Package making – With cover-adjunct application or formation – By printing
Patent
1973-02-28
1976-06-29
Spruill, Robert L.
Package making
With cover-adjunct application or formation
By printing
53373, B65B 500, B65B 702, B65B 4312, B65B 5114
Patent
active
039656535
ABSTRACT:
A packaging system wherein a web of interconnected heat-sealable bags are successively fed to a loading station where the bags are opened by an improved air flow system and loaded. An improved sealing and detaching assembly grips a loaded bag and isolates a region of the bag where a heat seal is to be formed from external forces thereby (1) permitting the formation of a heat seal in bag portions which are relaxed and, therefore, not subject to tearing or distorting, and (2) permitting the assembly to pivot relative to the web to tear off a loaded bag at the same time a heat seal is being formed on the bag. The assembly includes an improved resilient closure bar which, during a forward stroke of travel (1) engages one face of a loaded bag, (2) closes the bag, (3) clamps the opposite bag face against a pair of spaced gripper bars which isolate a region of the bag for heat sealing, and (4) brings the isolated region into contact with a heater bar to effect a heat seal. The gripper bars are spring mounted and biased to a position forward of the heater bar to effectively isolate a region of the bag for sealing prior to seal formation.
REFERENCES:
patent: 2837883 (1958-06-01), Bracey
patent: 3045403 (1962-07-01), Mitchell
patent: 3209513 (1965-10-01), Cochrane
patent: 3273307 (1966-09-01), Burt
patent: 3473288 (1969-10-01), Nakamura et al.
patent: 3508378 (1970-04-01), Fehr et al.
patent: 3551260 (1970-12-01), Catherwood
patent: 3564810 (1971-02-01), Faletti et al.
patent: 3597587 (1971-08-01), Baum
LandOfFree
Packaging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Packaging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Packaging apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1268414