Abstract: A multi-layer hose usable for a fuel hose of an automotive vehicle. The multi-layer hose includes an intermediate layer formed of a resin whose main component includes polyester. An outer layer is provided formed of rubber and disposed outside the intermediate layer. Additionally, an inner layer is provided formed of fluoroelastomer and disposed inside the intermediate layer to be laminated directly on the intermediate layer.

Abstract: A hose (1) comprising a core tube (2), a reinforcement layer (3) surrounding the core tube (4), and a cover (4) surrounding the reinforcement layer, wherein at least one of the core tube (2) and cover (4) are made of a thermoplastic material comprising one or more thermoplastic polyether-polyester block copolymers, and said thermoplastic material has a Shore D hardness no less than about 60.

Abstract: A hose for feeding cold or hot water, which can be easily bent even at a small radius so that it can be applied in a small piping space, which is free of kink, and which can accommodate running water containing chlorine, is provided. The hose for feeding cold or hot water includes: an inner layer formed of an elastic tube; an inner reinforcing layer formed of a fiber yarn wound in a spiral provided on the inner layer; and an outer reinforcing layer formed of a woven metallic hard wire provided on the inner reinforcing layer.

Abstract: A fuel hose for a fuel pipeline in an motor vehicle has a multilayer structure including a resin barrier layer having low permeability to fuel, an outer rubber layer laminated on an outer side of the barrier layer and an inner rubber layer laminated on an inner side of the barrier layer and defining an inner surface layer of the fuel hose. The multilayer structure is formed throughout an entire length of the fuel hose. A rubber hardness of the inner rubber layer is higher than a rubber hardness of the outer rubber layer.

Abstract: A tubular body comprises an inner hollow core and an outer casing of one or more strips of self mechanically inter-engaging helically wound material having a higher yield strength than that of the core material. Also provided is a method of forming the tubular body comprising the steps of winding the outer core onto the inner core and an end connector for use with said tubular body when said body is provided with helically extending detents on an outer surface thereof.

Abstract: The pipe for use in the field of sanitation and/or heating, comprises —an inner layer made of a fluo?nated polymer material, —an adhesive layer being in contact with the inner layer, and —an outer layer being in contact with the adhesive layer and including a polyolefin material, —wherein the adhesive layer is configured to bond the fluorinated polymer material of the inner layer to the polyolefin material of the outer layer.

Abstract: A stainless steel pipe includes a base metal containing 20-35 mass % of Cr, and a Cr-depleted zone is formed in the surface region of the pipe. The Cr concentration in the Cr-depleted zone is at least 10%, and the thickness of the Cr-depleted zone is at most 20 micrometers. A Cr-based oxide scale layer having a Cr content of at least 50% and a thickness of 0.1-15 micrometers may be provided on the outer side of the Cr-depleted zone. An Si-based oxide scale layer with an Si content of at least 50% may be provided between the Cr-based oxide scale layer and the Cr-depleted zone. The pipe is particularly suitable for use in petroleum refineries or petrochemical plants, such as for use as a pipe of a cracking furnace of an ethylene plant.

Abstract: A fuel hose for a resin fuel tank has a triple layer structure including a barrier layer made of an alloy material consisting primarily of EVOH and modified HDPE, and a pair of welding layers made of HDPE and formed on an inner peripheral surface and an outer peripheral surface of the barrier layer, respectively. An opening portion of the fuel hose at one end is configured in the form of an increased diameter portion and also in the form of a thick-walled portion. The increased diameter portion (or the thick-walled portion) is formed by reducing the speed of movement of dies when a hose base body is extruded into an increased diameter portion of a die surface of the dies during extrusion.

Abstract: The present invention relates to a multilayer pipe or hose, in particular a plastic pipe, comprising at least one polyester barrier layer and at least one additional protective layer, the additional protective layer being a polyethylene layer, in particular a HDPE layer, and the barrier layer and the protective layer being are interconnected via at least one adhesion promoter layer.

