52results about "Closed loop articles" patented technology

The present invention relates to an elastomeric laminate comprising at least two adjacent layers, wherein: the rubber composition constituting the first layer is based on 20 phr to 100 phr of at least one copolymer comprising ethylene units and 1,3-diene units of formula CH2=CR-CH=CH2, the ethylene units in the copolymer representing more than 50 mol% of the copolymer monomer units, and the symbol R represents a hydrocarbon chain having 3 to 20 carbon atoms, 0 phr to 80 phr of at least one diene elastomer having a diene unit weight concentration greater than 50%, 10 phr to 100 phr of a plasticizing system comprising at least one plasticizing resin having a glass transition temperature higher than 20°C and / or at least one plasticizer which is liquid at 23°C, and a reinforcing filler, and a crosslinking system; the rubber composition constituting the second layer is based on a diene elastomer having a diene unit weight concentration greater than 50% and a crosslinking system. The present invention also relates to a rubber article, in particular a pneumatic or non-pneumatic tire, comprising such a laminate.

The invention relates to the technical field of rubber conveying belts, and discloses a high-temperature-resistant flame-retardant chlorinated polyvinyl chloride plastic conveying belt. The conveyor belt aims at solving the problems that an existing rubber-based conveyor belt is poor in thermal stability, low in flame retardant efficiency and rapid in mechanical property attenuation in a high-temperature, open fire or thermal radiation environment. The tensile body is composed of an upper covering layer, a lower covering layer and a tensile body core layer. The covering layer is formed by blending and extruding chlorinated polyvinyl chloride resin, a heat stabilizer, a flame retardant synergist, a smoke suppressant, a plasticizer, a lubricant and an inorganic filler; and the core layer is formed by compounding and hot-pressing plasma-treated aramid fabric and chlorinated polyvinyl chloride dipping slurry. Through multi-component collaborative design, the conveyor belt keeps structural integrity and mechanical properties under long-term thermal exposure at 200 DEG C, the limit oxygen index is larger than or equal to 38% and reaches the UL94 V-0 level, and the conveyor belt is free of molten drops, low in smoke and low in toxicity, can be subjected to continuous thermoplastic forming and does not need vulcanization.

A belt carcass (1) comprising one, two, or more than two impregnated layers (21, 22, 23, 24, 25); characterised in that i) each impregnated layer (21, 22, 23, 24, 25) comprises, or consists essentially of, a non-woven fabric (3, 301, 302, 303, 304, 305, 306, 307, 308) and an impregnation material (4, 401, 402, 403, 404, 405, 406, 407, 408) comprising, or consisting essentially of, a first thermoplastic, first thermoplastic elastomer, first elastomer or first thermoset and optional additives; whereby, if there are two or more such impregnated layers (21, 22, 23, 24, 25), they are adjacent to each other, ii) if the belt carcass (1) comprises one or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (51) are embedded in the non-woven fabric (3) of exactly one of said impregnated layers (21); or if the belt carcass (1) comprises two or more such impregnated layers (21, 22, 23, 24, 25), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer (52,53) are sandwiched between two adjacent such impregnated layers (21 / 22, 24 / 25), and iii) the belt carcass is devoid of woven fabrics. This belt carcass can be cut into longitudinal belts or into circular disks or corner belts.

A suction belt (30) for cutting machines (10), comprising: - a cutting layer (32) made of non-woven fabric, having a thickness between 1 - 6 mm, - a reinforcing fabric (38), - a hot melt adhesive layer (44) with a basis weight between 0.01 - 0.3 kg / m2, positioned between the cutting layer (32) and the reinforcing fabric (38), wherein the suction belt (30) has an air permeability in the range of 6 - 60 l / dm2 / min.

A suction belt for cutting machines includes a cutting layer made of non-woven fabric, having a thickness between 1-6 mm; a reinforcing fabric; and a hot melt adhesive layer with a basis weight between 0.01-0.3 kg / m2, positioned between the cutting layer and the reinforcing fabric, where the suction belt has an air permeability in the range of 6-60 l / dm2 / min.

