Beverage container having a pressure-relief device and a method of manufacturing a beverage container having a pressure-relief device

A closure for a collapsible beverage container having a body part defining an inner volume for accommodating a beverage and a cylindrical neck part defining an opening, an inwardly oriented surface and an outwardly oriented surface, the closure configured for sealing off said opening of said cylindrical neck part, the closure defining an interior surface configured for facing the inner volume of the beverage container, and an exterior surface configured for facing an external space,

• the closure comprising a closure disc configured for facing said inner volume of said collapsible beverage container, an inner cylindrical part configured for facing said inwardly oriented surface of said cylindrical neck part and an outer cylindrical part configured for facing said outwardly oriented surface of said cylindrical neck part, said closure disc comprising a beverage outlet for extracting said beverage from said beverage container,
• said closure further comprising a pressure-relief device located at said closure disc or said inner cylindrical part, said pressure-relief device being capable of establishing a permanent or reclosable opening through said closure or configured for being capable of establishing a permanent or reclosable opening between said closure and said neck part for allowing a flow of fluid from said interior surface, through said opening, and to said exterior surface when a pressure difference between said interior surface and said exterior surface exceeds a predetermined pressure value, wherein the pressure-relief device comprises a spring for biasing the pressure-relief device towards a closed state, wherein the spring is located outside of the inner volume.

A closure for a collapsible beverage container having a body part defining an inner volume for accommodating a beverage and a cylindrical neck part defining an opening, an inwardly oriented surface and an outwardly oriented surface, the closure configured for sealing off said opening of said cylindrical neck part, the closure defining an interior surface configured for facing the inner volume of the beverage container, and an exterior surface configured for facing an external space,

• the closure comprising a closure disc configured for facing said inner volume of said collapsible beverage container, an inner cylindrical part configured for facing said inwardly oriented surface of said cylindrical neck part and an outer cylindrical part configured for facing said outwardly oriented surface of said cylindrical neck part, said closure disc comprising a beverage outlet for extracting said beverage from said beverage container,
• said closure further comprising a pressure-relief device located at said closure disc or said inner cylindrical part, said pressure-relief device being capable of establishing a permanent or reclosable opening through said closure or configured for being capable of establishing a permanent or reclosable opening between said closure and said neck part for allowing a flow of fluid from said interior surface, through said opening, and to said exterior surface when a pressure difference between said interior surface and said exterior surface exceeds a predetermined pressure value, wherein the pressure-relief device is located outside of the inner volume.