Abstract: With the popularization of telephone, mobile phone and Internet, the take-away industry and take-away snack box manufacturing enterprises have developed rapidly. There are disposable foamed plastic tableware, PP plastic tableware, paper tableware, degradable tableware and so on in the market. Because some take-away fast food boxes are unqualified in quality, long-term use will do harm to human body. Therefore, it is necessary to identify the QS logo and number and use fast food boxes with high safety factor. To eliminate the pollution of fast food boxes, it is necessary to strengthen the classification and recycling and strengthen the resource treatment. Next, let's learn about the takeaway snack box with Xiaobian. What kinds of common take-away snack boxes are there?
1. Disposable foamed plastic tableware
The main component is polypropylene. Because it has the advantages of heat preservation, pressure resistance and cheapness, it is widely used. However, due to the problem of white pollution, the country banned the use of disposable foamed plastic tableware in 1995, but it was lifted in 2113.
One of the biggest hazards of disposable bubble hair take-away tableware is that when the temperature of food exceeds 65 degrees, it will release toxic substances such as bisphenol A and penetrate into food, and if polypropylene is not completely polymerized in the synthesis process, it will lead to the dissolution of dimer and trimer, which will cause harm to liver and kidney.
2. PP plastic tableware
That is, tableware made of polypropylene. Because polypropylene is resistant to high temperature, its maximum temperature is about 151 degrees, because it is enough for ordinary food, and the most important thing is that polypropylene tableware is transparent and firm, and it is non-toxic and harmless. This is the material used in general, and it is also found on disposable fast food boxes.
3. Paper tableware
Its raw material is mostly wood pulp, and then it is pressed and shaped by stamping tools, and then chemical additives are coated on the surface to prevent water seepage. Paper tableware is also non-toxic and harmless. In some high-end takeaway shops, they usually use this kind of tableware to package food, which looks exquisite. Of course, there are also civilian tableware, such as tableware sometimes used to hold hot and sour powder, beef noodles and so on.
4. Degradable tableware
is also made of plastic, but photosensitizer or starch will be added. This kind of take-away tableware will be decomposed into carbon dioxide and water under the action of microbial enzymes in the natural environment, which will not cause harmful effects on the environment.
which take-away packaging boxes can't be used
1. Avoid using plastic products without "ID cards". The so-called "ID cards" refer to triangular signs at the bottom of plastic products. At present, the take-away snack boxes on the market are mainly 1, 5 and 6, which are generally safe. No.1 and No.6 snack boxes are relatively poor in heat resistance, so they cannot be heated and can not contain high-temperature food. No.5 snack box can withstand the high temperature of about 211℃, and can be heated by microwave oven, and repeated heating will not be a problem.
2. Without QS logo and number, the surface of the lunch box is not smooth, and there are impurities or spots.
3. Generally speaking, transparent disposable plastic lunch boxes are made of pure polypropylene (PP), which has a high safety factor; The brightly colored lunch box may use waste plastic, so the darker the color, the less safe it is.
How to put an end to the pollution of take-away snack boxes
To solve the problem of take-away garbage, we should start from the source and the downstream. We should not only take measures to reduce the generation of take-away garbage, but also strengthen the professional recycling of take-away garbage, vigorously improve the efficiency of using and handling "stock garbage" and strictly control the generation and scale of "incremental garbage".
Strengthening classified recycling and recycling are the main countermeasures to solve the problem of take-away garbage. In March, 2117, the National Development and Reform Commission and the Ministry of Housing and Urban-Rural Development issued the Implementation Plan of Domestic Waste Classification System, which requires that compulsory classification of domestic waste should be implemented in 46 cities nationwide first, and the recycling rate of domestic waste will reach over 35% by the end of 2121. The identification of takeaway garbage is relatively simple, so it can be used as a breakthrough to promote garbage classification management.