This invention belongs to the field of flame-retardant conveyor belt technology, specifically relating to an aramid core solid flame-retardant conveyor belt and its preparation method. The aramid core solid flame-retardant conveyor belt includes a cover rubber, a single layer of aramid fiber cloth, and an adhesive layer. The cover rubber, by weight, comprises: 90-110 parts rubber, 4-6 parts hydroxyl-containing epoxy resin, 35-45 parts modified filler, 10-20 parts flame retardant, 4-6 parts zinc oxide, 1-5 parts antioxidant, 1-5 parts accelerator, 1-3 parts sulfur, and 1-3 parts stearic acid. The rubber includes styrene-butadiene rubber, neodymium-based cis-butadiene rubber, natural rubber, and fluororubber. The aramid core solid flame-retardant conveyor belt provided by this invention exhibits excellent cold resistance, wear resistance, flame retardancy, hydrophobicity, and adhesive strength.

The invention discloses a preparation method of a self-lubricating composite belt, and belongs to the technical field of transmission conveying belts and running belts. Weaving base cloth by adopting a herringbone weaving method, weaving middle-layer cloth by adopting a plain weaving method, and respectively drying and shaping the cloth; coating the back surface of the base cloth with an adhesive, and then forming a shaped shock absorption layer through a casting process or a calendering process; coating the front and back surfaces of the middle-layer cloth with an adhesive, then overlapping the middle-layer cloth with the base cloth with the shaping shock absorption layer, and performing high-temperature pressurization compounding to form a primary belt body; forming a surface wear-resistant layer on the surface of the primary belt body through a tape casting process or a calendering process, and performing embossing treatment to obtain a composite belt base body; the surface of the base cloth of the composite belt base body is coated with a self-lubricating material, a self-lubricating coating is formed through heating permeation and cooling solidification, and the self-lubricating composite belt is prepared. Through unique self-lubricating material combination and structural design, the ultra-low friction coefficient, lifelong refueling-free and self-cleaning functions of the product are achieved, the service life of the product is remarkably prolonged, and the energy-saving performance of the product is remarkably improved.

A friction transmission belt includes a compression layer forming a pulley contact portion, the compression layer includes an inner layer formed from a rubber composition and an outer layer provided on a pulley contact side of the inner layer and formed from a fiber member, and a ratio (M10 modulus / M50 modulus) of an modulus at 10% elongation in a belt longitudinal direction (M10 modulus) to an modulus at 50% elongation in the belt longitudinal direction (M50 modulus), of the rubber composition, is not less than 1.5.

The present disclosure relates to an extruded industrial fabric. A method of manufacturing an industrial fabric is crosshead extrusion of a first layer of polymeric matrix material with a linear member. The crosshead extruded linear member with the polymer matrix material may be a continuous system oriented in the longitudinal direction. A layer of nonwoven material is provided on a surface of the first layer of polymeric matrix material, and a second layer of polymeric matrix material is extruded onto the layer of nonwoven material. A first layer of polymeric matrix material at least partially surrounds the linear feature. The front face of the industrial fabric may be smooth or may include a texture or pattern. The back side may be smooth (planar), have variable roughness, or include needled fibers incorporated into the structure of the fabric.

The invention discloses a multi-layer belt, a medium conveying device and a recording device. The multilayer tape is provided with: a metal layer (70) formed in a ring shape; a resin layer (72) provided on the metal layer (70); and a low-reflection layer that is provided at least partially between the metal layer (70) and the resin layer (72) and that has a lower light reflectance than the metal layer (70).

