The success of cold storage insulation depends not only on the panels themselves, but also on the details of the joints. Joints are the "high-risk area" for cold air leakage. Perfunctory operations such as incomplete filling of sealant and lack of reinforcement with aluminum foil tape may seem like minor oversights during installation, but they will actually become "money-eating loopholes" in later operations, directly pushing up energy consumption and maintenance costs.

         The filling quality of the sealant is the first line of defense. Standard operation requires the sealant to be "fully filled" with a width of no less than 10mm to ensure tight bonding with the insulation board without gaps. If only partially filled or the amount of sealant is insufficient, the sealant will shrink and crack due to thermal expansion and contraction in a low-temperature environment, forming tiny gaps that are barely visible to the naked eye. These gaps will continuously leak cold air, forcing the unit to operate at a high load for a long time, and energy consumption will rise accordingly.

         The reinforcing effect of aluminum foil tape is also irreplaceable. It can further enhance the sealing performance and aging resistance of the joints, effectively preventing water vapor from entering and avoiding the failure of the sealant due to moisture. Omitting this step will cause the sealant at the joints to accelerate aging under environmental influences, shortening its service life from the normal 5 years to 1-2 years. Frequent sealant refilling and maintenance will be required later, increasing additional costs.

          The direct consequence of cold air leakage is soaring electricity bills. Data shows that poor joint sealing can increase cold storage energy consumption by 20%-40%. The monthly electricity bill of a 100㎡ low-temperature cold storage may increase by 1,000-2,000 yuan. At the same time, the temperature fluctuation in the cold storage caused by cold air loss will also affect the storage quality of goods. After installation, an infrared thermometer should be used for testing. Only when the temperature difference between the joint surface and the environment does not exceed 2℃ is the sealing considered qualified.

         Dual standards must be adhered to for cold storage joint sealing: fully fill and compact the low-temperature resistant sealant, and reinforce the outer side with aluminum foil tape. Only by strictly controlling the joint quality can a solid insulation barrier be built, making the cold storage not only stable in constant temperature but also energy-saving and cost-effective.