Method for cleaning molding tools for molding fibrous materials and molding tool

Abstract

A method for cleaning molding tools for molding fibrous materials and a molding tool are described. The method includes introducing a liquid medium to the molding tool where the molding tool has openings in at least one region of a shaping surface. The openings are connected to channels for discharging water vapor exiting during a molding process under pressure and heat input. The openings and channels for discharging water vapor are provided in a discharge direction out of the molding tool. For cleaning the openings and channels, a medium in liquid form is introduced into at least one channel of the molding tool counter to the discharge direction when the molding tool has a minimum temperature. The introduced liquid medium changes into a gaseous state by contact with the molding tool and exits from the channels and openings counter to the discharge direction.

Dependencies are inferred from the claim text.