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Resin composite hose of curved shape and method for producing the same

A technology of resin synthesis and hose, which is applied in the direction of hose, pipe/pipe joint/pipe fitting, application, etc., and can solve the problems that the resin layer 204 cannot be deformed, loose, and too long

Active Publication Date: 2007-10-03
SUMITOMO RIKO CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] However, in the resin synthetic hose having the resin layer 204, the resin layer 204 cannot be deformed to smoothly follow the curved shape of the mandrel 218, especially, on the inner side of the curved portion of the resin layer 204, due to axial compression Resulting in dimensional shrinkage, thus producing overlength or slack, and producing axial relaxation, resulting in a wavy deformation as shown in Figure 10B

Method used

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  • Resin composite hose of curved shape and method for producing the same
  • Resin composite hose of curved shape and method for producing the same
  • Resin composite hose of curved shape and method for producing the same

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Embodiment Construction

[0071] In FIGS. 1 and 2 , reference numeral 10 denotes a resin synthetic hose (hereinafter simply referred to as a hose) as a fluid delivery hose suitable for a hose such as a fuel hose. The hose 10 has a multi-layer construction comprising: a resin layer 12 which acts as a barrier layer having properties against penetration of fluid to be conveyed; an outer rubber layer 14 located on the outer side of the resin layer 12; A rubber layer 16 is located on the inner side of the resin layer 12 as an inner surface layer.

[0072] Here, the resin layer 12 as an intermediate layer is formed to extend from one axial end portion of the hose 10 to the other axial end portion, or to extend from one axial edge portion of the hose 10 to the other axial edge portion. .

[0073] In this embodiment, the inner rubber layer 16 is made of acrylonitrile-butadiene rubber; the resin layer 12 is made of fluorothermoplastic composed of at least three monomers: tetrafluoroethylene, hexafluoropropylen...

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Abstract

A resin composite hose of curved shape includes a resin layer having permeation resistance to a transported fluid and serving as a barrier layer, an inner rubber layer as an inner surface layer on an inner side of the resin layer and an outer rubber layer on an outer side of the resin layer. The resin composite hose has one axial end that is larger in diameter than the other axial end thereof. The resin composite hose has at least one curved portion. The curved portion is formed in a shape of progressively and continuously increasing diameter from a curve beginning end with a small diameter near the other axial end of the resin composite hose to a curve terminal end with a large diameter near the one axial end thereof.

Description

technical field [0001] The present invention relates to a curved shape resin synthetic hose including a resin layer provided in the middle of a plurality of layers and a method for producing the curved shape resin synthetic hose, the resin layer having a resistance to Delivered fuel permeable properties and acts as a barrier. Background technique [0002] In fluid conveying hose applications such as fuel hoses in motor vehicles, typical hoses made of a blend of acrylonitrile-butadiene rubber and polyvinyl chloride (NBR / PVC blend, NBR+PVC) etc. are traditionally used. rubber hose. This rubber hose has high shock absorption, easy assembly, and excellent resistance to fuel (gasoline) penetration. [0003] However, recently, regulations restricting permeation of motor vehicle fuel have become stricter from the standpoint of protecting the global environment, and requirements for preventing permeation of fuel are expected to increase in the future. [0004] As a countermeasure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04B32B1/08B29D23/00B29C47/06B29C47/20B29C53/08B29C35/02B29C48/32
Inventor 坂崎一茂恒友功平
Owner SUMITOMO RIKO CO LTD
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