| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a paper box for packaging which is surely pasted and assembled and completely biodegraded when it is landfilled for disposal. <P>SOLUTION: The paper box for packaging is made of a blank sheet constituted by sticking a biodegradable laminate material 14 made of a polylactic acid-based polymer on a cardboard 12. The blank sheet is formed of an integrally punched box forming piece 16. The box forming piece 16 includes mutually connected side faces 18, 20, 22 and 24 and a pasting piece 26 integrally provided with the side face 18 to be pasted to the back surface of the side face 24 when it is assembled. A surface treatment for improving adhesion is applied on the surface of the biodegradable laminate material 14 of the pasting piece 26. The surface treatment of the material 14 is corona discharge treatment, and further, an anchor coat layer 27 is provided on the surface of the material 14 of the piece 26. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
