In order to better distinguish between disposable paper […]
In order to better distinguish between disposable paper cups and disposable plastic cups, we now begin with a discussion of whether the two pose a hazard to the human body:
First, disposable cups of raw materials in two ways
One is a cold drink cup: there is a layer of wax on the inside of the paper cup. Perhaps a small amount of paper cups have little absorption of wax by the human body, but very few waxes are not easily digested in the human body and thus adsorb on the stomach wall. it goes without saying.
The other is a hot drink cup: there is a layer of plastic inside the paper cup. Plastic raw materials are recycled polyethylene, and inferior paper cups use recycled polyethylene. During the reprocessing process, cracking changes occur, resulting in many harmful compounds that are more likely to migrate into water during use. Professor Zhang Qinfa, an expert in food packaging materials at the Food College of South China Agricultural University, once pointed out that in order to achieve a water-repellent effect, paper cups will be coated with a polyethylene waterproof membrane on the inner wall. Polyethylene is the safest chemical in food processing. However, if the selected material is not good or the processing process is not closed, the polyethylene may be oxidized to carbonyl compounds during the hot melting or smearing of the paper cup. Carbonyl compounds are not volatile at room temperature, but they may evaporate when paper cups are poured into hot water, so people will smell strange. From a general theoretical analysis, long-term intake of this organic compound must be harmful to the human body.
Second, disposable plastic cup:
1, disposable plastic cups using high-quality polypropylene (PP) as raw materials, plastic thermoformed by gas pressure. PP cup has the advantages of smooth surface, good softness, and high temperature resistance of 120°C. The "Shuangyi” drinking cup adopts a new food grade PP raw material, which is closed by imported automatic production line and passed ISO9001:2000 quality management system certification. Environmental protection requirements to ensure cleanliness. European Air Cup styles, thick and crisp cups, hot and cold, easy access, free use of cup holders, in line with modern office reception requirements and quality of life at home.
2, Cup bottom cup thickening design, so that the cup is better to take, not easy to fall, even if poured into the hot water is not easy to deform, the bottom of the cup with 'dragon' pattern, the bottom of the cup is not easy to reunite together, to extract more easily .
3, there is a need to pay special attention to is made of very times plastic. Some black manufacturers even use disgusting medical waste. In this case, it is absolutely poisonous. The method is yes. One of the differences is that the cups are thin and soft. Not strong enough. The second is that although the pressure is very thin, impurities can sometimes be seen. Third, prices are generally cheap.