Is polypropylene (PP) a food grade material?
在聚丙烯中并不是所有的聚丙烯都是食品级的，其中涉及到食品行业的聚丙烯材质，才是食品级的。
Not all polypropylene in polypropylene is food grade, and the polypropylene material involved in the food industry is food grade.
食品级聚丙烯材质正常情况及高温情况下不会溶出有害物质，但如果是工业级的聚丙烯，在常温或高温下会溶出有害物质，对人身体健康产生危害，有些用于食品容器时，一遇热会有很强烈的异味。因此食品涉及到使用的聚丙烯，一定要用食品级的，如果使用工业级会对人体产生巨大的伤害。
Food grade polypropylene materials do not dissolve harmful substances under normal and high temperature conditions, but if they are industrial grade polypropylene, harmful substances can dissolve at room temperature or high temperature, posing a threat to human health. Some of them may have a strong odor when used in food containers when exposed to heat. Therefore, when it comes to the use of polypropylene in food, it is necessary to use food grade polypropylene. If industrial grade polypropylene is used, it will cause significant harm to the human body.
聚丙烯是一种性能优良的热塑性合成树脂，为无色半透明的热塑性轻质通用塑料，具有耐化学性、耐热性、电绝缘性、高强度机械性能和良好的高耐磨加工性能等，聚丙烯广泛应用于服装、毛毯等纤维制品、医疗器械、汽车、自行车、零件、输送管道、化工容器等生产，也用于食品、药品包装。
Polypropylene is a high-performance thermoplastic synthetic resin, which is a colorless and translucent thermoplastic lightweight universal plastic. It has chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good high wear resistance processing performance. Polypropylene is widely used in the production of fiber products such as clothing and blankets, medical equipment, automobiles, bicycles, parts, transportation pipelines, chemical containers, and also in food and drug packaging.
