Ropes with Enhanced CBOS Fatigue Life

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1. 1. A rope comprising bundles of filaments , wherein each bundle comprises at least 70% by volume of liquid crystal polymer filaments , and wherein at least one bundle comprises liquid crystal polymer filaments of at least 10 denier per filament in size.2. The rope of claim 1 , wherein the liquid crystal polymer filaments comprise thermotropic liquid crystal polymer filaments.3. The rope of claim 2 , wherein the thermotropic liquid crystal polymer filaments comprise an aromatic polyester formed by the polycondensation of 4-hydroxybenzoic acid and 6-hydroxynaphthalene-2-carboxylic acid.4. The rope of claim 1 , wherein the liquid crystal polymer filaments comprise lyotropic liquid crystal polymer filaments.5. The rope of claim 4 , wherein the lyotropic liquid crystal polymer filaments comprise an aramid or a copolymer aramid.6. The rope of claim 1 , wherein the rope has a cross-sectional diameter of at least 6 mm.7. The rope of claim 1 , wherein the rope has a cross-sectional diameter of 6 mm to 200 mm.8. The rope of claim 1 , wherein each bundle comprises 15 to 5000 of the liquid crystal polymer filaments.9. The rope of claim 1 , wherein the rope is a twisted claim 1 , stranded claim 1 , or wire-lay rope.10. The rope of claim 1 , wherein the rope is a braided rope.11. The rope of claim 1 , wherein each bundle comprises at least 80% by volume of liquid crystal ...

BRAIDED CORD WITH CHANGING CROSS-SECTIONAL AREA

This application describes a braided cord containing a braided sheath and optionally a core surrounded by the braided sheath. The braided cord has changing cross-sectional area ranging from 0.0004 mmto 30 mmand contains one or more sections having a tapering angle ranging from 1° to 60° when observed in one direction along the cord axis. The change in the cross-sectional area of the cord can be achieved by changing the thickness of the braided sheath and/or changing the cross-sectional area of the core when the core is present. The thickness of the braided sheath can be adjusted by changing the size and/or twist level of one or more sheath strands, changing the pick count of the braided sheath, and/or using one or more shaped sheath strands. This application also describes a process of producing the braided cord with changing cross-sectional area. 2. The braided cord of claim 1 , wherein the cross-sectional area of the braided cord changes at a cross sectional area changing rate of larger than 1% per millimeter.3. The braided cord of claim 1 , whereinthe braided sheath has a pick count ranging from 6 to 3000 unit crossovers per liner meter of the braided cord, andthe filaments in the sheath strands have linear density ranging from 0.2 denier to 30 denier.4. The braided cord of claim 1 , wherein the braided sheath has changing thickness achieved by the braided sheath comprising one or more sheath strands having changing twist level.5. The braided cord of claim 1 , wherein the braided sheath has changing thickness achieved by the braided sheath having changing pick count.6. The braided cord of claim 1 , wherein the braided sheath has changing thickness achieved by the braided sheath comprising at least one shaped sheath strand claim 1 , which is an untwisted strand having a twist level of less than 1 turn per meter claim 1 , a cross-sectional aspect ratio of at least 3:1 claim 1 , and changing strand width.7. The braided cord of claim 1 , wherein the braided cord is a ...

SMALL DIAMETER FIBER BRAID WITH CENTRAL CORE MEMBER

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core. 1: A cord , comprising:a tubular braided sheath comprising:strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume; anda core within the central hollow portion of the tubular braided sheath;wherein:the strands each have a tensile strength of about 8 cN/dtex or more;when the cord is in a relaxed state, the tubular braided sheath has a substantially cylindrical shape having an outer diameter of from about 20 μm to about 5 mm and a volume of the central hollow portion, wherein the core does not completely fill the volume of the central hollow portion of the tubular braided sheath in the relaxed state; andwhen the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under longitudinal tension such that a volume of at least a part of the central hollow portion of the tubular braided sheath in the longitudinal tensioned state is less than the volume in the relaxed state;in the longitudinal tensioned state, the inner surface of the tubular braided sheath contacts and cinches a surface of the core such that ...

