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 in a production process under pressure and thermal influence. A surface of the molded part has at least one elevation formed by fiber-containing material that, during the production of the molded part, has been suctioned into a corresponding opening in a molding surface of a molding tool when steam, which escapes from the fiber-containing material during pressing, is removed. The at least one elevation is arranged in a first surface portion that has a different configuration than an adjacent at least one second surface portion. The at least one elevation is integrated into the configuration of the first surface portion.

1 . A three-dimensional molded part made of fiber-containing material that is produced in a production process under pressure and thermal influence, wherein a surface of the molded part has at least one elevation formed by fiber-containing material that, during the production of the molded part, has been suctioned into a corresponding opening in a molding surface of a molding tool when steam that escapes from the fiber-containing material during pressing is removed, wherein the at least one elevation is arranged in a first surface portion that has a configuration different from a configuration of an adjacent at least one second surface portion, and wherein the at least one elevation is integrated into the configuration of the first surface portion. 
     
     
         2 . The molded part according to  claim 1 , wherein the surface of the molded part has at least one design element that is formed by at least one region with reduced material thickness, wherein the reduced material thickness of the at least one region decreases with an increasing molded part height in a molding direction. 
     
     
         3 . The molded part according to  claim 1 , the molded part at least having at least one first elevation and at least one second elevation, wherein the at least one first elevation and the at least one second elevation differ from one another in their configuration. 
     
     
         4 . The molded part according to  claim 1 , wherein the configuration of the first surface portion is formed by a change in at least one of a surface type, orientation, arrangement, structure, material type, and profile compared to the at least one second surface portion. 
     
     
         5 . The molded part according to  claim 1 , wherein the configuration of the first surface portion is formed by a change in a marking and/or a formation element. 
     
     
         6 . The molded part according to  claim 1 , wherein the first surface portion comprises a region with product features, product representations, instructions for use of a product, and/or disposal of the molded part. 
     
     
         7 . The molded part according to  claim 1 , wherein:
 the first surface portion and/or the at least one second surface portion are configured to be located in a wall region, an edge region, and/or a base region of a molded part, and/or   the at least one elevation is arranged on an outer surface of the molded part and extends away from an outer surface of the molded part.   
     
     
         8 . The molded part according to  claim 1 , wherein the at least one elevation has an oval, elongate, polygonal, or round cross section at least in portions. 
     
     
         9 . The molded part according to  claim 1 , wherein the at least one elevation is formed as a design element. 
     
     
         10 . The molded part according to  claim 1 , wherein the at least one elevation is formed as a functional element. 
     
     
         11 . The molded part according to  claim 1 , wherein the fiber-containing material comprises at least 50 wt. % of plant fibers and/or cellulose fibers. 
     
     
         12 . A molding tool for producing molded parts, wherein the molding tool has at least one molding surface for pressing fiber-containing material to form a three-dimensional molded body, wherein the at least one molding surface has at least one opening for discharging steam from the fiber-containing material during a pressing process, wherein the at least one opening is arranged in a region that forms a transition between at least two surface portions, and wherein the at least one opening is integrated into an embossing region of the at least one molding surface for at least a first surface portion of the molded part.