Claims
- 1. A method of making and filling bags, the method comprising the steps of sequentially:forming into a stack a plurality of bags each having an open end provided with an end flap formed with at least one hole with the end flaps and holes aligned in the stack; blocking together the stack of bags by adhering together blocking regions of the end flaps, whereby the stack is stabilized; transporting the blocked bag stack to a preliminary station of a filling machine; inserting a holding member through the holes of the blocked bag stack; removing the blocking regions of the bags of the stack and thereby leaving the bags of the stack only stabilized relative to each other by the holding member; transporting the bags held together by the holding member to a filling station of the filling machine; and inserting a product into the bags one after the other and generally simultaneously stripping the bags from the holding member.
- 2. The method defined in claim 1 wherein the bags are each formed with an arcuate perforation line delimiting the respective blocking region and extending to a bag edge, the blocking regions being removed by tearing all the blocking regions of all the bags of a stack simultaneously at the respective perforation lines as an end block.
- 3. The method defined in claim 2 wherein the blocking regions are removed by clamping the bag stack adjacent the blocking regions, gripping the blocking regions of all the bags in the stack, and displacing the gripped blocking regions and bag stack transversely relative to each other to tear the regions loose at the respective perforation lines.
- 4. The method defined in claim 1 wherein each bag is formed with two blocking regions and two holes in the respective upper flap, the blocking regions of each bag being spaced apart by a distance greater than a spacing between the two holes.
- 5. An apparatus for making and filling bags, the apparatus comprising:means for stacking a plurality of bags each having an open end provided with an end flap formed with at least one hole with the end flaps and holes aligned; means for blocking together the stacked bags by adhering together blocking regions of the end flaps, whereby the stack is stabilized; means for transporting the blocked bag stack to a preliminary station of a filling machine; means for inserting a holding member through the holes of the blocked bag stack; means for removing the blocking regions of the bags of the stack and thereby leaving the bags of the stack only stabilized relative to each other by the holding member; means for transporting the bags held together by the holding member to a filling station of the filling machine; and means for inserting a product into the bags one after the other and generally simultaneously stripping the bags from the holding member.
- 6. The apparatus defined in claim 5 wherein the means for removing includes first clamp members for gripping the bag stack adjacent the blocking regions and second clamp members movable relative to the first clamp members for gripping the blocking regions.
- 7. The apparatus defined in claim 6 wherein the first members grip the bag stack from above and below and hold it stationary and the second members also grip the blocking regions from above and below and are movable vertically relative to the first members.
Priority Claims (1)
Number |
Date |
Country |
Kind |
198 12 739 |
Mar 1998 |
DE |
|
CROSS REFERENCE TO RELATED APPLICATIONS
This application is the U.S. national phase of PCT application PCT/EP99/01580 filed Mar. 11, 1999 with a claim to the priority of German patent application 19812739.1 itself filed Mar. 24, 1998.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP99/01580 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/48677 |
9/30/1999 |
WO |
A |
US Referenced Citations (13)
Foreign Referenced Citations (1)
Number |
Date |
Country |
38 34 115 |
May 1990 |
DE |