MANUFACTURE OF CORRUGATED PIPE

PURPOSE:To make manufacturing speed of a corrugated pipe faster, by a method wherein both the edge fringes in a widthward direction of a plate body corrugated in a swelling state in its longitudinal direction are joined by putting the edge fringes upon each other. CONSTITUTION:A flat plate, which is...

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Bibliographische Detailangaben
1. Verfasser:	OZASA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CABLES CONDUCTORS ELECTRICITY INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INSULATORS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To make manufacturing speed of a corrugated pipe faster, by a method wherein both the edge fringes in a widthward direction of a plate body corrugated in a swelling state in its longitudinal direction are joined by putting the edge fringes upon each other. CONSTITUTION:A flat plate, which is in a high-temperature state, extruded continuously by extrusion molding is corrugated in its longitudinal direction by pressing a mold provided with corrugated unevenness in its longitudinal direction against both sides of the flat plate or passing the flat plate through a pair of rolls. Both the edge fringes in a widthward direction of the corrugated plate body 1 like these are bent continuously through U-O molding or O molding and both the edge fringes are joined each other. As for joining methods, high-frequency dielectric weld, hot-air welding, ultrasonic weld, weld by a heating unit, flowed-in welding of molten resin, weld by light energy, and joining by an adhesive agent and a solvent are used.