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Fuel hose and method for producing same

A hose and fuel technology, applied in the direction of hoses, applications, pipes, etc., can solve the problems of expensive hoses and increase the thickness of the fluororesin layer, and achieve excellent heat resistance, light weight, and low fuel permeability. Effect

Active Publication Date: 2012-05-30
SUMITOMO RIKO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As such fuel hoses, hoses made of fluororesin have been the mainstream until now. However, when more stringent low fuel permeability performance is required, the thickness of the fluororesin layer has to be increased, and the hose becomes expensive. difficulty

Method used

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  • Fuel hose and method for producing same
  • Fuel hose and method for producing same
  • Fuel hose and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～21、 comparative example 1～2

[0088] Prepare the materials for the innermost layer (only Examples 16 to 21), the materials for the inner layer, and the materials for the outer layer shown in the following Tables 1 to 5, and use an extrusion molding machine (a multi-layer extrusion molding machine manufactured by Plastic Engineering Research Institute Co., Ltd.) extruder) melted and kneaded these, and co-extruded them to produce a smooth hose with an inner diameter of 6 mm. In addition, when the smooth hose produced above has a 2-layer structure, the thickness of the inner layer is 0.3mm / the thickness of the outer layer is 0.7mm; mm / thickness of outer layer 0.7mm.

[0089] [Table 1]

[0090]

[0091] [Table 2]

[0092]

[0093] [table 3]

[0094]

[0095] [Table 4]

[0096]

[0097] [table 5]

[0098]

[0099] Using the thus-obtained hoses of Examples and Comparative Examples, each property was evaluated according to the following criteria. These results are collectively shown in Tables...

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Abstract

Disclosed is a fuel hose provided with a tubular inner layer (1) composed of a resin composition (A) which is mainly composed of an aromatic polyamide resin and which contains an organic acid salt having a carbon number of 10-28, and an outer layer (2) which is provided on the outer peripheral surface of the inner layer and which is composed of a resin composition (B) mainly composed of an aromatic polyamide resin, wherein both layers are bonded to each other. Thus, the fuel hose has a low fuel permeability and an excellent bonding property between the layers.

Description

technical field [0001] The present invention relates to a fuel hose used for transportation of fuel (gasoline, blended gasoline, diesel fuel, etc.) for automobiles and the like. Background technique [0002] In recent years, the evaporative regulation of fuel gas surrounding automobiles has become stricter, and various low-permeability fuel hoses have been studied in response to this. As such fuel hoses, hoses made of fluororesin have been the mainstream until now. However, when more stringent low fuel permeability performance is required, the thickness of the fluororesin layer has to be increased, and the hose becomes expensive. difficulty. Therefore, as resins that are cheaper than fluororesins and have excellent low fuel permeability, aromatic polyamides such as polyphenylene sulfide resin (PPS) and polyamide 9T (PA9T / poly1,9-nonylidene terephthalamide) Aromatic polyester resins such as amide resins and polybutylene terephthalate (PBT) have attracted attention. In rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04B32B1/08B32B27/34
CPCB32B27/34B32B27/18B32B27/304B32B27/322F16L11/04B32B2250/24B32B7/10B32B27/08B32B1/08B32B2605/00B32B2597/00B32B7/12B32B2262/101B32B2262/103B32B2262/106B32B2307/202B32B2307/306B32B2307/546B32B2307/56B32B2307/732
Inventor 水谷幸治片山和孝田村太吾笠原一人泷本依史
Owner SUMITOMO RIKO CO LTD
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