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Several major misunderstandings of plastic packaging bags, you need to understand

Editor:浙江比例聚合科技股份有限公司 │ Release Time:2019-09-29 

At present, there are many misunderstandings about the safety and hygiene of plastic packaging bags in society and on the Internet.

I. "Plastic Restriction" and "Plastic Prohibition", why do we still use plastic packaging?

"Plastic limit" means that the country restricts the production and use of plastic shopping bags with a thickness of less than 0.025 mm. Plastic shopping bag refers to the kind of plastic bag with two handles. There are no restrictions on plastic bags without handles, such as bone bags, hook bags, flat bags, roll bags, etc. "Plastic ban" is an administrative regulation that bans all plastic bags or all plastic shopping bags in some provinces.

"Plastic restriction" and "plastic ban" are not for all plastic packaging bags. So far, plastics are still widely used in daily life, with good performance, convenience, cheapness, energy saving and environmental protection materials. Plastic products will only be used more and more, and the scope of use is getting wider and wider.

As for the reasons for "plastic restriction" and "plastic ban", the State Council General Office (2007) No. 72 document made it clear and objective: "At the same time as providing convenience for consumers, plastic shopping bags are not used due to excessive use and recycling. Reasons such as being in place have also caused serious energy waste and environmental pollution. In particular, ultra-thin plastic shopping bags are easily damaged, and most of them are randomly discarded, becoming the main source of 'white pollution.' In fact, people are the main cause of white pollution. the reason.

Second, plastic packaging adds a lot of plasticizers, less plastic?

This is a serious misunderstanding. Among the commonly used plastic packaging, only the soft products of polyvinyl chloride need to add plasticizers (plasticizers), and most plastic packages do not contain plasticizers.

3. Are plasticizers toxic? Can plasticizers cause cancer?

These questions can be answered together: there are many types of plasticizers, which cannot be generalized, some are toxic, some are non-toxic, some are carcinogenic, and some are not. Toxic and carcinogenic, the degree of harm to people is also very different.

From a toxicological point of view, whether a foreign compound can cause toxicity or carcinogenicity to humans generally requires at least three conditions at the same time, and one is indispensable. One is a sufficient dose. What form the compound is in and the physical and chemical properties of this form? Many substances are harmful in one form and harmless in another form. The third is the contact mode of foreign compounds with people. Is it visible, skin contact, inhalation, or Ingestion into the stomach and absorption.

Therefore, if some people say that a foreign compound is toxic or carcinogenic, and he can also tell the relevant conditions of the above three conditions, then what he said is likely to be sidelined and possible, we can go a bit deeper Until approval. If all three conditions are unclear, don't believe it for the time being, don't publicize it, wait until you find out.

Because scientific toxicology is supported by toxicology tests, it is not speculative. As for carcinogenicity, which is more complicated than toxicity assessment, it requires a well-designed population epidemiological survey to determine, and only long-term life-long tests in animal tests are recognized as firm evidence. These investigations and tests are not easy to carry out, so a mutagenicity test can be performed first to make a preliminary estimation of its carcinogenicity. If not even mutagenicity tests have been done, why is it that certain plastics under certain conditions are carcinogenic?

For plastic products used as food packaging, containers, and tools, the raw materials and auxiliaries used by them must be tested to meet the safety and health indicators of relevant national standards. Plastic products that are in close contact with food must be tested for compliance after being produced by the factory. National or industry standard safety and health indicators, such as mineral water buckets, etc. At the same time, the factories that produce them must rectify the hardware facilities and software conditions of the factory according to the industry's production licensing rules, product sampling inspections, and pass the inspection by the quality inspection department to obtain food. Only with a production license can the QS mark be printed on food plastic products; in the future, these enterprises and products will often be subject to supervision and inspection by the quality inspection department. The plastic products with the QS mark in regular production enterprises can be used with confidence.

How can we reduce the harm of plasticizers to people?

1. Strengthen the research and development and promotion of low-toxic, non-toxic new plasticizers, and speed up the process of replacing or eliminating toxic plasticizers.

2. Plastic products for food that require plasticizers must be strictly controlled throughout the entire production process and product quality management. Unqualified products and products with potential safety hazards must not be shipped. To this end, it is necessary to strengthen industry self-discipline, strengthen supervision by law enforcement agencies, and strengthen social and media supervision.

3. As a consumer, it is necessary to recognize the QS logo products of regular manufacturers, not to be cheap.

4. Recognize the correct use of signs for food plastic products. Different plastic products have different usage requirements. There are signs on the bottom of mineral water buckets, mineral water bottles and other products. Paper products are often included in the plastic wrap. In accordance with the material requirements of this plastic product, do not Lashing is safe.