Multi-layer plastic tube

US6279614A · kind A · utility

Assignee

• Hewing GmbH · DE

Inventors

• Franz-Josef Riesselmann · Löhne, DE
• Harald Eichner · Petershohn, DE
• Josef Bruenen · Neuenkirchen, DE
• Paul Wolters · Ochtrup, DE
• Nils Wehmeier · Osnabrück, DE

Key dates

• Filing date: Sep 29, 1999
• Grant date: Aug 28, 2001
• Expiry date: Sep 29, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S138/01
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A multi-layer plastic tube comprises a base tube and a barrier layer surrounding the base tube, the barrier layer being impermeable to oxygen, and a protective layer applied on the barrier layer for protecting the barrier layer from damage, wherein the material of the barrier layer and protective layers may include a lubricant.