| 摘要 |
<p>A flexible fire barrier comprises alternating metallic layers (16) and layers of fibre glass (18). Each metallic layer comprises at least one layer of metallic foil. The fibre glass layers have a thickness of 0.5 to 5 mm and a density of 20 to 200 kg/m3 when uncompressed, and the metallic foil forming the metallic layers has a thickness of at least 20 micrometres. The ratio of the total foil thickness to the total thickness of the fibre glass layers is greater than 6 x 10-3.</p> |
