Valve bags commonly known as pasted bag, Target material are filled into the bag from its filling spout on the upper or lower bottom. Valve bag requires specialized equipment. Package would form itself into a rectangle during the filling process. Valve bag is very efficient for filling and make it neat and tidy to palletizing.Stable stacking on the pallets makes it safer for transportation.Vavle bag is widely applied to food grade powder ,chemical powder ,fertilizer ,medicine or mineral powder or kernels etc.Also there is large sized valve bag which is widely appied to fumed silica and fine Nami Grade Powder.

Square bottom bag as known as Self open square bottom bag or pasted bottom bag.Bottom is folded to form rectangle and pasted with reinforcement patch to increase its strength.When standing on its bottom, it is not easy to fall. Square bottom bag is environment friendly ,its packaging is solid and easy to palletize. It is widely used in the industry of additives ,chemical powders, animal feeds, plastics granule etc.

Pinch bottom bag is also known as step ended heat adhesive bag or flap heat seal bag,Each ply is cut staggered and get its name by step ended flap. Usually its step ended flap is applied with adhesive for heat sealing. It needs no sewing. There is no pollution and more solid sealing. It prevents material from clotting.Its filling and sealing is very convenient , suitable for automation.Filled bag presents square, neat and environment friendly looks. It is suitable for exportation.

Sewn open-mouth bag ,as known as Sewn open-mouth bag, uses Kraft paper or extensible Kraft paper .its bottom is sewn shut and it contains easy open which makes it easy to unpack.Sewn open mouth bag could compound with PE liner. Its packaging is strong and water and moisture proof. It is suitable for powders in small bulk. It is currently most popular and practical common packaging.