Glass Bottle Printing with Continuous Inkjet Technology

As stated above, using an adequate glass bottle printer and ink is paramount for printing on glass. A good printer ensures that the printed text or barcode is legible, as it provides crucial information about the product’s expiration date and other information tied to logistics.

Print speed and precision are incredibly important; however, we mustn’t neglect the significance of ink, which has to be durable to withstand bottling operations, storage, transport, and use by the end user. And if the bottles are reusable, the ink must also be washable, on top of the aforementioned durability.

Printing on glass bottles is usually done using continuous inkjet printers, abbreviated as CIJs. CIJ printers rely on the continuous flow of ink that is pushed through a high-pressure nozzle inside the printhead.

The process breaks down the ink into small droplets, which are then electrostatically charged and deflected onto a substrate. The result is legible, and high-quality print that is achieved at great speeds, making CIJ printers perfect for glass bottle coding in bottling facilities.

A CIJ glass printing machine codes directly onto glass without coming in contact with the surface, and an adjustable throw distance allows the printing machine to accommodate glass surfaces and confined installation spaces.

Modern CIJ systems, like the MK-G Series by KEYENCE, also support multi-line printing and high character speeds. Whether needing to print date codes, batch numbers, barcodes, and DataMatrix symbols, all can be applied in a single pass of the glass printing machine. For dark glass or bottles containing a dark liquid, pigmented inks can provide a strong contrast that keeps information readable.

Automated calendar and counter functions reduce any needed manual input when printing on glass bottles, with print settings and network connectivity allowing rapid message changes throughout shifts and product variations. Overall, CIJ printing helps support traceability without impacting throughput.

Adhesion on glass depends on solvent-based formulas that are designed for non-porous substrates. Water-based inks rely on absorption and are not suitable for direct printing on glass jars and bottles. Solvent systems also have to support rapid surface wetting and controlled film formations to create a durable bond to smooth glass.

Any ink in use must also dry quickly and reliably. If the surface skins over too quickly, trapped solvent can weaken the film, which compromises the traceability of the product. If drying is too slow, codes can smear when bottles come into contact with each other or guide rails.

In beverage and food applications, printed codes are prone to coming in contact with condensation and refrigeration. Inks must be formulated for these environments to help resist moisture penetration and maintain adhesion after a bottle has been pasteurized or sterilized.

High-output bottling facilities can process tens of thousands of containers per hour. At this scale, any minor inconsistencies in droplet control or message management can lead to rework or waste. A glass bottle printer must deliver consistent character formation when traveling at high speeds.

Automation also plays an important role in reliable printing on glass bottles. Centralized message control and counter management reduce any needed operator intervention. Maintenance functions like the automatic nozzle cleaning and internal path monitoring support predictable uptime.

Whether printing on glass bottles for large-scale distribution or needing to apply variable data to specialty glass jars, a well-configured glass printing machine supports accurate and durable coding directly on the container surface.

Some ways industries use glass printing machines are:

• Beverage manufacturers require high-contrast expiration dates and lot numbers that remain readable after refrigeration and handling.
• Food producers often rely on codes that have to endure a retort or a hot-fill process.
• Pharmaceutical and cosmetic companies may require fine character printing on glass jars or small bottles.