35results about How to "Avoid slack" patented technology

This invention relates to the field of crop harvesting technology and discloses an anti-clogging header for a corn harvester, including a mounting frame. One end of the mounting frame has a discharge port on its outer surface, and a rotating guide rod is installed inside the mounting frame, with both ends of the guide rod penetrating the outer surface of the mounting frame. This anti-clogging header for a corn harvester utilizes a linkage transmission system consisting of a linkage chain, driven gear, central gear, material removal gear, material feeding gear, dynamic gear, and transmission belt to efficiently transmit power from the guide rod to various functional components below the header. A spring support rod is installed between the material feeding sprocket and the dynamic gear to apply dynamic tension to the transmission belt, effectively preventing slippage and slackness of the belt due to material entanglement or impact, ensuring transmission reliability, and enabling the orderly movement, guidance, and crushing of fed stalks, husks, and other materials, preventing their accumulation and entanglement in critical areas.

The utility model discloses a kind of optical fiber sensing formula light-curing lamp of deformability, it is related to medical instrument technical field, including handle, the outer surface of handle is fixedly installed with lamp pole, the outer surface of handle is fixedly installed with display screen, the side of handle away from lamp pole is fixedly installed with charging end;The inside of lamp pole is provided with the adjusting mechanism of angle convenient to adjust, the adjusting mechanism includes the optical fiber light guide stick of deformability, the optical fiber light guide stick is movably installed in the outer surface of lamp pole.The optical fiber sensing formula light-curing lamp of deformability, angle adjustment is carried out by control switch groove silk drive optical fiber light guide stick, and optical fiber light guide stick is installed with sensor, the distance between real-time sensing and oral cavity interior photosensitive resin is facilitated, to provide position reference for medical staff, and angle adjustment is carried out by the optical fiber light guide stick of deformability, more accurate irradiation to oral cavity interior is realized, reduce the operation time of doctor, guarantee the solidification effect to photosensitive resin.

The utility model provides a kind of civil aircraft suitcase hinge, comprising: rocker arm and base, rocker arm below is provided with mounting hole and camshaft, base below is rotatably installed with threaded adjusting shaft, another end of threaded adjusting shaft is rotatably installed in the middle of camshaft, the middle part of base is fixedly installed by rocker arm pivot through mounting hole, rocker arm forms four-bar linkage by camshaft and connecting rod, limiting block is integrated in base, set the minimum opening angle of case door.The hinge system of the utility model is through the innovative "axial compression+radial decoupling" design concept, combined with modular adjustable structure, while ensuring high reliability, realizes the accurate control of case door movement and the convenience of installation and maintenance, breaks through the technical bottleneck that aviation level hinge high reliability and small size are difficult to be compatible, has been successfully applied to multiple civil aircraft luggage compartment system, and has the technical versatility of extending to spacecraft hatch mechanism.

The utility model discloses a wide wall paper winding device relates to mechanical engineering technical field, the utility model discloses a base, the base top fixedly connected with the object table, be provided with the flattening mechanism on the object table, be provided with the adjusting mechanism on the object table, the flattening mechanism includes the connecting shell fixedly connected in the object table top, the utility model discloses a moving block has been set, and the thickness of wall paper self will slightly push up gyro wheel no.

The utility model discloses a kind of tank uniform shaking devices, including rack, at least two groups of parallelly arranged rotating shaft assembly, transmission sprocket, drive assembly and idler sprocket. Rotating shaft assembly includes shaft and at least two adjustable wheel diameters adjusting wheel of sleeve set in the outer periphery of shaft, by locking bolt fixed and spacing adjustable;Transmission sprocket is positioned by way of key and is axially fixed using locking bolt, and different specifications can be quickly replaced to adjust transmission ratio;Drive assembly is driven by chain, cooperates idler sprocket and symmetrically arranged double-tension sprocket to realize chain stable tensioning, and idler sprocket height is adjustable to enhance tensioning force;Shaft both ends adjusting wheel is equipped with anti-slip retaining edge, rack bottom is equipped with universal caster and threaded lifting foot cup;The device has high universality, and different specifications tank is adapted by adjusting wheel diameter and spacing, transmission sprocket replacement realizes speed regulation, and double-tension structure ensures transmission stability, solves chain slack problem, and is suitable for the efficient mixing demand of multi-specification tank.

