| 摘要 |
<p>The sound-absorbing element (10) comprises a heavy layer (12) assembled with foam (14), and an aperture (16). The method comprises: - providing a first mould part, comprising a reception area for receiving the heavy layer (12), said reception area having at least one recess; - arranging the heavy layer (12) onto said reception area, so that aperture (16) is arranged in front of the recess; - assembling a second mould part (22B) with the first (22A) so as to delimit a mould cavity (24) between them; - making through holes in the heavy layer (12), near the aperture (16), so that each hole leads to the recess; and - injecting the foam (14) into the mould cavity (24), so that a part (18) of the foam flows through the hole so as to fill the recess, and so that this part of foam (18) filling the recess adheres to a first face (12A) of the heavy layer (12).</p> |
