Back to results
US 5,265,745 AGranted
Tamper evident top tab innerseal
AssigneeMinnesota Mining and Manufacturing Company
InventorsRodger J. Pereyra, Pierre H. LePere, Wayne K. Morris, Theresa A. McCarthy
Life of this patent
Estimating the term…
Abstract
A multilayer innerseal having a grip tab extending across the innerseal. Force applied to the grip tab is concentrated at the base of the grip tab and promotes a complete failure of the innerseal. In use, a substantial portion of the original innerseal remains adhered to the container to providing evidence of tampering and to frustrate efforts to reseal the container.
Claims5
An innerseal for application to the rim of a container, comprising:
- (a) a bottom bonding layer for bonding the innerseal to the container rim;
- (b) a base layer coupled to said bottom bonding layer;
- (c) a grip tab comprising a free portion for grasping by a user and a composite portion connected to said base layer, said free portion and said composite portion meeting at a junction defined by a chord across the container rim;
- and
- (d) means for tearing through said base layer at said junction and for progressively circumferentially delaminating the portion of said base layer connected to said composite portion from the rim in response to a removal force applied to said free portion;
- whereby an adherent innerseal portion remains bonded to the rim and a removable innerseal portion may be removed from the rim.
3 more elements
Dependencies are inferred from the claim text.