Semi-finished honeycomb part and sandwich part

Patent metadata

Field	Value
Publication number	US-9956735-B2
Application number	US-201514978876-A
Country	US
Kind code	B2
Filing date	Dec 22, 2015
Priority date	Dec 22, 2014
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

A method for producing a semi-finished honeycomb-core product for producing a sandwich component, a method for producing a sandwich component, a semi-finished honeycomb-core product, a sandwich component, and the use thereof as a component of a motor vehicle.

First claim

What is claimed is:

1. A method for producing a semi-finished honeycomb-core product for a motor vehicle, comprising:
providing a honeycomb core having a plurality of webs;
moistening the honeycomb core at least in a deformation region of the webs by dipping the honeycomb core into an acid-based liquid contained within a container; and
crumpling the honeycomb core at least in the deformation region by pressing the honeycomb core against a bottom surface of the container while the honeycomb core is dipped into the liquid contained within the container.

2. The method of claim 1 , wherein the deformation region is located at an end region of the webs.

3. The method of claim 1 , wherein the pressing the honeycomb core comprises bearing one end of the honeycomb core against a planar component.

4. The method of claim 1 , further comprising, drying the honeycomb core after crumpling the honeycomb core.

5. The method of claim 1 , wherein the semi-finished honeycomb-core product comprises a sandwich component.

6. The method of claim 1 , wherein:
the honeycomb core has longitudinal sides opposite each other; and
from among the longitudinal sides, only one of the longitudinal sides is moistened during the moistening and deformed during the crumpling.

7. A method for producing a semi-finished honeycomb-core product for a motor vehicle, comprising:
providing a honeycomb core having a plurality of webs;
moistening the honeycomb core at least in a deformation region of the webs by dipping the honeycomb core into an alcohol-based liquid contained within a container; and
crumpling the honeycomb core at least in the deformation region by pressing the honeycomb core against a bottom surface of the container while the honeycomb core is dipped into the liquid.

8. A method for producing a sandwich component for a motor vehicle, comprising:
providing a honeycomb core having a plurality of webs;
moistening the honeycomb core at least in a deformation region of the webs by dipping the honeycomb core into at least one of acid-based liquid or an alcohol-based liquid contained within a container;
crumpling the honeycomb core at least in the deformation region by pressing the honeycomb core against a bottom surface of the container while the honeycomb core is dipped into the liquid contained within the container; and
applying outer layers to the ends of the honeycomb core, wherein the outer layers are composed of fibre composite material, or semi-finished fibre material.

9. The method of claim 8 , wherein the liquid comprises an isocyanate when a PUR matrix material is used as the honeycomb core.

10. The method of claim 8 , further comprising, after applying the outer layers, compressing the sandwich component in a moulding tool in order to obtain a desired shape.

11. The method of claim 8 , wherein:
the honeycomb core has longitudinal sides opposite each other; and
from among the longitudinal sides, only one of the longitudinal sides is moistened during the moistening and deformed during the crumpling.

Assignees

• Magna Steyr Fahrzeugtechnik Ag & Co Kg

Inventors

• Wolfsberger Guenter

Classifications

• B29K2103/00

  Use of resin-bonded materials as moulding material · CPC title

• B32B2038/0056

  Moistening · CPC title

• B29D99/0089 Primary

  Producing honeycomb structures (consisting of porous ceramic ware C04B38/0006) · CPC title

• B32B2305/076

  Prepregs · CPC title

• B29C67/0048

  Local deformation of formed objects · CPC title