ENVASE DE ASPECTO LISO, METODO DE SU FABRICACION Y BOBINA DE PRODUCTOEN BANDA PARA SU FORMACION.

摘要

A sealable container (20) comprises an inner bag (24) within an outer bag (26) with a gas space (28) in between. The inner bag (24) is formed of a flexible sheet (40) of gas impervious material and the outer bag is formed of a flexible sheet (42) of different material. The inner bag (24) is secured to the outer bag (26) along the top (32) and bottom (30) edges and along a vertically oriented back seam (52) by spaced areas (44, 46) of adhesive which define passageways (58) through which ambient air may enter the space (28).