The utility model relates to textile pipe winding technology field, and disclose a kind of conical textile pipe winding, including pipe winding body, the bottom surface of pipe winding body is fixedly arranged with lower reinforcing ring, the top surface of pipe winding body is fixedly arranged with upper reinforcing ring, the inner wall of pipe winding body is equipped with cavity, the inside of cavity is fixedly arranged with reinforcing rib, the surface of pipe winding body is fixedly arranged with antiskid layer, the surface of antiskid layer is coated with composite coating group, the surface of pipe winding body is equipped with spiral heat dissipation channel, the top of pipe winding body is clamped with top cover, and the inside one side of top cover is fixedly installed with tensioning assembly. The conical textile pipe winding, by the setting of composite coating group, antiskid layer and nanometer ceramic particle coating can increase the friction between yarn and pipe winding body, and it is not easy to slip off when winding yarn, and the winding of yarn is facilitated, ultra-thin carbon nanotube coating can eliminate static electricity, avoid the static electricity accumulation generated by friction when high-speed winding yarn.

The utility model discloses an auxiliary material pasting device, including frame, pasting material mechanism, feed mechanism and control system, pasting material mechanism, movable and located frame top, feed mechanism, located pasting material mechanism one side, and feed mechanism includes the material disc subassembly of coiling adhesive tape, conveying assembly and the tear glue platform of horizontal setting, and the adhesive tape is pasted with a plurality of auxiliary materials, control system electric connection pasting material mechanism and feed mechanism, feed mechanism still includes electric connection in control system's auxiliary material detection subassembly, and auxiliary material detection subassembly is located tear glue platform close to pasting material mechanism one side, the utility model discloses setting up pasting material mechanism and feed mechanism, wherein feed mechanism includes conveying assembly and auxiliary material detection subassembly, auxiliary material detection subassembly detects auxiliary material, and the control of cooperation control system can drive pasting material mechanism accurate material taking, and conveying assembly controls adhesive tape rewinding simultaneously, and pasting material mechanism intercoordinates, and the auxiliary material is taken off from adhesive tape easily, and tear glue material taking efficiency is improved.

The utility model provides a kind of water conservancy pipeline pipe clamp, including seat, clamping body, the top of the seat is fixedly connected with clamping body, the clamping body is arc, the end of the clamping body is upturned, the end of the clamping body is movably connected with clamping arm, screw rod is passed in the seat, the end of the screw rod is fixedly connected with screw head, the screw head is equipped with perforation, the end of the screw head two sides is equipped with recess, the side of the end of clamping arm abuts with end, the end is threadedly connected with screw rod.The utility model has the advantages that new water conservancy pipeline clamp structure is designed, after clamping body, clamping arm, seat enclose pipeline, install end and screw rod structure, tighten screw head, the screw head is equipped with perforation, the end of the screw head two sides is equipped with recess, more convenient manual gripping, the design of recess, increase the friction when hand operation, prevent dropping, more easily tighten screw head and thus tighten pipeline;Ensure the stability and safety of tightening action.

