The present disclosure relates to a core-sheath conjugate fiber for artificial hair including a core part and a sheath part, wherein the core-sheath conjugate fiber for artificial hair is a colored fiber, a color difference between the core-sheath conjugate fiber for artificial hair and the core part is 3.0 or more, and a color difference between the core-sheath conjugate fiber for artificial hair and the sheath part is also 3.0 or more. Provided are a core-sheath conjugate fiber for artificial hair capable of realizing deep colors and having a good appearance close to that of human hair, a hair ornament product including the core-sheath conjugate fiber, and a production method.

The present disclosure relates to a core-sheath conjugate fiber for artificial hair including a core part and a sheath part, wherein the core-sheath conjugate fiber for artificial hair is a colored fiber, a color difference between the core-sheath conjugate fiber for artificial hair and the core part is 3.0 or more, and a color difference between the core-sheath conjugate fiber for artificial hair and the sheath part is also 3.0 or more. Provided are a core-sheath conjugate fiber for artificial hair capable of realizing deep colors and having a good appearance close to that of human hair, a hair ornament product including the core-sheath conjugate fiber, and a production method.

Processes for forming synthetic fibers from polymer melts containing a first fiber forming polymer, a spin assist additive, and optionally a pigment additive are provided. Also provided are synthetic fibers of a first fiber forming polymer, a spin assist additive, and optionally a pigment additive, as well as articles of manufacture such as yarns, carpets and fabrics made up of these synthetic fibers.

Processes for forming synthetic fibers from polymer melts containing a first fiber forming polymer, a spin assist additive, and optionally a pigment additive are provided. Also provided are synthetic fibers of a first fiber forming polymer, a spin assist additive, and optionally a pigment additive, as well as articles of manufacture such as yarns, carpets and fabrics made up of these synthetic fibers.

A biodegradable additive, a biodegradable polyester fiber and a method for producing the same, and a biodegradable fabric are provided. The biodegradable additive includes a polyester resin material and a biodegradable resin material. The biodegradable resin material is at least one material selected from the group consisting of polybutylene succinate (PBS), polybutylene adipate terephthalate (PBAT), polycaprolactone (PCL), polylactic acid (PLA), and derivatives thereof. In the biodegradable additive, a content range of the polyester resin material is between 40 wt % and 80 wt %, and a content range of the biodegradable resin material is between 20 wt % and 60 wt %.

A biodegradable additive, a biodegradable polyester fiber and a method for producing the same, and a biodegradable fabric are provided. The biodegradable additive includes a polyester resin material and a biodegradable resin material. The biodegradable resin material is at least one material selected from the group consisting of polybutylene succinate (PBS), polybutylene adipate terephthalate (PBAT), polycaprolactone (PCL), polylactic acid (PLA), and derivatives thereof. In the biodegradable additive, a content range of the polyester resin material is between 40 wt % and 80 wt %, and a content range of the biodegradable resin material is between 20 wt % and 60 wt %.

The present invention relates to the technical field of fiber production and provides a method for preparing a polyolefin fiber and a product and use. The preparation method comprises the following specific steps: S1. mixing a silane coupling agent, a dispersant and an organic solvent to obtain a treatment solution; S2. uniformly dispersing the treatment solution on a fully dried ceramic fiber and high-speed stirring, wherein the ceramic fiber is a mixture of nanoscale alumina, microscale alumina, nanoscale silica and microscale silica; and S3. high-speed premixing a polyolefin powder and the treated ceramic fiber to obtain an anti-cutting functional masterbatch, and then melt spinning the same to obtain the polyolefin fiber. The method of the present invention enables significant improvement of the strength, wear resistance, softness, comfort, moisture absorption and permeability of the prepared polyolefin fiber, thereby greatly improving the anti-cutting performance, hand feel and comfort of the polyolefin fiber.

The present invention relates to the technical field of fiber production and provides a method for preparing a polyolefin fiber and a product and use. The preparation method comprises the following specific steps: S1. mixing a silane coupling agent, a dispersant and an organic solvent to obtain a treatment solution; S2. uniformly dispersing the treatment solution on a fully dried ceramic fiber and high-speed stirring, wherein the ceramic fiber is a mixture of nanoscale alumina, microscale alumina, nanoscale silica and microscale silica; and S3. high-speed premixing a polyolefin powder and the treated ceramic fiber to obtain an anti-cutting functional masterbatch, and then melt spinning the same to obtain the polyolefin fiber. The method of the present invention enables significant improvement of the strength, wear resistance, softness, comfort, moisture absorption and permeability of the prepared polyolefin fiber, thereby greatly improving the anti-cutting performance, hand feel and comfort of the polyolefin fiber.

Fibers made a polyethylene composition, and method of making the same. The polyethylene composition comprises less than or equal to 100 percent by weight of the units derived from ethylene and less than 20 percent by weight of units derived from one or more -olefin comonomers; wherein said polyethylene composition has a density in the range of 0.930 to 0.960 g/cm.sup.3, a molecular weight distribution (Mw/Mn) in the range of 1.70 to 3.5, a melt index (I.sub.2) in the range of 1 to 300 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of less than 2.5, a shear viscosity in the range of 20 to 250 Pascal-s at 3000 s.sup.1 shear rate measured at 190 C., vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition; and wherein the fiber is a monocomponent meltspun fiber.

A method for providing a multifilament bundle of melt spun polymer filaments that includes providing a spinning device including at least M extruders for melting M polymers, M groups of spinning stations, each group comprising N spinning stations, each spinning station comprising a spin pack coupled to a spin pump which receives molten polymer from one of the M extruders and spins a strand of filaments by pushing said polymer through the coupled spin pack, and N transformation stations for bundling M strands of filaments. The method further includes spinning N*M strands of filaments from the spinning stations at a given spin pump output and bundling the strands into N multifilament bundles via the N transformation stations whereby the spin pump outputs are varied over time.