| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a packaging bag which can be manufactured continuously, efficiently and at low cost and can make a bottom edge rigid. <P>SOLUTION: A folding back flap 4 is formed at the bottom edge of a body 3 by piling a surface material part 4a and a back surface material part 4b and folding back them to the body back surface side and the back surface material part 4b in the folding back flap 4 is pasted on the back surface of the body 3 via an adhesive t and also the surface material part 4a in the folding back flap 4 is pasted on the back surface of the body 3 with the same adhesive t via a through-hole 5 formed on the back surface material part 4b in the folding back flap 4. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
