Reclosable shipping sack

Details Reclosable shipping sack Reclosable shipping sack

1990-12-31

1991-07-30

Garbe, Stephen P.

Flexible bags

With closure

Independent closures for single access opening

383 63, 383 79, 383 81, B65D 3326, B65D 3324

Patent

active

050355171

ABSTRACT:
A reclosable sack having a mouth from which contents may be discharged, including a primary non-reclosable stitched fastener across and closing the mouth. The stitched fastener includes a removable chain stitch and tear strip for facilitating manual opening of the primary fastener. The reclosable sack also includes a secondary reclosable fastener having a pair of interlocking profile strips that are attached at lower inner wall portions to the upper edge of the sack walls outboard of the stitched fastener. The secondary profile fastener is heat sealed at its ends and allows the sack to be reclosed once the primary non-reclosable fastener has been removed.

REFERENCES:
patent: 2978164 (1961-04-01), Williams et al.
patent: 3181583 (1965-05-01), Lingenfelter
patent: 3228585 (1966-01-01), Fleming
patent: 4241865 (1980-12-01), Ferrell
patent: 4252238 (1981-02-01), Spiegelberg et al.
patent: 4337889 (1982-07-01), Moertel
patent: 4589145 (1986-05-01), Van Erden et al.
patent: 4620320 (1986-10-01), Sullivan
patent: 4637063 (1987-01-01), Sullivan et al.
patent: 4691370 (1987-09-01), MacFee
patent: 4782951 (1988-11-01), Griesbach et al.
patent: 4824261 (1989-04-01), Provost
patent: 4848928 (1989-07-01), Ausnit

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