[Purpose] It enables small-scale individual treatment by heating and pressurizing waste plastics for a certain period of time while heating and pressurizing them while preventing overheating. Especially, waste produced at home can be easily heated and compacted. A good way to reduce volume and store cleanly. [Structure] Waste plastic, which is a poor conductor of heat, is heated little by little over a certain period of time to a temperature below the fusion temperature and above the softening temperature to reduce the volume under pressure. The plastic bag for disposal can be treated while filling the waste material at once or little by little, and the treated material is half-molded including melting and can be sterilized and kept warm to save energy. In addition, a partially fused product can be obtained by selecting the treatment conditions, which is convenient for storage and transportation including households, and can be easily treated each time a waste is generated, which only cleans and saves the treatment and storage space. Not only that, it also facilitates post-treatment such as transportation, crushing, recycling, thermal decomposition, and combustion. [Selection diagram] Figure 1【目的】廃プラスチックの加熱減容処理に一定時間をかけて過熱を防止しつつ加熱、加圧することにより小規模個別処理を可能にするもので、特に家庭で発生した廃棄物を簡単な加熱圧密で減容し、清潔に保存するに適した方法。【構成】熱の不良導体である廃プラスチックへ少量ずつ一定の時間をかけて融着温度以下軟化温度以上に加熱し、加圧減容する。廃棄用のプラスチック袋に廃棄物を一度にまたは少しずつ充填しながら処理でき、処理したものは溶融することも含め半ば成型され、滅菌保温もでき省エネルギーになる。また、処理条件の選択により部分的に融着したものが得られ、家庭を含む貯蔵、輸送に便利でしかも廃棄物発生の都度容易に処理でき、処理および貯蔵空間の清潔化と節約になるだけでなく、輸送、破砕、再利用、熱分解、燃焼等の後処理をも容易にする。【選択図】図１
