Liquid container and method for manufacturing a liquid container

Patent metadata

Field	Value
Publication number	US-11724591-B2
Application number	US-201816642555-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Aug 28, 2017
Publication date	Aug 15, 2023
Grant date	Aug 15, 2023

Abstract

A liquid container for a motor vehicle, having a first half-shell and a second half-shell, the half-shells delimiting a storage volume for accommodating liquid, the first half-shell having a first support layer and a first barrier layer, the second half-shell having a second support layer and a second barrier layer, the first barrier being situated on a side of the first support layer facing the storage volume, and the second barrier layer being situated on a side of the second support layer facing the storage volume.

First claim

What is claimed is:

1. A liquid container for a motor vehicle comprising:
a first half-shell; and
a second half-shell;
wherein the half-shells delimit a storage volume for accommodating liquid;
wherein the first half-shell has a first support layer and a first barrier layer;
wherein the second half-shell has a second support layer and a second barrier layer;
wherein the first barrier layer is situated on a side of the first support layer facing the storage volume;
wherein the second barrier layer is situated on a side of the second support layer facing the storage volume;
wherein the half-shells in a connecting area are directly integrally joined together, the first barrier layer in the connecting area being directly integrally joined to the second barrier layer;
wherein the first support layer and the second support layer in the connecting area are spaced apart from one another, with no contact between the first support layer and the second support layer, and the support layers bordering the barrier layers on both sides; and
wherein a plastic that is used for attaching molded elements, connecting parts, or functional units is locally molded onto a side of at least one of the barrier layers facing the storage volume.

2. The liquid container according to claim 1 , wherein:
the first barrier layer in the connecting area being directly integrally bonded to the second barrier layer.

3. The liquid container according to claim 1 , wherein at least one of the half-shells in the connecting area is made, at least partially, of a laser-transparent material, a direct integral bond having been formed by laser transmission welding.

4. The liquid container according to claim 3 , wherein:
the first support layer in the connecting area is made, at least partially, of a laser-transparent material, or
the first support layer and the first barrier layer in the connecting area are made, at least partially, of a laser-transparent material.

5. The liquid container according to claim 1 , wherein:
at least one of the half-shells in the connecting area has a web; and
wherein a direct integral bond is formed along the web.

6. The liquid container according to claim 1 , wherein:
at least one of the barrier layers is a one-ply film that has been directly integrally bonded to the associated support layer; and/or
at least one of the barrier layers is a multi-ply film that has been directly integrally bonded to the associated support layer.

7. A liquid container for a motor vehicle comprising:
a first half-shell; and
a second half-shell;
wherein the half-shells delimit a storage volume for accommodating liquid;
wherein the first half-shell has a first support layer and a first barrier layer;
wherein the second half-shell has a second support layer and a second barrier layer;
wherein the first barrier layer is situated on a side of the first support layer facing the storage volume;
wherein the second barrier layer is situated on a side of the second support layer facing the storage volume;
wherein the half-shells in a connecting area are integrally joined together, the first support layer in the connecting area being integrally joined to the second support layer;
wherein the first barrier layer and the second barrier layer in the connecting area are spaced apart from one another, with no contact between the first barrier layer and the second barrier layer;
wherein solidified melt of a material of the first support layer and/or of a material of the second support layer is situated between the barrier layers;
wherein a permeation path is formed in the connecting area between the spaced-apart barrier layers;
wherein a length of the permeation path, viewed in a cross section, is greater than or equal to twice the width of the permeation path; and
wherein the width of the permeation path corresponds to the distance between the barrier layers in the connecting area.

8. The liquid container according to claim 7 , wherein:
the first support layer in the connecting area being integrally bonded to the second support layer.

9. The liquid container according to claim 7 , wherein the barrier layers in the connecting area are completely enclosed by the support layers and isolated from the surroundings by the support layers.

10. The liquid container according to claim 7 , wherein:
at least one of the half-shells in the connecting area has a web; and
wherein an integral bond is formed along the web.

11. The liquid container according to claim 7 , wherein:
at least one of the barrier layers is a one-ply film that has been integrally bonded to the associated support layer; and/or
at least one of the barrier layers is a multi-ply film that has been integrally bonded to the associated support layer.

12. The liquid container according to claim 7 , wherein a plastic that is used for attaching molded elements, connecting parts, or functional units is locally molded onto a side of at least one of the barrier layers facing the storage volume.

Assignees

• Kautex Textron Gmbh & Co Kg

Inventors

• Bouffier Roman
• Wolf Hartmut
• Kopiec Christian
• Gebert Klaus
• Rosenstraeter Sebastian Stefan
• Siggia Fabian
• Huetzen Markus

Classifications

• B60K15/03177 Primary

  made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material (B60K15/03006 takes precedence) · CPC title

• B29C65/1635

  at least passing through one of the parts to be joined, i.e. laser transmission welding · CPC title

• B29C65/20

  with direct contact, e.g. using "mirror" · CPC title

• B29C66/1312

  Single flange to flange joints, the parts to be joined being rigid (the parts to be joined being flexible B29C66/133) · CPC title

• B29C66/54

  Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles · CPC title