This invention discloses a gradient crosslinked nanocomposite antifouling reverse osmosis membrane and its preparation method. The reverse osmosis membrane includes a base membrane and a low-crosslinked loose layer and a high-crosslinked dense layer sequentially formed on the surface of the base membrane. The low-crosslinked loose layer is formed by crosslinking polyvinyl alcohol nanofibers and sulfonated carbon nanotubes. The high-crosslinked dense layer is formed by interfacial polymerization of acyl chloride monomers and aromatic amine monomers, and a hydrophilic metal-organic framework material is also embedded in the high-crosslinked dense layer. This reverse osmosis membrane of the present invention adopts a gradient crosslinking to construct a gradient structure of "highly crosslinked and dense surface layer + low-crosslinked and loose sublayer". The introduction of metal-organic frameworks to construct a highly crosslinked and dense surface layer can effectively improve the desalination rate, and the metal-organic framework has antibacterial activity and can inhibit biofouling. The loose polyvinyl alcohol nanofiber network and sulfonated carbon nanotubes in the sublayer can effectively promote the rapid flow of water, and the polyvinyl alcohol nanofiber network is connected to the polyamide matrix through hydrogen bonds, which is stable and efficient.

This utility model discloses a synchronous belt-driven, stop-and-go retractable screen window, including a left guide rail and a right guide rail. Pulley assemblies are slidably connected to the surfaces of both the left and right guide rails. A synchronous toothed belt is fitted and meshed on the outer surfaces of a first gear, a second gear, and a third gear, and the synchronous toothed belt is fixedly engaged with the lower end of the pulley assembly. A retractable assembly is driven by the rotating ends of the two first gears. A drum is fixedly fitted on the outer surface of the retractable assembly, and a screen is fixedly connected to the outer surface of the drum. A handle is fixedly connected to the end of the screen. By turning the handle, the synchronous toothed belt can be rotated. The rotation of the synchronous toothed belt drives the first, second, and third gears to rotate. The first gear and the retractable assembly drive the drum to rotate. By pulling the end of the screen with the handle, the screen can be retracted and unfolded. The handle can be controlled to stop at any position, providing convenience for the screen window to be unfolded to any size.

This utility model relates to the field of fiber twisting technology, specifically a PET fiber twisting device, including a frame, a drive mechanism and a base fixedly mounted on the frame, a twisting mechanism rotatably mounted on the base, the twisting mechanism including a steel ring and a mandrel, the steel ring fixedly connected to the base, a twisting ring slidably mounted on the steel ring, the mandrel fixedly mounted on the drive mechanism, the mandrel rotatably connected to the base, a yarn bobbin sleeved on the mandrel, the inner wall of the yarn bobbin having several protrusions fixedly connected in an annular shape at equal intervals, the protrusions engaging with the mandrel; by engaging the protrusions with the yarn bobbin, it is ensured that the yarn bobbin rotates synchronously with the mandrel, avoiding slippage causing interruption of material supply; the steel ring provides a stable sliding track for the twisting ring, and together with the rotational power of the mandrel, ensures that the twisting ring is always subjected to uniform torsional force during the twisting process, avoiding local undertwist or overtwist due to trajectory deviation.

This utility model provides a self-tapping screw, relating to the field of self-tapping screws, comprising: a locking cap and a screw head. A screw shank is connected to the lower end of the screw head, and the surface of the screw shank has threads. The upper end of the locking cap has a relief groove and a through hole, and the lower side of the relief groove has an adapter groove. The through hole is located outside the relief groove, and a bolt and a nut are installed in the through hole. The bolt is connected inside the nut, and the lower end of the bolt is connected to a positioning post. The screw head is rotatably connected inside the adapter groove, and the upper end of the screw head has an internal hexagonal slot, and the bottom of the internal hexagonal slot has a Phillips head slot. This utility model facilitates the disassembly of the self-tapping screw itself and provides an installation method compatible with two different tools.

This utility model provides a wire tensioning structure for a stone cutting machine, including a frame, a plurality of transition rollers respectively disposed around the frame, a top wire mechanism disposed at the upper end of the frame, a tensioning roller disposed on the frame, a rotating mechanism disposed between each of the transition rollers and the tensioning roller for driving each transition roller and the tensioning roller to rotate together, and a cutting wire disposed between each of the transition rollers, the tensioning roller and the top wire mechanism for tensioning the cutting wire, and further including a tensioning roller disposed on the frame, and an auxiliary tensioning mechanism disposed between the tensioning roller and the frame for driving the tensioning roller to move to increase or decrease the tension of the cutting wire on the transition rollers, the top wire mechanism and the tensioning roller.

