Abstract
PET container wastes in Japan are rapidly increasing since the establishment of the container waste recycling law. Although most of PET container waste recycling in Japan uses the melt-recycling method, new feedstock recycling methods are expected because the supply of melt-recycled resin will be much greater than the demand of plastic goods made from melt-recycled resin. New physical recycling methods by material compounding will be more important because they will bring new added value. We evaluated these methods from an economics viewpoint by determining the break even point using a profit and loss model. In this model, the amount of PET bottles recycled in ten years is estimated to be about 30∼37kt per year. This model predicts that methods leading to an added value of 40 yen per kg will bring 12 billion yen social benefit per year.
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