Manual Packaging in Sardine Lines: a Strategic Decision Based on Flexibility, Quality, and Control

In the fish canning industry, the packaging method is not a minor detail: it defines process efficiency, product presentation and, in many cases, the commercial profitability of the plant. In the case of canned sardines, Gaictech maintains a clear position: manual packing not only remains viable, but is strategically superior in numerous industrial contexts. As a leader in the manufacture of complete lines of machinery for the canning industry, our knowledge and experience allow us to develop and integrate packaging lines for pelagic fish, such as sardines, adapted to different production volumes, container formats and final presentations.

Manual vs Automatic Packaging: Why Choose?

Although Gaictech can integrate automatic systems into its lines if requested by the client, based on our experience we defend and promote manual packaging as the best option for factories that work with sardines and other pelagic fish. What are the key advantages of this method?

Operational flexibility

Sardines are a seasonal fish, and the batches received by the industry vary in size, species, and format throughout the year. Manual packaging allows easy adaptation to this variability, without the need for complex plant adjustments or loss of performance. This adaptability is an advantage for small and medium-sized plants seeking to maintain profitability throughout the year, regardless of catch seasonality.

Visual quality of the final product

In European markets such as the Spanish or Portuguese ones, the final presentation of the product is very important. The consumer is a knowledgeable fish buyer and is often demanding regarding the format and quality of the sardine. Manual packaging ensures a more careful arrangement of the sardines, especially in formats such as the ¼ club, where product aesthetics directly influence the consumer’s perception of quality. In addition, the manual process allows operators to visually inspect each piece before placing it in the can, removing specimens that do not meet aesthetic or quality criteria.

Preparation of value-added presentations

The rise of differentiated presentations (skinless sardines, butterfly cut, fillets, etc.) requires more than simply filling a can: it demands large work areas and lines that allow for careful handling of the product by operators. These processes are not compatible with high-speed automated lines, but rather with circuits designed for delicate work and specialized personnel.

Ergonomics and production control

The designs of manual sardine packaging lines prioritize workstation ergonomics, which translates into better working conditions and, consequently, lower staff turnover. In addition, these lines allow the incorporation of operator productivity control systems, facilitating individual performance analysis and the implementation of continuous improvement or incentive policies, if desired.

Technical limitations of automatic packaging

While automatic packaging machines allow high production volumes to be achieved, their efficiency is compromised outside very specific ranges. This type of line usually operates with a specific sardine size, and adjusting them for other sizes or species implies losses in performance or even technical impossibility compatible with proper product quality.

Manual Handling: a Process Common to the Line

In a sardine line, manual intervention remains crucial at several stages, especially those related to product preparation and cooking logistics.

After manual packaging, the cans are placed into plastic racks for cooking. While this process can be partially automated, the operation of transporting the plastic rack with the cans and inserting it into the continuous cooker remains a manual task, especially in markets such as Europe. In other markets with different cooking methods, there are alternative solutions that offer greater automation, but the quality of the final product is lower and not suitable for all markets.

Likewise, at the outlet of the cooker, another operator manually removes the racks with the cooked cans to continue the process.

In this regard, manual work is deeply rooted in canneries in mature markets. Its contribution to product presentation with greater attention to sensory and visual detail is key to understanding its prevalence.

Conclusion

Manual packaging is not an obsolete solution. On the contrary, in contexts where flexibility, attention to detail, and market adaptation are key, it becomes a competitive tool. At Gaictech, we design our sardine lines with this balance in mind: smart automation where it delivers real value, and manual work where it makes the difference, always aiming to maximize line performance.

If you are interested in our sardine and pelagic fish processing lines, contact our team and we will advise you.