Abstract: A method in which a fibre material is laid on a mould surface resembling a negative image of a fibre reinforced structure to be produced. Layering the fibre material on the mould surface includes laying rovings of the fibre material on the mould surface or on a fibre material already laid on the mould surface and applying an low pressure to a space between the rovings and the mould surface.

Abstract: A mould part is provided. The mould part includes a surface with a mould opening, a first arm with a connecting means for connecting a first pulley, the first arm being pivotably attached to a first attachment point of the mould part, a second arm with a connecting means for connecting a second pulley, the second arm being pivotably attached to a second attachment point of the mould part, wherein the second arm is arranged to be locked in at least two different turning positions.

Abstract: A method to manufacture a blade, especially to manufacture a blade of a wind turbine is provided. An arrangement including a mould is provided and used to carry layers of blade-components. A dry-powder is applied at least to an inner surface of the mould, before the layers are arranged onto the inner surface of the mould. Thus the mould includes a dry powder-coat as a bottom layer.

Abstract: A method for forming a profile for a hollow component is provided. A first composite fibre layer is laid out on a first surface corresponding to a first profile section of the component. A second composite fibre layer is laid out in a second surface corresponding to a second profile section of the component. A collapsed bag is laid out in onto the first composite fibre layer. The bag and the first composite fibre layer are fixed to the first surface. First and second mould elements are coupled such that the first surface and the second surface correspond to the first and second profiles. The bag is inflated such that the first composite fibre layer is pressed to the first surface and the second composite fibre layer is pressed to the second surface so that the first and second layers are coupled to form the profile.

Abstract: A method for manufacturing a work piece is provided. The method includes preparing fibreglass in a mould, preparing a closed mould cavity around the fibreglass, flushing the closed mould cavity with an oxygen-free gas, injecting resin in the closed mould cavity, and curing the casted work piece.

Abstract: A method of moulding a wind turbine blade in a mould is provided. The method includes applying a film to an inside surface of a mould, assembling component layers for the wind turbine blade on the film, performing curing to harden the component layers, and subsequently removing the cured wind turbine blade from the mould. Also provided is a film suitable for use in a wind turbine blade moulding process and a mould suitable for moulding a wind turbine blade.

Abstract: A mandrel for producing a fibre-reinforced composite part, in particular a blade for a wind turbine is disclosed. The mandrel includes an expandable body with an outer surface onto which a fibre material of the fibre-reinforced composite part is layable out. The expandable body is expandable in an expanded state, wherein in the expanded state the outer surface forms an interior shape of the fibre-reinforced composite part to be produced. Moreover, the expandable body is collapsible in a collapsed state.

Abstract: A method and an arrangement to improve the production of a blade, preferably to improve the production of a wind turbine blade is provided. A first container includes a resin. The first container is connected with a degas-system, thus the resin is provided to the degas-system. The degas-system is constructed and designed in a way that the amount of gas within the provided resin is reduced. Thus gas-reduced resin is produced, which is mixable with a hardener. The resin-hardener-mixture is applicable for an injection into an enclosed composite structure, which is used to produce the blade.

Abstract: The present invention relates to a method of manufacturing a blade for a wind turbine, wherein the blade is made in one or more moulds; and wherein the blade has integrally moulded root bushings in the root of the blade for direct or indirect attachment to a hub in a wind turbine. The novel aspect of the invention is that the root bushings (203) in the root (201) of the blade are leveled by shortening of at least one of the root bushings prior to the blade being removed from a supporting mould (205). The invention further relates to a blade made in accordance with the method and a leveling unit (207) for leveling the root of the blade, wherein the leveling unit comprises means for mounting on a mould.

Abstract: A mould for building up a blade is described. The mould has an inner surface for supporting a plurality of layers forming the blade. The mould also has at least one inlet for injecting a matrix material which penetrates the layers to build up the blade. The at least one inlet is integrated into the inner surface of the mould.

Abstract: A method for producing a composite structure comprising fibre reinforced material by means of vacuum assisted resin transfer moulding is described. The fibre material is impregnated with liquid resin, and the method comprising the steps of: a) providing a forming structure comprising a rigid mould part and a second mould part, b) placing the fibre material in the rigid mould part, c) sealing the second mould part against the rigid mould part to form a mould cavity, d) connecting a source of uncured fluid resin to at least one resin inlet communicating with the mould cavity, e) connecting at least one vacuum outlet communicating with the mould cavity, f) evacuating the interior of the forming structure through the at least one vacuum outlet, g) supplying uncured resin from the source of uncured resin to the mould cavity through the at least one resin inlet so as to fill the mould cavity with resin, and h) curing the resin in order to form the composite structure.

Abstract: The present invention relates to a method for producing a composite structure comprising fibre reinforced material by means of vacuum assisted resin transfer moulding, where fibre material is impregnated with liquid resin. The method comprises an evacuation process of a mould cavity by initially providing an under-pressure in a part of the mould cavity in order to provide a first vacuum front having a first pressure gradient oriented towards a first side of the forming structure, and a second vacuum front with a second pressure gradient oriented towards a second side of the forming structure, and controlling the first vacuum front and the second front to move towards the first side and the second side of the forming structure, respectively.

Abstract: The present invention relates to a method of manufacturing a blade for a wind turbine, wherein the blade is made in one or more moulds; and wherein the blade has integrally moulded root bushings in the root of the blade for direct or indirect attachment to a hub in a wind turbine. The novel aspect of the invention is that the root bushings (203) in the root (201) of the blade are leveled by shortening of at least one of the root bushings prior to the blade being removed from a supporting mould (205). The invention further relates to a blade made in accordance with the method and a leveling unit (207) for leveling the root of the blade, wherein the leveling unit comprises means for mounting on a mould.

Abstract: A mould assembly comprises a first (1) and a second mould part (2) said mould assembly further comprising a hinge mechanism optionally detachably connected to the two mould parts.