SMALL DIAMETER FIBER BRAID WITH CENTRAL CORE MEMBER

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core. 2. The cord according to claim 1 , wherein a pick count of the braid of the tubular braided sheath in the relaxed state is from 30 to 3000 filament unit crossovers per inch.3. The cord according to claim 1 , wherein the core is twisted at a twist level of from greater than 0 up to 1600 turns per meter (tpm).4. The cord according to claim 1 , wherein the core is a braided core.6. The cord according to claim 1 , wherein a pick count of the tubular braided sheath in a longitudinal tensioned state is reduced in comparison to a pick count in the relaxed state.7. The cord according to claim 1 , wherein the core occupies greater than about 95% of the volume of the central hollow portion of the tubular braided sheath in the relaxed state.8. The cord according to claim 1 , wherein each strand of the tubular braided sheath is individually a twisted or untwisted monofilament.9. The cord according to claim 1 , wherein each strand of the tubular braided sheath is individually or a twisted or untwisted multifilament.10. The cord according to claim 1 , wherein the tubular braided sheath is a combination of strands claim ...

Process for recovering high value polymer from carpet selvage waste

The present invention provides an inexpensive process which can be placed in the carpet mill to add value to carpet selvage waste by segregating the various materials used to manufacture the selvage waste. The process for segregating at least one component of a carpet selvage waste comprises the steps of: a. providing carpet selvage waste from carpet manufacturing comprised of tufts comprised of face fiber material, primary backing, an adhesive and optionally a secondary backing, b. identifying face fiber type used in the tufts in the carpet selvage, c. removing the face fiber from the carpet selvage such that the face fiber is essentially free of the primary backing and residual adhesive and d. segregating the removed face fiber from the remainder of the carpet selvage in a mechanical system which segregates fiber by fiber type to obtain a relatively pure stream of the face fiber. All removed, segregated components may be recycled and/or reused.

Braided jackets with low thickness

Method for producing core-sheath structures by shaping at least one filament bundle containing a plurality of filaments to form at least one shaped strand of filaments, and braiding a plurality of strands, including the at least one shaped strand of filaments, over a core to form the core-sheath structure containing a braided sheath of the strands surrounding the core, wherein the shaped strand of filaments is an untwisted strand having a twist level of less than 1 turn per meter, a cross-sectional aspect ratio of the shaped strand of filaments is at least 3:1, as measured in the braided sheath, a thickness of at least a portion of the braided sheath ranges from about 10 to about 200 pm, and the braided sheath comprises a synthetic fiber having a tensile strength of greater than 12 cN/dtex. Also disclosed herein is core-sheath structure formed by such method.

Small diameter fiber braid with central core member

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core.

Braided jackets with low thickness

Method for producing core-sheath structures by shaping at least one filament bundle containing a plurality of filaments to form at least one shaped strand of filaments, and braiding a plurality of strands, including the at least one shaped strand of filaments, over a core to form the core-sheath structure containing a braided sheath of the strands surrounding the core, wherein the shaped strand of filaments is an untwisted strand having a twist level of less than 1 turn per meter, a cross-sectional aspect ratio of the shaped strand of filaments is at least 3:1, as measured in the braided sheath, a thickness of at least a portion of the braided sheath ranges from about 10 to about 200 pm, and the braided sheath comprises a synthetic fiber having a tensile strength of greater than 12 cN/dtex. Also disclosed herein is core-sheath structure formed by such method.

Rope for heavy lifting applications

A large diameter rope (10) having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments (16) and liquid crystal polymer filaments (18) selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.

Small diameter fiber braid with central core member

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core.

Rope for heavy lifting applications

A large diameter rope (10) having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments (16) and liquid crystal polymer filaments (18) selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.

