If there are no plastic bags in regular shopping, I believe everyone will find the inconvenience. Now there are a large number of plastic bags in every shopping place. These bags are good or bad, more or less, but they all bring great convenience to people's life. However, in these plastic bags, many people found that some plastic bags have enterprise propaganda slogans and images, and this kind of plastic bag is specially customized.
1. Judge the quality of vest bag from color. Dark colored plastic bags are usually toxic, and the darker the color, the more serious it is. Plastic bags, especially black. However, this method is not 100% accurate. Sometimes it needs to cooperate with other aspects of plastic vest bags to judge.
2. Judge the quality of plastic bags from the hand feel. The surface of the non-toxic vest bag is relatively smooth and feels like waxing; On the contrary, toxic plastic bags do not feel smooth and adhesive.
3. Vibrating vest bag. Grasp the vest bag with two hands and vibrate the vest bag with force. If the announced noise is relatively loud, it indicates that the bag is non-toxic, and be careful if the noise is dull.
4. Plastic self sealing bag, sinking and floating method. Press the plastic bag into the water and let go. What can float naturally is non-toxic, while what cannot float is toxic.
5. Incineration method. The non-toxic plastic bag is flammable. Because of abundant incineration, there will be no wire drawing, but it will melt into teardrop shape quickly. Toxic plastic bags are not easy to burn because they are not burned sufficiently and can even be brushed.
Today, Xiaobian presents you the relevant knowledge about Jinan self sealing pocket. If you have any questions and questions about this article, please call us or leave a message below the website: http://www.jnsuliao.com