Tuna Canned Production Line

Heavy-Duty Tuna Canned Production Line for Low-Acid Seafood Processing

Controlling histamine formation and achieving absolute hermetic seal integrity are the primary engineering hurdles in commercial marine protein canning. The HSYL-TC150 Turnkey Line manages the complete mechanical transformation from pre-cooked tuna loins to commercially sterile, shelf-stable cans. By synchronizing automatic solid dosing, heated liquid medium injection, and vacuum double seaming, this continuous track minimizes atmospheric exposure, securing mandatory FDA-compliant retort validation for high-risk low-acid outputs.

• Throughput Metric: Sustains a continuous processing speed of 80 to 150 cans per minute (CPM), governed by container geometry and dosing viscosity.
• Utility Efficiency: Operates on a 135 kW total electrical load, supported by precisely regulated 0.6 to 0.8 MPa industrial steam for continuous exhaust and thermal cooking.
• Hygienic Metallurgy: All wetted dosing cylinders, hopper basins, and brine manifolds are machined from SUS316L stainless steel to resist the aggressive chloride corrosion inherent in saltwater fish processing.

Technical Specifications of the HSYL-TC150 Canning Plant

Overcoming Histamine Degradation and Sealing Irregularities

A fragmented canning process introduces thermal latency, allowing bacterial loads to multiply before the sterilization phase. We engineered this line to condense the critical timeline between raw packing and final sealing, specifically targeting the variables that dictate final drained weight and shelf life.

• Precise Volumetric Dosing: The solid filler utilizes telescoping mechanical pistons to compress tuna flakes and chunks into uniform pucks. This action ensures consistent drained weight while preventing severe muscle fiber sheer, keeping the meat texture intact.
• CIP-Ready Liquid Injection: The hot oil and brine dispensers integrate seamlessly with an automated liquid filling machine module, ensuring precise headspace control while allowing rapid thermal flushing between oil and water formulation changeovers.
• High-Vacuum Exhaust Seaming: Rather than relying on prolonged physical heat exhausting, the integrated seamer draws a mechanical vacuum of -0.06 MPa immediately before curling the Easy-Open End (EOE), rapidly eliminating residual oxygen that triggers lipid oxidation in fatty fish.
• Automated Retort Handling: Cans are continuously swept into perforated retort baskets via magnetic track loaders, preventing the core temperature of the fish from dropping into the bacterial danger zone prior to entering the pressure vessels.

Kinematics of the High-Speed Double Seaming Unit

Maintaining an F0 sterilization value requires absolute container integrity. If the double seam fractures during the 121°C retort phase, the entire batch faces rejection. Our sealing unit employs a rotary 4-head mechanical chuck driven by a centralized heavy-duty servo motor. The primary operation utilizes a first-operation roll to interlock the can flange and lid hook, while the secondary titanium-coated roll irons the seam flat against the can body.

A localized sensor array inspects the lid placement before the lifter plate engages. If a lid is missing from the chute, the pneumatic clutch instantly disengages the chuck, preventing raw tuna and oil from fouling the internal gearing and reducing mechanical downtime.

Turnkey Integration for 150 CPM Marine Processing Facilities

Operating at 150 cans per minute demands rigid upstream and downstream synchronization. The 35-meter linear footprint of the HSYL-TC150 includes automated empty can depalletizing, magnetic track washing, and inversion stages long before the container reaches the filler. This ensures zero dust or transport debris enters the food matrix.

Following the retort sterilization and forced-air cooling channels, the cans pass through dual-lane x-ray inspection and inline checkweighers. Any container exhibiting sub-standard vacuum deflection, microscopic leakage, or incorrect weight is pneumatically rejected from the primary track, guaranteeing that only validated products reach the final cartoning and palletizing matrix.

Manufacturing Standards for Low-Acid FDA Compliance

Industrial canning machinery must withstand hyper-saline environments and aggressive thermal shocks on a daily basis. We fabricate the primary chassis from heavy-duty SUS304 steel tubes, while all valves, pumps, and metering cylinders are forged from SUS316L. The electrical panels utilize CE-marked contactors enclosed in IP65-rated cabinets to withstand direct high-pressure chemical washdowns. Our international engineering division provides complete Factory Acceptance Testing (FAT), thermodynamic mapping, and Turnkey Installation and Commissioning (I&C) services to ensure your plant clears local health authority audits upon startup.