| 摘要 |
PROBLEM TO BE SOLVED: To provide a food packaging bag which dispenses with a conventional cut tape through a front film and a soil preventive film that are welded together by heat, improves productivity efficiency, facilitates unsealing of the bag, and has a fine appearance to raise the commodity value of the bag. SOLUTION: The food packaging bag comprises a bag body 2 which is formed by superposing the front film 3 on a back film 4 and heat-welding both films 3 and 4 on their both side edges 7 and 7 and at the root 9 of their tapered portion 6 to provide a food inlet opening 12 in opposite to the tapered portion side 6, and the soil preventive film 5 which is formed inside the bag body 2. The soil preventive film 5 is heat-welded in the form of a strip to the front film 3 at the center in the direction of the width of the bag body 2 in perpendicular to the width direction to provide a strip-like heat-welded part 8, at both sides of which two stripes of perforated incisions 10 and 10 are formed. Unsealing incisions 11 and 11 are formed on the tapered portion side 6 on the front film 3 to be parallel with the perforated incisions 10 and 10. Preferably, the front end of the unsealing incisions 11 and 11 is made into a tab, and the front film 3 is made of a synthetic resin oriented film. COPYRIGHT: (C)2006,JPO&NCIPI
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