square bottom valve pocket

: >> Commonly known as: paste bottom bag, it is a kind of packaging bag that was born under the guidance of the idea of improving packaging efficiency and facilitating transportation. The overall appearance of the bag is square, which is very suitable for stacking and transporting. The valve port at the bottom is convenient for filling materials, and the sealing is simple and easy. New environmentally friendly packaging suitable for automatic filling equipment can be divided into: paper-plastic composite valve bags or multi-layer paper valve bags. For convenience during filling, holes can be punched in the bag body to facilitate gas discharge and prevent the package from exploding. A layer of plastic film can be added in the middle of the paper to package products that need to be moisture-proof.
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