47results about How to "Reduce stretch deformation" patented technology

A catheter balloon formed of a polymeric material such as expanded polytetrafluoroethylene (ePTFE) bonded to a second layer formed of a low tensile set polymer and/or impregnated with a low tensile set polymer. In a presently preferred embodiment, the low tensile set polymer is a silicone-polyurethane copolymer elastomer or a diene polymer elastomer. The low tensile set polymer has high strength, low modulus, high elongation, and low tensile set. The diene or silicone-polyurethane has a low tensile set, which facilitates deflation of the balloon to a low profile deflated configuration. One aspect of the invention provides improved attachment of the diene to the ePTFE. In one embodiment, the second layer is formed of a diene mixed with a bonding promoter such as a vulcanizing agent which is covalently bonded to the diene.

The invention discloses a coffee carbon fiber plush printed blanket and a preparation method thereof. The blanket is knitted by a double-needle-bed warp knitting machine; and the plush yarn of the blanket is a yarn obtained by blended knitting of coffee carbon fibers and acrylic fibers, wherein the double-yarn specification of the yarn obtained by the blended knitting is 28-36s; the base material terylene is warped, and then the coiled head is used as the knitting yarn and weft insertion yarn of the blanket. The preparation method comprises the following steps: starching and high-temperature setting of a white grey cloth, fuzzing, lustering, shearing, flat screen printing, aging and fixation, washing, dehydrating and drying, carding, fuzzing, lustering, shearing, binding and packaging and warehousing. The coffee carbon fiber plush printed blanket disclosed by the invention has the characteristics of bright color, soft handfeel, heat accumulation, warm keeping and the like, special healthcare functions of dehumidification, anion release, antibacterium and the like, and advantages of economy and environmental protection.

The invention discloses an image inhomogeneous mapping method based on grid deformation optimization and belongs to the field of image processing. According to the image inhomogeneous mapping method based on grid deformation optimization, a fast image scaling technology based on content sensing and suitable for different user terminals is provided, images with fixed sizes can be displayed on different types of terminal equipment in a self-adaptive mode, important contents in an original image can be kept as much as possible, key objects are kept distortionless, and the import structure, namely the spatial position relation, in the image is kept unchanged so that optimal image observing quality can be guaranteed. According to the image inhomogeneous mapping method based on grid deformation optimization, a content-based image scaling optimal model is established by defining a series of energy functions capable of effectively controlling grid deformation, deformation of obvious key areas is avoided during image scaling, and in this way, user experience of browsing images on mobile digital equipment is improved; the quality of a scaling result can be effectively improved, and tensile deformation of the edges of the key areas can be avoided to a certain degree.

The invention provides a viscoelastic friction type energy dissipation self-resetting buckling-restrained brace. The viscoelastic friction type energy dissipation self-resetting buckling-restrained brace comprises an upper fixing cylinder, a lower fixing cylinder, fixing guide plates, a piston rod, a fixing end plate, springs, a first viscoelastic energy dissipation assembly, a second viscoelasticenergy dissipation assembly, first friction structures and second friction structures. Both ends of the fixing guide plates are separately inserted and fixed into the upper fixing cylinder and the lower fixing cylinder. The piston rod is arranged between the interior of the upper fixing cylinder and the interior of the lower fixing cylinder. The first viscoelastic energy dissipation assembly andthe second viscoelastic energy dissipation assembly separately sleeve both ends of the piston rod. The springs are arranged between the first viscoelastic energy dissipation assembly and the second viscoelastic energy dissipation assembly. The first end of the piston rod limits the first viscoelastic energy dissipation assembly, and the fixing end plate limits the second viscoelastic energy dissipation assembly. The viscoelastic friction type energy dissipation self-resetting buckling-restrained brace has self-resetting capability, can be automatically adjusted according to the brace force deformation characteristics to prevent damage to the internal components of the brace, and has stable and efficient energy dissipation capability.

