Method for producing a container comprising fibers and device for carrying out the method

Abstract

The disclosure relates to a method for producing a container comprising fibers, wherein the method comprises providing at least two different fluid fiber mixtures and introducing the fiber mixtures into a mold in which the container is formed such that at least two different continuous volume regions of the container which extend from an inner to an outer surface of the container are produced with different fiber mixtures. The disclosure further relates to a device for carrying out the method.

1 . Method for producing a container comprising fibers, wherein the method comprises:
 providing at least two different fluid fiber mixtures,   introducing the fiber mixtures into a mold in which the container is formed such that at least two different continuous volume regions of the container which extend from an inner to an outer surface of the container are produced with different fiber mixtures.   
     
     
         2 . Method according to  claim 1 , wherein the volume regions comprise two, three or more of the following volume regions: threads, base, sidewall, shoulder region, lid, neck region, support ring, base panel, groove contours, pinch or label region. 
     
     
         3 . Method according to  claim 1 , wherein a further fiber mixture is provided in sections in one or more of the at least two different continuous volume regions, wherein, the further fiber mixture is different from the at least two different fluid fiber mixtures. 
     
     
         4 . Method according to  claim 1 , wherein the at least two different fluid fiber mixtures are each provided in a separate supply tank. 
     
     
         5 . Method according to  claim 4 , wherein a turbidity of the at least two different fluid fiber mixtures is measured in each case by means of a turbidity sensor which is provided per separate supply tank. 
     
     
         6 . Method according to  claim 4 , wherein for each separate supply tank, one of the different fluid fiber mixtures is mixed by adding fibers to the supply tank containing the fluid or by adding fibers and adding fluid to the supply tank, wherein, additives are also added to the supply tank. 
     
     
         7 . Method according to  claim 1 , wherein the introduction comprises:
 introducing the at least two different fluid fiber mixtures, each via a respective feed line to an inlet device of the mold.   
     
     
         8 . Method according to  claim 1 , wherein the introduction comprises:
 mixing the at least two different fluid fiber mixtures to form a mixed, fluid fiber mixture, and   introducing the mixed, fluid fiber mixture via a common feed line to an inlet device of the mold.   
     
     
         9 . Method according to  claim 1 , further comprising:
 controlling an/the inlet device of the mold to discharge the fiber mixtures and controlling extraction openings in the mold such that the at least two different continuous volume regions of the container which extend from the inner to the outer surface of the container are produced with the different fiber mixtures.   
     
     
         10 . Device for carrying out a method for producing a container comprising fibers, wherein the device comprises:
 at least two supply tanks for providing different fluid fiber mixtures,   a mold for forming the container therein, and   at least one feed line for introducing the fiber mixtures into the mold such that at least two different continuous volume regions of the container which extend from an inner to an outer surface of the container can be produced with different fiber mixtures.   
     
     
         11 . The device according to  claim 10 , wherein each supply tank comprises a turbidity sensor for measuring a turbidity of the fluid fiber mixture present in the supply tank. 
     
     
         12 . Device according to  claim 10 , wherein each supply tank comprises a feed device for adding fibers or a feed device for adding fibers and a feed device for adding fluid to the supply tank for mixing one of the different fluid fiber mixture, wherein, each supply tank also comprises a feed device for adding additives to the supply tank. 
     
     
         13 . Device according to  claim 10 , wherein each supply tank is connected to an inlet device of the mold by means of a feed line, or wherein a feed line leads from each supply tank to a mixing valve for mixing the different fluid fiber mixtures to form a mixed fluid fiber mixture, and wherein a common feed line is connected from the mixing valve to an inlet device of the mold. 
     
     
         14 . Device according to  claim 10 , wherein the device further comprises:
 a first control device for controlling an/the inlet device of the mold to discharge the fiber mixtures and a second control device for controlling extraction openings in the mold such that the at least two different continuous volume regions of the container which extend from the inner to the outer surface of the container are produced with the different fiber mixtures.   
     
     
         15 . Device according to  claim 10 , wherein the mold comprises individually controllable extraction openings which are each arranged in a region in which the at least two different continuous volume regions of the container which extend from the inner to the outer surface of the container can be produced.