With the improvement of people's quality of life and modern packaging technology, food packaging are increasingly high requirements. In order to reduce grain in storage and transportation, loss of sales process, a new type of multi-layer food packaging Paper Bags, is now in trial use in domestic and export flour, starch product packaging.

This paper packaging compared with ordinary paper bag, its strength increased 1.5 times. The bag structure is reasonable and solid, such as sticking bags trapezoidal arrangement, each layer independent bonding, making it more solid. A bag filled with 25 kg weight stretch of four bags of flour, 1.2 meters high and the free fall of 10, still broken packages. Paper itself is hygroscopic, can absorb the excess moisture in grain, and can effectively prevent environmental moisture Ershi grain moisture. Meanwhile, the paper bag sealing than good. Under the same conditions, extend the shelf life of two months to three months.

Paper outstanding advantage is non-toxic, tasteless, non-polluting, in line with national food hygiene standards. As the paper's printing performance is good, so can the user's requirements, printing graphics text. In this paper into the valve port bag, in the flour quickly filling process is easy, filling 3 times increase in speed, and there is no dust flying, can improve the working environment. In addition, because after filling valve port rectangular bag for easy stacking, not sliding package. Stock only put in the same storage capacity increased by 10% during transport operators are not contaminated clothing.

In view of these many advantages, the industry that promote the use of paper food packaging food packaging is the future replacement of the inevitable, but also the future development trend of food packaging.