93 results about "Co extrusion" patented technology

The invention provides an anti-static knitted fabric based on charge gathering and directional guiding, a preparation method of the anti-static knitted fabric and a knitted fabric, and belongs to the technical field of knitted clothes. A first spinning component and a second spinning component are co-extruded through melt spinning to prepare composite fibers with a parallel composite structure, and the composite fibers are subjected to thermal mechanical treatment to obtain the composite yarn; the composite yarn is directionally introduced into a specific area of the fabric in a tuck-float stitch mode through an embedded weaving technology, and latent curl is activated through after-treatment. The moisture absorption expansion of the second spinning component is utilized to drive the composite yarn to macroscopically self-crimp, and the conductive filler inside is physically extruded to construct an efficient conductive skeleton, so that the humidity response adjustment and charge directional dispersion of the anti-static performance are realized, and the problems of fixed conductive state, local static accumulation and poor comfort of the existing fabric are effectively solved; and the safety and wearing experience of the clothes are improved.

The invention discloses a cable with a co-extrusion self-foaming ceramic fireproof layer and a preparation method of the cable, and belongs to the technical field of polyolefin cables. The cable comprises a conductor, an insulating layer and a fireproof layer from inside to outside, comprising the following raw materials: 40-60 parts of an ethylene-vinyl acetate copolymer, 20-40 parts of a polyolefin elastomer, 20-30 parts of a ceramic precursor filler, 5-10 parts of a compatilizer, 5-10 parts of a cosolvent, 3-5 parts of a flexibilizer, 2-4 parts of a main foaming agent, 1-2 parts of an auxiliary foaming agent, 1-3 parts of a lubricant and 0.5-1.5 parts of an antioxidant. The compatilizer is siloxane containing sulfydryl and phosphaphenanthrene groups, and the flexibilizer is silane coupling agent modified quartz fibers containing double bonds. In a matrix of the ethylene-vinyl acetate copolymer and the polyolefin elastomer, the compatilizer and the flexibilizer are added, so that the fireproof layer is endowed with better impact resistance and flame retardance.

A pile is comprised of a pipe, i.e., a hollow tube or hollow cylinder, with a coextensive internal reinforcement comprised of a plurality of intersecting walls. The pile is comprised of a blend of a thermoplastic and 20 to 50% (pbw) pelletized chopped strand glass fibers. The outer surface includes a co-extruded cap stock that is relatively smooth and exhibits a relatively low coefficient of friction. Internal walls define a central channel useful for water jetting, and peripheral channels useful for electrical, plumbing and mechanical lines. The internal structures exhibit roughness, bumpiness and a relatively high coefficient of friction for an extruded plastic. A groove may be formed in the pile adjacent to an end for resistance to uplift.

The manufacturing process of the conventional tape is complicated, which leads to energy waste and an increase in manufacturing cost.SOLUTION: The present invention discloses an apparatus and a method for manufacturing a tape. The equipment for manufacturing the tape includes a base film forming section, an adhesive film forming section, a co-extrusion section, and a stretching section. The base film-forming portion thermally melts the substrate to form a base film. The adhesive film forming portion thermally melts the adhesive material to form a pressure sensitive adhesive film. The co-extrusion section is respectively connected to the base film forming section and the adhesive film forming section, and the base film and the pressure sensitive adhesive film enter the co-extrusion section to perform a co-extrusion manufacturing process, thereby obtaining a co-extruded film having the base film and the pressure sensitive adhesive film. The stretching section performs a stretching process on the co-extruded film.SELECTED DRAWING: Figure 1

