The present invention provides a composite ultra-high molecular weight polyethylene fiber and a preparation method thereof, wherein the method comprises mixing glass fiber, graphene slurry, UHMWPE powder and white oil, and then swelling to a molten state, then cooling into a gel-spun, and finally making the fiber from the gel-spun. The method of the present disclosure not only can solve the problem that the glass fiber has poor dispersibility in the case of high viscoelasticity of the ultra-high molecular weight polyethylene, but also can improve the cut resistance of the ultra-high molecular weight polyethylene fiber on the basis of ensuring the flexibility of the yarn.

A method for manufacturing a nylon 66 hollow fiber includes steps as follows. A plurality of nylon 66 particles are provided. A melting step is provided, wherein the nylon 66 particles are melted so as to form a spun liquid. A fiber spitting step is provided, wherein the spun liquid goes through a hollow spinneret plate so as to form hollow nascent fibers. An evacuating step is provided, wherein the hollow nascent fibers are preliminarily solidified so as to form hollow half-solidified fibers. A cooling step is provided, wherein the hollow half-solidified fibers are cooled and solidified so as to form solidified fibers. A collecting and oiling step is provided. A drawing step is provided. A winding step is provided so as to obtain the nylon 66 hollow fiber.

A method for manufacturing a nylon 66 hollow fiber includes steps as follows. A plurality of nylon 66 particles are provided. A melting step is provided, wherein the nylon 66 particles are melted so as to form a spun liquid. A fiber spitting step is provided, wherein the spun liquid goes through a hollow spinneret plate so as to form hollow nascent fibers. An evacuating step is provided, wherein the hollow nascent fibers are preliminarily solidified so as to form hollow half-solidified fibers. A cooling step is provided, wherein the hollow half-solidified fibers are cooled and solidified so as to form solidified fibers. A collecting and oiling step is provided. A drawing step is provided. A winding step is provided so as to obtain the nylon 66 hollow fiber.

The present invention relates to a method for producing a multifilament yarn from a melt of a copolymer of polyacrylicnitrile. The method is characterized in that a multifilament yarn is produced by means of pressing a melt of a copolymer through a spinning nozzle and is subsequently stretched at least tenfold. The present invention further relates to a correspondingly produced multifilament yarn.

The present invention relates to a method of preparing non-woven fabric for base cloth of carpet, which has an improved fixability of BCF yarn inserted on a base cloth in a tufting process by crimp processing a web with a stretched polyester filament and needle punching the web. The residual stress of the stretched polyester filament is eliminated and the formability of the non-woven fabric for base cloth of carpet is improved, and the fixability of the BCF yarn in the carpet can be improved by interlacing of polyester filament.

Described herein is a quenching system comprising a spinneret to spin molten polymer, a quench stack disposed operatively below the spinneret and the flow communication with the spinneret, a first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of the molten polymer spun through the spinneret, at a solidification temperature and a second means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially.

Described herein is a quenching system comprising a spinneret to spin molten polymer, a quench stack disposed operatively below the spinneret and the flow communication with the spinneret, a first means to provide a first stream of ambient air to provide partially-quenched solidified fibers of the molten polymer spun through the spinneret, at a solidification temperature and a second means to provide a second stream of conditioned air at a below-ambient temperature for further quenching the partially quenched solidified fibers, wherein the second stream of the conditioned air is provided through an adapter placed operatively below a region where the molten polymer solidifies partially.

Absorbable polyester fibers, braids, and surgical meshes with prolonged strength retention have been developed. These devices are preferably derived from biocompatible copolymers or homopolymers of 4-hydroxybutyrate. These devices provide a wider range of in vivo strength retention properties than are currently available, and could offer additional benefits such as anti-adhesion properties, reduced risks of infection or other post-operative problems resulting from absorption and eventual elimination of the device, and competitive cost. The devices may also be particularly suitable for use in pediatric populations where their absorption should not hinder growth, and provide in all patient populations wound healing with long-term mechanical stability. The devices may additionally be combined with autologous, allogenic and/or xenogenic tissues to provide implants with improved mechanical, biological and handling properties.

Absorbable polyester fibers, braids, and surgical meshes with prolonged strength retention have been developed. These devices are preferably derived from biocompatible copolymers or homopolymers of 4-hydroxybutyrate. These devices provide a wider range of in vivo strength retention properties than are currently available, and could offer additional benefits such as anti-adhesion properties, reduced risks of infection or other post-operative problems resulting from absorption and eventual elimination of the device, and competitive cost. The devices may also be particularly suitable for use in pediatric populations where their absorption should not hinder growth, and provide in all patient populations wound healing with long-term mechanical stability. The devices may additionally be combined with autologous, allogenic and/or xenogenic tissues to provide implants with improved mechanical, biological and handling properties.

Disclosed is a method for preparing a fully-degradable non-woven fabric by spun-bonding, including: (S1) preparation of a poly(caprolactone-co-lactide acid) (P(CL-co-LA)); (S2) preparation of a copolymerized-modified poly(lactide acid) (PLA); and (S3) preparation of a full-degradable non-woven fabric using a spun-bond method. In this disclosure, the PLA is modified in gradient several times to prepare the full-degradable non-woven fabric in combination with an optimized spun-bonding method.