伺服杯机器
纸与塑料[编辑]
一个 life cycle inventory of a comparison of paper vs plastic cups shows environmental effects of both with no clear winner.[20]
聚乙烯 (聚乙烯醇) is a petroleum-based coating on paper cups that can slow down the process of biodegrading of the paper it coats.
聚乳酸 (PLA) is a biodegradable bio-plastic coating used on some paper cups. PLA is a renewable resource and is certified compostable, 这意味着当它生物降解时, 它不会留下任何有毒残留物.[21] 尽管PLA衬里的杯子是唯一可以完全堆肥的纸杯, 它们会污染废物流, 据报道导致其他再生塑料无法销售.[22]
All paper cups can only be recycled at a specialised treatment facility regardless of the lining.[23]
A number of cities – including Portland, Oregon — have banned XPS foam cups in take-out and fast food restaurants.[24]