The invention discloses a preparation method of a corrosion-resistant composite cable conductor, and relates to the technical field of alloy cables, and the preparation method comprises the following steps: carrying out smelting, refining, casting, annealing, extrusion and aging treatment on a high-purity aluminum matrix and an intermediate alloy containing a conductivity improving element to obtain an aluminum alloy conductor mixture; the preparation method comprises the following steps: burdening and mixing reinforced fibers, a polymer matrix, an interface reinforcing agent and a nano filler to prepare a creep-resistant reinforced mixture; the aluminum alloy conductor mixture and the creep-resistant reinforced mixture are subjected to a co-extrusion process to prepare the composite cable; a polymer matrix, an interface reinforcing agent, a functional filler and a plasticizer are blended and mixed, and a corrosion-resistant protective layer is prepared outside the composite cable through surface activation and secondary extrusion processes. Through the composite structure of the creep-resistant reinforcing layer and the aluminum alloy conductor, the creep-resistant capability of the cable is remarkably improved; and the corrosion-resistant protection layer is tightly combined with the composite cable, so that the cable is suitable for a humid or salt-fog environment.

The present disclosure relates to physically crosslinked closed cell continuous multilayer foam structures comprising at least one foamed polypropylene / polyethylene layer having a TPU overlay. A multilayer structure comprising at least one layer of a foam composition and at least one layer of a cover composition may be co-extruded, the co-extruded structure is irradiated with ionizing radiation, and the irradiated structure is continuously foamed.

The invention discloses an ultra-silence HDPE pipe for building drainage and a preparation method thereof.The HDPE pipe is formed by co-extruding and compounding an inner layer, a middle silence layer and an outer layer, and the inner layer and the outer layer are each prepared from HDPE, an antioxidant, a lubricating agent and pigment according to a certain proportion; the middle mute layer is prepared from HDPE (high-density polyethylene), modified mica powder, Expancel pre-expanded microspheres, maleic anhydride grafted polyethylene, an elastomer, a lubricant and an antioxidant according to a certain ratio. The preparation method of the HDPE pipe comprises the following steps: adding the inner-layer mixture into a first extruder for melt extrusion, adding the middle mute layer mixture into a second extruder for melt extrusion, adding the outer-layer mixture into a third extruder for melt extrusion, then carrying out co-extrusion molding through a co-extrusion mold, and then carrying out cooling shaping, thus obtaining the HDPE pipe. The ultra-silence HDPE pipe for building drainage is obtained. The HDPE pipe provided by the invention has good mute performance, high temperature resistance and toughness, and other performances meet the requirements.

The application relates to the technical field of composite films, and particularly discloses an aluminum-plastic composite film and a preparation method thereof. The aluminum-plastic composite film comprises, from outside to inside, an outer barrier layer, a first adhesive layer, a barrier layer, a second adhesive layer, a protective layer and a heat-sealing layer; the protective layer comprises 100 parts of ternary random copolymerized polypropylene, 5-8 parts of a compatilizer, 10-25 parts of modified fillers and 1-5 parts of a nucleating agent; the modified fillers are fluorine-containing micro-powder and silicon powder treated by a silane coupling agent; and the preparation method comprises the following steps: mixing the ternary random copolymerized polypropylene, the compatilizer, the modified fillers and the nucleating agent, and then melt co-extruding to obtain the protective layer; and then, from outside to inside, the outer barrier layer, the first adhesive layer, the barrier layer, the second adhesive layer, the protective layer and the heat-sealing layer are compounded to obtain the aluminum-plastic composite film. The protective layer has good corrosion resistance, the electrolyte permeated by the heat-sealing layer continues to permeate into the second adhesive layer, and the electrolyte resistance of the aluminum-plastic composite film is improved.

The present invention relates to a thermoplastic resin composition and an exterior material including the same. More particularly, the present invention has an effect of providing a thermoplastic resin composition having even and low gloss while maintaining mechanical properties and processability equal or superior to those of a conventional ASA resin; having natural coloring through control for a uniform refractive index; and being capable of reducing appearance defects due to excellent co-extrusion processability with PVC and an exterior material including the thermoplastic resin.

A method for co-extruding a pressure-sensitive adhesive and a thermoplastic elastomer is disclosed. This method may include an adhesive transfer process, a thermoplastic elastomer transfer process, and a dispensing head. The dispensing head may further include channels in which the pressure-sensitive adhesive and the thermoplastic elastomer contact. The molten pressure-sensitive adhesive and the thermoplastic elastomer are co-extruded through an outlet in a desired shape.

