| 摘要 |
<p>Felt comprising an expandable polymer or copolymer, 10% to 30% by weight, which, in the condensation or fusion thereof, liberates gas for the formation of microcells, a thermosetting binder or conglomerant, 20% to 45% by weight, the balance, making up 100%, being fibres of recycled origin. In an alternative embodiment the felt presents an anti-moisture surface barrier or addition of fireproofing agent.</p> |
