Production:It is made by pure wood pulp paper，add the plastic linner between the paper, cut the right length while make the paper as tube(the tube can be muti-wall), then make one of the block bottom, after this, make the top with valve.
Use: The valve paper sacks are put the bag bottom with valve on the filling machine. After filling the material, it is packed into a square body. The inner valve sacks will use the filling pressure to seal the valve ,also can be sealed with the hot melt glue. the outer valve sacks will be sealed by folding the valve inside.
Apply to:It is mainly used for packing food, animal feed,chemical powder, mineral products other powder granular solid materials so on. It is a popular type of packaging bag which widely used in many lines.
Bottom width: 9-16cm
Printing color: 1-8colors
Shijiazhuang Kangyi Packaging Co.,Ltd.
Tel / Whatsapp: +86 19932126528 (Grace)
Add:Yuanshi Country Industrial Zone, Shijiazhuang City,Hebei Province,China
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