Screw caps and containers with screw caps

Abstract

To provide a screw cap and a container with a screw cap that have a simple structure, allow for efficient water drainage, prevent cracking or deformation when attached to the container opening, and improve the printability of the tamper-evident band. [Solution] A screw cap 100 having a cap body 110 and a tamper-evident band 120, wherein the cap body 110 has a cap top surface 111, a skirt wall 114, and a cap-side screw portion 115, and the tamper-evident band 120 has a band body 121 and a weakened portion 122, wherein the inner circumferential surface of the band body 121 is provided with a locking projection 123, a groove portion 126 that forms a space for the flow path of cleaning water, and a flow path forming projection 124 adjacent to the groove portion 126 in the circumferential direction to expand the space and secure the flow path of cleaning water.

Claims

1. A screw cap having a cap body and a tamper-evident band connected to the lower part of the cap body, The cap body has a top surface, a skirt wall hanging down from the outer peripheral edge of the top surface, and a cap-side threaded portion formed on the inner peripheral surface of the skirt wall. The tamper-evident band comprises a cylindrical band body and a weakening portion that connects the upper end of the band body to the lower end of the skirt wall. The screw cap is characterized in that the inner circumferential surface of the band body is provided with a locking projection that can engage with the lower side of the container jaw, a groove that forms a space for a flow path of cleaning water between the outer surface of the container jaw and the inner circumferential surface of the skirt wall at a position above the locking projection, and a projection for forming a flow path that is adjacent to the groove in the circumferential direction and contacts the outer surface of the container jaw to expand the space and secure a flow path for cleaning water.

2. Multiple locking protrusions are arranged at intervals in the circumferential direction. The groove is formed in the circumferential space between adjacent locking protrusions, extending downward from a position above the upper end of the locking protrusion. The screw cap according to claim 1, characterized in that the channel-forming projection is formed to extend in the axial direction of the band body, and is provided on both sides of the groove in the circumferential direction of the band body when viewed in the axial direction of the band body.

3. An inclined surface is formed on the upper surface of the locking projection, with the inner diameter gradually decreasing from top to bottom as it connects. The upper end of the channel-forming projection is located above the inclined surface. The screw cap according to claim 1, characterized in that the radial projection height of the channel-forming protrusion is formed to be greater than or equal to the radial projection height of the inclined surface.

4. The aforementioned channel-forming projection is formed above the end of the locking projection, The screw cap according to claim 1, characterized in that a guide channel reaching the groove is formed at the connection portion between the lower end of the channel-forming projection and the end of the locking projection in the circumferential direction of the band body.

5. The aforementioned channel-forming projection has a protruding height of 0.05 mm or more and 1.0 mm or less, and a circumferential width of 0.3 mm or more and 7.0 mm or less. The screw cap according to claim 1, characterized in that the groove portion has a radial depth of 0.05 mm or more and 1.0 mm or less, and a circumferential width of 0.1 mm or more and 10 mm or less.

6. The screw cap according to claim 5, characterized in that the guide channel has a width of 0.05 mm or more and 10 mm or less.

7. A screw-capped container having a cylindrical opening and a main body connected to the lower part of the opening, wherein a screw cap according to any one of claims 1 to 6 is attached to the opening, The mouth portion has a container-side threaded portion formed on the outer circumferential surface of the mouth portion, and a container jaw portion that protrudes radially outward from below the container-side threaded portion of the mouth portion. A container with a screw cap, characterized in that the container-side threaded portion can be screw-engaged with the cap-side threaded portion.

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