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Product Introduction
This aluminum foil blanket sleeve with Velcro closure is a thermal insulation felt material with flame-retardant, thermal insulation, wear-resistant, anti-static, and radiation-resistant properties. The material features a highly developed microporous structure that provides adsorption capacity, rapid desorption, and effective purification characteristics. The felt can be fabricated into aluminum foil insulated sleeves of various specifications, equipped with flame-retardant hook-and-loop fasteners for installation. The sleeve effectively resists thermal radiation and is widely used in wall insulation, power generation facilities, textile manufacturing, pipeline insulation, and steel structure applications.
Core Advantages
Microporous Felt Construction
Highly developed microporous structure provides thermal insulation, adsorption capacity, and rapid desorption properties for effective thermal management.
Flame-Retardant Properties
The felt material does not support combustion and self-extinguishes when removed from flame sources, meeting industrial fire safety requirements.
Multi-Layer Protection
Aluminum foil outer layer reflects radiant heat; felt inner layer provides thermal insulation, wear resistance, and anti-static properties.
Velcro Closure System
Flame-retardant hook-and-loop fasteners enable tool-free installation, removal, and reinstallation for maintenance access.
Radiant Heat Resistance
Aluminum foil outer surface reflects thermal radiation, reducing heat transfer to underlying components and surfaces.
Versatile Fabrication
The felt can be fabricated into sleeves of various diameters, thicknesses, and lengths to suit specific application requirements.
Product Features
Core felt material Thermal insulation felt with microporous structure. Thickness options: 3mm, 5mm, 10mm, 15mm, 20mm. Density: 60-120 kg/m³.
Outer layer Aluminum foil laminated to the felt surface. Foil thickness: 0.05-0.10mm. Radiant heat reflectivity: 90-95%.
Closure system Flame-retardant Velcro hook-and-loop tape sewn along both longitudinal edges. Temperature rating: -40°C to +150°C.
Temperature rating Continuous operation: -50°C to +260°C (aluminum foil). Felt inner layer withstands higher temperatures in non-oxidizing environments.
Microporous structure properties High surface area provides adsorption capacity. Rapid desorption allows the material to release absorbed moisture and gases quickly.
Available dimensions Flat width: 100mm to 1000mm. Felt thickness: 3mm, 5mm, 10mm, 15mm, 20mm. Standard lengths: 5m, 10m rolls.
Technical Specifications
| Parameter | Specification |
|---|---|
| Continuous operating temperature (aluminum foil) | -50°C to +260°C |
| Felt density | 60-120 kg/m³ (depending on thickness) |
| Felt thickness options | 3mm, 5mm, 10mm, 15mm, 20mm |
| Aluminum foil thickness | 0.05-0.10mm |
| Radiant heat reflectivity | 90-95% (infrared spectrum) |
| Thermal conductivity (felt at 200°C) | 0.035-0.045 W/m·K |
| Flame resistance rating | UL VW-1, self-extinguishing within 5 seconds |
| Velcro temperature rating | -40°C to +150°C |
| Surface resistivity (anti-static property) | 10⁹-10¹¹ Ω/sq (felt material) |
| Available flat widths | 100mm, 150mm, 200mm, 250mm, 300mm, 400mm, 500mm, 600mm, 800mm, 1000mm |
| Standard length | 5m, 10m rolls |
| Color | Silver/aluminum (outer), white/light gray (inner felt) |
Application Scenarios
Wall insulation and building envelopes
Power plant piping and equipment
Textile manufacturing machinery
Industrial pipeline insulation
Steel structure thermal protection
HVAC ductwork insulation
Boiler and heat exchanger covers
High-temperature process equipment
This aluminum foil blanket sleeve with Velcro is suitable for wall insulation in commercial and industrial buildings, providing thermal barrier properties. Power generation facilities use the sleeve for pipe insulation, equipment covers, and turbine component protection. Textile manufacturing applications include heat shielding on drying equipment and calender rolls. The sleeve is used for industrial pipeline insulation in chemical plants, refineries, and food processing facilities. Steel structure applications include thermal protection for beams, columns, and supports near heat sources. The Velcro closure enables installation on existing pipes and equipment without disassembly, making it suitable for retrofit projects and scheduled maintenance where regular access is required.
Common Questions and Solutions
What is the microporous structure and how does it benefit thermal insulation?
The microporous structure consists of millions of microscopic air pockets within the felt material. These pockets trap air and reduce thermal conductivity, providing effective insulation with lower material thickness than conventional insulation. The structure also provides adsorption capacity for capturing airborne particulates and rapid desorption for moisture management.
What is the maximum continuous temperature for the felt material?
The felt inner layer withstands continuous temperatures up to 400-500°C in non-oxidizing environments. However, the aluminum foil outer layer has a continuous rating of 260°C. For applications exceeding 260°C, consider an alternative outer layer such as stainless steel foil. Contact technical support for high-temperature configurations.
Does the sleeve provide anti-static protection?
Yes. The felt material has surface resistivity in the range of 10⁹-10¹¹ Ω/sq, providing anti-static properties that dissipate static charge buildup. This is particularly important in textile manufacturing, electronics production, and environments with flammable dust or vapors.
How do I select the correct thickness for my application?
For pipe insulation where space is limited, 3-5mm thickness provides basic radiant heat reflection and protection up to 100°C differential. For industrial pipelines with surface temperatures above 150°C, 10-15mm thickness is recommended. For high-temperature applications (250°C+) or where personnel protection is required, 20mm thickness provides additional thermal barrier and lower outer surface temperature.
Can the sleeve be used outdoors or in wet environments?
The aluminum foil outer layer provides some weather resistance, but the felt material can absorb moisture if the foil is damaged. For outdoor or wet environments, ensure the foil remains intact and seal all seams and cut edges with aluminum tape. For continuous outdoor exposure, consider an additional weather barrier or schedule periodic replacement.
How should the sleeve be cut and terminated?
Cut the sleeve using a sharp utility knife or heavy-duty scissors. Use a straightedge for clean cuts through the felt material. After cutting, seal the cut edges with aluminum foil tape to prevent felt fraying and maintain the radiant barrier. The Velcro will be separated at the cut point; the sleeve can still be used if the Velcro is present on both edges of the cut piece.
Installation and Handling Considerations
Wear gloves when handling the aluminum foil blanket sleeve. The aluminum foil edges can be sharp, and the felt material may produce dust during cutting.
Clean the surface of the pipe, duct, or equipment before installation. Remove rust, oil, and debris that may prevent the sleeve from lying flat or may damage the aluminum foil.
Wrap the sleeve around the component with the aluminum foil outer layer facing outward toward the heat source or ambient environment. The reflective surface should be oriented to reflect radiant heat away from the insulated component.
Press the Velcro closure firmly along its entire length to ensure full engagement. For larger diameter pipes or equipment, secure both ends and at intervals with stainless steel tie wraps or high-temperature tape to prevent the sleeve from opening under vibration.
For multiple-layer insulation, install the first layer with the aluminum foil facing outward, then add subsequent layers with aluminum foil facing the same direction. Stagger the Velcro seams between layers to minimize heat leakage.
Inspect the sleeve periodically for damage to the aluminum foil (tears, punctures, or oxidation), compression of the felt material, and Velcro engagement. Replace the sleeve if the felt is visibly compressed beyond 80% of original thickness, if the aluminum foil is significantly damaged, or if the Velcro no longer holds securely. The microporous felt may lose insulation performance if saturated with oil or other contaminants; replace contaminated sleeves.
