Multiple layer packaging sheet material

Stock material or miscellaneous articles – Hollow or container type article – Nonself-supporting tubular film or bag

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Details

428366, 428483, 428367, 428522, B29D 2700

Patent

active

048942669

ABSTRACT:
A multiple layer sheet material comprising a first layer 12 of vinylidene chloride copolymer having a first softening temperature. A second polymeric sealant layer 14 has a second softening temperature no more than about 50.degree. C. less than the first softening temperature. An optional third layer 16 between the first and second layers has a third softening temperature greater than either of the first and second softening temperatures and comprises a polyethylene terephthalate composition. A fourth polymeric layer 18 has a fourth softening temperature greater than the first and second softening temperatures. The first layer is positioned between the third and fourth layers. A fifth impact layer 20 is positioned between layers 14 and 16. The composition of the impact layer 20 comprises, as a first component, a base polymer drawn from the same family of polymers as a major polymeric component of the second sealant layer, and, as a second component, a polymeric composition providing elastomeric properties to the impact layer and increased shock tolerance to the multiple layer sheet material. The disclosure also teaches the use of the sheet materials in fabrication of packages and teaches methods of fabricating both the sheet materials and the packages.

REFERENCES:
patent: 2762720 (1956-09-01), Michel et al.
patent: 2993876 (1961-07-01), McGlamery
patent: 3192288 (1965-06-01), Sayko et al.
patent: 3358053 (0000-01-01), None
patent: 3455720 (1969-07-01), Davies et al.
patent: 3597237 (1971-08-01), Nughes
patent: 3600208 (1971-08-01), Abbott et al.
patent: 3962018 (1976-06-01), Costemalle et al.
patent: 4122181 (1978-09-01), Baird et al.
patent: 4294889 (1981-10-01), Hashimoto
patent: 4311742 (1982-01-01), Otsuka
patent: 4424253 (1984-01-01), Anderson
patent: 4438850 (1984-03-01), Kahn
patent: 4448792 (1984-05-01), Schirmer
patent: 4472227 (1984-09-01), Toyoda
patent: 4487871 (1984-12-01), Ishibashi
patent: 4505951 (1985-03-01), Kennedy
patent: 4515836 (1985-05-01), Cobb et al.
patent: 4528220 (1985-07-01), Hwo
patent: 4578316 (1986-03-01), Clauson
patent: 4626456 (1986-12-01), Farrell
patent: 4654240 (1987-03-01), Johnston
patent: 4689099 (1987-08-01), Ito et al.
patent: 4734459 (1988-03-01), Cecchin et al.
patent: 4769261 (1988-09-01), Hazelton et al.
Converting Magazine, Oct. 1987, pp. 40, 41, 42 and 44 "All-Plastic Pouch: Retortable & Microwaveable".
Food Processing Magazine p. 105 Jul. 1986.
Plastics World Magazine, Feb. 1987 p. 51.
Nippon Chemtec Consulting Report, received Apr. 1986.

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