This invention discloses a ramie re-peeling device, relating to the field of agricultural machinery, comprising a pulling assembly and a re-peeling assembly. The re-peeling assembly includes a support member installed on one side of the initial end of the pulling assembly, a longitudinal locking mechanism for securing the ramie to the support member, and a re-peeling blade assembly installed on the longitudinal locking mechanism. The re-peeling blade assembly has a standby state and a re-peeling state. In the standby state, the longitudinal locking mechanism is open, and the re-peeling blade assembly is away from the support member. In the re-peeling state, the longitudinal locking mechanism is closed, and the re-peeling blade assembly is close to the surface of the support member and clamps the ramie, with an obtuse angle between the re-peeling blade assembly and the surface of the support member. This invention solves the problems of low peeling efficiency, high labor intensity for operators, and easy injury to workers' hands caused by existing ramie peeling methods.

This utility model discloses a PE cover film hot pressing lamination device, including a base plate, a vertical plate and a fixed plate fixedly connected to the top of the base plate, a heating box and a cooler fixedly installed between the vertical plate and the fixed plate and located at the top of the base plate, a substrate hanging plate and a PE film hanging plate fixedly connected to one side of the vertical plate, and material rollers are provided inside the substrate hanging plate and the PE film hanging plate, respectively. A through groove is opened inside the vertical plate, and guide rollers are rotatably connected to both sides of the through groove and located on one side of the vertical plate. A movable plate is slidably connected to the top of the base plate, and a displacement component is provided inside the base plate. This utility model uses an electric cylinder-driven lamination pressure roller and an auxiliary roller to work together to dynamically adjust the pressing gap and pressure, adapting to substrates and PE films of different thicknesses, ensuring tight lamination without air bubbles; combined with the segmented temperature control of the heating plate and hot pressing roller, it realizes integrated processing of softening, pressing and pre-curing, providing a uniform and stable semi-finished product for subsequent cooling and shaping.

The utility model discloses an on-line non-stop convenient terminal feeding mechanism, which comprises a feeding assembly, a terminal crimping machine is arranged on one side of the feeding assembly, a wire clamp assembly is arranged on the opposite side of the terminal crimping machine, the feeding assembly comprises a winding module, a guide module and a moving module, the guide module is connected with the moving module, and the wire clamp assembly is connected with the winding module. The winding module is installed on the bottom face of the workbench and comprises a terminal disc, a material belt paper winder and a terminal disc supporting arm, the terminal disc is used for collecting wound terminal material belts and is rotationally connected with one end of the terminal disc supporting arm, and the material belt paper winder is used for driving the terminal disc to rotate and enabling the terminal material belts to be wound out to the guiding module; the moving module comprises a rodless cylinder, a reset tension spring and a first guide rail, the rodless cylinder is used for driving the guide module to perform synchronous displacement adjustment along with the terminal crimping machine, the reset tension spring is used for providing tension to assist the guide module in resetting, and the first guide rail is slidably connected with the guide module.

The utility model discloses a kind of tensioning structure for inductance coil winding device, including support table: the top of support table is fixedly connected with two support plates by bolt, the side of two described support plates is fixedly connected with hollow support groove by bolt, the inner chamber of hollow support groove is slidably connected with rectangular plate, rotatingly connected with round bar between two described support plates, the front and rear ends of round bar are fixedly connected with driving gear, the surface of the front and rear ends of round bar is fixedly connected with driven gear, the utility model is slid by driving cylinder to push rack, and then make rack rotate by driving gear and round bar drive driven gear, in turn make rectangular plate in the inner chamber of hollow support groove slide upwards, in turn make the tensioning force of wire on the surface of round roller upwards, that is, it can reach to wire and be tensioned to support, so that wire can avoid relaxation in the process of winding.

