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What is the best encoding technology for your GS1-128 barcodes?
Demand for detailed information on boxes and packaging increases

What is the best encoding technology for your GS1-128 barcodes?

The demand for detailed information on cartons and packaging is increasing. This is needed to optimize traceability and increase automation capabilities. GS1-128 is now the preferred barcode standard and is used in supply chains worldwide. But what is the best coding technology for this?

A GS1-128 barcode may look simple, but through the use of application identifiers (AI) it can encode much more information than any other option. This makes these bar codes much more useful when it comes to automated traceability and logistics. More than 100 AI options exist. This allows companies to make choices that best fit their products and requirements. For example, consider the following options: Global Trade Identification Number (GTIN); Global Location Number (GLN); Lot / batch / serial number; Expiration date / sell-by date; Net weight / dimensions; Serial Shipping Container Code (SSCC) ...

In certain circumstances, an inkjet printer can be used to print directly on cartons, saving on labeling costs.

Comply with GS1-128 standards.

Although GS1-128 bar codes offer many advantages, the conditions for their use are more stringent. For example, they require high resolution and strong contrast between the print and the packaging material. In addition, the printing solution must deliver the required ANSI (American National Standard Institute) grade for the type of material and shape required. This has led to an increasing need for robust hardware and software solutions to avoid waste due to misprinted information. Choosing the right coding solution is critical.

Packaging material

Print and apply labeling is the most common option for GS1-128 codes since product surface area is less important when using labels. In keeping with the GS1-128 recommendation to use two labels, there are print and apply labeling systems on the market that print on the front and side without the need for expensive line adjustments. This option works on both curved and uneven surfaces and is the only choice for products packed in shrink and stretch film. The system must be able to guarantee a quality level C (ANSI) or better, with a print quality of 300 dpi. 

Print and apply labels is the most common option for GS1-128 codes since product surface area is less important when using labels.

Inkjet Printer

In certain circumstances, an inkjet printer can be used to print directly on boxes, saving on labeling costs. This is possible if the material is light in color, with a reflectance of 43.3 or higher. Examples include corrugated cardboard made from bamboo or materials with low recycling content. However, systems with liquid inks are unsuitable because they have difficulty meeting the required ANSI class. Solutions with solid inks that can print directly on boxes at a resolution of 200 dpi are needed. The coding technology and inks must be able to guarantee ANSI codes of Class C or better.

Software

In addition to proper coding equipment and consumables, the actual information being coded must also be sound. There are many points in the chain where human error can introduce non-compliant data into the bar code. An end-to-end software solution with built-in GS1-128 parameters will issue an error message if operators try to enter invalid information at any stage of the production process.

A GS1-128 bar code may look simple, but through the use of application identifiers (AI) it can encode much more information than any other option.

Accurate data exchange

Operational efficiency is improved when accurate data exchange is achieved between the ERP and MES systems, while simultaneously validating that coded data meets GS1-128 specifications. The most advanced systems on the market also include automated job set-up and a data signature wizard to prevent invalid entries. This is often supplemented by vision systems to ensure that each product leaves the factory with a compliant bar code.

A one-stop shop for GS1-128 

Markem-Imaje has been helping manufacturers worldwide implement GS1-128 barcode coding solutions for more than a decade. Unlike other vendors that rely on third parties, Markem-Imaje provides both the required hardware and software to support manufacturers with the required changes.    

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