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US 5,182,162 AGranted
Self-bonded nonwoven web and net-like web composites
AssigneeAmoco Corporation
InventorFrank G. Andrusko
Life of this patent
Estimating the term…
Abstract
A self-bonded nonwoven web and thermoplastic net-like web composite comprising at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web and at least one layer of a thermoplastic net-like web for producing stable fabric useful for carpet backing and packaging applications.
Claims20
A self-bonded nonwoven web and thermoplastic net-like web composite comprising,
- at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web comprising a plurality of substantially randomly disposed, substantially continuous thermoplastic filaments wherein said web has a Basis Weight Uniformity Index of 1.0.+-.0.05 determined from average basis weights having standard deviations of less than 10%, adhered to
- at least one layer of a thermoplastic net-like web comprising a net-like structure of a multiplicity of aligned thermoplastic elements wherein a first segment of elements is aligned at about a 45.degree. to about 90.degree. angle to a second segment of elements thereby defining a border for multiple void areas of the net-like structure.
A self-bonded nonwoven web and thermoplastic net-like web composite comprising,
- at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web comprising a plurality of substantially randomly disposed, substantially continuous thermoplastic filaments comprising a random copolymer of propylene and ethylene wherein said web has a Basis Weight Uniformity Index of 1.5.+-.0.05 determined from average basis weights having standard deviations of less than 10%, adhered to
- at least one layer of a thermoplastic net-like web comprising a cross-laminated net-like web comprising a thermoplastic selected from the group consisting of polyolefins, combinations of polyolefins and polyesters.
A self-bonded nonwoven web and cross-laminated thermoplastic net-like web composite having a basis weight in the range of about 0.2 oz/yd.sup.2 or greater comprising,
- at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web having a basis weight of about 0.1 oz/yd.sup.2 or greater and a Basis Weight Uniformity Index of 1.0.+-.0.05 determined from average basis weights having standard deviations of less than 10% and comprising a plurality of substantially randomly disposed, substantially continuous thermoplastic filaments wherein said thermoplastic filaments have deniers in the range of about 0.5 to about 20 and comprise a thermoplastic selected from the group consisting of polypropylene, a random copolymer of propylene and ethylene and a blend of polypropylene and polybutene or linear low density polyethylene wherein said web is adhered to
- at least one layer of a cross-laminated thermoplastic net-like web having a basis weight of about 0.1 oz/yd.sup.2 or greater comprising a thermoplastic selected from the group consisting of polyolefins, combinations of polyolefins, and polyesters.
A self-bonded nonwoven web and cross-laminated thermoplastic net-like web composite having a basis weight of about 0.4 oz/yd.sup.2 or greater comprising,
- at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web having a basis weight of about 0.1 oz/yd.sup.2 or greater and a Basis Weight Uniformity Index of 1.0.+-.0.05 determined from average basis weights having standard deviations of less than 10% comprising a plurality of substantially randomly disposed, substantially continuous thermoplastic filaments wherein the filaments comprise a thermoplastic selected from the group consisting of polypropylene, a random copolymer of propylene and ethylene, and a blend of polypropylene and polybutene or linear low density polyethylene,
- a layer of a cross-laminated thermoplastic net-like web having a basis weight in the range of about 0.1 oz/yd.sup.2 or greater comprising a thermoplastic selected from the group consisting of polyolefins, combinations of polyolefins and polyesters, and
- a layer of a polymeric coating composition having a basis weight in the range of about 0.2 oz/yd.sup.2 or greater comprising a composition selected from the group consisting of ethylene-methyl acrylate copolymer, ethylene-vinyl acetate copolymer and linear low density polyethylene located between and integrally adhered to said self-bonded nonwoven web layer and said cross-laminated thermoplastic net-like web layer.
Dependencies are inferred from the claim text.