There are some tips for identifying the material of plastic bags

When choosing a manufacturer of customized plastic bags, it is important to find reliable ones and require new raw materials for production, as inferior plastic bags can be quite harmful. As is well known, plastic bags are made of chemical substances, and many processing workshops use recycled materials to reduce production costs. The production of such plastic bags is definitely unqualified. Of course, don't panic. Based on the different materials used, we can distinguish between the two types of plastic bags.

For example, the plastic bags we often see used to package food are made of polyethylene film, which is non-toxic. The disadvantage of this material is that it has insufficient strength, sealing ability, and cannot withstand high temperatures, so it cannot be used for packaging items such as tea leaves and spices.

But there is another type called polyvinyl chloride, which is completely different from the same thing. Although polyvinyl chloride is not toxic, it is often mixed with additives in its use, which can cause great harm to the human body. This type of plastic bag cannot be used for packaging food, and is usually used for raincoats, shoe soles, handbags, and other purposes. So how can we clearly distinguish between two materials?

The method is actually very simple, first of all, the surface characteristics. The surface of polyethylene is milky white, and it feels very smooth to the touch. When shaking, the sound is also relatively clear and crisp. Then during combustion, polyethylene is flammable, with a yellow color and sticky droplets, and the burning odor is very similar to that of a candle.

If PVC customized plastic bags are not mixed with pigments, they are relatively transparent and feel different from polyethylene. They are somewhat sticky and not crisp when shaking, slightly low and not easy to burn. They will extinguish after leaving the flame, and the color of the flame is green, which is significantly different from polyethylene.

If you need to customize plastic bags, choose the appropriate materials according to the actual situation. As long as we pay attention to observation and grasp the quality of plastic bags in daily use, qualified plastic bags are related to our healthy life.

Read recommendations:

Super pouch

bag in box Processing

bag in box wine Vendor

How to define the specifications and dimensions of packaging bags

Sterilization bag-sterilization packaging history.Flexible packaging film roll Packaging