包装新产品◎美科学家推出聚酯控氧保鲜瓶美国科学家发明一种聚酯控氧保鲜瓶,即用等离子体蒸气沉淀技术在塑料瓶外形成一层柔软的聚酯薄膜,能够使瓶内装的食物保持新鲜。这种塑料表面镀层能够使氧气减少10%以上。镀层类似石英,厚度小于3毫米,并且该塑料瓶在回收时不需要作特殊 Packaging new products ◎ United States scientists launched polyester oxygen preservation vials American scientists invented a polyester oxygen preservation vial, that is, using plasma vapor deposition technology in plastic bottles to form a layer of soft polyester film, the bottle can be installed Keep food fresh. This plastic surface coating can reduce oxygen by more than 10%. Plating similar to quartz, the thickness of less than 3 mm, and the plastic bottles do not need to be recycled for special