry of inorganic fibres, flexible organic fibres, an intumescent substance and an elastomeric binder onto a water-pervious support, withdrawing water from the slurry to form a sheet, drying the sheet to a moisture content of less then 5% by weight and then compressing the sheet material.
A method of producing a flexible intumescent material comprising compressing a wet-laid sheet material having a moisture content of less than 5% by weight and being comprised of a matrix formed predominantly of fibres provided by inorganic fibres and flexible organic fibres, an elastomeric binder and an intumescent substance.
Dependencies are inferred from the claim text.