Four-film diagonal gusset seals for bags

Flexible bags – Wall details – Pleated or gusseted

Patent

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Details

383121, 383903, B65D 3020

Patent

active

052192202

ABSTRACT:
A gusseted thermoplastic bag has two four-film diagonal seals each extending from the gusset points to the edge of the bag. The diagonal seals extend at an angle of less than 45.degree. with respect to the bottom seal. Diagonal seals with an angle between 25.degree.-35.degree. are shown to be superior.

REFERENCES:
patent: 3143277 (1964-08-01), La Fleur
patent: 3326449 (1967-06-01), Dickson
patent: 3381886 (1968-05-01), Goglio
patent: 3660959 (1972-05-01), LaFleur
patent: 3857329 (1974-12-01), Lehmacher et al.
patent: 4491959 (1985-01-01), Loefberg
patent: 4554192 (1985-11-01), Benoit
patent: 4783178 (1988-11-01), Herder
patent: 4816104 (1989-03-01), Benoit
patent: 4913561 (1990-04-01), Beer

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