Disposable paper cold drink cups are paper cups that can hold cold drinks. Cold drinks have a characteristic that they need to be frozen or refrigerated, and the safe use temperature is 0℃-5℃. Decided that the whole paper cup can be waterproof. The material of the cold drink cup is food-grade wood pulp paper+pe film on the inner and outer surfaces. This can effectively prevent wood pulp paper from losing its original stiffness and toughness due to contact with moisture.
In order to achieve the waterproof effect in making paper cups, the inner wall will be coated with a layer of polyethylene waterproof film. Polyethylene is the safest chemical in food processing. However, if the selected materials are not good or the processing technology is not enough, polyethylene may be oxidized into carbonyl compounds during hot melting or coating on paper cups. Carbonyl compounds do not volatilize at room temperature, but may volatilize when hot water is poured into paper cups, so people will smell strange smells.
Extended data:
National standard for disposable paper cups
Patterns cannot be printed in the range of 1 and 15mm at the cup mouth.
The cup mouth is not printed to protect consumers. At present, there is no concept of food-grade ink in China, and there is no printing ink that can be used to contact food. When drinking water, the lips touch the mouth of the cup, and the ink in the printed pattern may be ingested, especially the benzene-containing ink is more harmful to health. At the same time, when the cup is covered, there is a printed pattern on the bottom of the cup, which is easy to rub the color on the inner wall of another cup, so there is no printing on the bottom of the cup.
2. Fluorescent brighteners cannot be artificially added.
In the raw materials for making paper cups, in order to avoid the generation of toxic solvents, national standards stipulate that paper cups should not have peculiar smell and recycled materials should not be used. Additives used in raw materials should comply with the provisions of the implementation standards, and additives such as fluorescent brighteners, industrial paraffin and industrial talcum powder that are not within the scope of GB 9685 shall not be used to produce and process paper cups.
Even the contaminated leftovers in the workshop should not be used for the production and processing of paper cups. All raw materials and additives shall meet the requirements of food packaging grade, and fluorescent brighteners shall not be artificially added. "And encourage the use of water-based ink, ultraviolet curing ink, vegetable oil ink and other energy-saving and environmentally friendly inks to produce paper cups.
In addition, the standard also stipulates the stiffness and breathability of paper cups. The bottom and side of the paper cup should not leak or seep. If the paper cup is too soft, it will not meet the standard. All packaging materials of paper cups should have sufficient tightness and firmness, and the packaging of paper cups should be dustproof, moisture-proof and mildew-proof.
Baidu encyclopedia-disposable paper cups