This invention discloses a polypropylene / polyphenylene ether composite material, foamed particles, foamed products, and a preparation method thereof. The composite material is obtained by melt co-extrusion of the following composition; the composition comprises, by weight, the following components: polypropylene: 40-80 parts; polyphenylene ether: 15-50 parts; polystyrene: 2-20 parts; functionalized polypropylene: 1-10 parts; dynamic crosslinking agent: 1-10 parts; compatibilizer: 0-5 parts; toughening agent: 0-5 parts; nucleating agent: 0-1 part; antioxidant: 0-0.5 parts. The composite material is obtained by two-step melt blending, foamed particles are obtained by autoclaving, and foamed products are obtained by steam molding. The obtained foamed products have a uniform closed-cell structure, high heat resistance, high mechanical strength, formability, and recyclability.

This invention provides a method for stably producing plastic films using recycled plastic as a raw material for packaging films, using molding methods such as the T-die method, inflation method, calendering method, or co-extrusion multilayer T-die method. [Solution] A method for manufacturing a plastic film using recycled plastic as a raw material, wherein the content of polyolefin resin in the recycled plastic is 80% by mass or more, and the film is formed by a T-die method, an inflation method, or a calendering method; and a method for manufacturing a laminate, packaging material, and lid material using the same.

The invention relates to the technical field of wood-plastic material extrusion molding, in particular to a lining reinforced wood-plastic column and beam and a preparation method thereof. The lining reinforced wood-plastic column and beam comprises an outer shell layer, an inner reinforcing layer and a sandwich layer, the outer shell layer and the inner reinforcing layer are respectively and independently extruded and formed, the sandwich layer is contained in the middle of the inner reinforcing layer, and the sandwich layer and the inner reinforcing layer are integrally extruded and formed in a co-extrusion mode. According to the prepared lining reinforced wood-plastic column and beam, the problems that in an existing production technology, extrusion molding is difficult, the production efficiency is low, the structural strength is insufficient, the wall thickness is difficult to control, the cost is high, and the wood-plastic column and beam are difficult to be combined with PA6 engineering plastic and UHMWPE for production are solved.

The utility model discloses a kind of light shielding heat shrink tube, comprising: shielding inner layer and heat shrink outer layer, shielding inner layer and heat shrink outer layer integrated extrusion molding;Heat shrink outer layer is single-layer heat shrink layer or double-layer heat shrink layer.In the utility model, shielding inner layer, heat shrink outer layer integrated extrusion molding is made by co-extrusion, fusion realizes electromagnetic shielding, sealing protection and insulation function, compared with the scheme that traditional metal wave-break sleeve and heat shrink tube are combined, it simplifies assembly process, effectively reduces operation complexity;Lightweight structure design, effectively reduce equipment load while stability is high, corrosion resistance is strong.

The present invention provides an improved spacer for a heat-insulating glass unit that has good mechanical performance and improved thermal insulation properties, is economically manufacturable, and is environmentally friendly. [Solution] The present invention relates to a spacer for a shielding glass unit, comprising at least a body co-extruded from first and second plastic materials, the body comprising first and second lateral walls, a glazing inner wall, an outer wall, and a cavity, the body being made of first and second plastic materials and designed as a hollow profile having an alternating arrangement of A and B segments, the A segments being made of the first plastic material and the B segments being made of the second plastic material, the A and B segments being in contact with each other in the longitudinal direction, the outer wall, the first lateral wall, and the second lateral wall each comprising first, second, and third sections, and the second plastic material having a lower thermal conductivity than the first plastic material.

The present invention provides a method for manufacturing extruded products that can be produced even for products that have parts that are difficult to maintain their shape, such as protective covers on the side edges of belts. [Solution] A method for manufacturing an extruded product, comprising an extrusion step of co-extruding a first resin and a second resin arranged to surround a part of the first resin, characterized in that the first resin and the second resin are peelable in the molded state.

