Custom Printed Plastic Packaging Bags for Coffee with Valve

Coffee bag requirements
1. After the coffee beans are roasted, if they are packaged in a poor-quality coffee bag, the aroma of the coffee will easily volatilize, and it will be easily affected by peculiar smells. Therefore, it is necessary to avoid the loss of aromatic gas from the packaging bag and the absorption of peculiar smell from the outside of the packaging bag during coffee packaging. The coffee bag must have a certain function of exhaust and gas barrier.
2. One-way exhaust, anti-expansion bag: After the coffee is roasted, carbon dioxide will be released.
3. Block the air and prevent oxidation: the oil and aroma components in coffee are easily oxidized when exposed to oxygen.
4. Anti-high temperature: under high temperature, the biochemical reaction and volatilization speed of coffee will be accelerated.

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