Method of making polyethylene shipping sack with flexographicall

Details Method of making polyethylene shipping sack with flexographicall Method of making polyethylene shipping sack with flexographicall

1981-04-07

1984-01-10

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493326, 493330, B31B 4904

Patent

active

044251084

ABSTRACT:
A polyethylene shipping bag having an internal nylon barrier coating which permits packaging of materials which normally migrate through polyethylene. The coating is flexographically applied from a nylon solution in a lower aliphatic alcohol with up to 15% water to a polyethylene film which has been previously treated to make it receptive to printing ink. The bag may be single ply or double ply and may have a filling valve.

REFERENCES:
patent: 3164068 (1965-01-01), Linacre et al.
patent: 3286005 (1966-11-01), Cook
patent: 3503859 (1970-03-01), Goncarovs et al.
patent: 3537225 (1970-11-01), Fields
patent: 4284672 (1981-08-01), Stillman
patent: 4284674 (1981-08-01), Sheptak
patent: 4370388 (1983-01-01), Mito et al.
"II. Methods of Printing Polyethlene", from Flexographic Printing, F.E. Boughton, 1958.

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