| 摘要 |
The present invention relates to sound absorbing dry erase boards comprising:
- a perforated plate with a plurality of holes, the perforated plate having a first surface side and a second surface side; wherein the first surface side is opposite to the second surface side; wherein the first surface side is coated with a cured polymer composition or with vitreous enamel that provides a virtually non-porous surface, to which can be applied legible markings and writing, which can be easily erased; and
- a layer of sound absorbing material facing the second surface side of the perforated plate. |
