3974 results about "Extrusion" patented technology

The invention discloses a double-PHA barrier system for a paper-based container and a paperboard as well as a preparation method and application of the double-PHA barrier system, and belongs to the technical field of paper-based material surface engineering and green packaging. The system sequentially comprises a paper base material, a water-based PHA dispersion hole sealing layer and a PHA extrusion compact layer from inside to outside. According to the invention, the micron-sized PHA dispersoid without cell debris is utilized, so that an efficient hole sealing effect which is difficult to achieve by a high coating amount in a traditional process can be achieved by only needing an extremely low coating amount, and the pinhole defect of an extrusion layer is eliminated from the source. And in cooperation with the modified PHA extrusion layer with the specific crystallinity, the problem of micro-cracking of a single coating during edge rolling forming is cooperatively solved. According to the system, excellent barrier performance is achieved through a thinner bio-based structure, and meanwhile the system has a wide heat sealing window and excellent repulp recycling performance. Compared with the prior art, on the premise that high performance is guaranteed, the consumption amount of packaging materials and the environmental burden are remarkably reduced.

The invention discloses an electric power distribution method convenient for maintenance. By arranging a second threaded column (21) and an extrusion plate (22), when the second threaded column (21) rotates, the extrusion plate (22) can be driven to rotate, then the extrusion plate (22) can drive a friction pad (27) to rotate, and when the friction pad (27) is connected with the lower surface of the inner wall of a shell (1) in a lap joint mode, a support plate (17) can be fixed; and by arranging a stop block (28), when the back face of a second protection plate (10) is connected with the front face of the stop block (28) in a lap joint mode, a first threaded column (13) can be more conveniently connected with a second threaded sleeve (14), and therefore the second protection plate (10) can be better fixed. The electric power distribution method convenient for maintenance has the advantages that the structure is compact, the design is reasonable, and the practicability is high.

The invention discloses a high-strength modified high-density polyethylene double-wall corrugated pipe and a preparation method thereof, and relates to the technical field of high-density polyethylene double-wall corrugated pipes. The high-strength modified high-density polyethylene double-wall corrugated pipe is prepared from the following components: high-density polyethylene, ultra-high molecular weight polyethylene, reinforcing filler, a compatilizer, an antioxidant and a lubricant. The preparation method comprises the following steps: reinforcing filler surface modification; all the components are subjected to melt blending to prepare the modified composite material; the modified composite material is subjected to extrusion molding to form the double-wall corrugated pipe; and cooling, shaping and cutting. The UHMWPE and the reinforcing filler are introduced, and the compatilizer is combined to improve interface bonding, so that macromolecular chains of the UHMWPE are entangled to form a tough network, the reinforcing filler provides rigid support, and the high-temperature modulus and creep resistance are synergistically improved; high-temperature oxidative degradation is effectively inhibited through the antioxidant, the slow crack growth resistance time is prolonged, and the service life is prolonged.

A silicon carbide source material structure for use in a sublimation system for growing crystalline silicon carbide is provided. The silicon carbide source material structure includes a composite shaped solid. The composite shaped solid may be made by casting, extrusion, 3D printing, graphite conversion, or other suitable process.

The invention relates to the technical field of non-ferrous metal processing, and particularly provides a preparation method of a high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile. The preparation method of the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile comprises the following steps that S1, after alloy raw materials are subjected to smelting treatment and refining treatment, an ingot blank is obtained through casting treatment or spray forming treatment; s2, the ingot blank is subjected to homogenization treatment and extrusion treatment, and an extruded profile is obtained; and S3, the extruded profile is subjected to solid solution quenching treatment and two-stage aging treatment, and the high-strength beryllium-containing Al-Mg-Zn-Cu series aluminum alloy profile is obtained. According to the invention, specific extrusion process parameters are adopted and a two-stage aging heat treatment system is combined, so that the preparation of the low-cost, low-density, high-strength and corrosion-resistant aluminum alloy profile is successfully realized.

