| 摘要 |
<p>A binding strip (10) for binding a stack of sheets together in a book-like fashion. The binder strip includes an elongated substrate (12) made of a formable material such as a strip of heavy paper. A relatively wide band of heat-activated adhesive (14) extends down the center of the substrate. Two relatively narrow bands of heat-activated adhesive (16) are disposed on opposite sides of the central adhesive band. The central adhesive band, which has a low viscosity at the application temperature, serves to bind the edges of the sheets together and to the substrate. The side adhesive bands, which are at least one-half as thick as the central adhesive band and which have a high viscosity at the application temperature, functions to secure the first and last sheets of the stack to the substrate. </p> |
