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Extrusion-blow-molded fuel tank of thermoplastic material and method for the production thereof

A thermoplastic material, extrusion blow molding technology, applied in the direction of chemical instruments and methods, combined with internal combustion engine fuel supply arrangement, lamination, etc., can solve the problems of large volume loss, complex exhaust system, etc.

Inactive Publication Date: 2014-12-31
KAUTEX TEXTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this tank, it is also quite complicated to provide an exhaust system
Finally, the relatively simple geometry of the supporting shell requires considerable volume loss

Method used

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  • Extrusion-blow-molded fuel tank of thermoplastic material and method for the production thereof
  • Extrusion-blow-molded fuel tank of thermoplastic material and method for the production thereof
  • Extrusion-blow-molded fuel tank of thermoplastic material and method for the production thereof

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Experimental program
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Embodiment Construction

[0036] Figure 1-3 Firstly, the method according to the invention for the production of the fuel tank 1 according to the invention is shown. Therefore, the method is discussed first in the following text.

[0037] The method described below consists in extruding two preforms 2 of thermoplastic material in the form of webs or strips. The plastic has been plasticized beforehand in the extruder and is fed to an extrusion head, which is indicated only in a labeled manner for the sake of brevity. The extrusion head comprises two slot dies from which the extruded profile in molten form takes the form of a sheet-like preform 2 in web-like form. As for the preferred embodiment described, the preform 2 is pressed directly between the open halves 3 a , 3 b of the blow molding tool 3 . The halves 3a, 3b of the blow molding tool 3 each form a component cavity and define a mold cavity for molding the preform 2 into a shell-shaped semi-finished product, which is molded in a further metho...

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Abstract

The invention relates to an extrusion-blow-molded fuel tank (1) of thermoplastic material comprising a tank wall of a composite of various layers obtained in various production operations, at least one first layer comprising at least one shell-shaped supporting shell (8) and a second layer of a thermoplastic material forming an adhesive bond with the supporting shell (8), and the supporting shell (8) having a greater strength than the second layer. The supporting shell (8) forms an inner layer of the tank and the second layer forms an outer skin of the tank, two supporting shells within the tank forming a supporting cage or a supporting housing.

Description

technical field [0001] The invention relates to an extrusion blow molded fuel tank of thermoplastic material comprising a tank wall of a composite of different layers obtained in different manufacturing operations, at least one first layer comprising at least one supporting shell in the form of a shell ), and a second layer of thermoplastic material forms a bond with the support shell; and the support shell is stronger than the second layer. [0002] The invention also relates to a method for the production of a fuel tank, in particular a fuel tank of the above-mentioned type. Background technique [0003] A fuel tank of the type mentioned at the outset and a method for its production are known, for example, from DE 10 2010 027 096 A1. Such plastic fuel tanks are usually multilayer systems based on HDPE, usually comprising a multilayer wall structure with barrier layers for hydrocarbons. Plastic fuel tanks are obtained, for example, by coextruding preforms of multiple laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/04B29C49/20B29C49/22B29C48/07
CPCB29C49/04B29C49/20B29C49/22B29C2049/2013B29C2049/2065B60K15/03177B60K2015/03032B60K2015/03046B60K2015/03453B29L2031/7172B29C51/12B29C51/267B29C48/07B29C48/0017B29D22/00B32B37/02B32B37/24B32B2305/34F17C1/16
Inventor 马库斯·哈特泽恩乌尔里克·卡尔施克里斯托夫·梅伦
Owner KAUTEX TEXTRON
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