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Defoamers

Defoamers

When Foam Slows You Down

In paper manufacturing, foam isn't just a byproduct—it is a barrier to production. Whether you are cooking starch, preparing coating colors, or running the size press, uncontrolled surface foamcreates immediate operational hazards.

If you are seeing these issues, you have a foam problem:

  • Reduced Tank Capacity: Are your mixing tanks only 80% full because the top 20% is foam? You are losing valuable batch volume.
  • Production Spills & Housekeeping: Foam spill-over creates slippery floors, wastes expensive raw materials (starch/gum), and requires constant cleaning.
  • Machine Downtime: Excessive foam triggers false level readings in sensors and causes pumps to cavitate (run dry), leading to unscheduled maintenance.
  • Sizing Press Issues: Foam buildup at the nip causes splashing and uneven pickup, disrupting the paper web.

Shalbond DF-62

Shalbond DF-62 is a 65% active, non-silicone powder defoamer designed to deliver immediate "knockdown" power.

While liquid defoamers often struggle to penetrate dense starch foam, DF-62 is engineered to break surface tension instantly upon contact. It targets the foam lamella (the bubble wall), causing it to collapse rapidly, allowing you to reclaim your vessel capacity and keep your plant running clean.

Feature
The Production Floor Benefit
Instant "Knockdown" Effect
Immediate Control: Destroys existing foam heads on contact. Essential for "emergency" dosing when tanks are about to overflow.
Persistent Antifoaming
Long-Lasting: It doesn't just kill current foam; it prevents new foam from generating throughout the pumping and circulation process.
100% Active Powder
Cost Efficiency: You aren't paying for water. A tiny dosage (0.1%- 0.3%) handles massive volumes of foam.
Non-Silicone Chemistry
Safe for Machines: No risk of silicone deposits clogging your felts or causing "slip" issues on the reel.

Where to Use Shalbond DF-62

  • 1. The Starch Kitchen (Primary Application): Cooking cationic or oxidized starch is notorious for generating heavy, stable foam. Shalbond DF-62 allows you to cook at higher speeds and utilize the full volume of your cooker without boiling over.
  • 2. Effluent Treatment Plants (ETP): Paper mill effluent often generates massive foam banks due to organic load. DF-62 breaks this down effectively to prevent environmental discharge issues.
  • 3. Pulp Washing & Screening: Keeps the black liquor and wash water foam-free, ensuring pumps operate at maximum efficiency without air-locking.
  • 4. Coating & Size Press: Ensures the recirculation tanks remain fluid and foam-free, preventing splashes and keeping the viscosity stable.

Technical Specs

  • Form: Free-flowing white powder
  • Nature: Non-Silicone, Fatty Alcohol based
  • pH Stability: Stable across wide pH ranges (ideal for alkaline papermaking)
  • Compatibility: Fully compatible with all Shalbond starch and dextrin products.

Don't Let Foam Limit Your Production.

Keep your tanks full and your floors clean. Add Shalbond DF-62 to your formulation.

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