The present invention relates to a crimped polyester conductive filament, a manufacturing method and an application thereof. The crimped polyester conductive filament is obtained by subjecting a polyester conductive filament to a crimping deformation process, and has a crimp shrinkage of 15%-60% and a crimp stability of 40%-90%. The process of deformation processing is as follows: the conductive fiber protofilament is heated and plasticized by a deformed hot-box, cooled by a cooling plate, twisted and untwisted by a false twister, shaped, added with interlaced nodes, oiled, wound, inspected, and packaged. The crimped polyester conductive filament is beneficial to the subsequent blended weaving, or used alone for weaving, and can exhibit a soft human experience effect, and can be widely used in smart wear and other fields.

Techniques produce a crimped composite thread, in which multiple individual threads are extruded in each case in the form of a plurality of strand-shaped filaments, cooled, drawn by means of a drawing device and together crimped by means of a crimping device to form the composite thread. Before the multifilament individual threads are crimped, they are entangled separately in each case by means of an entangling unit of an entangling device. A position and/or orientation of at least one of the entangling units relative to the drawing device, the crimping device and/or a further one of the entangling units is changed during the production of the crimped composite thread.

The present invention relates to a crimped polyamide conductive filament, a manufacturing method and an application thereof. The crimped polyamide conductive filament is obtained by subjecting a conductive fiber with composite structure prepared by melt composite spinning process to a crimping deformation process, and has a crimp shrinkage of 15%-60% and a crimp stability of 40%-90%. The process of deformation processing is as follows: the conductive fiber protofilament is heated and plasticized by a deformed hot-box, cooled by a cooling plate, twisted and untwisted by a false twister, shaped, added with interlaced nodes, oiled, wound, inspected, and packaged. The crimped polyamide conductive filament is beneficial to the subsequent blended weaving, or used alone for weaving, and can exhibit a soft human experience effect, and can be widely used in intelligent sensing, smart wear and other fields.

A method for producing a textile product (I), (II), comprising at least two synthetic pile threads (P1), (P2) having a different pile height, so that a predetermined design is formed, in which the synthetic pile yarns (P1), (P2) are manufactured by extrusion from the same raw material, according to production processes which only differ from each other by a different setting of one or several process parameters of their respective extrusion processes, so that they have a different shrinking capability, and in which the textile product (I), (II) is subjected to a heat treatment which causes the pile yarns (P1), (P2) to shrink differently. Also such a method for producing synthetic textile yarns (P1), (P2) having a different shrinking capability.

The present invention relates to an acrylic fiber for artificial hair containing an acrylic copolymer. The dry-heat shrinkage ratio of the acrylic fiber after dry-heat treatment at 90 to 180 C. for 30 minutes is 30 to 70%, and the torsional rigidity thereof is 0.3 to 2.0 mg.Math.cm.sup.2. Also, one or more embodiments of the present invention relate to a crimped acrylic fiber for artificial hair containing an acrylic copolymer. In the crimped acrylic fiber, the number of crimps is 10 or more crimps per 10 cm, and the crimp height is 1.5 mm or more. In addition, in ten continuous crimps, at least two crimps differ in crimp width and at least two crimps differ in crimp height, while the crimps are formed in two or more different crimp directions.

The invention relates to a method and to a device for producing a crimped composite thread. The crimped composite thread includes a first polymer melt and a second polymer melt. The first polymer melt and the second polymer melt are arranged next to one another, in particular side-by-side, in portions in such a way that a composite thread is formed. The first polymer melt and the second polymer melt each have a different material property so that self-crimping of the composite thread is initiated by means of an active crimping initiation. Additionally, there is a system for producing a crimped composite thread from a bulk continuous filament yarn for carpet yarn using the method and the device.

A device for shaping at least one thread-like material (1), which is formed in a forming unit and is deposited on a transporting device (6) for the subsequent thermosetting process, wherein a retaining means (4, 14, 15, 22) and a drivable, curved depositing tube (5) are arranged one after the other in the thread transporting direction.

The improved multifilament structure is a low denier, heat treated multifilament structure that provides for advantageous mechanical properties, including fray resistance, low shrinkage, high tensile strength and low elongation.

Provided are: acrylic fibers having 2-7% boiling water shrinkage and formed by the side-by-side conjugation of a copolymer A, which contains 5-10 mass % of an unsaturated monomer that can form a copolymer with acrylonitrile units, and a copolymer B, which contains 2-5 mass % of unsaturated monomer units that can form a copolymer with acrylonitrile units and 0.2-1.5 mass % of sulfonic acid group-containing monomer units; a method for manufacturing said fibers; a spun yarn containing said fibers; and a knitted fabric obtained from said spun yarn. The single fiber fineness of the heat-treated acrylic fibers is 1.7-6.6 dtex, the bulkiness is at least 380 cm3/g, the percentage of crimp is at least 15%, and the product (DKSDKE) of the knot strength (cN/dtex) and the knot elongation (%) is 10-25. The acrylic fibers have excellent crimp characteristics and anti-pilling properties.

A method of creating a soft and lofty continuous fiber nonwoven web is provided. The method includes providing first and second, different molten polymers to a spinneret defining a plurality of orifices and flowing a fluid intermediate the spinneret and a moving porous member. The method includes using the fluid to draw the first and second molten polymers, in a direction toward the porous member, through at least some of the plurality of orifices to form a plurality of individual continuous fiber strands. The method includes depositing the continuous fiber strands onto the porous member at a first location to produce an intermediate continuous fiber nonwoven web, and varying, in at least two different zones, a vacuum force applied to the moving porous member and to the intermediate web downstream of the first location and without any heat applied.