The invention relates to the field of plate manufacturing, in particular to a high-impact-resistance composite plate which comprises a PC inner layer modified through a flexibilizer and a functional additive and a PMMA outer layer modified through a compatilizer and toughening particles, the PC inner layer and the PMMA outer layer are formed in a co-extrusion mode and arranged in an attached mode, and the PC inner layer and the PMMA outer layer are arranged in a high-impact-resistance mode. And a protective layer is coated on the other surface of the bonding surface of the PC inner layer and the PMMA outer layer. Through the inner and outer double-layer structure, the compatilizer is adopted for combining the inner and outer layer structures, and the toughening particles are adopted for modification, so that PMMA on the outer layer and PC on the inner layer are subjected to composite molding to form the rigid-flexible double-layer structure, the surface impact can be dispersed, and brittle cracking is avoided while certain surface hardness is achieved; the scratch-resistant coating not only has relatively high scratch resistance, but also has the capability of bearing falling impact and mechanical damage.

The invention discloses a preparation method and application of a multi-electrode photoelectric flexible optical fiber, and belongs to the technical field of multifunctional flexible fiber preparation. Flexible material granules are fused to serve as a cladding, a conductive composite material prepared through a co-extrusion process serves as an electrode, a prefabricated body is assembled, and the multi-electrode photoelectric flexible optical fiber is obtained through hot stretching. The tensile elongation of the flexible optical fiber is up to 685%. By stretching the multi-electrode photoelectric flexible optical fiber, a resistance signal becomes larger, a light intensity signal becomes smaller, monitoring of the bending direction can be achieved through resistance changes of different electrodes, and the bending recovery process is reversible. The multi-electrode photoelectric flexible optical fiber sensor can simultaneously monitor stretching and bending directions in two dimensions of electric signals and optical signals.

Sealing strand with a flexible, longitudinally extending puller element (6, 6b, 6b', 6b'', 6b''') which forms an aid for the assembly of the sealing strand, which in a puller operation transfers a sealing lip (3) of the assembled sealing strand into its intended position, wherein the puller element (6) consists of a rubber sheath (7) co-extruded with the sealing lip (3) and a cord (8) embedded in the rubber sheath (7) and projects beyond at least one strand end (9), characterized in that an end piece (10, 10b, 10b', 10b'', 10b''') of the puller element (6, 6b, 6b', 6b'', 6b''') projecting beyond the strand end (9) is connected at a connection point (12, 14) to the rest of the puller element (6,6b,6b',6b'',6b'''') is connected, with the remaining puller element (6,6b,6b',6b'',6b'''') being flush with the end of the sealing strand.

The invention provides a modified polyether-ether-ketone resin composite material as well as a preparation method and application thereof, and belongs to the field of high-molecular polymer materials. The modified polyether-ether-ketone resin / glass fiber composite material with a continuous chemical gradient interface is prepared through the interface bonding design of the polyether-ether-ketone oligomer containing the phenylacetylene functional group, the respective plasticizing and co-extrusion composite process and the reverse gradient structure design with the hard outside and the tough inside; the composite material is used for a high-performance robot exoskeleton device, and the problems that the strength and toughness of a traditional composite material are difficult to maximize at the same time, layers of a multi-layer or gradient material are easy to strip and lose efficacy, and a high-performance complex component is tedious in preparation process and low in efficiency are solved. The composite material provided by the invention has excellent mechanical properties and anti-aging and anti-fatigue properties, shows certain heat resistance during high-temperature heating, and shows great application potential in the field of high-end medical devices.

