Recently, some netizens broke the so-called "shocking secret of the tobacco industry," saying that the toxic drug of tobacco lies in the cigarette filter, which triggered a round of hot debates on the Internet.

Recently, an article entitled "Let everyone quit smoking! Net posts are absolutely reliable.” Net posts have been circulating in major forums and online communities. The quote said that a friend in the tobacco production industry disclosed a "secret that has been concealed for ten years." In order to reduce production costs, the domestic tobacco industry used "polypropylene" (a plastic raw material) to replace low-grade cigarettes. Commonly used "acetic fibers." According to net posts, polypropylene itself is non-toxic, but some finely divided filaments that are invisible to the naked eye will be left in the lungs once inhaled and cause harm to the human body. In addition, polypropylene filters need to use a large number of adhesives, thinners, these colloids contain a large number of "benzene", "aromatic hydrocarbons" and other carcinogens.

PP is not a secret filter

In fact, the content of this post is not new. Cigarette filters are highly toxic in the Internet as early as 2009, but they have only recently spread again, causing a new round of attention.

Tiezhong said that the domestic tobacco industry has changed low-grade tobacco and some mid-range cigarette filter materials to reduce costs, and replaced polypropylene acetate with polypropylene, which is the “hidden secret of the tobacco industry”.

In fact, through the Internet search, it was discovered that in 1992, the State Tobacco Monopoly Administration issued the “Notice on the Comprehensive Control of the Production of Polypropylene Filter Materials and Filter Rods”, saying: “The polypropylene filter material for cigarettes has been used since 1988. Since it was successfully developed and put into production, it has made very encouraging progress in a few short years, which has not only eased the contradiction between the supply and demand of tobacco filter media, but also created favorable advantages for the tobacco industry to reduce production costs of cigarette smoke and reduce foreign exchange expenditures. condition."

At that time, the main raw material for the production of cigarette filters in the world was cellulose acetate, but the production of cellulose acetate was limited. According to a paper published in 1990 titled “Polypropylene Filament for Cigarette Filters”, the cigarette filter used in China was used at that time. The fibers are also acetate fibers and all depend on imports. However, in the international market, cellulose acetate is scarce and expensive, and it is unable to expand the supply of goods. “This has prompted many domestic manufacturers to develop and research polypropylene fibers as substitutes for acetate fibers for cigarette filters.”

The article states that it is not just China that uses polypropylene fiber instead of cellulose acetate. Hercules Corporation of the United States established a polypropylene tow factory for cigarette filters; Czechoslovakia used the equipment of the then Federal Republic of Germany to build and put into operation a polypropylene tow device for cigarette filters.

It seems that the use of polypropylene in cigarette filter material is not a "hidden secret for ten years," but an open fact, and even once a widely promoted new technology.

Polypropylene itself is harmless to human body

In response to online rumors, the author contacted tobacco company professionals to inquire, but did not receive a response.

An internal employee working at the tobacco company confirmed to the author that at present, the vast majority of cigarette filters used in China are made of acetate, and only a small amount of low-grade cigarettes still use polypropylene tow.

So polypropylene tow is not poisonous? Dong Jinshi, executive vice president and secretary general of the International Food Packaging Association, said in an interview with the media that polypropylene itself is harmless to the human body. The fast food boxes and plastic cups used today are made of polypropylene; as long as they use food Grade polypropylene is safe from a material standpoint.

Later, on the website of the State Tobacco Monopoly Bureau, the author saw that in 1996, the State Tobacco Monopoly Administration issued the “Provisional Regulations on the Safety Management of Cigarettes with Polypropylene and Plastic Filter Rods”, the performance requirements, production safety, and management of organic solvent adhesives. The safety production operation regulations clearly stipulated, and clearly stated that the adhesive must be non-toxic. Unauthorized adhesive products must not be purchased and used by all companies; in 2005, the State Tobacco Monopoly Administration issued the “National Tobacco Monopoly Bureau to launch crackdown on illegal production”. The notice of the "Work Program for the Operation of Tobacco Polypropylene Filament (Filter Rod)" pointed out that it is necessary to regulate the operating behavior of the production (processing) enterprises of cigarette polypropylene tow (filter rod).

This series of regulations and notices indicate that the state has not banned the production of polypropylene filters.

However, whether or not the filter is poisoned does not seem to be a concern for the majority of smokers.

The author randomly interviewed several customers who bought cigarettes in the tobacco stalls and canteens. Most people said they had not heard of this matter. Mr. Zhou, who has been a few years old, believes that he should only buy big-brand cigarettes or imported cigarettes. It should not be a problem; even if the cigarette filter is really problematic, he cannot stop smoking.

Is the filter itself secret?

As for the truly hidden "secrets", some smoke control people think that it is the filter itself.

Dr. Li Qiang, director of the Tobacco Control Office of the Chinese Center for Disease Control and Prevention, said in an interview with the author: “It is a tobacco company’s lie to reduce the health hazard of cigarettes through filters.”

Li Qiang said that because of the addictive nature of nicotine, smokers tend to increase nicotine intake through some compensatory actions, such as increasing the amount of cigarettes, increasing the number of inhalations per cigarette, and increasing the inhalation depth, which makes the use of filters after the harmful substances No reduction in intake.

"Foreign studies have found that after the cigarettes changed from non-filter cigarettes to filter cigarettes in the last century, the incidence of lung cancer did not decline, which confirmed from another point of view that the filter can not reduce the health hazards of cigarettes." Li Qiang said that tobacco companies can reduce the risk of the filter The publicity will mislead consumers to reduce their concerns about health and hinder the efforts of smokers to quit smoking.

"There have been many recent rumors about online cigarette filters. I'm also concerned about the relevant information." Wu Yiqun, a deputy director of the New Exploration Health Development Research Center, told the author that the tobacco filter was said to have occurred, and the information of the tobacco industry and the general public was extremely great. Asymmetry related. Ordinary consumers are not aware of what exactly is in the cigarettes, and it is not clear what harm these things may be mixed together.

Wu Yiqun believes that the tobacco industry should publish the components of various Chinese herbal medicines such as additives, pigments, and adhesives in tobacco, and specify what the new compounds produced by the public are after burning, and what harmful ingredients they have. On Wu Yiqun’s personal microblog, she also urged the tobacco industry’s technical department to respond to rumors and be responsible for the health of consumers.

Intern Zhang Jialun

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