Recloseable profile strip with joining webs

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Patent

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Details

24400, 156 66, 15624418, 15624425, 2641771, A44B 1916, B29C 4700

Patent

active

054862558

ABSTRACT:
A recloseable profile strip designed to eliminate the slipping of the top web with respect to the bottom web in the recloseable profile strip of a recloseable package and remove the need for a tack seal. The present invention utilizes a joining web to join the top web and bottom web of the recloseable profile strip of a recloseable package. The recloseable profile strip is extruded through a die from molten material in a flat, single strip. In the double recloseable profile strip of the present invention, the first and second top webs each having an interlocking member flank the bottom web having two interlocking members. A thin, first joining web joins the the margin of the first top web to a first margin of the bottom web, and a thin, second joining web joins the margin of the second top web to the second margin of the bottom web. The single strip is then cooled. A machine positions the top webs above the bottom webs, and a "mater" interlocks the interlocking members of the top webs with the interlocking members of the bottom web. The strips of double recloseable profile strip can then be used with conventional form-fill-seal machinery to make the recloseable packages.

REFERENCES:
patent: 4896775 (1990-01-01), Boeckmann
patent: 4923309 (1990-05-01), Van Erden
patent: 4925316 (1990-05-01), Van Erden
patent: 4969309 (1990-11-01), Schwarz
patent: 5063069 (1991-11-01), Van Erden

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