51results about How to "Guaranteed evenness" patented technology

The invention provides a spinning process of covering yarn with high hollowness degree, a prepared covering yarn and a process for weaving towel by utilizing the covering yarn. The spinning process comprises the following steps of: compositing and twisting two crude cotton yarns and water-soluble vinylon filament with number of 4.1-7.3 tex to prepare a spun yarn with cotton fiber covering the water-soluble vinylon filament; and hydrolyzing the water-soluble vinylon filament to obtain the covering yarn with the high hollowness degree. The strength and the hollowness degree of the covering yarn with the high hollowness degree, prepared by the spinning process disclosed by the invention, are higher than the strength and the hollowness degree of a common hollow covering yarn with the same yarn count, the overing yarn with the high hollowness degree is soft and fluffy and has strong water absorbability and improved heat insulation performance; and the woven towel prepared by the process of the invention is light and fluffy, and has good heat insulation performance and resilience, high water absorption speed, large unit-area water absorption amount and high drying speed.

The invention relates to a production method of tipping paper of base paper used by cigarettes with high natural air permeability and aims to provide the production method of the tipping paper of the base paper used by the cigarettes with the high natural air permeability of 80-300CU. The production method of the tipping paper of the base paper used by the cigarettes with the high natural air permeability is characterized by comprising the following steps: a, beating section, beating is conducted on needle pulp and eucalyptus pulp through fibrillation and cut of a millstone mill to reach the effects that the beating degree of the needle pulp is 20-300SR, the wet weight of the needle pulp is 9-10g, the beating degree of the eucalyptus pulp is 20-220SR, and the wet weight of the eucalyptus pulp is 1-2g, b, preparation of pulp. Raw material components of pulp material comprises, by weight, 20-30 of needle pulp, 70-80 of eucalyptus pulp, 50-80 calcium carbonate and 0.2-0.4 wet strength agent. The produced tipping paper of the base paper used by the cigarettes with the high natural air permeability of 80-300CU uses high natural holes to bring a large quantity of are into the main stream smoke of the cigarettes and enables injurious ingredients in the main stream smoke to be greatly reduced.

The invention discloses water-resistant abrasive base paper and a production method thereof. The water-resistant abrasive base paper is prepared from the following raw materials in parts by weight: 32-35 parts of softwood pulp fibers, 32-35 parts of hardwood pulp fibers, 5-10 parts of polyester fibers, 10-15 parts of modified thermoplastic resin, 3-5 parts of a water-proofing agent and 3-5 parts of an oil-proofing agent. The preparation method comprises the following steps: (1) mixing, crushing, pulping and repulping the softwood pulp fibers, the hardwood pulp fibers and the polyester fibers in parts by weight; (2) starching by a fourdrinier machine; (3) molding and drying a paper sheet on the fourdrinier machine, and carrying out gumming treatment once online, wherein the glue quantity is 10%-15%; (4) after drying the glue obtained in the step (3), carrying out secondary gumming on the front surface of the paper sheet, wherein the glue quantity is 6%-10%; and (5) calendaring the paper sheet which is gummed for the second time in the step (4) by a soft calendar. The Water-resistant abrasive paper prepared from the water-resistant abrasive base paper has the advantages of good waterproofness, softness, solvent resistance, dimension stability, high dry strength, good high temperature resistance and good weathering resistance.

The invention discloses a production method of lightweight paper. The production method comprises a wood pulp proportioning step and a mixing step. Needle BCMTP chemimechanical pulp and needle bleached chemical wood pulp are proportioned and pulped; a neutral sizing agent, cationic starch, cationic polyacrylamide and talcum powder are used; then a paper manufacturing process is performed. Importedneedle wood pulp and broadleaf wood bleached sulfate pulp are respectively pulped and blended, and various additives are added; the blend is conveyed into an approaching system for dehydration forming through a wet part and then is further dehydrated through a squeezing part; after pre-drying, semi-dry calendaring and surface sizing are performed, the product is dried through a drying part; the product is baked at low temperature, subjected to soft calendaring finishing and wound. First of all, high bulkiness is achieved, and the flatness and the tensile strength of paper are not affected, sothe production method is suitable for high-speed printing; secondly, no flourescent brightener is contained; compared with common coated paper, offset paper and lightweight paper, the lightweight paper produced according to the method is relatively dark and has a color close to the primary color of wood pulp, so that visual fatigue cannot be caused by long-time reading.

