Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method of plastic fuel tank containing EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer

A manufacturing method and fuel tank technology, applied to chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of complex molding process and large degree of freedom in modeling design of plastic fuel tanks, and achieve easy processing The control and preparation methods are simple and easy, and the effect of fewer layers

Inactive Publication Date: 2013-10-30
HEFEI GENIUS NEW MATERIALS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (3) Large degree of freedom in shape design
The molding process of plastic fuel tanks with multi-layer composite structure is relatively complicated, requiring a special hollow blow molding machine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of plastic fuel tank containing EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for making a plastic fuel tank containing an EVOH barrier layer. The polyethylene resin sheet 1 and the ethylene-vinyl alcohol copolymer film 2 are compounded by a compound machine to form a top-down structure in sequence of polyethylene resin layer, ethylene-ethylene The three-layer sheet of alcohol copolymer layer and polyethylene resin layer, the working pressure of the compound machine is 15MPa, the three-layer sheet is sent into the pressing mold of the plastic fuel tank, the molding temperature is controlled at 150 ° C, and the molding is produced. Plastic fuel tank.

[0029] In this implementation, the polyethylene resin sheet used is HDPE resin (grade: Iran Petrochemical HDPE 52518), which is plasticized and melted at a temperature of 170-200°C, and extruded to obtain HDPE sheet. The grade of EVOH film pre-coating adhesive is Mitsui ADMERNF528H, two pieces of HDPE sheets and EVOH film are compounded by a compound machine to form a three-layer sheet with...

Embodiment 2

[0031] A method for making a plastic fuel tank containing an EVOH barrier layer, in which a polyethylene resin sheet and an ethylene-vinyl alcohol copolymer film are compounded by a compound machine to form a top-down structure, followed by polyethylene resin layer, ethylene-vinyl alcohol copolymer Material layer, polyethylene resin layer three-layer board, the working pressure of the composite machine is 16MPa, the three-layer board is sent to the pressing mold of the plastic fuel tank, the molding temperature is controlled at 160 ° C, and the plastic fuel tank is produced by molding. box.

[0032] In this implementation, the polyethylene resin sheet used is HDPE resin (grade: Fushun ethylene HDPE 2911), which is plasticized and melted at a temperature of 170-200°C, and then extruded to obtain a HDPE sheet. The grade of the EVOH film pre-coated adhesive is Mitsui ADMER AT1809, two pieces of HDPE sheet and EVOH film are compounded by a compound machine to form a three-layer sh...

Embodiment 3

[0034] A method for making a plastic fuel tank containing an EVOH barrier layer. The polyethylene resin sheet 1 and the ethylene-vinyl alcohol copolymer film 2 are compounded by a compound machine to form a top-down structure in sequence of polyethylene resin layer, ethylene-ethylene Alcohol copolymer layer, polyethylene resin layer three-layer plate, the working pressure of the composite machine is 18MPa, such as figure 1 shown. The three-layer board is fed into the pressing mold of the plastic fuel tank, the molding temperature is controlled to be 150° C., and the plastic fuel tank is produced by molding.

[0035] Wherein, the polyethylene used is a high-density polyethylene resin, and the high-density polyethylene is extruded to obtain a polyethylene resin sheet, and the ethylene-vinyl alcohol copolymer film and the polyethylene resin sheet are bonded by an adhesive maleic anhydride. The plastic fuel tank press mold is composed of an upper mold for making the upper part of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a manufacturing method of a plastic fuel tank which contains an EVOH (Ethylene-Vinyl Alcohol Copolymer) barrier layer. The manufacturing method comprises the following steps of: compounding a polyethylene resin plate and an ethylene-vinyl alcohol copolymer film into a structure which sequentially includes three-layer plates, namely a polyethylene resin layer, an ethylene-vinyl alcohol copolymer layer and a polyethylene resin layer, from top to bottom through a compound machine; delivering the three-layer plates into a pressing mould of the plastic fuel tank; controlling mould pressing temperature to 150-160 DEG C; carrying out mould pressing forming to manufacture the plastic fuel tank. Compared with the prior art, the plastic fuel tank has a good barrier property because a barrier material is added to the constructional materials of the fuel tank in a film way and is simple in structure because a compound material is small in layer number; the preparation method is simple and feasible and has lower requirement on equipment; and the processing process is easy to control.

Description

technical field [0001] The invention relates to a manufacturing method of a plastic fuel tank, in particular to a manufacturing method of a plastic fuel tank containing an EVOH barrier layer. Background technique [0002] Most of the early automobile fuel tanks were metal fuel tanks. However, due to the many defects of metal fuel tanks in terms of environmental protection and safety performance, this led to the birth of plastic fuel tanks. Plastic fuel tanks have many advantages: [0003] (1) Light weight. The relative density of plastic is only 1 / 8 to 1 / 7 of that of metal, so compared with the same volume of metal fuel tank, its weight can be reduced by 30% to 50%, thereby reducing the overall weight of the car and reducing fuel consumption. [0004] (2) Corrosion resistance. Due to the strong chemical corrosion resistance of plastic, the plastic fuel tank will not produce some impurities due to corrosion, which will not cause impurities to enter the engine through the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C51/00B32B27/08B60K15/03
Inventor 杨桂生肖玲玲孙利明姚晨光
Owner HEFEI GENIUS NEW MATERIALS
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com