| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive packaging bag for powder by a simple structure which facilitates the filling of the powder and can of prevent the leakage of the powder after being filled. <P>SOLUTION: The packaging bag for powder includes: a bag base material 20 which is formed in a flat folded and crushed tubular shape, and has a tucking part 22 formed by forming an oblique folding line 21 in an tubular opening, and the first and second folding lines 23 and 24 formed parallel to the tubular opening end; the first adhesive layer 32 which is formed on the inner surface of the flat folded and crushed tubular shape and is bondable to the inner surface; a protrusion 31 protruding outward of a point of the intersection of the first and second folding lines 23 and 24 and the oblique folding line 21; a valve base material 30 bonded to the tucking part 22 between the first folding line 23 and the second folding line 24; and a decorative paper base material 40 mounted outward of the opening of the bag base material 20 and pasted on the opening of the bag base material 20 which is closed by being folded along the second folding line 24 and the first folding line 23. <P>COPYRIGHT: (C)2012,JPO&INPIT |
