From the characteristics of the two plastic bags to identify.
The use of old materials made of PE bags features:
The use of old materials made of PE bags are generally in the blown film when adding color, made of film is easy to uneven coloring phenomenon, and this plastic bag is brittle and easy to break, the overall performance of the hand feel poor, darker color, this PE bags low cost, can not be used in food packaging. Usually used for industrial materials or used as daily garbage bags.
Features of plastic bags made of new materials:
The color of plastic bags made of new materials is bright, clean and hygienic, and the weight of the plastic bag is large, smooth texture, no special smell, so it can be used as food packaging bags.