How To Build A Technical Specification Sheet For A Carton Printing Machine

This guide was prepared by a group of packaging industry engineers and is intended for procurement teams, production planners, and technical buyers. It reflects current OEM/ODM and tender practices as of 2025.

A technical specification sheet is the single most important document in any carton printing machine purchase. It aligns procurement teams, engineers, machine builders, and operators around a clear set of expectations before money changes hands or equipment is installed. Without it, even a good machine can fail to meet production needs because "standard performance" means different things to different suppliers.

This guide walks you through the essential sections of a specification sheet for a carton printing machinefrom machine dimensions to automation, testing, and final approval. Use it as a checklist for OEM/ODM discussions, tenders, or internal equipment selection.

Machine Mechanical Data and Substrate Limits

1 Dimensions and Footprint

Start by establishing the physical size of the machine. List the overall length, width, and height, as well as total operating weight. Use a single measurement systemmillimeters for most packaging projectsand add imperial units in parentheses only when suppliers are based in the US or other non-metric regions.

More importantly, state the minimum working footprint. A machine specification sheet should include not just the equipment itself but also:

• Front and rear clearance for feeding and delivery operations
• Space for maintenance doors, roll extraction, and print unit access
• Clearance height for drying tunnels or attached finishing units

A well-written specification also makes a clear distinction between machine dimensions and required installation area, so the engineering team can validate building plans or production line layouts against actual floor space.

Checklist for this section:

2 Board Range and Material Compatibility

The board range defines which substrate the machine can process. At a minimum, specify the following:

• Board type: corrugated cardboard (single/double/triple wall), solid board
• Minimum and maximum sheet size (mm)
• Minimum and maximum board thickness / caliper mm**
• Minimum and maximum board grammage g/m**

Also consider specifying whether the machine must handle pre-printed liner, litho-laminated board, or specialty substrates such as coated or metallized materials.

Print Performance Parameters

This section effectively communicates what printing means for your production. The specification must be precise enough to indicate both the quality level and the productivity you expect.

1 Print Unit Configuration

In typical corrugated printing, the machine is usually a flexographic or rotary printing press. The technical specification should include:

• Number of print/color stations: e.g., 2-unit, 3-unit, or 6+ color flexo press configurations
• Print width and repeat length: the maximum printable area in mm
• Printing technology: flexography (with anilox rollers and sleeve options) or flatbed with UV inks and screen printing

State explicitly how spot/Pantone colors and process colors are achievedwhether by adding a dedicated unit for each color or using a dual-purpose add-on station.

2 Printing Quality and Registration Accuracy

To guarantee that the final printed carton meets customer tolerances, state the expected print resolution (in dpi) and, more importantly, the registration tolerance.

For high-quality automatic production, an acceptable registration accuracy might be:

0.3 mm at normal production speeds, verified with a measured test pattern

Include specifications for:

• Color intensity and consistency across the run
• Ink adhesion (tape test standard, e.g., ASTM D3359 or ISO 2409)
• Fine graphics capabilityminimum line width and dot gain requirements
• Barcode print qualityminimum grade (e.g., ANSI Grade B or better, ISO/IEC 15416 Verifier)

3 Speed Production and Production Capacity

Speed should be expressed in two ways:

• Square meters per hour (m/h)
• Cartons or boxes per hour (pcs/h)

The problem with maximum speed figures is that they are often marketing data rather than real production performance. A good specification must state:

• Rated/maximum speed under standard corrugated conditions
• Sustainable production speed when running typical jobs with frequent changeovers
• Speed stabilityhow consistently the machine holds speed during long runs

Define conditions clearly. If a supplier claims 12,000 sheets/hour, confirm which variables apply: single-color or four-color printing? Is drying required between units? Does the speed include automatic stacking? This avoids extrapolating unrealistic productivity claims.

Drying, Feeding, and Material Handling Systems

1 Board Material Handling Mechanism

The quality of the feeding system sets the maximum production limit. Include the type of feeding mechanism (vacuum feed, friction feed, or suction feed) and specify which board types are possible.

Write specifications about:

• Feeding capacity: maximum stack height in mm
• Mis-fed detection: how multiple sheets or skewed sheets are detected and rejected
• Fully automatic feeding: whether a pallet load system with stack edge alignment is required

For packaging machines intended for future expansion, specify whether a fully automatic feeding section was required on day one or planned as a future upgrade.

2 Drying and Curing Mechanisms

Drying keeps the press line productive and is often the limiting factor in many plants. State the drying system technology:

• Hot-air drying
• Infrared (IR) drying
• UV curing (for UV inks and special coating stages)

Also specify:

• Drying section length (e.g., 2,500 mm drying section after each unit)
• Compatibility with water-based or UV inks
• Residual solvent limits for food packaging applications
• Temperature control range and accuracy

If the machine is intended for food or pharmaceutical packaging, add restrictions on measurable residual solvents and maximum substrate temperature during drying. Reference applicable EU or FDA requirements where relevant.

