There are many coffee makers who will draw a cup of brewed coffee on their wrappers, which is also a very good idea. As for the material of wholesale coffee packaging bags, there are actually many choices. Nowadays, the materials of wholesale coffee packaging bags on the market generally use food packaging materials. Due to the requirements of anti-oxidation, opaque plastic composite materials and more environmentally friendly kraft paper are generally used. 
The opaque material is mainly used to prevent direct sunlight. The roasted coffee belongs to food. Exposure to sunlight will cause microorganisms to multiply rapidly and affect the quality of coffee.

A sealing strip is also designed at the opening of the wholesale coffee packaging bags, which is used to pull the sealing strip after you tear a bag of coffee, reducing the contact time between the air and the coffee beans. However, after the wholesale coffee packaging bags is opened, it is necessary to enjoy the coffee beans as soon as possible. Although there is a sealing strip, the sealing degree is not as good as that of the unopened state, and the frequent opening of the coffee bag will shorten the tasting period of the coffee.