Closure device providing visual confirmation of occlusion

Details Closure device providing visual confirmation of occlusion Closure device providing visual confirmation of occlusion

2009-04-28

2011-12-13

Pascua, Jes F (Department: 3782)

Flexible bags

With closure

Rib and groove

C024S399000, C024S400000

Reexamination Certificate

active

08075186

ABSTRACT:
A closure device providing a visual confirmation of occlusion. The closure device includes a first and a second interlocking fastening strips which are arranged to be interlocked over a predetermined length, at least one of the fastening strips having a surface alteration providing visual confirmation of occlusion of the closure device. The surface alteration may be a slit which opens or closes upon occlusion of said closure device. In one embodiment, the surface alteration may extend into a coextruded portion. The color of the coextruded portion is exposed when the surface alteration is open and hidden when the surface alteration is substantially closed.

REFERENCES:
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patent: 5356222 (1994-10-01), Kettner et al.
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patent: 7452131 (2008-11-01), Kettner et al.
patent: 7543361 (2009-06-01), Borchardt et al.
patent: 7611284 (2009-11-01), Borchardt et al.

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