Engineered calibration instructions for portable hand-clamp heat sealers. Learn how to achieve airtight seals on heavy-duty aluminum, kraft, and laminate bags.
Expert Insight
"When transitioning a packaging line from tabletop impulse sealers to portable hand-clamp sealers (like the FKR series), operator consistency is key. Tabletop machines control dwell time automatically; handheld clamp sealers rely entirely on manual hand pressure and operator dwell timing."
"Because FKR sealers feature dual heated jaws (top and bottom heating bars), they transfer heat extremely fast. For multi-layer aluminum or paper laminates, I always recommend starting the temperature at 150°C and slowly dialing up. If you see smoking or visual layer distortion, back off by 10°C. Never drag the jaws while clamp pressure is engaged, or you will tear the protective PTFE coating."
Co-Founder & Chief Packaging Engineer
With over 14 years of polytechnic materials science expertise, Ryan Wong helps brands select and calibrate manual and automated heat sealing setups for multi-layer barrier pouches.
To calibrate heat sealing parameters (temperature, pressure, dwell time), check out our comprehensive Pouch Heat Sealing Calibration Guide . To compare structural seal seam styles, see our guide on Fin Seal vs. Lap Seal joints .