The application discloses a preparation method of a steel skeleton plastic composite pipe and the steel skeleton plastic composite pipe and belongs to the technical field of pipes. The method is characterized in that: low-carbon steel wires are subjected to electrochemical etching to form a nano-scale porous structure, and are woven into a gradient porosity steel wire mesh with porosity gradually decreasing in the thickness direction of the pipe wall; the steel wire mesh is subjected to immersion in a molten mixed liquid containing maleic anhydride grafted high-density polyethylene and an initiator under ultrasonic vibration, so as to form a chemical bonding interface layer on the surface of the steel wire; and the steel wire mesh is sent into a co-extrusion die to fill high-density polyethylene melt under high pressure and is once composite formed to obtain a pipe blank, and the pipe blank is subjected to step temperature control cooling and heat treatment to obtain a finished product. The steel wire surface of the composite pipe is connected with the plastic matrix through a covalent chemical bond, and the steel wire end face at the pipe end is completely closed by the continuous plastic matrix. The application realizes synergistic effects in the aspects of interface bonding strength, corrosion resistance and thermal cycle stability.

A cellular confinement system (1) for soil stabilization, comprising strips (10) arranged next to each other, wherein adjacent strips (10) are attached together at local attachment areas (11) spaced along the strips (10), wherein portions (12) of each strip (10) located between two local attachment areas (11) are allowed to bend to conform the cellular confinement system (1) into an array of cells (13) for receiving filler material, wherein each strip (10) comprises a polymer matrix (20) and at least one reinforcement (21) embedded within the polymer matrix (20) and extending over the entire length of the strip (10), each reinforcement (21) being obtained by grouping a plurality of filaments (22) together, the reinforcement (21) being pretensioned so that a residual force is conserved in the reinforcement (21) once it is embedded into the polymer matrix (20). A manufacturing process involving co-extrusion of said matrix (20) and reinforcement (21) is disclosed.

This utility model relates to the field of building structure engineering technology, specifically to a prefabricated bamboo-based composite frame beam-column joint based on co-extrusion technology. The joint connects bamboo-based composite columns and beams, comprising a hollow cylindrical steel section and two horizontal steel plates. The hollow cylindrical steel section is inserted into the bamboo-based composite column. The horizontal steel plates include a connecting section and an extension section. The connecting section is welded to the outside of the hollow cylindrical steel section, and the extension section, serving as a beam connection, is connected to the bamboo-based composite beam using high-strength bolts. The extension section covers the outside of the bamboo-based composite beam. The two horizontal steel plates are spaced apart, dividing the hollow cylindrical steel section into a middle column segment and two end column segments. The middle column segment of the hollow cylindrical steel section is bonded to the bamboo-based composite column using adhesive, and the end column segments are connected to the bamboo-based composite column using high-strength bolts. This utility model saves building space while reducing steel consumption and material costs.

In one embodiment, an extruded board includes an extruded core having an outer circumference, the outer circumference including a first side and a second side opposite to the first side, the core including foamed high density polyethylene (HDPE). A cap layer is co-extruded on the first side, the cap layer including at least one co-extruded streak portion at an outer surface of the cap layer, the at least one co-extruded streak portion including HDPE which is colored differently from an adjacent co-extruded HDPE portion of the outer surface.

Spoolable composite pipes, a method of producing spoolable composite pipes, and a method for transporting a hydrocarbon fluid are provided. The spoolable composite pipes have an inner extruded tubular liner, a backer layer surrounding the inner extruded tubular liner, and a reinforcement layer surrounding the backer layer. The backer layer includes a polypropylene, and the inner extruded tubular liner includes a thermoplastic. The production method includes co-extruding the inner extruded tubular liner with the backer layer, providing the reinforcement layer, and extruding the cover layer around the reinforcement layer. The method for transporting a hydrocarbon fluid includes providing the spoolable composite pipe and introducing the hydrocarbon fluid with an aromatic content of up to about 35% by volume based on the total hydrocarbons content.

Method for manufacturing fuel tanks (100), comprising multilayer tanks (101) and singlelayer tanks (102), comprising the following steps: 1) Co-extrusion of a multi-layer material (M1) for at least one multi-layer tank (101) in a co-extrusion plant (Coex), 2) Forming the at least one multi-layered tank (101) from the multi-layered material (M1) in a first forming tool (F1) of the co-extrusion plant (Coex), 3) Providing waste material (A) from the multilayer material (M1) of the co-extrusion plant (Coex) to a mono-extrusion plant for extruding a single-layer material (M2) for at least one single-layer tank (102), wherein the waste material (A) is stored in a collection container (120) in step 3) and is fed to the co-extrusion plant (Coex) and / or the mono-extrusion plant as required.

