Envelopes – wrappers – and paperboard boxes – Wrapper – Bottle
Patent
1975-09-02
1976-05-25
Garbe, Stephen P.
Envelopes, wrappers, and paperboard boxes
Wrapper
Bottle
229 62, 229 66, B65D 3302
Patent
active
039587495
ABSTRACT:
The invention comprises a multiwall bag for the sift proof, leak proof and sanitary packaging of particulate and also of moisture containing materials, and also a package thereof, adapted for the subsequent uncontaminated withdrawal of the packaged product, the bag consisting essentially in combination of: a pair of inner and outer tubes of, respectively, heat sealable and non-heat sealable, flexible sheet materials; the outer tube consisting preferably of one or more contiguous plies bonded together at the opposite ends thereof, the bag in its assembled condition being open at one end and closed at the other end, the inner tube being heat sealed to closure adjacent the closed end and being lightly bonded thereat to the outer tube, and the outer tube being closed at the end beyond at least a portion of the heat sealed closure of the inner tube and by means for opening the same leaving the inner tube intact; the inner tube being lightly bonded to the outer tube at the open bag end and being peripherally perforated at spaced intervals below or within the bond; the open end of the bag being adapted for closure subsequent to filling, by heat sealing the inner tube to closure below the perforations and thence closing in both the tubes above the perforations, whereby upon subsequent opening of the outer tube at the closed bag end the inner tube may be manually withdrawn intact from the outer tube with its completely sealed in packaged contents by tensional severance thereof along the peripheral perforations.
REFERENCES:
patent: 2631630 (1953-03-01), Brady et al.
patent: 3038651 (1962-06-01), Cloudsley
patent: 3114643 (1963-12-01), Boston et al.
patent: 3386604 (1968-06-01), Fields
patent: 3485281 (1969-12-01), Wicks
patent: 3640381 (1972-02-01), Kaneda et al.
patent: 3807626 (1974-04-01), Goodrich
patent: 3910488 (1975-10-01), Goodrich
Garbe Stephen P.
St. Regis Paper Company
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