| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the generation of dioxins from polyvinyl chloride in incinerating rubbish containing polyvinyl chloride in an incinerator by removing polyvinyl chloride from the rubbish before incineration. SOLUTION: An iron powder is incorporated into a synthetic resin to make it sensitive to magnetic waves so that the synthetic resin product containing an iron powder can be sorted or discriminated from other synthetic resin products containing no iron powder. A substance that reacts with infrared rays, or a heat generating material is incorporated into a synthetic resin product containing a proper amount of an iron powder to make the resin product sensitive to infrared rays so that the resin product can be sorted or discriminated. A substance that reacts with ultraviolet rays, or an ultraviolet sensitive material is incorporated into a synthetic resin product to make it sensitive to ultraviolet rays so that the resin product can be sorted or discriminated.</p> |
