近年来,随着人们生活水平的提高,国家经济实力的强大,人们越来越关心食品及包装的卫生与安全,国家也越来越注重环保塑料的使用和塑料的可回收利用。放眼我们的周围环境,对食品包装的需求量日 In recent years, with the improvement of people’s living standards and the strong national economic strength, people are increasingly concerned about the hygiene and safety of food and packaging. Countries are also paying more and more attention to the use of environmentally friendly plastics and the recyclability of plastics. Looking around our environment, the demand for food packaging day