Polyamide-based pipes and their use in conveying petrol

• Main Authors: SIOUR, DANIEL, DENIZART, OLIVIER, ECHALIER, BRUNO
• Format: Patent
• Language: English
• Published: 21.03.2001
• Edition: 7
• Subjects: BLASTING; BOTTLES, JARS OR SIMILAR CONTAINERS; DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; LIQUID HANDLING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; OPENING, CLOSING; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

The invention relates to a pipe including an internal layer including a mixture of polyamide and of polyolefin with a polyamide matrix, an external layer including a polyamide and optionally an EVOH layer between the said external and internal layers. These pipes are particularly impervious to alcohol-containing petrols.