Food or edible material: processes – compositions – and products – Processes – Packaging or treatment of packaged product
Patent
1994-03-23
1995-09-05
Weinstein, Steven
Food or edible material: processes, compositions, and products
Processes
Packaging or treatment of packaged product
426394, 426415, 426418, 426316, 53449, 53478, 533295, 53433, 53434, B65B 3100, B65B 2500
Patent
active
054477360
ABSTRACT:
A method of packaging a food product employing a tray having side walls defining a cavity in an outwardly directed flange extending around the perimeter of the tray, the flange being adapted to receive a pair of membranes to enclose the tray. The lower membrane is the more permeable of the two. It may be attached to a first surface of the flange. The second membrane is attached to a second outer surface of the flange without direct connection except through the tray to the more permeable membrane. The two connection surfaces may be separated by a depression to facilitate the cutting away of the material forming the more permeable membrane in a continuous manufacturing process. With the less permeable membrane in place, a desired gaseous environment may be maintained within the package. When it is desired to change the gaseous environment, the upper less permeable membrane may be peeled away allowing gaseous communication through the lower more permeable membrane.
REFERENCES:
patent: 2887244 (1959-05-01), Betner
patent: 3344974 (1967-10-01), Bodstrom
patent: 3388827 (1968-06-01), Thanhauser et al.
patent: 3391847 (1968-07-01), Christine et al.
patent: 3552634 (1971-01-01), Ollier et al.
patent: 3561668 (1971-02-01), Bergstrom
patent: 3574642 (1971-04-01), Weinke
patent: 3681092 (1972-08-01), Titchenal et al.
patent: 3770119 (1973-11-01), Hultberg et al.
patent: 3904074 (1975-09-01), Hoffman et al.
patent: 3997677 (1976-12-01), Hirsch et al.
patent: 4055672 (1977-10-01), Hirsch et al.
patent: 4124141 (1978-11-01), Armentrout
patent: 4201795 (1980-05-01), Yamanaka
patent: 4300700 (1981-11-01), Change
patent: 4340138 (1982-07-01), Bernhardt
patent: 4346833 (1982-08-01), Bernhardt
patent: 4350263 (1982-09-01), Hoffman
patent: 4469258 (1984-09-01), Wright et al.
patent: 4555043 (1985-11-01), Bernhardt
patent: 4555056 (1985-11-01), Bernhardt
patent: 4815602 (1989-03-01), Schirmer
patent: 4818548 (1989-04-01), Cheng
patent: 4840271 (1989-06-01), Garwood
patent: 4886690 (1989-12-01), Davis et al.
patent: 4889731 (1989-12-01), Williams
patent: 4901505 (1990-02-01), Williams
patent: 4910033 (1990-03-01), Bekele et al.
patent: 4939332 (1990-07-01), Hahn
patent: 4991717 (1991-02-01), May
patent: 5007231 (1991-04-01), Ingemann
patent: 5132151 (1992-07-01), Branet
patent: 5156329 (1992-10-01), Farrell
patent: 5226531 (1993-07-01), Garwood
Weinstein Steven
World Class Packaging Systems, Inc.
LandOfFree
Method of packaging food product does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of packaging food product, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of packaging food product will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-471300