Food or edible material: processes – compositions – and products – Packaged or wrapped product – Three or more layered packaging materials
Patent
1991-10-21
1993-10-26
Robinson, Ellis P.
Food or edible material: processes, compositions, and products
Packaged or wrapped product
Three or more layered packaging materials
426105, 426129, 428 349, 428 351, 428516, 428518, 428520, B32B 2708, B65D 8572
Patent
active
052564282
ABSTRACT:
Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films are fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.
REFERENCES:
patent: 3424649 (1969-01-01), Nyberg et al.
patent: 3456044 (1969-07-01), Pahlke
patent: 3555604 (1971-01-01), Pahlke
patent: 3645992 (1972-02-01), Elston
patent: 4011382 (1977-03-01), Levine et al.
patent: 4076698 (1978-02-01), Anderson et al.
patent: 4188350 (1980-02-01), Vicik et al.
patent: 4196240 (1980-01-01), Lustig et al.
patent: 4198256 (1980-04-01), Andrews et al.
patent: 4207363 (1980-06-01), Lustig et al.
patent: 4212961 (1980-07-01), Kobayashi et al.
patent: 4277578 (1981-07-01), Yoshimura
patent: 4293673 (1981-10-01), Hamer et al.
patent: 4302566 (1981-11-01), Karol et al.
patent: 4322514 (1982-03-01), Miyoshi et al.
patent: 4329388 (1982-05-01), Vicik et al.
patent: 4330639 (1982-05-01), Matsuura et al.
patent: 4335224 (1982-06-01), Matsuura et al.
patent: 4349648 (1982-09-01), Jorgensen et al.
patent: 4354997 (1982-10-01), Mizutani et al.
patent: 4357376 (1982-11-01), Nattinger et al.
patent: 4399181 (1983-08-01), Yoshimura et al.
patent: 4404342 (1983-09-01), Miyoshi et al.
patent: 4405774 (1983-09-01), Miwa et al.
patent: 4415718 (1983-11-01), Miyoshi et al.
patent: 4424243 (1984-01-01), Nishimoto et al.
patent: 4429079 (1984-01-01), Shibata et al.
patent: 4438238 (1984-03-01), Fukushima et al.
patent: 4447480 (1984-05-01), Lustig et al.
patent: 4456646 (1984-06-01), Nishimoto et al.
patent: 4469752 (1984-09-01), Yoshimura et al.
patent: 4469753 (1984-09-01), Yoshimura et al.
patent: 4482687 (1984-11-01), Noshay et al.
patent: 4486579 (1984-12-01), Machon et al.
patent: 4495249 (1985-01-01), Ohya et al.
patent: 4505969 (1985-03-01), Weiner
patent: 4508842 (1985-04-01), Beran et al.
patent: 4542886 (1985-09-01), Yoshimura et al.
patent: 4551380 (1985-11-01), Schoenberg
patent: 4597920 (1986-07-01), Golike
patent: 4600616 (1986-07-01), Ohya et al.
patent: 4617241 (1986-10-01), Mueller
patent: 4623581 (1986-11-01), Hert
patent: 4640856 (1987-02-01), Ferguson et al.
patent: 4668575 (1987-05-01), Schinkel et al.
patent: 4668752 (1987-05-01), Tominari et al.
patent: 4701496 (1987-10-01), Yoshimura et al.
patent: 4832897 (1989-05-01), Van Der Molen
patent: 4835218 (1989-05-01), Yoshimura et al.
patent: 4894107 (1990-01-01), Tse et al.
patent: 4913977 (1990-04-01), Taka et al.
patent: 4988783 (1991-01-01), Beran et al.
"TAFMER.TM.. . . A New-Type Elastomer as Plastics Modifying Agent, Supplied in Pellet Form", 7 pgs. (Aug. 1975, Mitsui Petrochemical Industries, Ltd.).
"Introducing `Very Low Density PE`", Plastics Technology, p. 113 (Sep., 1984).
"Now It's Very Low-Density Polyethylene", Chemical Week, p. 66 (Sep., 1984).
"Can `VLDPE` Outperform Eva, Other Copolymers?", Modern Plastics, pp. 12, 14 (Oct., 1984).
"New Kind of Polyethylene Combines Flexibility, Toughness, Heat Resistance", Plastics Technology, pp. 13, 15 (Oct. 1984).
