IMPROVEMENTS IN PLASTIC TUBING

A corrugated plastics tubing (10) which may be corrugated on its inner surface as well as its outer surface, has corrugations (12) which define a series of peaks (14) and roots (16) along the tube. The thickness (W1) of the walls (18) of the roots (16) are reduced in thickness from a standard thickn...

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Bibliographische Detailangaben
1. Verfasser:	WITHWORTH, ANDREW JOHN
Format:	Patent
Sprache:	eng
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 PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE 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 corrugated plastics tubing (10) which may be corrugated on its inner surface as well as its outer surface, has corrugations (12) which define a series of peaks (14) and roots (16) along the tube. The thickness (W1) of the walls (18) of the roots (16) are reduced in thickness from a standard thickness (W0) or the peak wall thickness W. The tube is made by compressing the tube at the root wall region (16) so as to displace material from that region. By applying a compression force sufficient to take the plastics of the tube beyond its elastic point, beneficial properties can be attained.