الوصف

Coffee Bag/Coffee bag with valve/ Coffee bag with one way degassing valve/foil bag/coffee packaging bag/standup zipper bag/side gusset bag/aluminum bag/food packing/ Features: Size: *0g, **5g, **7g, **0g, **0g, **4g, **0g, **8g, ***0g, ***0g, ***0g ***** Material & Thickness: PET *2micron + ALU 7micron + PE **0micron Degassing Valve: Switzerland made WIPF valve Zipper: Japanese made zipper , tear notch above zipper Printing: Up to *0 colors with progress printing available Type: Side gusset bag, standup zipper bag, square bottom bag One way degassing valve keep your roasted coffee FRESH!!! Description: Even after coffee is roasted, the beans continue to release CO2 gasses, which if not properly vented can give the coffee a gasses aroma and flavor. Un-vented bags can actually blow up like a balloon after filling with freshly roasted coffee, and the more coffee they hold, the more pressure is generated. Sealed coffee bags which are un-vented, often blow open after being stored due to the pressures caused from the release of the gas. The more oxygen the coffee is exposed to, the faster it loses its aroma and freshness.