| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which is given the appearance characteristics by forming fold marks on the body film of the packaging bag. SOLUTION: The packaging bag is a self-supporting bag formed by filling a liquid material (20) into a bottom gusset bag, which is made by heat welding a doubled bottom tape (11) to two front/back body films (12 and 13), and closing an opening of the gusset bag by heat welding. A plurality of fold marks (a and a) are formed on either or both of the front/back body films (12 and 13). The body films are transparent, and a pattern layer (14) is formed on the inner surface of the back body film (13), where the pattern layer (14) can be visually recognized through the liquid material from the outer surface side of the front body film (12). COPYRIGHT: (C)2007,JPO&INPIT
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