482 results about "Fiber drawing" patented technology

Side-emitting step index fibers. Between core and cladding, the side-emitting step index fibers have scattering centers that ensure the coupling out of light from the fiber. The side-emitting step index fibers are produced by preforms that contain inlay rods, in which the scattering centers are embedded and which are applied to the outer region of the fiber core during fiber drawing. Alternatively, at least one inlay tube can be used.

The present invention directs to a method of manufacturing low water peak single mode optical fiber, which comprises performing deposition in a substrate tube using PCVD technology, whereby a deposited layer of a certain construction design is formed on the inner wall of the substrate tube, melt contracting the substrate tube into a solid core rod according to melt contraction technology, producing an optical fiber preform by combining the core rod and a jacket tube of low hydroxyl content by means of RIT technology or by depositing an outer cladding on the outer surface of the core rod using OVD technology, sending the optical fiber preform into a fiber drawing furnace to draw it into an optical fiber, wherein: in the PCVD technology, the content of impurities in a gas mixture of raw materials, which is characterized by the infrared spectrum transmissivity thereof, is required to a transmissivity of 90% or greater, the water content in O₂ is 100 ppb or less, the water content in C₂F₆ is 1000 ppb or less, the hydroxyl content of the substrate tube is 1000 ppb or less, the dynamic leak rate of a deposition machine is 1.0×10⁻⁵ mbar·l/s or less; during melt contraction of the substrate tube, the dynamic leak rate of a melt contraction machine is 1.0×10⁻⁵ mbar·l/s or less; the hydroxyl content of the jacket tube of low hydroxyl content is required to be 10 ppm or less; the relative humidity of environment during the process of manufacture is 25% or less; the ratio of the cladding diameter to the core layer diameter (b/a value) in the waveguide structure of the optical fiber is from 2.0 to 7.0.

High loft, low density nonwoven webs are produced by forming substantially continuous, spunbond, crimped, bicomponent fibers of A/B side by side morphology in an unheated fiber draw unit. The fibers are then heated and cooled in the absence of impeding forces to achieve maximum crimp in the z-direction and produce a web of lofted material. The resultant material is particularly suitable for use as an insulator. Particulates may be added to the webs if desired.

The invention discloses a method for producing polythene fiber with high strength and high modulus by melting fiber drawing and a device thereof. The method includes steps as follows: blend composition of polythene with super high molecular weight and three element blend composition of polythene with super high molecular weight are used as raw material, the raw material is spout fibre adobe after melted through a screw extruder, the fibre adobe is preset drafted after cooling, then low power drafted after once heating, then high power drafted after twice heating, finally is processed heat processing for obtaining polythene fiber with high strength and high modulus. The screw extruder, a cooling mechanism, a drafting machine processing preset drafting, an once heating mechanism, a low power drafting machine, a twice heating mechanism, a high power drafting machine, a heat processing mechanism, a winding reeling machine are arranged in the device orderly. The invention provides a producing method with simple technique, short producing flow, low cost and no pollution aiming at problem that UHMWPE melting spout fibre process has difficult to spin, and provides a device with compact equipment and easy to operate.

A method of fabricating a hole assisted fiber includes forming one or more slots in the perimeter of the cladding region. A tube is overcollapsed around the perimeter of the cladding region to form one or more channels, where the one or more channels bounded on one side by the overcollapsed tube. A fiber is drawn from the overcollapsed preform. An internal pressure is applied to the one or more channels during the fiber drawing step to form one or more holes of a pre-selected shape within the cladding region.

In the method of drawing fiber continuously from preforms for manufacturing an optical fiber, a first preform is displaced along a fiber-drawing axis and is drawn into an optical fiber through a fiber-drawing furnace disposed on the fiber-drawing axis, and a second preform is displaced along the fiber-drawing axis, which second preform is butt welded to the first preform so as to be drawn into an optical fiber following on from the first fiber. The two preforms are butt welded, i.e. they are welded together end-to-end, by displacing at least one power laser along the fiber-drawing axis, and by servo-controlling the displacement of said laser to the displacement of the two preforms so as to maintain a laser beam emitted by the power laser at the same height as the two ends to be welded together, thereby making it possible to reduce considerably the size of the zone affected by the welding, and to avoid polluting the side surfaces of the two preforms upstream and downstream from the weld.

