Disposable paper bowls cannot be used for a long time, because in order to achieve the water barrier effect, the inner wall of disposable paper bowls will be coated with a layer of polyethylene water barrier film. Polyethylene is a safe chemical in food processing. However, if the selected materials are not good or the processing technology is not qualified, the polyethylene may be oxidized to carbonyl compounds during hot melting or coating on the paper cup.

羰基化合物在常溫下不易揮發，但在紙杯倒入熱水時，就可能揮發出來，所以人們會聞到有怪味。另外一種隔水物質，蠟，超過40度就會溶于水，長期使用對身體很不利。一些作坊制造的紙杯紙碗看上去潔白干凈，實際上，這是因為添加了熒光增白劑；有些一次性紙碗上，甚能摸得到滑石粉，經常使用這些紙碗，將對人體健康帶來危害。山東一次性餐具批發出售

Carbonyl compounds are not easy to volatilize at room temperature, but they may volatilize when pouring hot water into a paper cup, so people will smell strange smell. Another water repellent, wax, will dissolve in water when it exceeds 40 degrees. Long term use is very harmful to the body. The paper cups and bowls made by some workshops look white and clean. In fact, this is due to the addition of fluorescent brightener; Some disposable paper bowls can even touch talc powder. Frequent use of these paper bowls will do harm to human health. Shandong disposable tableware wholesale sale

所以媽媽們說的吃外賣影響健康是有道理的，并不一定是外賣影響健康，而是盛放外賣的一次性餐具影響健康，所以大家還是盡量的減少使用。

Therefore, it is reasonable for mothers to say that eating takeout affects health. It is not necessarily takeout that affects health, but the disposable tableware containing takeout that affects health. Therefore, we should try to reduce the use as much as possible.

四方形打包盒：密封性能好，適合存放食物，能防止冰箱出現異味，適合存放各種佐料、剩食、剩下的罐頭、水果、蔬菜。便于放在冷藏箱、冷凍箱、微波爐使用，也可以用于其他用途。

Square packing box: with good sealing performance, it is suitable for storing food and preventing peculiar smell in the refrigerator. It is suitable for storing all kinds of condiments, leftover food, leftover cans, fruits and vegetables. It is easy to put in refrigerator, freezer and microwave oven, and can also be used for other purposes.

長方形打包盒：適合存放熏肉、肉類食物。由于有接水板，因此易于存放有水分的食物。大容量長方形保鮮盒適合保存水果、蔬菜和海鮮等。

Rectangular packing box: suitable for storing bacon and meat food. Due to the water receiving plate, it is easy to store food with water. Large capacity rectangular fresh-keeping box is suitable for preserving fruits, vegetables and seafood.

圓形打包盒：適合長期存放各種佐料、水果罐頭、雜糧、堅果、茶等食物，便于放在冷藏箱、冷凍箱、微波爐使用。長圓形設計適合在野游時存放飲料、兒童牛奶和各種雜糧、堅果和茶等。

Round packing box: suitable for long-term storage of various condiments, canned fruits, Cereals, nuts, tea and other foods. It is easy to put in refrigerator, freezer and microwave oven. The oblong design is suitable for storing drinks, children's milk, various cereals, nuts and tea during picnic.

高筒打包盒：適合于存放面條、黃瓜等長條形食品，由于高筒保鮮盒的高度尺寸比一般保鮮盒要高，在加工工藝上對模具尺寸及退模要求高，因而市場上能生產高筒保鮮盒的廠家不多，產品也相對較少。

High barrel packing box: it is suitable for storing long strip foods such as noodles and cucumbers. Because the height size of high barrel fresh-keeping box is higher than that of ordinary fresh-keeping box, and the processing technology has high requirements for mold size and mold withdrawal, there are few manufacturers that can produce high barrel fresh-keeping box in the market, and there are relatively few products.

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