Wooden pegs are one of the oldest known fasteners in the world, but the Beck Fastener Group in Austria put a very modern spin on the product with its LignoLoc® collated wooden nails. The headless nails are made from straight, high-density, indigenous beech wood, compressed with a phenolic resin to yield a fastener with a tensile strength similar to aluminum nails. A specially designed nail gun shoots the nails into wood.
One advantage to LignoLoc nails is that there is no thermal transfer, according to Chad M. Giese, national sales and product manager for FASCO American, which distributes Beck’s products in North America. “They are only as conductive as the material they’re fastening,” he says. “Metal nails transmit hot and cold from the inside of the building to the outside – or vice versa – and that creates condensation, which can lead to rot around the nail.”
In addition, LignoLoc nails can be sanded or cut without damaging any bits or saws used during construction. Plus, driving the nails into wood creates “lignin welding,” a bond formed when the heat of the friction of the driven nail melts the lignin, an organic polymer found in the cell walls of wood.
LignoLoc nails have been used for fastening cross-laminated timber and in the production of ecological furniture and high-end green buildings. Wooden pallet manufacturers are another potential market, since they can shred their products after they’re used without having to remove metals in advance.