| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging bag which can be easily unsealed straight from a predetermined position, and has excellent take-out suitability of contents since its opening is wide. SOLUTION: In the pillow-type packaging bag, a film laminate having a sealant resin layer fusable by a heat seal is set so that the sealant resin layer forms the innermost layer, and affixed by a back-affixed seal part in butt-seam and end seal parts at upper and lower ends orthogonal to the back-affixed seal part. A half-cut line is formed along the base route part of the back-affixed seal part in its pillow-shaped barrel portion from the upper end seal part to the lower end seal part. Any one of the upper and lower end seal parts with the half-cut line being thereacross forms an unsealing start end for unsealing the packaging bag. A part of the barrel portion is opened and unsealed by separating a part from the unsealing start end to the other end seal part along the half-cut line. COPYRIGHT: (C)2009,JPO&INPIT
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