Slit resonant acoustic board

Slit resonant acoustic board

CN
  • CN 202,689,224 U
  • Filed: 05/09/2012
  • Issued: 01/23/2013
  • Est. Priority Date: 05/09/2012
  • Status: Active Grant
First Claim
Patent Images

1. slit resonance acoustic board, it is characterized in that:

  • comprise the flame-retardant board body and be arranged at the fire retardant nonwoven fabric of described this surface layer of flame-retardant board, the wherein one side of described flame-retardant board body is provided with the strip groove another side and is provided with the circular hole that communicates with described strip groove.

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