Method and injection mould for producing a product from an insert and plastic body injection-moulded thereon

A method for producing a product comprising an insert having an edge which is to be reinforced and a plastic body which is injection-moulded onto the edge, the plastic body surrounding an edge region of the insert on both sides and at the end face, the method comprising:

• a. providing an injection mould having a cavity, a cavity-forming wall being formed by a movable mould part which can be displaced during an injection process so that an additional volume of the cavity is exposed when the movable mould part is moved away;
• b. inserting the insert into the injection mould so that the edge region to be overmoulded is arranged loose in the cavity of the injection mould, a first side surface of the edge region facing the movable mould part and a second side surface of the edge region facing away from the movable mould part;
• c. injecting a polymer melt into the cavity at an injection point, so that the polymer melt first flows onto the second side surface of the edge region, which faces away from the movable mould part, and pushes the first side surface of the edge region, which faces the movable mould part, onto the movable mould part;
• d. moving away the movable mould part and filling the exposed volume of the cavity in that the polymer melt flows along the first side surface of the edge region, which faces the movable mould part;
• e. completing the injection process and removing the product from the mould.