通常所用的塑料并不是一种单一成分，是由许多材料配制而成的高分子聚合物(或称合成树脂)，此外为了改进塑料的性能，还要在高分子化合物中添加各种辅助材料，如增塑剂、润滑剂、稳定剂、着色剂、填料、抗静电剂等，才能成为性能良好的塑料。

The plastic commonly used is not a single component, but a high molecular polymer (or synthetic resin) made of many materials. In addition, in order to improve the performance of plastic, various auxiliary materials such as plasticizer, lubricant, stabilizer, colorant, filler, antistatic agent, etc. should be added to the high molecular compound to become a plastic with good performance.

普通塑料袋主要由(聚氯乙烯，也就是PVC)构成，食品级塑料袋主要由(聚乙烯也就是PE)构成。有食品专用标志的塑料袋和没有食品专用标志的塑料袋相差两五倍。为了降低成本，便宜而没有质量保证的塑料袋，很受各种饮食小摊档的欢迎，说不定就有回收材料，毒害很大。

Ordinary plastic bags are mainly composed of (polyvinyl chloride, also known as PVC), while food grade plastic bags are mainly composed of (polyethylene, also known as PE). The price difference between plastic bags with food specific labels and those without food specific labels is two to five times. In order to reduce costs, cheap plastic bags without quality assurance are very popular among various food stalls, and there may be recycled materials that are highly toxic.

济南塑料袋遇到高温高油，塑料袋中的铅等重金属、塑化剂以及一些不稳定物质，即会溶入食品中，对人体造成危害。便宜的普通聚氯乙烯塑料，在温度高于50℃时，就会有HC烃类有害气体缓慢析出，这种气体对人体健康也是有害的，所以塑料袋不能盛装温度在50°度以上的食品。也不能盛装食物放入微波炉中加热，加热易产生致癌物质。

Jinan plastic bags can dissolve into food and pose a threat to human health when exposed to high temperatures and oils, as well as heavy metals such as lead, plasticizers, and some unstable substances in the bags. Cheap ordinary polyvinyl chloride plastic can slowly release harmful gases such as HC hydrocarbons when the temperature is above 50 ° C, which are also harmful to human health. Therefore, plastic bags cannot hold food with a temperature above 50 ° C. It is also not allowed to put food into microwave oven for heating, which is easy to produce carcinogen.

不少麻辣烫、豆腐脑、刚做好的热馒头、热油饼等等早夜宵档、小吃摊、小店，都喜欢直接用塑料袋打包、盛装食物，这是不科学和有害的，是应该被监管禁止的行为！如果暂时不能都禁止，我们尽可能堂食，少用塑料袋打包热的食品！更多相关事项就来我们网站http://www.scuhtg.com咨询！

Many Spicy Hot Pot, bean curd jelly served with sauce, newly made hot Mantou, hot oil cake, and other morning and night snack stalls, snack stands, and small shops like to directly use plastic bags to pack and contain food. This is unscientific and harmful, and should be prohibited by supervision! If we cannot ban all of them temporarily, we will try our best to eat in person and avoid using plastic bags to pack hot food! For more related matters, come to our website http://www.scuhtg.com consulting service