Method for producing a trim part of a motor vehicle

A method for producing a three-dimensionally shaped trim part of a motor vehicle having a visible side and a mounting side, the method comprising:

• injecting a flowable material with pressure into a chamber of an injection molding tool that has at least two mold shells, which, when assembled, form the chamber with a negative mold of the trim part, wherein at least one first mold shell of the at least two mold shells forms the visible side and at least one second mold shell of the at least two mold shells forms the mounting side of the trim part;
• hardening the material in the chamber to form a hardened material;
• producing a gas pressure that acts in a planar manner between the at least one second mold shell and the material during the hardening of the material;
• removing the hardened material from the chamber of the injection molding tool, the hardened material removed from the chamber being the trim part,
• wherein the at least one first mold shell is cooled during the hardening of the material, and
• wherein the at least one first mold shell is provided with coolant channels through which coolant flows to cool the at least one first mold shell during the hardening of the material, such that a side of the material facing the at least one first mold shell cools faster than a side of the material facing the at least one second mold shell.