The present disclosure provides a welded body having a connecting structure formed by welding a first molded body and a second molded body, wherein the first and second molded bodies contain at least one copolymer selected from the group consisting of a tetrafluoroethylene/fluoro (alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer, and wherein the connecting structure has a liquid contact surface to be in contact with a liquid having a solubility parameter of 14 to 35 (MPa).sup.1/2, a welded part formed in the connecting structure is not exposed to the liquid contact surface, and the number of particles of 30 nm or larger to be eluted from the liquid contact surface in the connecting structure is 1,000 particles/ml or less.

A molding system for applying insulation to a pipe employs an elongate mold in which to receive the pipe. A mold adjustment mechanism can adjust a shape of the mold to correspond to a shape of the pipe as the pipe sags in the mold cavity. In a method of insulating the pipe, the shape of the mold is adjusted to correspond to the shape of the sagging pipe and curable material is imparted into the mold while maintaining the adjusted shape of the mold. The elongate mold can include at least one double-walled mold member with an inner form wall, an outer jacket, and a plurality of radial supports that support the outer jacket on the inner form wall in radially spaced apart relation therewith.

A system and method are presented in which a flow of plastic is extruded to obtain nano-sized features by forming multiple laminated flow streams, flowing in parallel through the non-rotating extrusion system. Each of the parallel laminated flow streams are subjected to repeated steps in which the flows are compressed, divided, and overlapped to amplify the number of laminations. The parallel amplified laminated flows are rejoined to form a combined laminated output with nano-sized features. The die exit is formed to provide a tubular shape.

A therapeutic, fitness and sports enhancement device which includes a cylindrically shaped body having a predetermined density and predetermined diameter, the body including a plurality of projections of a predetermined shape. One or more of the predetermined density and the predetermined diameter in combination with the predetermined shape of the projections optimize mobilization of soft tissue structures of the human body.

An injection mold for the manufacturing of at least one tubular plastic part, including a first mold half including a first mold plate and a second mold half including a second mold plate arranged displaceable with respect to each other in an axial direction (Z) between an open and a closed position. The injection mold includes at least one core protruding from the first mold plate and the second mold plate including at least one cavity suitable to receive the core to form a molding cavity in the closed position of the injection mold for receiving molten plastic material therein to form the tubular plastic part. A bushing is arranged in the second mold half adjacent to a dorsal end of the cavity at least partially displaceable with respect to the second mold plate, the bushing including a bore in the closed position suitable to receive a tip of the core.

Provided is a tube body intermediate including: a carbon fiber disposed with respect to an outer circumferential surface of a mandrel so as to extend in an axial direction of the mandrel; and a fixing member having a tubular shape and disposed with respect to the outer circumferential surface of the mandrel so as to cover the carbon fiber. Also provided is a tube body production method including: disposing a fiber body with respect to an outer circumferential surface of a mandrel so that the fiber body extends in an axial direction of the mandrel; disposing a fixing member with a tubular shape with respect to the outer circumferential surface of the mandrel so that the fixing member covers the fiber body; and impregnating the fiber body with a resin on the outer circumferential surface of the mandrel and then heating the resin to mold the resin.

Provided are a hose excelling in a lightweight property and in fatigue fracture resistance, a method for manufacturing the hose, and a hydraulic pump. The hose includes a tube, an interior of the tube being hollow, continuous carbon fibers and/or continuous glass fibers wound around an outer circumference of the tube, and a thermosetting resin present external to the tube. The thermosetting resin has an elastic modulus from 0.5 to 10 MPa, and the continuous carbon fibers and/or continuous glass fibers are impregnated with at least a part of the thermosetting resin. The elastic modulus of the thermosetting resin is a numeric value determined by: heating the thermosetting resin for 2 hours at a curing temperature of the thermosetting resin; then subjecting the thermosetting resin to thermoregulation for two weeks under a condition of a temperature of 23 C. and a relative humidity of 55%; and then performing a measurement in accordance with JIS K7161:2019.

Heterophasic propylene copolymer compositions may include a polymer matrix of a random propylene copolymer and an elastomeric copolymer dispersed in the polymer matrix in an amount ranging from about 10 to 35 wt. %, relative to the weight of the composition. The random propylene copolymer may include one or more comonomers in an amount ranging from about 0.5 to 8.0 wt. % of the random propylene copolymer. The elastomeric copolymer may include propylene and one or more comonomers, where the one or more comonomers are present in an amount ranging from about 15 to 60 wt. % of the elastomeric copolymer. Films may be formed from heterophasic propylene copolymer compositions. Methods of preparing heterophasic propylene copolymer compositions may include performing a multistage polymerization.

A pipe fitting (100) includes a tubular connecting part (101); the tubular connecting part being configured to be inserted into an expanded pipe end section (111) of a pipe (110) having a first circumferential intact sealing region (113) on the inner surface (112) of the pipe end section (111); the tubular connecting part comprising a first radially outwards extending circumferential sealing barb (105) positioned for engaging, when in use, with the first circumferential intact sealing region during shrinkage of the pipe end section for forming a sealing between the pipe fitting and the pipe.

A method of producing a device for protecting a beverage straw is provided. The method includes the steps of providing an outer body mold for use with an epoxy resin to form an outer body of the device. An inner cavity is then bored into the outer body of the device to receive a beverage straw. Finally, a fastener is attached to the device to allow a user quick and convenient access to the device when on the go.