G - Physics – 10 – K
Patent
G - Physics
10
K
G10K 11/16 (2006.01)
Patent
CA 2337614
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.
La présente invention concerne des films polymériques microperforés et des absorbeurs de son utilisant de tels films. Ces films polymériques microperforés peuvent être relativement minces et souples et peuvent comprendre des trous dont le diamètre le plus petit est inférieur à l'épaisseur du film, et dont le diamètre le plus grand est supérieur au plus petit diamètre. Les films polymériques microperforés d'un absorbeur de son peuvent aussi présenter de grandes portions libres qui, dans certaines réalisations, peuvent vibrer en réponse à des ondes sonores incidentes.
Minnesota Mining And Manufacturing Company
Oyen Wiggs Green & Mutala Llp
LandOfFree
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