Method of manufacturing parallelepipedic packing container provi

Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container

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Details

53451, 493239, 493930, 493934, B31B 3314

Patent

active

044641567

ABSTRACT:
A parallelepipedic packing container of the type which is provided with a sealing fin which extends over the upper end wall of the packing container as well as over triangular, double-walled lugs adjoining this end wall. The sealing fin comprises a narrow sealing zone on the outer edge of the fin and a tearing perforation on the base line of the fin, the tearing perforation extending from the tip of one triangular lug to a point on the end wall of the packing container. The sealing fin is unsealed in the area between the narrow sealing zone and the tearing perforation, and moreover a corresponding sealing fin arranged at the base of the packing container is appreciably narrower than the sealing fin wherein the tearing perforation is arranged.

REFERENCES:
patent: 2294220 (1942-08-01), Albertson
patent: 2385897 (1945-10-01), Waters
patent: 3232514 (1966-02-01), Swede et al.
patent: 3492775 (1970-02-01), Rhine et al.
patent: 4027455 (1977-06-01), Rausing et al.
patent: 4248351 (1981-02-01), Berg
patent: 4353196 (1982-10-01), Beer et al.

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