Cold Room Sliding Door

Cold room sliding doors are designed to maintain temperature and ensure air-tightness for temperature-controlled environments such as cold stores, freezers, and deep freezers, these reliable door solutions operate in positive and negative temperatures between 0ºC (32F) and -40ºC (-40F).

Cold room sliding doors are essentially made of thermally resistant polyisocyanurate (PIR) foam core, anodized aluminum frame system, closing systems, and heavy-duty hardware. Cold room sliding doors are highly durable and can withstand extreme temperatures, resist mechanical stress, and meet different industrial and commercial cold rooms’ requirements including fresh produce, food & beverage, meat & poultry, fishing, laboratories, clinics, pharmaceuticals, etc.

Cold room sliding door is also referred to as horizontal sliding door.

Cold room sliding doors are designed and manufactured to meet the operations requirements of industrial and commercial cold rooms with large door openings, access of pedestrian, overhead passages, handling, storage cages or chilling trolleys, cold room sliding doors are widely used for freezers down to -45°C and other temperature-sensitive applications such as:

Walk-in cooler room 

Walk-in chiller room

Walk-in blast freezer

Refrigerated/freezer warehouses

Controlled-atmosphere storage (CAS)

Large-scale cold storage & processing facilities

Food and beverage production plants

Manufacturing, distribution & warehousing

Pharmaceutical, nutraceutical and biotech 

USDA/FDA and GMP environments

Cold room sliding doors are essentially designed to maintain temperature differentials between the internal and external environment, given the high-performance insulation panel, door leaf, anodized aluminum frame, and effective perimeter seals, cold room sliding doors can prevent thermal bridging, eliminate air infiltration, and minimizes air exchange due to high-speed opening and closing, these characteristics made them preferred for food industries cold storage (+0ºC), freezing chambers (-20ºC) and deep-freezing tunnels (-40ºC).

Cold room sliding doors are designed and manufactured to maintain temperature through the elimination of convection & conduction, as well as the segregation of areas with different temperatures,  

Convection

Cold room sliding doors are essentially designed to reduce convection (air exchange) and transfer heat from outside of the cold room into the cooler area through open doors or poorly sealed openings, this eliminates the formation of ice or frost, while the proper insulation, tight seals and fast opening speeds form a barrier against heat transfer, humidity, and moist air, therefore, cold room sliding doors reduces ice accumulation and maintain constant temperatures for positive or negative cold rooms.

Conduction

Conduction is the transfer of thermal energy between two solid materials in thermal contact, however, using higher R-value insulating material such as Polyisocyanurate (R-5.6 to R-8.0), Polyurethane (R-5.5 to R-6.5), Polystyrene (R-3.8 to R-5.0) provides greater resistance to heat flow and also ensure efficient cooling, this mitigates heat transfer through the material, maximizes energy efficiency, and save money, on the other hand, low R-value insulating core allows heat to pass easily through the materials which increase moisture buildup and augment operational costs. 

Energy-efficiency

Cold room sliding doors offer various energy-saving benefits, due to the thermally insulated door, long-lasting leaf, and optimal seal, this reliable thermal temperature-controlling door helps minimize energy; losses and reduce heat convection and radiation by eliminating thermal bridging while ensuring fast opening and closing speed, hence, cold room sliding doors form a physical barrier between the freezing or chilled area and the ambient surrounding environment, which increase refrigeration efficiency, minimize energy consumption and save money.

Cold room sliding doors are designed to meet temperature control needs and stringent hygiene requirements, the following are the main materials used for cold room sliding doors: 

Insulation Core

Cold room sliding doors insulating core is commonly made from rigid Polysisocianurate (PIR) foam core, Polyurethane foam (PUR), Expanded polystyrene foam (EPS), and Extruded polystyrene foam (XPS), insulation core is used to maintain the desired temperature and ensure thermal performance, its available in different material, properties, thickness, size and density. 

