Method of filling a container and container capable of being filled

Abstract

Provided is a method for filling a container with a liquid in which the container is filled via an opening of the container and an internal volume of the container increases during the filling process and the internal volume of the filled volume is at least twice the volume of the unfilled container. Also provided is a device for filling containers, and a container having an opening, a base region, and a main body integrally formed with the opening and the base region, the main body being bent by a specified bending angle around a specified circumferential folding edge of the main body in such a way that the opening of the container is arranged closer to the base region than the circumferential folding edge is, wherein the position of the folding edge relative to the base region of the container can be changed during an expansion of the container.

1 . A method of filling a container with a liquid, wherein the container is filled by way of an aperture of the container and an internal volume of the container is enlarged during the filling procedure and the internal volume of the filled container amounts to at least twice the volume of the non-filled container. 
     
     
         2 . The method according to  claim 1 , wherein the container is expanded by an expansion procedure before the filling procedure. 
     
     
         3 . The method according to  claim 1 , wherein the container is expanded by a filling pressure during the filling. 
     
     
         4 . The method according to  claim 1 , wherein a distance between a base area and the aperture of the container varies during the filling. 
     
     
         5 . The method according to  claim 1 , wherein the container has a continuous folding edge. 
     
     
         6 . The method according to  claim 5 , wherein during the filling procedure the aperture of the container is moved away from the base area of the container at a pre-set speed v 1  at least for a time and at the same time the folding edge is moved away from the base area at a speed (v 1 / 2 ) which is half this speed (v 1 ). 
     
     
         7 . The method according to  claim 1 , wherein a filling element is locked with respect to the aperture during the filling. 
     
     
         8 . The method according to  claim 2 , wherein the expanded container is compressed, and in particular folded, in such a way that the internal volume thereof is reduced. 
     
     
         9 . An apparatus for the filling of expanded containers, with a filling element through which a liquid is capable of being supplied to the container by way of the aperture thereof, with a first holding device for holding a base area of the container and with a second holding device for holding an aperture area of the container, wherein the first holding device and the second holding device are movable with respect to each other in a longitudinal direction (L) of the container, wherein a holding device has a cross-section which is smaller at least locally than an internal cross-section of the filled container. 
     
     
         10 . The apparatus according to  claim 9 , wherein the apparatus has a sealing element which seals off a region between the aperture of the container and the filling element. 
     
     
         11 . The apparatus according to  claim 9 , wherein the sealing element is capable of being fastened to the aperture of the container. 
     
     
         12 . A container capable of being filled with a liquid, with an aperture, a base area and a main body formed in one piece with the aperture and the base area, wherein the main body is bent in such a way by a pre-set bending angle around a pre-set continuous folding edge of the main body that the aperture of the container is situated closer to the base area than the continuous folding edge, wherein a relative position of the folding edge is capable of being changed with respect to the base area of the container during an expansion of the container. 
     
     
         13 . The container according to  claim 12 , wherein an outer surface of the main body is situated at least in part in a continuous manner at least locally opposite an inner surface of the main body. 
     
     
         14 . The container according to  claim 12 , wherein the outer surface and the inner surface of the container are at a distance from each other at least locally which is greater than 0.2 cm. 
     
     
         15 . The container according to  claim 12 , wherein a wall thickness of the main body is substantially constant at least locally.