Laminated fire resistant sheet material
AssigneeRexam Industries Corp.
InventorJoseph S. Sentendrey
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Abstract
An improved method of forming a laminated, fire resistant flexible sheet material, and the resulting laminate product are disclosed. The method comprises directing a second web of flexible material to overlie a first web of a flexible material in which the face of the first web is coated with an admixture of a substantially solvent-free adhesive and a fire retardant composition so that the adhesive in the admixture joins the webs together to form a fire retardant flexible laminate construction.
Claims10
A fire retardant laminate structure that is particularly suitable as moisture barrier thermal insulation in buildings, said laminate structure comprising:
- a first web of a flexible moisture barrier material;
- a second web of flexible material overlying said first web;
- and
- an admixture of an uncured substantially solvent-free adhesive and a fire retardant composition between said first and second webs for adhesively joining said webs when the adhesive in said adhesive admixture is cured and set;
- said admixture having a viscosity of between about 20,000 and 30,000 centipoise per second and being present in an amount of between about 5 and 15 pounds per ream;
- and
- said fire retardant composition being present in said admixture in a ratio by weight of between about 0.5:1 and 4:1, retardant:adhesive.
A fire retardant laminate structure that is particularly suitable as a moisture barrier thermal insulation in buildings, said laminate structure comprising:
- a first web of polyethylene for providing a flexible moisture barrier material;
- an second web of flexible metal foil overlying said first web;
- a reinforcing fabric scrim between said first and second webs;
- an admixture of an uncured substantially solvent-free adhesive and a fire retardant composition between said first and second webs for adhesively joining said webs and said scrim when the adhesive in said adhesive admixture is cured and set;
- said admixture having a viscosity of between about 20,000 and 30,000 centipoise per second and being present in a coat weight of between about 5 and 15 pounds per ream;
- and
- said fire retardant composition being present in said admixture in a ratio by weight of between about 0.5:1 and 4:1, retardant:adhesive.
Dependencies are inferred from the claim text.