Zipper closure with internal peel seal

Details Zipper closure with internal peel seal Zipper closure with internal peel seal

1989-03-23

1990-08-14

Brittain, James R.

Buckles, buttons, clasps, etc.

Having adhesive fastener

24305R, 24587, 156 66, 206632, 383 63, B65D 7710

Patent

active

049475258

ABSTRACT:
A flexible continuous reclosable plastic zipper having one strip with a groove and another strip with a rib for interlocking insertion therein, a hot melt plastic peel seal in the base of the groove with the rib bonded to the peel seal material to initially join the rib and groove and with the rib and groove breaking apart away from the bonding material at the first opening and thereafter releasably interlocking in a normal manner with the peel seal material remaining within the groove. The groove is made sufficiently deep so that with initial interlocking, the rib must penetrate to the base of the groove deeper than normal operation to lock to the peel seal. When broken from the peel seal, the rib inserts sufficiently for the jaws of the groove to snap over the rib and then locks without interference from the peel seal which is relatively rigid and nonadhesive after the rib is first broken away.

REFERENCES:
patent: 3176364 (1965-04-01), Dritz
patent: 3339606 (1967-09-01), Kugler
patent: 4354541 (1982-10-01), Tilman
patent: 4786190 (1988-11-01), Van Erden et al.
patent: 4791710 (1988-12-01), Nocek et al.
patent: 4792240 (1988-12-01), Ausnit

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