Aluminum Foil-Scrim-Kraft Tape (FSK), commonly known as FSK tape, is a versatile adhesive tape widely used across various industries due to its robust composition and functionality. This tape is made up of three distinct layers: aluminium foil, fibreglass scrim, and kraft paper. The aluminium foil layer provides durability and acts as a vapour barrier, effectively preventing moisture from penetrating and causing damage. The fibreglass scrim, embedded within the tape, enhances its strength and stability, enabling it to withstand mechanical stresses. Meanwhile, the kraft paper layer adds flexibility, preventing the tape from cracking and allowing it to conform to irregular surfaces. These combined layers ensure that FSK tape adheres well to surfaces, serving as both a moisture and vapour barrier.
FSK tape is utilised in various applications, primarily within the insulation industry. One of its main uses is for insulation closure, where it seals seams and joints on aluminium-faced fibreglass duct boards, ensuring that the insulation system remains intact and effective. Additionally, FSK tape acts as a closure system for ASJ (All-Service Jacket) and foil-faced insulation systems, maintaining their integrity and performance. Another critical application of FSK tape is as a vapour barrier, where it provides a reliable barrier that prevents moisture ingress, ensuring the overall integrity of the insulation system.
The versatility and reliability of FSK tape make it an essential component in maintaining the efficacy of insulation systems. Its composition of aluminium foil, fibreglass scrim, and kraft paper allows it to offer durability, strength, flexibility, and effective moisture and vapour barriers. These attributes make FSK tape a valuable tool for sealing and protecting insulation systems, ensuring they perform optimally across various industrial applications.
FSK tape is available in various sizes, including 2", 4", and 6". Brands such as GGR Supplies offer high-quality FSK Aluminum Foil Reinforced Scrim/Kraft/Jacketing/Insulate Tape.
Specifications of FSK tape:
- Thickness (without liner): 6.8 mils
- Adhesion: 91 oz/in
- Tensile Strength: 27.3 lbs/in
- Temperature Range: -4°F to 176°F
Benefits of Using FSK Tape:
- Moisture and Vapour Barrier: FSK tape effectively blocks moisture and vapour, making it ideal for insulation systems and HVAC ducts.
- Strength and Durability: The combination of aluminium foil and fibreglass scrim enhances the tape’s strength and durability, allowing it to withstand mechanical stress and temperature variations.
- Sealing and Closure: Commonly used to seal seams and joints in insulation materials, FSK tape ensures a tight closure, preventing air leakage and maintaining energy efficiency.
- Flexibility: The kraft paper layer adds flexibility, enabling the tape to conform to irregular surfaces without cracking.
- Temperature Resistance: FSK tape remains effective within a wide temperature range, from -4°F to 176°F (-20°C to 80°C).
How to Apply FSK Tape:
- Applying FSK tape correctly ensures its effectiveness. Here are the steps for proper application:
- Surface Preparation: Clean the surface where you plan to apply the tape. Remove any dust, debris, or loose particles. Ensure the surface is dry and free from oil or grease.
- Cutting the Tape: Measure the length needed and cut the FSK tape using scissors or a utility knife. Leave a slight overlap at the ends for better sealing.
- Peeling the Liner: FSK tape typically has a release liner. Peel off the liner to expose the adhesive side.
- Positioning and Pressing: Align the tape over the joint or seam you want to seal. Apply even pressure along the entire length of the tape to ensure good adhesion. Use a roller or your fingers to press down firmly.
- Sealing Joints: For insulation systems, seal the seams between insulation boards or panels. Overlap the tape slightly to create a continuous barrier.
- HVAC Ducts: Seal joints and seams in HVAC ducts with FSK tape. Pay attention to corners and edges.
- Insulation Closure: Use FSK tape to close gaps between insulation materials. Ensure a tight seal to prevent air leakage.
- Temperature Considerations: FSK tape works well within its specified temperature range (-4°F to 176°F). Avoid applying it in extreme cold or hot conditions.
| Test Item | Unit | Test Standard | Test Result | Remarks |
|---|---|---|---|---|
| Adhesive | - | HOTMELT | - | - |
| Tack | - | - | - | GB4852-84 |
| Tensile strength | N/IN | ≥ 20 | 27.48 | GB7753-87 |
| 180°C Peel Adhesion | N/IN | ≥ 60 | 68.32 | GB/T2792-1998 |