Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Patent
1986-08-11
1987-11-03
Schmidt, Frederick R.
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
493224, 493226, 493478, 493926, B31B 2386
Patent
active
047041005
ABSTRACT:
An elongate apparatus for forming a plurality of plastic bags or pouches from a continuous length of thermoplastic film, in which the moving film is folded to form a double thickness which is open inwardly from one edge, and is folded inwardly from said one edge to form a flap ply which is treated at a plurality of aligned workstations to form physical bag features, such as to form spaced hanger-receiving slits, insert spaced hangers, form a longitudinal hanger-confining heat seam, fold out the flap ply, apply spaced adhesive closures, form V-cuts in the flap ply and fold back the flap ply to overlie the double ply prior to forming heat-seal transverse cuts which segregate the web into a plurality of plastic bags or pouches. A preferred embodiment comprises mounting each of the workstations on a carriage member which is normally fixed relative to the frame of the apparatus but is releasable for movement along the direction of the web, while the web is moving, in order to reposition the workstations simultaneously relative to the locations of the heat seal transverse cuts whenever the moving web creeps or otherwise loses alignment and causes the physical bag features to become off-center relative to the transverse cuts.
REFERENCES:
patent: 3511735 (1970-05-01), Lindley
patent: 3568576 (1971-03-01), Lehmacher
patent: 3698289 (1972-10-01), Kamins et al.
patent: 3773591 (1973-11-01), Blair
patent: 3859894 (1975-01-01), Mundus
patent: 4216705 (1980-08-01), Achelpohl et al.
Green Clarence A.
Perman Martey R.
Schmidt Frederick R.
Terrell William E.
Tully Thomas L.
LandOfFree
Bag making apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bag making apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bag making apparatus and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1672648