The invention discloses a high-holding bobbin accurate conveying composite material which comprises a center layer, an upper transmission layer and a lower transmission layer, the upper transmission layer and the lower transmission layer are located above and below the center layer, a high-holding material upper layer is arranged between the center layer and the upper transmission layer, and a high-holding material lower layer is arranged between the center layer and the lower transmission layer. The invention also discloses a preparation method of the composite material. According to the invention, the high holding material is added as a material for contacting and holding the bobbin, so that the bobbin chassis is stably held, the slipping phenomenon of the bobbin chassis and the conveying belt is avoided, the accurate conveying of the bobbin is realized, the repiecing and jointing efficiency of the automatic bobbin winder is improved, and the high-speed and high-efficiency performance of the intelligent bobbin winder is fully exerted.

A printed magnetic rip insert and system for monitoring conveyor belts using printed rip inserts is disclosed. The system includes: a plurality of printed rip insert elements on a substrate of a conveyor belt; a field generator for generating a magnetic field proximate the printed rip insert elements; and a detector for detecting an image of a magnetic field produced by the plurality of printed rip inserts.

The invention provides a halogen-free rubber conveyor belt and a preparation process thereof, and belongs to the technical field of rubber conveyor belts, and the preparation process comprises the following steps: mixing, stirring, cooling and drying n-hexylphosphoric acid, ethanol and a magnesium hydroxide suspension to prepare modified magnesium hydroxide; the method comprises the following steps: grinding steel slag powder, adding absolute ethyl alcohol and a sorbic acid solution, stirring for reaction, centrifuging, taking precipitate, and drying to obtain modified steel slag; the rubber, the modified steel slag, the carbon black, the modified magnesium hydroxide and the auxiliaries are added into a double-roller open mill to be evenly mixed, thin-passing and calendaring are conducted to form sheets, then the sheets, aramid fiber cloth subjected to surface treatment and a steel wire rope are subjected to compression molding, and vulcanization is conducted to prepare the halogen-free rubber conveying belt. The flame retardant property of the rubber conveying belt is improved, and meanwhile the mechanical strength and the high-temperature resistance are improved.

The invention relates to the technical field of conveying belts, discloses a high-strength digital printing conveying belt of a multi-layer structure, and aims to solve the problem of pitch deviation caused by interface stress concentration, thermally induced size instability and creep deformation. The conveying belt is characterized by being sequentially provided with a transmission friction layer, a bottom bonding transition layer, a composite reinforcing framework layer, a stress compensation layer and a surface printing bearing layer from bottom to top. Wherein the framework layer adopts a high-modulus para-aramid fiber three-dimensional weaving structure, and the stress compensation layer is formed by compounding a tungsten phosphate zirconium filler with a negative thermal expansion characteristic and an elastomer. All the layers are integrated through chemical bonding or dipping treatment. According to the scheme, the longitudinal modulus and the dynamic thermal stability of the conveying belt are remarkably improved, thermally induced deformation and edge wrinkling are effectively restrained, and the registration precision of high-resolution printing is ensured.

To provide a fixing member that can achieve both of toner releasing properties and scratch resistance at a high level over a long period of time.SOLUTION: A fixing member having an endless belt shape or a roller shape includes a base layer and a surface layer. The surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and has a pore communicating with an opening of an outer surface of the surface layer, and perfluoropolyether is contained in at least a part of the pore. A ratio (E"(1) / E"(2)) is 0.60 or more and less than 1.00, where E"(1) is an average value of loss elastic moduli E" of the surface layer in a direction orthogonal to a circumferential direction of the fixing member measured at a frequency of 10 Hz at 100 to 150°C, and E"(2) is an average value of loss elastic moduli E" of the surface layer in the direction orthogonal to the circumferential direction of the fixing member measured at the frequency of 10 Hz at 100 to 150°C after removal of the perfluoropolyether contained in the pore.SELECTED DRAWING: Figure 2

The present disclosure provides an article. The article includes an adhesive layer with two opposing surfaces. The adhesive layer includes (i) a functionalized ethylene-based polymer having a melt index from 0.1 g / 10 min to 300 g / 10 min; (ii) from 0.01 wt % to 45 wt % of a functionalized hydrocarbon; (iii) a tackifier; and (iv) optionally, a crosslinking agent.

