What Is High-SFC SAP?
Direct Answer
High-SFC SAP keeps liquid flowing through swollen gel, preventing gel blocking and ensuring the whole core absorbs evenly.
Key Takeaways
- High-SFC SAP keeps liquid flowing through swollen gel, preventing gel blocking and ensuring the whole core absorbs evenly.
- How it works: SFC (saline flow conductivity) measures how easily liquid passes through swollen SAP gel.
- High-SFC SAP prevents gel blocking in composite cores
- Myth: SFC is secondary. Low SFC causes gel blocking that nullifies high capacity
How High-SFC SAP Works
SFC (saline flow conductivity) measures how easily liquid passes through swollen SAP gel. High-SFC grades maintain open channels between gel particles, letting liquid reach the entire core. This prevents gel blocking and surface pooling — critical for ultra-thin cores with heavy SAP loading.
Examples and Applications
- High-SFC SAP prevents gel blocking in composite cores
- Manufacturers specify SFC to ensure even core utilization
High-SFC SAP vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| High-AAP SAP | High-SFC SAP | High-SFC ensures flow through gel; high-AAP ensures retention under pressure |
Limitations and Common Misconceptions
- Myth: SFC is secondary. Low SFC causes gel blocking that nullifies high capacity
- Myth: High capacity implies high SFC. They are independent; high-capacity SAP can have poor flow
What is high-SFC SAP?
SAP engineered so liquid flows through swollen gel, preventing gel blocking and uneven absorption.
Why does SFC matter in thin diapers?
Thin cores pack more SAP — without high SFC, surface gel blocks liquid from reaching the core.
References
- BASF - Superabsorbents (HySorb / SAVIVA), how SAP works — BASF (accessed 2026-08-02)
- Family Cares - The Science of Absorbency: Superabsorbent Polymer in Diapers — 行业媒体 (accessed 2026-08-02)