Method for manufacturing of a pre-form part for a wind turbine blade and mold for the manufacturing of a pre-form part

A method for manufacturing of a pre-form part for a wind turbine blade comprising at least one component and an adhesive, wherein the at least one component is a component comprising fibres, the method comprising:

• arranging the at least one component and at least one further component in a stack on a molding surface of a mold and arranging the adhesive at one or more discrete positions between the at least one component and the at least one further component;
• and
• heating the adhesive by providing an electric current to at least one actively heated layer, wherein the at least one component is used as actively heated layer and/or wherein at least one additional heating element provided and arranged on top of or below the at least one component or the stack is used as actively heated layer, wherein heating the adhesive results in the at least one component or the at least one component and the at least one further component being locally adhered at the one or more discrete positions;
• wherein a majority of the at least one component is not soaked with the adhesive during the arranging and/or is not locally adhered by the heating such that the majority of the at least one component may later be soaked with a resin;
• wherein the at least one actively heated layer is larger than the remainder of the stack in at least one dimension, wherein the at least one actively heated layer is arranged in such manner in or on the stack that it protrudes the remainder of the stack on at least two opposing sides of the stack after arrangement in or on the stack;
• and
• wherein the at least one actively heated layer and the at least one further component are arranged at least partly on an electrically conductive spool, or wherein the at least one actively heated layer is arranged at least partly on the electrically conductive spool and the at least one further component is arranged at least partly on a non-conductive spool, wherein the electrically conductive spool is used as an electrode for providing the electric current.