Abstract: The present invention provides a multilayer hose comprising:
a flexible inner layer of polyvinyl chloride having high molecular weight;
a flexible linking layer of polyvinyl chloride having medium molecular weight;
a reinforcing structure based on plastics material fibers; and
a flexible outer layer of polyvinyl chloride having molecular weight greater than that of the linking layer.
The invention also provides a method of making the hose.
Abstract: A flexible hose of multilayer plastics material for transporting fluids, the hose comprising from the inside towards the outside:
an inner layer of a polyolefin that is inert relative to water;
a bonding layer having adhesive properties relative to the polyolefin and to the flexible polyvinyl chloride;
a layer of flexible polyvinyl chloride; and
tubular reinforcement in contact with the polyvinyl chloride.
Abstract: A multilayer hose made of plastics material for transporting highly solvent chemicals such as paint, the hose including, from the inside to the outside, a polyamide/polyolefin alloy layer, a polyurethane-based adhesive layer, a flexible plasticized layer of polyvinyl chloride, and tubular reinforcement in contact with the polyvinyl chloride.
Type:
Grant
Filed:
November 10, 1999
Date of Patent:
April 17, 2001
Assignee:
Tricoflex SA
Inventors:
Fabrice Leray, Frédéric Maitay, Philippe Peyrat