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Macklin Tan
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A TIJ printer for food packaging is designed to print variable information (batch code, expiry date, lot number, SKU data and distribution details) directly onto production cartons at the point of manufacture.
The ability to add variable information to cartons eliminates the need to apply pre-printed labels to cartons. It also enables quick decisions in the warehouse based upon legible carton coding. Let’s explore the guide here!
Why Do Production Cartons Need Clear Coding?
Production cartons serve two primary purposes: protecting the product and providing data that will be used by production, quality control, warehouse, and logistics teams.
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Helps Identify Products in the Warehouse
Production line personnel can identify the contents of a carton without having to open each box. The legible carton code produced by a TIJ printer for food packaging allows employees to easily differentiate between flavors, package size, batch number, and storage category at a glance.
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Simplifies Picking and Distribution Processes
The data contained within a carton code provides valuable assistance to employees who are tasked with selecting the correct stock and delivering it to either the end customer, retail outlet, or regional distribution center. Also, legible data eliminates delay and error in shipping.
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Supports Product Traceability
The combination of printed batch, lot, and production numbers allows for tracking cartons back to their respective manufacturing records. In the event of an audit, complaint, or recall, teams can quickly locate affected stock.
What Information Is Commonly Printed on Production Cartons?
The type of information that is printed on production cartons will typically be determined by the requirements of the warehouse and distribution processes. Common fields include:
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Batch Code
A batch code identifies all products manufactured during a single production run.
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Production Date and Expiration Date
These dates assist in monitoring shelf life and implementing FIFO (First In First Out) or FEFO (First Expired First Out) rotation.
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Lot Number
Lot numbers link products to quality records, inspection results, and recall procedures.
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SKU Code or Product Code
SKU (Stock Keeping Unit) or Product Code provides differentiation between variants due to flavor, size, formulation or packaging configuration.
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Distribution Destination Code
This code enables logistics teams to categorize cartons according to region, route, customer or distribution center.
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Carton Contents Information
Manufacturers may choose to print additional information on cartons such as the quantity per unit, product description, type of packaging or special handling instructions.
Common Challenges When Printing Codes on Production Cartons
Even though a TIJ printer for food packaging has the potential to produce high-quality carton codes, there are several issues that may arise if the incorrect cartridge, carton surface, mounting or message layout is utilized.
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Blurry or Low-Quality Codes
Excessive print distance, improper ink selection or unstable motion can result in blurry text and bar codes.
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Font Size That Is Too Small
A carton code may appear readable at eye level adjacent to the conveyor but may become unreadable when cartons are stacked onto pallets.
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Inconsistent Print Position
Cartons moving along the conveyor can lead to inconsistent print positions.
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Ink Bleeding on Porous Cardboard
Porous cardboard surfaces (such as uncoated corrugated board) tend to absorb ink rapidly. This rapid absorption can lead to character expansion and reduced bar code clarity.
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Codes Covered by Labels, Packing Tape, or Carton Folds
Improper placement can result in essential information being obscured by labeling, packing tape or carton folds after the cartons have been sealed.
Below is a detailed comparison:
| Production Factor | What to Check | Risk if Ignored |
| Carton surface | Porous, coated, rough, or smooth | Bleeding or weak adhesion |
| Print contrast | Ink and board colours | Low readability |
| Conveyor stability | Guides, sensors, spacing | Misaligned codes |
| Message layout | Font, lines, barcode size | Crowded output |
| Packing process | Tape, labels, and folds | Hidden codes |
How to Achieve Cleaner and More Readable TIJ Printing on Cartons
A TIJ printer for food packaging is most effective when it is tested at the same time as the actual carton, production speed, and final packing configuration
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Use the Right Cartridge for the Carton Material
Select the appropriate type of ink based on the coating and porosity of the board. Although two cartons appear to be the same, they could react differently.
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Choose a High-Contrast Ink Color
Dark ink works very effectively against white or kraft cartons. However, darker substrates may require a high contrast formulation of ink.
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Select an Appropriate Font Size for Easy Reading
Select the font size that is appropriate for the visual distance in the warehouse rather than just for close examination. Test barcodes and QR codes with on-site scanners.
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Print in an Area That Will Not Be Covered During Packaging
Select an area of the carton that has a flat surface away from tape, seams, labels and folds. Confirming the final orientation prior to commissioning helps avoid extra repositioning.
FAQ TIJ Printer for Food Packaging
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Can TIJ print barcodes and QR codes on cartons?
Yes. When contrast, resolution and carton stability are properly controlled, TIJ printers can create machine readable codes with excellent resolution.
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Can one cartridge print on every carton?
Not always. Coated and uncoated boards may need different ink properties.
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Is sample testing necessary?
Yes. It confirms adhesion, drying, readability, placement, and scanner performance before routine production.
Nevertheless, a well configured TIJ printer for food packaging will produce cleaner carton codes, improve warehouse identification and maintain traceability throughout the whole process.
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