The present application discloses a polyamide 5X fiber, wherein raw materials for producing the polyamide 5X fiber comprise at least 1,5-pentane diamine and a long carbon chain diacid; or comprises a polyamide 5X obtained by the polymerization of 1,5-pentane diamine and a long carbon chain diacid as monomers. The 1,5-pentane diamine or the long carbon chain diacid are produced from bio-based raw materials by a fermentation process or an enzymatic conversion process; and the long carbon chain diacid is at least one of C6-20 aliphatic long carbon chain diacids. The long carbon chain diacid is at least one of C6-20 aliphatic long carbon chain diacids. The polyamide 5X fiber includes pre-oriented yarns, drawn textured yarns, fully drawn yarns, staple fibers, industrial yarns, continuous bulked filaments and monofilaments, preferably pre-oriented yarns, drawn textured yarns and/or fully drawn yarns. The raw materials used for producing the polyamide 5X resin are prepared by biological processes, and are green materials. The polyamide 5X fiber has good mechanical properties, dimensional stability, softness, quick-drying performance and dyeing properties.

A yarn making method includes a raw-material yarn; first rollers pulling the raw-material yarn; an entangling point generator subjecting the yarn to jet-forming of entangling points; a cleansing chamber cleansing the yarn that has generated the entangling points; a material chamber provided with a graphene-containing attachment material to be attached to the yarn that has generated the entangling points and has been cleansed; second rollers pulling the yarn that has past the entangling point generator, the cleansing chamber, and the material chamber; a heating chamber having the attachment material secured to the yarn by means of heat-setting; third rollers controlling a heating time of the yarn in the heating chamber; and fourth rollers winding and shaping the processing-completed yarn so as to have the graphene-containing attachment material long preserved in clothing.

The present invention relates to a spinning nozzle apparatus for manufacturing a high-strength fiber. The spinning nozzle apparatus for manufacturing a high-strength fiber according to the present invention is designed to optimize a heating method for the spinning region of a spinning nozzle in the melt spinning process. The heat transfer method is optimized by disposing the spinning nozzle holes of spinning nozzle commercially available on the outside of, directly under the pack body and heating the spinning nozzle holes with a heating body. In addition, an instantaneous heat treatment at high temperature is adopted to control the molecular entanglement structure in the melted polymer, which enhances the drawability of the thermoplastic resin and hence improves the mechanical properties such as strength and elongation.

The present disclosure relates to a method of preparing an anisotropic pitch for carbon fiber, and more particularly, to a method of preparing an anisotropic pitch of preparing a pitch having a low softening point by thermally polymerizing heavy oil or residue oil generated in an oil refining process, extracting only a mesogen component, and then heat-treating at a high temperature for a short time. The anisotropic pitch prepared in the present disclosure has advantages of exhibiting the anisotropic content of 100% and controlling the anisotropic content only a simple temperature control as desired and may be used as a precursor of a high value-added carbon material such as carbon fiber and an anode material for a lithium secondary battery.

A method includes forming a multi-pick yarn package through winding multiple oriented yarns onto a spool. The multiple oriented yarns serve as weft yarns forming adjacent substantially parallel yarns wound together, and each of the multiple oriented yarns is formed through drawing each of multiple synthetic yarns from a corresponding supply package. The method also includes simultaneously inserting the weft yarns in a single pick insertion event of a pick insertion apparatus of a loom apparatus in which the simultaneously inserted weft yarns are to be conveyed through a set of warp yarns to produce an incremental length of a woven textile fabric.

A yarn making method includes a raw-material yarn; first rollers pulling the raw-material yarn; an entangling point generator subjecting the yarn to jet-forming of entangling points; a cleansing chamber cleansing the yarn that has generated the entangling points; a material chamber provided with a graphene-containing attachment material to be attached to the yarn that has generated the entangling points and has been cleansed; second rollers pulling the yarn that has past the entangling point generator, the cleansing chamber, and the material chamber; a heating chamber having the attachment material secured to the yarn by means of heat-setting; third rollers controlling a heating time of the yarn in the heating chamber; and fourth rollers winding and shaping the processing-completed yarn so as to have the graphene-containing attachment material long preserved in clothing.

The present invention relates to a spinning nozzle apparatus for manufacturing a high-strength fiber.

The spinning nozzle apparatus for manufacturing a high-strength fiber according to the present invention is designed to optimize a heating method for the spinning region of a spinning nozzle in the melt spinning process. The heat transfer method is optimized by disposing the spinning nozzle holes of spinning nozzle commercially available on the outside of, directly under the pack body and heating the spinning nozzle holes with a heating body. In addition, an instantaneous heat treatment at high temperature is adopted to control the molecular entanglement structure in the melted polymer, which enhances the drawability of the thermoplastic resin and hence improves the mechanical properties such as strength and elongation.

A method includes forming a multi-pick yarn package through winding multiple oriented yarns onto a spool. The multiple oriented yarns serve as weft yarns forming adjacent substantially parallel yarns wound together, and each of the multiple oriented yarns is formed through drawing each of multiple synthetic yarns from a corresponding supply package. The method also includes simultaneously inserting the weft yarns in a single pick insertion event of a pick insertion apparatus of a loom apparatus in which the simultaneously inserted weft yarns are to be conveyed through a set of warp yarns to produce an incremental length of a woven textile fabric.

A polyamide multifilament has a single-filament fineness of 0.8 dtex to 7 dtex, a strength of 7.5 cN/dtex to 8.5 cN/dtex, and a knot strength of 6.0 cN/dtex to 7.5 cN/dtex. The polyamide multifilament may have a tensile strength at 15% elongation of 6.1 cN/dtex to 7.5 cN/dtex. The polyamide multifilament may have a total fineness of 20 dtex to 44 dtex.

Friction disc for a false-twist device, comprising an annular hub, on which it is possible to fix a circular race formed by a polyurethane (PU) layer and has a minimum wall thickness required for a secure interlocking fit, the hub having a circumferential support ring and a central hole, by which the friction disc is fixed on one of the shafts of the false-twist device. To ensure better dimensional and form stability over a long service life of the friction disc, the formed race fixed on the hub is ground according to a predefinable profile such that the flanks of the race have a predefinable width dimension following the grinding process, and/or in that the hub has, at a spacing from the support ring, a circumferential shoulder for abutment for the fixable PU layer, a cross-sectional width of the shoulder being smaller than a cross-sectional width of the support ring.