Abstract: A tubular product has a tubular base layer, a tubular innermost layer made of plastic by continuous extrusion, and a tubular tie layer of foamed plastic between and adhered to the base layer and the innermost layer. The tie layer is made of melt processable adhesion plastic, is extruded simultaneously with the innermost layer against the base layer, and has better adhesions to the base and innermost layers than the base and innermost layers have to each other.

Abstract: A thin walled cross-linked polyethylene (PEX) pipe having a reinforcing material disposed around an exterior wall thereof is provided. As the PEX pipe passes through an extrusion die, a thread guide applies a plurality of reinforcing threads in a particular pattern to the exterior surface thereof to allow for uniform three-dimensional (axial and radial) tensile properties so as to achieve optimum reinforcement of the pipe wall while maintaining its flexibility and without significantly increasing the thickness of the wall or the weight of the PEX pipe.

Abstract: This invention provides a three-in-one water-supply pipe with accessories for quality-distinguished distribution of domestic water. This pipe contains three pipes arranged in a triangular combination to supply drinkable water, service water and recycled water at the same time. The diameter and thickness of the pipe walls of the three pipes depend on required water-supply volume and pressure. The accessories, including triangle shaped straight pipe, straight joint, 90-175 degree bending joint, tee joint and pipe clip are all made of contamination-free material, which can be assembled into a multi-pipe delivering system for separate supply of different domestic water to users. This three-in-one pipe system reduces manufacturing costs and provides good heat insulation to save energy. It is also easy for installation and maintenance.

Abstract: A hydraulic pipe comprising an inner layer of polyphthalamide and an outer layer of thermoplastic material, the pipe having its thickness formed mainly by the thickness of the inner layer.

Abstract: A pipe for transporting fluid in motor vehicles, such as fuel or oil under high tempature and pressure, comprises one layer constituted for the most part of polyphthalamide (PPA) and one layer constituted for the most part of fluoropoloymer. The pipe has a thickness formed mainly by the thickness of the polyphthalamide layer, the thickness of the polyphthalamide layer being five to ten times greater than the thickness of the fluoropolymer layer. The polyphthalamide layer can be directly in contact with the fluoropolymer and a bonding layer of polyamide can also be present between these two main layers.

Abstract: A hose including at least one permeation resistant layer, an elastomeric layer overlaying each at least one permeation resisting layer, at least one reinforcement layer overlaying an elastomeric layer, and a cover layer overlaying the at least one reinforcement layer, wherein the at least one permeation resistant layer includes plurality of sublayers of at least two different thermoplastics wherein the sublayers have a thickness of less than 2500 nanometers.

Abstract: A low-permeability resin hose which is less permeable to automotive fuel or refrigerant, and excellent in interlaminar adhesion and flexibility. The low-permeability resin hose comprises a tubular low-permeability layer formed by using the following component (A); and an outer layer formed by using the following component (B) on an outer peripheral surface of the low-permeability layer: (A) an alloy material wherein an island phase (domain) comprising modified high-density polyethylene resin is dispersed in a sea phase (matrix) comprising an ethylene-vinyl alcohol copolymer; (B) polyamide resin having a high amino value.

Abstract: A pipe comprises an outer surface and an inner surface, where the inner surface includes an abrasion resistant material layer covering a substantial portion thereof. An adhesive layer affixes the abrasion resistant material layer to the inner surface. The abrasion resistant layer can reduce and prevent erosion-corrosion of the inner surface of a pipe transporting slurry.

Abstract: A fuel tube including a laminate of an inner layer and an outer layer, the inner layer being made of a resin composition containing a PPS resin (or an MXD6 resin) as a main component but substantially containing no olefin polymer component, the outer layer being made of a resin composition containing a PPS resin (or an MXD6 resin) as a main component and substantially containing an olefin polymer component, wherein the inner layer and the outer layer are laminated so as to be substantially self-bonded to each other without interposition of any adhesive agent.