The invention discloses a multifunctional refrigerator lower hinge device. The multifunctional refrigerator lower hinge device comprises a lower hinge body, a limiting block and a locking block. The lower hinge body is composed of a rectangular body and an extension part connected with the tail part of the rectangular body, and the limiting block and the locking block are fixedly connected and can be fixed in a left door spindle fixing hole or a right door spindle fixing hole through a door spindle stud. Two limiting self-locking studs can be arranged in an upper set of stud fixing holes and a lower set of stud fixing holes. The limiting block, the locking block, the door spindle stud and the two limiting studs form a matched structure for opening and closing a refrigerator door for a refrigerator body. The multifunctional refrigerator lower hinge device integrates the positioning function, the limiting function and the self-locking function and is of a structure in bilateral symmetry or longitudinal symmetry or central symmetry, and thus the door can be directly replaced and installed without replacing the lower hinge body when changing between a left opening door and a right opening door, time and labor are saved, and cost is reduced.

The invention discloses a vortex spinning anti-pilling knitted fabric. The vortex spinning anti-pilling knitted fabric comprises a fabric body; the fabric body adopts a rib stitch knitted structure; the odd-numbered paths and the even-numbered paths of the fabric body are formed by penetrating and knitting an antistatic core-spun yarn; the antistatic covering yarn comprises a core yarn and a wrapping fiber, the wrapping fiber is organic cotton fiber; the wrapping fiber is spirally wrapped outside the core yarn; the core yarn comprises a core yarn layer and a skin layer; the core yarn layer ismade of untwisted and stranded flax fiber yarns; and the skin layer is formed by spirally winding carbon fiber filaments outside the core yarn layer. According to the vortex spinning anti-pilling knitted fabric, the antistatic core-spun yarn which is excellent in antistatic performance, less in surface hairiness and uniform in evenness is adopted as the knitting yarn, so that the vortex spinning anti-pilling knitted fabric is soft and comfortable in touch, good in wet permeability and air permeability, antistatic and free of pilling, and has excellent wearability.

The invention relates to the field of paper making and provides a method for preparing high-transparency copying paper by applying waste-paper deinked pulp. By adoption of the high-transparency copying paper, the defects of bad transparency, poor deinking effect and poor mechanical property in the copying paper prepared by the waste paper pulp in the prior art are solved. The high-transparency copying paper comprises the following steps of: (1) collecting the waste paper pulp and adding a modified deinking agent to carry out deinking on the waste paper pulp; (2) adding sodium borohydride and diethylene triamine penlaacetic acid into deinking pulp obtained by treatment of the step (1), and washing; (3) carrying out beating and pulping treatment on the deinking pulp subjected to washing, wherein the beating degree is 30-35 degree SR; (4) carrying out beating and pulping treatment on chemical pulp of needlebush, wherein the beating degree is 70-80 degree SR; (5) mixing the pulp in the step (3) and the pulp in the step (4), and carrying out papermaking, wherein a dispersing agent is added in the papermaking process.

The invention relates to a laboratory control simulation device used for research of organic phosphorus hydrolysis influencing process of enzymes in water environment. An enzyme dissolving reagent storage tank, enzyme solution preparation containers and test tubes arranged in a device cabinet body, the enzyme solution preparation containers are located under the enzyme dissolving reagent storage tank and are communicated with the enzyme dissolving reagent storage tank through enzyme dissolving reagent drawing pipes, and the test tubes are communicated with the enzyme solution preparation containers through enzyme solution reagent drawing pipes. The indoor simulation device is equipped with an ultraviolet disinfection device, an upper part temperature control device, enzyme dissolving reagent quantificational drawing devices which are connected with the enzyme dissolving reagent drawing pipes and used for quantificational drawing of the enzyme dissolving reagent in the enzyme dissolving reagent storage tank to the enzyme solution preparation containers, enzyme solution quantificational drawing devices which are connected with the enzyme solution drawing pipes and used for quantificational drawing of the solution in the enzyme solution preparation containers to the test tubes, and a pH control system monitoring and adjusting the pH values of the solutions in the test tubes. The indoor simulation device can reduce interference factors in the reaction process effectively and raises the reaction controllability.

