Polymeric Non-Woven Mat
AssigneeAmerica Plastics, LLC
InventorsPatricio Javier De Vincente Mingo, Alejandro Alban
Life of this patent
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Abstract
A non-woven polymeric mat for protecting pipelines, the mat including a plurality of extruded, strands derived from a polymer blend of pelletized polyvinyl chloride (PVC) resin having a k-value ranging from 60 to 70 and an olefin-based thermoplastic elastomer (TPE), wherein the amount of TPE in the polymer blend ranges from about 2.8 parts by weight to about 4 parts by weight per 100 parts by weight of PVC resin in the polymer blend and is sufficient to improve the modulus and tensile strength of the mat, and further wherein the polymer blend is devoid of a nucleating agent and is devoid of a cross-linking agent, and wherein the extruded strands have a specific gravity ranging from about 1.25 to about 1.4.
Claims15
A non-woven polymeric mat for protecting pipelines, the mat comprising a plurality of extruded, strands derived from a polymer blend of a pelletized polyvinyl chloride (PVC) resin having a k-value ranging from 60 to 70 and an olefin-based thermoplastic elastomer (TPE), wherein the amount of TPE in the polymer blend ranges from about 2.8 parts by weight to about 4 parts by weight per 100 parts by weight of PVC resin in the polymer blend and is sufficient to improve the modulus and tensile strength of the mat, and further wherein the polymer blend is devoid of a nucleating agent and devoid of a cross-linking agent, and wherein the extruded strands have a specific gravity ranging from about 1.25 to about 1.4.
A method for making a polymeric non-woven mat, comprising preparing a polymer blend comprising pelletized polyvinyl chloride (PVC) resin having a k-value ranging from 60 to 70, a thermoplastic olefin elastomer (TPE) in an amount ranging from about 2.8 to about 4.0 parts by weight per 100 parts by weight of PVC resin in the polymer blend, and a plasticizer, wherein the polymer blend is devoid of a cross-linking agent, further comprising the step of extruding strands derived from the polymer blend through a die onto a rotating casting cylinder to produce the polymeric non-woven mat derived from extruded polymer blend wherein the strands of the polymeric non-woven mat have a specific gravity ranging from about 1.25 to about 1.4.
Dependencies are inferred from the claim text.