Abstract: A fuel hose which is excellent in antistatic property, sour gasoline resistance, a sealing property and the like. The fuel hose includes a polyamide resin inner layer 1 and an electrically conductive coating layer 2 which is formed by the following essential components (A) to (C): (A) fluororubber; (B) an electrically conductive agent; and (C) a crosslinking agent including (a) polyhydroxy aromatic compound and a quaternary ammonium salt or (b) an amine crosslinking agent, the electrically conductive coating layer being provided on the inner peripheral surface of the polyamide resin inner layer over the entire length thereof.

Abstract: A multi-layered tube comprising a first inner polymeric tubular structure, a second foamed polymeric structure containing a plurality of short or long reinforcing elements dispersed therein and, optionally, a third cover layer on the outer surface of the reinforcing layer; and a method for manufacturing the multi-layered hose are disclosed.

Abstract: A resin composite hose of curved shape includes a resin layer having permeation resistance to a transported fluid and serving as a barrier layer, an inner rubber layer as an inner surface layer on an inner side of the resin layer and an outer rubber layer on an outer side of the resin layer. The resin composite hose has one axial end that is larger in diameter than the other axial end thereof. The resin composite hose has at least one curved portion. The curved portion is formed in a shape of progressively and continuously increasing diameter from a curve beginning end with a small diameter near the other axial end of the resin composite hose to a curve terminal end with a large diameter near the one axial end thereof.

Abstract: The invention is a first colorless and chemically-inert tubing concentrically adhered to an outer colored and chemically-inert tubing such that the inner tubing remains entirely chemically inert while the jacket tubing provides color coding as to first colorless tubing inner diameter. A co-extruder to concurrently and concentrically produce a first colorless and chemically-inert tubing concentric and a colored and chemically-inert jacket tubing such that the two tubings are adhered together at the instant of production is also provided.

Abstract: Pipe or tubing of crosslinked polyethylene (“PEX”) containing less than 2% by wt. carbon black provides improved resistance to oxidizing agents such as chlorine and hypochlorous acid in water. The pipe may be further protected with a thin tubular core (inner layer) of high density polyethylene or chlorinated polyethylene. The pipe may optionally have an oxygen barrier layer, such as poly(ethylene-co-vinyl alcohol) (“EVOH”), contiguously disposed radially outward from the carbon-containing PEX layer. The pipe is suitable for potable water applications and for hot water radiant heating systems.

Abstract: A twin-wall pipe comprises an internal pipe and an external pipe. The external pipe is corrugated, having elevations and troughs. The twin-wall pipe is further provided with a socket. In a transition portion towards the twin-wall pipe and the socket, provision is made for at least one overflow passage which interconnects the clearance between the external pipe and internal pipe in the vicinity of the transition portion and an adjacent elevation.

Abstract: A flexible fuel hose having improved fuel vapor barrier properties wherein the fuel hose comprises a first fluoropolymer layer forming a first barrier tubular structure and a second fluoropolymer layer forming a second tubular structure around the first barrier tubular structure; and a method for the manufacture of such hose are described.

Abstract: A medical tubing is disclosed which includes a first material extending between proximal and distal ends of the tubing and which defines a lumen of the tubing. The tubing also includes a second material extending between at least portion of the distance between the proximal and distal ends of the tubing and that is embedded in the first material. The second material is fractured. The first material is flexible and the second material is relatively rigid and brittle and the two materials combined to provide a medical tubing that exhibits strain softening behavior.

Abstract: A duct board or duct liner comprises: an insulating layer formed from fibrous material bound with a resin binder, an outer facing layer adhered to an outer surface of the insulating layer, and a water repellant mat facing adhered to an interior surface of the insulating layer opposite the outer surface to form a duct board material. The mat facing provides sufficient water repellency to repel a mixture of about 40% isopropanol and about 60% water. The duct board or duct liner material may be formed into a tubular shape capable of conducting air, with the mat facing on the interior of the tubular shape.

