Impregnated fibrous laminates
AssigneeSonoco Products Company
InventorGarrett N. Smith
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Abstract
An improved fibrous laminate is formed by impregnating a paper-like material with a substantially anhydrous emulsifiable methylene diisocyanate (EMDI) and allowing the EMDI to cure at ambient or higher temperature. EMDI-impregnated laminates, such as tubes and cones show improved strength compared with prior art products and are especially resistant to water.
Claims8
A tube of cone or paper-like material comprising a plurality of adhesive bonded layers of paper-like material, at least a portion of which is impregnated with a substantially non-blocking, cured, substantially anhydrous emulsifiable methylene diisocyanate.
A laminate of paper-like material comprising a plurality of adhesive-bonded layers of paper-like material, at least a portion of which is impregnated with a substantially non-blocking, cured, substantially anhydrous emulsifiable methylene diisocyanate.
Dependencies are inferred from the claim text.