The application provides a wave-absorbing film material with electrostatic adsorption function and a preparation method thereof, and belongs to the field of functional film materials.The wave-absorbing film material with electrostatic adsorption function comprises a PVC film and PP films compounded on both sides of the PVC film; the preparation raw materials of the PVC film comprise an electromagnetic wave absorber, PVC resin particles and an additive; the electromagnetic wave absorber comprises a carbon material type electromagnetic wave absorber; the additive comprises a stabilizer and a plasticizer; the preparation raw materials of the PP film comprise PP resin particles, a filler and an additive; and the additive comprises a toughening agent and a lubricant.The PVC film and the PP film with wave-absorbing function are compounded by a co-extrusion technology, and then the compounded film is subjected to corona treatment to obtain the wave-absorbing film material with electrostatic adsorption function, which has good insulation, excellent electrostatic adsorption capacity, high surface energy and excellent wave-absorbing performance, and can meet the requirements of different use environments.

The application discloses a kind of multi-orientation continuous fiber reinforced ceramic composite material additive manufacturing methods, first based on the cross-lamella structure characteristics of the inner layer of double-shell type shell design multi-layer wire frame model;Then its outer surface is combined with Bouligand structure characteristics and design multi-layer fiber arrangement structure;According to the obtained three-dimensional multi-orientation wire frame model, plan continuous printing path, and regulate robot posture, generate continuous motion trajectory code;With continuous fiber and resin wire material as raw material, in-situ impregnation co-extrusion is carried out;The obtained composite blank is immersed in phenolic resin solution to carry out the debinding process based on impregnation, carbonization;The obtained continuous fiber preform is added to the precursor impregnation solution to carry out precursor impregnation, cracking treatment, and the composite material is obtained.The application can obtain high-strength, high-toughness continuous fiber reinforced ceramic material with mechanical isotropy, and can provide a new idea for the preparation of high-performance continuous fiber reinforced ceramic.

An integrally formed, pre-stressed thermoplastic lumber product and a method for its manufacture are disclosed. The product comprises a core of a thermoplastic polymer, such as PVC, blended with chopped strand fibers. A plurality of pre-tensioned continuous fiber reinforcements are pultruded axially within the core. Enhanced frictional and mechanical coupling between the chopped fibers and the continuous reinforcements resists delamination and enables the effective transfer of tensile stress into compressive pre-stress within the core. The resulting lumber, finished with a co-extruded capstock layer, is a high-stiffness composite exhibiting a modulus of elasticity of at least 650,000 psi. The method involves the simultaneous co-extrusion of the core and capstock around the tensioned, pultruded continuous reinforcements.

The application discloses a kind of preparation methods of corrosion-resistant composite cable conductor, it is related to alloy cable technical field, comprising: high-purity aluminum matrix and intermediate alloy containing conductivity promoting element are smelted, refined, cast, annealed, extruded and aged treatment after preparation aluminum alloy conductor mixture;Reinforcing fiber, polymer matrix, interface reinforcing agent and nano filler are mixed, and anti-creep reinforcing mixture is prepared;Aluminum alloy conductor mixture and anti-creep reinforcing mixture are prepared by co-extrusion process, and composite cable is obtained;Polymer matrix, interface reinforcing agent, functional filler and plasticizer are mixed, and corrosion-resistant protective layer is prepared on the outside of composite cable by surface activation and secondary extrusion process.The application is combined with the composite structure of anti-creep reinforcing layer and aluminum alloy conductor, which significantly improves the anti-creep ability of the cable;And corrosion-resistant protective layer is closely combined with composite cable, suitable for humid or salt spray environment.