Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1977-10-26
1981-06-30
Hess, Bruce H.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
206484, 2065242, 428332, 428515, 428516, B32B 2708, B65D 6440
Patent
active
042763304
ABSTRACT:
Sideweld bags having strong sidewelds can be made from a trilaminate film comprising a core layer of an ethylene-propylene block copolymer sandwiched between skin layers of polypropylene or an ethylene-propylene random copolymer.
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patent: 3649579 (1972-03-01), Gobran et al.
patent: 3671383 (1972-06-01), Sakata et al.
patent: 3817821 (1974-06-01), Gallini
patent: 3993826 (1976-11-01), Butler et al.
patent: 4004075 (1977-01-01), Richmond et al.
patent: 4022646 (1977-05-01), Casey
Stanley Hugh E.
Tokos George M.
Crown Zellerbach Corporation
Hess Bruce H.
Teigland Stanley M.
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