Abstract: A method for blow molding a container having a fiber-based shell (20) is disclosed. The method comprises the steps of providing a fiber-based shell (20) introducing a preform (30) into the fiber-based shell (20) in order to produce a semi-finished product (60) gripping the semi-finished product (60) by means of a gripper (40) transferring the semi-finished product (60) into a blow molding tool (50) and blowing the container. The gripper (40) presses an inner wall (21) of the fiber-based shell (20) onto an outer surface (31) of the preform (30).

Abstract: The invention relates to a blow mold (100) comprising a mold base (101) having a cavity (102) as the mold cavity, the cavity (102) having a bottom region (1), a center region (2) and a top region (3). When the blow mold (100) is closed, the center region (2) can be moved relative to the top region (1) and/or relative to the bottom region (3).