Plastic bags should be a kind of thing we often see and use in our daily life. Of course, some people think that this kind of plastic bag has certain toxicity, and will not be used if it is bad for human body and food. Then the Jinan plastic bag manufacturer will analyze whether it is toxic and its advantages.
Toxicity identification of plastic bags
Most commonly used food plastic bags are made of polyethylene film, which is non-toxic, so it can be used to hold food. Another kind of film is made of polyvinyl chloride, which is also non-toxic. However, according to the use of the film, the additives added are often harmful to human body and have certain toxicity. Therefore, this kind of film and the plastic bags made of this film are not suitable for containing food. If you want to identify PVC plastic bags and polyethylene plastic bags, you can use the following simple method to identify them.
Polyethylene film (non-toxic): the film is milky white and translucent (especially obvious when several layers are stacked). It feels lubricating. It seems that the surface is coated with wax layer. It shakes hard, and the sound is brittle. It is flammable in case of fire. The flame is yellow, and there is mucus dripping when burning. It also has the smell of candle burning.
PVC film (generally toxic) is transparent if no pigment is added. It feels sticky on the surface, shakes forcefully, and has a low voice. It is difficult to burn in case of fire. It extinguishes immediately after leaving the flame. The flame is green.
Analysis of advantages of plastic bags
(1) Uses of high-pressure polyethylene plastic bags: A. food packaging: cakes, sweets, fried goods, biscuits, milk powder, salt, tea, etc; B. Fiber packaging: shirts, garments, needle cotton products, chemical fiber products; C. Packaging of daily necessities.
(2) Uses of low-pressure polyethylene plastic bags: A. garbage bags, bacteria bags; B. Convenience bags, shopping bags, handbags, vest bags; C. Fresh keeping bag; D. Woven bag and inner bag.
(3) Application of polypropylene plastic bag: mainly used for packaging textiles, needle cotton products, clothing, shirts, etc.
(4) Uses of PVC plastic bags: A. gift bags; B. Luggage bags, needle cotton products packaging bags, cosmetics packaging bags; C. (zipper type) document bag and data bag.
The advantage of plastic bags is that they are cheap and easy to use, which greatly provides convenience for our life. According to different materials, different types of plastic bags also have their own uses in their fields. I have explained it above. I hope to help you. Please come to our website for more information https://www.jnsuliao.com Come on!