A method for preparing an article includes at least a first component of a polyolefin in conjunction with a second component of a polymer made by ring-opening metathesis polymerisation of norbornene type monomers. The method includes pre-treating a surface of the first component, applying a ring-opening metathesis polymerisable mixture of norbornene type monomers and a catalyst to the surface, and curing the ring-opening metathesis polymerisable mixture in contact with the surface, wherein the ring-opening metathesis polymerisable mixture has a η.sub.1000 at 30° C. of more than 9 sec. Articles such as a pipe line field joint or a protective element for a concrete tunnel lining element can be made using the method.

Disclosed herein is a piping system for an air conditioner, in which a refrigerant pipe being an air conditioning piping of a vehicle and a flange member are each made of a plastic material, and the refrigerant pipe and the flange member can be connected by laser fusing. That is, the present disclosure provides the piping system for an air conditioner, in which the refrigerant pipe and the flange member are each made of a plastic material having a vibration insulation effect and are connected by laser fusing which can prevent damage so that an effect of weight reduction and vibration insulation can be provided and a pressure loss of a refrigerant fluid can be minimized by maintaining a diameter of the refrigerant pipe to be constant with respect to an overall length of the refrigerant pipe.

A fitting or connector for use in constructing a tubing assembly is made by bonding an olefin gasket to an end face of a polypropylene fitting member. The gasket is bonded to the fitting member via a heat fusion technique that causes localized melting together of the gasket and the fitting and generates a composite fitting or connector.

A vehicle chassis is provided. The vehicle chassis may comprise one or more vehicle chassis modules or chassis substructures that are formed from a plurality of customized chassis nodes and connecting tubes. The customized chassis nodes and connecting tubes may be formed of one or more metal and/or non-metal materials. The customized chassis nodes may be formed with connecting features to which additional vehicle panels or structures may be permanently or removeably attached. The vehicle chassis modules or chassis substructures may be interchangeably and removeably connected to provide a vehicle chassis having a set of predetermined chassis safety or performance characteristics.

A conduit connector and method of construction thereof is provided. The conduit connector includes a body having a through passage extending between open opposite ends and a tubular male port section extending axially to an end face of one of the ends. The tubular male section has an outer surface configured for connection to a tubular conduit and an inner surface bounding at least a portion of the through passage. The end face has an outer annular first surface extending radially inwardly from the outer surface and an inner annular second surface extending radially inwardly from the annular first surface toward the inner surface. The annular second surface forms a counterbore that is recessed axially a first distance from the annular first surface, wherein an annular bead extends from one of the annular second surface or the inner surface, with the entirety of the annular bead remaining recessed below the annular first surface.

The invention relates to a thermoplastic elastomeric bellow duct (10) having a corrugated duct segment (12) interposed between two elbowed segments (14, 18), wherein at least one of the elbowed segments (18) is made of thermoplastic elastomeric and connected to an end section (22) of the corrugated duct segment (12) by overmolding the elbowed segment (18) over the end section (22) of the corrugated duct segment (12), and wherein the end section (22) of the corrugated duct segment (12) includes a guiding and sealing arrangement (50) pointing away from the corrugated duct segment (12) in a radial direction (32). The invention further relates to an air duct (80) having such a thermoplastic elastomeric bellow duct (10).

A polymer pipe has a length between a first end and a second end. The length and the first end have a first diameter and the second end is a belled end having a second diameter larger than the first diameter. An insert device is received within the second end and has an annular body and a spline groove formed in the annular body and facing radially inward. The insert device is pre-installed in the belled end during the belling process.

A hose cell assembly system for fabricating hoses with integrated hose connections is disclosed. The hose cell assembly system includes an injection mold; and an injection molding machine configured to form an integrated hose connection onto an end of a plastic tubing using an injection molding process using the injection mold, where the plastic tubing is formed by a blow molding process.

An induction connection sleeve for fusion joining of plastic pipes includes a sleeve body having a first and a second receiving portion for receiving first and second connection portions of the plastic pipes to be connected, a first induction heating element and a second induction heating element. The sleeve body includes an inner part, which inner part forms the two receiving portions and on which the induction heating elements are accommodated in such a way that the recesses of the induction heating elements are penetrated by the inner part and are flush at their outer lateral surfaces with the inner part in the area of the induction heating elements. The sleeve body further includes an outer part which is connected to the inner part in a bonded manner and surrounds the outer lateral surfaces of the induction heating elements.

Disclosed are a method, an extruder and an injection molding machine for manufacturing a clamping ring, solving problems that products produced by an extrusion method needs to be processed in two steps. The key point of technical solutions lie in a molding step of acting on a pipe member in a plastic melt state via a molding die set, to form a clamping ring from the pipe member; an injection mold injects plastic materials having memory properties through an injection gate to form a pipe member in the molding cavity, the pipe member comprises a clamping ring and a sealing film provided on one end of the clamping ring, the hydraulic mechanism drives a molding cutter to cut out a joint of the sealing film and the clamping ring in a plastic melt state, thereby a limit end is formed at one end of the clamping ring.