Abstract: A multi-layered pipe of arbitrary length and cross-section is produced by co-extrusion of a segmented thermoplastic copolyester elastomer (COPE) outer body over the exterior surface of an annular tubular core of CPVC/PVC having a wall thickness, measured in the radial direction, in the range from about 0.95 mm (38 mils) to about 1.375 mm (55 mils). The COPE is cohesively bonded to the annular core coextensively with essentially the entire length of the pipe. Though the COPE is easily degraded in contact with water, and CPVC and blends of CPVC with less than 25% by weight of PVC are typically rigid when extruded as pipe, a laminated pipe of COPE and CPVC/PVC with the specified wall thickness and overall dimensions which in the laminated pipe satisfy an applicable plumbing code (SDR-11 in the U.S.) has essentially the same performance characteristics as commercially available CPVC pipe which is a monolayer and not a laminate.

Abstract: The present invention relates to a hose comprising: a thermoplastic fluoropolymer barrier layer; and a rubber layer adjacent to the barrier layer, the rubber layer comprising 100 parts by weight of an elastomer comprising FKM fluoroelastomer; from about 1 to about 15 parts by weight, per 100 parts by weight of elastomer, of at least one acid acceptor selected from the group consisting of magnesium oxide, calcium hydroxide, litharge, dibasic lead phosphite, calcium oxide, and zinc oxide; from about 1 to about 6 parts by weight, per 100 parts by weight of elastomer, of at least one diamine curative; and from about 1 to about 10 parts by weight, per 100 parts by weight of elastomer, of at least one of a hydrotalcite or tricalcium aluminate hexahydrate; wherein the weight ratio of the at least one acid acceptor to the at least one hydrotalcite ranges from about 1 to about 5.

Abstract: A multi-layered pipe of arbitrary length and cross-section is produced by co-extrusion of a lower polyolefin (C2–C4) outer body over the exterior surface of a tubular core of randomly, partially randomly, or blocky chlorinated lower polyolefin, the core having a wall thickness, measured in the radial direction, in the range from about 0.025 mm to 5 mm. The tubular core is coextensive with essentially the entire length of the pipe. The tubular core comprises a major proportion by weight of the randomly chlorinated polyolefin (r-CPO), or, partially randomly chlorinated polyolefin (pr-CPO), or, a blocky chlorinated polyolefin (b-CPO), any of which may be blended with a minor proportion by weight of a blending ingredient. The r-CPO, pr-CPO or b-CPO, or a blend thereof, each has an extrusion temperature in the same range as that for the corresponding non-halogenated polyolefin, namely in the range from about 150° C. to 250° C.

Abstract: A fuel cell hose which is superior in flexibility (low-temperature flexing property) and in barrier properties against hydrogen gas or water, and causes no defects such as buckling or cracking when press-fitting of a connector. The hose comprises an inner layer 1 in contact with fluid and an outer layer 3 formed on an outer peripheral surface of the inner layer, the inner layer being formed by a material (A) comprising a polyolefin resin and a styrene-isobutylene block copolymer and the outer layer being formed by a material (B) comprising a polyamide resin and a styrene-isobutylene block copolymer.

Abstract: A fuel cell hose which is superior in flexibility (low-temperature flexibility) and in barrier performance against hydrogen gas or water without causing a defect such as buckling or cracking at the time of the press-fitting of a connector. The fuel cell hose comprises an inner layer in contact with fluid, a barrier layer formed on an outer peripheral surface of the inner layer and an outer layer formed on an outer peripheral surface of the barrier layer. The inner layer is made of a material (A) containing a polyolefin resin and a styrene-isobutylene block copolymer as essential components, the barrier layer is made of a material (B) containing an ethylene-vinyl alcohol copolymer and a modified polyolefin resin as essential components and the mixing ratio by volume of the ethylene-vinyl alcohol copolymer to the modified polyolefin resin is in the range of 95/5 to 30/70, and the outer layer is made of a material (C) containing a polyamide resin as an essential component.

Abstract: Provided is an air duct suitable for conducting a flow of air. The air duct includes a central layer formed from a fiber glass. The central layer has an inner surface and an outer surface. The air duct also includes a liner layer arranged adjacent to the inner surface of the central layer. The liner layer is formed from an organic material and is substantially free of fiber glass, or is formed from polyester and rayon. The central layer and liner layer are arranged to define a channel for conducting a flow of air.

