PACK FOR STORAGE (VARIANTS) Russian patent published in 2008 - IPC B65B7/00 B65D75/58 B65D75/30 B65D33/16 

FIELD: production methods.

SUBSTANCE: pack for storage contains material of the cover, generating the chamber inside the pack for keeping there any products, the area of accessing is close to the edge of the pack. The band seam, goes along the area of accessing, is done by opposed material planes, pressed in hermetical connection. The cracking bubble inside the band seam is situated between the opposed planes. The inside part of the band seam between bubble and chamber is generated by opposed planes. The outside part of the band seam between bubble and chamber is generated by opposed planes. The bubble is capable for exceeding to the edge of the pack with the pressure and separates the planes, till the bubble not cracks by the edge, creating the breakthrough of the edge in the outside part of the seam. The opposed laminated valves are done by opposed planes of outside part of the seam, along the breakthrough of the edge, when the bubble is cracking. The valves can be torn by separation of the opposed planes, to open the band seam.

EFFECT: the pack for storage is opened easily without breakthrough of packing material or using special instrument or device.

35 cl, 14 dwg