Aseptic container closure having a hinge and a mouthpiece
The invention relates to a container closure including a base portion, a pouring region having a peripheral wall that extends about a reference axis of the container closure, and a cap portion which is connected to the base portion by means of a hinge. The cap portion has a base, a peripheral outer wall which extends axially from the base to a peripheral lower edge of the cap portion, and an anchoring wall which extends outside the outer wall and at a radial distance from said outer wall, and which is connected to the lower edge of the cap portion by means of a bridge of the cap portion that extends radially outwards from the lower edge of the cap portion.
1 . A container closure comprising:
a base part,
a pouring area having a peripheral wall extending about a reference axis of the container closure and extending axially from the base part to a peripheral top edge of the pouring area surrounding a drinking opening,
a cap part connected to the base part by a hinge and rotatable back and forth between a closed position and an open position about a pivot axis extending perpendicular to the reference axis, wherein the cap part has a base and a peripheral outer wall surrounding an inner surface of the base and extending axially from the base to a circumferential lower edge of the cap part, wherein the peripheral outer wall and the base of the cap part together surround and cover the pouring area in the closed position,
wherein the cap part has an anchor wall which extends outside the peripheral outer wall at a radial distance from the peripheral outer wall and is rigidly connected to the lower edge of the cap part by a bridge of the cap part extending radially outwardly from the lower edge of the cap part, wherein, in the closed position, the anchor wall projects from the bridge in a direction opposite the base part and the hinge is connected to the anchor wall and extends from the anchor wall toward the base part, and
wherein a channel is formed by the anchor wall, the bridge and a surface of the peripheral outer wall opposite the bridge, wherein the channel extends in a circumferential direction between two channel ends and is open in a direction opposite the base part between the channel ends, as well as in the circumferential direction at the two channel ends.
2 . The container closure according to claim 1 , wherein the bridge has a flat contact surface which, in the closed position, faces a flat surface of the base part.
3 . The container closure claim 1 , wherein the cap part, in the open position, is located on a side opposite the pouring area of an orthoradial reference plane of the container closure which contains the pivot axis and extends parallel to the reference axis.
4 . The container closure according to claim 1 , wherein the hinge is a bistable snap hinge.
5 . The container closure according to claim 1 , wherein the hinge is connected to a ridge free standing in a recess of the anchor wall.
6 . The container closure according to claim 1 , wherein the hinge is connected to a ridge free standing in a recess of the base part.
7 . The container closure according to claim 1 , wherein the peripheral outer wall of the cap part has a circumferential sealing surface which, in the closed position, abuts a circumferential sealing surface of a connection area between the pouring area and the base part.
8 . The container closure according to claim 7 , wherein, in the closed position, a circumferential line of contact between the circumferential sealing surface of the cap part and the circumferential sealing surface of the connection area has a distance from a cross-sectional plane containing the pivot axis and extending perpendicular to the reference axis that is less than one-third of the distance of the top edge of the pouring area from the cross-sectional plane.
9 . The container closure according to claim 8 , wherein the circumferential line of contact has a diameter greater than the distance of the top edge of the pouring area from the cross-sectional plane.
10 . The container closure according to claim 8 , wherein the circumferential contact line has a distance to an orthoradial reference plane containing the pivot axis and extending parallel to the reference axis, which distance is greater than the distance of the circumferential contact line to the cross-sectional plane.
11 . The container closure according to claim 1 , wherein the cap part has an inner circumferential centering bead which, in the closed position, surrounds and contacts the top edge of the pouring area.
12 . The container closure according to claim 11 , wherein in the closed position the centering bead has a circumferential contact surface with the top edge of the pouring area.
13 . The container closure according to claim 1 , wherein the cap part has an inner sealing skirt which extends axially from the inner surface of the base of the cap part and, in the closed position, comes into contact with an inner annular fold of the peripheral wall of the pouring area and seals the drinking opening.
14 . The container closure according to claim 1 , wherein the cap part is integrally designed with the hinge and the base part.
15 . The container closure according to claim 1 , wherein the pouring area is integrally designed with the base part.
16 . The container closure according to claim 1 , wherein the pouring area is separate from the base part.
17 . The container closure according to claim 16 , wherein the base part has a base piece and an anchor ring that engages an annular notch of the base piece, wherein the anchor ring is integrally designed with the hinge and the cap part.
18 . The container closure according to claim 2 , wherein the flat contact surface of the bridge, in the closed position, comes into contact with the flat surface of the base part.
19 . The container closure according to claim 5 , wherein the ridge is flexible.
20 . The container closure according to claim 6 , wherein the ridge is flexible.