Mold blocks of a pipe molding corrugator are provided with enhanced cooling capability due to the provision of cooling fins on the side portions of each mold block. Air can be forced between the fins and some exhaustion of the air can occur at the base of the fins adjacent the mold block cavity. With this arrangement, enhanced cooling of mold blocks is possible.

Mold blocks of a pipe molding corrugator are provided with enhanced cooling capability due to the provision of cooling fins on the side portions of each mold block. Air can be forced between the fins and some exhaustion of the air can occur at the base of the fins adjacent the mold block cavity. With this arrangement, enhanced cooling of mold blocks is possible.

A modular plastic pipe formation apparatus to extrude plastic pipe is disclosed and includes a plurality of modules each having a transportable container and at least one component of the pipe formation apparatus located therein. The plurality of modules are aligned in a predetermined manner during formation of plastic pipe with the components aligned for pipe extrusion. The apparatus may also include a closed circuit fluid cooling system to provide cooling fluid to some of modules to cool the pipe being formed, the cooling circuit may flows in a counter direction to the direction of pipe forming in the pipe formation apparatus.

Disclosed is a liquid line improved in terms of effective producibility with a high level of process reliability and quality assurance, said liquid line comprising at least one corrugated hose and at least one connection piece for connecting the liquid line to a further component, wherein the corrugated hose and the connection piece are produced from plastic and are connected to one another via at least one welded connection, wherein the welded connection is produced by means of a laser welding process, wherein the welded connection is tight at least up to a defined operating pressure in the liquid line and wherein a stop is formed in the connection piece and defines an axial end position of the corrugated hose in the connection piece.

A laminate, containing two or more polyolefin resin layers, wherein at least one polyolefin resin layer (A) contains a cellulose fiber including a cellulose fiber having a fiber length of 0.3 mm or more dispersed in the layer; a content of the cellulose fiber in the polyolefin resin layer (A) is 1% by mass or more and less than 60% by mass; and wherein a polyolefin resin layer (B) different from the polyolefin resin layer (A) is laminated in contact with the polyolefin resin layer (A).

A pressure hose (1) for a water-carrying system is shown and described, especially for connecting sanitary taps or for connecting parts of the water-carrying system, having a corrugated inner hose (2) made of plastic, wherein at least one hose end (3, 5) of the pressure hose (1) is provided with a connecting piece (4, 6), designed such that it differs from the inner hose (2), for joining the pressure hose (1) to a complementarily designed connecting piece of a sanitary tap and/or a part of the water-carrying system. According to the invention, it is provided that the inner hose (2) and the connecting piece (4, 6) are formed as one piece and the inner hose (2) and the connecting piece (4, 6) are preferably produced via extrusion in a common extrusion process.

A resin filler tube includes: a tubular body; a flange that protrudes radially outward from an end of the tubular body on a fuel tank side, over an entire circumference, has a plurality of layers that are of same kinds as those of the tubular body, has outer faces all of which are formed of an outermost layer material, and has a first end face, in an axial direction, forming a weld surface to be welded to an outer circumferential edge of an opening hole of the fuel tank; and a leading end tubular portion extending from a radially inner portion of the flange toward a leading end of the filler tube, and having an annular recessed groove formed at a portion of an outer circumferential surface on the flange side, over an entire circumference, for storing a melt burr generated in welding of the first end face.

A device for producing plastic pipes may include an extruder with a die head and a corrugator, into which a molten plastic tube is introduced by means of the die head to mold the plastic pipe, wherein the corrugator has a molding section, in which molding jaws are guided in pairs in the production direction. In an inlet section of the corrugator, the molding jaws are brought together to form molding jaw pairs towards the start of the molding section, and in an outlet section of the corrugator, the molding jaw pairs are moved apart from each other from the end of the molding section. The guiding apparatus has a guide and/or temperature-control element apparatus having a temperature-control medium channel apparatus through which temperature-control medium can flow, and a guide and/or temperature-control surface apparatus, which faces the outer side of the molding jaws passing through, transferring heat.

Breathable medical circuit components and materials and methods for forming these components incorporate breathable foamed materials that are permeable to water vapor and substantially impermeable to liquid water and the bulk flow of gases. The materials and methods can be incorporated into a variety of components, including tubes, Y-connectors, catheter mounts, and patient interfaces and are suitable for use in a variety of medical circuits, including insufflation, anesthesia, and breathing circuits.

A hose arrangement for a motor vehicle may include a flexible elongated bellows including a plurality of radially orientated pleats and two axial longitudinal ends. The hose arrangement may also include at least one reinforcement rib which, on an outside, is coupled to a pleat tip of a respective pleat of the plurality of pleats in a material-bonded manner via two-component injection moulding. The at least one reinforcement rib may engage about the respective pleat in a circumferential direction. The at least one reinforcement rib may have at least two rib segments disposed following one another in the circumferential direction. Each of the at least two rib segments may radially cover the pleat tip by a segment angle of 30° to 310° in the circumferential direction.