According to the opening position，Valve pocket can be divided into: upper opening valve pocket, bottom opening valve pocket, upper and bottom opening valve pocket.
Valve bag is one packaging bag type which makes the valve of the top or bottom of bag be inserted in the material filling mouth of valve bag filling machine
The valve pocket has the characteristics of improving packing efficiency, convenient transportation, strong firmness and low damage rate.
Valve bags commonly known as pasted bag, it belongs to environmental protection bag. It is the international popular packaging bag at present which was feeding from the top or bottom valve port……
Valve bags commonly known as pasted bag, Target material are filled into the bag from its filling spout on the upper or lower bottom.