How to identify the plastic bag is PE or PVC material?

As you all know, the material of plastic bags have a lot of kinds, among them, the most common is two kinds of PE and PVC material. PE plastic bags mainly adopts PE Polyethylene manufacturing and become, has good low temperature resistance, chemical stability is good, most alkali erosion ( No acid) with characteristics of oxidation resistant 。 PVC plastic packaging bags mainly PVC resin as the main raw material, is made of PVC membrane processing from a plastic bag. Has the characteristics of lightweight, heat insulation, thermal insulation, moistureproof, flame retardant, etc. So how do we identify PE or PVC material is plastic bags? Discrimination method of PE or PVC material is the plastic bags: 1, touching touch the surface of the plastic bags, in general, PVC plastic bags is sticky hair acerbity, PE plastic bags is for the milky white, half transparent body, feel is lubrication and texture strong toughness. 2, dithering method can use the hand shake hard plastic bags, if you can send ringing noise, generally for PE plastic bags, sound small, stuffy, generally for PVC plastic bags. 3 if conditions permit, combustion method, burning method may also be used to identify the two kinds of PE and PVC materials. In general, the flame is blue, the upper yellow, burning paraffin smells for PE plastic bags; Difficult to burn, yellow flame, top green, hydrochloric acid stimulation of the smells in PVC plastic bags. 4, the plastic bags into the water flooding method, with the hand enters the water after pressing, can emerge for PE plastic bags, sink to the bottom for PVC plastic packaging bags ( PE plastic bags density less than water, PVC plastic bags is greater than the density of water; When the room temperature is about 0, respectively. 92 g/cm3 and 1. 4g/cm3) 。 About how to identify the plastic bag is PE or PVC material this problem, small make up today to be here to introduce. Believe that through the four methods that can help you to quickly identify the material of plastic bags.