Fillable cap closure with a film seal that is opened purely by means of rotation or axial pressing

Abstract

The invention relates to a fillable twist cap closure for receiving and film-sealing a liquid or pourable filling in the interior of the closure and for emptying out the filling purely by rotating thetwist cap (1). The closure consist of a receiving part (3) which is screwed onto the threaded connection of a container and which comprises a cylinder (7) that is open at the bottom, said cylinder (7) being film-sealed at the bottom, and a cup (2) that can be introduced headfirst into the cylinder (7). All plastic parts (1-3) are made of a steam-absorbing polymer, and piercing and cutting teeth (5) which extend in the axial direction are molded on the lower edge of the cup (2). Guide means (9, 10, 28) on the outside of the cup (2) interact with guide means (8, 12) on the twist cap (1). When the twist cap (1) is rotated, an axial movement of the cup (2) is first produced in order to pierce the film (33) on the receiving part (3). Upon a further rotation, a purely horizontal rotation is then produced in order to cut open the film (33) along the film circumference by less than 360 degrees. Finally, the cup (2) is moved again axially downwards in order to fold open the cut film (33), whereby the contents of the cup fall downwards.

Description

technical field [0001] The invention relates to a refillable lid closure, sealed at the bottom with a membrane, wherein the contents are emptied into a container, with which the closure is provided, on the one hand by rotating the lid of the closure or by simply pressing the lid axially. Background technique [0002] Many beverages today are already produced by mixing concentrates with water. It would be more efficient if the bottling machine could just fill the water locally and add the concentrate to the bottle's water and then mix it only with the initial opening of the bottle by the consumer, rather than dispensing the finished mix. All types of sensitive active ingredients and light-sensitive vitamins can also be metered with the aid of such closures. [0003] A known solution for metering individual liquids is a plastic metering closure for containers and associated container necks, as pointed out in WO 2012 / 175317 A1. This is a refillable closure, including a button...

AI Technical Summary

Problems solved by technology

However, in practice, it has been found that even though this solution works in principle, it does not work correctly in every case (i.e. not in 100% of the cases)

Therefore, this solution is not well suited for practical implementation where tens of thousands of closures need to be delivered and each individual closure must function perfectly

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