The invention provides a container system comprising a lid and a container. The container includes a neck, and the lid includes a neck-surrounding space defined by two walls of the lid. At least the neck-surrounding space is vacuum insulated, or it is filled with foam, air, or any combination thereof. The lid exhibits numerous technical merits such as improved neck insulation, better efficiency in overall heat insulation, simplicity in usage, and easy manufacturability, among others.

A composite foamed container forming, in the body portion, thereof, a foamed region in which foamed cells are distributed, the foamed region including a first gradationally foamed region A having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the outer surface side of the body portion toward the inner surface side thereof and a second gradationally foamed region having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the inner surface side of the body portion toward the outer surface side thereof. The container has a large resistance against the pressure exerted on the outer surface, good liquid-dispelling property and, at the same time, has improved appearance and heat resistance.

In some embodiments, an insulated container may include a top portion and a bottom portion. The insulated container may include an inner wall extending from the top portion to the bottom portion. The insulated container may include an outer wall extending from the top portion to the bottom portion. The inner wall and the outer wall may be coupled together and may define a space between them. The inner wall and the outer wall may define an aperture. The insulated container may include a viewing window disposed within the aperture. The insulated container may include a cap coupled to the top portion.

A double-layer extruded bottle comprises an inner cup, an outer cup connected to the inner cup, an interlayer gap disposed between the inner cup and the outer cup, and a first insulation layer disposed in the interlayer gap and on an outer peripheral surface of the inner cup. The first insulation layer is integrally formed with the inner cup by an in-mold lamination process. A manufacturing method for the bottle includes forming the first insulation layer and a second insulation layer by in-mold lamination, pattern printing, punching and shaping, blow molding, and assembly and welding of the inner and outer cups. The extruded bottle has a double-layer structure that improves the heat preservation performance. The integrated molding method shortens the production cycle and reduces the production cost. Decorative patterns can be printed on outer surfaces of the insulation layers.

A vacuum flask including an outer shell, a cage removably coupled with the outer shell, and a bottom cover coupled to the cage. The bottom cover and outer shell enclose the internal cage when the cage is coupled with the outer shell. The cage is configured to receive a vessel for holding a liquid, an infant bottle, or one or more milk bags. In some examples, the vacuum flask may be used to store, one of a vessel (e.g., container) specified for storing a liquid, an infant bottle, or milk storage bags.