The utility model relates to needle type insulator technical field discloses a kind of composite needle type insulators, comprising: upper support, including the semicircular groove of top and the curve concave surface of both sides, for passing through and supporting cable, wherein, the curve concave surface surface is provided with self-locking tooth arc;Base structure, installation in the bottom of upper support, and the bottom of base structure is equipped with lower skirt structure;Clamp jaw structure, after cable passes through semicircular groove, clamp jaw structure is engaged with self-locking tooth arc by its elasticity, provides clamping pressure to cable.The utility model is provided with clamp jaw structure and self-locking tooth arc, when using, semicircular groove provides stable through path for cable, avoid slack or breakage due to unstable support, and the self-locking tooth arc of curve concave surface cooperates with clamp jaw structure, and self-locking effect is formed by mechanical engagement, prevent cable from falling off due to vibration or external force, significantly improve short-circuit resistance.

The utility model relates to weft tension ware technical field, propose a kind of weft tension ware, including bottom plate, still including tensioning mechanism, quick-release mechanism, locking assembly and reinforcing mechanism, the tensioning mechanism is installed on the bottom plate, the quick-release mechanism is installed on the bottom plate, the quick-release mechanism is matched with the tensioning mechanism, for replacing wax column, wherein, the quick-release mechanism includes locking assembly, the reinforcing mechanism is installed on the bottom plate, for processing wiring harness, by above technical scheme, the stability of tension ware in the prior art using friction mode is greatly influenced by outside, the abrasion of friction component can lead to unstable friction, in turn make weft tension fluctuation, for example, after long-term use wax column surface abrasion, the friction coefficient with weft changes, possibly lead to tension big or small, affect the uniformity of fabric, and the problem that maintenance and replacement tension ware increase downtime and maintenance cost.

The application discloses a kind of semiconductor material winding equipment, including base, first vertical plate, second vertical plate, winding roller, getter device, multiple auxiliary compression devices, first driving device and second driving device, wherein, first vertical plate and second vertical plate vertically and side by side fixedly arranged on base, and first vertical plate is detachably provided with gate;Winding roller rotationally arranged between second vertical plate and gate, and one end of winding roller penetrates out of second vertical plate and extends to outside, the other end of winding roller is connected with gate, channel is provided in winding roller, and a row of through holes are provided in winding roller and communicated with channel.

This utility model belongs to the field of medical devices and discloses a skin test result detection device, including a housing; a take-up roller is rotatably connected to the housing; a measuring tape is wound around the peripheral wall of the take-up roller, one end of the measuring tape is fixed to the peripheral wall of the take-up roller, and the other end of the measuring tape is fixed to a lifting roller placed coaxially with the take-up roller; the measuring tape is made of a transparent flexible material, and the measuring tape has a first scale line and a second scale line that are perpendicular to each other; the first scale line is arranged along the extension direction of the measuring tape; there are multiple second scale lines, all of which are placed coaxially with the lifting roller; the measuring tape in a loose state is tightened so that the measuring tape near the skin test site is in close contact with the limb skin, and the longitudinal diameter of the skin test reaction is measured through the first scale line, and the transverse width is measured through the evenly distributed second scale lines, realizing bidirectional accurate measurement and improving the measurement accuracy of skin test results on the curved surface of the limb.

