MULTIPLE BAG, ITS MANUFACTURING METHOD, AND MULTIPLE BAG FOR BAG-MAKING AND FILLING

摘要

PROBLEM TO BE SOLVED: To provide a multiple bag of high quality capable of being simplified in its manufacturing process by allowing a multiple film supplying system to supply two sheets of film at a time, and without using a slippage preventing means for preventing slippage between the multiple sheets of film in the process of supplying the same, and the method of manufacturing and filling the bag.

SOLUTION: The multiple bag 1 is made by bending a multiple film 4 having at least inside and outside laminated sheets 2 and 3 of film in a shape of a cylinder and sealing the overlapped portions 7 and 8 thereof to form a sealed back portion 9. The multiple film 4 constituting the multiple bag 1 is a double-sheet film formed by flattening a tube-shaped film such that the double sheets are continuous at both the side edges 6 and 6 thereof parallel to a direction in which they are extruded. The multiple bag 1 is hermetically formed of the sealed back portion 9, an area sealing portion 12 at one edge side thereof and an area sealing portion 13 at the other edge side thereof.

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