Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1982-08-06
1983-10-04
Van Balen, William J.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
206484, 2064842, 2065242, 426113, 426127, 4284755, 4284758, 4284761, 428516, B65D 8572, B65D 6540, B65D 8118, B32B 2708
Patent
active
044078730
ABSTRACT:
Retortable packaging is made entirely with polymeric materials. The improved heat sealable structure has an inner heat seal layer of linear low density polyethylene. The second or adjacent layer is linear low density polyethylene with an optional 0% to 80% medium density polyethylene blended into it. A third layer is anhydride modified medium density polyethylene. Fourth, fifth and sixth layers respectively are nylon, ethylene vinyl alcohol and nylon. An optional layer between the second and third layers is at least 20% linear low density polyethylene and up to 80% medium density polyethylene. The entire multiple layer structure is firmly adhered together so that the layers mutually support each other in the unitary package.
REFERENCES:
patent: 4275119 (1981-06-01), Weiner
patent: 4276330 (1981-06-01), Stanley et al.
patent: 4303710 (1981-12-01), Bullard et al.
patent: 4308084 (1981-12-01), Ohtusuki et al.
patent: 4355721 (1982-10-01), Knott et al.
patent: 4356221 (1982-10-01), Anthony et al.
patent: 4357376 (1982-11-01), Nattinger et al.
patent: 4360551 (1982-11-01), Guarino et al.
patent: 4364981 (1982-12-01), Horner et al.
Christensen Ronald C.
Genske Roger P.
Kester Dennis E.
Ossian William F.
American Can Company
Bowie Stuart S.
Van Balen William J.
Wilhelm Thomas D.
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