Six tips for identifying the quality of food vacuum packaging bags

Food vacuum packaging bag is a type of packaging designed by people in daily life for the convenience of preservation and storage of food. It is a type of film bag that comes into direct contact with food. It must meet the basic requirements of food quality and safety. If the quality of food vacuum packaging bags does not meet the standards, it will inevitably contaminate the food and affect human health. Below, we will introduce six techniques for identifying the quality of food vacuum packaging bags.

1. Submerged method

Put the food vacuum packaging bag into water, press the bag to the bottom of the water with your hand, wait for a while, and the food vacuum packaging bag that can float to the surface is qualified. The food vacuum packaging bag that sinks to the bottom of the water and cannot float is unqualified.

2. Combustion method

Qualified food vacuum packaging bags are prone to burning, and the top of the flame will appear yellow, with some parts appearing blue; Food vacuum packaging bags with substandard quality are not easily flammable and will extinguish upon leaving the source of fire. The bottom of the flame will appear green. After softening, there will be a phenomenon of wire pulling.

3. Eye observation method

The appearance of qualified food vacuum packaging bags is white, transparent or slightly transparent, and the texture is uniform; Unqualified food vacuum packaging bags are mostly colored, even if they are white, their transparency is relatively poor, they are cloudy, their texture is uneven, and there may be small particles.

4. Ear listening technique

Shaking the food vacuum packaging bag vigorously with your hands and making a crisp sound indicates that it is a qualified food vacuum packaging bag; And those with low and muffled sounds are substandard food vacuum packaging bags.

5. Hand touch technique

Rub the surface of food vacuum packaging bags with your hands, and those with qualified quality will feel very smooth; Food vacuum packaging bags with sticky, astringent, and waxy texture are considered unqualified.

6. Nose Smelling Technique

Qualified food vacuum packaging bags have no irritating odors; Those that smell pungent are substandard food vacuum packaging bags.

The above techniques for identifying the quality of food vacuum packaging bags have been compiled by Jinde Packaging. Jinde Packaging has more than 10 years of experience in the production of food vacuum packaging bags and provides one-stop services for food vacuum packaging bag design, printing, lamination, slitting, and bag making. Since its establishment, Jinde Packaging has consistently ranked among the top sellers and is an ideal manufacturer for wholesale and customization of food vacuum packaging bags. Hotline: 15902743510