|Title||Sound Absorbing Material, A Method For Production Of The Same And Device For Cutting Apertures In The Sound Absorbing Material|
|Authors||Toulson, R., Flotre, B. and Cirstea, S.|
|Patent applicant||Micro Laser Technology GmbH, Nowofol, Kunststoffprodukte & Co KG GmbH, ACOUSTIC GRG PRODUCTS LTD. DeAmp AS|
Sound absorbing material for use in rooms inside buildings. The material comprises a continuous polymeric film (11) having smooth surfaces, said film having a thickness (t) of about 0.1 to 0.3 mm. The film is provided with numerous substantially parallel discontinuous microslits (12) with a degree of perforation of from 0.3-3%. The microslits are cut with laser devices to produce a highly smooth and level surface. The film is tensioned in a frame (16) with a level film surface or curved film surface.
|Keywords||Sound Absorbing Film|
|Published||16 Feb 2016|
|Web address (URL)||https://worldwide.espacenet.com/publicationDetails/biblio?CC=US&NR=2017044761A1&KC=A1&FT=D&ND=3&date=20170216&DB=&locale=en_EP|