A hanger for fluted polypropylene board has head and a shaft, the shaft having at least one barb extending outwardly therefrom. A variation of the hanger for a foam board comprises a head and a shaft with the shaft having a screw thread located thereon, the screw thread stopping short of a tip portion of the shaft.
1. A sign and a hanger combination, said sign comprising;
first and second layers of a plastic material, a plurality of parallel ribs extending between said first and second layers of plastic material to thereby form a plurality of parallel channels between said first and second layers;
at least one hanger comprising a bead and a shaft, said shaft having at least first and second barbs extending outwardly therefrom, said first and second barbs being located on opposite sides of said shaft, said shaft being inserted in said board such that said shaft and barbs pierce through at least one of said ribs, said hanger being supported by an upper side of said barbs engaging one of said pierced ribs.
2. The combination of claim 1 wherein said shaft has third and fourth barbs protruding from opposite sides of said shaft and each of said first, second, third and fourth barbs having a substantially identical configuration and dimensions.
3. The combination of claim 1 wherein said shaft has a pointed tip.
4. The combination of claim 1 wherein each of said barbs has a generally V-shaped configuration.
5. The combination of claim 4 wherein the exterior tips of said V-shaped barbs is spaced apart by a distance of between 2.5 mm and 7.5 mm.
6. The combination of claim 1 wherein said hanger is formed of a plastic material.
7. The combination of claim 1 wherein said head has an aperture extending therethrough.
8. The combination of claim 4 wherein said exterior tips of said V-shaped barbs is spaced apart by a distance of approximately 5 mm.