Coding and marking machines are vital in industrial production, packaging, and product identification. They ensure accurate lot numbers, expiration dates, barcodes, and serial codes are applied to products across food & beverage, pharmaceuticals, electronics, and automotive industries.
For these systems to function reliably, they require precise ink circulation and pressure control. Diaphragm liquid pumps play a crucial role in maintaining a steady ink supply, preventing clogs, and ensuring high-quality prints. Without a high-performance ink pump, coding machines can experience ink starvation, inconsistent marking, and frequent downtime, leading to production inefficiencies.
In this article, we’ll explore the importance of diaphragm liquid pumps, how they improve coding reliability, and why they are the preferred choice for modern marking technologies.
How Coding and Marking Machines Work
Coding and marking printers use specialized inks to apply permanent, high-contrast markings onto various surfaces, including plastic, glass, metal, paper, and flexible packaging. The most common printing technologies include:
- Continuous Inkjet (CIJ): Uses a high-pressure pump to continuously circulate ink, allowing for fast, non-contact marking on moving production lines.
- Drop-on-Demand (DOD): Delivers ink only when required, making it suitable for high-resolution printing with lower ink consumption.
- Thermal Inkjet (TIJ): Uses heat to create ink droplets, ideal for small-format, high-precision applications.
Each of these systems requires an accurate and stable ink supply, which is where diaphragm liquid pumps come into play.
Why Diaphragm Liquid Pumps Are Ideal for Coding and Marking Machines
Consistent Ink Flow and Circulation
Ink sedimentation and viscosity fluctuations can lead to poor print quality and clogged nozzles. Diaphragm liquid pumps ensure continuous ink movement, preventing settling and maintaining uniform ink consistency.
Precise Pressure Regulation for Clean and Sharp Marking
Printing precision depends on maintaining stable ink pressure. Fluctuations can cause irregular dot formation, smudging, or incomplete markings. Diaphragm pumps provide accurate pressure control, ensuring each droplet is precisely placed for clear, legible markings.
Compatibility with Different Ink Types
Coding and marking systems use a variety of inks, including solvent-based, water-based, UV-curable, and pigmented inks. Diaphragm pumps with PTFE, FKM, and PVDF materials offer high chemical resistance, ensuring long-term durability and preventing ink contamination or material degradation.
Preventing Air Bubbles and Ink Starvation
Air bubbles in the ink supply line can interrupt ink flow, leading to printing defects. Diaphragm pumps are self-priming, efficiently removing air bubbles and ensuring a steady ink supply to the printhead.
Low Pulsation for Uniform Ink Delivery
Pulsation in ink flow can cause uneven marking, especially in high-speed production lines. Diaphragm pumps are engineered with low-pulsation technology, delivering ink at a steady rate, crucial for CIJ and DOD systems.
Long Lifespan and Low Maintenance
Industrial coding machines run continuously, requiring pumps that can handle 24/7 operation without frequent maintenance. Brushless diaphragm pumps offer lifespans up to 8000 hours, reducing downtime and maintenance costs.
Comparing Diaphragm Liquid Pumps to Other Ink Supply Technologies
| Feature | Diaphragm Liquid Pumps | Peristaltic Pumps | Gear Pumps |
|---|---|---|---|
| Ink Flow Stability | Excellent, low pulsation | Moderate, can fluctuate | High, but needs precise calibration |
| Chemical Resistance | High (PTFE, FKM, PVDF options) | Moderate | Limited |
| Bubble Removal | Self-priming, eliminates air bubbles | No air elimination | May trap air bubbles |
| Maintenance | Low, long lifespan (5000-8000 hours) | Frequent tube replacement | Prone to wear over time |
| Noise Level | Low | Low | High |
| Precision Control | High | Moderate | High |
Diaphragm pumps outperform peristaltic and gear pumps in ink stability, pressure control, and long-term reliability, making them the best choice for coding and marking systems.
Key Considerations When Selecting a Diaphragm Liquid Pump for Coding and Marking
To choose the best ink pump for a coding machine, consider:
Ink Type and Chemical Compatibility
- Water-based inks: Standard diaphragm materials (EPDM, FKM)
- Solvent-based inks: PTFE and PVDF for chemical resistance
- UV-curable inks: Requires heat and corrosion-resistant components
Flow Rate and Pressure Requirements
- Low-volume coding applications: 200-500 mL/min flow rate
- High-speed CIJ applications: 1000-3000 mL/min with pressure up to 1.5 bar
Power Efficiency and Motor Type
- Brush motors: Suitable for intermittent operation
- Brushless motors: Designed for continuous 24/7 use, offering higher efficiency and longer lifespan
Integration and Noise Levels
- Compact lightweight design for easy installation
- Low-noise operation for factory environments
BODENFLO’s Diaphragm Liquid Pumps for Coding and Marking
BODENFLO offers high-precision diaphragm pumps tailored for coding and marking systems, delivering stable ink circulation, precise pressure control, and long-lasting performance.
Featured Models
| Model | Flow Rate | Pressure | Motor Type | Lifespan |
|---|---|---|---|---|
| BD-05T60WB | 280 mL/min | 60 mWg | Brushless | 8000 hours |
| BD-02WB | 350 mL/min | 50 mWg | Brushless | 3000 hours |
| BD-05TF1400WB | 1400 mL/min | 60 mWg | Brushless | 8000 hours |
| BD-05TF3000H4WB | 3000 mL/min | 60 mWg | Brushless | 8000 hours |
These pumps are engineered with low pulsation, chemical resistance, and compact designs, ensuring seamless integration into CIJ, DOD, and UV printing systems.
Why Choose BODENFLO for Coding and Marking Ink Pumps?
With 15+ years of experience, BODENFLO specializes in high-performance diaphragm ink pumps for coding and marking systems. Our pumps are ISO9001-certified, CE & ROHS compliant, and rigorously tested for flow stability, pressure control, and chemical resistance, ensuring long-lasting reliability.
Custom Solutions & Fast Support
We offer customized pump solutions tailored to specific ink types, flow rates, and pressure needs. With a global distribution network, we ensure fast delivery and responsive technical support, minimizing downtime for industrial users.
Cost-Effective & High-Performance
We offer customized pump solutions tailored to specific ink types, flow rates, and pressure needs. With a global distribution network, we ensure fast delivery and responsive technical support, minimizing downtime for industrial users.
Competitive Pricing with Premium Quality
BODENFLO delivers cost-effective ink pump solutions with performance matching top European and American brands. Our pumps feature low maintenance, up to 8000-hour lifespan, and energy-efficient designs, making them ideal for continuous, high-speed printing applications.
Conclusion: The Future of Coding and Marking with Diaphragm Pumps
As coding and marking technology advances, the demand for reliable, high-efficiency ink pumps continues to grow. Diaphragm liquid pumps are the gold standard for ensuring consistent ink supply, precise pressure control, and long-term durability.
With chemical-resistant materials, low maintenance requirements, and superior flow control, BODENFLO’s diaphragm pumps set the industry benchmark for reliable ink supply in industrial coding and marking machines.
📩 Request a Quote (info@bodenpump.com) to find the best ink pump solution for your coding and marking system today! 🚀
