Symmetrical sack with double side folds

Details Symmetrical sack with double side folds Symmetrical sack with double side folds

1978-05-09

1979-11-20

Dixon, Jr., William R.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

93 8W, 93 19, 93 35R, 428 35, 428 36, B65D 3302, F15B 1522

Patent

active

041748042

ABSTRACT:
Lined plastics sacks are made from tube sections successively severed from a tubular web consisting of a tubular inner layer of thermoplastic film around which a circular fabric of stretched plastics tapes is woven to form an outer layer. In each severed tube section, the layers are interconnected by a seam at one end to define a sack. The outer layer may be formed with side pleats defining three outwardly directed folds, the inner layer being flattened and disposed in the central such fold before the sack is filled.

REFERENCES:
patent: 2418371 (1947-04-01), Smellie
patent: 3540356 (1970-11-01), Lecomte
patent: 3570749 (1971-03-01), Sato et al.
patent: 3929275 (1975-12-01), Bolling et al.

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