PVC bags look at three.
PVC bags in the material aspects of the problem there are three main aspects: thickness problems, color problems and appearance problems.
Thickness problem: If feel thin, mainly is the bag in the production of PVC material when the oil is added more, there is a temperature-related, summer temperature is high, feel will be more soft, will feel thinner. Color problem: PVC bag Transparency can be divided into the general and super-transparent.
Color film in the production process by adding pigments to change the color of the bag, the proportion of different, the color will be adjusted to a certain degree of error. Appearance problem: The big smell of PVC bag, its material composition contains a lot of polyvinyl chloride, there is a certain smell, PVC materials generally have a smell, in the high temperature state will be toxic.