Abstract: Two-layered or three-layered polymer tubing for use as a pressurized fluid conduit in automobiles can be either walled or have walls continuously or partially corrugated. The tubing has an outer layer of a hard polymer molding material and an inner layer of a soft rubber-like polymer or a polymer mixture. The inner layer can be provided on the innerside with a layer of a thermoplastic adhesion-modified elastomer composition. The a materials are selected for the layers to provide a so-called “hard-soft-combination”. The rubber-like polymer composition has a hardness in the range of 30 Shore A to 60 Shore D, especially of about 30 Shore A to 90 Shore A, the compositions being selected so that they are processable by coextrusion or the so-called conex method and adhere directly to each other non-positively or positively fitted, i. e. without additional bonding agent, without delaminating.

Abstract: A laminate tape useful for insulating pipes, lines and the like is constructed of a tacky first layer containing asphalt and an insulative filler such as granulated cork adhered to a flexible second layer that is less tacky. The flexible second layer contains a rubber such as butyl rubber.

Abstract: A multilayer resin pipe includes a plurality of resin layers. At least the innermost resin layer is made of a resin having a low permeability. At least one of the resin layers of the multilayer resin pipe is an electrically conductive layer having electrical conductivity and containing electrically conductive filamentous filler.

Abstract: A pipe for transporting automobile fluids includes a smooth inner tube (1) based on a fluorinated thermoplastic material, a corrugated outer tube (2) in contact with the inner tube via the inside peaks (3) of its corrugations, and made of a polyamide-based thermoplastic material, and elements for connecting the outer and inner tubes together.

Abstract: A multilayer PEX pipe having improved resistance to oxidizing agents in water. The pipe has a thin tubular core (inner layer) of high density polyethylene and an outer layer of crosslinked polyethylene. The pipe may optionally have an oxygen barrier layer, such as poly(ethylene-co-vinyl alcohol) (“EVOH”), contiguously disposed radially outward from the PEX layer. The pipe is suitable for potable water applications and for hot water radiant heating systems.

Abstract: A laminated fluid transfer hose construction having one or more intermediate metal barrier layers is provided, as well as, a hose assembly employing the laminated hose construction and coupling means. The inventive hose construction demonstrates improved barrier properties in the form of improved fluid permeation resistance, as well as improved durability. The hose construction may be convoluted yet still provide exceptional resistance to undesirable buckling, kinking and fatigue with no increase in fluid permeation due to necessary “thinning” of the walls to produce “flex.

Abstract: A rubber hose material for providing a rubber hose excellent in mechanical strength and with an intrinsic property (elongation) of rubber retained. The rubber hose material is formed by blending an ethylene-olefin resin (component (B)) as an organic filler into an ethylene-propylene rubber (component (A)).

Abstract: The present invention relates to a hose construction containing a thermoplastic fluoropolymer barrier and an epichlorohydrin rubber layer. The hose comprises (A) a rubber layer comprising (1) 100 parts by weight of elastomer comprising epichlorohydrin rubber; and (2) from about 10 to about 100 parts by weight, per 100 parts by weight of elastomer, of silica; wherein the rubber layer is cured with from about 0.1 to about 1.8 parts by weight, per 100 parts by weight of elastomer, of at least one peroxide; (B) a barrier layer adjacent to the rubber layer, the barrier layer comprised of at least one thermoplastic fluoropolymer.

Abstract: A vehicle brake hose has inner tube rubber layer 1, first and second braided fiber reinforcing layers 2, 3 that are provided outside the inner tube rubber layer 1, and an outer tube rubber layer 5 that is provided outside the second braided fiber reinforcing layer 3. The first braided fiber reinforcing layer 2 is tightly braided and the second braided fiber reinforcing layer 3 is loosely braided. The first and second braided fiber reinforcing layers 2, 3 are bonded through an adhesion layer 4 to the outer tube rubber layer 5.

