Oil-resistant closure system
AssigneeMinnesota Mining and Manufacturing Company
InventorsWilfred R. Brochman, Rodney R. Hannula, Bradley H. Jorgensen
Life of this patent
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Abstract
An easy opening closure system comprising a container end portion having an opening therein; an exterior tape which comprises a backing and a pressure-sensitive adhesive layer and is situated circumjacent the opening; and a protective tape which comprises a barrier layer that provides a barrier to essential oils contained in beverages and an oil-resistant thermoplastic adhesive layer, the protective tape being firmly bonded to the bottom surface of the container end portion circumjacent the opening by means of the thermoplastic adhesive layer and to the exterior tape in the area of the opening by means of the pressure-sensitive adhesive layer and the thermoplastic adhesive layer.
Claims12
An easy opening closure system comprising a container end portion having an opening therein, said closure system further comprising:
- (a) an exterior tape comprising a backing and a pressure sensitive adhesive layer, said exterior tape being situated circumjacent said opening and being firmly adhered to the top surface of said container end portion circumjacent said opening by means of said pressure-sensitive adhesive layer;
- and
- (b) a protective tape comprising a barrier layer and an oil-resistant thermoplastic adhesive layer firmly bonded to said barrier layer, said protective tape being firmly bonded to the bottom surface of said container end portion circumjacent said opening by means of said thermoplastic adhesive layer, and further being firmly bonded to said exterior tape in the area of said opening by means of said pressure-sensitive adhesive layer and said thermoplastic adhesive layer.
An easy opening closure system comprising a container end portion having an opening therein, said closure system further comprising:
- (a) an exterior tape comprising a backing and a pressure-sensitive adhesive layer, said exterior tape being situated circumjacent said opening and being firmly adhered to the top surface of said container end portion circumjacent said opening by means of said pressure-sensitive adhesive layer;
- and
- (b) a protective tape comprising a barrier layer, a frangible film, and an oil-resistant thermoplastic adhesive layer, said barrier layer being situated between said frangible film and said thermoplastic adhesive layer, said protective tape being firmly bonded to the bottom surface of said container end portion circumjacent said opening by means of said thermoplastic adhesive layer, and further being firmly bonded to said exterior tape in the area of said opening by means of said pressure-sensitive adhesive layer and said thermoplastic adhesive layer.
An easy opening closure system comprising a container end portion having an opening therein, said closure system further comprising:
- (a) an exterior tape comprising a backing and a pressure-sensitive adhesive layer, said exterior tape being situated circumjacent said opening and being firmly adhered to the top surface of said container end portion circumjacent said opening by means of said pressure-sensitive adhesive layer;
- and
- (b) a protective tape comprising a barrier layer, a frangible film, and an oil-resistant thermoplastic adhesive layer, said frangible film being situated between said barrier layer and said thermoplastic adhesive layer, said barrier layer being situated between said frangible film and said thermoplastic adhesive layer, said protective tape being firmly bonded to the bottom surface of said container end portion circumjacent said opening by means of said thermoplastic adhesive layer, and further being firmly bonded to said exterior tape in the area of said opening by means of said pressure-sensitive adhesive layer and said thermoplastic adhesive layer.
Dependencies are inferred from the claim text.