A fibrous monofilament includes plant pulp fibers and the fibrous monofilament includes at least 30 wt % of plant based natural cellulose fibers.

Disclosed is a retro-reflective thread 100 including an internal section 10; a plurality of fibers 12, each fiber comprising a respective longitudinal axis and a respective surface and each fiber comprising a first material that is at least partially optically transmissive, and wherein said plurality of fibers are configured with their respective longitudinal axes substantially co-linearly aligned with one another and said plurality of fibers are interconnected in series around said internal section and wherein a first part 12b of said respective surface of each of said plurality of fibers faces into said internal section; and a reflective material 14 provided on said first part of said respective surface of each of said plurality of fibers.

A method of communicating one or more fiber properties in a yarn and articles made thereof by providing a yarn containing at least one fiber formed from a fiber forming polymer and having a fiber property identification additive present in the fiber is provided. Also provided are yarns and articles made thereof with a fiber property identification additive which communicates one or more fiber properties in the yarn or article made thereof. In addition, methods for intensifying color of a yarn are provided as well as methods for improving bulked continuous filament fiber processing through substitution of problematic colorants are also described.

Provided is a method of manufacturing high strength synthetic fibers, and high strength synthetic fibers manufactured using the same. More particularly, the method involves a localized heating process by raising the temperature of a molten spinning fiber to a temperature higher than that of a pack body during a short period of time with no degradation through a heating zone located in the immediate vicinity of capillary in the spinning nozzle, so as to effectively control the molecular entanglement structure in the molten polymer without reducing the molecular weight and thus to enhance the drawability of the as-spun fibers, thereby improving the mechanical properties of the as-spun fibers, such as strength, elongation, etc., using the existing processes of melt spinning and drawing and thus enabling a mass production of a high-performance fiber at low cost.

Provided is a method of manufacturing high strength synthetic fibers, and high strength synthetic fibers manufactured using the same. More particularly, the method involves a localized heating process by raising the temperature of a molten spinning fiber to a temperature higher than that of a pack body during a short period of time with no degradation through a heating zone located in the immediate vicinity of capillary in the spinning nozzle, so as to effectively control the molecular entanglement structure in the molten polymer without reducing the molecular weight and thus to enhance the drawability of the as-spun fibers, thereby improving the mechanical properties of the as-spun fibers, such as strength, elongation, etc., using the existing processes of melt spinning and drawing and thus enabling a mass production of a high-performance fiber at low cost.

The present invention relates to a dynamic fiber/yarn capable of changing in response to external stimuli. The fiber/yarn in accordance with the present invention undergoes a radial symmetric change. The fiber/yarn in accordance with the present invention may be heat sensitive, moisture sensitive, magnetic field sensitive, electromagnetic field sensitive, etc.

The present invention relates to a dynamic fiber/yarn capable of changing in response to external stimuli. The fiber/yarn in accordance with the present invention undergoes a radial symmetric change. The fiber/yarn in accordance with the present invention may be heat sensitive, moisture sensitive, magnetic field sensitive, electromagnetic field sensitive, etc.

A spinneret for melt-spinning polymeric fibers including a spinneret body defining a plurality of orifices extending through the spinneret body, wherein the plurality of orifices each comprise a capillary that open at a face of the spinneret body for polymer filament extrusion therefrom. The plurality of orifices include (i) a first group of orifices each having a first capillary having a first capillary length (L) and first capillary hydraulic diameter (D.sub.H) defining a first L/DH ratio; and (ii) a second group of orifices each having a second capillary having a second capillary length (L) and second capillary hydraulic diameter (D.sub.H) defining a second L/DH ratio, in which the first L/D.sub.H ratio is larger than the second L/D.sub.H ratio. The first group of orifices define at least one first zone at the face of the spinneret body, and the second group of orifices define at least one second zone at the face of the spinneret body.

Examples herein include prosthetic valves, valve leaflets and related methods. In an example, a prosthetic valve is included having a plurality of leaflets. The leaflets can each have a root portion and an edge portion substantially opposite the root portion and movable relative to the root portion. The leaflets can include a fibrous matrix including polymeric fibers having an average diameter of about 10 nanometers to about 10 micrometers. A coating can surround the polymeric fibers within the fibrous matrix. The coating can have a thickness of about 3 to about 30 nanometers. The coating can be formed of a material selected from the group consisting of a metal oxide, a nitride, a carbide, a sulfide, or fluoride. In an example, a method of making a valve is included. Other examples are also included herein.

A textile graphene component thermal fiber, or filament yarn, is able to be integrated into a textile, for example performance knits, woven and non-woven garments and linens, in order to conduct absorb or emit heat in order to regulate the body temperature for a user. The textile graphene component thermal fiber is able to absorb thermal energy and optimally conduct the thermal energy for extended periods of time. The textile graphene component thermal fiber includes a quantity of polymers, a first quantity of graphene, and a second quantity of graphene The quantity of polymers and the first quantity of graphene are mixed into a polymeric sheath. The second quantity of graphene and the quantity of thermally conductive substances are mixed into a thermal-conducting core. The polymeric sheath encloses the thermal conducting core in order to form the textile bi-component thermal fiber.