EP 2959696 B1 20181128 - METHOD FOR STIFFENING THE MEMBRANE OF AN ACOUSTIC TRANSDUCER
Title (en)
METHOD FOR STIFFENING THE MEMBRANE OF AN ACOUSTIC TRANSDUCER
Title (de)
VERFAHREN ZUR VERSTEIFUNG DER MEMBRAN EINES SCHALLWANDLERS
Title (fr)
PROCÉDÉ DE RIGIDIFICATION DE LA MEMBRANE D'UN TRANSDUCTEUR ACOUSTIQUE
Publication
Application
Priority
- DE 102012018765 A 20120924
- DE 2013100328 W 20130913
Abstract (en)
[origin: WO2014044251A2] The invention relates to a method for stiffening the membrane of an acoustic transducer, which method also enables stiffening of the membrane of an acoustic transducer at a later stage, such that said method can also be applied as an after treatment for improving the frequency range of existing loudspeakers. This is achieved by the application of a stiffening mesh on the front and/or rear face of the membrane of an acoustic transducer, the subsequent coating of the membrane using applied stiffening mesh comprising at least two synthetic resins, wherein in a first stage a polyester resin layer is applied and cured, which is then coated and joined by an epoxy resin in the second stage and the final application of an acrylic coating on the front and/or rear face of the membrane.
IPC 8 full level
H04R 31/00 (2006.01); H04R 7/02 (2006.01); H04R 7/10 (2006.01); H04R 7/12 (2006.01)
CPC (source: EP)
H04R 7/02 (2013.01); H04R 31/003 (2013.01); H04R 7/10 (2013.01); H04R 7/125 (2013.01); H04R 2307/025 (2013.01); H04R 2307/029 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102012018765 B3 20140220; EP 2959696 A2 20151230; EP 2959696 B1 20181128; WO 2014044251 A2 20140327; WO 2014044251 A3 20140522
DOCDB simple family (application)
DE 102012018765 A 20120924; DE 2013100328 W 20130913; EP 13826715 A 20130913