Leaf Surface

The door leaf surface is often made of a high-strength single leaf which resists mechanical shocks, and is equipped with an anti-fall-anti-tip system which ensures safety, whereas the door leaf is often made from the following material:

Galvanized steel sheet

Pre-painted galvanised iron (PPGI)

Lacquered steel

Stainless steel (AISI 430, 2B finish)

Food-grade stainless steel (AISI 304)

Food-safe laminated steel 

Aluminium sheet 

Composite plastic

Industry-compliant PVC

GRP (Glass Reinforced Plastic) or Fiberglass.

Frame System

Cold room sliding door self-supporting frames or sliding devices are usually made from anti-corrosion material such as extruded anodized aluminum, epoxy powder-coated galvanized steel, painted or standard stainless steel, AISI 304, AISI 430 stainless steel or PVC frame. The frame system is designed to hang the sliding doors on a smooth-running aluminium track, and is selected according to the weight requirements of cold room sliding doors, also, this frame system can be adapted and mounted to any cold room panel with simple mounting tools and can be sealed with different foaming material, silicon seal, silicon rubber, hermetic seal, co-extruded trim seal, double weatherstrip, etc. 

Gaskets

To ensure air tightness, prevent air infiltration and other elements from penetrating through into the cold room, various types of gaskets can be used to seal gaps at door perimeters (the header and the jambs) including rubber strips, EPDM rubber, silicone, soft PVC door gaskets, heavy-duty gasketing, weather-stripping, etc. 

Coating

To protect cold room doors from corrosion and guarantee maximum durability in aggressive atmospheres, a wide range of protective coatings can be applied to the door surface including Plastisol, PET 55 µ, Stainless lacquered white, Grantie HDX 55 Lacquered steel, and Inox 304/316, a variety of hygienic and aesthetically pleasing finishes, RAL colours, and customization features.

Hardware

A large selection of hardware, components and accessories can be provided to install commercial and industrial cold room sliding doors, a wide variety of hardware can be supplied including:

Aluminum hardware, gaskets, bolts, handles, hinges, and sliding systems.  

Aluminum or Plastic profiles, hygienic and non-heat-permeable PVC profiles. 

Flashing for panel installation or anchors for brickwork installation.

Automation system for industrial and commercial cold room doors

Cold room sliding doors are designed to meet the requirements of positive and negative temperature applications, customers can choose from a wide range of cold room sliding door types: 

Insulated and semi-insulated cold room sliding door

Manual or automatic horizontal sliding doors

Sliding cold room door – industrial door system

Sliding cold room door – commercial door system

Sliding freezing cold room sliding door

Sliding chiller cold room sliding door

Sliding cold room door – walk-in cold rooms 

Food-safe cold room sliding door

Modular cold room sliding door

Large-scale cold room sliding door

Custom cold room sliding door

These versatile cold rooms sliding doors come in a range of sizes, food-safe materials, and finishes that fulfill the hygiene requirements of various industries including food & beverage, agri-food, pharmaceutical, medical, laboratories, automotive, etc.

Cold room sliding doors are lightweight and versatile cold room sliding doors that meet the highest standards of cooling, freezing, hygiene, and safety, thanks to the thermal bridges free structure, cold-bridge-free design, high-performance thermal insulation, durable door leaf, hermetic closure, and hygienic finish which maintain consistent temperatures in cold rooms and keep the environment protected from external factors.

Moreover, the door leaf and frame system is made of corrosion-resistant material such as stainless steel, aluminum, or galvanized steel, while the complete surface comes protected with an anti-corrosion coating that keeps the sliding door protected from aggressive environments.

Cold room sliding doors can be made to measure based on cold room-specific requirements and comes in a wide range of material that vary in properties, structure, thickness, size, and customization features.

Cold room sliding door is EI2-60 fire rated door that resist fire for 60-90-120 minutes, due to the fire-resilient door leaf and fire retardant properties, cold room sliding doors can provide passive fire protection for different industrial and commercial cold room applications, while they prevent rapid spread of flames, smoke and minimises fire damage. Also, fire cold room sliding doors are compliant with the European standard EN 1634 – Fire resistance and smoke control tests for door, and EN 13501-2 Fire classification of construction products and building elements.