Disposable paper cups are of variable quality on the market, the hidden trouble.
Some paper cups manufacturers in order to make the cup looks more white, joined the fluorescent whitening agent, the fluorescent substance can make cells mutate, once in the body will be a potential carcinogenic factors.
In order to make the paper cups water effect, production will be in the inner wall coating a layer of polyethylene water film, PE is the most safe food processing chemicals, but if the chosen material is not good, or processing technology does not pass, in the process of polyethylene melt or apply to the paper cups, may for carbonyl compound oxide, and less volatile carbonyl compounds in room temperature, but in the cup into hot water, is likely to evaporate, so people can smell the odor.
While no studies confirm that paper cups on the release of carbonyl compounds what will bring to the human body harm, but from the general theoretical analysis, the long-term intake of this kind of organic compounds, must be harmful to human body.
More worryingly, some inferior paper recycled polyethylene, produces in the process of reprocessing cracking change, produce many harmful compounds, can be more easily to the water in the use of the migration.
Countries banned recycled polyethylene used for food packaging, but because the regeneration polyethylene cheap, some small factory to save costs, still use.
Paper cups in the production in order to achieve waterproof effect, in the inner wall coating a layer of polyethylene waterproof membrane.
Polyethylene is safer chemicals in the food processing, it is difficult to dissolve in water, non-toxic, tasteless.
Less volatile carbonyl compounds in room temperature, but in the cup into hot water, is likely to evaporate, so people can smell has a foul taste.
Of the possible adverse health effects of long-term intake of this kind of organic compounds, and even cancer.
Paper cup national standards of quality, only need to detect microbes, haven't to detect chemicals, because this kind of testing is very complicated to do it, is very difficult.
Some paper cups due to poor quality of the pulp, as figure white product is a lot of to add fluorescent bleaching agent, which have carcinogenic risk.
She suggested, disposable paper cup is not multi-purpose, if use cold water, best to reduce the volatilization of harmful chemicals.