HydraBan®: The Economic Water Barrier That Simply Works
HydraBan® is an efficiency engine for your corrugator. High yield, high performance, and low cost.
You don't always need a complex, expensive coating to keep moisture out. Sometimes, you just need a workhorse. In the world of corrugated packaging, not every box needs to survive a submarine dive. Most packaging—from fruit trays to e-commerce delivery boxes—needs reliable, consistent protection against atmospheric humidity and occasional splashes. Enter HydraBan®: the industry standard for functional, cost-effective water repellency.
The Chemistry of Efficiency
HydraBan® is not just another wax alternative. It's a highly engineered, water-based formulation designed specifically for the wet-end of the corrugator or off-line coaters. Its architecture allows it to penetrate the porous network of kraft and testliner papers, bonding with the cellulose fibers rather than just sitting on the surface.
- 100% Repulpable & Recyclable: Unlike traditional wax cascading, boxes treated with HydraBan pass the FBA (Fibre Box Association) repulpability protocols.
- PFAS-Free: Completely free of fluorochemicals, ensuring compliance with current and future global environmental regulations.
Unmatched High Yield and Economics
The true power of HydraBan® lies in its extraordinary dilution stability. It is a highly concentrated formula that loves water and can be diluted significantly while maintaining its functional properties at the application nip.
- Freight and Storage Savings: You are shipping active solids, not water. A single tote of HydraBan concentrate yields multiple totes of ready-to-use coating.
- Lower Applied Cost: Due to its low wet film weight requirements, HydraBan offers one of the lowest costs per square meter in the barrier industry.
Reliable Performance in the Field
Don't let the high dilution rate fool you. Once applied and dried, HydraBan cross-links to form a robust, hydrophobic network.
- Targeted Cobb Values: Consistently achieves Cobb ratings between 20-30 g/m², the statistical sweet spot for most agricultural and industrial transit needs.
- Structural Integrity: By preventing paper from absorbing atmospheric moisture, it safeguards the Box Compression Test (BCT) values even when relative humidity (RH) spikes in transit.
HydraBan® vs. The Competition
When comparing HydraBan against generic acrylic emulsions or legacy starch-based resins, the differences become clear on the production floor:
- Zero Foaming: Formulated with advanced defoamers to run cleanly at high corrugator speeds (up to 300+ m/min) without causing skips or voids.
- No Build-up: It runs clean on applicator rolls and scrapers, drastically reducing the downtime required for mid-shift cleaning compared to sticky acrylics.
- Glueability: Designed to be fully compatible with standard cold-set (starch) and hot-melt adhesives without requiring special surface treatments.
The 80/20 Rule of Barrier Packaging
In packaging engineering, 80% of applications do not require extreme, complex barriers. They need exactly what HydraBan provides: a "good enough" barrier that performs flawlessly without over-engineering the cost.
- Agricultural Produce: Trays for apples, citrus, and stone fruits that face moderate condensation in cold rooms.
- E-commerce: Mailers and boxes that might sit on a wet porch for a few hours.
- Industrial Parts: Outer boxes protecting automotive parts from ambient warehouse moisture.
Customized Series for Specific Needs
The HydraBan portfolio is not a one-size-fits-all product. It has evolved into differentiated series to tackle specific operational challenges:
- HydraBan® 708: The industry standard. Maximum dilution, lowest cost, ideal for general-purpose water resistance.
- HydraBan® 8000 Series: Enhanced with premium release agents to prevent sticking in extreme heat or pressure situations.
- HydraBan® 400 Series: Formulated with higher scuff resistance for boxes that suffer severe friction during transit.
The Implementation Process
Switching to HydraBan is designed to be painless. Coaterex's technical team runs a standardized transition protocol:
- 1. Laboratory Audit: We test your current liners to determine the exact dilution ratio needed to hit your target Cobb.
- 2. Trial Run: On-site support to adjust the applicator roll (anilox) settings and drying temperatures.
- 3. Validation: Operators verify glueability, slip angle, and Cobb directly at the end of the corrugator.
The Bottom Line (ROI)
Implementing HydraBan is rarely a cost increase. When you factor in the elimination of wax disposal fees, the reduction in rejected freight due to crushed boxes, and the extreme yield of the concentrate, HydraBan transforms moisture protection from an expense into a competitive advantage.
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