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How to identify Block bottom flat zipper bag added recycled material?

Author:plastic bags supplier    Time:16/09/22    Click:

How to identify Block bottom flat zipper bag added recycled material?

 
Block bottom flat zipper bag with flat performance directly affects the quality of food.So, how to choose appropriate packaging, is often a lot of food manufacturers feel headache.General food manufacturers choose bags, often worry about Block bottom bag with old material, lead to the quality of the bags do not pass.So, should we how to distinguish whether the food packaging bags with the old material?Food manufacturers in the choose and buy or build bags, often can make merchants and manufacturers label, whether the food packaging materials production new material.

The first: touch by hand.The packing bag of new material production to be smooth, soft and strong toughness;And old material production the packing bag of surface feels a sense of grain, dry and rough, feel is often harder, poor toughness, easy fracture;

The second: use to see.New material in the production of packaging color clear, do not contain impurities;The old material production the packing bag of sedimentation tend to take a little black color, light transmittance is poor;
The third: the nose to smell.New material production the packing bag of smell may take a little bit of glue flavour, but not bad;And old materials tend to produce the bags with a pungent smell.
With the above several methods, we can distinguish whether most of the bags with the old material.

How to identify Block bottom flat zipper bag added recycled material?

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