Packaging
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 18, 1990
Grant Date -
N/A
app pub date -
Nov 23, 1988
filing date -
Dec 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a system of packaging of foodstuffs in containers of rectangular horizontal section, each open-topped container is sterilized, filled, and closed with a sterilized closure. The closure is of a laminate including a thermoplastics layer of sufficient thickness to fill an internal discontinuity of the container mouth during heat-sealing of the closure to the container. In making the closure, a portion of laminate is partially severed to form a flap and the laminate is clamped around the flap and drawn to form a shallow dish, to the inside of the base of which is heat-sealed a diaphragm including a pull tab. The thermoplastics layer is on a reflective metal layer and incorporates infrared-absorbing particles and infrared-reflective particles.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 10 Citation Count
- B65D Class
- 0 % this patent is cited more than
- 35 Age