A shielding structure of a safety inspection equipment and a safety inspection channel are provided. The shielding structure of the safety inspection equipment includes a first carbon fiber layer, a polyurethane layer and a second carbon fiber layer, which are sequentially stacked to be configured as a shielding channel with two opened ends. The second carbon fiber layer is an outer layer of the shielding channel. The first carbon fiber layer and the second carbon fiber layer are made of carbon fiber materials. The polyurethane layer is made of polyurethane materials. In the present disclosure, the polyurethane board layer is added between the two carbon fiber layers, since the carbon fiber layer has good strength, the carbon fiber layers are covered on the both sides of the polyurethane board to ensure the overall strength, so that the rigidity of the shielding structure can be improved. And the rigidity of the shielding structure has little influence on the imaging quality, so that the rigidity of the shielding structure can be improved while reducing the influence on the imaging quality. In addition, the polyurethane board layer has small density, so that the polyurethane board layer is lighter than the carbon fiber layer, and thus the total weight can be reduced. And, cost of the polyurethane board layer is low, thus reducing the overall cost.

The present invention relates to a toothed belt, including: a back portion including a tension member; a plurality of tooth portions; a back rubber layer; and a first rubber layer and a second rubber layer that are formed on a belt inner circumferential side with respect to the tension member, in which an elastic modulus of the first rubber layer is larger than that of the second rubber layer, the first rubber layer includes a first crosslinked rubber composition including a first rubber component and a first short fiber, a proportion of the first short fiber is 5 parts by mass to 60 parts by mass with respect to 100 parts by mass of the first rubber component, the first short fiber is oriented in a belt longitudinal direction along a contour of the tooth portion.

The application discloses a carbon fiber composite reinforced cover layer based on a dip coating process, which comprises a base cover rubber layer and a carbon fiber composite layer, wherein the carbon fiber composite layer is obtained by dipping carbon fiber composite cloth in glue, air-drying, and vulcanization; the carbon fiber composite layer is adhered to the upper surface of the base cover rubber layer through vulcanization; and the base cover rubber layer comprises the following raw material components: 95 parts of natural rubber, 15 parts of butadiene rubber, 3-5 parts of nano zinc oxide, 1-3 parts of stearic acid, 1-2 parts of solid malon resin, 1-2 parts of antioxidant 4010NA, 1-2 parts of antioxidant BW-60, 1-2 parts of heat-resistant antioxidant RF, 1-2 parts of antioxidant RD, 1-2 parts of microcrystalline wax, 0.5-0.8 parts of anti-scorching agent CTP, 45-50 parts of carbon black N220, 1-3 parts of aromatic oil, 1-3 parts of sulfur, and 1-2 parts of accelerator CBS. The application further discloses an ultrahigh-strength conveying belt, wherein the upper cover rubber layer of the ultrahigh-strength conveying belt adopts the carbon fiber composite reinforced cover layer based on the dip coating process, and the ultrahigh-strength conveying belt has the performance of ultrahigh strength.

A pipe belt system (100, 200) comprising a pipe belt (102, 400, 500, 600, 802) comprising one or more thermoplastic elastomeric (TPE) layers (402, 404, 406, 410) and a reinforcement layer (408, 508) is disclosed. The one or more TPE layers (402, 404, 406, 410) have a first modulus of elasticity and a first stiffness and formed across a width of the belt. The reinforcement layer (408, 508) is formed proximate to the one or more TPE layers (402, 404, 406, 410) and has a second modulus of elasticity and a second stiffness. The pipe belt is configured to have an open state where the belt is substantially flat and a closed state where the belt is formed having a circular shape and partially overlaps itself. The pipe belt has a combined modulus of elasticity based on the first modulus of elasticity and the second modulus of elasticity and a combined stiffness based on the first stiffness and the second stiffness.

