Method for producing a fibre composite component by means of a vacuum build-up, and use therefor

Patent metadata

Field	Value
Publication number	US-10005243-B2
Application number	US-201314403366-A
Country	US
Kind code	B2
Filing date	May 27, 2013
Priority date	May 25, 2012
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A fiber composite component is made by infiltrating and curing at least one textile component preform that is placed on a molding tool surface and covered with an air-tight covering and on which pressure is exerted, in at least one stage of production, by evacuating a vacuum chamber between the molding tool surface and the air-tight covering. The air-tight covering is formed from a resin film.

First claim

The invention claimed is:

1. A method for producing a fiber composite component, the method comprising:
placing at least one textile component preform on a molding tool surface;
covering the at least one textile component preform with an air-tight covering formed from a resin film, which is applied as a covering to the at least one textile component preform in a liquid to semi-liquid state;
adding a catalyst essentially only on a resin film surface facing away from the at least one textile component preform so that outermost surface areas of the resin film are cured or cured more rapidly to create or stabilize a gas-tightness of the resin film;
exerting pressure on the covered at least one textile component preform, in at least one stage of production, by evacuating a vacuum chamber between the molding tool surface and the air-tight covering; and
infiltrating and curing the at least one textile component preform, wherein an identical resin material is used for the infiltration and the resin film.

2. The method of claim 1 , wherein the resin film is used in a carrier-stabilized form.

3. The method of claim 2 , wherein the resin film is pre-produced carrier-stabilized and then applied to the preform.

4. The method of claim 1 , wherein a consistency of the applied resin film is deliberately influenced during production by adjusting temperature or humidity.

5. The method of claim 1 , wherein the preform is infiltrated using some of the resin film that is liquefied after the vacuum chamber is evacuated.

6. The method of claim 1 , wherein the preform is infiltrated using separately supplied resin.

7. The method of claim 1 , wherein to increase the pressure exerted onto the preform, a pressure chamber is used in which the molding tool surface, preform, and air-tight covering are housed.

8. The method of claim 1 , wherein the resin film is removed from the cured preform at the end of the production method.

9. The method of claim 1 , wherein the resin film remains on the cured preform at the end of the production method.

10. The method of claim 1 , wherein the cured preform is a hollow component.

Assignees

• Premium Aerotec Gmbh

Inventors

• Bauer Ernst-Joachim

Classifications

• B29L2022/00

  Hollow articles (tubular articles B29L2023/00; pneumatic tyres B29L2030/00) · CPC title

• B29C70/467

  and impregnating the reinforcements during mould closing (B29C70/465 takes precedence) · CPC title

• B29C70/465

  and impregnating by melting a solid material, e.g. sheets, powders of fibres · CPC title

• B29C70/446

  Moulding structures having an axis of symmetry or at least one channel, e.g. tubular structures, frames · CPC title

• B29C70/443

  and impregnating by vacuum or injection · CPC title