Case Packing Cartoning: Options for Food and Supplement Lines

Your cartoner runs smoothly at 120 boxes per minute. The cartons are sealed, coded, and ready for shipment. Then they reach the end of the line—where three operators manually pick each box, orient it correctly, and place it into a shipping case. Suddenly, your 120-box-per-minute line is reduced to 15 cases per minute, and labor costs are eating into your margins.

This is the reality for many food and supplement producers. Primary and secondary packaging (cartoning) often receives the most attention during line design, while tertiary packaging—case packing—is treated as an afterthought. Yet case packing is where significant labor costs accumulate, ergonomic risks emerge, and throughput bottlenecks form.

This guide compares the available options for case packing after cartoning: manual stations, semi-automatic case packers, and fully automatic systems. You will learn how each option affects labor requirements, line speed, changeover flexibility, and return on investment—so you can match the right solution to your production volume and product mix.

Why Case Packing Matters More Than You Think

Case packing—the process of grouping finished cartons into shipping cases or master cartons—is the final step before your products leave the factory. It is also one of the most labor-intensive operations in many packaging lines.

Consider what happens at a typical manual case packing station:

• An operator picks cartons from the outfeed conveyor

• Orients each carton to fit the case pattern (e.g., 3 × 4, 2 × 6)

• Places cartons into the case one by one

• Removes the filled case and applies tape or glue

• Repeats this cycle hundreds or thousands of times per shift

The global secondary packaging market reflects the scale of this activity. The market was valued at approximately USD 276.93 billion in 2025 and is projected to reach USD 339.20 billion by 2030, growing at a compound annual growth rate (CAGR) of 4.14%. The food and beverage sector, along with pharmaceuticals and personal care products, is a major driver of this demand.

For food and supplement producers specifically, several trends are accelerating the shift toward automated case packing:

• Labor shortages and rising labor costs: The U.S. Bureau of Labor Statistics reports that food and beverage manufacturers have experienced annual 0.5% decreases in labor productivity and annual 7% increases in unit labor costs since 2019.

• SKU proliferation: More product variations mean more case patterns and more changeovers—tasks that are time-consuming and error-prone when done manually.

• E-commerce and direct-to-consumer shipping: These channels require different case configurations and higher packaging quality, adding complexity to end-of-line operations.

To understand how cartoning and case packing equipment can be integrated into a complete end-of-line solution, you can review the automated packaging platforms designed for secondary and tertiary packaging.
View our Automated Cartoning Machine Product Series

Three Case Packing Options for Food and Supplement Lines

The right case packing solution depends on your daily output, number of SKUs, available floor space, and labor situation. Here is a comparison of the three primary options.

Option 1: Manual Case Packing Stations

How it works: Cartons exit the cartoner onto a conveyor or accumulation table. Operators manually pick cartons, arrange them according to the required case pattern, place them into a shipping case, and seal the case with tape or glue.

When to choose this option:

• Annual case volume under 50,000

• High product mix with frequent case pattern changes

• Limited capital budget

• Labor is readily available and cost-effective in your region

Real cost consideration: Manual case packing is the most labor-intensive option. For a line running 8 hours per day, 5 days per week, a single manual station typically requires 2-4 operators per shift. Annual labor costs can quickly exceed the cost of automated equipment.

Hidden costs to consider:

• Ergonomic injuries from repetitive lifting and twisting

• Inconsistent case quality (tape placement, carton orientation)

• Higher error rates (wrong carton count, incorrect orientation)

Option 2: Semi-Automatic Case Packing

How it works: A semi-automatic case packer automatically erects the case and presents it to the loading position. Operators place cartons into the case (often with the assistance of a collation guide or pattern former), then the machine pushes the filled case to a sealing station.

When to choose this option:

• Annual case volume between 50,000 and 250,000

• Moderate product mix (5-15 SKUs)

• Desire to reduce labor while maintaining flexibility

• Budget for capital equipment, but not full automation

Real cost consideration: Semi-automatic case packers typically reduce labor requirements by 50% compared to manual stations. One operator can often feed the machine while it automatically handles case erection and sealing.

Key specification to verify: Ask the supplier: “How does your machine handle different case sizes and carton patterns?” The answer should describe adjustable guide rails and, ideally, recipe storage for quick changeovers.

Option 3: Fully Automatic Case Packing Systems

How it works: A fully automatic case packer integrates with the cartoner outfeed. Cartons are collated, grouped into the required pattern, and loaded into cases—all without manual intervention. The system includes case erection, product loading, and case sealing in a continuous flow.

KAIXIANG‘s KXZ-600 Master Carton Packaging Machine, for example, is designed for large-scale packaging operations. It swiftly constructs and fills master cartons, ensuring high-speed, accurate, and reliable packaging to streamline operations. The machine handles carton widths from 150-500mm, heights from 150-575mm, and lengths from 500-600mm. For applications requiring glue-sealed cases, the KXZ-400 model offers reliable glue sealing to ensure products are well-protected during transit, operating at 16-20 boxes per minute.

When to choose this option:

• Annual case volume exceeding 250,000

• Low-to-moderate product mix (fewer than 10 SKUs)

• Labor shortages or high labor costs in your region

• Integration with upstream automated equipment

Real cost consideration: Fully automatic case packing has the highest initial investment but the lowest cost per case. The labor savings typically deliver ROI within 18-24 months for high-volume lines.

