Before choosing operating conditions for low-pressure drying of packaging materials, define the observable material result and the actual load.
For packaging materials, check layer adhesion, shrinkage and post-drying seal performance using stack-centre and edge samples. Use these material checks as the trial objective. Keep initial moisture, layer depth, tray contact and the reference drying cycle comparable.
Map sample-core temperature and chamber absolute-pressure measurements; identify gauge position, channel calibration and the timing of moisture or residue sampling.
Run the actual wet load and align pressure and sample-temperature curves with moisture, solvent residue or constant-mass results; inspect moisture regain after venting.
Investigate differences in heat transfer, vapour load and sampling before revising the cycle. Accept only the tested loading and material endpoint, or document a repeat trial.
Specify absolute pressure and gauge location; a pump ultimate-pressure rating is not the chamber operating pressure with a wet load.
Check sample and tray contact with heated surfaces. Heat transfer changes at low pressure, so the sample core can still be warming after the controller reaches setpoint.
Match pump, seals, cold trap or condenser to the released vapour. A standard vacuum-oven configuration does not establish suitability for flammable solvents.
Determine completion from material endpoints such as residual moisture, solvent residue or constant mass; record sample temperature, operating pressure and moisture regain after venting.
A validation report should identify sensors and calibration, show raw curves and material results, and document deviations and the decision to accept or revise the process.
Candidate models in the current catalogue: ESC-VO1000-T6, ESC-VO125-T6, ESC-VO216-T6, ESC-VO27-T6. These are comparison candidates, subject to the process checks above.
The following specifications apply only to the models listed:
