Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1985-05-31
1986-12-30
Kittle, John E.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428124, 428200, 428211, 493224, 493439, B31B 116, B32B 304
Patent
active
046328548
ABSTRACT:
A web of packaging material made of heat sealable plastic sheeting has two parallel rows of cover portions sealed to the outer surface of the sheeting and arranged eccentrically to the longitudinal center of the web. The cover portions are made of a material which is stiffer than the plastic sheeting and which can be welded to it, preferably plastic coated cardboard or paper. Each cover portion is of approximately equal size and shape and are equally spaced longitudinally along the web. At least one row of cover portions is preferably sealed to the plastic sheeting by an inner cover strip at a surface eccentric to the geometric center of the cover portion and includes a ring pull to facilitate the opening of a subsequently formed package. In an alternate embodiment, only one row of cover portions is sealed to the outer surface of the web along the longitudinal center.
REFERENCES:
patent: 2259866 (1941-10-01), Stokes
patent: 2260064 (1941-10-01), Stokes
patent: 3744383 (1973-07-01), Finch et al.
patent: 4063641 (1977-12-01), Kuehn et al.
Kjaerbye Steffen
Madsen Finn T.
Ohlsson Ingemar
Kittle John E.
Seidleck James J.
Tetra Pak Developpement S.A.
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