pet塑料可以長期用來裝米、豆這類的食品，首先PET無毒，而且他的耐氣候性都很好單單裝裝米和豆子完全沒有問題。

市面常見的飲料塑料瓶都是PET材質的，屬于安全材料。但是在儲存過程中一定要避免高溫，PET材料的塑料瓶一般可承受溫度最高在100攝氏度，在100攝氏度以下對保存的食品是安全的，超過可能導致有害物質釋放。

聚對苯二甲酸乙二醇酯就是PET，化學式為C10H8O4n，是由對苯二甲酸二甲酯與乙二醇酯交換或以對苯二甲酸與乙二醇酯化先合成對苯二甲酸雙羥乙酯，然后再進行縮聚反應制得。

食品級的PET除了聚合過程中加入的微量催化劑和抗氧化劑以外，不會加入任何其他的助劑。使用過程中也不會發生助劑的遷移和滲出，因此就材料本身而言是安全的。

PET plastic can be used to hold food such as rice and beans for a long time. Firstly, pet is non-toxic, and its weather resistance is very good. There is no problem only holding rice and beans.

The common beverage plastic bottles in the market are made of pet, which belongs to safety materials. However, high temperature must be avoided in the storage process. Generally, plastic bottles made of PET materials can withstand a temperature of up to 100 ° C. below 100 ° C is safe for preserved food, which may lead to the release of harmful substances.

Polyethylene terephthalate is pet, with the chemical formula of c10h8o4n. It is prepared by exchanging dimethyl terephthalate with ethylene glycol or esterification of terephthalate with ethylene glycol to synthesize dihydroxyethyl terephthalate first, and then polycondensation.

Food grade PET will not add any other additives except micro catalysts and antioxidants added in the polymerization process. The migration and exudation of additives will not occur during use, so it is safe for the material itself.