| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing bag capable of smoothly and surely discharging excess air in the bag to the outside of the bag, and not intruding water and an insect, without impairing strength of the packing bag, in the plastic film rice-grain packing bag provided with a deaeration small hole.SOLUTION: A packing bag 1 is formed by thermally adhering a plastic single layer or multilayer laminate film in a bag shape, and a plurality of holes having a hole diameter of 100-1000 μ are arranged in a zigzag shape in a position of 5-10 mm from the inner edge of an upper seal part 2 and a side seal part 3 of the packing bag 1, and the holes are arranged in 2-4 rows in parallel to the upper seal part 2 and in 2-5 rows in parallel to the side seal part 3, and the packing bag 1 having an air bleeding mechanism is constituted by providing so that a longitudinal arrangement distance and a lateral arrangement distance of the holes are 6-12 mm.SELECTED DRAWING: Figure 1 |
