Package making – Methods – Closing package or filled receptacle
Patent
1997-06-17
1998-08-11
Coan, James F.
Package making
Methods
Closing package or filled receptacle
533707, 533737, 533759, B65B 5110
Patent
active
057911258
ABSTRACT:
A rotary heat sealer and method therefor useable for thermally sealing overlapping film layers wrapped about a load at a load wrapping station. The rotary heat sealer includes a plurality of heat sealing disks each having a peripherally disposed heating element, and a rotatable shaft disposed through a central opening of the plurality of heat sealing disks, wherein the heat sealing disks are resiliently coupled to the rotatable shaft by spring members so that the heat sealing disks are rotatable with the shaft and the heat sealing disks are independently movable transversely relative to the rotatable shaft axis. The rotary heat sealer is movable toward the load to engage the heating elements thereof with overlapping film layers wrapped about the load to thermally seal an overlapping film tail to underlying film layers, whereby the transversely movable heat sealing disks compensate for variations in the shape of the load, thereby providing improved welding of overlapping film layers.
REFERENCES:
patent: 2803100 (1957-08-01), Aalseth
patent: 3524301 (1970-08-01), Zimmerman
patent: 3572004 (1971-03-01), Carmichael
patent: 3850780 (1974-11-01), Crawford et al.
patent: 4905446 (1990-03-01), Dieckbernd et al.
patent: 5054269 (1991-10-01), Leino
patent: 5088270 (1992-02-01), Diehl
patent: 5423161 (1995-06-01), Huson et al.
patent: 5447009 (1995-09-01), Oleksy et al.
patent: 5628163 (1997-05-01), Keopple et al.
patent: 5687545 (1997-11-01), Baker
Coan James F.
Illinois Tool Works Inc.
Kim Gene L.
LandOfFree
Rotary heat sealer and method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotary heat sealer and method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary heat sealer and method therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-378134