Cold Storage Doors

Cronax Cold Storage Doors are engineered to provide superior thermal insulation, airtight sealing, and reliable performance for temperature-sensitive environments. Designed specifically for cold rooms, freezers, and refrigerated warehouses, these doors help maintain consistent temperatures, reduce energy loss, and ensure product safety. Constructed with high-density polyurethane / PUF panels and heavy-duty gaskets, Cronax Cold Storage Doors prevent thermal leakage and minimize energy consumption.

Their precision sealing system ensures maximum airtightness, making them ideal for both chilled and deep-freeze applications. Made with galvanized steel, stainless steel, or HPL finishes, the doors feature smooth, non-porous surfaces that are easy to clean and resistant to moisture, corrosion, and microbial growth. This makes them fully compliant with food safety and hygiene standards.

ENGINEERING HIGHLIGHTS
SMART CONTROL SYSTEM
CUSTOMIZATION OPTIONS

Door Type	High-speed insulated roll-up door tailored for cold storage and freezer environments, featuring a flexible curtain and self-reset mechanisms for temperature preservation and uptime.
Application Environment	Optimized for freezer and refrigerator zones between –40 °C to +5 °C, delivering tight sealing and minimizing thermal loss during operation.
Opening / Closing Speed	Opening speeds reaching up to ~2.0 m/s (100″ per second); closing speeds range around 0.5 m/s with smooth acceleration/deceleration control.
Insulation & Thermal Control	Multi-layer construction: 10.0 mm insulated curtain (foam or XPS core), 2.2 W/m2K thermal transmittance, guide heaters to prevent icing, and tight seal perimeter to reduce convection and maintain temperature integrity.
Self-Repair Feature	Flexible curtain disengages safely upon impact and automatically realigns on the next cycle, ensuring minimal downtime and energy efficiency.
Build & Materials	Standard structure using galvanized or stainless steel; side guides crafted from aluminum with insulating seals to minimize thermal bridges.
Standards & Efficiency	Doors are designed per EN 13241 and related safety norms; energy-saving technologies include tight sealing and insulated curtain systems to lower cooling costs.

Drive & Activation	Inverter-driven motor with soft-start/stop capability for smooth cycles; activation via radar, loops, photocells, or manual push-button controls.
Power & Control Enclosure	Available in 230 V single-phase or 415 V three-phase; control panels rated IP54 to IP65 for dust/moisture protection; configurable HMI or PLC interface.
Winterization Features	Electric trace heating in side rails, motor, and bottom edge to inhibit ice formation and maintain door integrity in humid cold environments.
Safety Measures	Equipped with light curtains, infrared photocells, bottom safety edges, and emergency stop buttons; some models open periodically to prevent ice build-up.
Self-Maintenance Logic	Heating elements and automatic openings help ensure continuous operations and prevent mounting frost without manual intervention.

Frame & Guides	Constructed with galvanized steel or anodized aluminum as standard; stainless steel (304/316) upgrades for corrosive or sanitizer-required environments.
Curtain Materials	Available in insulated foam or XPS-filled fabrics; high-density materials deliver low U-values (~0.035 W/m²·K), suitable for freezer applications.
Temperature Range	Operational from –40 °C up to +5 °C, depending on model and insulation method; models cover both freezer and refrigerated thresholds.
Color & Branding	Custom color options (RAL palette) with safety striping or logos; bright finishes help with visibility and team/product differentiation.
Perimeter Sealing	Soft-edge or rubber seals on all sides for airtight closure; helps maintain thermal control and reduce condensation ingress.