A ceramic ablation-resistant conveyor belt includes a core layer and a vulcanized layer. A ceramic sheet is embedded inside a frame and embedded on the vulcanized layer of the conveyor belt body together with the frame, and is directly connected to a skeleton. The vulcanized layer is exposed on an upper surface of the ceramic sheet. The ceramic sheet is embedded in the frame, which is embedded in the vulcanized layer, which is directly connected to the skeleton to make it stronger. The frame is fixed through the vulcanized layer, and the ceramic sheets are fixed through the frame, which is more solid compared with ceramic sheets connected only by bonding. The conveyor belt is more stable, and the ceramic sheet is less likely to fall off during long-term use. If it falls or is damaged, it can be easily replaced, thereby improving its service life.

The invention relates to an elastomeric article comprising an elastomeric base body and a composite of an elastomeric sheet and a textile surface body, wherein the composite is arranged as a surface layer on one side of the base body, such that the textile surface body faces the base body, and wherein the elastomeric sheet contains particles, preferably spheres, of cross-linked polyorganosiloxane. The composite used in the elastomeric article is particularly suitable as a surface layer for force transmission zones and is characterized by low sliding friction.

The present application belongs to the technical field of conveying belt, and particularly relates to a flame-retardant heat-resistant conveying belt and a preparation method thereof. The flame-retardant heat-resistant conveying belt provided by the present application comprises a framework layer and a covering rubber layer, and the covering rubber layer comprises the following components: ethylene-propylene-diene rubber, nitrile rubber, flame-retardant resin, reinforcing agent, nano flame-retardant agent, accelerator, antioxidant and sulfur. In the present application, the flame-retardant resin is used as part of the flame-retardant agent instead of the traditional flame-retardant agent to be added into the covering rubber, so as to reduce the influence of the amount of the flame-retardant agent on the mechanical properties of the covering rubber; the bisphenol A-bis(diphenyl phosphate) modified nano aluminum hydroxide is used as the nano flame-retardant agent to be added into the covering rubber, so as to improve the compatibility of the nano aluminum hydroxide with the covering rubber and the flame-retardant heat-resistant properties of the covering rubber; and the 2-mercaptobenzothiazole and N-cyclohexyl-2-benzothiazole sulfenamide are used to form the accelerator together, so as to improve the vulcanization efficiency and improve the mechanical properties and aging resistance of the covering rubber.

A conveyor belt including a carry cover layer, a reinforcement layer which is situated below the carry cover layer, and a pulley cover layer which is situated below the reinforcement layer, where the reinforcement layer is comprised of steel cordage and rubber matrix, and wherein the rubber matrix includes zinc oxide in an amount greater than 5 phr. In some cases the rubber the matrix includes zinc oxide in an amount of 11 phr or greater, or even in an amount of 16 phr or greater. In some aspects, the rubber matrix is devoid of lead oxide. In some aspects, the steel cordage is zinc coated steel cords.

The present invention is a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire, the belt inner circumferential surface being configured from a tooth cloth, wherein the back portion includes the back rubber layer, the elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer, and the tooth portions include the tooth cloth, the first rubber layer, which is formed along the tooth cloth, and the second rubber layer, which is interposed between the first rubber layer and the core wire.

The invention relates to an aramid fiber conveying belt and a preparation method thereof, and relates to the technical field of rubber conveying belts. The aramid fiber conveying belt comprises upper covering rubber, a framework layer and lower covering rubber, the framework layer comprises a single-layer aramid fiber fabric, and the warp tensile strength of the single-layer aramid fiber fabric is larger than or equal to 6000 N / mm; the preparation method of the aramid fiber conveying belt comprises the steps of preparation of aramid fiber fabric grey cloth, dipping and heat treatment, calendaring and forming and vulcanization. The single-layer high-strength aramid fiber fabric is adopted as the framework layer, the limitation that a traditional conveying belt depends on multi-layer stacking to achieve high strength is broken through, on the premise that the strength meets or even exceeds the strength of a traditional high-end conveying belt, the belt body is lighter and thinner, the overall mass is lighter, and weight reduction of the conveying belt is achieved; and meanwhile, the structural strength and the service life under the conditions of heavy load and long distance are ensured.

