Drying Process
Definition
Removing solvents or moisture from adhesive, affecting quality and efficiency.
Historical Background
1950s: hot-air and infrared drying reduced time from hours to seconds.
Example
Freshly coated tape passes through drying oven. Too fast causes skinning, too slow reduces efficiency.
Formula
Drying Time (s) = f(Adhesive Thickness, Drying Temperature, Air Velocity)
Core Concepts
Phase-change process: solvent transitions from liquid to gas.
Extended Applications
Natural: 24-48h; hot-air: 60-120s; infrared: 10-30s; microwave: 5-15s; vacuum: 30-60s.