The invention provides a vacuum attachment device for contact lithography of a flexible film substrate, comprising a vacuum pump, a frame, a flapper valve, a support table limiter, a vacuum chamber, amask support table, a bleed valve, a vacuum gauge, a top pressure mechanism, a sealing door opening/closing mechanism, a sealing door, a film holder, a flexible film, a sealing pad, and a photolithography mask. Wherein the mask support table can carry the photolithography mask and the film to be attached to move into and out of the vacuum chamber, the lithography mask is separated from that flexible film and spaced apart with the sealing pad, the support table limiter realizes positioning of the mask support table, the sealing door is closed, the vacuum pump and vacuum gauge control the degree of vacuum, As that action of the top pressure mechanism lowers the film support, the flexible film is in close contact with the sealing pad on the surface of the mask plate to form an airtight space, the pressure difference introduce by the vacuum is broken outside the airtight space by the bleed valve, the airtight space is compressed, the flexible film is closely adhered to the surface of themask plate, the mask support table is taken out and the mask plate and the flexible film are treated as a whole to be exposed.

The invention provides an aluminum foil double-face fast coating device. The aluminum foil double-face fast coating device comprises a first frame, an unwinding mechanism, a feeding drawing mechanism, a coating mechanism, a drying oven, a discharging drawing mechanism and a winding mechanism, wherein the unwinding mechanism, the feeding drawing mechanism, the coating mechanism, the drying oven, the discharging drawing mechanism and the winding mechanism are arranged on the first frame. The coating mechanism is a double-face ladder type coating mechanism which comprises a front side coating mechanism body and a back side coating mechanism body. The drying oven is a suspension drying oven. Aluminum foil sequentially passes through the unwinding mechanism, the feeding drawing mechanism, the coating mechanism, the drying oven, the discharging drawing mechanism and the winding mechanism, and then double-face coating is completed. An aluminum foil double-face fast coating method sequentially comprises the steps of unwinding, front side coating, back side coating, double-face drying and winding. According to the aluminum foil double-face fast coating device and method, through the ladder type one-time front side and back side coating and one-time double-face drying technologies, the material conveying path is greatly shortened, fast coating is achieved, the coating speed can reach 150m/min, in addition, the double faces are dried at a time after being coated, the space of the drying oven is saved, the manufacturing cost is reduced, meanwhile, energy is saved by about 160KW/h, and the aluminum foil double-face fast coating device and method are suitable for gravure coating and reverse kiss coating.

The invention discloses a combined shear wall with steel plates concealed in an internal prestressed tendon CFST (concrete filled steel tube) frame and a manufacturing method and belongs to the fieldof steel-concrete combined shear walls. The combined shear wall comprises CFST frame columns, prestressed tendons, steel plates and a reinforced concrete shear wall, wherein the CFST frame columns arearranged at two ends of the shear wall; the prestressed tendons are arranged in the CFST frame columns; the two CFST frame columns are connected through the steel plates; shear wall rebars are tied;tying bars penetrate through the steel plates to connect the rebars on two sides; concrete is poured; prestress is applied with a post-tensioning method, and the combined shear wall with steel platesconcealed in the internal prestressed tendon CFST frame is formed. compared with ordinary steel tube-concrete frame shear walls and steel plate shear walls, the combined shear wall has improved bearing capacity, attenuation of the bearing capacity and the rigidity is slow, the later aseismic property is stable, the shear wall has recoverability in the presence of the prestressed tendons, displacement of an overall structure is reduced, and the aseismic property is excellent; non-bonding prestressed tendon construction is convenient, and the combined shear wall can be applied to high-rise buildings or large complicated multi-storey buildings.

The invention discloses a self-adaptive buckling-preventing support which comprises a sealing cylinder cavity. The top face of the sealing cylinder cavity is open. An upper sealing end cylinder is installed on the top face. A hole matched with a piston rod in radial size is formed in the center of the upper sealing end cylinder. The piston rod penetrates through the center hole of the upper sealing end cylinder and is partially installed in the sealing cylinder cavity. An energy consumption partition plate is installed on the piston rod. The energy consumption partition plate is transversely arranged on the piston rod in a sleeving manner, and moves in the sealing cylinder cavity along with moving of the piston rod. The sealing cylinder cavity is filled with damping liquid. Springs are further installed in the sealing cylinder cavity. The self-adaptive buckling-preventing support has the beneficial effects that the energy consumption partition plate can move along with the piston, an upper oil storing box cylinder, a lower oil storing box limiting cylinder and the energy consumption partition plate arranged internally have shearing and extruding effects on the damping liquid, the first-level spring and the second-level spring deform in an extruding manner to generate restoring force, after external force disappears, the piston rod is driven to carry out self restoring, and selfperformance can be adjusted automatically according to the change of the affected external excitation effect.

