초록 ▼

A container for vacuum packaging of products includes an outer container and an inner liner which conforms generally to the configuration of the outer container and is secured to the upper open end thereof while the remainder of the container and liner are unattached. A vent is provided between the

A container for vacuum packaging of products includes an outer container and an inner liner which conforms generally to the configuration of the outer container and is secured to the upper open end thereof while the remainder of the container and liner are unattached. A vent is provided between the atmosphere and the space between the container and liner so that the liner can expand and collapse as differential pressures are applied to the product sealed in the liner by a plastic film secured open end thereof.

대표청구항 ▼

A method of packaging products comprising the steps of placing an inner flexible liner means into an outer container, said outer container having a relatively rigid side wall means upstanding from the bottom wall to provide an open end, forming a rigid ring on an upper peripheral open end of said li

A method of packaging products comprising the steps of placing an inner flexible liner means into an outer container, said outer container having a relatively rigid side wall means upstanding from the bottom wall to provide an open end, forming a rigid ring on an upper peripheral open end of said liner, attaching the rigid ring to the periphery of said open end of said container to produce a seal between the liner and container and a space between the liner and container below the open ends, introducing a product into said liner through an open end thereof with said liner flexing during insertion of said product to generally conform said liner to the inside of said outer container, sealing said open end of said liner, causing said product in said liner to contract whereby at least portions of said liner will draw away from said outer container, the contraction of said product causing a substance to be drawn through said vent hole means into said space between said liner and said outer container, and subsequently sealing said vent hole means to seal the space between said liner and said outer container. A method of vacuum packaging food products comprising the steps of inserting an inner liner into an outer container having a rigid side wall and a bottom wall, supporting a peripheral open end of said liner on the peripheral open end of said container, producing an air space between said outer container and said liner that is in venting communication with the atmosphere through a venting opening with the vent opening being located between the open end of the liner and the open end of the container, inserting a product into said liner, hermetically sealing said open end of said liner with a cover liner and effecting a negative pressure in said liner while maintaining the air space between said container and liner at substantially atmospheric pressure, and subsequently sealing a vent opening with said cover liner after said product is sealed and processed to hermetically seal said outer container.