Screw cap, container body and container
View Patent ↗The invention relates to a screw cap ( 10 ) capable of being screwed onto the neck ( 44 ) of a container body ( 40 ), the screw cap comprising a substantially cylindrical screw section ( 17 ) comprising a screw thread ( 16 ) on its inner face, at least one tamper evidence member ( 18 ) for indicating an initial opening of the screw cap ( 10 ), and a desiccant chamber ( 24 ) located radially inwardly to the screw section, wherein the screw section ( 17 ) is radially resilient.
1. A container comprising a screw cap, screwed onto a neck of a container body, wherein the screw cap comprises
a substantially cylindrical screw section comprising a screw thread on its inner face;
at least one tamper evidence member for indicating an initial opening of the screw cap; and
a desiccant chamber located radially inwardly to the screw section;
wherein the screw section is radially resilient, and
wherein the screw cap further comprises at least one childproof locking member including a first locking section, wherein a tamper evidence member comprises at least one second locking section, and the first locking section and the second locking section are angularly separated from one another.
2. The container of claim 1 , wherein the screw section of the screw cap is dimensioned to achieve the radial resiliency.
3. The container of claim 1 , where the screw cap further comprises a peripheral wall, wherein the screw section is situated on a screw skirt radially outwardly of the desiccant chamber and radially inwardly of the peripheral wall of the screw cap.
4. The container of claim 3 , wherein the screw skirt of the screw cap is dimensioned to be radially resilient.
5. The container of claim 1 , wherein the screw thread of the screw cap is provided by at least two distinct thread sections located in the screw section.
6. The container of claim 1 , wherein a cross-section of the thread of the screw cap on the screw section is such that it supports forcible ejection.
7. The container of claim 1 , wherein the childproof locking member comprises at least two first locking protrusions which are substantially diametrically arranged.
8. The container of claim 1 , wherein the first and second locking sections are arranged at an angular separation of about 15° to about 155°.
9. The container of claim 1 , wherein (d 2 )>(d 1 ) of the screw cap, wherein (d 2 ) is an axial length of the desiccant chamber and (d 1 ) is an axial distance between an outmost thread portion and a circular front wall section of the cap.
10. The container of claim 1 , wherein the screw cap further comprises a sealing skirt situated radially inwardly from the screw section and radially outwardly from the desiccant chamber, which sealing skirt has a non-cylindrical shape.
11. The container of claim 10 , wherein the screw cap further comprises at least one spacer situated between the screw section and the sealing skirt.
12. The container of claim 1 , wherein the container body further comprises at least two first protrusions and at least one second protrusion on an external surface of its neck, wherein the first protrusions is capable of interacting with a first locking section and the second protrusion is capable of interacting with a second locking section of the screw cap, and
wherein the protrusions are arranged at an angular separation with respect to one another, such that the angular separation of the protrusions substantially corresponds to the angular separation of the first and second locking sections of the screw cap.
13. A method of fabricating the screw cap of the container as described in claim 1 , comprising the steps of
injecting a material into a mould comprising an undercut in the form of a thread,
opening the mould to expose an outside of the screw cap,
linearly retracting at least one portion of the mould from an inside of the screw cap in order to expose at least one side of an undercut portion of the screw cap to allow for a radial deviation, and
forcibly ejecting the screw cap from a core portion of the mould, thereby resiliently expanding an undercut section.
14. The method of claim 13 , wherein at least a first portion and a second portion of the mould are linearly retracted from the inside.
15. The method of claim 13 , wherein the cap is guided during the forcible ejection on a central pin in an area of a desiccant chamber of the cap.
16. A container comprising a screw cap, screwed onto a neck of a container body, wherein the screw cap comprises
a substantially cylindrical screw section comprising a screw thread on its inner face;
at least one tamper evidence member for indicating an initial opening of the screw cap; and
a desiccant chamber located radially inwardly to the screw section;
wherein the screw section is radially resilient;
wherein the screw cap further comprises a peripheral wall, wherein the screw section is situated on a screw skirt radially outwardly of the desiccant chamber and radially inwardly of the peripheral wall of the screw cap, and
wherein the screw skirt of the screw cap comprises at least two distinct skirt sections.
17. The container of claim 16 , wherein (d 2 )>(d 1 ) of the screw cap, wherein (d 2 ) is an axial length of the desiccant chamber and (d 1 ) is an axial distance between an outmost thread portion and a circular front wall section of the cap.
18. The container of claim 16 , wherein the screw cap further comprises a sealing skirt situated radially inwardly from the screw section and radially outwardly from the desiccant chamber, which sealing skirt has a non-cylindrical shape.
19. The container of claim 16 , wherein the screw cap further comprises at least one childproof locking member including a first locking section, wherein a tamper evidence member comprises at least one second locking section, and the first locking section and the second locking section are angularly separated from one another.
20. The container of claim 16 , wherein the screw skirt of the screw cap is dimensioned to be radially resilient.