Package making – Interrelated or safety controls
Patent
1977-03-09
1978-03-21
Spruill, Robert Louis
Package making
Interrelated or safety controls
53373, 156290, 156581, 156583, B65B 5114, B65B 5130
Patent
active
040795705
ABSTRACT:
This invention is a heatseal die which is intended to replace one die of a pair of heatseal dies normally employed in a packaging machine. The die of the invention differs from the die normally employed in that the lower portion of the die face, which forms the heatseal at the top of the package, has ribs which are horizontal instead of vertical. Being horizontal, the ribs intersect the vertical ribs of an opposing die, instread of meshing with them as the ribs of the die normally employed do. The pattern of point seals formed where the ribs intersect forms a good gastight seal but reduces the force required to break the seal, thereby permitting the package to be opened more easily. In a preferred embodiment, the lower portion of the die face is detachable so it can be easily replaced with another die face having a different rib pattern, so that when it is desired to run a film having different heatseal characteristics on the packagaing machine, the die face can be quickly replaced with one which is better suited for the differnt heatseal characteristics.
REFERENCES:
patent: 2227497 (1941-01-01), Hallman
patent: 2435560 (1948-02-01), Richens
patent: 2626494 (1953-01-01), Lewis
patent: 2884988 (1959-05-01), D'Angelo
patent: 3016667 (1962-01-01), Kerhoas
patent: 3932260 (1976-01-01), Balentine
patent: 4001075 (1977-01-01), Menzner et al.
Crown Zellerbach Corporation
Horton Corwin R.
Spruill Robert Louis
Teigland Stanley M.
LandOfFree
Quick-change heatseal die for forming easy-open prackages does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Quick-change heatseal die for forming easy-open prackages, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quick-change heatseal die for forming easy-open prackages will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-564722