Method for making improved sealability polyolefin fibers, the fibers made thereby and non-woven textile materials including the fibers
OwnerRosaldo Fareinventor
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Abstract
A method for making improved sealability polyolefin fibers comprising extruding a polyolefin (2) and at least one polyolefin copolymer (4) having a melting temperature less than that of the melting temperature of the polyolefin to form fibers (9) having outer surfaces wherein at least part of the outer surfaces is comprised of the low-melting polymer and which have high sealability properties.
Claims25
A method for making an improved sealability polyolefin fiber comprising extruding a polyolefin and at least one low-melting polyolefin copolymer having a melting temperature of about 140-150° C., to form a polyolefin fiber wherein the polyolefin fiber has one or more outer surfaces comprising the low-melting polyolefin copolymer, and wherein the polyolefin fiber is in a form of a filament or a cut fiber having a cut length of at least 38 mm, and wherein the polyolefin fiber has a count of 1 to 70 dtex.
An improved sealability polyolefin fiber having an outer surface, wherein the polyolefin fiber is in the form of a filament or a cut fiber having a cut length of at least 38 mm and wherein the polyolefin fiber has a count of 1 to 70 dtex and wherein the polyolefin fiber has a heterogeneous structure comprising polyolefin and at least one low-melting polyolefin copolymer wherein the low-melting polyolefin copolymer has a melting temperature of about 140-150° C. and wherein the low-melting polyolefin copolymer comprises at least a portion of the outer surface of the polyolefin fiber.
A non-woven textile material comprising a web wherein the web is comprised of polyolefin fiber in a form of a filament or a cut fiber having a cut length of at least 38 mm and wherein the polyolefin fiber has a count of 1 to 70 dtex and wherein the polyolefin fiber has an outer surface and a heterogeneous structure comprising polyolefin and at least one polyolefin copolymer having a melting temperature of about 140 -150° C. and wherein the low-melting polyolefin copolymer comprises at least a portion of the outer surface of the polyolefin fiber.
A method of using an improved sealability polyolefin fiber having an outer surface wherein the polyolefin fiber is in the form of a filament or a cut fiber having a cut length of at least 38 mm and wherein the polyolefin fiber has a count of 1 to 70 dtex and wherein the polyolefin fiber has a heterogeneous structure comprising polyolefin and at least one low-melting polyolefin copolymer wherein the low-melting polyolefin copolymer has a melting temperature of about 140-150° C. and wherein the low-melting polyolefin copolymer comprises at least a portion of the outer surface of the polyolefin fiber, the method comprises incorporating the polyolefin fiber into a non-woven textile material.
Dependencies are inferred from the claim text.