50results about How to "Reserve length" patented technology

The invention discloses a method for producing latex paper by using a circular-net multi-cylinder paper machine. 50 to 60 percent of bleached sulfate soft wood pulp, 35 to 45 percent of non-bleached sulfate soft wood pulp and 5 percent of manmade fiber are adopted, and the following technology is used at the same time so as to make the product better: defibrinating by using a previous-low-concentration fiberizer and a rear-middle-concentration fiberizer so that the beating degree is higher and the length of the fiber can be retained to the maximum extent, and the body paper has higher tensile strength and flexibility and is hard to break during use; besides the two different soft wood pulps, a certain amount of manmade fiber is added into the fiber raw material, so that the strength and the anti-abrasion performance of latex paper are enhanced; the body paper subjected to dipping treatment according to an optimized latex formula has higher strength and water, oil and high temperature resistance performance; a specific surface coating and back coating mode is performed on the dipped body paper, so the tensile strength, the bending resistance and the liquid resistance of the finished paper are enhanced; meanwhile, the latex paper is softer and durable, and higher in the surface strength.

The invention discloses a complete set of positioning device for artificial total hip joint replacement, which belongs to the field of medical equipment. The positioning device is conducive to the accurate osteotomy of the femoral neck with the oscillating saw, the accurate positioning of the use direction of the acetabular file, the square head bone knife, and the medullary cavity file, and the insertion of the femoral prosthesis into the femoral marrow at the original position and original angle. The cavity is beneficial to preserve the femoral calcar and the length of the femoral neck, which is conducive to the correct placement of the acetabular cup, shortens the operation time, reduces intraoperative bleeding, improves the success rate of the operation, relieves joint pain, corrects deformity, restores and improves joint movement Function.

The invention discloses a hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming composite material and a preparation method thereof. The hyperbranched polyamidoaminemodified plant fiber reinforced polypropylene micro foaming composite material consists of 97-98 wt% of polypropylene composite material and 2-3 wt% of chemical foaming agent, wherein the polypropylene composite material consists of polypropylene, hyperbranched polyamidoamine plant fiber, PP-g-GMA, antioxidant, lubricant and other additives. The hyperbranched polyamidoamine modified plant fiber reinforced polypropylene micro foaming composite material has the characteristics of low density, high strength, high rigidity, fine cell pores, uniform distribution, etc., can meet application requirements of automobile parts, adapts to development concepts of energy saving and environmental friendliness, and is in line with the development trend of automotive lightweight, therefore, the materialhas a broad development prospect in the field of automobiles.

The invention discloses a production method of non heat seal teabag paper. Final products can be obtained through a surface sizing process or a coating process in the existing production method of the non heat seal teabag paper, and a plurality of adhesives and additives are needed to add. The production method includes subjecting plant fibers to special processing, and reserving the length of fibers as far as possible during fully fibrillation; and adding appropriate thermosetting type reinforcing agent into the fiber after the special processing to obtain a body paper product through papermaking. The body paper product can be used directly without the surface sizing and the follow-up coating processing and can adapt to processing requirements for modern high-speed packing machines. According to the production method, the defect that final products can be obtained through the surface sizing or coating in the existing production method of the non heat seal teabag paper is overcome, the paper is formed once, the surface sizing or coating process is reduced, usage of chemical additives in the non heat seal teabag paper is reduced, obtained products are environment-friendly and good in processability, simultaneously, the production process is simplified, and the energy consumption and cost are reduced.

The invention provides an outlet fitting for a toilet cistern. The fitting (1) has a valve seat (13) arranged before an outlet opening (27) when viewed in a flow direction. A sealing element (4) of an overflow pipe (11) operates together with the valve seat (13). The pipe is upwardly moved for triggering flushing. The pipe (11) includes an inlet opening (9), an outlet opening (10), and a pipe wall (14), which circulates around a middle axis (M). At least one recess (16) is arranged in the wall (14) in a lower region (17) of the overflow pipe (11).

