Full Perimeter Seal Spiral High Speed Door for Temperature Zone Containment and Air Exchange Reduction

This Spiral High Speed Door is specified for boundaries between zones that must not mix air: chilled and ambient, clean and general production, conditioned and open warehouse. The door combines a rigid insulated leaf with a full perimeter seal, so when it is closed the opening behaves as a sealed wall rather than a hole with a sheet in front of it. Air leakage is limited at every route: rails, panel joints, floor line and spiral housing entry.

Short cycle time does the rest. At 1.0–1.5 m/s opening speed the doorway is only open for a few seconds per passage, which is the single largest factor in real air exchange through a doorway.

• Full perimeter seal — side brushes, joint gasket, top seal and bottom flap close the doorway as a system.
• Insulated rigid leaf — 43 mm aluminum PU foamed panel, 0.7 mm skin, about 0.51 W/(m²·K) indicative U-value.
• Fast cycle — short open window is the most effective way to limit air exchange and heat loss.
• Stable sealing geometry — the panel does not sag or billow, so the brushes are not levered away from the frame over time.
• Safety integrated — photocell and bottom safety edge protect mixed vehicle and pedestrian traffic.
• 220 V single phase — standard supply with integrated servo control, no three-phase requirement.

• Temperature zone containment — less warm air spilling into chilled areas, so refrigeration load stays predictable.
• Pressure stability — holds modest differentials better than a curtain, which supports controlled-zone discipline.
• Moisture control — reduced humid air entry means less frost on evaporators and fewer defrost cycles.
• Odour and fume separation — keeps process air on the process side.
• Dust control — limits particle transfer into cleaner adjacent areas.

• Cold store to ambient warehouse boundaries
• Chiller and freezer antechambers
• Clean production zones adjoining general workshops
• Conditioned packing halls with open loading areas
• Test cells and process rooms requiring fume separation

1. Share both zone conditions: temperature, humidity and cleanliness target.
2. We define the seal package and panel thickness for the differential.
3. Drawing approval, then 30% T/T deposit and balance before shipment.
4. Production 15–25 working days, sea freight in plywood cases.
5. Remote commissioning support and spare seals during warranty.

Payment term is T/T (telegraphic transfer). A 30% deposit confirms the order and the balance is settled before shipment. Price is quoted per project based on opening size and insulation requirement.