| 摘要 |
A fluorescent foil (5, 5'), especially of the kind made from a translucent/transparent foil material admixed colouring matter and fluorescent matter, and wherein the foil (5, 5'), at least at one side thereof, is provided with a translucent layer (4), e.g. consisting of bencotriasole or benzophone, which is impermeable or substantially impermeable to ultraviolet rays (UV-rays). Preferably, the layer (4) is placed between the fluorescent foil (5, 5') and a translucent adhesive layer (2). Also, the invention comprises signboards, e.g. name and/or advertisement signboards, comprising a translucent disc (6) having attached thereto a fluorescent foil (5, 5') as defined above, wherein the translucent disc (6), at both sides thereof, has attached thereto fluorescent foils (5, 5') having different colour or colours on the two sides, and being cut to letter, figure or other constituents which, at one side (6') of the translucent disc (6), are attached in correctly facing design, while the cooperating/completing letter, figure or other constituents in opposing positions on the other side (6'') of the translucent disc (6), are attached in mirror-symmetrical relationship thereto. |
