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US 4,617,785 AGranted
Packaging apparatus
AssigneeKabushiki Kaisha Daisei Kikai
InventorsHajime Chikatani, Sanji Kawakami
Life of this patent
Estimating the term…
Abstract
Disclosed is a method and apparatus for forming packages from continuous folded sheets. A sheet is folded and formed into bags by bonding and cutting. Prior to the formation of the bags, plates are introduced between the sheets. The plates are mounted so that they can separate from one another to open the bags after the bags have been fully formed, so that the material can be introduced into the bags. Instead of plates, the elements for opening the bags can be wires, suction elements or blowers.
Claims8
A packaging apparatus comprising:
- means for positioning sheet materials next to one another to form at least two facing sheets;
- means for bonding portions of said at least two facing sheets;
- means for cutting said bonded sheets to form bags;
- bag opening means comprising bag opening members, at least one of said bag opening members being mounted for movement between said at least two facing sheets prior to said bonding step;
- means associated with said bag opening members for further separating said at least two facing sheets and fully opening said bags after said bonding step;
- and
- movable endless chains for movably supporting each of said bag opening members for movement between said at least two facing sheets prior to said bonding step.
4 more elements
Dependencies are inferred from the claim text.