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US 5,476,121 AGranted
Low permeable rubber hose
AssigneeBridgestone Corporation
InventorsMasato Yoshikawa, Hideyuki Niwa, Yukio Fukuura, Kazuo Naito
Life of this patent
Estimating the term…
Abstract
A rubber hose comprising an inner tube of synthetic resin, a silver or silver alloy thin film sputtered or ion plated on the inner tube, and a rubber layer heat cured to the thin film through adhesive exhibits low gas and solvent permeability and high flexibility while maintaining such properties even on angular bending.
Claims15
A low permeable rubber hose comprising:
- an inner tube of a synthetic resin having an outer peripheral surface and a thickness of 5 to 300 .mu.m,
- a seamless thin film of silver or a silver alloy comprising greater than 80% by weight of silver on the outer peripheral surface of said inner tube with a thickness of 50 .ANG. to 1 .mu.m, and
- a rubber layer heat-cured to said thin film through an adhesive layer.
A low permeable rubber hose comprising:
- an inner tube of a synthetic resin having an outer peripheral surface and a thickness of 5 to 300 .mu.m,
- a seamless thin film of silver or a silver alloy comprising greater than 80% by weight of silver on the outer peripheral surface of said inner tube with a thickness of 50 .ANG. to 1 .mu.m, and
- a rubber layer heat-cured to said thin film through an adhesive layer,
- said low permeable rubber hose having a gas permeability of about 1.0 g/m when dichlorodifluoromethane is filled in the hose at 100.degree. C. for 72 hours and the hose is bent at a radius of 50 mm.
1 more element
A low permeable rubber hose comprising:
- an inner tube of a synthetic resin having an outer peripheral surface and a thickness of 5 to 300 .mu.m;
- a plated seamless thin film of silver or a silver alloy comprising greater than 80% by weight of silver on the outer peripheral surface of said inner tube with a thickness of 50 .ANG. to 1 .mu.m;
- and
- a rubber layer heat-cured to said thin film through an adhesive layer.
1 more element
A low permeable rubber hose made by a method comprising:
- (1) forming a synthetic resin tube having an outer peripheral surface and a thickness of 5 to 300 .mu.m;
- (2) plating said resin tube with silver or a silver alloy, comprising greater than 80% by weight of silver to form a seamless silver or silver alloy thin film with a thickness of 50 .ANG. to 1 .mu.m on the outer peripheral surface of said resin tube;
- (3) applying an adhesive-coating to said silver or silver alloy thin film and drying said adhesive-coating;
- (4) extruding a rubber-layer around said adhesive-coating;
- and
- (5) heat-curing said rubber-layer.
3 more elements
Dependencies are inferred from the claim text.