Sift proof and tamper evident pouring spout

Details Sift proof and tamper evident pouring spout Sift proof and tamper evident pouring spout

1994-05-23

1995-08-29

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Having means to facilitate opening the box by severing box...

229207, 229219, B65D 574

Patent

active

054453160

ABSTRACT:
A substantially sift proof pouring spout is provided by cooperating interior and exterior pouring spout components formed by partial throughcuts, edges or lines of perforations. The exterior spout component is split to form an automatic supplemental side wing, includes an integral inward travel stop tab, and is releasably connected to a tamper evidence tab. The invention encompasses a single-piece flat blank for forming the spout and a carton with which it is integrated. The inward travel stop tab and tamper evidence tab are defined at least in part by the partial cuts and resultant delamination areas.

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