Sewn bottom bag is also called open sewn bottom bag. It uses special sewing thread, special wrinkled paper or heat sealing paper and other materials to sew the packaging bag at the bottom. Generally, it is m-folded on both sides. All materials are kraft paper or stretch paper, or paper and PE composite. It is fed directly from the top for filling, and the mouth needs to be closed after filling.
Bag making width: 180-705mm
Printing color: 1-8
Bag length: 300-1500mm
Number of material layers: 1-7
Bag width: 70-300mm
M-shaped hem width: 0-200mm
Materials: all kinds of kraft paper, paper plastic composite cloth, lined with plastic film and aluminum film
Valve port: single layer or multi-layer kraft paper, wrinkled paper and plastic film