The invention relates to a copper cable insulation layer extrusion molding method and system based on dynamic temperature control, and belongs to the technical field of copper cable production. The method comprises the steps that the surface temperature of a copper core before the copper core enters an extrusion die head and the melt temperature of a plurality of independent temperature control sections divided by the extrusion die head in the material advancing direction are obtained in real time; meanwhile, feedback adjusting quantity is calculated based on the temperature difference between the melt temperature and the preset target melt temperature, the feed-forward compensation quantity and the feedback adjusting quantity are superposed to obtain comprehensive adjusting quantity of the heating power of each section, and real-time closed-loop adjustment is conducted on the heating power of each section of the extrusion die head according to the comprehensive adjusting quantity; and the flow and the temperature of the cooling medium are adaptively adjusted according to the temperature gradient of the surface temperature along the axial direction, and non-uniform gradient cooling is carried out on the insulating layer. The copper cable insulation layer extrusion molding method and system based on dynamic temperature control at least solve the problems of poor thickness uniformity of an insulation layer, large internal residual stress and unstable adhesive force with a copper core in the prior art.

The invention particularly relates to an aluminum profile straightening machining method with an aluminum bar as a raw material, and relates to the technical field of aluminum profile machining. Extruding and forming; determining a straightening scheme; and precision detection. According to the method, a whole-process quality control system is constructed from raw material pretreatment to post-treatment storage; the straightening scheme depends on characteristic parameterization to accurately adjust pressure, match pressure maintaining and release stress in a targeted mode, and the problem of stress concentration of the special-shaped section is solved. Precision detection covers multi-dimensional form and location tolerances and defects, and data are fully traced, so that support is provided for quality closed-loop management and control; surface protection and storage are standardized through post-treatment, and performance degradation is prevented; the whole process is coordinated, the straightness, the stress uniformity and the size precision of the aluminum profile are greatly improved, and the requirements of the high-end field for high-quality profiles are met.

The co-extrusion distributor comprises a main machine feeding block, a main machine body and a discharging plate which are sequentially connected, a B material feeding channel is vertically arranged in the main machine feeding block, a composite channel is vertically arranged in the main machine body, an extrusion channel is vertically arranged on the discharging plate, and a B material discharging channel is vertically arranged on the discharging plate. A left core rod mounting hole and a right core rod mounting hole are transversely and inwards formed in the front side face of the main machine body, located in the left side and the right side of the composite channel respectively and communicated with the composite channel, the core rods are inserted into the core rod mounting holes to be mounted, the core rod cover plate is connected to the front side face of the main machine body to axially position the front end face of the core rods, and the front end heads of the core rods penetrate out of the core rod cover plate. Two A material feeding channels are correspondingly arranged in the left area and the right area of the rear side face of the main machine body, A material channels communicated with the A material feeding channels are arranged on the rear end face of the core rod, and tapered grooves for annularly cutting the core rod are formed in the areas, located on the two outer sides of the composite channel, of the core rod. The material A can be compounded on the two side faces of the material B, and the width of the material A can be adjusted in a non-stop and stepless mode.

The invention discloses an inclined extrusion rack of a large-diameter cold-bending hollow section steel extrusion forming device, and belongs to the technical field of cold-bending hollow steel pipe machining. The inclined extrusion rack comprises a rack body, a feeding assembly is arranged on the right side of the rack body, a cut inclined feeding roller is arranged on the feeding assembly, and a working plate is connected to the inner wall of the rack body through bolts; and the lower surface of the working plate is fixedly connected with a lower connecting plate. According to the large-diameter cold-bending hollow profile steel extrusion forming device, in the working process, the rack body is fed through the feeding assembly, machining is completed in the rack body, at the moment, a scraping plate plays a role in scraping welding waste, meanwhile, a motor works, at the moment, a cleaning plate can move in the vertical direction, welding slag can be efficiently cleaned, and the working efficiency is improved. And meanwhile, the cleaning plate moves in the horizontal direction along the workpiece, welding slag can be swept down, the cleaning effect is better, the welding slag is not left, and the working efficiency is high.

