Process for producing bicoloured aluminium containers

Abstract

The invention concerns an aluminium container ( 1 ) issued from the process of deep drawing an aluminium foil ( 6 ) to form a container body ( 7 ), cutting the edges of the container body, curling said edges on the exterior side of the container body in order to form a curled edge ( 2 ) and closing the container body by a foil/lid/membrane ( 3 ) wherein the colour of the curled edge is different from the natural colour of the aluminium foil.

1 . Process for producing an aluminium container comprising the steps of:
 cutting an aluminium foil to produce a piece of aluminium corresponding to the dimensions of the container;   deep drawing the piece of aluminium to form a container body and rolling the edges of the container body on the exterior side of the deep drawn container in order to form a curled edge; and   each of the faces of the starting aluminium foil presents a color treatment of different color than the other face.   
     
     
         2 . Process according to  claim 1  wherein at least one color treatment is achieved with a food compatible paint composition. 
     
     
         3 . Process according to  claim 2  wherein the piece of aluminium is deep drawn so that an inside of the container body presents the color treatment that is achieved with a food compatible pigment and lacquer. 
     
     
         4 . Process according to  claim 1  comprising filling the container body and closing the container body using a lid. 
     
     
         5 . Aluminium container produced by deep drawing an aluminium foil to form a container body and rolling edges of the container body on an exterior face of the container body in order to form a curled edge wherein the color of the curled edge is different from the natural color of the aluminium foil. 
     
     
         6 . Aluminium container according to  claim 5  wherein the color of the exterior side of the container body is different from the natural color of the aluminium foil. 
     
     
         7 . Aluminium container according to  claim 5  wherein a lid is attached to a flange-like rim between the container body and the curled edge. 
     
     
         8 . Aluminium container according to  claim 5  comprising an edible product. 
     
     
         9 . Aluminium container according to  claim 5  that is designed to contain at least a beverage ingredient designed for insertion in a beverage production device in which a liquid enters the container in order to interact with the ingredient in the container and to drain a beverage from the container.