Longitudinal welding bags and four welds bags.

The bags have their closure weld in the longitudinal direction. Usually used for large quantities of product. They can be flat or with accordion sides. The bags of four welds called this way because they have 4 longitudinal welds at the ends of the accordions. They can be made with monolayer or laminated films, according to customer specifications and needs. Materials that can be used to manufacture the bags: low density polyethylene (LDPE), linear low density polyethylene (PBDL), polypropylene flat extrusion (CPP), biaxially oriented polypropylene (BOPP), polyester (PET) and biaxially oriented polyamide (OPA ).


Minimum width: 330 mm

Maximum width: 650 mm

Minimum height: 315 mm

Maximum height: 1,050 mm

Minimum thickness (per wall): 70 microns

Maximum thickness (per wall): 200 microns