A lid for a container includes snap-fit hooks for interlocking engagement in complementing latching openings of an outwardly projecting flange of a jacket of the container, and stacking parts disposed on a lower side of the lid close to the periphery for form-fitting engagement in complementing stacking parts on an upper side of a further said lid, when the lids are stacked. The lower side of the lid and the upper side of the further lid have each a central region that forms a contact area via which compressive forces are transmissible in the presence of a contact between the contact areas of the lower side of the lid and the contact area of the upper side of the further lid.

The present disclosure describes a security ring mated to a cup lid of a disposable cup for a spill-proof purpose. The security ring, when engaged with the paired cup lid, provides a seal for the disposable cup as well as inseparableness from each other in the event the disposable cup is toppled or falls from a high ground. The engagement in the first embodiment of the present disclosure between the security ring and the cup lid arises from a secure reception of one or more interlocking members on the cup lid by one or more corresponding retaining members on the security ring. The engagement in the second embodiment involves a hitching member and a receiving member on the security ring capable of latching up therein at a plurality of locations so as to accommodate the cup lid having a plurality of heights and shapes.

An apparatus and method for manufacturing a container with a closure-release mechanism. The process in particular relates to thermoforming a plastic sheet to form a container with a clam shell locking system in order to facilitate a secure closure and easy opening packaging container. The clam shell locking arrangement comprises a post which is secured in an aperture when the container is in closed state. The post is a projection or protrusion in a vertical or nearly vertical sidewall of the cover of the thermoformed package and fits securely into the aperture, which is a cut-out made in the outer, and optionally also the inner, wall segments of the vertical or nearly vertical surfaces of the base section of the thermoplastic containers.

A container includes a base, and a jacket adjoining the base and having a peripheral flange which defines an opening cross section which can be closed by a cover. The cover includes first snap-fit hooks distributed about a periphery of the cover for engagement in complementing first latching openings in the peripheral flange to thereby establish a form fit that prevents a movement away from the base and parallel to a vertical axis of the container in perpendicular relation to the base. The peripheral flange has four corner regions, each provided with a second latching opening for engagement of a second snap-fit hook of the cover. The second latching opening has at least one portion configured curved or inclined in relation to both a transverse axis and a longitudinal axis of the container, or has at least two straight portions extending at an inclination in relation to one another.

A packaging container includes a base section having a U-shaped perimeter wall and a cover section having a cover outer wall, the cover section adapted to cover the base section when in a closed state. The packaging container includes a closure mechanism including an aperture formed within an outer wall segment of the base section and a projection extending inward from the cover outer wall for engaging the outer aperture of the base section. The closure mechanism retains the cover section over the base section and securing the packaging container in a closed position, wherein an obstructive member obstructs movement of the inner wall segment of the base and prevents the projection from being released from the outer aperture. A release tool is provided for being inserted between the cover outer wall and the base outer wall, wherein the release tool is adapted to move the cover outer wall outwardly to release the projection from the outer aperture, thereby opening the packaging container.

A child resistant packaging container having a closure and release mechanism is provided having a base section and a cover section, with the cover section adapted to cover the base section when in a closed state. The closure and release mechanism includes an inner aperture formed within an inner wall segment of the base section and an outer aperture formed within an outer wall segment of the base section, which is aligned with the inner aperture. A projection extending inwardly from a side wall portion of the cover section is also provided for engaging the outer aperture and the inner aperture of the base section. Thus, the closure and release mechanism retains the cover section over the base section and secures the packaging container in a closed position. The projection is released from the outer aperture by depressing a deformable flange and applying inward pressure to the outer wall, thereby opening the packaging container.

A thermoformed packaging container includes a base section having a bottom surface and spaced apart inner and outer wall segments with a base rim therebetween. The outer wall segment has a deformable flange extending laterally and outwardly therefrom. A cover section includes a top surface, a cover rim, and a side wall portion, wherein cover section adapted to cover said base section when in a closed state. The packaging container includes a closure and release mechanism including an aperture formed within said outer wall segment of the base section, a projection extending inwardly from the side wall portion of the cover section operable to engage the aperture. The closure and release mechanism retains the cover section over the base section and securing the packaging container in a closed position. The projection is released from the aperture by depressing the deformable flange, thereby opening the thermoformed packaging container.

A child resistant packaging container having a closure and release mechanism is provided having a base section and a cover section, with the cover section adapted to cover the base section when in a closed state. The closure and release mechanism includes an inner aperture formed within an inner wall segment of the base section and an outer aperture formed within an outer wall segment of the base section, which is aligned with the inner aperture. A projection extending inwardly from a side wall portion of the cover section is also provided for engaging the outer aperture and the inner aperture of the base section. Thus, the closure and release mechanism retains the cover section over the base section and secures the packaging container in a closed position. The projection is released from the outer aperture by depressing a deformable flange and applying inward pressure to the outer wall, thereby opening the packaging container.

A packaging container having a closure and release mechanism is provided having a base section and a cover section, with the cover section adapted to cover the base section when in a closed state. The closure and release mechanism includes at least one first aperture formed within an inner wall segment of the base section and at least one second aperture formed within an outer wall segment of the base section, which is aligned with the at least one first aperture. At least one projection extending inwardly from a side wall portion of the cover section is also provided for engaging the at least one first aperture and the at least one second aperture of the base section. Thus, the closure and release mechanism retains the cover section over the base section and secures the packaging container in a closed position. The at least one projection is released from the at least one first aperture and the at least one second aperture by depressing a deformable flange, thereby opening the packaging container.

A packaging container having a secure closure includes a base section and a cover section, with the cover section adapted to cover said base section when in a closed state. The closure mechanism includes a first aperture formed within an inner wall segment of the base section and a second aperture formed within an outer wall segment of the base section. A projection extends inwardly from a side wall portion of the cover section for engaging the first and second apertures of the base section, wherein the closure mechanism retains the cover section over the base section and securing the packaging container in a closed position.