The invention relates to a composition for high-performance glass fiber, which comprises 55 to 63 wt percent of SiO2, 23 to 26 wt percent of Al2O3, 11.5 to 14.5 wt percent of MgO, 0.5 to 2.5 wt percent of CeO2, 0 to 0.5 wt percent of LiO2, 0 to 1.5 wt percent of Bi2O3, 0 to 1.5 wt percent of WO3, and the balance of unavoidable impurities; the contents of the Li2O, the Bi2O and the WO3 can not be zero simultaneously. By adopting the composition as a raw material, the high-performance glass fiber can be produced by using a melting furnace and a fiber drawing furnace which are made from the existing fire resisting materials to perform melting and wire drawing. With reduced production difficulty and low cost, the composition has good producibility, is suitable for industrial continuous production and can save energy source, and the produced high-performance glass fiber can be used as the reinforcing material of a resin base composite material and has the advantages of high strength, corrosion resistance, high temperature resistance and light weight.

The invention relates to the technical field of home decoration, in particular to a construction process for home wiredrawing antique decoration. The invention discloses a construction process for home wiredrawing antique decoration, which comprises the following steps: material sanding, polyurethane ground paint coating, polyurethane ground paint sanding, nitryl true color ground paint coating, nitryl true color ground paint sanding, wiredrawing paint effect coating, nitryl transparent ground paint coating, nitryl glazing, nitryl transparent ground paint coating, cloth printing, lighting and shading, nitryl transparent ground paint coating, nitryl transparent ground paint sanding, nitryl glaze dry brushing, nitryl ground paint coating and nitryl transparent surface paint coating. The process can effectively achieve the paint film visual fullness and solve the problems of nitryl paint surface light loss and partial color change of antique furniture. At the same time, the process not only can ensure that solid wood furniture achieves wiredrawing antique coating effect, but also can ensure that a medium density fiber board or other composite materials are endowed with the wiredrawing antique coating effect, so that the wiredrawing antique effect can be achieved without adopting solid wood.

The invention relates to alkali-free glass for the production of continuous glass fiber product and production process thereof, pertaining to inorganic non-metallic material field. The main production raw materials of the alkali-free glass comprise quartz sand, limestone, pyrophyllite and dolomite; wherein, the production processes comprise proportioning, melting, fiber forming, fiber drawing and product processing; the temperature for fiber forming is 1160-1360 DEG C, the viscosity is 1000 poises and liquid phase temperature is at least 97 DEG C lower than that of the fiber forming; the weight proportions of compositions to the product are respectively that: silicon dioxide is 58-62 percent, calcium oxide 20-24 percent, aluminum oxide 12-14 percent, magnesium oxide 2-4 percent, fluorine 0-0.6 percent, potassium oxide and sodium oxide 0-2 percent in total, titanium oxide 0-2 percent, iron trioxide 0-0.6%, sulfur trioxide 0-0.6% and micro impurity 1%. By adjusting the variety and proportion thereof of glass raw materials, the invention removes fluoride materials such as fluorite and boride such as borocalcite from raw materials of glass, thereby controlling the origin of the waster gas pollutants.

The invention provides a preparation method of lead zirconate-titante ceramic fiber, which relates to a ceramic fiber. The fiber obtained with the diameter less than 30Mum and the length about 1cm has a single perovskite phase and comparatively high consistency and the invention can be a preparation method of lead zirconate-titante ceramic fiber of ceramic fiber for 1-3 piezoelectric composites. The preparation of lead zirconate-titante precursor solution is : lead acetate trihydrate is added into n-Butyl alcohol, complexing agent glacial acetic acid is added then; the mixture is heated, dissolved and cooled to obtain solution A; zirconium butoxide and titanium butoxide are poured into the n-Butyl alcohol in sequence to obtain the binary mixed solution of zirconium and titanium, and then acetyl acetone is added into the binary mixed solution and solution B is obtained after backflowing; the solution A and the solution B are mixed and the lead zirconate-titante precursor solution is obtained after backflowing. The preparation of lead zirconate-titante precursor sol is: the lead zirconate-titante precursor solution is steamed, concentrated and stirred, rod winding is carried out and the lead zirconate-titante precursor sol is obtained after concentration; lead zirconate-titante gel fiber is obtained through fiber drawing; after aging, the lead zirconate-titante gel fiber is dried and carried out by heat treatment.

The invention relates to a method for producing a superfine basalt continuous fiber, which comprises the following steps: breaking, smashing and screening a basalt ore raw material; removing iron from the basalt raw material powder; washing the raw material with clear water and mixing the raw material with a fusing assistant; and performing melting, soakage and fiber drawing on the mixed raw material in a tank furnace to finally obtain the superfine basalt continuous fiber. The production process provided by the invention has the characteristics of low cost, excellent product quality, and the like.

The present invention can provide a distinctive article which includes a plurality of fibers (62), wherein the fibers include a selected polymer, fiber material. In a particular aspect, the fiber material can exhibit a “low” crystallization rate. In other aspects, the fiber material has been subjected to a low fiber-draw percentage, and the polymer in the fibers can have a high crystallinity. Further aspects can include a fiber material which has been subjected to a low fiber-draw speed, and can include fibers which have a high tenacity. In still other aspects, the fibers can be configured to provide a fibrous web (60), and the fibrous web (60) can have a distinctive tensile strength quotient, with respect to tensile strengths along its machine-direction (22) and cross-direction (24).

