Abstract

A tamper evident lid is secured to a retention ring. The retention ring has an inner face sized to have an interference fit with an outer wall of a container. Also taught are methods of securing the lid, for example, placing the retention ring below the lid and around the container; lifting the retention ring to a point near the top of the container, so that there is an interference fit between the retention ring and the container; and pushing the lid down on the container to affix the lid to the retention ring.

IPC Classes  ?

• B65D 43/02 - Removable lids or covers
• B65D 17/40 - Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness extending circumferentially of the container mouth
• B65D 43/10 - Removable lids or covers having a peripheral flange fitting over the rim of the container and retained by snapping over beads or projections

Abstract

A tamper resistant, push-on closure member for a container. The closure has a top cylindrical band portion, a bottom cylindrical band portion and a top cover. The top band has a plurality of continuous annular ridges extending inwardly along the circumference of its inner surface for contacting the side surface of the container. The bottom band has plurality of rigid teeth extending from a lower peripheral margin of the bottom band in an upward and inward direction for locking engagement against the lip of the container. The plurality of teeth are connected to a lower peripheral margin of the top band by a plurality of projections for providing a visual tamper evident indication. A plurality of tooth channels positioned between the lower margin of the top band and the upper margin of the bottom band for facilitating the flow of plastic resin during the production of the plurality of teeth.

IPC Classes  ?

• B65D 55/02 - Locking devicesMeans for discouraging or indicating unauthorised opening or removal of closure

Abstract

A tamper resistant, push-on closure member for a container. The closure has a top cylindrical band portion, a bottom cylindrical band portion and a top cover. The top band has a plurality of continuous annular ridges extending inwardly along the circumference of its inner surface for contacting the side surface of the container. The bottom band has plurality of rigid teeth extending from a lower peripheral margin of the bottom band in an upward and inward direction for locking engagement against the lip of the container. The plurality of teeth are connected to a lower peripheral margin of the top band by a plurality of projections for providing a visual tamper evident indication. A plurality of tooth channels positioned between the lower margin of the top band and the upper margin of the bottom band for facilitating the flow of plastic resin during the production of the plurality of teeth.

IPC Classes  ?

• B65D 55/02 - Locking devicesMeans for discouraging or indicating unauthorised opening or removal of closure

Abstract

A one piece molded tamper evident push-on closure suitable for closing an opening of a bottle, and method for manufacture thereof. The closure includes a cap portion, a latch ring portion and a frangible connector connecting the cap portion and the latch ring portion. The closure includes a plurality of resiliently deformable teeth extending inwardly from the latch ring portion and towards the cap portion for engaging the latch ring portion onto the neck of the bottle. The closure includes a manually engageable tab projecting from the latch ring portion to permit application of a manual force to rupture the frangible connector and permit the cap portion to be at least partially disconnected from the latch ring portion.

IPC Classes  ?

• B65D 41/48 - Snap-on caps or cap-like covers non-metallic, e.g. made of paper or plastics
• B29C 45/40 - Removing or ejecting moulded articles
• B29C 45/44 - Removing or ejecting moulded articles for undercut articles
• B29L 31/56 - Stoppers or lids for bottles, jars, or the like
• B29C 45/26 - Moulds

Abstract

A one piece molded tamper evident push-on closure suitable for closing an opening of a bottle, and method for manufacture thereof. The closure includes a cap portion, a latch ring portion and a frangible connector connecting the cap portion and the latch ring portion. The closure includes a plurality of resiliently deformable teeth extending inwardly from the latch ring portion and towards the cap portion for engaging the latch ring portion onto the neck of the bottle. The closure includes a manually engageable tab projecting from the latch ring portion to permit application of a manual force to rupture the frangible connector and permit the cap portion to be at least partially disconnected from the latch ring portion.

IPC Classes  ?

• B65D 55/02 - Locking devicesMeans for discouraging or indicating unauthorised opening or removal of closure

Abstract

A one piece molded tamper evident push-on closure suitable for closing an opening of a bottle, and method for manufacture thereof. The closure includes a cap portion, a latch ring portion and a frangible connector connecting the cap portion and the latch ring portion. The closure includes a plurality of resiliently deformable teeth extending inwardly from the latch ring portion and towards the cap portion for engaging the latch ring portion onto the neck of the bottle. The closure includes a manually engageable tab projecting from the latch ring portion to permit application of a manual force to rupture the frangible connector and permit the cap portion to be at least partially disconnected from the latch ring portion.

IPC Classes  ?

• B65D 55/02 - Locking devicesMeans for discouraging or indicating unauthorised opening or removal of closure

Abstract

Conventional adhesive and contact welding methods for holding the paperboard and plastic components of a composite closure together present a number disadvantages and do not lend themselves easily to mass production. The present invention describes two novel approaches, firstly the pre-assembly heating of the closure components with directed hot air to partially melt the thermoplastic surfaces and allow the parts to be immediately assembled sealingly and, secondly, a novel construction of plastic and paperboard composite closure in which the plastic rim is of a two-piece snap-fit constructions which firmly grips the top panel of the paperboard lid.

IPC Classes  ?

• B65D 55/06 - Deformable or tearable wires, strings or strips (caps or cap-like closures with tear-strips )Use of seals
• B29C 65/10 - Joining of preformed partsApparatus therefor by heating, with or without pressure using hot gases
• B65D 43/10 - Removable lids or covers having a peripheral flange fitting over the rim of the container and retained by snapping over beads or projections

Abstract

Conventional adhesive and contact welding methods for holding the paperboard and plastic components of a composite closure together present a number disadvantages and do not lend themselves easily to mass production. The present invention describes two novel approaches, firstly the pre-assembly heating of the closure components with directed hot air to partially melt the thermoplastic surfaces and allow the parts to be immediately assembled sealingly and, secondly, a novel construction of plastic and paperboard composite closure in which the plastic rim is of a two-piece snap-fit constructions which firmly grips the top panel of the paperboard lid.

IPC Classes  ?

• B65D 55/06 - Deformable or tearable wires, strings or strips (caps or cap-like closures with tear-strips )Use of seals
• B65D 43/10 - Removable lids or covers having a peripheral flange fitting over the rim of the container and retained by snapping over beads or projections
• B29C 65/10 - Joining of preformed partsApparatus therefor by heating, with or without pressure using hot gases