Flexible container, method and device for filling said flexible container

1. A device for filling a flexible container, the flexible container comprising a container body comprising container walls that define a container interior; a container socket connected to the container body and having a container opening through which the container interior is fillable; carrying loops connected to the container body for lifting the container; wherein the container socket has an initial retracted position in the container interior and is transferable from the initial retracted position into an upright filling position; wherein the container socket is at least partially comprised of an elastically expandable material, the device comprising:

a filling device insertable into a container socket of the flexible container which container socket is positioned in a retracted position in a container interior of the flexible container;

wherein the filling device contacts the container socket when inserted and transfers the container socket from the retracted position inside the container interior into an upright filling position.

2. The device according to claim 1 , wherein the filling device comprises a filling tube with which the container socket is expandable.

3. The device according to claim 2 , wherein the filling tube has a blowing sleeve for expanding the container socket.

4. The device according to claim 1 , wherein the filling device comprises a filling tube against which the container socket is attracted by suction and transferred in the upright filling position.

5. The device according to claim 1 , wherein the filling device has a vacuum device by means of which container wall areas adjacent to the container socket are supplied with vacuum.

6. The device according to claim 5 , wherein the vacuum device is provided on a single arm robot.

7. The device according to claim 5 , wherein the vacuum device lifts the flexible container and transfers the flexible container into a filling position.

8. A method for filling a flexible container, the flexible container comprising a container body comprising container walls that define a container interior; a container socket connected to the container body and having a container opening through which the container interior is fillable; carrying loops connected to the container body for lifting the container; wherein the container socket has an initial retracted position in the container interior and is transferable from the initial retracted position into an upright filling position; wherein the container socket is at least partially comprised of an elastically expandable material, the method comprising the steps of:

inserting into a container socket of a flexible container a filling tube, wherein the container socket is in an initial retracted position inside the flexible container;

contacting with the filling tube the container socket in the initial retracted position;

transferring the container socket to an upright filling position and keeping the container socket secured on the filling tube in the upright filling position;

introducing bulk material through the filling tube into the flexible container.

9. The method according to claim 8 , wherein the container socket is expandable by compressed air supplied through the filling tube.

10. The method according to claim 8 , further comprising the steps of lifting and weighing the flexible container by carrying loops attached to the flexible container.

11. The method according to claim 8 , further comprising the steps of blowing air into the flexible container and weighing the container in an upright position.

12. The method according to claim 8 , further comprising the step of closing the container socket after filling by a clip or by fusing.