Method for producing an interior trim part of a vehicle and molding tool

A method for producing an interior trim part of a vehicle, the method comprising:

• providing a molding tool comprising a first molding tool element, a second molding tool element, and a slide, wherein a cavity is formed between the first molding tool element and the second molding tool element and wherein the slide is displaceably connected to the first molding tool element;
• arranging a decorative skin with a visible side of the decorative skin on the first molding tool element and arranging a backing on the second molding tool element such that a hollow area is formed between the backing and a reverse side of the decorative skin facing away from the visible side of the decorative skin;
• pressing the reverse side of the decorative skin against a lateral surface of the backing by displacing the slide along the first molding tool element so as to seal the hollow area;
• adding a foamable mixture to the hollow area;
• foaming the mixture such that a foam layer that fills the sealed hollow area is formed;
• and
• increasing a distance, in a direction that is different from a displacement direction of the slide, between the first molding tool element and the second molding tool element prior to and/or during the foaming process, so that the hollow area is enlarged by sliding the lateral surface of the backing along the reverse side of the decorative skin.