Flexible tube, and method for manufacturing same
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United States of America Patent
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May 20, 2003
Grant Date -
Mar 14, 2002
app pub date -
Sep 13, 2001
filing date -
Sep 13, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible tube having a laminated multi-layer structure including an outer layer composed of a main tube body layer formed of thermoplastic synthetic resin in a predetermined thickness and a reinforcing layer provided on the inner side of the main tube body layer, and an inner layer formed of a thin film sheet of air tight and low friction material. The inner layer is formed by rolling an elongated strip of a thin film sheet into a tubular form such that opposite lateral sides of the thin film sheet are overlapped one on the other to provide a thick wall portion extending longitudinally of and at one angular position of the inner layer.
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