Laminate sheet material
AssigneeAnderson & Middleton Company
InventorsGary L. Earl, William A. Goodwin
Life of this patent
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Abstract
A composite laminate member includes outer layers of a polymer cellulose material sandwiched about a core of corrugated cardboard, the core of corrugated cardboard having flutes running in a plane parallel to the outer layers. An exemplary embodiment includes a filter medium separator for use in air filter constructions including a composite laminate member comprising outer layers of a polymer cellulose material and a fire retardant additive sandwiched about a core of corrugated cardboard.
Claims6
A composite laminate member comprising outer planar layers of delignified polymer cellulose material impregnated with a polyisocyanate compound and a fire retardant sandwiched about a core of corrugated cardboard, said core of corrugated cardboard including at least one layer of linerboard and layer of corrugated medium, said corrugated medium having flutes running in a plane parallel to said outer layers.
A filter medium separator for use in air filter constructions comprising a planar composite laminate member comprising outer layers of a delignified polymer cellulose material impregnated with a polyisocyanate compound and a fire retardant sandwiched about a core of corrugated cardboard, said core of corrugated cardboard including at least one layer of linerboard and layer of corrugated medium, said corrugated medium having flutes running in a plane parallel to said outer layers, said planar composite laminate member cut to include a plurality of finger-like projections extending from a common base portion.
Dependencies are inferred from the claim text.