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US 8,282,874 B2Granted
Method for manufacturing a composite and a wind turbine blade
AssigneeSiemens Aktiengesellschaft
InventorHenrik Stiesdal
Life of this patent
Estimating the term…
Abstract
A method for manufacturing a composite is provided. A first fibre mat is laid onto an inner surface of a mould. Suction is applied between the inner surface of the mould and the first fibre mat. A second fibre mat is laid over the first fibre mat, wherein the second fibre mat is covered with a vacuum bag. Vacuum is introduced between the vacuum bag and the mould and resin is injected under vacuum between the vacuum bag and the mould. After the resin is set, the mould will be removed.
Claims20
A method of manufacturing a composite, comprising:
- laying a first fibre mat onto an inner surface of a mould;
- applying suction between the inner surface of the mould and the first fibre mat such that the first fiber mat flattens against the inner surface of the mould;
- laying a second fibre mat over the first fibre mat;
- covering the second fibre mat with a vacuum bag after said applying suction between the inner surface of the mould and the first fiber mat;
- introducing vacuum between the vacuum bag and the mould;
- injecting resin under vacuum between the vacuum bag and the mould;
- letting the resin set;
- and
- removing the mould, wherein a medium which is suitable to distribute vacuum is placed between the inner surface of the mould and the first fibre mat, and is used for applying the suction between the inner surface of the mould and the first fibre mat, and is connected to a vacuum pump for applying the suction.
6 more elements
A method of manufacturing a wind turbine blade, comprising:
- laying one or more first fibre mats onto a concave inner surface of each of a lower part and of an upper part of a mould;
- applying suction between the inner surfaces of the mould parts and the one or more first fibre mats;
- laying a second fibre mat over the one or more first fibre mats in the lower part and the upper part of the mould, the second fibre mats comprising a layer of material having a lower air permeability than respective outermost ones of the one or more first fibre mats;
- covering the second fibre mats with a vacuum bag such that the vacuum bags are placed on the second fibre mats;
- covering the second fibre mat laying in the lower part of the mould with a mould core;
- placing the upper part of the mould on top of the lower part of the mould such that the mould is closed;
- introducing vacuum between the vacuum bags and the mould;
- injecting resin under vacuum between the vacuum bags and the mould;
- letting the resin set;
- and
- removing the mould and the mould core.
8 more elements
Dependencies are inferred from the claim text.