What Is SAP Volumetric Feeder?
Direct Answer
An SAP volumetric feeder meters superabsorbent polymer granules into the core at an exact, repeatable rate.
Key Takeaways
- An SAP volumetric feeder meters superabsorbent polymer granules into the core at an exact, repeatable rate.
- How it works: A screw or auger driven by a servo delivers a precise volume of SAP per unit length, controlling the core’s SAP grammage and distribution..
- Precise SAP dosing in fluff-SAP cores
- Dosing accuracy directly affects absorbency and cost — SAP is the most expensive core ingredient
How SAP Volumetric Feeder Works
A screw or auger driven by a servo delivers a precise volume of SAP per unit length, controlling the core’s SAP grammage and distribution.
Examples and Applications
- Precise SAP dosing in fluff-SAP cores
- Layered SAP application in premium cores
SAP Volumetric Feeder vs. Related Terms
| Term | What it is | Key difference |
|---|---|---|
| Core forming drum | SAP Volumetric Feeder | The feeder meters SAP; the drum shapes the mixed core |
Limitations and Common Misconceptions
- Dosing accuracy directly affects absorbency and cost — SAP is the most expensive core ingredient
- Consistent distribution prevents gel-blocking hotspots
How is SAP added to a diaper core?
A servo-driven volumetric feeder meters SAP granules at an exact rate onto the core, controlling both absorbency and material cost.
References
- BASF - Superabsorbents (HySorb / SAVIVA), how SAP works — BASF (accessed 2026-08-02)
- JP CIA (industry) - Baby diaper material: key components and their functions — 行业媒体 (accessed 2026-08-02)