Looking at the disposable lunch box market, the “white pollution” disposable foam lunch box that has been lifted has been basically disappeared. The sanitary and environmentally friendly corn starch lunch box is rarely used because of its high price and not resistant to foam, and PP plastic is disposable. The lunch box occupies a large area. How to choose in the face of a dazzling PP lunch box? Are they healthy and environmentally friendly?

First of all, the real PP plastic itself is a healthy and environmentally friendly material. PP is a kind of plastic, the scientific name is polypropylene. It is another excellent resin developed after nylon. It is a linear polymer with high density, no side chain and high crystallinity.

PP has good properties of refractory, oil, weak acid and weak alkali. It has high comprehensive resistance to high creep resistance and stress relaxation, excellent wear resistance, self-lubricity and fatigue resistance. If the cup made of polypropylene is non-toxic, the processing temperature (°C) at the time of manufacture is 180 to 240. Therefore, boiling water and high temperature will not break it down.

According to the survey, the so-called PP plastic disposable lunch boxes on the market are not all true PP materials. The reporter walked into a wholesale plastic lunch box and saw a variety of PP material lunch boxes. After asking about the price gap, the boss gave the explanation. "First, the manufacturers are different. The brand's follow-up is not the price difference of the brand. In addition, some lunch boxes with PP materials are not PP materials or some materials are PP, some use PS or PVC, and some are used, so the price will be different." The boss also said that if you choose the brand you use, the logo is complete, of course, the price is also more expensive.

Faced with a disposable PP box of quality materials, summed up a few easy-to-remember tips. First of all, it can be judged by some senses. For example, if you smell it or not, feel the smoothness and stiffness of the hand. The real PP disposable lunch box is smooth and the box body is firm and odorless. If there is obvious The plastic taste is still very soft and it is not recommended.

Furthermore, the material is burned with an open flame, and the black dust is PVC or PS, while the PP is not.

Finally, if you really don't know how to distinguish, the most direct way is to choose a large-brand, fully-identified disposable lunch box. Look at the bottom of the lunch box with an inverted triangle, which will accurately describe the materials.

I believe that mastering these tips, when using disposable lunch boxes, you can pay more attention to the choice of healthy, environmentally friendly PP material disposable lunch boxes.