Low paper strength leads to breaks, complaints, and production inefficiency. Whether you're producing containerboard, corrugated paper, or tissue, insufficient dry strength forces you to either compromise quality or increase costs.
FU-01 Dry Strength Agent from Luterra Advanced Materials is an amphoteric liquid that improves fiber bonding across a wide pH range, allowing higher usage of low-cost and recycled fibers. This guide covers five critical mistakes to avoid when selecting and using dry strength agents.
Mistake #1: Treating Dry Strength Agent as a One-Size-Fits-All Solution
Different paper grades require different strength characteristics. Containerboard demands high ring crush strength; tissue paper requires good tensile and folding endurance; yarn tube base paper needs surface strength.
FU-01 effectively increases breaking length, ring crush strength, burst strength, and folding endurance. It strengthens the bonding force between fibers and improves dry physical indexes of finished paper. However, the optimal dosage and application method vary by grade and furnish.
Mistake #2: Overlooking pH Compatibility with Your System
Dry strength agents perform differently across pH ranges. Adding one that is incompatible with your system pH can reduce effectiveness or cause chemical interactions that affect other additives.
FU-01 adapts to a wide pH range and works best at pH 5–7. This broad compatibility makes it suitable for various papermaking processes without negatively affecting sizing and retention systems.
Mistake #3: Using a Product That Interferes with Other Wet-End Chemicals
Some dry strength agents conflict with sizing agents, retention aids, or biocides, causing flocculation, poor formation, or reduced water resistance.
FU-01 will not affect sizing and retention systems, making it a safe choice for complex wet-end chemistry. Its amphoteric ionic nature allows it to work harmoniously with both anionic and cationic additives commonly used in papermaking.
Mistake #4: Not Optimizing Dosage for Cost and Performance
Under-dosing fails to achieve target strength; over-dosing increases cost without proportional benefit and may even harm formation or drainage.
The recommended dosage for FU-01 is 0.5%–2%. Adjust the specific amount properly according to your actual production and pulp ratio. Start at the lower end and increase gradually while monitoring strength development to find the optimal balance.
Mistake #5: Ignoring Proper Dilution and Addition Procedures
Poor dissolution or incorrect addition points reduce efficiency and can cause localized defects in the finished paper.
For optimal results with FU-01:
Dilute this product 10 to 20 times.
Stir evenly and add it to the pulp mixing tank.
It can also be added continuously online via a metering pump.
Filter with an 80–100 mesh screen before use to effectively prevent paper defects.
FU-01 Dry Strength Agent: Product Specifications at a Glance
| Parameter | Specification |
|---|---|
| Appearance | Colorless and transparent liquid |
| Solid content | 15±1% |
| Viscosity | 4000–12000 mPa·s (25°C) |
| Ionic type | Amphoteric |
| pH (1% solution) | 2–6 |
| Water solubility | Easily soluble in cold water |
Application Scope
FU-01 is widely used for various paper types, including:
Containerboard
High-strength corrugated paper
Yarn tube base paper
Tissue paper
Cardboard and specialty paper
It allows higher dosage of low-cost fibers and recycled fibers while maintaining or improving finished paper strength.
Tips for Optimal Results
Recommended dosage: 0.5%–2% based on dry pulp
Dilution: 10–20 times with water before addition
Addition point: Pulp mixing tank or via metering pump online
pH range: Works best at 5–7
Pre-filtration: Use 80–100 mesh screen to prevent defects
Frequently Asked Questions
Q: What strength properties can the dry strength agent improve?
A: It effectively increases breaking length, ring crush strength, burst strength, and folding strength. It strengthens fiber bonding and improves overall dry physical indexes of finished paper.
Q: Is this dry strength agent suitable for waste pulp?
A: Yes. It applies to containerboard, yarn tube paper, cardboard, specialty paper, and cultural paper. It matches common papermaking processes and will not affect sizing and retention systems.
Q: What is the general dosage of dry strength agent?
A: The recommended dosage is 0.5%–2%. Adjust the specific amount according to your actual production conditions and pulp ratio.
Q: Can I get a sample?
A: Yes. Free samples and customized compounding support are available. We provide professional solutions for your production and application problems at any time.
Ready to improve your paper strength without increasing costs?
Contact Luterra Advanced Materials for a free sample and expert technical support. Our team can help you optimize dry strength agent selection and dosage for your specific paper grades and furnish. [Get Free Quote / Contact Now]
