Abstract: A closure device for containers suitable for holding liquids may include: a collar adapted to be applied to a neck of a liquid container, the collar having a lip; an elastically deformable membrane, configured to connect to the collar and to close the liquid container, wherein the membrane is configured to rest upon the lip and to define a seal along the lip, and wherein the seal is at least partially releasable by pressure exerted by a mouth of a user; and first and second flanges. The first flange is formed as a single piece with the membrane. The second flange is fixed to the collar to be locked between the first flange and the membrane. The first flange includes: a first portion projecting out of the membrane; and a second portion projecting out of the first portion. The second portion is oriented perpendicularly to the first portion.

Abstract: Food container including: an external container composed of a material comprising a first plastic material, an internal container composed of a material comprising a second plastic material, said internal container being arranged inside the external container and being welded to the external container so as to form a sealing cavity between the internal container and the external container, said cavity including gas, characterized in that at least a portion of said internal container is resilient and configured to deform under expansion of the gas contained inside the cavity.

Abstract: A closure device (1) for containers comprises a collar (3) that is adapted to be applied to a neck (2a) of a liquid container (2) and has a lip (5); an elastically deformable membrane (6), that is adapted to be connected to the collar (3) and to close the container (2), the membrane (6) is configured to rest upon the lip (5) and define a seal (7) along the lip (5), the seal (7) is designed to be at least partially released by the pressure exerted by the mouth of a user; a first flange (10) and a second flange (11), the first flange (10) is formed as a single piece with the membrane (6), the second flange (11) is fixed to the collar (3) to be locked between the first flange (10) and the membrane (6).

Abstract: A closure device for containers comprises a lid having a spout (4) with holes (4a), a valve body (9) attached to the lid (4) and operable on the spout (4). The valve body (9) comprises a cup-shaped element (10) having a blind bottom wall (10a) and a side wall (10b) that emerges from the bottom wall (10a) and delimits an upper opening, the side wall (10b) of the cup-shaped element (10) being made of a resilient material, and at least partially contacting a first sleeve (5) of the lid (2), which is in fluid communication with the spout (4). The side wall (10b) of the cup-shaped element (10) contacts the first sleeve (5) in a fluid-tight manner and moves away from the first sleeve (5) in response to a negative pressure introduced through the spout (4).

Abstract: A closure device for containers comprises a lid having a spout (4) with holes (4a), a valve body (9) attached to the lid (4) and operable on the spout (4). The valve body (9) comprises a cup-shaped element (10) having a blind bottom wall (10a) and a side wall (10b) that emerges from the bottom wall (10a) and delimits an upper opening, the side wall (10b) of the cup-shaped element (10) being made of a resilient material, and at least partially contacting a first sleeve (5) of the lid (2), which is in fluid communication with the spout (4). The side wall (10b) of the cup-shaped element (10) contacts the first sleeve (5) in a fluid-tight manner and moves away from the first sleeve (5) in response to a negative pressure introduced through the spout (4).