초록 ▼

Within a bag for vacuum packaging of articles there is created, by means of a separately attached sheet, an auxiliary chamber which is evacuated when the bag is manufactured. This chamber may be placed in communication with the interior of the bag, after the latter has been filled and sealed. Such c

Within a bag for vacuum packaging of articles there is created, by means of a separately attached sheet, an auxiliary chamber which is evacuated when the bag is manufactured. This chamber may be placed in communication with the interior of the bag, after the latter has been filled and sealed. Such communication is achieved by piercing or tearing the separately attached sheet, so that the residual air in the sealed bag expands into a greater volume in which it is isolated from the product in the bag.

대표청구항 ▼

A bag for vacuum packaging of articles, said bag comprising: flexible walls; a sealable closure, said flexible walls and sealable closure defining an interior of said bag for receiving articles; an auxiliary chamber; a wall common to said interior and said auxiliary chamber, said auxiliary chamber b

A bag for vacuum packaging of articles, said bag comprising: flexible walls; a sealable closure, said flexible walls and sealable closure defining an interior of said bag for receiving articles; an auxiliary chamber; a wall common to said interior and said auxiliary chamber, said auxiliary chamber being evacuated at the time of the manufacture of the bag; communicating means for establishing communication through said wall common to said interior of said bag and said auxiliary chamber to permit residual air in said interior to flow into said auxiliary chamber after said bag has been filled, closed and sealed.