Similar Terms
- Sealed-Loop Extraction
- Recirculating Extraction
- Looped Extraction
- Circulating Solvent Extraction
- Continuous Extraction
Closed-Loop Extraction
The process of closed-loop extraction begins when raw cannabis flower is sprayed with a pressurized solvent (usually butane or propane) which separates the cannabinoid and resin-producing trichomes from the plant. Afterward, what’s left is a layer of sticky resin, which is then purged, dried, and processed into the desired form of concentrate, such as live resin, wax, or shatter.