通常所用的塑料并不是一種單一成分，是由許多材料配制而成的高分子聚合物(或稱合成樹脂)，此外為了改進塑料的性能，還要在高分子化合物中添加各種輔助材料，如增塑劑、潤滑劑、穩定劑、著色劑、填料、抗靜電劑等，才能成為性能良好的塑料。

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)構成，食品級塑料袋主要由(聚乙烯也就是PE)構成。有食品專用標志的塑料袋和沒有食品專用標志的塑料袋相差兩五倍。為了降低成本，便宜而沒有質量保證的塑料袋，很受各種飲食小攤檔的歡迎，說不定就有回收材料，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.

濟南塑料袋遇到高溫高油，塑料袋中的鉛等重金屬、塑化劑以及一些不穩定物質，即會溶入食品中，對人體造成危害。便宜的普通聚氯乙烯塑料，在溫度高于50℃時，就會有HC烴類有害氣體緩慢析出，這種氣體對人體健康也是有害的，所以塑料袋不能盛裝溫度在50°度以上的食品。也不能盛裝食物放入微波爐中加熱，加熱易產生致癌物質。

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.

不少麻辣燙、豆腐腦、剛做好的熱饅頭、熱油餅等等早夜宵檔、小吃攤、小店，都喜歡直接用塑料袋打包、盛裝食物，這是不科學和有害的，是應該被監管禁止的行為！如果暫時不能都禁止，我們盡可能堂食，少用塑料袋打包熱的食品！更多相關事項就來我們網站http://www.krakren.com咨詢！

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.krakren.com consulting service