| 摘要 |
A binder assembly system for on-site binding together business reports (30) using an elongated, single-piece, colored, decorative, cover-less, binding spine (10) unitarily made of special, extruded, flexible, resilient, reinforced polypropylene plastic material having a minimum wall thickness of about four hundredths of an inch, cuttable by the end user to any desirable length with common office scissors or paper cutter. The "U"-shaped spine has sufficient strength to accomplish the edge binding and self-supporting rigidity, while also having the resiliency to bend when subjected to typically incurred loads, but returning to its original configuration when the load is released, preventing permanent crimping of the spine during, for example, normal envelope mailing of the bound material. A cool-melt, heat-flowable glue is applied to the spine's inside bottom at spaced spots (14) used in a heating step to affix the inserted paper to the spine upon cooling. |
