Microperforated polymeric film for sound absorption and...

Details Microperforated polymeric film for sound absorption and... Microperforated polymeric film for sound absorption and...

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) E04B 1/84 (2006.01)

Patent

CA 2493358

Microperforated polymeric films and sound absorbers using such films are provided. The microperforated polymeric films may be relatively thin and flexible and may further include holes having a narrowest diameter less than the film thickness and a widest diameter greater than the narrowest diameter. The microperforated polymeric films of a sound absorber may also have relatively large free span portions, which, in certain embodiments, may vibrate in response to incident sound waves.

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