The invention relates to the technical field of optical cable preparation, and discloses a high-corrosion-resistance rodent-damage-prevention self-supporting optical cable of a non-metal optical unit, which comprises the following steps of: performing surface activation on the non-metal optical unit to establish a controllable interface premise, and under the strict constraint of the premise, performing surface activation on the non-metal optical unit to obtain a rodent-damage-prevention non-metal optical unit; and setting process parameter windows of subsequent functional interface coating coating and curing, high-modulus rodent-damage-preventing material laying and sheath co-extrusion, and setting a process parameter window of subsequent functional interface coating coating and curing, high-modulus rodent-damage-preventing material laying and sheath co-extrusion. According to the invention, the high-modulus rodent-damage-preventing material laying is carried out in a sheath high-temperature extrusion process, and the high-modulus rodent-damage-preventing material is used as a heat-stable internal skeleton to normalize the flowing process of a molten sheath material; and the sheath material is promoted to form a physically deep coupled composite protection system around the skeleton when being cooled and cured, so that the corrosion resistance and the physical damage resistance are mutually enhanced in the manufacturing link, and the internal protection uniformity and the long-term service reliability of the optical cable are improved.

The invention relates to the field of co-extrusion production control, and particularly discloses an efficient film bag feeding control system, which is applied to a multi-raw-material synchronous conveying device of a co-extrusion process, and comprises a full-link data acquisition module, a full-link data processing module and a full-link data processing module, the raw material characteristic parameters comprise a melting point T, a stacking density rho and a magnetic sensitive particle loading amount M; the instantaneous load pressure P of each raw material conveying channel, the temperature Tm of a co-extrusion die head melting area, the real-time thickness H of a co-extrusion film layer, stock bin liquid level data and motor rotating speed data are collected and integrated to obtain a full-link original data set; the single-drive linkage conveying mechanism comprises a main servo motor, a plurality of sets of electromagnetic clutches and a plurality of sets of spiral conveying assemblies, and the main servo motor drives a transmission shaft through a synchronous belt. According to the technical scheme, for the co-extrusion process, the multi-raw-material synchronous conveying precision can be matched, and the problems that parameter adjustment lags behind, adaptability is poor and a downstream process feedback closed loop is lacked are solved.

The invention relates to the technical field of plastic product processing, and discloses a high-toughness plastic bag processing technology which comprises the following steps: firstly, primarily sorting recycled main raw materials, recording sources, grade classification and processing states, configuring a centralized feeding system and an intelligent proportioning program, and carrying out intelligent proportioning on the main raw materials; the mixed raw materials are injected into a five-layer co-extrusion die head or an annular die head structure, then an extrusion film body is controlled through a control system to conduct film blowing treatment on an extruded film to form film bubbles, then film blowing is conducted, the film bubbles are cooled through a 360-degree cooling air ring and an internal air core, the film obtained after film blowing is completed is pulled to a winding section through a winding system, and then the film is obtained. Before rolling, mechanical performance indexes are detected through an online monitoring instrument, and a finished film roll enters a bag making / slicing section according to order requirements. Through fine treatment and multi-layer co-extrusion process design of recycled plastics, high-proportion recycled materials are effectively applied to production of plastic bags, and the effect of remarkably improving the utilization rate of the recycled materials is achieved on the premise that the performance of finished products is not reduced.

The invention relates to a shielding case progressive die device with a zero-gap bending forming function, the device comprises a lower die assembly, an upper die assembly and a forming bending punch, the side wall of the punch is provided with a shearing edge, and the shearing edge is matched with a lower die to cut off a side edge connecting belt in the bending stroke so as to maintain positioning; the lower die is provided with a shaping groove corresponding to a prefabricated upwarp angle of a product, and when the die is closed to a bottom dead center, the shaping groove and the punch enclose to form a closed extrusion cavity with the volume smaller than that of a material, so that the upwarp angle material is forced to plastically flow and backfill a joint. The method has the advantages that the physical zero gap of the side wall is achieved through the mold closing force, electromagnetic leakage can be blocked without the welding procedure, and the forming precision is high.

