Bottle closure with breakaway skirt for non-refillable bottles

A closure for an open neck bottle used as a refill in a dispenser, said closure comprising:

• a) a top deck having a periphery and a surface contour together defining an overall shape to the closure, the top deck comprising at least one functional element configured for engagement with a complementary means inside a dispenser;
• b) an orifice passing through a relatively central location on said top deck;
• c) an outer circumferential skirt extending substantially perpendicular from the periphery of said top deck portion;
• d) an inner annular collar extending underneath and perpendicular to said top deck, said collar relatively concentric to said outer circumferential skirt, said inner annular collar surrounding said dispensing orifice and configured with internal sealing means for sealing engagement with complementary features on a neck of a bottle;
• and
• e) a frangible demarcation configured on said closure, separating said closure into at least first and second portions without intersecting said inner annular collar, the first portion including the internal sealing means and the dispensing orifice, and the second portion including at least part of the top deck, whereby breaking the closure along the frangible demarcation separates the first and second portions.