| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a separation method of a laminated packaging material containing aluminum capable of recovering an aluminum layer and a resin layer by easily separating them in a reproduction process after the use of the laminated packaging material. <P>SOLUTION: This is the separation method of the laminated packaging material including an aluminum layer, a polyolefin resin layer which contacts with the aluminum layer, and a paper layer. The method has: a step of exfoliating between the paper layer and the resin layer by immersing the laminated packaging material in an aqueous solution; a step of collecting the resin layer from which the paper layer is exfoliated and the aluminum layer from the aqueous solution; a step of exfoliating between the resin layer and the aluminum layer by immersing the collected resin layer and the aluminum layer in a fatty acid solution; and a step of separating the exfoliated aluminum layer and resin layer to collect them from the fatty acid solution. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