The invention provides a washing method for cashmere fabric and a full-automatic washing machine. The washing method comprises the following steps that 1, in a water inflow stage, water inflow is conducted in a penetrating mode at first, and then synchronous water inflow is conducted; 2, in a washing stage, an impeller is driven to rotate in an alternative forward and backward mode at a set washing rotating speed to generate vortex immersion washing water flow, and immersion washing and decontamination are conducted on the cashmere fabric through the combination of the centripetal traction andbuoyancy of the water flow; 3, in a dehydration stage, pre-dehydration, spraying dehydration and normal dehydration are sequentially involved. Since the water inflow in the penetrating mode is involved in the water inflow stage, inflow water sprayed on the cashmere fabric can quickly wet naps on the surface of the cashmere fabric through the impact force and centrifugal force of the water flow under the rotation centrifugal force, and meanwhile through centrifugal force generated by the rotation of the inner drum, floating frictions and pull of the cashmere fabric can be effectively avoided;the cashmere fabric can be completely wet by means of the combination of the water inflow in the penetrating mode and the synchronous water inflow.

The invention discloses a preparation method of a PVC (Polyvinyl Chloride) adhesive tape. The preparation method comprises the following steps of (a) coating one surface of a PVC film with a pressure-sensitive adhesive; (b) afterwards, coating with a mold release agent, which can be hardened by ultraviolet irradiation, on the other surface of the PVC film; and (c) drying through ultraviolet irradiation, so as to harden the mold release agent. According to the method, firstly, the pressure-sensitive adhesive is used for coating; next, the mold release agent is used for coating; and afterwards,the mold release agent is hardened by using an ultraviolet ray. The mold release agent can be prevented from migration, due to a high temperature, by a plasticizer in the PVC film to further influencethe attachment of the mold release agent to the PVC film; and the phenomenon that a platinum catalyst loses a catalytic effect as being toxified by chlorine in the PVC film when in use cannot occur.According to the method provided by the invention, the coating and the drying of glue and the mold release agent can be completed through one-time processing; the processing time and the waste of energy can be reduced; the waste of the transportation cost can also be reduced; and the problem that the lateral extension of a material is nonuniform due to tensile deformation in the processing processcan be also avoided.

The invention discloses a protecting method for long-wall strip type coordinated skip-mining under earth and rockfill dams. With the adoption of the method, in combination with geological and mining conditions of mining areas and positions of the earth and rockfill dams, mining work surface positions, mining widths and mining sequences are reasonably determined, the earth and rockfill dams are subjected to smaller tensile deformation, cracks are avoided, safe usage of earth and rockfill dam bodies and safe and normal conduction of mining are guaranteed, that is, on the basis that the safety of the earth and rockfill dam bodies is guaranteed, safe mining under the earth and rockfill dam bodies is realized, 'three unders' pressed coal is liberated to the maximum extent, the coal resource mining rate is increased, service lives of mines are prolonged, experience in coal mining under the earth and rockfill dam bodies can be enriched and accumulated, references can be provided for coal mining under similar conditions, and huge economic benefit and social benefit can be obtained.

The invention discloses a cable wrapping tape and a columnar winding method thereof. The cable wrapping tape comprises a spool and a plurality of material belt layers wound on the spool, and the material belt layers are flat aligned at the outer edges of the spool; the material belt layers comprise a plurality of side-by-side superposed material belts, and the material belt winding superposition layers of the superposed material belts in the same material belt layer are consistent; and the heads and tails of the material belts between the superposed material belts in the same material belt layer are in transition connection through transition material belts uniformly. A film belt columnar material coil is formed by winding a plurality of material belt layers. The thickness of each layer ismoderate; through setting of number of turns, uniformly connected transition belts are formed, so that the material belts of each layer are wound tightly and firmly; the deformation of the material belts is small, and the quality improvement of the material belts is benefited; and columnar coils are formed by a plurality of belt material coil layers, and the cable wrapping belt has the characteristics of small tensile deformation of the material belts and tidy edges. The problems of inherent tensile deformation of belt materials wound with traditional flat plates, collapse of plates and limited width and length are solved.

