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Patent Name Packaging Bag with Torn Opening Patent Applicant Corporation Hosokawa Kobo Principal Applicant Address Tokyo, Japan Inventor HONDA Application (Patent) No. 02809645.2 Date of Application 2002.04.25 Award Date Approval Notice No. 1537067 Audit Notice Date 2004.10 .13 Specification CD-ROM D0441 Main Classification Number B65D75/58 Classification No. B65D75/58; B32B27/08 Sub-item Original Application No. Priority Citation Abstract A packaging bag comprising a bag body (1), a first heat-sealed portion (5 And a second heat seal portion (5), and a tear initiation portion. The bag body is made of a plastic laminated film having a pair of opposing side edges (2, 3). The bag body is made by bringing the pair of opposing side edges into contact with each other and heat-sealing them together (4) so ​​as to form a tubular body with a back heat-sealing portion (4), and The tubular body is folded into a flat-shaped body having a front face, a back face opposite to the front face, and a pair of opposite side edges (2, 3) connecting the front face and the back face to each other In part, the first opening portion and the second opening portion opposite to the first opening. The back heat seal portion is located on the back side. The first heat-sealed portion formed by heat-sealing the first opening portion (5). Sovereignty Item 1. A packaging bag comprising: a bag body made of a plastic laminated film, the plastic laminated film having a pair of opposite side edges, the bag body being formed by the pair of opposite side edges They are made in contact with each other and are heat-sealed together in their entirety to form a tubular body having a rear heat-sealed portion, which is folded into a flat body with a front face, and A front opposite side, a pair of opposite side edge portions connecting the front and back sides to each other, a first opening portion and a second opening portion opposite to the first opening, and the back surface at the back side is heat-sealed Part; a first heat-sealed portion formed by heat-sealing the first opening portion; a second heat-sealed portion formed by heat-sealing the second opening portion; and a tear starting portion from which the liquid is The packaging bag is torn apart and the tear initiation portion is provided on at least one of the pair of opposite side edge portions and a rear heat-sealing portion, the tear initiation portion including a plurality of Fine recesses opening outwards.