A fornix vaginae locating retractor for the hysterectomy by use of peritoneoscope is composed of a cup shaped sleeve tube and a rod unit passing through the cup bottom of said cup-shaped sleeve tube and with a front end extended out of the cup mouth and a tail end as handle.

The invention relates to a full-automatic nail polishing machine which comprises a vibration disc feeder, a horizontal nail polishing machine tool body and a vertical nail polishing machine tool body, wherein a front panel is arranged on the vertical nail polishing machine tool body; an automatic nail arranging distributor, a transmission screw rod and a transmission motor are fixed on the front panel; the automatic nail arranging distributor is connected with a discharging port of the vibration disc feeder; a discharging port of the automatic nail arranging distributor is propped against the outer thread at one end of the transmission screw rod; a discharging port is formed in the other end of the transmission screw rod; a grinding wheel and a grinding wheel transmission motor are fixed on the horizontal nail polishing machine tool body; a polishing port is formed in the vertical nail polishing machine tool body and below the transmission screw rod; the polishing surface of the grinding wheel extends into the polishing port. The full-automatic nail polishing machine is convenient to operate, and during the operation, the nails to be polished are put in the vibration disc feeder and then starting is carried out on the polishing machine, so that the labor intensity of manual emptying and polishing is decreased, the polishing efficiency is improved, the harm from the dust to the operators is avoided, the approximately same length and shape of the polished nails are realized, and the polishing quality is improved.

The invention belongs to the technical field of tobacco sheet manufacturing, and discloses a method for processing materials for manufacturing tobacco sheets with tobacco waste and the tobacco sheets manufactured with the method. The method includes the steps that after a mixture of tobacco stems and tobacco powder is extracted, the concentration is gradually lowered under the medium concentration condition; multistage soft defibrination processing is carried out; smashing and defibrination are carried out on materials obtained through defibrination processing and outer-fiber long-fiber stuff; and obtained slurry is evenly mixed to obtain materials used for manufacturing tobacco sheet base sheets. According to the method, gradual, sufficient and even mixing and defibering are carried out on the solid-phase mixture of the tobacco stems and the tobacco powder in the multistage soft defibrination processing process; moderate thin fibrillation is generated; the cutting effect and the damage effect on the materials in the defibrination process are reduced; the high thin fibrillation degree of the outer-fiber long-fiber stuff is obtained under the high pulping strength; the adsorption effect and the cross linking effect on thin components in the materials are facilitated; the retention rate of the tobacco powder and packing on a net is improved; the yield is improved; and the porosity and the physical performance of the tobacco sheet are improved.

The invention discloses a graphene and continuous carbon fiber synergistically-reinforced polyamide composite material and a preparation method thereof, wherein PA66, PA6, continuous carbon fiber, modified graphene, an antioxidant, a composite anti-hydrolysis agent, a composite light stabilizer, a lubricant, black masterbatch and a metal oxide are mixed, extruded, impregnated and granulated to prepare the graphene and continuous carbon fiber synergistically-reinforced polyamide composite material, wherein the surface of graphene is pre-treated with sodium dodecyl benzene sulfonate and a silane coupling agent to form the modified graphene. According to the present invention, the modified graphene is added, the anti-hydrolysis agent and the composite light stabilizer are compounded, and the polyamide material is modified through the melting impregnation pultrusion process, such that the prepared material has advantages of excellent rigidity, excellent impact toughness, excellent weathering resistance and good hydrolysis resistance, no fiber is exposed to the surface of the injection molding product, and the applications of carbon fiber reinforced polyamide in different fields can be met.

