Three-dimensional molded body and method of manufacturing a three-dimensional molded body of fiber-containing material

Abstract

A three-dimensional molded body of fiber-containing material and a method for producing a three-dimensional molded body of fiber-containing material are described. The molded body has a circumferential side wall, which surrounds an interior of the molded body, and an edge region. A stacking shoulder is formed in a transition from the side wall to the edge region, and the edge region has an undercut.

1 . A three-dimensional molded body of fiber-containing material, the molded body having a circumferential side wall, which surrounds an interior of the molded body, and an edge region, wherein a stacking shoulder is formed in a transition from the side wall to the edge region, and wherein the edge region has an undercut. 
     
     
         2 . The three-dimensional molded body according to  claim 1 , wherein the stacking shoulder merges into the undercut. 
     
     
         3 . The three-dimensional molded body according to  claim 1 , wherein a cross-section of the undercut has a decreasing cross-section proceeding from the stacking shoulder in a direction of a region remote from the undercut. 
     
     
         4 . The three-dimensional molded body according to  claim 1 , wherein the side wall has a degressive profile at least in portions, proceeding from the edge region to a base region, wherein a cross-section of the side wall in the base region is smaller than a cross-section of the side wall in the edge region. 
     
     
         5 . The three-dimensional molded body according to  claim 4 , wherein the degressive profile extends from the base region to the edge region. 
     
     
         6 . The three-dimensional molded body according to  claim 4 , wherein the degressive profile along the side wall is divided into sections of equal length per definable distance, wherein a gradient of at least two consecutive sections is different from one another. 
     
     
         7 . The three-dimensional molded body according to  claim 6 , wherein the definable distance is defined parallel to a height of the interior or along a surface of the side wall. 
     
     
         8 . The three-dimensional molded body according to  claim 4 , wherein the degressive profile is shaped in such a way that, when three-dimensional molded bodies are stacked, there is only line contact between at least two stacked three-dimensional molded bodies in a region of adjacent side walls of the at least two stacked three-dimensional molded bodies. 
     
     
         9 . The three-dimensional molded body according to  claim 1 , wherein the side wall has a straight and a curved profile in different portions of the side wall. 
     
     
         10 . A method for producing a three-dimensional molded body, comprising:
 providing a fiber-containing material;   introducing the fiber-containing material into a mold of a forming tool;   closing the forming tool by relative displacement of the mold and a corresponding mold element; and   pressing the fiber-containing material into a three-dimensional molded body to form a stacking shoulder in a transition from a side wall to an edge region and to form an undercut that extends from the stacking shoulder to an open region of the molded body.