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Three-layer tetrafluoroethylene resin film-wound fuel hose and manufacturing method thereof

A technology of tetrafluoroethylene resin and fuel hose, applied in the direction of hoses, pipes, tubular objects, etc., can solve problems such as difficulty in extruding the resin layer

Inactive Publication Date: 2009-10-14
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pengling Company designed a reasonable process and applied it to the current fuel system pipeline to solve the problem of difficult extrusion of the resin layer of large-diameter fuel pipe products

Method used

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  • Three-layer tetrafluoroethylene resin film-wound fuel hose and manufacturing method thereof
  • Three-layer tetrafluoroethylene resin film-wound fuel hose and manufacturing method thereof
  • Three-layer tetrafluoroethylene resin film-wound fuel hose and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] To produce a three-layer fuel hose with an inner diameter of 7.3±0.3mm×10.4±0.5mm×1000±3mm, the steps are as follows:

[0024] 1. Extrusion process

[0025] ①Single-screw straight extruder with a core to extrude the inner layer of fluororubber in the hose, the diameter of the mandrel is 7.3±0.1mm, the extrusion temperature: 95°C, 85°C, 85°C, 75°C, and the extrusion wall thickness is 0.5mm , extrusion speed 16m / min.

[0026] ②Select the F200 film with a model size of 0.05mm×25mm, and wrap it on the outside of the inner rubber through a cloth wrapping machine, with a lap width of 2mm; the winding line speed is 16m / min, and the ratio of rotation speed to line speed is 40:1.

[0027] ③ After traction, the outer layer of rubber is coated directly through a single-screw T-type extruder. The outer layer of rubber can be selected from chlorohydrin rubber, chlorosulfonated polyethylene rubber, chlorinated polyethylene rubber, acrylate rubber, butadiene rubber according to the d...

Embodiment 2

[0037] To produce a three-layer fuel hose with an inner diameter of 14.5±0.3mm×18.8±0.5mm×1000±3mm, the steps are as follows:

[0038] 1. Extrusion process

[0039] ①Single-screw straight extruder with a core to extrude the inner layer of fluorine rubber in the hose, the diameter of the mandrel is 14.2±0.1mm, the extrusion temperature: 90°C, 80°C, 80°C, 70°C; the extrusion wall thickness is 0.7mm , extrusion speed 12m / min.

[0040] ② Select the F200 film with a model size of 0.05mm×35mm, and wrap it on the outside of the inner rubber through a cloth wrapping machine, with a lap width of 2mm; the winding line speed is 16m / min, and the ratio of rotation speed to line speed is 35:1.

[0041] ③ After traction, the outer layer of rubber is coated directly through a single-screw T-type extruder. The outer layer of rubber can be selected from chlorohydrin rubber, chlorosulfonated polyethylene rubber, chlorinated polyethylene rubber, acrylate rubber, butadiene rubber according to the...

Embodiment 3

[0051] To produce a three-layer fuel hose with an inner diameter of 25±0.3mm×29.5±0.5mm×1000±3mm, the steps are as follows:

[0052] 1. Extrusion process

[0053] ①Single-screw straight extruder with a core to extrude the inner layer of fluororubber in the hose, the diameter of the mandrel is 25±0.1mm, the extrusion temperature: 85°C, 75°C, 75°C, 65°C; the extrusion wall thickness is 0.8 mm, extrusion speed 10m / min.

[0054] ②Select the F200 film with a model size of 0.05mm×40mm, and wrap it on the outside of the inner rubber through a cloth wrapping machine, with a lap width of 2mm; the winding line speed is 10m / min, and the ratio of rotation speed to line speed is 32:1.

[0055] ③ After traction, the outer layer of rubber is coated directly through a single-screw T-type extruder. The outer layer of rubber can be selected from chlorohydrin rubber, chlorosulfonated polyethylene rubber, chlorinated polyethylene rubber, acrylate rubber, butadiene rubber according to the design ...

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Abstract

The invention relates to a three-layer tetrafluoroethylene resin film-wound fuel hose and a manufacturing method thereof. The invention proposes the method of extruding an inner rubber layer of the hose, winding an F200 fluororesin thin film and then coating an outer layer of the hose, so as to obtain a structure with a fluororubber layer 2, an F200 layer 3 and an outer rubber layer 4, while the thickness of each layer is as follows: the fluororubber layer is 0.5-1.0mm, the F200 layer is 0.05mm or 0.1mm, and the outer rubber layer is 1.0-2.5mm, and the range of the inner diameter of the hose is 7.3mm-50.0mm. The structural pipeline prepared by selecting the materials and the basic process not only plays the role of blocking the penetration of fuel and achieves the penetration requirements of Europe IV, but also solves the problems that the prior shaping of large-diameter Europe IV fuel pipeline is difficult and the flexibility of the hose is poor.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to a three-layer tetrafluoroethylene resin film wound fuel rubber hose and a manufacturing method thereof. The structure and the manufacturing method are especially suitable for the technical field of large-caliber low-permeability fuel rubber hoses. Background technique [0002] The present invention is a new type of product aimed at emission standards above Euro IV. As the implementation date of Euro IV requirements in China is approaching day by day, more and more automobile factories require parts and components to meet Euro IV emission standards. Four corresponding fuel hose structures 1 such as figure 1 As shown, the inner layer is extruded fluororesin (THV) 1, and the outer layer is covered with an outer rubber layer 4. Due to the good fluidity and poor stiffness of the extruded fluororesin in the molten state, the large-diameter product nylon flows and deforms after ex...

Claims

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Application Information

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IPC IPC(8): F16L11/04B29D23/00B29C47/00B29C70/68
Inventor 张洪起孙国君
Owner TIANJIN PENGYI GRP CO LTD
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