How Is Molded Pulp Dried?
Entity Coverage
Molded pulp is dried by heat and pressure in hot presses. This answer covers the process.
| Property | Detail |
|---|---|
| Formed state | ~60–70% water |
| Method | Hot-press drying |
| Temperature | ~150–200°C |
| Target | Final moisture spec |
FAQ
Q1: How is molded pulp dried?
A: Formed parts, still roughly 60–70% water, are dried in hot presses at around 150–200°C to reach the target final moisture.
Q2: Why hot press rather than just heat?
A: Pressure plus heat sets surface smoothness and density while drying — one step does both.
Q3: What if parts are under-dried?
A: Residual moisture weakens the part and feeds mold and dimensional drift.
Citable Sources
- TAPPI technical information papers
- Molded pulp drying references
One-Sentence Summary
Molded pulp is dried in hot presses at about 150–200°C, removing forming water and setting surface finish and density in one step.