This invention discloses a nonwoven fabric production equipment with multiple pressing functions, relating to the field of nonwoven fabric hot pressing technology. It includes an equipment mounting plate, at least two sets of feeding components, a number of correction components equal to the number of feeding components, a hot press, a base, a pair of receiving components, and receiving rollers. The equipment mounting plate and base are located on both sides of the hot press. At least two sets of feeding components and correction components are mounted on the equipment mounting plate. The correction components are located on the side of the equipment mounting plate closest to the hot press. A pair of receiving components are symmetrically mounted on both sides of the base. Each set of receiving components includes a conical top, and the receiving rollers are located between the pair of conical tops. The operator places the nonwoven fabric raw material onto the sleeve of each feeding component, then passes the nonwoven fabric through the two drum-shaped rollers of the corresponding correction component, pressing the nonwoven fabric into the hot press. Finally, the end of the nonwoven fabric is fixed to the receiving rollers, and the production equipment is started to hot press the nonwoven fabric.

This invention relates to the field of polymer materials technology and discloses a method for manufacturing high far-infrared emission therapeutic glasses. The method includes: performing double-layer surface modification on far-infrared negative ion functional powder to obtain modified functional powder compatible with a polymer matrix; pre-dispersing and melt-blending the modified functional powder with a polymer matrix material in steps to obtain a blend; forming a functional powder enrichment region on the surface of the glasses by injection molding and applying a segmented electric field; polarizing the region based on the thickness of the enrichment region using a formula to determine the polarization electric field strength; and simultaneously performing radiation crosslinking treatment to anchor the crosslinked network to an oriented structure. This invention solves the technical problems of uneven functional powder dispersion and poor electret stability, achieving a synergistic effect of surface functional enrichment and long-lasting electret effect. The prepared glasses have durable and stable far-infrared emission and negative ion therapeutic functions.

The utility model discloses a kind of quick winding device for motor manufacturing, it is related to motor manufacturing technical field, including device seat, the lower side of device seat is fixedly installed with sliding plate, the movable seat of left and right sliding is sleeved on sliding plate, the inside of movable seat is rotatably connected with the one side of device seat with rotating seat, the upper side of device seat is fixedly installed with slide, the upper side of slide is provided with the movable seat of left and right sliding, rotating plate is rotatably connected with one side of movable seat, and torsion spring is arranged at the rotary joint of rotating plate.The utility model is accurate fixed mechanism and automatic adjustment mechanism, ensure the stability and accuracy of iron core in winding process, utilize the screw thread connection of rotating seat and clamping block to realize the uniform clamping of iron core, prevent loosening or displacement, adjustable clamping system and stud can handle different size iron core, keep the proper tension and stable wire of wire rod, avoid slack or knot, in combination with the cooperation of rotating seat rotation and motor control device, ensure the efficiency and high accuracy of winding process.

The application discloses a kind of vehicle safety payment systems and car, vehicle safety payment system is carried on car, vehicle safety payment system includes order management module, identity authentication module and secure transmission module.The application can be executed by the module of car-mounted order information acquisition, the identity authentication of specific trusted on-board personnel, payment authorization credential generation and other processes, so as to ensure the premise of property safety, trigger payment platform to execute payment or transfer according to order information, without on-board personnel distraction from driving process to operate user terminal in the payment process, on-board personnel can focus on driving operation, can fully guarantee traffic safety, and by vehicle safety payment system, strict standard verification and authentication process of order information are automatically completed, avoid the lax caused by on-board personnel due to driving, so as to guarantee payment security.The application is widely used in the field of automobile technology.

The invention provides a flexible photovoltaic support control method and system, and belongs to the field of photovoltaic support control, and the photovoltaic support system comprises a control device, a wind measurement device, a self-locking device, a force measurement device, a rope and a flexible photovoltaic support. The control method is applied to the control device and comprises the steps that different wind speed control instructions are generated according to the size relation between the environment wind speed and a wind speed preset threshold value, and the different wind speed control instructions are used for controlling a self-locking device to be in a rope pulling state or a rope loosening state; different cable force control instructions are generated according to the size relation between the cable force of the rope and a cable force preset threshold value, and the different cable force control instructions are used for controlling the self-locking device to be in a rope pulling pause state or a rope loosening pause state. According to the flexible photovoltaic support control method and system provided by the invention, the photovoltaic power generation stability and the photovoltaic power generation efficiency can be improved.

