Achieving durable wet strength in papers like tissue, food packaging, and specialty grades is essential, but using the wrong wet strength agent-or using it incorrectly-can lead to poor retention, reduced machine runnability, and even compromise paper quality.
FU-02 Wet Strength Agent from Luterra Advanced Materials is a strong cationic, eco-friendly formulation that provides long-lasting water resistance. It is easily absorbed by fibers, improves dry strength by up to 20%, and enhances pulp drainage and filler retention. This guide covers five critical mistakes to avoid when selecting and using a wet strength agent.
Mistake #1: Choosing a Product with Insufficient Compatibility or Stability
An incompatible wet strength agent can cause issues like wire fouling, poor sheet formation, or negative interactions with other additives.
FU-02 features good compatibility and strengthens the firmness of fiber cross-linking. It does not conflict with other pulp additives, ensuring smooth papermaking and less wire fouling. Its strong cationic nature also allows it to act as a retention aid for rosin emulsion and an enhancer for neutral sizing agents, improving overall paper stability.
Mistake #2: Overlooking the Impact on Paper Whiteness and Quality
Some wet strength agents can reduce finished paper whiteness or cause yellowing, which is unacceptable for many grades.
FU-02 is specifically formulated to not reduce finished paper whiteness. It is easily absorbed by fibers, non-toxic and non-irritating, and maintains the brightness and quality of the final product. It is widely suitable for the production of tissue paper, packaging paper, and specialty paper, including food-contact grades.
Mistake #3: Using a Product That Only Improves Wet Strength
While wet strength is the primary goal, some agents offer little else, missing opportunities to improve other paper properties or process efficiency.
FU-02 has an obvious effect on the wet strength of paper and also increases the dry strength by 20%. In addition, it helps improve pulp drainage and papermaking speed, and increases the retention rate of fillers, sizes, and fine fibers-providing multiple benefits beyond just wet strength.
Mistake #4: Not Adjusting for Application Method and Dosage
Incorrect dilution, addition points, or dosage can reduce the efficiency of the wet strength agent and waste chemical.
For optimal results with FU-02:
Dilution: Dilute 3 to 5 times with clean cold water before use, controlling the diluted concentration at 2.5%–4%. Stir evenly after dilution and use it as soon as possible.
Dosage: 0.5% to 1.5% based on oven-dried pulp.
Addition point: Add to the pulp system at a point that ensures good mixing.
Mistake #5: Ignoring Customization Options and Eco-Friendly Alternatives
Not all production lines require the same product. Standard formulations may not address specific process needs or environmental requirements.
FU-02 is available in various solid content grades (12.5%, 15%, 18%, 25%) and low-chlorine eco-friendly options. Free samples and customized compounding services are available to tailor the product to your specific process.
FU-02 Wet Strength Agent: Product Specifications at a Glance
| Parameter | Specification |
|---|---|
| Appearance | Pale yellow or colorless transparent viscous liquid |
| Solid content | 12.5 ± 0.5% (other grades available) |
| Viscosity (25°C) | ≤ 80 mPa·s |
| pH value | 2.0 – 5.0 |
| Charge type | Strong cationic |
| Solubility | Easily soluble in cold water |
Application Scope
FU-02 is widely suitable for:
Tissue paper, food packaging paper, fruit bags
Decorative paper, packaging paper, newsprint
Specialty paper grades requiring wet strength
Tips for Optimal Results
Dilution: 3–5 times with clean cold water; control at 2.5%–4% concentration
Dosage: 0.5%–1.5% based on oven-dried pulp
Storage: Cool, dry, ventilated, away from direct sunlight
Use: Stir after dilution and use as soon as possible
Frequently Asked Questions
Q: Can this wet strength agent be supplied in other solid contents?
A: Yes. Besides the standard 12.5%, 15%, 18% and 25% grades are available. We also provide new low-chlorine eco-friendly options.
Q: Does wet strength agent have other functions besides improving paper wet strength?
A: Yes. This product can act as a retention aid for rosin emulsion, an enhancer for neutral sizing agents, and a modifier for cationic starch to improve overall paper stability.
Q: Will the addition of wet strength agent affect paper whiteness?
A: No. FU-02 will not reduce finished paper whiteness and does not conflict with other pulp additives.
Q: Can I get a sample?
A: Yes. Free samples and customized compounding services are available. Contact us for professional solutions for any production or application problems.
Ready to improve wet strength and overall paper quality?
Contact Luterra Advanced Materials for a free sample and expert consultation. Our technical team can help you optimize your wet strength program and choose the right grade for your specific paper products. [Get Free Quote / Contact Now]
