How to identify food vacuum packaging bags?

Food vacuum packaging bags are packaging products that come into direct contact with food and are commonly used in people's daily lives. However, the quality of vacuum packaging bags can affect food safety. So when packaging food at home, it is necessary to choose qualified food vacuum packaging bags. So how to identify food vacuum packaging bags? Jinde Packaging will share with you the identification method of food vacuum packaging bags:

1、 Touch it

It is safe to touch the surface of the vacuum packaging bag with your hand, which is very smooth; Sticky, astringent, and waxy texture should not be used for food packaging.

2、 Listen up

When shaking the vacuum packaging bag vigorously with your hands, a crisp sound indicates that it is a qualified vacuum bag; And those with low and muffled sound are not qualified vacuum bags.

3、 Look at it

Qualified vacuum packaging bags are white, transparent or slightly transparent, with uniform texture; Non qualified vacuum bags are colored or white, but have poor transparency, turbidity, uneven stretching of the plastic surface, and small particles.

4、 Smell it

Qualified vacuum packaging bags are odorless; If there is a pungent odor, it cannot be used for food packaging.

5、 Testing

Put the vacuum bag into the water, press it to the bottom with your hand, wait for a moment, the one that floats to the surface is the safe food vacuum packaging bag, and the one that sinks to the bottom is the unqualified food vacuum bag.

6、 Burn it

Qualified vacuum bags are flammable, with a yellow flame and some areas appearing blue. When burned, they drip like candle tears and have a paraffin odor; Non qualified vacuum bags are not easy to burn and will extinguish immediately upon ignition. The flame is yellow or black, with a green bottom that softens and can be brushed, and a pungent odor can be smelled.

The above testing techniques for the safety of food vacuum packaging bags have been compiled by Jinde Packaging. Jinde Packaging has more than 10 years of rich experience in producing food vacuum packaging bags, with high quality, excellent service, and low prices. It is an ideal wholesale and customized manufacturer of food vacuum packaging bags. Hotline: 15902743510