Sound-absorbing polymer foam molded article

Details Sound-absorbing polymer foam molded article Sound-absorbing polymer foam molded article

C - Chemistry, Metallurgy

08

J

C08J 9/34 (2006.01) B29C 44/56 (2006.01) C08J 9/38 (2006.01) G10K 11/162 (2006.01) G10K 11/172 (2006.01)

Patent

CA 2394760

The invention relates to a polymer foam molded article with an increased sound absorption capacity in the frequency range of more than 1500 Hz. In order to increase the sound absorption capacity, the compressed surface layer of the molded article is perforated.

L'invention concerne une pièce moulée en mousse de polymère présentant une capacité accrue d'absorption des sons, dans la plage de fréquence supérieure à 1500 Hz, l'augmentation de la capacité d'absorption des sons étant obtenue par une perforation de la couche comprimée se trouvant à la surface de la pièce moulée.

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