Weldable Hook and Loop Fasteners
When attaching a Hook and Loop Fastener to a flexible material, sometimes traditional methods such as sewing, pressure sensitive adhesives (PSA), and stapling just don’t work. For some manufacturers, a Weldable Backed Hook and Loop is the preferred option. Even though this process can be more involved than traditional PSA applications, it has many benefits.
Weldable adhesive provides a permanent, waterproof adhesion that is more durable than other attachment methods and extends the lifecycle of the finished product.
Reasons to use weldable adhesive:
- Stronger Bond: Weldable adhesives offer a heat-activated, permanent bond, ideal for industrial applications. This results in a more robust connection than stitching, which may loosen over time.
- Waterproof Seal: Unlike sewing, which punctures the material and can compromise its waterproof qualities, RF welding creates a seamless, water-resistant seal—perfect for outdoor or moisture-sensitive environments.
- Time Efficiency: Applying weldable hook and loop fasteners using automated machinery is faster and more precise than manual sewing, making it suitable for mass production.
- Longer Product Lifecycle: Sewing can weaken the fastener over time due to thread breakage. In contrast, weldable adhesives extend the life of the fastener and the final product.
How do you RF Weld (Heat Weld)?
RF welding involves positioning the fastener on the substrate, then applying heat and pressure to activate the adhesive. This method is known for its durability and is commonly used in large-scale applications, including:
- Tents, shelters, and structures
- Banners and billboards
- Tarps and covers
- Seat covers
- Insulation blankets and panels
- Inflatables
Welding Techniques
- Double Bar Welding: This method welds both edges of the hook or loop simultaneously, increasing efficiency and precision while preventing puckering between weld points.
- Wedge Bar Welding: In this method, a heated wedge tool is inserted between the fastener and substrate. While useful, this technique requires operator skill and is more sensitive to ambient conditions, which may affect bond consistency.
Common Applications and Industries
Halco’s weldable hook and loop fasteners are trusted by manufacturers globally in industries such as outdoor equipment, automotive, and industrial textiles. The versatility and performance of weldable adhesives make them an excellent choice for products exposed to harsh conditions.
Not sure if weldable adhesive will work on your substrate? Contact us to learn more about this process. We are happy to discuss your project and the options available. Get Expert Advice on Weldable Fasteners