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Thermal Insulated High Speed Doors for cold room

It is fast running, thermal insulated, and anti-freezing.  Compared with traditonal cold room sliding door, it can help clients improve goods transfering efficiency and also reduce a lot electricity energy cost.  Thus you can consider adding such doors as a daily traffic working door which will keep opening and closing during daytime.  

   High speed running

    The opening speed can reaches up to 2.0m/s. And the closing speed can reaches up to          1.0m/s. This means that the door can finish a cycle of opening and closing within in 

     several seconds. It bring several major benefits:


  • Improve work efficiency:  Workers or forklifts will no need wait in front of the door

    and can directly go across it. The material handling speed is higher by at least 5 times

    than tradional roll up doors;

  • Keep clean and hygiene: The fast running reduces the open time to only seconds in a cycle of passing the door. Thus much less outside air and dust will enter the room;

  • Keep temperature: Heat loss is reduced by large by reducing open time.

High frequency working

The motor is frequency motor, and control panel is frequency inverter system. It 

can change work power output gently. So the door can start and stop in a soft process. Its running speed will accelerate or decelerate gradually. This can avoid overriding and over-heating caused by constant up and down. So the door can keep 

running and no need worry its motor burnt or structure damaged. 

Our door can run up to 2000 times per day. This is why it is a best choice for busy area with heavy traffic like forklifts or passing workers. Our door can run up to 

2000 times per day. This is why it is a best choice for busy area with heavy traffic like forklifts or passing workers. 


   Thermal insulated


Insulated insulated sandwich curtain. Total Thickness:30mm.  Inside is special cold-bridge design structure. There is separate compartment inside the door curtain to 

cut the route of heat transfering. This can reduce heat-conduction by additional 


  • Surface skin: Europe imported PU material fabric, quite different with regular pvc fabric which is used by other competitors. It will not absorb humidity and moisture,  and can work long life in cold room. 

  • Inside filling: Inside is filled with high-density insulating EPE wool. It is special

    hydrophobic and can avoid concentration caused by humidity inside cold room.  

Anti-freezing and ice-proof

Near door area of a cold room, the moisture will quickly form into dew and freeze into ice 

because of big temperature difference. The door will not be able to move up and down 

smoothly. This bring big harms to its drive motor. So it becomes very critical for the doors to avoid icing and freezing. This is essential to guarantee long work life of the doors.

  • Heating device:  All-round heating belt used to avoid freezing of door structure.

    This can avoid damage for door fabric and driving system when the door is frozen

    steadily in low temperature room.

  • Anti-freezing auto-run: We input a special designed program inside the control panel. Every time interval, the door will slightly move up and down by only five millimeters.

    This is to shake off the tiny ice and avoid to be further frozen steadily. And the time

    interval can be set into 30 seconds, 1 min, 2 min, and so on. You can decide according to your cold room situation.

   Self-repairing after collision accidents

Bottom beam of the door curtain is flexible soft design, quite different from hard metal beam of regular rapid doors. When there is a collision accident by forklift or other vehicles, it will 

get out from side frame and not be damaged. Then the curtain will automatically enter the 

side rail through a pull-back device at the top of the rail.And it can recover automatically. 

This design effectively reduces the cost and energy of maintenance and repair work caused by collisions. 

High air-tightness

Special zipper design structure at two sides of door curtain, connecting the fabric and side 

guide rails as a whole body, eliminating gap between them. It obviously improves overall 

seal performance and air tightness.  

Thus, such doors are quite for high-clean areas, like clean room, food or pharmaceutical 

workshop, or laboratory. It will help prevent outside air and dust entering the room. 

Benefiting from its zipper airlock structure, it can keep the air pressure difference inside air controlled clean rooms, air shower or laboratory. 


   Longer work life with lower maintenance


    Advanced Italy servo technology drive motor and control system. Compared with 

    traditional door system in the market, it has several advantages:


  • Double encoders:  They calibrate with each other, to make running limit

    more accurate than tradtional limit sensors. This completely avoid running

    limits error and reduce maintenance. And even if one encoder is damaged, you can switch to another encoder and the door will continue to work well, no need repair;

  • Absolute encoder: outside encoder is advanced absolute encoder. It will always keep the set limits even during power failure. So you no need bother to do the frequent job of re-seting the limits;

  • Flexile Torque Control System:  The output torque of motor keeps

    changing according to running speed and load automaticlaly. This avoid

    over-heating and over-load after long time use, and make sure the door

    work longer life.

