Patent ID: 8557359

Claim:
A closure for a bottle for liquids, said bottle having a mouth, a rim, and a neck, said neck having an interior surface, said closure and said mouth having substantially the same shape, said closure being of such a size that it fits into the mouth of the bottle and is held snugly in the mouth of the bottle, said closure having a wall and a flange projecting from the wall of the closure, said closure having an exterior surface, said flange abutting said rim of said bottle, said closure comprising a molded polymeric material, said molded polymeric material comprising at least one ultra low-density ethylene copolymer, wherein said closure has at least one slit formed therein, said slit capable of allowing the access of an aspirating device to aspirate the contents of the bottle and removal of the aspirating device from the bottle a plurality of times, said closure capable of controlling evaporation at an average rate of no greater than about 2% of 7 to 7.5 mL deionized water loss over 30 days, assuming evenly distributed usage when exposed to 12° C., 12% relative humidity and 600 feet per minute air flow, wherein frictional force between said exterior surface of said closure and said interior surface of said neck is sufficient to prevent dislodgement of said closure from said bottle when said aspirating device is removed from said bottle.