3 Stacking and Finishing

Finally, specify the delivery and stacking method:

• Single-sheet stacker or continuous stacker
• Pallet accumulator or automatic palletizer
• Maximum stack height (mm) and the ability to transfer to a belt or conveyor for subsequent processes (die-cutting or folder-gluing)

Add available options such as:

• Automatic separator insertion (number of sheets per pack)
• Manual turning stations
• Batch counting and marking for quality control

Automation and Utility Requirements

1 Automation and Control Systems

A complete specification sheet should clearly define the automation level of the machine. Include:

• PLC/CNC control system and type of user interface (HMI/Siemens, B&R, PC-based)
• Automated adjustments: auto anilox roll setting, auto-registration, automatic job pre-sets (recipe management)
• Remote diagnostics: Internet of Things (Industry 4.0), data acquisition, and job memory/recipe storage

For automation planning, mention additional requirements:

• Print-to-print and print-to-cut registration automation
• Predictive maintenance features (recommended for aligning speed and vibration to manufacturing conditions)

A lightweight carton machine may not need automatic registration; too many features only add cost. The specification should clarify which settings are optional and which are required from day one.

2 Electrical Requirements

Include these electrical specifications:

• Main voltage (e.g., 400 V, 3-phase, 50 Hz)
• Installed electrical load (kW)
• Main breaker capacity (A)
• Control voltage (24 V DC or 230 V AC)

If the equipment is planned as part of a fully integrated line, specify the control system compatibility with existing industrial networks (e.g., EtherNet/IP or PROFINET) to prevent integration problems.

3 Utility Requirements

In addition to electricity, include:

• Compressed air: e.g., 7 bar, air consumption in L/min, dry and filtered to 20 m
• Vacuum system: capacity in m/h and negative pressure for feeders and print sections
• Water cooling : for UV lamps or dryersflow rate, inlet/outlet temperature in C

Do not omit any utility requirementthis is a common source of Acronym insights installation delays and cost overruns.

Testing, Standards, and Documentation Requirements

Before the machine is accepted, both parties must agree on what a passing test looks like.

1 Acceptance Testing

The specification sheet must state, for example:

• Sample test board: confirm material type, sheet size, and final test print pattern
• Test checklist: print color accuracy, text and barcode legibility, ink adhesion, print appearance, and contrast drop
• Factory Acceptance Test (FAT): conducted at the supplier's plant
• Site Acceptance Test (SAT): conducted at the installation site

Define the criteria unambiguously so that the supplier's performance can be measured against a clear standard.

2 Documentation Package

The documentation package must include:

• Operator and maintenance manuals
• Spare parts lists
• Wiring schematics and electrical diagrams
• Test certificates (CE, ISO 9001, and any relevant machinery directives)
• Packaging and shipping lists

Specify:

• The accepted language (or bilingual versions)
• Electronic copy format (e.g., searchable PDF)
• A fixed delivery date for all documentation during commissioning

Final Specification Approval Process

A rigorous description is not enoughthe implementation process follows it. The approval process should proceed as follows:

1. Draft: Based on production plans, factory audits, and the requirements covered in the sections above.
2. Bilateral review: The buyer's procurement team and engineers meet with the supplier's technical engineers to explain and confirm each item.
3. Conciliation and deviation list: No manufacturer is identical by defaultexpect converging items where, for example, maximum pressure ratings differ. Prepare a documented amendment (variation) list where individual items are changed or approved.
4. Sign-off: Both parties sign the final specification (indicated as the approved version, with changes tracked). No verbal agreements or informality.
5. Use as acceptance baseline: After a test run, compare measured results against the specification. If any gap appears, the decision path is clear.

In practice, the specification sheet itself becomes the core evaluation tool and the basis for final payment. A machine should be accepted only if it meets the specification, not the marketing brochure.

Final Considerations

A well-written specification sheet performs three tasks:

1. Select the right machine for your production needs
2. Define the requirements the supplier must meet for approval
3. Create a measurable acceptance standard that prevents disputes

Pay close attention to detailsespecially units of measurement, sampling methodology, and production speed definitionsto avoid future conflicts. Whether you are purchasing your first flexographic press, specifying a new drying system, or upgrading an extended line, complete and precise specification requirements will save you time, prevent confusion, and lead you to a production line that truly meets your business goals.

This publication is informational and does not constitute legal, procurement, or warranty advice. Consult your in-house engineering and purchasing teams before drafting or signing agreements.