A refrigerant hose has an innermost tube defining a lumen therein, and the innermost tube is based on one of a hydrogenated nitrile butadiene rubber (HNBR), an HNBR containing polymer blend, or a copolymer thereof, which is cured with a phenol-formaldehyde resin. The refrigerant hose may further include an optional permeation inhibiting layer which surrounds the innermost tube when incorporated, a reinforcing layer disposed outwardly from the innermost tube and the optional permeation inhibiting layer when this layer is used, and a cover layer disposed outwardly from the reinforcing layer. The innermost tube has a volume swell percentage of 10% or less when exposed to polyolester oil or polyalkylene glycol oil for 168 hrs @ 125° C. Additionally, the innermost tube is devoid of peroxide and may further be devoid added elemental sulfur, sulfur donors and/or additives containing sulfur within their molecular structures.

The present invention relates to a thermoplastic hose, consisting of a flexible hose body (12; 212; 312; 612) and at least one reinforcing element (14; 214; 314; 614), which is arranged helically on the external face of the hose body (12; 212; 312; 612), wherein the at least one reinforcing element (14; 214; 314; 614) is made of an extruded material and is rigidly joined to the external face of the hose body (12; 212; 312; 612) by means of a fusion bond, wherein the hose body (12; 212; 312; 612) is an extruded hose body (12; 212; 312; 612). The invention also relates to a device and a method for producing such a hose.

Flexible pipe body, a flexible pipe and a method of manufacturing pipe body are disclosed. The flexible pipe body comprises a tensile armour layer and a supporting layer radially outside, or radially inside, and in an abutting relationship with the tensile armour layer. The supporting layer comprises a helically wound constraining tape element and a helically wound electrically conductive tape element.

Hoses include an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, where the cover layer and/or the inner tube includes a cured composition having a sustainable content and formed from a mixture including EPDM/EPR sustainable polymer and a sulfur or peroxide based curing system. In some cases, the EPDM/EPR sustainable polymer has ethylene monomer derived from one or more renewable sources, such as, ethylene monomer derived from sugar cane. The mixture may further include one or more of recovered carbon black and sustainable oils from renewable sources. The hose embodiments may also include the reinforcement layer formed of fibers from sustainable material. The hose may contain the sustainable content in an amount of up to 75% by weight based upon total hose weight, or even greater than 25% by weight based upon total hose weight.

The present invention generally relates to reinforcement assemblies for matrix materials, and more specifically to reinforcement assemblies for continuous loop members with reinforced matrix materials.

A flexible ventilation duct production method includes forming an inner layer using at least one of aluminum PET, polyester, metalized OPP, metalized polyester and PVC; forming an insulation layer comprised of rubber, polyethylene liners, polyester fibers or similar insulation materials; assembling a steel wire taking shape from being spirally wound around a cylinder; forming an outer layer using at least one of aluminum PET, polyester, metalized OPP, metalized polyester and PVC; and laminating by being wound to a constantly rotating cylindrical shaft in a certain order to form an integrated, holistic structure between all the factors, which is constantly rotated around its own axis in strip plates and is constantly fed to the mentioned cylindrical shaft, by meanwhile providing complete lamination with the applied chemicals.

Techniques for implementing a system that includes pipe segment tubing and a pipe fitting to be secured to the pipe segment tubing. The pipe segment tubing includes a reinforcement strip implemented between an internal pressure sheath layer and an outer sheath of the pipe segment tubing. The pipe fitting includes an inner fitting body to be inserted between the internal pressure sheath layer and the reinforcement strip of the pipe segment tubing. Additionally, the pipe fitting includes an outer fitting body to be disposed circumferentially around the inner fitting body to define a potting cavity between an inner surface of the outer fitting body and an outer surface of the inner fitting body, in which a hole is formed through the reinforcement strip of the pipe segment tubing before the reinforcement strip is anchored in the potting cavity via cured potting material.

An object of the present invention it to provide a novel fluororesin that has excellent mechanical strength and chemical resistance, and very low permeability at high temperature. The fluorine resin is a copolymer that includes copolymerized units derived from tetrafluoroethylene, vinylidene fluoride, and an ethylenically unsaturated monomer other than tetrafluoroethylene and vinylidene fluoride. The fluororesin has a storage modulus E′, as measured at 170° C. by a dynamic viscoelasticity analysis, in the range of 60 to 400 MPa.

The present general inventive concept, in some of its many example embodiments, relates to a line, in particular for the conduction of gaseous media under high pressure, preferably in the range of 150 bar to 400 bar, very preferably in the range of 200 bar to 350 bar, in particular 200 bar to 250 bar, having at least one high-pressure line and at least one gas recirculation line, characterized in that the gas recirculation line is arranged, preferably coaxially, inside the high-pressure line and the gas recirculation line comprises a stabilization device, in particular in spiral form, preferably a steel spiral, very preferably a normal steel spiral or a stainless steel spiral.

A hose assembly includes an inner core tube, a connector including a stem portion inserted into a distal end of the inner core tube, an outer metal tube substantially coaxial with and surrounding the inner core tube, and a collar substantially coaxial with and surrounding the distal end of the inner core tube. The outer metal tube terminates at a distal end axially inward of the distal end of the inner core tube. The collar includes a flared first end welded to the distal end of the outer metal tube and a second end welded to the connector.