Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1985-12-11
1987-10-06
Schmidt, Frederick R.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 99, 493231, 493350, 493927, 383 63, B31B 2318, B31B 2384
Patent
active
046982744
ABSTRACT:
Plastic tubular film structure for forming multiple bags. The tubular film structure has a first pair of rib elements, a second pair of diametrically opposed rib elements, a first pair of groove elements between said pairs of rib elements and a second pair of groove elements diametrically opposed to the first pair, with the elements in the pairs being closely spaced and being on the inner surface of the tube. Each of the pairs of rib elements are aligned with each adjacent pair of groove elements as the tubing is flattened to form first and second sets of the aligned pairs of rib and groove elements, so that by forming a continuous slit between the elements of one layer at one set and the elements of the other layer at the other set, and with the tube being subsequently folded so that an element adjacent the slit of the first set is folded onto the second set, and an element adjacent the slit of the second set is folded onto the first set, two continuous strips of double interlocking profile film are formed.
REFERENCES:
patent: Re29331 (1981-02-01), Naito
patent: 2039887 (1936-05-01), Colletti
patent: 3500727 (1970-03-01), Behr et al.
patent: 3503112 (1970-03-01), Siegel
patent: 3532571 (1970-11-01), Ausnit
patent: 3679511 (1972-07-01), Ausnit
patent: 3802919 (1974-04-01), Saffir
patent: 3945403 (1976-03-01), Noguchi
patent: 3948705 (1976-04-01), Ausnit
patent: 4046408 (1977-09-01), Ausnit
patent: 4249982 (1981-09-01), Ausnit
patent: 4262581 (1981-04-01), Ferrell
patent: 4263079 (1981-04-01), Sutrina et al.
patent: 4290467 (1981-09-01), Schmidt
patent: 4341575 (1982-07-01), Herz
patent: 4372793 (1983-02-01), Herz
patent: 4540537 (1985-09-01), Kamp
Ausnit Steven
Van Erden Donald L.
Minigrip Inc.
Schmidt Frederick R.
Terrell William E.
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