Three-dimensional molded part made of fiber-containing material and molding tool for the production of molded parts made of fiber-containing material

Abstract

A three-dimensional molded part made of fiber-containing material and a molding tool for producing molded parts made of fiber-containing material are described. The molded part is produced from fiber-containing material in a production process under pressure and thermal action. A surface of the molded part has elevations formed by fiber-containing material that has been sucked into corresponding openings in a molding surface of a molding tool during the production of the molded part when steam emerging from the fiber-containing material during pressing is removed. The elevations form at least one pattern along a surface of the molded part.

1 . A three-dimensional molded part made of fiber-containing material that is produced in a production process under pressure and thermal action, wherein a surface of the molded part has elevations formed by the fiber-containing material that has been sucked into corresponding openings in a molding surface of a molding tool during the production of the molded part when steam escapes from the fiber-containing material during pressing, and wherein the elevations form at least one pattern along a surface of the molded part. 
     
     
         2 . The molded part according to  claim 1 , wherein the at least one pattern is integrated at least partially into a transition between at least a first surface portion and a second surface portion of the surface and/or into a design element on the surface. 
     
     
         3 . The molded part according to  claim 2 , wherein the design element is formed by at least one region with a reduced material thickness, wherein the material thickness of the at least one region decreases with an increasing molded part height in a molding direction. 
     
     
         4 . The molded part according to  claim 2 , wherein the first surface portion differs from the second surface portion with regard to at least one of surface type, orientation, arrangement, structure, material type, and profile. 
     
     
         5 . The molded part according to  claim 1 , wherein the at least one pattern represents a product feature, a product representation, an instruction for use of a product, and/or disposal of the molded part. 
     
     
         6 . The molded part according to  claim 1 , wherein the at least one pattern extends over a wall region, an edge region, and/or a bottom region of a molded part. 
     
     
         7 . The molded part according to  claim 1 , wherein the elevations are arranged on an outer surface of the molded part and extend away from the outer surface of the molded part. 
     
     
         8 . The molded part according to  claim 1 , wherein at least one of the elevations has an at least partial oval, elongate, polygonal, or round cross section. 
     
     
         9 . The molded part according to  claim 1 , wherein at least one elevation is formed as a design element. 
     
     
         10 . The molded part according to  claim 1 , wherein the fiber-containing material comprises at least 50 wt. % of plant fibers and/or cellulose fibers. 
     
     
         11 . A molding tool for producing molded parts from fiber-containing material, wherein the molding tool has at least one molding surface for pressing the fiber-containing material into a three-dimensional molded body, wherein the at least one molding surface has openings for discharging steam from the fiber-containing material during a pressing process, and wherein the openings are arranged in a form of a pattern.