Operating Temperature Range – Reliable Performance from +60°C to -50°C
Cold room hinged door systems manufactured according to BOB Modular Standards can be configured to operate within a wide temperature range from +60°C down to -50°C, depending on project requirements and application details. This wide operating range allows hinged doors to be used not only in standard cooling areas, but also in facilities with multiple temperature zones.
In applications approaching +60°C, stable door performance depends on correct frame selection, appropriate door leaf construction, accurate gasket placement, and the engineering suitability of locks and hinges.
In applications reaching -50°C, risks such as freezing, icing, and loss of airtightness increase significantly. Therefore, sealing systems and auxiliary heating solutions become critical for hinged doors operating at very low temperatures.
Frozen Rooms – Importance of Double Gasket System and Heating Cable
Frozen rooms, operating at deep-freeze temperatures in Cold Storage facilities, represent the most demanding environments for hinged door systems. Due to high temperature differences, condensation, icing, and freezing risks increase around the door perimeter.
For this reason, cold room hinged door systems used in frozen rooms must be equipped with a double gasket system. The double gasket structure creates two independent sealing lines between the door leaf and the frame, significantly reducing air leakage. As a result:
- Temperature stability inside frozen rooms is improved
- Moisture ingress from the outside is minimized
- Ice formation and freezing around the door are reduced
Reducing moisture entry helps prevent operational issues such as forced opening, increased wear, and long-term deformation.
Another critical component for frozen room applications is the heating cable (resistance cable). Heating cables are installed around the door frame and sealing zones to reduce ice formation. In extremely low temperatures, external moisture may condense and freeze around the door, making operation difficult. The heating cable provides controlled heat, reducing icing risks and supporting continuous, safe, and long-lasting door operation.
Cold Room Hinged Door Leaf – Structure and Manufacturing Details
In cold room hinged door systems manufactured according to BOB Modular Standards, the door leaf is produced to achieve high durability and thermal insulation performance.
The structural frame of the door leaf is formed using anodized aluminum profiles, providing mechanical strength and dimensional stability even at low temperatures. Metal sheets are then placed into the aluminum profiles to form the outer surfaces of the door leaf.
After the door leaf body is assembled, polyurethane injection with a density of 42 kg/m³ is applied to the internal cavity. This insulation core ensures the high thermal performance required for Cold Room and Cold Storage applications.
Door leaf surface materials can be customized according to customer requirements:
- Stainless steel sheet
- PVC-coated sheet
- Polyester-coated sheet
Sheet colors can be selected based on project requirements.
In the final stage, gaskets are installed into the aluminum channels. The gasket models used are:
- BOB-K23
- BOB-K4
- BOB-K67
- BOB-K6
Cold Room Door Frames – Structural Options
Door frames are offered in three main groups:
1️⃣ PVC Door Frames
- Hinged Door PVC Main Frame Profile (80 mm) – BOB-10018
- PVC Frame Profile (Rear Return Profile) – BOB-10024
- PVC Frame Profile (20 mm Extension) – BOB-10019
2️⃣ Aluminum Door Frames
- Thermal Break Aluminum Frame Profile – BOB-101
The thermal break structure reduces thermal bridges and improves energy efficiency.
3️⃣ Stainless Steel Door Frames
Used in special Cold Room and Cold Storage projects where high hygiene standards are required.
Lock Systems – Cold Room Swing Door Safety
- Cold Room Door Lock – BOB-5000
- Cold Room Door Lock – BOB-5001
- Cold Room Flush-Mounted Door Lock – BOB-5002
Hinge Systems – Engineered Solutions
The hinges used in hinged doors are manufactured from special engineering plastic composite material:
- Cold Room Door Hinge (Detachable, Adjustable) – BOB-6004
Allows the door leaf and frame to separate automatically without removing any screws, enabling easy transport. - Cold Room Door Hinge (Ramped, Adjustable Nut, Covered) – BOB-6001
Where Is the Hinged Door Used?
The cold room hinged door manufactured according to BOB Modular Standards is widely used in:
- Cold Room (Buzhane) facilities
- Cold Storage areas
- Frozen rooms
- Food production and processing plants
- Logistics and distribution centers
- Supermarkets and retail cold storage
- Restaurants and industrial kitchens
- Areas requiring cold room swing door solutions
Conclusion
The cold room hinged door manufactured according to BOB Modular Standards is a reliable Cold Room Door solution for Cold Room, Cold Storage, and Frozen Room projects. With its strong door leaf structure, multiple frame options, engineered lock and hinge systems, and configurability from +60°C to -50°C, this door provides stable, long-lasting performance. In frozen room applications, the double gasket system and heating cable play a critical role in reducing icing risks and ensuring uninterrupted operation.
Product code: BOB-MK100.
