Thermal Insulation Film for Container Houses

The thermal insulation film for container houses mainly achieves thermal insulation by reflecting sunlight, blocking heat conduction, and coordinating humidity and temperature control. Its core principles and material characteristics are as follows:

1. Material and Structure of the Thermal Insulation Film

The thermal insulation film for container houses usually adopts a multi-layer composite structure, with core materials including:

• Aluminum Foil Layer: As a reflective layer, it can reflect more than 80% of solar radiation heat, significantly reducing the temperature rise inside the container caused by direct sunlight. For example, in actual tests, sandwich panels with an aluminum foil reflective layer can make the temperature rise inside the container 22 minutes slower than that outside.
• Bubble Film or Foam Layer: For instance, a polyurethane foam layer (with a thickness of ≥50mm) reduces heat transfer by blocking heat conduction. The national 'Technical Standard for Steel Structure Integrated Houses' requires that the heat transfer coefficient of the walls of residential containers be ≤0.45W/(㎡·K), which is equivalent to 1.8 times the thermal insulation efficiency of traditional brick-and-mortar walls.
• Moisture-Proof Film and Fireproof Layer: The inner-layer fireproof gypsum board and the moisture-proof film work together to control humidity and stabilize temperature, avoiding condensation or mildew problems caused by temperature differences.

2. Actual Effects of the Thermal Insulation Film

• Summer Cooling: The combination of the aluminum foil reflective layer and the foam layer can reduce the temperature inside the container by 5-8℃. When combined with an adjustable sunshade roof and bottom ventilation slots, the actual measured temperature inside the container in the afternoon is 3-5℃ lower than that outside, providing a comfortable and non-stuffy feeling.
• Winter Insulation: In a closed state, the room temperature only drops by 1.3℃ in 8 hours. The heat storage characteristic keeps the nighttime temperature fluctuation within 2℃, avoiding sudden cold and heat.
• Sensory Optimization: The delayed response characteristic makes the temperature change gentle. When combined with a double-layer container structure or a sloped roof design, it can further enhance lighting and ventilation effects and reduce reliance on air conditioners.

3. Application Scenarios and Selection Suggestions

• Cold Chain Transportation: Special thermal insulation films for 20-45-foot containers (such as aluminum foil thermal insulation layers + bubble films) can maintain a stable temperature inside the cargo containers, suitable for the transportation of temperature-sensitive goods such as seafood and pharmaceuticals.
• Residential Containers: Choose sandwich panels with an aluminum foil reflective layer, combined with ventilation slots and sunshade devices, to improve living comfort. For example, a certain café in Mogan Mountain adopts such a design, and the temperature inside the container is still suitable without turning on the air conditioner.
• Temporary Buildings: For scenarios such as construction site dormitories and movable plank houses, lightweight thermal insulation films can be selected to balance cost and performance.

4. Mainstream Products in the Market

The common price range of thermal insulation films is 980-2230 yuan per set (for 20-40-foot containers). Brands include Changzhou Changbo and Guangzhou Lanerdi, which offer a 7-day replacement guarantee and 48-hour delivery service. Some products support customization, such as aluminum-plated film three-dimensional pallet covers and PVC product sea freight thermal insulation aluminum foils, to meet special needs.