The invention discloses an anti-aging rubber belt, and belongs to the field of rubber products. The anti-aging rubber belt comprises the following raw materials in parts by weight: 60-70 parts of natural rubber, 30-40 parts of ethylene propylene diene monomer, 2-2.5 parts of a vulcanizing agent, 3.5-5 parts of an accelerant, 4-6 parts of nano zinc oxide, 1-3 parts of an active agent, 4-6 parts ofan anti-aging agent, 1.5-2.0 parts of protective paraffin, 15-20 parts of reinforcing white carbon black, 10-15 parts of filler, 1-2 parts of an antioxidant and 5-10 parts of softener. The anti-agingrubber belt is good in tensile strength, high in tearing strength and small in tensile deformation, and can be used in a long-term severe environment. The invention further provides a preparation method of the anti-aging rubber belt. The method is simple in preparation process and low in preparation cost, and large-scale industrial production can be achieved. The invention further provides an adhesive tape sleeve containing the anti-aging rubber belt, the adhesive tape sleeve can replace the conventional sealing mode which wastes time and labor, such as an iron wire, a binding wire and the like, so that the labor cost can be greatly saved, and the adhesive tape sleeve is durable and environment-friendly.

The invention provides a tyre moulding drum. The tyre moulding drum comprises two semi-drum devices used for sleeving a main shaft; each semi-drum device comprises a reverse coating unit, a guiding body, and a guiding disk; each reverse coating unit comprises a plurality of reverse coating rods and a rolling unit connected with the reverse coating rods through pivotal connection; each guiding bodyis used for guiding and accommodating the reverse coating rods; each rolling unit is designed to be cooperative with the external peripheral arc-shaped surface of the corresponding guiding disk; whenthe plurality of reverse coating rods are at initial positions, a corresponding rolling unit is driven to swing inward, and is stored at the radial inner side of a corresponding guiding body; the radial height of a first periphery surface formed at the outermost radial side of the rolling units is lower than that of a second periphery surface formed by the external surface of the guiding body, and that of a third periphery surface formed by the supporting surfaces of the reverse coating rods; the height of the second periphery surface is equal to the height of the third periphery surface; thereverse coating rods and the guiding bodies are combined so as to form basically sealed flat cylindrical surfaces used for receiving tyres; and at the same time, in reverse coating, the rolling unitsare driven to swing outward, and are higher than the reverse coating rods, so that tyre parts are jacked along the radial direction, and the friction between tyre parts and the reverse coating rods and the guiding body is reduced.

A single-rail embedded hinge automatic door closing mechanism comprises a door mounting block single-guide-rail mechanism, a connecting rod and a cabinet mounting plate, a spring mounting rod is fixed to a door mounting block, an angle keeping block is rotationally fixed to the portion, on the opposite side of the spring mounting rod, of a panel of the door mounting block, and the outer wall of the angle keeping block is slidably connected with the top end of a sliding groove rod; when the sliding groove rod moves in the guide sliding groove, the top end of the sliding groove rod drives the angle keeping block to rotate, and a reset spring is installed between the angle keeping block and the spring installation rod. The angle keeping block and the sliding groove rod used for guiding rail transfer act in a matched mode, under the condition that other components are reduced, the automatic door closing action can be achieved, the overall elastic reset state is well combined with the rail transfer action, the spring stretching amount is reduced, the reset spring is evenly stressed in the automatic door closing process, the door closing action is smoother and quieter, the service life of the spring is prolonged.

The invention discloses a semi-honeycomb steel belt hobbing machine for ensuring a uniform forced convection flow field. The machine comprises a feeder and a discharger, and further comprises two toothed trapezoidal gears having the same number of teeth, wherein the trapezoidal gears are mounted on a driving shaft and a driven shaft respectively; the driving shaft is connected with a spindle of a reducer motor via a coupler; the two trapezoidal gears are mounted in an engaged manner; and a clearance between tooth faces of the trapezoidal gears is the thickness of a steel belt. With the adoption of the technical scheme, the steel belt is extruded into a semi-hexagonal semi-honeycomb steel belt when the steel belt participates in an engagement process by using a gear engagement principle; the dimensional uniformity of the sides of a semi-hexagon is good; tensile deformation of the steel belt is small; production efficiency is high; a fine adjustment mechanism of a driven gear shaft is designed; the problems of excessive extrusion and tension of the steel belt due to fine change in the thickness of a steel sheet are solved by finely adjusting a distance between a driving gear and a driven gear; the problem of great arc distortion of the semi-honeycomb steel belt is solved by finely adjusting the parallelism of the driving gear and the driven gear; and the machine is simple in structure and convenient to use and adjust.