Cold room panel production process from OnlyKem

Cold Room Panel for Sale

The important role of PU panel in refrigeration industry

PU panel is also called PU sandwich panel, PUR Panel or PUF Panel in which polyurethane foam is been sandwiched between the two outer covers. The CFC-free insulated PU panel is commonly used as the cold storage panels due to its advantageous mechanical, chemical, biological and moisture properties, it is excellent to prevent thermal conductivity, restrain growth of fungi, keep out moisture ingress. We are engaged in manufacturing reliable PU sandwich panels in variegated specifications.

OnlyKem PU panels are available in customized sizes and structure for storage temperature ranges from -36°C to 10°C. The outer two layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc., that can meet the international hygiene standards.







The sizes of OnlyKem PU Panel is customized by your cold room requirements, the maximum length is up to 12,000mm, the available width is 960mm or 1000mm, the available thickness is with industrial standard of 50mm, 75mm, 100mm, 120mm, 150mm and 200mm. PU panel is suitable for low and high temperature controlled applications like cold room and freezer room, it has the characteristics of good thermal insulation, low cold air leakage, easy to transport and install, lower running cost and higher fire resistance property. B1 and B2 grade PU panels are available for cold room. All the PU panels are connected by the easily operated built-in cam-lock.

In recent years, we keep on investing more than 1,000,000 dollars to update the automatic manufacturing production lines and bsic product facilities. Our daily PU panel output is about 3000 square meters. Our high quality PU panels have flat and elegant appearance. The foaming time of each panel is 30 to 40 minutes, so the density uniform and the size stable.



Specifications of PU Panel







Features of PU Panel


Lightweight and modularized.
High mechanical durability.
Less construction cost.
Perfect isolation attributes.
Good thermal preservation.
Water proof, sound proof.
Energy saving and fire resisting.
Competitive in price.
The coated layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc.
The EC/USDA international hygiene standards.





Installation Instruction


As the important component of the cold room, OnlyKem Brand PU Panels are designed and manufactured with detailed consideration for installation and maintenance. Followed are some instructions:
Before the installation, make sure that the locking devices are at the stop position. To do so, turn the locking devices counter-clockwise, using a wrench with force, until it stops.

2.Push panels together and turn wrench 1/4 turn clockwise. This will engage the male locking device ‘arm’ over female locking device ‘pin’.

3. Keep turning the wrench for another turn until the wrench stops. If there are any problems during the operation of cam locks, turn the wrench counter-clockwise with force until it stops moving any further. This will put the locking device at its original position and you can try to assemble the panel again by moving the wrench in a clockwise direction.

Any questions, please send email to us at info@coldroomplus.com.


Products and Manufacturing Process


OnlyKem Brand Pu Panel factory is equipped with automatic production lines. We had 12 years of experiences of manufacturing PU Panels with daily output up to 3,000 square meters. We have competitive advantages in supply chain management, optimized manufacturing process and quality control which power us to keep high product quality, shorter delivery time and competitive cost to meet the demands of our worldwide customers. Most products had been kept up with the international forefront counterparts. Some of them have enjoyed leading position. Our PU panel products are sold in more than 50 countries around the world.

Industrial Cold Room Installation Instruction

Industrial Cold Room Installation Instruction include two main parts, insulation part and refrigeration part. Following is the installation instruction of OnlyKem cold room.

Industrial Cold Room Installation Instruction
https://goo.gl/paXknR 

1.1 Industrial Cold room panel material

The insulation material of OnlyKem Industrial cold room is polyurethane foamed composite insulation boards with spray-coated steel plates or stainless steel plates, with different thickness for different room temperature. Insulation material is flame-retardant, non-chlorofluorocarbons. Add a certain proportion of reinforcing materials to improve performance, but will not therefore reduce the thermal insulation properties.

1.2 Industrial Cold room panel installation requirement

The seam between cold room panels must be sealed well, and the joint seam between the two panels is less than 1.5mm. At the same time, the structure is required to be solid and reliable. After assembling, all the joints of the cold room panels should be coated with a silicone sealant. Following drawing for your reference.

When the roof panel span exceeds 6m or the ceiling of the cold storage is heavy, the ceiling of the cold storage must be hanged. The position of the bolts should be selected from the middle point of the cold room panel. In order to keep the cold room panel to be as even as possible, the mushroom type screw, hanger and U-shaped channel steel must be used for fixing according to the diagram.

1.3 Industrial Cold room door

1) The door frames of low-temperature industrial cold room should be embedded with electric heating to prevent the sealing strips of the doors from being frozen. When electric heating is used, electric heating protection devices and safety measures must be provided.

2) The industrial cold room door has a door lock and the door lock has a safety unlocking function, we call it escape device.

1.4 Accessories

1) The interior of the warehouse is equipped with moisture-proof and explosion-proof LED lamps, which can work at low temperature. The lampshade should be damp-proof, anti-corrosion, anti-acid and anti-alkali. The degree of lighting in the industrial cold room should meet the requirements for the entry and exit of goods.

2) Pipeline holes must be sealed, moisture-proof and heat-insulated.

3) Industrial cold room should have a pressure balance device to prevent and eliminate the pressure difference between the cold room and outside.

4) Control panel requires installation near the Kumen.

5) Drainage floor drains must be installed in the freezer to allow the sewage to drain when cleaning the cold storage.

2.1 Installation of air cooler

1) The installation position of the air cooler shall be far away from the cold room door, and in the middle of the wall, the air cooler shall be kept horizontal;

2) The cooling fan is mounted on the top panel or the steel frame of warehouse, and its fixing must use a special nylon screw (material nylon 66) to prevent cooling capacity leak;

3) When fixing the air cooler with bolts, it is required to install wooden blocks with a length of more than 100mm and a thickness of more than 5mm on the top panel to increase the load-bearing area of the storage panel.

4) The distance between air cooler and the back wall is 300-500mm.

5) The wind direction of the air cooler cannot be reversed to ensure that the cooler blows outward;

6) When the refrigerator defrosts, the fan motor must be disconnected to prevent hot air from blowing into the cold room when defrosting;

7) The height of goods should be at least 30cm below the bottom of the air cooler.

2.2 The installation of refrigeration pipe

1) When installing the expansion valve, the temperature-sensing package must be fastened to the upper part of the horizontal return pipe, and ensure good contact with the return pipe. Heat insulation should be provided outside the return pipe to prevent the temperature from being influenced by the temperature of the storage tank.

2) Install the oil return bend at the bottom of the riser pipe before the chiller return pipe climbs out of the warehouse;

3) When a processing room shares a unit with a cold room or medium-temperature cabinet, an evaporation pressure regulating valve must be added before connecting the re-circulating line of the refrigerated processing room with other refrigerating or medium-temperature cabinet pipes;

4) Each cold room must be equipped with separate ball valves on the return air pipe and the liquid supply pipe for debugging and maintenance.

2.3 The installation of water drainage pipe

1) Drainage pipelines running in the cold room should be as short as possible.

2) The cold room’s drainage pipe should have a certain slope, so that the defrost water can be smoothly discharged outside the storehouse;

3) The cold storage with working temperature less than 5°C must be equipped with insulation pipe (thickness greater than 25mm) in the drain inside the warehouse;

4) Heating wire must be installed in the freezer drain;

5) Connection pipes outside the cold storage must be installed with drainage traps to ensure a certain liquid seal in order to prevent large amounts of hot air outside the library from entering the cold storage.