"UC Researchers Smash 0.915 PE Density Mark", Plastics World, pp. 8-9 (Oct., 1984).
"Ultralow Density PE's Are Tough, Flexible, Versatile", Plastics World, p. 86 (Oct., 1984).
Kurtz, S. J. "VLDPE: A Break-through In flexible Linear Polyethylene", ANTEC'85, Conference Proceedings for the Society of Plastic Engineers, Inc. 43rd Annual Technical Conference, pp. 463-466 (Apr. 29-May 2, 1985).
"VLDPE Plugs a Gap in PE's Density Spectrum", Plastics Engineering, pp. 59-62 (Sep., 1985).
Cady L. D. "Ultra Low-Density Polyethylene" Modern Plastics Encyclopedia, 1989, p. 66 (Oct., 1989).
"Something New in Polyethylene: Linear Low-Density PE", Plastics World, p. 86 (Dec., 1979).
"New Family of Resins Hits Market", The Journal of Commerce, p. 228 (Sep. 12, 1984).
"Union Carbide", Chemical Engineering, p. 42 (Oct. 1984).
"Polyethylene Producers Face Tough Times", European Chemical News, pp. 13-14 (Dec. 16, 1985).
"TAFMER `P` A New-Type Elastomer as Plastics Modifying Agent, Supplied in Pellet Form", pp. 1-6 (Aug., 1975) (Mitsui Petrochemical Industries, Ltd. brochure).
"TAFMER `A` A New Polyolefin Resin with Excellent & Flexibility", p. 10 (Jan., 1977) (Mitsui Petrochemical Industries, Ltd. brochure).
"Polyethylene, Linear Low-Density", Package Engineering, vol. 28, No. 4, pp. 76-78 (Mar., 1983) (Alternate title--The Packaging Encyclopedia, 1983).
J. P. Machon, "Actual and Potential Develoment of High Pressure Process for Linear Polyethylene", Golden Jubilee Conference Polyethylenes 1933-83 8-10 Jun. 1983 Royal Lancaster Hotel, London, pp. 82.5.1-82.5.8 (The Plastics and Rubber Institute).
K. G. Schurzky, "Design Parameters for LLDPE Film Resin Selection", 1984 Polymers, Laminations and Coatings Conference, Book 1, pp. 7-10 (Proceedings of the Technical Association of the Pulp and Paper Industry (Tappi).
Stamylex PE Linear Polyethylene for Cast Film Extrusion, 16 page document (DSM) (this document was obtained from the file history of U.S. Pat. No. 4,837,084. In the prosecution of the patent, the prosecuting attorney alledged a date of Feb., 1984 and the accuracy of this date had not been confirmed.
Resin Modifiers TAFMER, 20 pages (Mitsui Petrochemical Industries, Ltd. brochure) (Undated, Believed to have been received Dec. 1990).
Ethylene/Alpha-Olefin Copolymer TAFMER A/P, 11 pages (Mitsui Petrochemical Industries, Ltd. brochure) (Undated, Believed to have been received Dec. 1990).
L. I. Chriswell, "Modern Processes for the Manufacture of Polyethylene and Polypropylene", Chemical Engineering Progress, vol. 79, No. pp. 84-92 (Apr., 1983).
F. J. Karol, "The Polyethylene Revolution", CHEMTECH, pp. 222-228 (Apr., 1983).
B. K. Hunter et al., "The Preparation and Characterization of Homogeneous Copolymers of Ethylene and 1-Alkenes", Journal of Polymer Science: Polymer Chemistry Edition, vol. 22, pp. 1383-1392 (John Wiley & Sons, Inc., 1984).
R. Alamo et al., "Thermodynamic and Structural Properties of Copolymers of Ethylene," J. Phys. Chem., vol. 88, pp. 6587-6595 (American Chemical Society, 1984).
H. Shigemoto, "Easy Peelable Lid Material", Proceedings of Futur-Pak '91 Ninth International Ryder Conference on Food Packaging Innovations, pp. 293-316 (Oct. 2-4, 1991).
Lustig Stanley
Mack Nancy M.
Schuetz Jeffrey M.
Vicik Stephen J.
Dye Rena L.
Le Fever John C.
Robinson Ellis P.
Viskase Corporation
LandOfFree
Puncture resistant, heat-shrinkable films containing very low de does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Puncture resistant, heat-shrinkable films containing very low de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Puncture resistant, heat-shrinkable films containing very low de will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-957641