The invention relates to the related technical field of styrene pipe transportation, in particular to a high-sealing pipeline laying device for styrene pipe transportation, which comprises a base, a fixed clamping assembly and an adjustable clamping assembly, a movable mounting seat is driven by a hydraulic assembly, and the base is of a rectangular seat body structure; a fixed mounting seat is arranged on the upper surface of the base close to the left side end, a first linear guide rail is mounted on the right side of the base, and a movable mounting seat is movably mounted on the first linear guide rail; according to the welding positioning device for pipeline laying, the base, the fixed clamping assembly and the adjustable clamping assembly are combined to form the welding positioning device for pipeline laying, so that the fixed clamping assembly and the adjustable clamping assembly are correspondingly aligned with two to-be-welded pipeline structures, and the two to-be-welded pipeline structures are prevented from deviating; therefore, the levelness of the butt joint port is effectively ensured.

The invention discloses an expanding device for perforation of seamless steel pipes. The expanding device is applied to a perforator, and comprises a pair of rollers, a steel pipe, an ejector rod, a pair of guide plates and a correction mechanism; the correction mechanism is connected to the inside of the ejector rod, the ejector rod is placed right in the middle of the pair of rollers and the pair of guide plates, the steel pipe is placed between the pair of rollers and the pair of guide plates and attached to the rollers and the guide plates, and the ejector rod penetrates into the steel pipe; and the correction mechanism comprises correction wheels, a trapezoidal gear, an adjustment shaft and a trapezoidal fluted disc. The expanding device can effectively perform roundness shaping on asteel pipe through hole formed after perforation, the generation of an ellipse shape after perforation of the steel pipe is avoided, the uniformity of the wall thickness after perforation of the steelpipe is ensured, and the qualified rate of the finished steel pipe is increased; and the height of the correction wheels extending into a correction gap can be adjusted according to the required perforation aperture of the to-be-machined steel pipe, so that the correct mechanism meets perforation shaping of different steel pipes with different apertures, the applicability of the device is improved, and the device is suitable for popularization.

According to the glass curtain wall frame node and the installation method thereof, the telescopic sealing rubber strip is arranged behind the aluminum alloy pressing plate of the glass curtain wall frame, in-out position adjustment of the aluminum alloy pressing plate is achieved, and therefore adjustment of the position of an aluminum alloy decorative buckle cover of the glass curtain wall frame in the in-out position direction is achieved; and the effect that the finished surface of the glass curtain wall frame aluminum alloy decorative buckle cover is flush with the finished surface of the outer wall coating is ensured. The invention is suitable for the engineering condition that the outer side of the glass curtain wall frame is the exterior wall coating. The glass curtain wall frame node is adopted, the size of the in-out direction of an aluminum alloy decorative buckle cover of a glass curtain wall frame can be adjusted according to the site condition through matched adjustment of an aluminum alloy pressing plate and a telescopic sealing rubber strip, and extra work needed for ensuring that the aluminum alloy decorative buckle cover and an outer wall are located on the same plane after completion is avoided; project cost is saved, and on-site working efficiency is improved.

The invention discloses an anti-damage low-temperature-resistant cable material, which is prepared from the following raw materials by weight: 90-110 parts of a PVC resin, 0.1-0.3 part of nanometer aluminum oxide, 15-20 parts of glass fiber, 0.5-1 part of stearic acid, 2-6 parts of white carbon black, 2-3 parts of a plasticizer, 10-12 parts of a compatilizer and 3-4 parts of a stabilizer. According to the invention, the PVC resin is used as the base material, the proper functional raw material addition ingredients are added, and in the processing process, the proper compounding is generated through cross-linking and filling effects, so that the advantages can be made up, the whole material has excellent properties of damage resistance, wear resistance, oil resistance, low temperature resistance, high tensile strength, tear resistance and the like; and the preparation process is simple, can be adjusted on existing processing equipment, is easy to operate, and can meet the requirements of large-scale production of factories.

The invention discloses a manufacturing method of a fireproof board core paper. The invention belongs to the technical field of papermaking, needle-leaved wood, broad-leaved wood and camphorwood are used as fiber raw materials, the preparation method comprises the following steps: cooking, extracting, performing oxygen delignification, performing hydrogen peroxide micro-bleaching, washing, pulping, preparing pulp, slushing, screening and purifying, sizing, dehydrating and forming a net part, squeezing, performing pre-drying, performing surface sizing, performing post-drying, coiling, rewindingand packaging, wherein the ratio of the needle-leaved wood to the broad-leaved wood to the camphorwood is (4.5-5): (3-4): 1. The fireproof board core paper manufactured through the method is good inuniformity, stable in quantification, consistent in tightness, smooth in paper surface, good in laminating performance, free of impurities on the appearance of the paper surface and free of lint on the end face, and the flame retardant property and the sound insulation property of the core paper are improved simultaneously.

