A container includes an outside portion forming an external surface of the container, an inside portion forming an internal surface of the container, and a container seal arranged on the internal surface and configured to open and close the container for providing access to the inside portion. The container seal includes a male seal portion arranged on the internal surface of a first side of the container, a female seal portion arranged on the internal surface of a second side of the container, a gap between a first end of the male seal portion on the first side of the container and a second end of the female seal portion on the second side of the container, and at least one gap seal that is disposed within the gap, between the male seal portion and the female seal portion.

A container includes an outside portion forming an external surface of the container, an inside portion forming an internal surface of the container, and a container seal arranged on the internal surface and configured to open and close the container for providing access to the inside portion. The container seal includes a male seal portion arranged on the internal surface of a first side of the container, a female seal portion arranged on the internal surface of a second side of the container, a gap between a first end of the male seal portion on the first side of the container and a second end of the female seal portion on the second side of the container, and at least one gap seal that is disposed within the gap, between the male seal portion and the female seal portion.

A sustainable sealed package includes a biofoam molded tray and a paperboard substrate. The biofoam molded tray includes a circumferential flange defining an opening to an interior cavity of the biofoam molded tray. A heat sealing layer is on a first major side of a paperboard substrate. The heat sealing layer is sealed to the circumferential flange of the biofoam molded tray.

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. The deflection can include curling the spacer at or near the peripheral edge. The methods can be performed incrementally and/or in a reciprocating fashion.

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. The deflection can include curling the spacer at or near the peripheral edge. The methods can be performed incrementally and/or in a reciprocating fashion.

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 is directed to a child resistant double seam container lid including an adapter ring for securely affixing to the double seam top rim of conventional containers that will be difficult for children to open, yet readily openable by adults. More particularly, a two-piece, and three-piece child resistant double seam affixable container lid is provided having a first piece lid portion, a second piece adapter ring locking member second piece and optionally a third piece securing unit piece, with first and second rotational alignment indicators on the lid portion and adapter ring, and optional additional integral features such as a liquid measuring cup feature, a liquid tight lid feature, a threaded lid portion, a replaceable double seam container lid portion and a double seam container lid locking member adapter ring variously configured to be securely affixable to the double seam container rim.

The present invention is directed to a child resistant double seam container lid including an adapter ring for securely affixing to the double seam top rim of conventional containers that will be difficult for children to open, yet readily openable by adults. More particularly, a two-piece, and three-piece child resistant double seam affixable container lid is provided having a first piece lid portion, a second piece adapter ring locking member second piece and optionally a third piece securing unit piece, with first and second rotational alignment indicators on the lid portion and adapter ring, and optional additional integral features such as a liquid measuring cup feature, a liquid tight lid feature, a threaded lid portion, a replaceable double seam container lid portion and a double seam container lid locking member adapter ring variously configured to be securely affixable to the double seam container rim.

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.