95 results about "Fiber fabrication" patented technology

An optical fiber structure having a holey fiber arranged in a holey outer support structure made up of holey tubes encased in a thin walled outer jacket. The holey fiber may have a solid core surrounded by a holey cladding having a plurality of rings of holes. With the invention it is possible to produce robust, coated and jacketed fibers with microstructured core features of micrometer size relatively easily using existing fiber fabrication technology. This improvement is a result of the outer holey structure which reduces the thermal mass of the supporting structure and makes it possible to reliably and controllably retain small hole features during the fiber fabrication process.

The invention discloses a method for manufacturing modal fiber, which comprises basification reaction, ageing reaction, yellowing reaction, dissolution of viscose glue, filter of the viscose glue, defoaming of the viscose glue, ripening of the viscose glue, wet spinning, drawing and other related process steps. The method adopts cellulose pulp with alpha cellulose content of less than 95 percent as a raw material, uses common equipment for producing common viscose glue short fiber, and adopts the technology to control a simple and practical special process formulation and a spinning drawing mode to manufacture the modal fiber capable of reaching international standards. The method has the advantages of little investment, easily obtained and low-cost raw materials, high productivity and simple process operation; and the manufactured modal fiber has good quality and stable performance.

A method and apparatus for fabricating a complex, three-dimensional structure (12), such as a truss, from composite fiber/resin includes pulling a plurality of continuous fibers (50) from a feed source (62) along a processing path (58) about a longitudinal axis (14). At least some of the fibers are wound around the longitudinal axis in opposite directions (70,72) by rotational elements to form helical and reverse helical components (30, 34) that intersect at nodes (26,28). Select nodes are engaged by engagement members (84) and are maintained radially outwardly from the longitudinal axis by a support frame (80) to create sequential discrete segments (22) in the helical and reverse helical components. The select nodes can be engaged and maintained from outside the helical and reverse helical components. Resin can be applied to the fibers by resin applicator (90) and cured. A three-dimensional structure (200) can be formed with one or more continuous fibers forming two or more different components (204, 206) of the structure and transitioning at transition nodes (207). A three-dimensional structure can be formed with the components including a sleeve (162) of braided fibers surrounding a core (163) of elongated fibers to reduce gaps.

A method of fabricating a photonic crystal or photonic band gap optical fiber comprises providing a preform that includes a plurality of holes in an outer diameter, wherein the holes extend from a first end of a preform to a second end of the preform, and forming at least one radially inwardly-extending slot within the preform such that the slot intersects at least some of the holes, wherein the slot does not intersect at least one hole. The method also includes establishing a first pressure in the holes intersected by the slot by introducing the first pressure to the slot, and establishing a second pressure in the at least one hole not intersected by the slot by introducing the second pressure to an end of the at least one hole not intersected by the slot. The method further includes drawing the preform into a fiber while independently controlling the first and second pressures.

The invention discloses a manufacturing method of polyethylene colored fibers with ultrahigh molecular weight. According to the manufacturing method, colored fibers with the filament number of 0.33dtex-2.0dtex, the bundle fiber fineness of 22dtex-1776dtex, the fiber strength of 10cN/dT-40cN/dT, the modulus of 1000cN/dT-1600cN/dT and the elongation at break of 2%-4% are prepared through steps of preparing a colored spinning stock liquid, preparing colored proto-filaments and preparing the colored fibers. The polyethylene colored fibers have fine monofilament fineness and have thin and soft textures; the prepared colored fibers have good color uniformity and rich color varieties; the depth of color is adjustable, and the color fastness is high; the wear-resisting color fastness reaches the grade 4 or more, and the sunlight-resisting color fastness reaches the grade 4 or more; the soaping-resisting color fastness reaches the grade 4 or more, and the weather-resisting color fastness reaches the grade 4 or more; in a production process, a process is simple, and continuous and stable production is realized; one hundred thousand meters of a product can have no connectors, and a solvent is easy to volatilize; and after purification and separation are carried out by a rectification system, the solvent does not contain any pigment, and each bath of yarns have no color difference. The recycling rate is more than or equal to 99.5%, waste emission is reduced, and low carbon and environment friendliness are realized.

The invention provides a method for manufacturing plates from waste fibers of waste filtering bags, waste textiles and the like. The method comprises the steps of drying, loosening, dedusting, air laying, rolling, multi-stage compressing to form plates, trimming and packaging. An air laying technology is selected, so that fibers are arranged in a fiber net without directivity, and the horizontal and longitudinal ratio of the plates is approximate to 1:1, and the method is suitable for various fibers with different lengths and wide varieties, requires less on raw materials, and is suitable for a wide range of fibers; compared with a scheme that the required thickness of plates is reached by laying for multiple layers in a traditional carding method, the air-laying can obtain the required thickness of plates by directly controlling the output speed.

Provided is a range of glass compositions and glass fiber products made therefrom that show a unique combination of properties for both discontinuous fiber manufacturing and end use service. The glass compositions are particularly useful in high volume, high throughput, economical processes such as rotary spinning.

