The top part of the open bag mouth will be sealed tightly as the bag filling is fulfilled
　　The sealing methods will be done depending on the bag's type (gusseted or non-gusseted),layer's number of the bag, the bag’s composition & the other requirement.
　　The normal methods for sealing the bag mouth are as following description：：
A.firstly folding the bag top & then stitching the folded part (usually for the non-gusseted hags)；　 －－ref.photo1
B.firstly cutting the bag top to make it very flat, then covering the crepe paper over the top & stitching the creped part simuganeously； 　　　　　 　　　　　 　　　　　　　　　 　　　　　　　　　 　　　　　　－－ref.photo2
C.firstly stitching the bag top part, cutting the bag top rim, & then over-taping the glued crepe on the top stitched part & heat-sealing it tightly (usually for the purpose of preventing the dust/powder/debris from slipping in or out of the bag form the stitching holes)；　　　　 　　　　　 　 　　　　　　 　　　　　　 　　　　　　　　 　　　　　　 　－－ref.photo3
D.firstly heat-sealing the outside bag & inner bag together, sealing the inner PP or PE bag tightly while the outside bag shall not be sealed for its higher melting degrees; after that, folding the top of the bag above the inner bag's sealing line, & stitching the folded part simultaneously；　 　　　　　　 　　　　　　 　　　　　　　　 　　　　　 　　 －－ref.photo4
E.heat-sealing the top part of the single layer or multi-layer bag directly (usually for PP. PE bag).　 　－－ref.photo5
F.for craft paper bag with over flap preset glue on the flap's inner surface:firsfiy folding the bag's over flap,& then heat-sealing the glued flap firmly(usu.3 glued layers by 3 heating stages)　 　　　　　　 　　　　　　 　　　　　 －－ref.photo6
Besides the above sealing methods, there are some more bag sealing methods which are omitted herein.If you need any further or more detailed information.
please contact with us & also supply the following data to us so that we could submit as much as suitable & detailed designing or suggestion to you for your reference or choice：
a.bag size (before filling & filled)
b.the bag material(pp woven,craft paper,etc with iuner PE bag or not,with inner lamination or not)and the bag type (gusseted or non-gussetde,etc)
c.weight/bag
d.utility at jobsite
e.space/floor size at jobsite