The present disclosure provides a lid that has a design that is configured to enable drinking from any point along the perimeter of the lid while at the same time preventing liquid to escape from the lid when a user is not drinking (i.e., spill proof). The lid has a plurality of slits around at least a portion of the lid.

The present disclosure provides a lid that has a design that is configured to enable drinking from any point along the perimeter of the lid while at the same time preventing liquid to escape from the lid when a user is not drinking (i.e., spill proof). The lid has a plurality of slits around at least a portion of the lid.

A container made of an elastomer such as silicone with an integrated leak resistant seal and pressure shield. The seal incorporates press-fit elements with sizes and shapes sufficient to provide a strong seal that resists leakage of liquids from inside the container. The seal is integrated into the container and requires no external clips or clasps. The pressure shield increases leak resistance by at least 300% and is formed by adding material to the inside of the container and not to the engaging portions of the seal and works by deflecting pressure away from the two leak resistant seal portions. Additional features are provided to facilitate opening such as extended flaps for pulling the sides open, and asymmetric cavities for press-fit elements to reduce the initial opening force. The container itself may be of asymmetrical shape, such as trapezoidal, to provide a wide opening along with a strong seal.

A container made of an elastomer such as silicone with an integrated leak resistant seal and pressure shield. The seal incorporates press-fit elements with sizes and shapes sufficient to provide a strong seal that resists leakage of liquids from inside the container. The seal is integrated into the container and requires no external clips or clasps. The pressure shield increases leak resistance by at least 300% and is formed by adding material to the inside of the container and not to the engaging portions of the seal and works by deflecting pressure away from the two leak resistant seal portions. Additional features are provided to facilitate opening such as extended flaps for pulling the sides open, and asymmetric cavities for press-fit elements to reduce the initial opening force. The container itself may be of asymmetrical shape, such as trapezoidal, to provide a wide opening along with a strong seal.

The disclosure relates to forming shaped thermoplastic articles having smooth peripheries. Many thermoplastic articles have sharp edges formed upon molding or cutting the article from a feedstock sheet. Such sharp edges can damage thin plastic films or flesh which they contact, and smoothing the edges is desirable. Described herein are methods of forming a smooth periphery for such sharp-edged articles by rolling over the sharp edge. The smoothing operation is performed by forming a deflectable flange including a bend region separated from the potentially sharp peripheral edge by a spacer, deflecting a portion of the deflectable flange, and softening at least one bent portion of the deflectable flange to yield a smooth periphery upon cooling.

Embodiments include a method of manufacturing a container with a leak resistant seal. The method includes forming an elastomer or a plastic or any combination thereof into a container inside out by forming an outside portion of the container on an internal surface of the container before inverting the container and forming an inside portion of the container on an external surface of the container before inverting the container. In embodiments, the method includes forming or coupling a leak resistant seal on the external surface of the container before inverting the container. The leak resistant seal provides access to the inside portion of the container when the leak resistant seal is open after inverting the container and holds at least liquid internal to the container when applying an external force to the container without use of an external structure to keep the leak resistant seal closed after inverting the container.

Embodiments include a method of manufacturing a container with a leak resistant seal. The method includes forming an elastomer or a plastic or any combination thereof into a container inside out by forming an outside portion of the container on an internal surface of the container before inverting the container and forming an inside portion of the container on an external surface of the container before inverting the container. In embodiments, the method includes forming or coupling a leak resistant seal on the external surface of the container before inverting the container. The leak resistant seal provides access to the inside portion of the container when the leak resistant seal is open after inverting the container and holds at least liquid internal to the container when applying an external force to the container without use of an external structure to keep the leak resistant seal closed after inverting the container.

The present invention relates generally to a dent prevention structure of a food cooking container. More particularly, the present invention relates to a dent prevention structure of a food cooking container, in which the dent prevention structure allows vapor produced from contents in the container to be discharged to the outside of the container through a discharge hole, and allows outside air to be supplied to an inner space part of the container through the discharge hole, thereby preventing the container from being dented inwards. The dent prevention structure being open at an upper part thereof to store food includes: an inner space part; a flange surface; a main sealing protrusion part; an auxiliary sealing protrusion part; a discharge hole; a sharp part; and protrusion guides.

The present invention relates generally to a dent prevention structure of a food cooking container. More particularly, the present invention relates to a dent prevention structure of a food cooking container, in which the dent prevention structure allows vapor produced from contents in the container to be discharged to the outside of the container through a discharge hole, and allows outside air to be supplied to an inner space part of the container through the discharge hole, thereby preventing the container from being dented inwards. The dent prevention structure being open at an upper part thereof to store food includes: an inner space part; a flange surface; a main sealing protrusion part; an auxiliary sealing protrusion part; a discharge hole; a sharp part; and protrusion guides.

A packaging system includes a base, a lid, a closure structure, and an adhesive deposit. The base has a well. The lid is hingeably connected to the base and has a user input region and a protrusion projecting into the well. The closure structure is configured for releasably retaining the lid in a closed position relative to the base. The adhesive deposit is located within the well and at least partially surrounds the protrusion, and forms a first plurality of adhesive bonds with the well and a second plurality of adhesive bonds with the protrusion. The second plurality of adhesive bonds and the closure structure are configured to exert a combined retention force of at least 20N.