Described herein are fiber compositions, methods of generating the fiber compositions, and methods of using the fiber compositions in various applications utilizing fiber constructs, including for example, tissue engineering.

An acrylic-fiber finish for use in carbon-fiber production contributes to high tenacity of resultant carbon fiber. The acrylic-fiber finish for carbon-fiber production includes an epoxy-polyether-modified silicone and a surfactant. The weight ratios of the epoxy-polyether-modified silicone and the surfactant in the total of the non-volatile components of the finish respectively range from 1 to 95 wt % and from 5 to 50 wt %. The carbon fiber production method includes a fiber production process for producing an acrylic fiber for carbon-fiber production by applying the finish to an acrylic fiber which is a basic material for the acrylic fiber for carbon-fiber production; an oxidative stabilization process for converting the acrylic fiber produced in the fiber production process into oxidized fiber in an oxidative atmosphere at 200 to 300 deg.C.; and a carbonization process for carbonizing the oxidized fiber in an inert atmosphere at 300 to 2,000 deg.C.

The invention relates to a speaker vibration film made of non-wood fibers. The vibration film is prepared from the following raw materials in percentage by weight: 15-40% of grass fiber, 20-45% of cotton fiber and 15-65% of bast fiber. The speaker vibration film made of the non-wood fibers has short production period, great yield, relatively low price and high economic benefits, can not cause obvious adverse effect on the ecological environment by extensive use and have rich performance presentations.

Disclosed is a material for fiber manufacturing comprising a liquid crystal polyester satisfying the following requirements (a) and (b), wherein (a) the weight-average molecular weight is equal to or less than 30000 and the polydispersity is equal to or less than 2.5; and (b) the melt viscosity measured at 360 DEG C. with conditions of a nozzle pore diameter of 0.5 mm and a shear velocity of 1000 s-1 using a flow feature testing machine is equal to or less than 70 Pas.

The invention relates to a method for manufacturing a composite fiber containing a continuous glass fiber. The composite fiber is formed by mutually mixing offline terylene and an online continuous glass fiber; the glass fiber is drawn on line, and the terylene is finished yarn; a plurality of bundles of terylene with different yarn feed angles are drawn to be converged into sheet shapes after being subjected to tension adjustment; and the converged terylene yarn bundles are separated and then compounded with the glass fiber processed with an impregnating compound. The invention has the advantages of simplified process equipment and improved production smoothness; and meanwhile, the introduction of chemical fiber yarn-feed tension adjustment ensures that better practicability and better effect on the baked yarn clew moulding effect are achieved.

The invention relates to a basalt fiber manufacturing process. The process comprises the following steps: crushing the basalt raw ore, and then placing the crushed ore into mixing equipment to be mixed; grinding parts of materials in the mixing equipment according to a multi-draw manner, and then mixing the ground parts; preparing the uniformly mixed material powder into specimens, and detecting the phase of the specimens; if the detection result is in accordance with the standard of the basalt fiber, directly adding the materials into a tank furnace; otherwise, according to the difference between the detection result and the standard, adding corresponding components, uniformly mixing the materials added with the corresponding components, and feeding the mixture into the tank furnace; utilizing a heating electrode to heat the materials in the tank furnace, enabling the materials to be molten, and when the liquid level of the melt is raised to be coincident with a liquid level base plate at the front end of a monitoring rod, performing delayed heating; opening a discharge hole at the bottom of the tank furnace to enable the melt to flow out through a bushing plate, and then using a bushing blower to cool the melt, so as to form the fiber. The basalt fiber manufacturing process disclosed by the invention can improve the stability of the product quality and reduce waste of the product resources.

The invention discloses a simulation method of electro-spinning fiber closed-ring control based on the finite element and system discrimination. The method comprises the following steps of: (1) solving and establishing a finite element electro-spinning fiber motion model by adopting matlab software, and simulating the electro-spinning fiber moving process to obtain a virtual test system; (2) acquiring input and output values based on the virtual test system, and processing the input and output values by adopting a least square system discrimination method to acquire a procedure transfer function of the system; (3) setting a procedure transfer function controller; and (4) leading the controller to act on the finite element electro-spinning fiber motion model to realize simulation to the electro-spinning fiber closed-ring control. According to the method, time-based PID (proportion integration differentiation) control action is directly reflected into the finite element motion model to perform closed-ring control simulation, the limitation of respectively and independently performing electro-spinning fiber motion analysis and the limitation of a controller are eliminated, cost is reduced, the problem of controlling fiber diameters in the existing device is solved, and support is provided to automation of electro-spinning fiber manufacture devices.

This invention relates to a method of producing a preform for an optical fibre. More particularly, the present invention relates to a method of preparing preforms for the production of holey optical fibres. The invention provides a method of producing an optical fibre, said method comprising applying heat to the interior of a preform and subsequently drawing said optical fibre from said preform. The invention also provides a method of producing an optical fibre, said method comprising preparing a preform comprising a body of optically suitable material and removing material at predetermined locations in the body so as to provide a plurality of holes within the body, applying heat to the interior of the preform and subsequently drawing said optical fibre from said preform.