Rope

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.

Rope

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.

Braided cord with changing cross-sectional area and a method of making same

This application describes a braided cord (1) containing a braided sheath (2) and optionally a core (3) surrounded by the braided sheath (2). The braided cord (1) has changing cross-sectional area ranging from 0.0004 mm 2 to 30 mm 2 and contains one or more sections having a tapering angle (Θ) ranging from 1° to 60° when observed in one direction along the cord axis. The change in the cross-sectional area of the cord (1) can be achieved by changing the thickness of the braided sheath (2) and/or changing the cross-sectional area of the core (3) when the core is present. The thickness of the braided sheath (2) can be adjusted by changing the size and/or twist level of one or more sheath strands, changing the pick count of the braided sheath (2), and/or using one or more shaped sheath strands. This application also describes a process of producing the braided cord (1) with changing cross-sectional area.

Small diameter fiber braid with central core member

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core.

Small diameter fiber braid with central core member

Braided Jackets with Low Thickness

Disclosed herein are methods for producing core-sheath structures by shaping at least one filament bundle containing a plurality of filaments to form at least one shaped strand of filaments, and braiding a plurality of strands, including the at least one shaped strand of filaments, over a core to form the core-sheath structure containing a braided sheath of the strands surrounding the core, wherein the shaped strand of filaments is an untwisted strand having a twist level of less than 1 turn per meter, a cross-sectional aspect ratio of the shaped strand of filaments is at least 3:1, as measured in the braided sheath, a thickness of at least a portion of the braided sheath ranges from about 10 to about 200 μm, and the braided sheath comprises a synthetic fiber having a tensile strength of greater than 12 cN/dtex. Also disclosed herein are core-sheath structures formed by such methods.

Seil für schwere hebeanwendungen

Ropes with enhanced cbos fatigue life

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.

Small diameter fiber braid with central core member

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core.

Braided cord with changing cross-sectional area

This application describes a braided cord containing a braided sheath and optionally a core surrounded by the braided sheath. The braided cord has changing cross-sectional area ranging from 0.0004 mm 2 to 30 mm 2 and contains one or more sections having a tapering angle ranging from 1° to 60° when observed in one direction along the cord axis. The change in the cross-sectional area of the cord can be achieved by changing the thickness of the braided sheath and/or changing the cross-sectional area of the core when the core is present. The thickness of the braided sheath can be adjusted by changing the size and/or twist level of one or more sheath strands, changing the pick count of the braided sheath, and/or using one or more shaped sheath strands. This application also describes a process of producing the braided cord with changing cross-sectional area.

Ropes with enhanced CBOS fatigue life

Disclosed herein are ropes containing bundles of filaments, where each bundle includes at least 70% by volume of liquid crystal polymer filaments, and where at least one bundle includes liquid crystal polymer filaments of at least 10 denier per filament in size. Also disclosed herein are methods of pulling or lifting an object by applying tension to such a rope connected to the object, where the rope is arranged over a sheave or a non-rotating guide surface, and a ratio of a diameter of the sheave or an effective diameter of the non-rotating guide surface, D, to a diameter of the rope, d, is at least 20:1.

Small diameter fiber braid with central core member

A cord comprises a braided sheath of strands having an outer surface, an inner surface, and a central hollow portion defined by the inner surface and having a volume and a core within the central hollow portion of the tubular braided sheath, such that when the cord is in a relaxed state the tubular braided sheath has a cylindrical shape and a relaxed volume of the central hollow portion wherein the core does not fill the relaxed volume of the central hollow portion of the tubular braided sheath; when the cord is in a longitudinal tensioned state, the tubular braided sheath elongates under the longitudinal tension such that a tensioned volume of at least a part of the central hollow portion of the tubular braided sheath is less than the relaxed volume; and the inner surface of the tubular braided sheath of tensioned volume contacts and cinches a surface of the core.

Rope and method for pulling or lifting an object