Method of producing a shaped article having excellent barrier properties
OwnerHong-Ta James Chan, Tomoyuki Watanabe +2inventors
InventorsHong-Ta James Chan, Tomoyuki Watanabe, William Scott Lambert, Nahoto Hayashi
Life of this patent
Estimating the term…
Abstract
A powder of a barrier material (B) is, after having been melted, applied to a substrate of a polyolefin (A) according to flame spray coating process to give a shaped article, in which the barrier material (B) firmly adheres to the polyolefin (A) even when the surface of the substrate is not subjected to primer treatment. The shaped article is favorable to components to fuel containers, fuel tanks for automobiles, fuel pipes, etc.
Claims53
A method of producing a shaped article, which comprises applying a powder of a barrier material (B), after melting it, to a substrate of a polyolefin (A) according to a flame spray coating process.
A method of producing a shaped article, which comprises applying a powder of a thermoplastic resin (C) having an elastic modulus at 20° C. of at most 500 kg/cm2, after melting it, to a substrate of a polyolefin (A) according to a flame spray coating process, followed by applying a powder of a barrier material (B), after melting it, to the resulting layer of the thermoplastic resin (C) according to a flame spray coating process.
A shaped article produced by applying a powder of a barrier material (B), after melting it, to at least a part of the surface of a substrate of a polyolefin (A) according to a flame spray coating process.
A multi-layered fuel container that comprises an interlayer of a barrier resin (D) and inner and outer layers of a polyolefin (A), of which the portion having poor barrier properties is coated with a melted powder of a barrier material (B) according to a flame spray coating process.
Dependencies are inferred from the claim text.