Multiwall bag

Package making – Methods – Plural covers

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Details

493210, 493933, B65B 1158

Patent

active

056449003

ABSTRACT:
A container apparatus and method of manufacture for same, in which the container includes an inner tube formed of plastics material, and an outer tube of one or more plies of material. The container is generally configured to lie flat, when in its unfilled condition. The container has a flat first end formed from flap members configured from one or more plies of the outer tube. The container is advantageously configured to enable opening of the first end of the outer tube to provide access to the inner tube.

REFERENCES:
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patent: 2255975 (1941-09-01), Hultkrans
patent: 2396565 (1946-12-01), Gardner
patent: 2582286 (1952-01-01), Schenck
patent: 2833094 (1958-05-01), Moore
patent: 2948457 (1960-08-01), Thiele
patent: 3306522 (1967-02-01), Konsel
patent: 3485438 (1969-12-01), McCall et al.
patent: 3599539 (1971-08-01), Coverstone
patent: 3807626 (1974-04-01), Goodrich
patent: 3929275 (1975-12-01), Bolling et al.
patent: 3958749 (1976-05-01), Goodrich
patent: 4260061 (1981-04-01), Jacobs
International Organization for Standardization, ISO 6590/1; "Packaging-Sacks-Vocabulary and types --Part 1: Paper sacks" (1983); pp. 6,8.
"Bag Making Adhesives", National Starch and Chemical Corporation, 1971.
Wiley Encyclopedia of Packaging Technology, 1986, pp. 14-16.
"AMV 2170" Brochure --before Feb. 1994.
"Paper Sacks-A User's Guide", Finch Partnership Limited, Liverpool, England 1973.
"The Combined Paper-Plastic Sack", Converter, Nov. 1973, pp. 14-16.

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