Three-Piece Steel Cans Adhesive bonding, or cementing, uses a thermoplastic adhesive extruded onto a hot can blank. Being an attractive body-assembly method for not being subjected to thermal processing having full wraparound lithography i.e., three-piece beverage containers, some frozen juice concentrate and paint cans Soldered a can, (solders: 97.5%lead and 2.5%tin) Lead extraction by food products and a potential problem with soldered seams Being no longer permitted for food in North america Welded cans,(strong and eliminate potential lead hazards)
Three-Piece Steel Cans Adhesive bonding, or cementing, uses a thermoplastic adhesive extruded onto a hot can blank. Being an attractive body-assembly method for not being subjected to thermal processing having full wraparound lithography i.e.,three-piece beverage containers ,some frozen juice concentrate and paint cans - Soldered a can, (solders : 97.5% lead and 2.5% tin). Lead extraction by food products and a potential problem with soldered seams Being no longer permitted for food in North America - Welded cans, (strong and eliminate potential lead hazards)
Three-Piece Steel Cans Process:( Notes: Soudronic-the global leader for resistance and laser welding systems and key production systems for the metal packaging industry (3-piece cans, industrial packaging) body sheet-a tube with a slight overlap-passing between electrodes -an electrical current heats and fuses the metal(Figure 5. 4) Welded seam: about 30% thicker than the two base metal sheets Sanitary food cans and bead: to improve resistance to collapse(preventing collapse during pressure differentials encountered during retorting and enables the can to withstand an internal vacuum)
Three-Piece Steel Cans Process: （Notes: Soudronic-the global leader for resistance and laser welding systems and key production systems for the metal packaging industry (3-piece cans, industrial packaging) body sheet - a tube with a slight overlap - passing between electrodes - an electrical current heats and fuses the metal (Figure 5.4). Welded seam: about 30% thicker than the two base metal sheets. - Sanitary food cans and bead: to improve resistance to collapse (preventing collapse during pressure differentials encountered during retorting and enables the can to withstand an internal vacuum)