HOLLOW PROFILE USED IN THE MANUFACTURE OF A PIPE

A hollow profile (1) used in the manufacture of a spirally wound double-walled thermo-plastic pipe, which hollow profile has essentially a rectangular cross section, two side walls (5) and an outer wall (3) and an inner wall (4) limiting a cavity (2) within. In the hollow profile the wall that is in...

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Bibliographische Detailangaben
Hauptverfasser:	SJOBERG, SVEN, VESTMAN, CHRISTIAN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A hollow profile (1) used in the manufacture of a spirally wound double-walled thermo-plastic pipe, which hollow profile has essentially a rectangular cross section, two side walls (5) and an outer wall (3) and an inner wall (4) limiting a cavity (2) within. In the hollow profile the wall that is intended to form the inner wall (4) of the pipe is thicker than the wall (3) of the hollow profile intended to form the outer wall (3) of the pipe. The inner rounding radius (7) of the edges adjacent to the thicker wall (4) of the hollow profile is considerably larger than the rounding radius (6) of the two other edges of the cavity (6) and the inside surface of the thicker wall (4) comprises a rib (8) extending in the hollow cavity of the profile, on the side of the profile forming the inner side of the pipe, in the longitudinal direction of the profile at least essentially along the whole length of the profile.