| 摘要 |
<p>PURPOSE:To hold a thin film sheet on a stable plane, without using a substrate, by forming a screen holding frame with materials having a channel-shaped section and providing many projections on the face brought into contact with the screen. CONSTITUTION:A screen holding frame 2 is formed with materials such as plastic having a channel-shaped section, and many projections 22 for hooking screen sheet materials 1 are provided in a side 21 of the aperture side of the channel shape, and such proper flexibility is given to the side 21 that the sheet is held plane. Sheet materials 1 are provided with holes 21 engaged with projections 22. When sheet materials 1 are stretched on the holding frame 2 and are hooked by projections 22 and are fixed by slip-off preventing members 3, a proper tension is given to the sheet 1 by the flexible holding frame 2 having the channel- shaped section and is held easily and surely on a stable plane.</p> |
