Put the pouch cell into the battery top and side sealing machine for top sealing and side sealing. Put the pouch cell into the top and side sealing machine for top sealing and side sealing.
The temperature of the sealing head is generally about 180℃, and the PP layer of the aluminum laminate film is melted and bonded together. The top sealing area is shown in the figure below.

The top sealing is intended to seal the battery tabs which can melt and bond when heated. When sealing, PP in battery tabs adhesive and PP layer of aluminum laminate film melt and bond, forming an effective sealing structure.

TOB-SFZ-200 Battery heat sealing machine is a compact heating sealer for sealing aluminum-laminated films during pouch cell (polymer Li-Ion cell) case preparation. The sealing is copper in bottom and aluminum and silicone rubber piece on top. So it can be used for both top and side sealing for pouch cell.

TOB-BFZ-340 Battery Secondary Vacuum Heat Sealing Machine is mainly used for pouch cell vacuuming and secondary sealing after electrolyte filling.