User freindly Human-machine interface system

There is a LED display on the controller, showing all parameters and setting steps in 

English language. You can set or change any parameters like using a mobile phone. So you will feel very easy and comfortable to use the doors even you do not have any experience. 

And it is inbuilt with Fault-shooting program. The display will show the error information

when there is some problem. 

There are addtional input and output signals in the controller. You can activate it by the 

screeen and the door will work together with your production line, robots, conveyor, or other machines.


   High IP class of electric parts

    The humidity level inside cold room is extremely high, especially near the doors. Moisture     will continue entering the electric parts through its unsealed gap. This may bring big 

    harm to electric parts and shorten its work life. To solve this problem, we select and 

    adopt electric parts with high Ingress Protection (IP) class. 

  • Drive motor: IP65; 

  • Control panel: IP55;

  • Encoder: IP65; 

  • Safety photo sensor: IP65

  • Button box: IP55


Multiple safety protection

Considering the high speed running of the door, safety protection become very 

important to avoid possible accidents.  This can not be neglected when using 

such high performance doors. 

There are three safety protection devices:

  • Safety photo sensor:  The sensor can send a infrared light beam from one side 

     to another. When it is blocked by passing human or vehicles, the door will 

     immediately stop or get up. Thus it aims to avoid accident;

  • Safety airbag sensor: It is a soft rubber airbag at the bottom. If something 

      touches the bottom, the door will stop or get up. So it aims to stop accident

      once it happens;

  • Alarm lamp: It gives out light flash signal or sound signal when the door 

     running. Passing workers or vehicles can easily get aware that the door is

     working and take special care to avoid accidents.

   Interlocking Function

    In some industries like food, pharmaceutical or electronics, it is a very 

    important issue to keep hygiene and clean inside the room.  This is critical 

    to keep final quality level of the finished products, no matter it is food, 

    medicine or electronic applicances.  How to prevent outside air and dust is

    a major difficulty. A interlocking passage system can solve this problem 


    Door A and Door B are installed at two ends of the passage. When door A 

    opens, Door B will never open. Only after Door A closed, Door B can open.

    Thus, at any time, there is at least one door keep closed. So the outside air 

    and dust will never be able to enter the room.


     We have input the interlocking function in every door.  When necessary, any 

     two doors can be interlocked. 

Various Operation Methods

Every door will have wall mounted control buttons at both interior and exterior. This can make sure the door can be operated by workers at any time when they need. 

To improve your work efficiency, we also offer various addtional choices of operation devices.

  • Remote control:  Each door can have two or more remote control units. People can open or close the door from as far as 100m distance; 

  • Radar sensor: It can detect human or vehicles moving towards the door, and the door will open automatically. After passing through, the door will close automatically within several seconds which can set;

  • Vechicle loop detector: It detecting wire loop will be embedded into ground floor near the door. It can detect all the big metal objects passing on its loop like forklifts.  It does not detect humans. Thus such sensor is quite fit for doors which only allow forklifts passing automatically. 

  • Pull-cord switch:  This is very convinient for forklift drivers, and also can avoid unnecessary opening of the doors compared with radar sensors or vehicle detector;

Technical Data:

Applicable location:both interior and exterior
Max dimension: 5000mm wide*6000mm high      
Max opening Speed: 2.0m/s   
Max closing speed:  1.0m/s  
Wind resistance: Beaufort scale 10 (25m/s) 
Power supply: 1-phase 220±10%V,50/60HZ, or  1-phase 380±10%V,50/60HZ
Protection level of electric: IP55 
Available colors of fabric:Yellow, Blue, Red, Grey, White, Clear 
Fabric curtain:PVC(Polyvinyl chloride), 1.0mm thick, optional for 1.2mm or 1.5mm thick 
Frame material: Powder coated galvanized steel, optional for 304 stainless steel 
Wind bar:Aluminum alloy material, surface is powder coated


Video Demonstration:


Explore Other Models:   

We have a full range of high speed doors. Maybe you will be interested in other types.

Click below photo to choose the best model fit for your own situation.

Model: RRD-STDModel: RRD-SERVOModel: RRD-ZIPModel: RRD-WINDModel: RRD-Alu
Basic model with low costMostly used standard typeSelf-repairing and airtightStacking type for big sizeSpiral type, aluminum