TIJ vs CIJ Printers: Which Coding Technology Produces Lower VOC Emissions for Sustainable Manufacturing in Thailand?

Sustainability has become a major focus for manufacturers across Thailand. Whether producing food, beverages, pharmaceuticals, cosmetics, pet food, or industrial products, manufacturers are under increasing pressure to reduce environmental impact while maintaining production efficiency.

One area that is often overlooked is product coding and marking technology.

Every production line requires batch codes, expiry dates, manufacturing dates, lot numbers, barcodes, QR codes, and traceability information. However, not all coding technologies have the same environmental footprint.

Today, many Thai manufacturers are evaluating the environmental impact of Continuous Inkjet (CIJ) and Thermal Inkjet (TIJ) printing systems, particularly regarding Volatile Organic Compound (VOC) emissions.

Understanding VOC emissions can help factories improve workplace safety, reduce environmental impact, and support sustainability initiatives.

What Are VOCs?

VOC stands for Volatile Organic Compounds.

These are organic chemicals that easily evaporate into the atmosphere at room temperature. Many industrial solvents used in printing inks contain VOCs.

High VOC emissions may contribute to:

• Air pollution

• Worker exposure to solvent vapors

• Environmental compliance concerns

• Increased ventilation requirements

• Sustainability reporting challenges

As Thailand continues to strengthen environmental awareness and ESG initiatives, VOC reduction is becoming increasingly important in manufacturing facilities.

Why VOCs Matter in Industrial Coding Applications

Coding and marking equipment operate continuously throughout production shifts.

In many factories, printers run:

• 8 hours per day

• 16 hours per day

• 24 hours per day

Even small differences in ink consumption can create significant differences in VOC emissions over time.

For high-volume manufacturers in Thailand's food, beverage, pharmaceutical, and consumer goods industries, selecting the right coding technology can contribute to long-term sustainability goals.

Understanding Continuous Inkjet (CIJ) Technology

Continuous Inkjet (CIJ) printers generate a continuous stream of electrically charged ink droplets.

Only a small percentage of droplets are actually used for printing.

The remaining droplets are recirculated back into the printer.

Because CIJ inks are solvent-based, evaporation continuously occurs during operation.

To maintain correct ink viscosity, CIJ systems automatically add makeup fluid (solvent) throughout the printing process.

Common CIJ applications include:

• Beverage bottles

• Food packaging

• Plastic containers

• Metal cans

• Flexible packaging

• Wire and cable marking

• Industrial products

Popular CIJ printers in Thailand include the Linx 8900 Series, Linx 8920, Linx 8940, and other industrial coding systems.

Understanding Thermal Inkjet (TIJ) Technology

Thermal Inkjet (TIJ) printers use microscopic heating elements inside a cartridge.

When activated, the heater creates a vapor bubble that ejects a precise ink droplet onto the substrate.

Unlike CIJ technology:

• No ink recirculation is required

• No makeup solvent is required

• No viscosity control system is required

• Less routine maintenance is needed

TIJ technology has become increasingly popular in Thailand for:

• Cartons

• Corrugated boxes

• Labels

• Pouches

• Pharmaceutical packaging

• QR code printing

• GS1 Sunrise 2027 compliance projects

VOC emissions can be estimated using two parameters:

1. Specific Gravity

The density of the ink.

2. VOC Percentage

The percentage of ingredients classified as VOCs.

The formula is:

VOC Weight = Specific Gravity × VOC Percentage

This provides the amount of VOC emitted per milliliter of ink used.

According to industry data, a typical MEK-based CIJ ink may contain approximately 90% VOC content, while makeup fluid can contain nearly 100% VOC content. Certain TIJ solvent-based inks may also contain VOCs, but the total system consumption is often significantly lower because no makeup fluid is required.

Comparing VOC Emissions: TIJ vs CIJ

The most important difference is not simply the VOC content of the ink itself.

The key factor is total fluid consumption.

CIJ systems require:

• Ink

• Makeup fluid

• Continuous solvent replenishment

TIJ systems typically require:

• Ink cartridge only

Industry calculations indicate that printing the same amount of information may require significantly more total solvent consumption in a CIJ system due to makeup usage. This can lead to substantially higher overall VOC emissions when compared with TIJ technology.

Benefits of Lower VOC Emissions

Improved Workplace Environment

Reducing solvent emissions helps create a cleaner production environment.

Sustainability Goals

Many multinational manufacturers operating in Thailand have established ESG targets that include emission reduction programs.

Reduced Consumable Usage

Less solvent consumption often translates into lower operating costs.

Simplified Environmental Reporting

Lower VOC emissions can support environmental reporting initiatives and sustainability audits.

Which Industries in Thailand Benefit Most?

Food and Beverage

Manufacturers printing expiry dates on:

• PET bottles

• Cartons

• Flexible packaging

• Metal cans

Pharmaceutical

High-quality coding requirements combined with environmental compliance objectives.

Cosmetics and Personal Care

Many cosmetic manufacturers are seeking cleaner production technologies.

Pet Food Manufacturing

Thailand's rapidly growing pet food industry increasingly focuses on sustainability and traceability.

Export Manufacturers

International customers often evaluate suppliers based on environmental performance and ESG initiatives.

Choose CIJ When:

• Very high production speeds are required

• Printing on challenging curved surfaces

• Harsh industrial environments

• Extremely small character printing

Choose TIJ When:

• High-resolution codes are required

• QR codes are important

• Maintenance needs must be minimized

• VOC reduction is a priority

• Sustainability initiatives are a key objective

The best solution depends on the production environment, substrate type, line speed, and business objectives.

Future Trends in Thailand's Manufacturing Sector

Thailand's manufacturing industry is moving toward:

• Smart factories

• Digital traceability

• GS1 Sunrise 2027 compliance

• Sustainability reporting

• Carbon reduction initiatives

• ESG compliance

As these trends continue, environmental considerations will increasingly influence coding technology selection.

Many manufacturers are no longer evaluating printers solely on purchase price. They are considering total cost of ownership, maintenance requirements, energy consumption, and environmental impact.

Conclusion

VOC emissions are becoming an increasingly important consideration for manufacturers in Thailand.

While both CIJ and TIJ technologies remain valuable coding solutions, their environmental impact differs significantly due to the way each technology operates.

For manufacturers focused on sustainability, reducing solvent consumption, improving workplace conditions, and supporting ESG initiatives, understanding VOC emissions should be part of the printer selection process.

Before investing in a new coding and marking system, manufacturers should evaluate not only print quality and speed but also long-term environmental performance and total operating costs.

PT Asia provides coding and marking solutions for food, beverage, pharmaceutical, cosmetics, pet food, and industrial manufacturing applications throughout Thailand. Our specialists can help evaluate the most suitable technology based on your production requirements, sustainability goals, and traceability needs.