A resin material, in which the elongation at break in an environmental condition at a predetermined temperature of 100? C. or higher and 150? C. or lower is 50% or more, a content of a plasticizer is 3 mass % or less with respect to the total mass of the resin material, a strength at break in the environmental condition at this predetermined temperature is 5 MPa or more, the elongation at break is 500% or less, and a 10% modulus is 3 MPa or less, is formed into a tubular form and used as an inner surface layer, an intermediate layer, and an outer surface layer of a hose, and components of an air conditioner are connected through the hose. Such resin material, and also a hose including the resin material, which are mainly used for an air conditioner installed in a vehicle, have improved durability in a high temperature environment.

An irrigation pipe is formed from a sheet rolled into a tube about a longitudinal axis, and having overlapped lateral margins. The sheet has a fabric layer and an outer layer formed on the fabric layer. The pipe includes axially extending load bearing members which are in contact with the outer layer. The load bearing members are lacking at least in the vicinity of one or both of the overlapped lateral margins.

Fuel lines including an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer. The cover layer and/or inner tube are formed from compositions including a blend of chlorinated polyethylene (CPE) and chloroprene rubber (CR), where the CPE and CR are blended in a CPE:CR weight ratio of from 20:1 to 1:1. The compositions also include a curing system containing tetrabutylammonium bromide (TBAB), magnesium oxide (MgO), and one of a thiadiazole or thiotriazine. In some aspects, the TBAB is incorporated in an amount of from 0.2 phr to 2.5 phr, the MgO incorporated in an amount of from 5 phr to 20 phr, and the one of a thiadiazole or thiotriazine incorporated in an amount of from 0.5 phr to 5 phr.

A high pressure hose having steel wires with different load elongation properties, which are introduced into the subsequent reinforcement layers of the hose. The difference in load elongation is quantified by the E-ratio of the wire that is equal to the tensile strength divided by the elongation at break. The steel wires of the radially outermost steel wire reinforcement layer have the highest E-ratio, while the radially innermost steel wire reinforcement layer has the lowest E-ratio. The E-ratio of any steel wire reinforcement layer is not lower than the E-ratio of any inner laying steel wire reinforcement layer. The E-ratio of the steel wires can be influenced by either a thermal treatment or by a mechanical treatment. In the mechanical treatment crimps or bends can be introduced into the wire by guiding them through a preforming device.

A fluid delivery system includes one or more smart hoses. A smart hose of the one or more smart hoses includes a fluid conduit configured to deliver a fluid. The smart hose further includes a first electrically conductive element configured to deliver electricity through a length of the smart hose.

The invention relates to a protective sheath (50) for covering a fluid-transporting pipeline, comprising a flame-proof, non-inflammable layer (52) and a heat insulation layer (54) arranged beneath the non-inflammable layer, the non-inflammable layer consisting only of carbon and the heat insulation layer comprising a knitted fabric, the knitted fabric comprising a plurality of stitches and air trapped within the plurality of stitches such that the heat insulation layer comprises at least 70 vol. % of air. Furthermore, the non-inflammable layer comprises carbon fibers providing 100% coverage in order to protect the heat insulation layer from contact with flames.

A hose including an inner tube, a reinforcement layer disposed outwardly from the inner tube, and a cover layer disposed outwardly from the reinforcement layer, in which the hose meets requirements of NSF/ANSI/CAN 61 standard, and in some aspects, at least the inner tube is devoid of nitrosamines. In some cases, the inner tube includes ultra-high molecular weight polyethylene. In some other aspects, the inner tube includes other thermoplastic material. In some cases, the cover layer is based on a rubber material. Also, the hose may contain water within a lumen defined inside the inner walls of the inner tube.

Provided is a hydrogen-filling hose including an inner layer, a reinforcing layer, and an outer layer, the hydrogen-filling hose being characterized in that the inner layer includes a thermoplastic resin composition including a matrix that includes a polyamide resin and a domain that includes a modified styrene elastomer, the modified styrene elastomer content of the thermoplastic resin composition is 5-50 mass % of all polymer components in the thermoplastic resin composition, the reinforcing layer includes at least one layer that includes steel wire, and the outer layer includes a thermoplastic elastomer.

A hose includes an inner tube containing an alloy of NBR/PVC mixed with ECO, and the inner tube has a tube wall thickness of from 2 mm to 4 mm. A first reinforcement layer surrounds the inner tube, and includes a first yarn layer spiral wound over the inner tube in a first winding direction, as well as a second yarn layer spiral wound over the first yarn layer in a second winding direction opposite the first winding direction. A friction layer is disposed over the first reinforcement layer. A second reinforcement layer surrounds the friction layer, and includes a third yarn layer spiral wound over the friction layer in a third winding direction, and a fourth yarn layer spiral wound over the third yarn layer in a fourth winding direction opposite the third winding direction. A cover layer is disposed over the second reinforcement layer.

A method of making a rubber hose includes the steps of providing an inner rubber layer including a hollow part, and forming a first braided layer on the inner rubber layer by braiding a plurality of first yarn materials including a vinylon fiber made by a dry process such that the braided first yarn materials includes a braid formed in a three-over, three-under pattern. Next, a middle rubber layer is formed on the first braided layer. A second braided layer is then formed on the middle rubber layer by braiding a plurality of second yarn materials including a vinylon fiber made by a wet process such that the braided second yarn materials includes a braid formed in a two-over, two-under pattern. Finally, an outer rubber layer is formed on the second braided layer.