| 摘要 |
<p>The multi-purpose postal device is designed to provide a re-usable surface whilst serving as either a letter card or a closed envelope, the majority of its surfaces being usable or re-usable. It comprises a sheet which is divided into three equal panels (1,2,3) by folds and incorporates fixed or demountable sealing wings (4,5). 'L' section pieces with pref. non-polymerisable adhesive on the external leg faces are used to form the wings, one external leg face being stuck to a free edge of the centre panel (2). The internal surface may incorporate an adhesive strip (10). An envelope may be formed by folding the wings in and sticking an outer panel (3) onto them.</p> |
