Patent ID: 6926924

Claim:
A process for manufacturing a metal-composite hose which has a tubular metal layer, which process comprises the sequential steps selected from the groups consisting of: A) 1) masking the inner surface of the tubular metal layer except at end portions of the hose; and 2) forming a thermoplastic resin layer by powder or spray coating on the outer surface of the tubular metal layer and on the unmasked inner surface on the end portions of the hose; B) 1) dip coating end portions of the tubular metal layer with an elastic rubber compound or solution to form an elastic rubber layer on each end portion thereof; 2) masking the whole inner surface of the tubular metal layer; and 3) forming a thermoplastic resin layer on the outer surface of the tubular metal layer by powder or spray coating; C) 1) dip coating end portions of the tubular metal layer with an elastic rubber compound or solution to form an elastic rubber layer on each end portion thereof; 2) masking the uncoated inner surface of the inner layer; and 3) forming a thermoplastic resin layer on the outer surface of the tubular metal layer and on its inner surface at each end portion by powder or spray coating; and D) 1) masking the whole inner surface of the tubular metal layer; 2) forming a thermoplastic resin layer on the outer surface of the tubular metal layer by powder or spray coating; 3) unmasking the inner surface of the tubular metal layer; and 4) dip coating end portions of the metal and resin layers with an elastic rubber compound or solution to form an elastic rubber layer on each end portion thereof.