A method is provided for manufacturing an elastic core yarn in which a core comprises an elastic fiber and a continuous yarn arranged along the elastic fiber, and in which a covering yarn of such a natural material as flax, hemp, ramié, bamboo, jute, is helically wrapped about the core. A step of helically wrapping the core with the covering yarn is carried out in such a way that a number T of coils covering yarn is formed about a length unit of the elastic fiber larger than a predetermined minimum value depending on the linear mass density Nm of covering yarn, and that the covering yarn becomes twisted with a final twist direction “S” or “Z” that is opposite to an initial twist direction “Z” or “S”, respectively. The step of wrapping is performed in a wrapping space enclosed within a container.

A method is provided for manufacturing an elastic core yarn in which a core comprises an elastic fiber and a continuous yarn arranged along the elastic fiber, and in which a covering yarn of such a natural material as flax, hemp, ramié, bamboo, jute, is helically wrapped about the core. A step of helically wrapping the core with the covering yarn is carried out in such a way that a number T of coils covering yarn is formed about a length unit of the elastic fiber larger than a predetermined minimum value depending on the linear mass density Nm of covering yarn, and that the covering yarn becomes twisted with a final twist direction “S” or “Z” that is opposite to an initial twist direction “Z” or “S”, respectively. The step of wrapping is performed in a wrapping space enclosed within a container.

Disclosed are a method for preparing spun leather yarn using leather fiber, and spun leather yarn prepared according to the preparation method. The spun leather yarn prepared according to the preparation method enables the manufacture of fabrics, knitted goods, and lace goods, which have the character of leather, and thus can be effectively used for various fashion applications. In addition, the spun leather yarn can replace existing leather materials, which have been used in bags, athletic shoes, and the like, and thus is not affected by material supply in accordance with seasonal changes, and accordingly, the economic effect thereof is excellent. Moreover, the spun leather yarn has warmth retention and general flame retardancy, which are the properties of natural leather, and thus is of very high quality.

Disclosed are a method for preparing spun leather yarn using leather fiber, and spun leather yarn prepared according to the preparation method. The spun leather yarn prepared according to the preparation method enables the manufacture of fabrics, knitted goods, and lace goods, which have the character of leather, and thus can be effectively used for various fashion applications. In addition, the spun leather yarn can replace existing leather materials, which have been used in bags, athletic shoes, and the like, and thus is not affected by material supply in accordance with seasonal changes, and accordingly, the economic effect thereof is excellent. Moreover, the spun leather yarn has warmth retention and general flame retardancy, which are the properties of natural leather, and thus is of very high quality.

The invention addresses the problem of providing a knitted fabric and a textile product which have excellent water absorbency, quick-drying properties, and anti-see-through properties. As a means for resolution, a knitted fabric is obtained using a crimped fiber having a torque of 30 T/m or less. The density of the knitted fabric is not less than 60 courses/2.54 cm and not less than 45 wales/2.54 cm, and the thickness of the knitted fabric is 0.45 mm or less.

Methods and a device for the continuous manufacturing of artificial muscle actuator device fibers are disclosed. The method includes: threading an untwisted fiber along the axis of a tube and inside the tube that includes a heating means to raise the localized temperature of a cross-section of the tube to a predetermined temperature; providing a tension on the untwisted fiber; and twisting the untwisted fiber while the fiber is within the tube.

Processes are provided for the manufacture of color effect face yarns for use in tufted goods. These color effect yarns may exhibit unique color effects and contain a lower overall denier, thereby allowing the production of tufted goods with a greater than normal tuft density per unit area. Consequently, this can result in finer color effects and/or sharper definition of color effects in the tufted goods and expands the design possibilities for such products.

An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.

An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.

A method for producing a continuous filament from electrospun fibers includes providing a conducting collection surface that is an elongate three-dimensional surface. An attractive electric field gradient is formed between the collection surface and a source of electrically charged fibers. The collection surface is moved in a longitudinal direction relative to the source of electrically charged fibers. The fibers are collected on the collection surface so as to form a continuous filament.