The invention belongs to the technical field of research and development of fast neutron reactor jackets and structural materials, and particularly relates to a high-temperature-lead-bismuth-corrosion-resistant high-silicon-content ferrite / martensite steel ladle tube and a preparation method thereof. According to the mass percentage, the composition mainly comprises the following components: 0.16-0.24% of C; 0.4 to 0.8 percent of Mn; cr: 11.6% to 12.4%; 1.2 to 1.8 percent of W; 0.1 to 0.4 percent of Ta; 0.2 to 0.4 percent of V; 1.0%-1.8% of Si and Fe. The preparation method comprises the steps of vacuum induction and vacuum arc remelting. Carrying out homogenization treatment and forging; extruding and annealing; cold rolling and annealing; and performing normalizing and tempering treatment. Through an efficient short-flow process route and reasonable smelting, pipe machining deformation and heat treatment processes, the microscopic structure of the material is remarkably improved, then the mechanical property and high-temperature lead and bismuth corrosion resistance of the finished pipe are improved, and the use requirement of the lead and bismuth cooling fast reactor fuel assembly cladding material under the high-temperature working condition is met.

The invention relates to the technical field of cable manufacturing, in particular to cable insulation sheath extrusion molding equipment which comprises an extrusion device, and the extrusion device comprises an extrusion head and a rotating assembly. The plurality of convex surfaces are uniformly arranged on the outer wall of the extrusion head along the circumferential direction, so that the radial distribution of the molten material in the flow channel is adjusted, and the molten material is guided to supplement gaps among strands of the multi-strand stranded cable. Meanwhile, the extrusion head is driven by the rotating assembly to rotate, so that the convex surface can adapt to the outline of the outer surface of the cable in real time. Therefore, it is ensured that the thickness of the insulating layer is uniform, the surface of the insulating layer is smooth, the phenomenon that materials are excessively gathered towards gaps or are not evenly distributed is avoided, the electrical hidden danger of an over-thin area is eliminated, material waste of an over-thick area is reduced, and the insulating performance and the material utilization rate of the cable are improved.

The utility model discloses hollow half shaft forming equipment, which belongs to the field of manufacturing of automobile parts and comprises a graded reducing device, a hollow half shaft forming device and a hollow half shaft forming device. The spline cold extrusion device is used for extruding an internal spline on the hollow half shaft blank; the grading hole shrinkage device comprises a first hole shrinkage die, a second hole shrinkage die and a third hole shrinkage die, wherein the first hole shrinkage die is used for extruding the shape of a hollow half shaft on a hollow half shaft blank; the second reducing die is used for reducing and forming the hollow half shaft blank output by the first reducing die to a target diameter; the first reducing die, the second reducing die and the cold extrusion spline device are matched, the cold-rolled steel pipe is used as a hollow half shaft blank for multiple times of reducing forming of the hollow half shaft, material consumption can be reduced, and meanwhile the undesirable phenomena of center hole eccentricity, uneven wall thickness and the like when a special-shaped deep hole is machined in a charge bar can be avoided.

The invention relates to the field of hollow blow molding, and discloses extrusion hollow blow molding equipment which comprises a bottom plate, a blow molding structure is arranged on the right side of the upper surface of the bottom plate, vertical plates are fastened to the middles of the front side and the rear side of the bottom plate through bolts, and two sets of forming molds are arranged between the two vertical plates through a first overturning structure. The material taking structure is arranged on the left side of the upper face of the bottom plate, under the action of the driving structure, the first overturning structure is driven to conduct overturning switching on the two sets of molds, in this way, after blow molding is conducted in one set of molds, the other set of molds can be switched in time to continue blow molding, operation is more labor-saving and convenient, and the working efficiency is greatly improved.

