Patent ID: 8887905

Claim:
A plastic closure comprising: (a) an integrated capsule for dispensing solid, granulated or liquid active ingredients, wherein the integrated capsule comprises: (i) a cylindrical or conical pressure-resistant capsule wall with a chamber closable at its lower end by means of a sealing film; (ii) a convex, flexible membrane formed on an upper end of the capsule wall in one piece therewith; (iii) a coupling attachment formed as a tube portion centrally on a lower face of the convex flexible membrane; and (iv) a replaceable piercing member comprising a coupling attachment receptacle that removably engages the coupling attachment whereby the replaceable piercing member can be removed from the coupling attachment and thereby from the convex flexible membrane; and (b) a shell wall comprising, a fastening member which is connected to the capsule wall via a ring-shaped covering surface, wherein the shell wall concentrically encircles the capsule wall, and wherein the replaceable piercing member, prior to operation of the convex flexible membrane, rests completely inside the chamber.