Fasteners and Sealing
had to be used rather than traditional 75mm thick stone. Consequently, traditional anchors could not be used to secure the panels because there was insufficient material depth.
After much research and testing, bigHead bonding
fasteners were embedded in the composite stone panels. Invisible from the facing side, threaded bolts extended from bonding fastener to be bolted to the building structure. Before installation the tensile loading was tested to make
sure the fastening solution was strong enough. Incredibly, the bigHead Bonding Fasteners withstood 330kg tensile load before being ripped out of the panel.
Composite materials BigHead fasteners were invented in 1966 to solve a fastening problem that most traditional fasteners could not; How to achieve a strong and efficient fastening in a composite material.
BigHead came up with a unique design and the first
ever bonding fastener: a flat perforated head which locks the product securely into position and spreads the load. They are used by manufacturers and designers in the automotive, composites, construction, marine, utility, petrochemical and general manufacturing industries. These include Sunseeker Yachts and Aston Martin. bigHead is a BMW approved supplier to Rolls Royce Motors. l
Enter 45 or ✔ at
www.engineerlive.com/ede
Matthew Stevens is Managing Director, bigHead Bonding Fasteners Ltd, Bournemouth, Dorset. UK.
www.bigHead.co.uk
Fig. 2. The atrium cladded with lightweight stone panels.
We solve your design and productivity issues Let us add value to your industry by solving your design and productivity issues
through materials technology and process improvement.
Techsil are leading European Suppliers of Adhesives, Encapsulants, Sealants, Coatings and Casting resins for industries such as Automotive, Aerospace, Electronics and Rapid Prototyping.
Our product ranges include: RTV Silicones, Polyurethanes, UV Curing materials, Hot Melt Adhesives, MS Polymers, Epoxies, Cyanoacrylates and Acrylic Adhesives.
We stock products from leading suppliers such as Momentive Performance Materials, ThreeBond, Devcon, Permatex, BJB Enterprises and Power Adhesives.
Industrial Suppliers of Sealants and Adhesives
+44 (0)1789 773232 •
technical@techsil.co.uk •
www.techsil.co.uk Circle 45A or ✔ at
www.engineerlive.com/ede
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