| 摘要 |
PROBLEM TO BE SOLVED: To provide a mouth device for a pouch that having a form easy in the unsealing of the pouch. SOLUTION: The mouth device is composed of a spout 1 and a screw lid 2. The spout 1 is equipped with a cylindrical body 3 which has a welding portion 8 to which a packaging bag S is welded, second flanges 10 used for filling and capping, and a first flange 9 for holding a PP band 4 of the screw lid 2 to prevent the upward movement of the PP band 4. The welding portion 8 is composed of horizontal ribs and vertical ribs 7, and the plane shape (or bottom face shape) of the welding part 8 is an approximate hexagon having a parallel portion 8a formed on a longitudinal intermediate part and narrowing portions 8b formed on both sides of the parallel portion 8a. By the parallel portion 8a, the welding portion 8 is easy for a person to catch with fingers upon unsealing the spout 1, thus allowing unsealing with a small force. COPYRIGHT: (C)2007,JPO&INPIT
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