The present invention provides a crimped polyamide yarn to which it is possible, using fibers that include low water absorption polyamide, to impart a stretch property and pliability such that it is possible for the inherent stretch properties of the crimped yarn to be appropriately expressed in a woven or knit fabric. The crimped polyamide yarn of the present invention is a side-by-side composite yarn which includes at least 40 mass % of low water absorption polyamide having an average of water absorption ratio of 5% or less at a temperature of 30 C. and a relative humidity (RH) of 90%, and in which the low water absorption polyamide is at least one component. The yarn is false-twisted, and has a crimp elongation ratio of 25% or more.

An apparatus and method for splitting a high filament count carbon fiber tow into a set of tows with reduced filament counts. The apparatus is comprised of an electrolyte bath assembly and a splitting assembly comprised of at least one blade. The preferred embodiment of the blades being Polytetrafluoroethylene (PTFE). The splitting assembly being positioned within the electrolyte bath or adjacent to the exit of the electrolyte bath.

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.

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.

Provided is yarn for a cell culture scaffold. The yarn includes ply-twisted fiber strands, and to prevent density-dependent inhibition of cultured cells and increase a cell-contacting specific surface area, at least a part of the plurality of twisted fiber strands are untwisted such that an open space is formed between the fibers. A cell proliferation rate and cell viability may be increased by creating microenvironments suitable for migration, proliferation and differentiation of the cultured cells using the yarn. A large quantity of cells may be simultaneously cultured by creating a cell proliferation space as large as possible in a scaffold space having a limited cell proliferation space, and cell proliferation may be steadily maintained by preventing the inhibition of cell proliferation due to intercellular contact. The cells cultured may be cultured to have a shape/structure suitable for application to an in vitro experiment model or implantation into an animal body.

Provided is yarn for a cell culture scaffold. The yarn includes ply-twisted fiber strands, and to prevent density-dependent inhibition of cultured cells and increase a cell-contacting specific surface area, at least a part of the plurality of twisted fiber strands are untwisted such that an open space is formed between the fibers. A cell proliferation rate and cell viability may be increased by creating microenvironments suitable for migration, proliferation and differentiation of the cultured cells using the yarn. A large quantity of cells may be simultaneously cultured by creating a cell proliferation space as large as possible in a scaffold space having a limited cell proliferation space, and cell proliferation may be steadily maintained by preventing the inhibition of cell proliferation due to intercellular contact. The cells cultured may be cultured to have a shape/structure suitable for application to an in vitro experiment model or implantation into an animal body.

An apparatus for imparting false twist to a staple yarn comprising a yarn guide for guiding a staple yarn along a path and a false twist device comprising a convex surface for engagement with a staple yarn so as to impart a force to the staple yarn when the staple yarn engages with and traverses the convex surface of the false twist device, and wherein the relative positioning between the yarn guide and the convex surface of the false twist device is adjustable such that, when a staple yarn is engaged with the convex surface of the false twist device and extends between the yarn guide and the false twist device, the amount of contact between the staple yarn and the convex surface of the false twist device can be controlled.

A spiral yarn structure includes a core yarn comprising at least one core filament which is a filament fiber of 5-25D, a cover yarn comprising a plurality of cover fibers formed by stretching roves having a count ranging from 0.5 Ne to 2.0 Ne, wherein the cover fibers encloses the core yarn, and a wrap yarn wrapping the cover yarn at a twist factor K3, wherein the wrap yarn comprises at least one wrap filament which is a filament fiber of 5-25D, and the at least one wrap filament wraps an outer side of the cover yarn at an inclined angle to form the spiral yarn structure having a count ranging from 40 Ne to 80 Ne.

The invention relates to a friction disc (5) for a false twisting device (1), having a hub (6) comprising a mounting opening (7) for mounting a shaft (4) of the false twisting device (1), and with a race (8) that circumferentially surrounds the hub (6) when the friction disc (5) is used as intended, wherein the race (8) comprises a base body (9) having a uniform cross section about an axis of rotation (RA) of the friction disc (5) and the hub (6) comprises a mounting contour (10) adapted to correspond to the base body (9) of the race (8), and wherein the race (8) and the hub (6) are detachably connected to one another. According to the invention, the race (8) comprises at least one locking section (11) that increases the cross-section of the base body (9) and is delimited along a direction of rotation (DR) of the friction disc (5), and the hub (6) comprises at least one correspondingly adapted recess (12), wherein the locking section (11) of the race (8) and the recess (12) of the hub (6) form an interlocking anti-rotation lock when the friction disc (5) is in the connected state. The invention further comprises a race (8), a use of a race (8), a false twisting device (1), a use of a friction disc (5), and a method for changing a race (8) of a friction disc (5).

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.