The invention discloses a rotary drum type hydraulic power disintegrator which comprises a charging hopper, a rotating drum, a rotating drum transmission device, a riding wheel device and a sealing device, wherein two large riding wheels are arranged on the outer side wall of the rotating drum, the two large riding wheels are both positioned on the riding wheel device at the bottom of the rotating drum, a plurality of strips parallel to the inner side wall of the rotating drum in axial direction are arranged on the inner side wall of the rotating drum, a plurality of baffle plates perpendicular to the strips are arranged inside the rotating drum, a plurality of uniformly arranged scraping plates are arranged on the side wall, between adjacent strips, of the rotating drum, and a pulp chest with an opening upward is arranged below the rotating drum inside a guard shield. The rotary drum type hydraulic power disintegrator provided by the invention changes a form that the traditional hydrapulper adopts a high speed revolution impeller and a blade for repulping, is a moderate and defibering, and ensures that impurities are discharged completely, the follow-up pulp processing load is alleviated, wastepaper can enter the rotating drum for decomposing without need of selecting, and the rotary drum type hydraulic power disintegrator is convenient for decomposing waste soft drink packages, household wastepaper, office wastepaper and the like, which are difficult to treat.

The invention discloses an information processing method and device and a storage medium. The method comprises the following steps: firstly, acquiring a data segment encrypted by using a first key, the data segment being a data segment of a data file; obtaining a first secret key corresponding to the data segment; then, carrying out exclusive-OR operation on each byte in the data segment by usinga first secret key to obtain a decrypted data segment; and then, displaying the decrypted data segments. The data file is encrypted in a segmented manner, so that the data file can be decrypted in a segmented manner, all data does not need to be loaded during online reading, and only the currently read content needs to be loaded and decrypted at the same time according to needs, so that the firstloading time is greatly shortened, and the reading efficiency is improved. Moreover, the length of the file is not changed by encrypting and decrypting each byte in an XOR manner, so that the purposesof the length of the file in various scenes can be reserved to the maximum extent.

The invention relates to a coating white cardboard made of various fiber raw materials and a production process thereof, the fiber raw materials of a core layer comprise bleached sulfate softwood pulp, bleached hardwood chemical thermo-mechanical pulp, white cardboard waste pulp and bagasse pulp, and the fiber raw materials of a bottom layer comprise bleached sulfate softwood pulp, bleached sulfate hardwood pulp and high-grade deinked pulp. An interlayer reinforcing agent is sprayed between the layers; the bagasse pulp can be chemically bleached mechanical pulp, and the interlayer enhancer comprises 40-75 parts of spraying starch, 10-20 parts of water-based novolac epoxy resin emulsion and 8-15 parts of styrene-acrylic emulsion; the retention and drainage aid in the slurry of the core layer and the bottom layer comprises PEI, CPAM and bentonite. According to the method, the problem of shortage of wood raw materials can be relieved, the cost is reduced, the defects of the strength, water resistance and the like of fiber pulp are overcome by spraying the interlayer reinforcing agent between layers, the finished pulp can have better water filtering performance and papermaking performance by chemically bleaching the mechanical bagasse pulp, and meanwhile, the strength performance of the finished paper is improved.

The invention discloses an oil and gas well fracturing construction method. The oil and gas well fracturing construction method adopts a biological junction perforation plugging technology for operation. According to the fracturing construction technology, a biological junction is used for replacing the segmented temporary plugging effect of a bridge plug, the biological junction perforation plugging technology can solve the construction of a casing deformation section and can also be used in a normal whole well section, and meanwhile, the biological junction can also be used for steering in the fracturing process. The environment-friendly biological junction segmented temporary plugging technology is adopted, the bridge plug construction risk is reduced, a reservoir is uniformly fractured, segmented fracturing can be carried out on a casing deformation section, and the influence of casing deformation on the yield of a well is reduced.

The invention discloses an online mixing injection molding process suitable for a carbon fiber automobile part. Equipment for achieving the process comprises a double-screw extruder, an injection molding machine, an automatic feeding machine, a forced side feeding system, a mold temperature machine and a water cooler. The online mixing injection molding process is characterized by comprising the steps that plastic particles, additives and fillers are added into the double-screw extruder to be mixed and plasticized through the automatic feeding machine and the forced side feeding system according to a formula resin system; recycled carbon fibers are added into the back section of a screw through the forced side feeding system, and mixing and plasticizing are further conducted; the uniformly mixed plastic and carbon fibers enter an injection cylinder of the injection molding machine through a feeding valve of the forced side feeding system; an injection mold is closed through a mold locking unit; an injection valve of the injection molding machine is opened, the uniformly mixed plastic and carbon fibers in the injection cylinder of the injection molding machine are injected into a forming mold through the injection valve of the injection molding machine, meanwhile the temperature is controlled through the mold temperature machine, then cooling solidification through the water cooler and demolding are conducted, and a semi-finished product can be obtained; and after the semi-finished product is subjected to demolding, the required product can be obtained through trimming and other working procedures.