The application belongs to the technical field of polymer material conveying belt, and discloses an aramid fiber reinforced impact resistance and wear resistance conveying belt and a preparation method. The conveying belt comprises a covering rubber, a core layer rubber and an aramid fiber cloth. The surface crystallinity of aramid short fibers is moderately reduced by dimethyl sulfoxide infiltration, and then GMA functional groups and carboxyl functional groups are used to penetrate the aramid short fibers, so as to enhance the activity of the aramid short fibers and promote the interaction between the modified aramid short fibers and the rubber, thereby greatly improving the tensile strength, wear resistance and shear impact resistance of the covering rubber. By using malic acid resin in the core layer rubber, the core layer rubber and the aramid fiber cloth are fully penetrated and bonded, the adhesion strength of the covering rubber and the aramid fiber cloth is enhanced, the structural strength and durability of the conveying belt are improved, the protective rubber layer is prevented from falling off, the aramid core layer skeleton is matched, the service life of the conveying belt is prolonged, and the long-distance heavy-load conveying belt demand is met.

The invention provides a halogen-free rubber conveyor belt and a preparation process thereof, belonging to the technical field of rubber conveyor belts. The invention comprises the following steps: mixing n-hexyl phosphoric acid, ethanol and a magnesium hydroxide suspension, cooling and drying to obtain modified magnesium hydroxide; grinding steel slag powder, adding anhydrous ethanol and a sorbic acid solution, stirring and reacting, centrifuging to obtain a precipitate, and drying to obtain modified steel slag; adding rubber, modified steel slag, carbon black, modified magnesium hydroxide and an auxiliary agent into a double-roll mill, mixing, thinning, calendering to produce a sheet, and pressing the surface-treated aramid fiber cloth and a steel wire rope into a sheet, and vulcanizing to obtain a halogen-free rubber conveyor belt, which can improve the flame retardant property of the rubber conveyor belt while improving the mechanical strength and high-temperature resistance.

The invention belongs to the technical field of conveying belts, and particularly relates to a flame-retardant heat-resistant conveying belt and a preparation method thereof. The flame-retardant heat-resistant conveying belt comprises a framework layer and a covering rubber layer, and the covering rubber layer comprises the following components: ethylene propylene diene monomer, nitrile rubber, flame-retardant resin, a reinforcing agent, a nano flame retardant, an accelerant, an anti-aging agent and sulfur. The flame-retardant resin is used as a part of flame retardant to replace a traditional flame retardant to be added into the covering rubber, so that the influence of the dosage of the flame retardant on the mechanical property of the covering rubber is reduced; bisphenol A-bis (diphenyl phosphate) modified nano aluminum hydroxide is adopted as a nano flame retardant to be added into the covering rubber, so that the compatibility of the nano aluminum hydroxide and the covering rubber is improved, and meanwhile, the flame-retardant and heat-resistant properties of the covering rubber are improved; 2-mercaptobenzothiazole and N-cyclohexyl-2-benzothiazole sulfenamide are adopted to jointly form an accelerant, so that the vulcanization efficiency is improved, and the mechanical properties and aging resistance of the covering rubber are improved.

The present invention pertains to a toothed belt comprising a back portion in which a core wire extending in the belt circumferential direction is embedded, and a plurality of tooth portions formed on the inner circumferential surface of the back portion at intervals in the belt circumferential direction, and including a back rubber layer formed on the outer circumferential side of the belt relative to the core wire, and a first rubber layer and a second rubber layer that are formed on the inner circumferential side of the belt relative to the core wire. The back portion includes the back rubber layer. The elastic modulus of the first rubber layer is larger than the elastic modulus of the second rubber layer. The first rubber layer is formed from a first cross-linked rubber composition including a first rubber component and first short fibers, the proportion of the first short fibers is 5-60 parts by mass with respect to 100 parts by mass of the first rubber component. The first short fibers are aligned in the belt longitudinal direction along the contour of the tooth portions, and the tooth portions include the first rubber layer and the second rubber layer which is interposed between the first rubber layer and the core wire.