US3650775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic bag for packaging fresh red meat and method for making the same
Assignee: Union Carbide Corp
•
Filing: 1968-07-24
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Granted: 1972-03-21
•
Expires: 1988-07-24
Abstract
Abstract A film bag for packaging fresh red meats is formed of two dissimilar films one of which has good oxygen transmitting properties but a tendency to ''''block'''' to itself, the other of which is non-blocking. Either or both of the films may be shrinkable. The films may be supplied in kit form for the making of bags by the meat packer.
Inventors
- 👤 Selwyn Simon
- 👤 Donatas Tijunelis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; B; B31; B31B; B31B70/00; B65; B65B; B65B25/00; B65B25/06; B65B25/065; B65B25/067; B65D; B65D31/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545; B31B2155/00; B31B2155/002; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
15 words
A kit as defined in claim 1 in which said oxygen transmitting film is elastic.
Claim 2
Dependent Claim
15 words
A kit as defined in claim 1 in which said nonblocking film is heat shrinkable.
Claim 3
Dependent Claim
24 words
A kit as defined in claim 3 in which said oxygen transmitting film is dimensionally stable under heat shrinking conditions for said nonblocking film.
Claim 4
Dependent Claim
43 words
The kit as defined in claim 1 where continuous lengths of said pair of films is on a single roll with said oxygen transmission and nonblocking films in alternate plies and each of said ply of film being readily separable from the other.
Claim 5
Dependent Claim
22 words
The kit as defined in claim 1 where the said films are partially pre-formed into a plurality of consecutive separably attached bags.
Claim 6
Dependent Claim
16 words
The kit as defined in claim 1 where the said films are partially pre-formed into bags.
Claim 7
Dependent Claim
17 words
A kit as defined in claim 1 where said oxygen transmitting film is a polyvinyl chloride polymer.
Claim 8
Dependent Claim
16 words
A kit as defined in claim 8 where said nonblocking film is a polyvinyl chloride polymer.
Claim 9
Dependent Claim
16 words
The kit as defined in claim 9 wherein said nonblocking film contains diatomaceous earth incorporated therein.
Claim 10
Dependent Claim
135 words
A composite plastic film bag suitable for packaging fresh red meats comprising in combination, a pair of flexible plastic films having dissimilar properties, one of said pair of films being selected from the group of flexible thermoplastic films consisting of ethylene vinyl acetate and polyvinyl chloride said film being formulated so as to be characterized as clear, transparent, non-fogging and providing an oxygen transmission rate in a package formed from said pair of films at least about 140 cc./100 sq. in./ 24 hrs./atm. at 32* F., and so as to have a tendency to block to itself and the other of said pair of films formulated so as to be nonblocking with said oxygen transmitting film, said plastic bag having an open end and formed by heat sealing superimposed plies of said pair of films.
Claim 11
Dependent Claim
15 words
A bag as defined in claim 11 in which said oxygen transmitting film is elastic.
Claim 12
Dependent Claim
30 words
The bag as defined in claim 11 wherein said nonblocking film is selected from the group of flexible, thermoplastic polymer films consisting of ethylene vinyl acetate, polyethylene and polyvinyl chloride.
Claim 13
Dependent Claim
25 words
The bag as defined in claim 11 where said nonblocking film has a portion thereof extending beyond the open end of said oxygen transmitting film.
Claim 14
Dependent Claim
15 words
A bag as defined in claim 11 in which said nonblocking film is heat shrinkable.
Claim 15
Dependent Claim
24 words
A bag as defined in claim 15 in which said oxygen transmitting film is dimensionally stable under heat shrinking conditions for said nonblocking film.
Claim 16
Dependent Claim
17 words
A bag as defined in claim 11 where said oxygen transmitting film is a polyvinyl chloride polymer.
Claim 17
Dependent Claim
16 words
A bag as defined in claim 17 where said nonblocking film is a polyvinyl chloride polymer.
Claim 18
Dependent Claim
16 words
The bag as defined in claim 18 wherein said nonblocking film contains diatomaceous earth incorporated therein.
Claim 19
Independent Claim
152 words
A method for producing packages of red meat in plastic films including the steps of: a. supplying a first length of clear, transparent flexible plastic film selected from the group consisting of ethylene vinyl acetate and polyvinyl chloride characterized in that it is formulated to be non-fogging, to have a tendency to block itself and to provide an oxygen transmission at 32* F. of at least about 140 cc./100 sq. in./ 24 hrs./atm. in such packages; b. supplying a second length of flexible plastic film, said film being formulated so as to be nonblocking to said first length of plastic film; c. superimposing said first and second lengths of plastic film to each other at least marginally; d. inserting a red meat item between the superimposed lengths of plastic film; and e. forming seals between the first and second lengths of plastic film such that the red meat item is enveloped therebetween.
Claim 20
Dependent Claim
36 words
The method of claim 20 wherein the first and second lengths of plastic film are supplied from a common source, said first and second lengths of plastic film being readily separable into individual plies of film.
Claim 21
Dependent Claim
28 words
The method of claim 21 wherein, the longitudinal edge of one length of plastic film is joined to the longitudinal edge of the other length of plastic film.
Claim 22
Dependent Claim
29 words
The method of claim 22 wherein the thusly joined lengths of plastic film are joined together transversely at spaced apart intervals to define a plurality of consecutively connected pouches.
Claim 23
Dependent Claim
128 words
A packaged fresh red meat item packaged in a composite flexible plastic film bag, said composite plastic film bag comprising a first ply of plastic film that is substantially dimensionally stable to heat shrinkage selected from the group of ethylene vinyl acetate and polyvinyl chloride said film being formulated so as to have a tendency to block itself and so as to be characterized as clear, transparent, non-fogging and has a oxygen transmission at 32* F. of at least about 140 cc./100 sq. in./24 hrs./atm. and the second ply of plastic film formulated so as to be characterized as nonblocking to the first ply of plastic film, said first ply and second ply of plastic film being sealed together and completely enveloping the fresh meat item packaged therebetween.
Claim 24
Dependent Claim
41 words
The packaged fresh meat item as defined by claim 24 wherein said second plastic film ply of said composite plastic film bag is a flexible, thermoplastic polymeric film selected from the group consisting of ethylene vinyl acetate, polyethylene and polyvinyl chloride.
Claim 25
Dependent Claim
25 words
The packaged fresh red meat item as defined by claim 26 in which both of said film plies are composed of a polyvinyl chloride polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |