How to distinguish whether the plastic packaging bag is PE or PVC material?

As we all know, there are many kinds of materials for plastic packaging bags. Among them, the most common materials are PE and PVC. PE plastic packaging bags are mainly made of polyethylene Polyethylene, which has excellent low temperature resistance, good chemical stability, and is resistant to most acid and alkali erosion (not resistant to acids with oxidative properties). PVC plastic packaging bag is mainly made of polyvinyl chloride resin as the main raw material, which is a kind of plastic bag processed with PVC film. It has the characteristics of light weight, heat insulation, heat preservation, moisture resistance and flame retardant. So how do we distinguish whether the plastic packaging bag is made of PE or PVC? The method of distinguishing whether the plastic packaging bag is made of PE or PVC: 1. Touch the surface of the plastic packaging bag. Under normal circumstances, the PVC plastic bag is sticky and astringent. The PE plastic packaging bag is milky white, translucent, smooth to the touch and hard and tough. 2. Shaking method You can shake the plastic packaging bag with your hands. If it can make a crisp sound, it is usually a PE plastic bag. If the sound is small and dull, it is generally a PVC plastic bag. 3. Combustion method If conditions permit, the method of combustion can also be used to identify PE and PVC materials. Generally speaking, the flame is blue, the upper end is yellow, and the one that emits paraffin odor when burning is the PE plastic bag; the one that is difficult to burn, the flame is yellow, the upper end is green, and the pungent odor of hydrochloric acid is the PVC plastic bag. 4. Immerse the plastic packaging bag in water by immersion method. After pressing it into the water by hand, the PE plastic packaging bag that can surface, and the PVC plastic packaging bag that sinks to the bottom of the water (the density of the PE plastic packaging bag is less than that of water, and the PVC plastic packaging bag is The density of the bag is greater than that of water; about 0.92g/cm3 and 1.4g/cm3 respectively at room temperature). As for how to distinguish whether a plastic packaging bag is made of PE or PVC, today I will introduce it to you here. I believe that these four methods can help you quickly identify the material of plastic packaging bags.
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