An ultra-high molecular weight, ultra-fine particle size polyethylene has a viscosity average molecular weight (Mv) greater than 1×10.sup.6. The polyethylene is spherical or are sphere-like particles having a mean particle size of 10-100 μm, having a standard deviation of 2-15 μm and a bulk density of 0.1-0.3 g/mL. Using the polyethylene as a basic polyethylene, a grafted polyethylene can be obtained by means of a solid-phase grafting method; and a glass fiber-reinforced polyethylene composition comprising the polyethylene and glass fibers, and a sheet or pipe prepared therefrom; a solubilized ultra-high molecular weight, ultra-fine particle size polyethylene; and a fiber and a film prepared from the solubilized ultra-high molecular weight, ultra-fine particle size polyethylene may also be obtained. The method has simple steps, is easy to control, has a relatively low cost and a high repeatability, and can realize industrialisation.

The present invention provides an artificial hair and a method for producing same. The method for producing an artificial hair according to the present invention comprises: a step of mixing polyamide 6 powder and a master batch at a predetermined weight ratio; a step of drawing an artificial hair from the mixture; a step of forming a loop part by knotting a distal end of the drawn artificial hair; a step of cutting the distal end of the artificial hair, leaving just 1-1.5 mm from the knotted part of the loop part; a step of trimming the artificial hair to a predetermined length after the cutting; and a step of bundling a plurality of the trimmed artificial hair.

The present invention provides an artificial hair and a method for producing same. The method for producing an artificial hair according to the present invention comprises: a step of mixing polyamide 6 powder and a master batch at a predetermined weight ratio; a step of drawing an artificial hair from the mixture; a step of forming a loop part by knotting a distal end of the drawn artificial hair; a step of cutting the distal end of the artificial hair, leaving just 1-1.5 mm from the knotted part of the loop part; a step of trimming the artificial hair to a predetermined length after the cutting; and a step of bundling a plurality of the trimmed artificial hair.

A method for producing an artificial turf fiber, comprising: preparing a core polymer mixture from a core polymer and a thread polymer forming beads within the core polymer; coextruding the core polymer mixture with a cladding polymer component into a monofilament, the core polymer mixture forming a cylindrical core, The cladding polymer component forming a cladding encompassing the core with a non-circular profile; quenching the monofilament; reheating the quenched monofilament; stretching the reheated monofilament to deform the beads into threadlike regions; and providing one or more of the stretched monofilaments as the artificial turf fiber.

The present invention comprises the steps of contacting a boron nitride nanotube and a stabilizer in a solvent, and removing a portion of the solvent to obtain a liquid crystal composition including a liquid crystal in which at least a portion of the stabilizer is adsorbed on the surface of the boron nitride nanotube.

One embodiment of the present disclosure provides a spinning pack, a yarn manufacturing apparatus including the spinning pack, a yarn manufacturing method using the yarn manufacturing apparatus, and yarn manufactured by the manufacturing method. The spinning pack includes a spinneret having a nozzle unit, a heating unit for heating the nozzle unit, a pack body surrounding at least a part of the spinneret, and a spinning block surrounding the pack body, wherein the spinneret includes a first surface which defines a storage space while facing at least one surface of the spinning block, and a second surface facing the first surface, wherein the nozzle unit includes a plurality of discharge holes and protrudes from the second surface; and wherein the heating unit is disposed at the outer side of the nozzle unit.

A polyamide 46 multifilament has a strength of 6.0 to 9.0 cN/dtex and an elongation at break of 15% to 30%, an elongation rate (E′10) of less than 2.5% after heat treatment at 120° C. for 24 hours and subsequent stretching performed 10 times in a room temperature environment, and the difference (E′10-E′1) between the elongation rate (E′1) of the heat-treated fiber measured after stretching it once in a room temperature environment and its elongation rate (E′10) measured after stretching it ten times in a room temperature environment is less than 0.60%.

A polyamide 46 multifilament has a strength of 6.0 to 9.0 cN/dtex and an elongation at break of 15% to 30%, an elongation rate (E′10) of less than 2.5% after heat treatment at 120° C. for 24 hours and subsequent stretching performed 10 times in a room temperature environment, and the difference (E′10-E′1) between the elongation rate (E′1) of the heat-treated fiber measured after stretching it once in a room temperature environment and its elongation rate (E′10) measured after stretching it ten times in a room temperature environment is less than 0.60%.

The disclosure discloses a washable flame retardant viscose fabric. The viscose fabric includes a flame retardant viscose fiber; and a method of preparing the viscose fiber includes the following steps: impregnation, squeezing, ageing, yellowing, addition before spinning, spinning, bundling, drafting, cutting off, first washing, desulfurization, second washing, pickling, third washing, application of oil bath, drying, and packaging. Before spinning, an aqueous dispersion of flame retardant, an aqueous dispersion of hyperbranched nanocellulose and a dispersant are uniformly added to a spinning glue using a pre-spinning injection system. During the production of the flame retardant viscose used, the aqueous dispersion of flame retardant, the aqueous dispersion of hyperbranched nanocellulose and the dispersant are introduced into the spinning glue by the pre-spinning injection system before spinning, so that the flame retardant has a high residual rate in the subsequent coagulation bath.

An embolic filter balloon is disclosed. The embolic filter balloon may comprise an inflatable balloon portion. Further, the inflatable balloon portion may be coupled to a filter member. The embolic filter balloon may be disposed in a body lumen. In some embodiments, the embolic filter balloon may be configured such that when the inflatable balloon portion is at least partially inflated the filter member extends at least partially across the body lumen. Such a configuration may allow the embolic filter balloon, when deployed, to filter particles greater than a predetermined size from a fluid in the body lumen.