The utility model discloses an automatic material discharging machine, including bottom plate, vertical board, press bar, the steering lever of area rolling cylinder, film support rod, film placing rod and contain motor and the winding assembly of winding rod. Vertical board is vertically arranged in bottom plate both sides, and film placing rod is used for placing film roll, and a plurality of press bars are evenly and equidistantly arranged between two vertical boards near bottom plate, and the steering lever is located in the oblique upper side of specific press bar, and the winding assembly is driven by motor. When using, the film is in turn set each part, and the foam glue with aluminum bowl is threaded through the press bar, and the motor drives the winding assembly to drive the film, so that the aluminum bowl and the foam glue are automatically separated and discharged. The equipment improves the material discharging automation and stability, reduces the artificial and material loss, and the structure is reasonable and easy to maintain.

The application provides a manufacturing process of fluoroplastic products, and belongs to the technical field of plastic product production, and comprises the following steps: S1, adopting a polytetrafluoroethylene film belt to be wound outside a cylinder mold and to form a polytetrafluoroethylene layer with a certain thickness; S2, adopting a fusible polytetrafluoroethylene film belt to be wound outside the polytetrafluoroethylene layer and to form a fusible polytetrafluoroethylene layer with a certain thickness, which is used to form a barrier layer with the polytetrafluoroethylene layer after sintering, so as to improve the permeation resistance; the application can make the metal mesh sleeve extrude the fusible polytetrafluoroethylene layer after melting, and further make the metal ring radially contract to extrude the fusible polytetrafluoroethylene layer, so that the fusible polytetrafluoroethylene layer further flows to the polytetrafluoroethylene layer and the mesh pores of the metal mesh sleeve to be filled, and the compactness and the bonding strength are enhanced, and especially the negative pressure resistance, the permeation resistance and the adverse effects of thermal expansion and cold shrinkage of the lining layer are enhanced.

The application discloses a kind of super-soft high-elasticity hot melt films with skin-friendly, it relates to hot melt film technical field, the super-soft high-elasticity hot melt film with skin-friendly, raw material is by weight percentage, including as follows component: SBC class (SEBS, SEPS, SIS, SBS) elastomer: 45%-75%;TPU: 20%-35%;Compatibility agent (maleic anhydride grafting SIS / SBS class): 2%-10%;Paraffin oil or naphthenic oil: 2%-5%;Tackifying resin (carbon 5 or carbon 9): 1%-5%;Antioxidant: 0-0.5%;Ultraviolet absorber 0-0.5%, solve the current market commonly used female sports underwear hot melt film elastic band rebound is not good, not soft enough and without skin feeling, skin quality, Q feeling problem.The hot melt film of the application has high tensile rebound elasticity, super-soft, strong skin feeling, good Q elasticity;The hot melt film of the application is used for the lamination of sports underwear fabric, has good bonding strength, washability, service lamination, the application has high tensile rebound elasticity, so that underwear hot melt film has good tensile rebound performance.

This utility model discloses a backflow prevention safety protection device for oil production systems, relating to the technical field of oil production systems. It includes: an active component, a driven component, and a backflow prevention assembly. The active component has a cavity. The backflow prevention assembly is installed within the cavity. One end of the driven component is installed within the cavity. The backflow prevention assembly includes: two swing blocks, two springs, and two friction plates. The two swing blocks are rotatably connected to the active component. The two ends of the two springs are fixedly connected to the two swing blocks. The two friction plates are fixedly installed on the outer arc surfaces of the two swing blocks. Under the action of the backflow prevention assembly, when the motor drives the active component to rotate, the two swing blocks, under the action of centrifugal force, stretch the two springs, causing the friction plates to contact the friction rings. Under the action of friction, the driven component begins to rotate synchronously with the active component. When the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the protection device.