Siemens Aktiengesellschaft

Bonus Energy A/s

Michael Nørlem

Henrik Stiesdal

Claus Burchardt

Allan Hurup

Bendt Olesen

Peder Bay Enevoldsen

Martin Winther-Jensen

Jens Jørgen Ø Kristensen

Kaj Johansen

A mold and method for vacuum assisted resin transfer molding of a fiber reinforced laminated structure are provided. The mold includes a first mold part and a second mold part. The first mold part defines a negative impression of the laminated structure, being structurally stable and forming a support for fiber reinforcement layers of the laminated structure. The second mold part connectable to the first mold part for closing the mold and defines together with the first mold part an enclosed space which can be evacuated. The mold further includes a flow duct for guiding a liquid polymer which is formed as a recess in the first mold part and/or a recess in the second mold part that is open towards the enclosed space and extends along a section of the periphery of the first mold part and/or the second mold part.

Mould and method for vacuum assisted resin transfer moulding

A method for making a windmill blade is provided, whereby problems with glue joints and with exposure of the workers to environmentally hazardous substances are avoided. This is effected by making the windmill blade in a closed mold with a mold core () inside mold parts () for formation of a mold cavity (), in which fiber material () and core material () are placed. After applying vacuum to the mold cavity (), matrix material () is injected via a filling pipe (), which is placed at a downwardly oriented side edge of the blade during the filling. Hereby is established a flow front () which is used for indicating complete filling when this reaches the trailing edge of the blade and penetrates out through overflow apertures.

Method for manufacturing windmill blades

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Svenstrup, Denmark

Michael Nørlem