The invention relates to the field of metal material testing, in particular to equipment for testing material performance, which comprises a testing platform, the testing platform is provided with a detection mechanism, a supporting mechanism, an extrusion mechanism and a power mechanism, the extrusion mechanism and the power mechanism are arranged on the supporting mechanism, and the extrusion mechanism comprises an extrusion block and a reversing unit for adjusting the orientation change of the extrusion block. At least one end of the extrusion block is open, the extrusion block is used for shearing and crushing a to-be-tested substrate, and a rotating handle is arranged on the extrusion block; and the power mechanism comprises a shearing driving unit and a pressure driving unit which are used for driving the extrusion block to move. By implementing the scheme, the test efficiency of the magnesium alloy material under various test conditions is improved.

The invention relates to the technical field of co-extrusion molding, in particular to a multi-layer co-extrusion molding method of a building composite membrane material, which comprises the following steps: melting and plasticizing a polymer mixture of each layer, and then synchronously co-extruding to obtain a composite tubular melt blank; injecting gas into the composite tubular melt blank and drawing to obtain a composite tubular bubble; judging whether the preparation of the composite tubular vesicle reaches the standard or not according to the vesicle form characterization value; cooling and curing the composite tubular film bubbles reaching the standard to obtain a composite tubular film; when it is judged that the preparation of the composite tubular membrane does not reach the standard according to the circumferential cooling uniformity characterization value, an adjustment strategy when the preparation of the composite tubular membrane does not reach the standard is determined according to the circumferential wind speed extreme value ratio of the cooling wind ring; and flattening and rolling the composite tubular membrane reaching the standard to obtain the composite membrane material for the building. The co-extrusion forming efficiency of the composite membrane material for the building is improved.

The invention discloses an asymmetric extrusion preparation method for a heterogeneous magnesium alloy composite board with an adjustable layer thickness ratio. The method comprises the steps that an asymmetric extrusion die with an extrusion outlet deviating from the center is designed, and an extrusion deformation section is of a triangular section in the thickness direction and of an isosceles trapezoid section in the width direction; a VK41 magnesium alloy, a ZK61 alloy and pure magnesium are machined into blanks with the thicknesses of A, B and C, the blanks are combined according to the EZP sequence after homogenization treatment, the blanks are heated to 350-400 DEG C, heat preservation is conducted, and the extrusion speed is 1-2 mm / s; extruding by adopting an asymmetric die, and placing pure magnesium on the alpha angle side to obtain a three-layer composite board; and carrying out folding or V-shaped bending test on the processed sample. By regulating and controlling the ratio of A: B: C and the extrusion shrinkage angle, accurately controlling the layer thickness ratio, introducing shear strain to improve the texture, coordinating the tension and compression asymmetry and remarkably improving the bending performance, the process is simple, and the method is suitable for industrial production and is suitable for the fields of aerospace, automobiles and the like.

The invention relates to the technical field of part forming machining, and discloses head and flange one-time extrusion forming equipment which comprises an extrusion module. The extrusion module comprises an upper die, a lower die, an upset head die, a driving assembly and a positioning assembly, the upper die and the lower die further comprise positioning inserts, head inserts and forming inserts, and the positioning inserts, the head inserts and the forming inserts are detachably installed on the upper die plate and the lower die plate. The complex process that the flange needs to be upset independently and then the head needs to be upset during machining and manufacturing of a traditional stamping die and a forging machine is avoided, the production process is simplified, and the production efficiency is improved. Products of various specifications and sizes are manufactured by quickly replacing inserts and upset head dies of different specifications, quick remodeling is achieved, automatic feeding is achieved by arranging the feeding module, the feeding module is used for automatically feeding blanks to the extrusion module, and the machining and production efficiency is further improved.

