Kautex Textron Gmbh & Co. Kg

Timo Kramer

Dirk Eulitz

Harald Lorenz

Gerd Wolter

Matthias Borchert

Christoph Mehren

Deniz Bienhuls

Robert Lower

Klaus Gebert

Markus Hutzen

Joachim Eckhardt

Thomas Froitzheim

An article enclosing at least one built-in fitment component in the form of a hollow body of thermoplastic material. The hollow body is preferably in the form of a fuel tank. The built-in fitment component is pressed against the inside wall of the article while still plastic so that the plastic material of the hollow body penetrates through at least one recess or opening of the built-in fitment component and flows therebehind.

Container of thermoplastic material

The invention concerns a process for the production of a container, in particular a fuel tank of thermoplastic material, by extrusion blow molding, wherein during shaping of the container within a multi-part tool the container is provided with at least one connecting element passing through the wall thereof, wherein with at least a part of the connecting element as a lost shaping male die the wall of the container is displaced from one side into a tool placed on the oppositely side of the container wall and removed. The invention further concerns a fuel tank with at least one connecting element which is connected to the tank wall at least in region-wise manner by intimate joining of the materials involved.

Process for the production of a fuel tank and fuel tank

The invention concerns a process for the production of an article enclosing built-in fitment components in the form of a hollow body of thermoplastic material. The hollow body is preferably in the form of a fuel tank. The process includes the extrusion of one or more preforms in web or tube form of plasticized material between the opened portions of a mold tool forming a cavity, wherein at least one built-in fitment component to be enclosed by the finished article is placed between the portions of the mold tool and the tool is closed around the preforms and the built-in fitment component, wherein the preforms within the cavity enclosed by the tool acquire the external configuration of the article. The built-in fitment component is pressed during or directly after the shaping operation against the inside wall of the article while still plastic so that the plastic material of the hollow body penetrates through at least one recess or opening of the built-in fitment component and flows therebehind.

Method for producing a container of thermoplastic material

The invention concerns a process for the production of hollow bodies of thermoplastic material, in particular a process for the production of fuel tanks of plastic material. In the process according to the invention preforms in web or band form of plasticized plastic material are shaped in a multi-part tool forming a mold cavity by expansion of the preforms and causing them to bear against the internal contour of the mold cavity. The process firstly includes the production of two mutually complementary intermediate products in the form of shell portions. Then respective built-in fitment components are secured to the respective insides of the shell portions, which face towards each other in the installation position, wherein at least some built-in fitment components of mutually complementary shell portions are respectively of mutually complementary configuration, in the sense that they can be joined to provide an assembled component or to provide a functional unit. The shell portions are assembled in such a way that the mutually complementary built-in fitment components engage into each other and/or come into operative connecting relationship with each other.

Procedure for producing hollow bodies of thermoplastic material

Process for the production of a fuel tank and a fuel tank

The invention concerns a mold tool for the production of extrusion blow molded products, comprising at least three mold portions () which define a mold cavity () and of which two are in the form of outer molds () and one is in the form of a central mold (). The outer molds () and the central mold () are displaceable from and towards each other in the sense of an opening and closing movement of the tool. The central mold () is provided with component holders () which can be moved out of and into the tool plane defined by the central mold and are arranged in turn on a carrier () which is also displaceable with respect to the central mold ().

Mold tool for the production of extrusion blow molded products

The invention concerns a process for the production of hollow bodies of thermoplastic material. In the process according to the invention preforms in web or band form of plasticized material are shaped in a multi-part tool forming a mold cavity comprising two outer molds and at least one central mold which perform an opening and closing movement relative to each other. The central mold is provided with at least one component holder which can be moved of and into the tool plane defined by the central mold. In a first step the component holder is fitted with at least one insert portion, then the insert portion is placed by means of the component holder against the inside wall of an outer mold. In a further step introduction and shaping of the preforms within the tool is effected in a two-stage procedure, wherein firstly the preforms are respectively applied against a contour forming a part of the mold cavity by means of increased pressure and/or reduced pressure and shaped and then the intermediate products forming respective parts of the hollow body are joined together to form a finished product.

Process for the production of hollow bodies of thermoplastic material

The invention concerns a process for the production of hollow bodies of thermoplastic material, in particular a process for the production of fuel tanks of plastic material. In the process according to the invention preforms in web or band form of plasticised plastic material are shaped in a multi-part tool forming a mould cavity by expansion of the preforms and causing them to bear against the internal contour of the mould cavity. The process firstly includes the production of two mutually complementary intermediate products in the form of shell portions. Then respective built-in fitment components are secured to the respective insides of the shell portions, which face towards each other in the installation position, wherein at least some built-in fitment components of mutually complementary shell portions are respectively of mutually complementary configuration, in the sense that they can be joined to provide an assembled component or to provide a functional unit. The shell portions are assembled in such a way that the mutually complementary built-in fitment components engage into each other and/or come into operative connecting relationship with each other.

The invention concerns a process for the production of hollow bodies of thermoplastic material by extrusion blow molding. In the process according to the invention continuous extrusion of at least two preforms in web form of plasticized material is effected by means of a plurality of extrusion devices. The preforms are jointly shaped to form a hollow body in the still plastic condition, that is to say in the first heat, within a multi-part tool forming a mold cavity. In that case a wall thickness profile is imparted to at least one preform during the extrusion operation independently of the respective other preform by continuous nozzle gap adjustment during the extrusion operation.

Process for the production of hollow bodies of thermoplastic material by extrusion blow molding

The invention concerns a fuel tank () of thermoplastic material, comprising functional installation fitments for air intake and venting, for fuel take-off or the like, which is distinguished in that at least one functional installation fitment is connected to the inside wall () of the container in material-bonded relationship in such a way that the functional installation fitment defines with the container wall a volume separated from the filling volume of the container in such a way that the inside wall () of the container serves directly as a boundary wall of said volume.

Fuel tank of thermoplastic material with functional installation fitments for air intake and venting, for fuel take-off or the like

The invention concerns a fuel tank () of thermoplastic material comprising at least one peripherally extending seam () in the form of a welded or squeeze seam, at least one filling opening, air intake and venting means and means for delivering and removing fuel in relation to an internal combustion engine of a motor vehicle, wherein the fuel tank has at least one lead-through means () for lines which are to be passed out of the tank. The fuel tank () according to the invention is distinguished in that the lead-through means () passes through the seam () of the tank and extends at an angle relative to the course of the seam ().

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Hirz-Maulsbach, Germany

Timo Kramer