Abstract: A pipe or liner for use in the oil and gas industry that comprises a melt-mixed bend of polyamide and grafted fluoropolymer having polar functionality where the grafted fluoropolymer having polar functionality exists as a discontinuous phase that is dispersed in a polyamide matrix. The pipe or liner has enhanced resistance to the permeation of hydrocarbons relative to polyethylene. A further embodiment is fuel lines that comprise a melt-mixed bland of polyamide and a grafted fluoropolymer having polar functionality.

Abstract: The apparatus for joining and sealing conduits, includes edge trim, a sleeve, and a retaining element. The edge trim is shaped to mount upon and engage an end of a conduit. The sleeve extends between the conduits and at least partially surrounds the edge trim. The sleeve may be made of compressible material, such that when the retaining element surrounds a portion of the sleeve and the edge trim, the retaining element generally compresses the portion of the sleeve portion underlying the retaining element and displaces the sleeve material to expand on either side of the retaining element and limit movement of the retaining element. The method of joining and sealing conduits includes mounting the edge trim and a retaining element upon an end of a conduit, extending a sleeve between the conduits, and sliding the retaining element over the sleeve toward the end of the conduit.

Abstract: A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.

Abstract: An object of the present invention is to provide ultra-low permeation hoses which have at the interior thereof a refrigerant barrier layer that consists in large part of a metal layer and is capable of conforming to hose deformation, which have an excellent resistance to refrigerant permeation (i.e., barrier properties to refrigerants), particularly an excellent CO2 permeation resistance and an excellent heat resistance when CO2 is used as the refrigerant. The object can be accomplished by an ultra-low permeation hose having at least a refrigerant barrier layer and a rubber layer and/or a resin layer; wherein the refrigerant barrier layer is a laminated film comprising a resin layer and, on the outside thereof, a metal layer, which the resin layer and the metal layer are bonded together by a polyamide-epoxy reactive adhesive.

Abstract: A method of insulating ducts is described including laminating a reinforcement fabric to a fibrous insulation board, lifting at least a portion of the reinforcement fabric from the fibrous insulation board, applying a first layer of a mastic coating to the fibrous insulation board, embedding the reinforcement fabric into the first layer of mastic coating, and applying a second layer of the mastic coating to the outside surface of the reinforcement fabric. The reinforcement fabric is laminated to the fibrous insulation board using an adhesive material.

Abstract: A corrosion resistant multi-layer tube comprises a metal tube; a zinc layer bonded to the metal tube outer surface; a surface treatment layer bonded to the zinc layer; a priming layer; a first polymeric layer bonded to the priming layer; a second polymeric layer bonded to the first polymeric layer. A process for manufacturing the tube comprises the step of extruding multiple layers of a melt-processible thermoplastic to a pretreated metal tube having an external surface with at least a zinc based coating, a sealant coating on top of the zinc based coating, and a primer coating on top of the sealant coating. The primer coating is preferably applied by an airless spray system in a closed atmosphere, wherein substantially no volatile organic compounds escape into the atmosphere. The polymeric layer(s) remain adhered to the metal tube, even when exposed for prolonged periods to aggressively corrosive environments.

Abstract: The present invention provides coating materials (14), insulation-containing building material products bearing the materials and methods for applying the coatings to the building material products. The coating materials (14) possess one-way “breathability” characteristics with respect to water and aqueous solutions. That is, the coatings are essentially impermeable to liquid water and permeable to water vapor. Vapor from water insulation coated by the material may thus pass through the coating, whereas liquid water is effectively prevented from passing through the coating and entering the insulation.

Abstract: The invention concerns a plastic-based multilayer structure, in particular for making tubes or conduits for transporting liquid fluids such as alcohol, liquid fuels derived from petrol, fuels containing oxygen compounds such as, for instance alcohol. More particularly it concerns a multilayer structure comprising an external layer (A) formed from a polyamide based composition with and an internal adjacent layer (B) formed from a polyfluorovinylidene based composition.