The invention discloses a three-layer co-extrusion plastic film extrusion tape-casting production device which comprises a shell, a film discharging mechanism is arranged on the shell, the discharging end of the film discharging mechanism extends into the shell, a material conveying mechanism is arranged in the shell, a sealing door is hinged to one side of the shell, the material conveying mechanism comprises a transmission cylinder rotationally installed in the shell, and the transmission cylinder is connected with the film discharging mechanism. A transmission cylinder is arranged in the shell, a fan is arranged on one side of the shell, the connecting end of the fan is communicated with the transmission cylinder, evenly-distributed communication holes are formed in the outer wall of the transmission cylinder, a middle limiting roller set is arranged on the shell, a compaction mechanism is arranged in the shell, and an air uniformizing cylinder is arranged in the transmission cylinder and communicated with the fan. The film is stably fixed through negative-pressure adsorption and pressing of the attaching frame, offset stretching in transmission is avoided, meanwhile, negative-pressure airflow makes direct contact with the film, residual heat of a core layer can be rapidly taken away, the film is cooled more thoroughly, shaping is more stable, and the probability of wrinkling and loosening in subsequent rolling is reduced.

The invention belongs to the technical field of reinforced concrete prefabricated concrete structure manufacturing, and particularly relates to a surface galling device for a concrete prefabricated composite floor slab production line. An electric push rod is mounted on the rack, and a mounting rod is mounted on the electric push rod; a sliding ring and an extrusion bag are alternately installed on the installation rod, a napping knife is installed on the sliding ring, the side faces, making contact with each other, of the sliding ring and the extrusion bag are bonded with each other, a flow guide cavity is formed in the installation rod, and an external expansion medium is fed into or discharged out of the extrusion bag through the flow guide cavity; a protruding strip is arranged on the surface of the mounting rod, a sliding groove is formed in the sliding ring, the sliding groove is matched with the protruding strip, and a rubber layer is mounted on the surface of the napping cutter; the device is simple in structure, the distance between the galling cutters is adjusted through expansion of the extrusion bag, and the difficulty and workload of adjusting the distance between the galling cutters are reduced.

This invention provides a multifunctional gradient composite filament for 3D printing, its preparation method, and its applications, relating to the field of additive manufacturing materials technology. The filament's cross-section includes at least two structurally or functionally distinguishable regions, each region composed of a thermoplastic polymer with different chemical properties, or a thermoplastic polymer matrix with the same chemical properties but different functional modifications. These at least two regions are arranged in an ordered spatial pattern on the filament's cross-section using a multi-component co-extrusion technique, enabling pre-design and integration of properties. This invention overcomes the inherent limitations of traditional single-material filaments, achieving multifunctionality and performance designability of a single filament. It significantly improves the interlayer bonding performance of multi-component 3D printing and the comprehensive mechanical properties of the printed composite material. Furthermore, it allows for the production of components with both functional gradients and high mechanical properties in a single printhead operation, making it suitable for mass production.

The invention relates to the technical field of sealing rings, and discloses a wide-temperature-zone sealing ring which comprises a sealing ring body, the sealing ring body comprises a sealing layer, a thin film layer and a compensation layer, the outer portion of the thin film layer is arranged in the sealing layer, and the outer portion of the compensation layer is arranged in the thin film layer; the sealing layer and the thin film layer are supported by different materials and are made of fully-sealed elastic flexible materials, and the thickness of the thin film layer is smaller than that of the sealing layer; the compensation layer and the sealing layer are supported by different materials, and the linear expansion of the materials of the compensation layer and the sealing layer is opposite; the thickness of the compensation layer is inversely proportional to the thickness of the sealing layer according to the linear expansion coefficients of the two materials. The materials of the sealing layer and the compensation layer are selected, so that the compensation layer expands at low temperature to offset lost sealing pressure, the compensation layer shrinks at high temperature to buffer excessive extrusion, uniform contact stress of the sealing ring is maintained in extreme temperature fluctuation, and the effect of zero-damage self-adaptive sealing in the whole temperature range is achieved.

