Difference between food grade vacuum bag and general vacuum bag

　　For non food grade packaging bags, the main difference from the data composition is the use of additives. If opening agents are added to the data, they cannot be used for food packaging.

　　The brand new materials have no peculiar smell, good feel, even texture and bright color

　　Good heat sealing function, flexibility and high barrier function

　　The error of standard length, width and thickness shall be within the regular error range.

　　The appearance shall be free of defects such as water lines, bubbles, broken tendons, perforations, poor plasticization, fish eye stiffness, etc. that may hinder the use.

　　The degradation function can be divided into biodegradation type, photodegradation type and environmental degradation type according to different degradation types of products. The degradation function reflects the ability of the product to be accepted by the environment after it is used and discarded. If the degradation function is good, the bag will crack, differentiate and degrade by itself under the action of light and microorganisms, eventually becoming debris and accepted by the natural environment; If the degradation is not good, it will not be accepted by the environment, and then "white pollution" will be formed.

　　The physical and mechanical functions include tensile strength and cracking elongation, which reflect the ability of the product to be stretched in the process of application. If this discrepancy is assumed, the food packaging bag will be easily cracked and damaged in the process of application.

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