Bag sealed on the four sides. Films are unwound by two reels and then joined along their sides (1) by thermosealing; during this phase the machine seals simultaneously both the bottom and the head of the bag (2), while separating the filled bag (3). The sides and bottom are thermosealed during the filling phase (4), this decreasing production time.

1 Aggregate weighing (sand, gravel, etc…) with belt feeding.
2 Binder weighing (cement, lime, etc…) with screw feeder.
3 Aggregate bagging feed (sand, gravel, etc…) with belt system.
4 Binder bagging feed (cement, lime, etc…) with screw feeder system.
5 Double-content bagging.