The application discloses a composite material structure bushing reinforcing method based on electromagnetic loading, which uses electromagnetic loading to complete the bushing reinforcement of the composite material structure, and obvious beneficial effects are obtained compared with traditional methods. The method proposes a process parameter calculation method for the reinforcement process of the structure to solve the problem that existing devices and methods cannot be applied to the bushing reinforcement of the composite material structure. The radial compressive stress around the hole is obtained through the Lame formula and the elastic stress-strain relationship of the composite material, and then the total resistance of dynamic extrusion friction in the reinforcement process is obtained through the Coulomb friction theory, and the process parameters are determined in combination with the mathematical model of the electromagnetic force. The application can realize the calculation of the reinforcement process parameters of the composite material bushing with different structures and sizes, and is used for guiding the reinforcement of the dynamic cold extrusion composite material bushing structure.

The invention discloses a high-toughness PPR pipe machining device which comprises an extrusion system, a pulsation mixing system, a melt online monitoring device, a sizing cooling system, a traction device and a winding device. The extrusion system is used for melting and conveying raw materials, and the pulsation mixing system is used for deeply mixing a melt by utilizing a periodic disturbance structure, so that a toughening agent and a copolymerization component are more uniformly dispersed in the melt. The melt on-line monitoring device can detect the temperature, pressure and dispersity of the melt in real time, so that the extrusion process is monitorable. The sizing cooling system adopts a subsection cooling mode of rapid cooling, constant-temperature slow release and low-temperature shaping, and stable shape control is achieved through vacuum sizing. The traction device and the winding device are used for keeping the production rhythm stable and achieving continuous winding of the formed pipe. According to the invention, the melt mixing quality can be improved, the cooling internal stress is reduced, and the toughness and dimensional stability of the PPR pipe are improved.

The invention discloses a recycled modified polypropylene composite material preparation system and a resource recovery method, and relates to the technical field of high polymer material science and engineering. The raw material pretreatment module adopts near infrared spectrum classification, multi-stage cleaning, drying and crushing, and the moisture content is controlled to be less than 0.5%; the melt blending module melts the materials at 180-220 DEG C, modifiers and additives are added, and vacuum degassing is performed to remove impurities; adding a reinforcing agent into the modification reinforcing module, and performing ultrasonic dispersion and dynamic vulcanization; the molding processing module is used for manufacturing a product through extrusion, injection molding or calendaring; the quality detection module is used for detecting mechanical and thermal properties; the waste recovery module is used for crushing and melting granulation to realize a closed loop; the intelligent control module uses a PLC to coordinate each module. Integrated treatment of waste polypropylene is achieved, the purity of raw materials and the performance of a composite material are improved, the resource utilization rate is increased through closed-loop recycling, manual intervention is reduced through intelligent control, product stability is guaranteed, economic and environment-friendly benefits are achieved, and high-valued circulation of waste plastic is promoted.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

The invention relates to a PTFE extrusion model prediction control method and system based on a time convolution network. The method comprises the steps of collecting multi-dimensional time sequence data of an operation variable, a state variable and a controlled variable of a pushing production line in real time; performing data preprocessing; constructing a supervised learning sample by adopting a sliding time window; training the time convolution network; constructing a cost function, and setting constraint conditions; acquiring the actual die orifice outer diameter, the traction speed, the pushing speed and the pushing pressure at the current moment, and inputting the actual die orifice outer diameter, the traction speed, the pushing speed and the pushing pressure into the trained time convolutional network to obtain a prediction result of the future die orifice outer diameter; based on the prediction result, solving the cost function to obtain an optimal control sequence used for offsetting the die orifice outer diameter deviation caused by abnormal fluctuation of the pushing pressure; real-time data are collected again, the prediction and optimization process is repeated, and rolling prediction and optimization control are achieved. The problem that the outer diameter is out of tolerance due to fluctuation of raw materials is solved, and unmanned and intelligent production is achieved.