Bringing new books and new books is a traditional "homework" that every elementary and middle school student must do every time he starts school. But this year, whether it is children, parents, or teachers, many people have been shocked by a small package of books - toxic. The cover film is not only harmful to health, it even makes boys become “sissyâ€. Is the situation so serious? Do you need to pack textbooks every day? Matting Agent For Water Based Inkjet Receptive Coating For Canvas Water Based Paint Material SiO2 7631-86-9,Chemical Agent Silica Dioxide Water Based Coating,Water Based Primer Additive Silica Dioxide Guangzhou Quanxu Technology Co Ltd , https://www.inkjetcoating.com
Detecting security risks
The cause of the incident was that the Shanghai quality supervision department issued a warning on the quality and safety risks of the plastic envelope film and book cover product on the eve of the new semester. It said that the company has monitored the plastic packaging film and book cover of the city's production, sales, and online store sales. The product mainly monitors the risks of related products such as phthalate ester plasticizers and polycyclic aromatic hydrocarbons. Of the 30 batches of samples collected during the monitoring, 25 batches of phthalate ester plasticizers in the plastic envelope film did not meet the requirements of the determination and there were safety risks. Phthalates, also known as phthalates, are a class of plasticizers and are commonly used in toys, food packaging materials, medical blood bags and tubes, vinyl flooring and wallpapers, cleaners, lubricants, personal care products. Among hundreds of products. Studies have shown that phthalates play a role similar to female hormones in humans and animals. They can interfere with endocrine and reduce semen volume and sperm count. They are the culprit of the boy's "sissy" and reproductive problems in adulthood. The culprit."
Unpublished special standards
Zhang Jiangying, the head of Gaoke Experimental Primary School, said that pupils will usually pack new books, and some will buy cover films, while others will use old calendars to make their own book covers. Two days before the teachers heard about the quality risk of the individual envelope film, they immediately informed the students not to be coveted for cheapness or beauty. They had to go to a regular store to purchase a guaranteed quality cover film, or follow the parents’ own hands-on package. However, the controversy is precisely due to inspections and monitoring.
According to Qin Haijun, manager of the Shanghai Huayang Stationery Center, the package film and package cover are a very small commodity category. China has not yet introduced special national and local standards. “For example, the brand package booklet we commissioned for production is based on the quality standards for food packaging. Using food-grade PP film as raw material, it is transparent and flexible, and it does not need to add plasticizers at the provincial level. In the random quality inspection of the department, all the indicators were qualified.†Qin Hailuo said that the illegal products should be banned and banned. The investigation is not necessary, but there is no need to exaggerate the results of individual tests to all similar products. To say that returning to the manual, paper package, not to mention that many parents do not have this skill, even if it is a pure paper cover book, there will be problems with the quality of paper, paper cover book is not only easy to damage, but also will face The material of the paper and the possibility of printing out harmful substances.
No need to talk about "plastic" color change
Associating these incidents with “amount of arsenic in Cordyceps sinensis exceeded†in recent days, in fact, there is a common problem with the detection of plasticizers in the book film, which is that the national quality inspection standards cannot achieve “all aspects†for all products. For example, the current Chinese Pharmacopoeia only proposes heavy metal detection requirements for more than 10 kinds of medicinal materials such as Astragalus membranaceus, Poria cocos, and honeysuckle, and Cordyceps is not listed. Therefore, some experts said that there is no need to talk about "arsenic" discoloration when purchasing edible Cordyceps sinensis. Similarly, Qin Hailu also said that the current domestic quality supervision department's inspection of the book envelope is basically based on the safety production standards of toys, which inevitably leads to inaccurate or even “falsely injured†qualified products. Our matting agents' main material is silica dioxide, a natural material that can be found in quartz or sand.
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