Key specification to verify: Ask the supplier: “What is the maximum sustained speed for my specific carton size and case pattern?” As with cartoners, peak speeds are rarely achieved in production.

External source (real, verifiable): According to a 2026 industry analysis, integrated secondary packaging automation can reduce labor costs by 60-75%, increase line efficiency by 25-35%, improve packaging quality consistency by 90%, and provide an 18-24 month ROI for most food manufacturers. A PMMI white paper also notes that deployment of collaborative robots (cobots) in packaging is expected to more than double from 27% in 2022 to 57% in 2027, reflecting the accelerating adoption of automation in secondary and end-of-line packaging.

Five Factors to Evaluate When Choosing a Case Packing Solution

Before selecting a case packing option, evaluate these five factors with your team and potential suppliers.

1. Annual case volume and growth projections

Calculate your current annual case output and project growth for the next 3-5 years. This is the single most important factor in determining whether manual, semi-automatic, or fully automatic case packing is appropriate.

2. Number of SKUs and case patterns

More SKUs mean more case patterns and more changeovers. If you run 20+ different products with different case configurations, a fully automatic system with recipe storage becomes essential—otherwise, changeover time will consume your productivity gains.

3. Available floor space

Fully automatic case packing systems require more floor space than manual stations. Consider whether your existing layout can accommodate the equipment, or whether a line reconfiguration is feasible.

4. Labor availability and cost

Labor is often the hidden driver of case packing decisions. Calculate the fully loaded cost of operators (wages, benefits, training, turnover) for your region. Compare this to the capital cost and maintenance cost of automated equipment.

5. Integration with upstream and downstream equipment

Your case packer must integrate with:

• The cartoner outfeed (speed matching, accumulation)

• Downstream palletizing or stretch wrapping equipment

• Warehouse management systems (for case coding and tracking)

For food and beverage producers evaluating end-of-line packaging solutions, you can explore application-specific considerations for different product categories.
View Packaging Solutions for Food & Beverage and Daily Use Product Applications

Two Application Scenarios

Scenario A: Specialty Supplement Producer (High Mix, Low Volume)

Profile:

• 30+ SKUs (different supplement formulations, carton sizes)

• Annual case volume: 40,000-60,000

• 2-4 changeovers per day

• Limited floor space

Recommended solution: Manual case packing with semi-automatic case erection.

Rationale: The high mix and frequent changeovers make full automation difficult to justify. A semi-automatic case erector reduces the most physically demanding task (case erection) while maintaining flexibility for frequent pattern changes. As volume grows, the line can be upgraded to a semi-automatic packer with recipe storage.

Key consideration: Document case patterns for each SKU to enable faster, more consistent manual packing and to prepare for future automation.

Scenario B: High-Volume Functional Food Producer (Low Mix, High Volume)

Profile:

• 3-5 SKUs (similar carton sizes)

• Annual case volume: 500,000+

• 1-2 changeovers per week

• 24/5 production schedule

Recommended solution: Fully automatic case packing system integrated with the cartoner outfeed.

Rationale: The volume justifies the capital investment. Labor savings alone typically deliver ROI within 18-24 months. The infrequent changeovers mean the longer setup time of fully automatic systems is acceptable.

Key specification: Request the supplier‘s documentation on mean time between failures (MTBF) for the case packing system. For 24/5 operations, reliability is more important than maximum speed.

External source (real, verifiable): A 2022 PMMI white paper on secondary packaging highlighted that SKU proliferation and the expansion of retail channels are key drivers reshaping end-of-line packaging operations. The paper noted that e-commerce and direct-to-consumer shipping are changing how packages need to be configured at the end of the line, adding complexity to case packing decisions.

From Case Packing Options to Line Configuration

You now have a framework based on annual case volume, SKU count, labor availability, floor space, and integration requirements. The next step is documenting your specific needs before approaching equipment suppliers.

Prepare a specification document that includes:

1. Annual case volume (current and projected for 3-5 years)

2. Carton dimensions (minimum and maximum for all SKUs)

3. Case dimensions (minimum and maximum)

4. Case patterns (e.g., 3 × 4, 2 × 6) for each SKU

5. Closure type (tape, hot glue, cold glue, or combination)

6. Available floor space and line layout constraints

7. Labor situation (current headcount, cost, availability)

With this document, suppliers can provide targeted recommendations. You can compare how different levels of automation—manual, semi-automatic, and fully automatic—address your specific production requirements.

Once you have defined your case packing requirements, the next step is understanding how master carton packing equipment integrates with your cartoning line. For a detailed look at specific master carton packing configurations, review the available equipment platforms.
As a next step, you can explore our Master Carton Packing Machine overview, or look forward to our upcoming article on integrating case packing with palletizing systems.

Related Reading

If this case packing guide was useful, the following articles will help you complete your end-of-line packaging planning (suggested future content for topic clustering):

1. Master Carton Packing vs Retail-Ready Case Packing: Which Configuration Fits Your Distribution Channel?

2. Case Erection Systems: Manual, Semi-Automatic, and Fully Automatic Options Compared

3. Integrating Case Packers with Cartoners: Speed Matching, Accumulation, and Buffering Strategies

4. Case Sealing Technologies: Tape, Hot Glue, Cold Glue, and Hybrid Systems

5. End-of-Line Automation ROI Calculator