A tamper-evident cap (2) for engagement to a container closure plug (100), the cap including a panel (10) having a container closure plug-facing side and a preweakened region defining a tear strip (17), the tear strip having a tear strip pin (30) extending from the closure plug-facing side and configured for receipt by the container closure plug, a sidewall (12) extending from the closure plug-facing side, and a center post (20) extending axially from a central region of the panel, wherein the center post is configured to engage the container closure plug, the center post having a post preweakened region.

A tamper-evident cap (2) for engagement to a container closure plug (100), the cap including a panel (10) having a container closure plug-facing side and a preweakened region defining a tear strip (17), the tear strip having a tear strip pin (30) extending from the closure plug-facing side and configured for receipt by the container closure plug, a sidewall (12) extending from the closure plug-facing side, and a center post (20) extending axially from a central region of the panel, wherein the center post is configured to engage the container closure plug, the center post having a post preweakened region.

A container closure system comprises a container 100 comprising a neck 120 having an outer surface, the neck including a plurality of snap ring segments 140 alternating with a plurality of snap ring voids 160 positioned around a circumference of the outer surface. The length of the circumference at which snap ring voids exist is 25% or more of the total length of the circumference. The plurality of snap ring segments is positioned at regular increments around a circumference of the outer surface. The system further includes a cap 14 comprising, among other things, a base 26 that comprises a plurality of snap prongs 16 arranged so as to engage and disengage the plurality of snap ring segments when the cap is rotated on the neck of the container. The plurality of snap prongs are configured to hold the cap on or release the cap from the container.

A container closure system comprises a container 100 comprising a neck 120 having an outer surface, the neck including a plurality of snap ring segments 140 alternating with a plurality of snap ring voids 160 positioned around a circumference of the outer surface. The length of the circumference at which snap ring voids exist is 25% or more of the total length of the circumference. The plurality of snap ring segments is positioned at regular increments around a circumference of the outer surface. The system further includes a cap 14 comprising, among other things, a base 26 that comprises a plurality of snap prongs 16 arranged so as to engage and disengage the plurality of snap ring segments when the cap is rotated on the neck of the container. The plurality of snap prongs are configured to hold the cap on or release the cap from the container.

A packaging container has an improved degree of freedom in the shapes of a container body and a cap, and prevents required turning force from being excessively large. The packaging container includes a container body having an upward-facing mouth, and a cap for closing the mouth. The container body has a plurality of axial drive ribs and a circumferential locking groove formed on an outer perimeter of the mouth. The cap has protruding rib portions on an inner surface side and locking claws to elastically lock into the locking groove, extended down from a top surface thereof.

A packaging container has an improved degree of freedom in the shapes of a container body and a cap, and prevents required turning force from being excessively large. The packaging container includes a container body having an upward-facing mouth, and a cap for closing the mouth. The container body has a plurality of axial drive ribs and a circumferential locking groove formed on an outer perimeter of the mouth. The cap has protruding rib portions on an inner surface side and locking claws to elastically lock into the locking groove, extended down from a top surface thereof.

In one example, a cap includes a body that has a plug defined by a recess extending downward from an upper surface of the body. The body also includes a skirt disposed circumferentially about the plug such that a gap is defined between an exterior surface of the plug and an inner surface of the skirt. Two or more tongues are connected to the skirt and extend radially inward toward the plug, each of the tongues configured to releasably engage respective corresponding structure of a container. A seal is provided that is disposed about an outer surface of the plug so as to be concentric with the plug, the seal including multiple radially extending circumferential fins.

In one example, a cap includes a body that has a plug defined by a recess extending downward from an upper surface of the body. The body also includes a skirt disposed circumferentially about the plug such that a gap is defined between an exterior surface of the plug and an inner surface of the skirt. Two or more tongues are connected to the skirt and extend radially inward toward the plug, each of the tongues configured to releasably engage respective corresponding structure of a container. A seal is provided that is disposed about an outer surface of the plug so as to be concentric with the plug, the seal including multiple radially extending circumferential fins.

A metal container body 1 comprises a base and a generally cylindrical side wall 3. The top edge of the cylindrical side wall is rolled over to form a hollow annular bead 5 surrounding the upper open end of the container body and a notch 6 is formed at a circumferential point in the annular bead. The container body is for use with a releasable closure 2 formed with an end wall 7 and a depending skirt 8 and having an annular layer of sealing material 9 provided on the inside of the end wall adjacent the skirt. When the closure is pressed onto the container body, the annular bead engages the annular layer of sealing material and some of that material extends into the notch 6. The closure is held on the container only by the partial vacuum formed therein during processing of a food product in the container. After processing, the user opens the container by rotating the closure. Sealing material in the notch forces the closure to lift off from the container to break the seal and release the closure.

A metal container body 1 comprises a base and a generally cylindrical side wall 3. The top edge of the cylindrical side wall is rolled over to form a hollow annular bead 5 surrounding the upper open end of the container body and a notch 6 is formed at a circumferential point in the annular bead. The container body is for use with a releasable closure 2 formed with an end wall 7 and a depending skirt 8 and having an annular layer of sealing material 9 provided on the inside of the end wall adjacent the skirt. When the closure is pressed onto the container body, the annular bead engages the annular layer of sealing material and some of that material extends into the notch 6. The closure is held on the container only by the partial vacuum formed therein during processing of a food product in the container. After processing, the user opens the container by rotating the closure. Sealing material in the notch forces the closure to lift off from the container to break the seal and release the closure.