| 摘要 |
An environmentally friendly binder for a calendar has a bar of a suitably biodegradable material. The bar may be of wood, cardboard, fibrous plant material, or a biodegradable synthetic plastics material. It is non-metallic. The bar may be secured directly to a calendar sheet or via securing pieces of a fabric like material. The securing pieces may be strips or tabs. The binders may be supplied in roll form, with the bars fast with a web or ribbons. The bars or securing pieces may be adhesively secured to the calendar sheets. An apparatus for securing the environmentally friendly binders to a calendar sheet has an adhering means for adhesively securing the bars or securing pieces to the calendar sheets. |
