| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing material allowing securement of visibility of print display of the surface of the packing material by suppressing frost that adheres to the surface of the printed packing material in a distribution process of a package or during rapid cooling of a content in chilling when obtaining a vacuum package.SOLUTION: The packing material 1 includes an inner bag 11 storing a frozen food or a chilled food as the content and an outer bag 12 which covers the inner bag 11 and is joined to the inner bag 11. A part of a portion 1s in which the inner bag 11 and the outer bag 12 are joined is formed with an air passage 1p, the length of the air passage 1p is 20-60% for the total length of the joined part, and a space between the inner bag 11 and the outer bag 12 communicates with the atmosphere through the air passage 1p. The inner bag 12 can be a three-sided bag or a pillow type bag formed by thermally fusing edge parts of two laminated bodies having at least a base layer 11a and a heat seal layer 11b. |