The invention discloses a method for dewatering double sides of an asbestos-free papermaking plate. The method includes the steps of (1) adding polyacrylamide (PAM) and bentonite into slurry after the slurry leaves a pressurized screen; (2) subjecting the slurry flowing into a slurry box to slurry distribution and rectification; (3) the slurry flows onto a papermaking screen with two sides sealed at a slurry outlet of the slurry box to form two an upper layer and a lower layer, wherein the lower layer is a slurry layer and the upper layer is a water layer, in the flowing process of the slurry, the water layer enters a slurry and water separation box suspended above the papermaking screen and is absorbed and discharged by vacuum water suction tubes in the slurry and water separation box, and the slurry layer penetrates the bottom of the slurry and water separation box and is dewatered by water scraping plates arranged at the bottom of the papermaking screen. By the aid of the method, double sides of the slurry can be dewatered on a screen portion of a paper making machine, the problem about dewatering difficulty of the slurry on the screen portion of the papermaking machine is solved, and continuous production of the asbestos-free papermaking plate is realized.

The invention discloses an integrated intelligent terminal with space disinfection, hand disinfection and temperature measurement functions. The integrated intelligent terminal comprises a box body, an ozone generator, a motor and a liquid storage tank. When the temperature of a person needs to be measured, the person only needs to face a temperature measurement all-in-one machine, so that the body temperature of the person can be rapidly measured, and the measurement is rapid and convenient; when the hands of the person need to be disinfected, a disinfectant in the liquid storage tank enters a liquid storage box through a liquid guide hose by utilizing a water pump and is sprayed out through a spray head, and therefore, spray disinfection of the hands of the person is realized; and when the space needs to be disinfected, ozone is generated by utilizing the ozone generator, the ozone further passes through a first gas guide tube, then enters a second gas guide tube and further enters a gas guide box, the ozone in the gas guide box passes through a third gas guide tube and is sprayed out through the spray head, so that disinfection of indoor space and other spaces is achieved, a fan is used for blowing, the speed of the ozone diffusing into the air is increased, and the space disinfection efficiency and effect are improved.

The invention relates to a disc bale plucker having a bale plucking beater with multi-gear adjustable reduction speed. A cotton discharging hopper is provided with a first transmission motor, a secondtransmission motor is arranged at the left end of a cross arm, and a third transmission motor is arranged at the right end of the cross arm; a main control machine box is arranged on one side of theouter disc; the first transmission motor, the second transmission motor and the third transmission motor respectively communicate with the main control machine box; a discharging pipe is provided witha pressure controller, and the pressure controller is connected with the main control machine box; the pressure controller is arranged at the inlet end of the discharging pipe; the two ends of the bale plucking beater penetrate through flange plates respectively, and the flange plates are fixed to the bale plucking beater through screws; and a positioning rod is arranged at the bent part of the cross arm and the discharging pipe. The disc bale plucker is simple in structure, can be manufactured by slightly modifying existing equipment, is low in cost and efficient and stable in operation, andis suitable for large-scale popularization and application.

Belonging to the technical field of papermaking, the invention in particular relates to a papermaking filler pretreatment device and a treatment method. The device includes a first static mixer, a reactor and a second static mixer that are communicated in order by a charge pipe, the outlet of the reactor is equipped with a filler classification apparatus, which consists of a multi-stage vibrationscreen, a particle size detection apparatus and an ash content determinator. The treatment method adopting the device includes: filler dilution, filler coating, small particle size filler re-coating,pretreated filler pump-out, filler particle size correction and oversized filler recycling. The device has a simple structure and is convenient to use, the filler particles are fully coated with a flocculant, and the filler particle size is effectively adjusted. The filler treated by the device provided by the invention has good particle fineness and uniformity, thus enhancing the combination strength of the flocculant and particles, improving the retention rate of the papermaking filler on paper stock, increasing the ash content of base paper and lowering the production cost.