Flat-bottomed bag, generally refers to the bag bottom is flat and easy to stand bags. The association of flat-bottomed bag, will generally be found for paper bags, but we want to describe the flat-bottomed bag is made of plastic film. 

 Pursuit of ever-changing appearance of the packaging, plastic composite bag in addition to stand-up pouches (stand bags), lateral organ bags, side sealing bag, the foreign consumer goods market, especially its neighbors Japan, a few years ago will pop a new bag type, that is, the bag standing like a box the same stable, the bag on both sides of the organ, the plane, the organ and the bag bottom is the same size bag at the end. 

 With the flat bag making machine bag making machine technology continues to strive to develop, independently developed by China are also available.