The invention discloses an antibacterial ramie fiber reinforced polypropylene composite material and a preparation method thereof, and relates to the technical field of polypropylene composite materials, the antibacterial ramie fiber reinforced polypropylene composite material is prepared from the following raw materials by weight: 65-85 parts of polypropylene, 10-30 parts of modified ramie fiber, 3-6 parts of a compatilizer, and 1-3 parts of an auxiliary agent; wherein the modified ramie fibers are obtained by performing alkali treatment and oxidation treatment on ramie fibers and grafting a PHMG antibacterial agent; the preparation method of the polypropylene composite material comprises the following steps: mixing the raw materials, carrying out melt extrusion, and drying. Ramie fiber reinforced polypropylene is adopted, alkali treatment and oxidation treatment are firstly carried out on the ramie fiber, on one hand, the surface roughness of the fiber is increased, the hydrophilicity of the ramie fiber is reduced, and the interface bonding between the ramie fiber and a polypropylene matrix is improved; on the other hand, PHMG can be grafted to the surface of the fiber through Schiff base reaction, and the grafted ramie fiber has a long-acting antibacterial effect; the composite material prepared by the invention is excellent in mechanical property and efficient in antibiosis.

Disclosed is a fast adjusting buckle for a skipping rope. The buckle comprises a sleeve tube and a lock sleeve, the sleeve tube is provided with two tubular bodies arranged side by side, the two tubular bodies are integrally connected and provided with axial through holes for a rope to penetrate through respectively, the outer walls of the front portions of the two tubular bodies are circumferentially provided with at least two longitudinal opening grooves communicated with the respective axial through holes and elastically-deformable clamping jaws which are located in the grooves and extend out of axial suspension arms respectively; the lock sleeve is provided with two sleeve bodies matched with the two tubular bodies on the sleeve tube, and the two sleeve bodies can extrude the clampingjaws on the two tubular bodies and tightly sleeve the sleeve tube respectively. Through the combination of the sleeve tube with a pair of parallel holes and the lock sleeve, one end of the rope can penetrate through one hole and then reversely penetrate through the other hole, and then the rope can be ingeniously clamped by the clamping jaws. The fast adjusting buckle is simple in structure and convenient to operate, the lock sleeve can be adjust to clamp or loosen the rope without any tool, and the length of the rope is quite convenient to adjust or the rope is quite convenient to replace.

The invention discloses a PA6 composite material special for engine air intake manifolds. The PA6 composite material comprises the following raw materials by weight: 60-70 parts of PA6 resin, 25-35 parts of glass fiber, 0.5-1 part of a dispersant, 4-5 parts of a compatibilizer, 0.5-1 part of a coupling agent, 1-2 parts of carbon black, and 1-2 parts of an antioxidant, and is prepared by: mixing the raw materials by a high-speed mixer, then conducting mixing milling by a millstone type mixing device, and carrying out parallel twin-screw extrusion granulation. The glass fiber is high strength glass fiber with a monofilament diameter of 8micrometer, the compatibilizer is formed by compounding of a maleic anhydride grafted butane-octene copolymer and N, N'-ethylene bis stearamide in a weight ratio of 3:1. The PA6 composite material special for engine air intake manifolds has good secondary fusion welding bondability and high strength after welding. The engine air intake manifolds preparedfrom the PA6 composite material special for engine air intake manifolds have the advantages of high integral strength, good toughness, little glass fiber exposure, strong blast resistance ability in awelded rib area and the like.