Good disposable paper cups are harmless to people. Professor Zhang Qinfa, an expert on food packaging materials in Food College of South China Agricultural University, once pointed out that in order to achieve waterproof effect in the production of paper cups, a polyethylene waterproof film will be coated on the inner wall. 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. Generally speaking, long-term intake of this organic compound is definitely harmful to the human body.
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Problems needing attention in paper cup design before printing.
1, try not to make paper cups, and design to use full-page paper cups.
The ink accumulation of the whole paper cup is too heavy, so the paper cup is directly sealed and packaged. Organic compounds emitted by solvent-based ink during drying, isopropanol in alcohol wetting solution and volatile gas of glazing paint are harmful to human health.
2. For the bar near the bottom of the cup, the text design should be increased by 5 mm. 。
Because after the cup is put on the machine, the bottom of the cup must be pressed 5mm to ensure the firmness of the bottom of the cup. However, under the high temperature and high pressure of the machine, it is easy to make the graphics and characters near the bottom of the cup bloom, which affects the appearance.
Baidu encyclopedia-disposable paper cups
Baidu Academic-National Standard for Paper Cups is expected to be officially implemented on June 1 day.
1, soaking orange peel in water can remove the dirt on the cup, leaving a fragrance after cleaning, which is very practical.
2. Crush th