In an embodiment, the invention comprises a container comprising: a base; at least one sidewall extending upwardly from the base and terminating in a top edge, wherein the at least one sidewall is paper-based; a removable flexible membrane adhered to the top edge, wherein the membrane comprises a one-way valve; a liner ply at least partially adhered to an interior surface of the sidewall, wherein the liner ply is configured to at least partially release from the sidewall upon a pressure differential between the pressure within the container and the external pressure.

Tamper-evident features for containers. A tamper-evident film is target printed onto a sheet material that is thermoformable. The sheet is thermoformed into a container base or lid having a desired shape, such that the tamper-evident film is positioned in a desired area. A container lid is disposed on the container base, and heat sealed to a rim or edge of the container base. The heat sealing activates an adhesive of the tamper-evident film, and when the container lid is removed or separated from the container base, a first portion of the tamper-evident film remains on the container lid and a second portion remains on the container base. The separation of the tamper-evident film provides an indication of tampering.

A packaging for medical devices, including a tub provided with a peripheral wall delimiting an upper opening, a sealing cover sealable on the upper opening of the tub, and a sealing film adapted to be positioned on the upper face of the sealing cover. The sealing film, including a protective foil, an adhesive layer extending over the protective foil, and a peelable sheet having a first portion extending over the adhesive layer opposite to a first portion of the protective foil. The first portions of the protective foil and peelable sheet are arranged in a retracted position uncovering the sealing cover. A second portion of the protective foil, distinct from the first portion, is bonded to the sealing cover and/or to the tub by the adhesive layer, and a second portion of the peelable sheet, separated from said second portion of the protective foil, is arranged so as to be pullable by a user to progressively separate the first portion of the peelable sheet from the first portion of the protective foil to an extended position wherein the protective foil adheres to the sealing cover.

Various enhancements of heat seals are provided herein with sealant layers that provide for decreased chance of oversealing the heat seal to a container. Such enhancements include the use of various types of resins in combination to provide for desirable heating and sealing characteristics. Further, the heat seals may be especially suitable for use with polyester containers, such as those containing polyethylene terephthalate.

There is provided a container that makes it possible to suppress intrusion of bacteria from the tip of a pleat part into the inside of the container. The container includes: a main body that includes a body part defining a containing portion and a flange part extending outward from an upper portion of the body part; and a lid that is joined to the flange part of the main body via an outer edge seal portion so as to cover the containing portion, the lid being formed by a lid member folded back at a fold-back portion such that portions of the lid member overlap each other. The lid has: a pleat part that includes the portions of the lid member overlapping each other and that extends from an edge of one side to an edge of the other side of the lid in a first direction; and a first lid part and a second lid part that are formed by the lid member and that are arranged on opposite sides of the pleat part. The pleat part includes: a pleat seal portion in which inner surfaces of the portions of the lid member are joined together and that extends from the edge of the one side to the edge of the other side of the lid in the first direction; and a steam passing portion that includes a through hole or a cutout formed in the pleat seal portion. Seal strength of the pleat seal portion is lower than that of the outer edge seal portion.

A package with a selectively openable case and tray to selectively allow access to one or more compartments is disclosed.

A blister package for a contact lens includes a base sheet and a sealing sheet. Either the base sheet or the sealing sheet includes a bowl, and the other sheet includes a dome and a sealing surface. The dome has a radius of curvature of about 13 mm to 19 mm and a height of less than 7 mm relative to the sealing surface. The dome is configured to protrude into the bowl to form a cavity. Related methods are also described.

A lidding device (102) includes a first panel (104) comprising a lid (106) configured to cover and seal a food container (108). A second panel (110) is foldably connected to the first panel. A third panel (112) includes a bottom panel opposite the lid, wherein the second panel is foldably connected to the first panel and the third panel. A fourth panel (114) is foldably connected to at least one of the first panel and the third panel, wherein the fourth panel and second panel are configured to at least partially enclose a food container between the second and fourth panels.

Disclosed herein are fusion packaging and fusion packages. One package includes a frame configured to provide structure for the package, a sidewall fused to the frame, and a tethered cap connected to one end of the frame. Another package includes a sleeve configured to provide structure for the package, a tethered cap fused to one end of the sleeve, and a seal configured to be fused to a remaining end of the sleeve after the package is filled with content. Another package includes a frame configured to provide structure for the package, a film fused to the frame, a cap connected to one end of the frame, the cap including a structure to retain the cap after removal from the frame, and a seal connected to another end of the frame, where one of the cap and seal are connected to the frame after material placement.

A peelable lid system includes a peelable lid, a seal configured to seal the peelable lid to a container, a handle coupled to the peelable lid, and a lifting mechanism coupled to handle. The lifting mechanism can be coupled to the peelable lid at a plurality of attachment points, including at least one attachment point coupled to the peelable lid away from the handle. The lifting mechanism can be configured to lift at least one portion of the peelable lid near each of the plurality of attachment points.