To provide a bag using a plastic film with a plurality of storage sections capable of being folded in a bellows, and a manufacturing method and a manufacturing apparatus for the same.
At boundaries 61 to 64, films are disposed in close contact with one another on one of the front face and the rear face, and gaps 51 to 54 are formed alternately on the other face. In the boundary 61, the front films 31, 32 are disposed in close contact with each other at the front face side, and the rear films 41 and 42 are disposed to form a gap 51 between the films 41, 42 on the rear face side. Thus, the gap 51 is bent to form a valley. These procedures are applied to the other boundaries 62 to 64 so that the bags can be bent in bellows shapes.
COPYRIGHT: (C)2007,JPO&INPIT
MATSUBARA TOMOSATO
ISHIJIMA TSUTOMU
