| 摘要 |
<p>A document-holder is formed from a blank which may be made of polypropylene sheet. The document-holder comprises a front wall (1) which is pivotally connected with a rear wall(2), the front wall and the rear wall each carry at each side a triangular reinforcing element made of three inter-connected panels (10,11,13) formed integrally with the respective wall. The reinforcing elements are brought into abutment when the front wall (1) is moved to its desired position relative to the rear wall(2) and are then interconnected by means of a tab (12). <MATH></p> |
