PROCESS FOR MODIFYING AND JOINING ORIENTED PIPES

The invention relates to Joined pipe comprising two biaxially oriented pipes and a joint portion between the two biaxially oriented pipes, wherein the biaxially oriented pipes have an outer diameter of 2 mm to 2000 mm and a thickness of 0.3 mm to 100 mm and are obtained by drawing a tube made of a t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TARAIYA, Ajay Kumar, KLEPPINGER, Ralf
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS 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
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Beschreibung
Zusammenfassung:	The invention relates to Joined pipe comprising two biaxially oriented pipes and a joint portion between the two biaxially oriented pipes, wherein the biaxially oriented pipes have an outer diameter of 2 mm to 2000 mm and a thickness of 0.3 mm to 100 mm and are obtained by drawing a tube made of a thermoplastic polymer composition at an axial draw ratio of 1.1-5.0 and a hoop draw ratio of 1.1-2.0, wherein the joint portion is made of the same thermoplastic polymer composition as the biaxially oriented pipes, wherein the two biaxially oriented pipes and the joint portion have the same inner diameter and the joint portion has a larger thickness than the biaxially oriented pipes.