The invention discloses a method for making dried meat floss. The specific steps are as follows: take fresh pork leg meat and carry out peeling and cleaning treatment; add prepared soup material to the cleaned pork leg meat and stir for 2 to 3 hours; Pour the pork leg meat and soup into the pot, simmer for 8-10 hours, remove the bones; dry the boneless meat fibers until the water content is 20%-25%, and squeeze out the broth for use The dried meat fiber is drawn, and then the above-mentioned broth to be used is stirred evenly, and then stir-fried; the stir-fried meat floss is cooled, sterilized, packaged, and out of the box. Compared with the prior art, the present invention has the following advantages: the present invention uses fresh pork leg bones as raw materials, and braises with the bones, which not only reduces the damage to the meat fiber, but also presses out the bone oil to enhance the brightness of the meat floss , retain the nutritious flavor in the meat and bones, so that the produced meat floss keeps the original flavor, fresh and tender taste, rich in nutrition.

The fiber includes central core area, cladding area and coating area. Cladding area includes buried micropore array in axial direction surrounding the core area and coating area. Changing shapes, structures, size and quantity and arrangement etc. forms major effective refractivity between two perpendicular directions in fiber so as to fabricate birefringence microstructure optical fiber. Fabricating method includes steps: preparing pure or doping quartz tiny stick and pure quartz tiny tube with certain wall thickness; fabricating the said sticks and tubes to specific shape; assembling the said sticks and tubes to desired shape; bundling sticks and tubes in quartz sleeve; fiber drawing forms optical fiber.

A method of producing fibrous aggregate, comprising: a supplying and discharging step in which a fiberizable liquid is supplied from a means for storing a fiberizable liquid to a means for discharging a fiberizable liquid via a supplying pipe, and the fiberizable liquid is discharged from the discharging means; and a fibers-collecting step in which fibers drawn and fiberized by applying an electrical field to the discharged fiberizable liquid are accumulated directly on a collecting surface of a collector while the collecting surface is unidirectionally conveyed to form the fibrous aggregate; wherein the discharging means is carried on a support capable of moving along an endless track capable of rotationally travelling between a pair of rotating shafts, and the fiberizable liquid is discharged from the discharging means while the support is revolved at a constant velocity under the condition that a moving direction of a linear motion area in the endless track conforms to a width direction of the collecting surface is disclosed.

The linear semiconductor substrate 1 or 2 of the present invention comprises at least one desired thin film 4 formed on a linear substrate 3 having a length ten or more times greater than a width, thickness, or diameter of the linear substrate itself. Adopting semiconductor as the thin film 4 forms a linear semiconductor thin film. The linear semiconductor substrate 1 or 2 of the present invention is produced by utilizing a fiber-drawing technique which is a fabricating technique of optical fibers.

The invention provides a fiber manufacturing method and a fiber drawing furnace, wherein the application amount of the helium gas is reduced and the pressure variation inside the furnace is lowered. Meanwhile, the gas is kept at a certain degree. The fiber drawing furnace (10) comprises a furnace tube (15) used for feeding glass parent material (11); a heater (16) arranged at the periphery of the furnace tube (15); and an upper chamber (20) connected with the upper part of the furnace tube (15) and used for accommodating the glass parent material (11).

The invention relates to a fiber pressure-retaining drawing device under pressurized steam. The drawing device comprises a drawing cavity, wherein, a feeding steam seal component, a preheating drawing cavity, a middle steam seal component, a heating drawing cavity and a discharging steam seal component are sequentially arranged in the drawing cavity along the advancing direction of filament bundle; the preheating drawing cavity is equipped with a steam preheating pipe for providing steam to the preheating drawing cavity; the heating drawing cavity is equipped with a steam heating pipe for providing steam to the heating drawing cavity; a steam preheating chamber is arranged in the middle part outside the preheating drawing cavity, the wall of the preheating drawing cavity is made of a porous material, and the steam preheating chamber is communicated with the steam preheating pipe; and a steam heating chamber is arranged in the middle part outside the heating drawing cavity, the wall of the heating drawing cavity is made of a porous material, and the steam heating chamber is communicated with the steam heating pipe. By utilizing the fiber pressure-retaining drawing device, the technical problem of the existing fiber drawing device under the pressurized steam that the internal pressure can not meet the technological requirement is solved, and broken filaments caused by up-down vibration of the filament bundle are avoided so that the internal pressure and temperature of the drawing cavity reach a constant state.