What are plastic bags made of Good answer trjhrj

Most of the commonly used food plastic bags are made of polyethylene film, which is non-toxic, so it can be used to hold food. There is also a film made of polyvinyl chloride, and polyvinyl chloride itself is not toxic, but the additives added according to the use of the film are often harmful substances to the human body, which has a certain toxicity. Therefore, this kind of film and plastic bags made of this film are not suitable for holding food.

If you want to identify PVC plastic bags and polyethylene plastic bags, you can use the following simple method to identify. China Environmental Label.

Polyethylene film (non-toxic) The film is milky white, translucent (several layers are stacked to observe the obvious), the touch is smoother, as if the surface is coated with a wax layer, shake vigorously, the sound is brittle, flammable in case of fire, the flame is yellow, there is mucus dripping when burning, and there is the smell of candle burning. Polyvinyl chloride film (generally toxic) If there is no coloring, it is transparent, the surface of it is a little sticky to the touch, shakes hard, the sound is low, it is not easy to burn in case of fire, it is extinguished from the flame, and the flame is green.

A look at the PP forum, a lot of PE film information, there are many friends who make PE film, many of them are front-line operators, responsible for technology. There are many types of liquid made of PE particles, including low density, metallocene metallocene, linear type, etc.

Polyethylene. Polystyrene stinks when burned, and polyethylene burns like a candle burning. You can judge by that.

Commonly used are polyethylene (PE), polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), etc.

Plastic, of course, and then you ask what is plastic made of? The answer is a substance extracted from petroleum, which experts call plastic.

1. The plastic bag is made of polyethylene material.

2. Polyethylene (PE), referred to as PE. It is a polymer organic compound formed by the addition of ethylene. Polyethylene is recognized as the best material for food contact in the world.

Non-toxic, tasteless, odorless, in line with food packaging hygiene standards. Polyethylene film, light and transparent, has moisture resistance, oxidation resistance, acid resistance, alkali resistance, air tightness, excellent heat sealability and other properties. It is known as "plastic flowers".

It is the most important material for plastic packaging printing.

3. Whether plastic bags are toxic, in addition to looking at the main raw materials, it is also necessary to see whether the additives are toxic, such as polyvinyl chloride, which itself is not toxic, but some plasticizers should be added during processing and production, and these plasticizers are toxic, so the so-called polyvinyl chloride is toxic.

Plastics are formulated from many materials. Among them, polymer (or synthetic resin) is the main component of plastics, in addition, in order to improve the performance of plastics, it is necessary to add various auxiliary materials to the polymer, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., in order to become plastics with good performance. 1. Synthetic resin 2, filler 3, plasticizer 4, stabilizer 5, colorant 6, lubricant 7

In addition to the above-mentioned additives, flame retardants, foaming agents, antistatic agents, etc. can also be added to plastics to meet different use requirements.

<>1. It is a bag made of polypropylene, polyester, nylon, etc. as the main raw materials.

2. Plastic bags are bags made of plastic (commonly used plastics are polypropylene, polyester, nylon, etc.) as the main raw materials, which are indispensable items in people's daily life and are often used to hold other items. It is widely used because of its advantages of cheapness, extremely light weight, large capacity and easy storage, but it is banned from production and use by some countries because of the shortcomings of extremely long degradation cycle and difficult processing of plastic bags.

3. Since June 1, 2008, China has implemented a plastic restriction order: "In all supermarkets, shopping malls, bazaars and other commodity retail places, the implementation of the paid use of plastic shopping bags per mu system, all of them will not be provided with plastic shopping bags for free, and the production, sales and use of plastic shopping bags with a thickness of less than millimeters will be prohibited nationwide."