SOUND ABSORBER, SOUND ABSORPTIVE PANEL USING THE SAME, AND METHOD OF MANUFACTURING SOUND ABSORBER

• Main Authors: OBATA JINJU, SATO TOMOYUKI, MURASE MAO, ICHIKAWA TARO, YOSHIZAWA HIDENORI, TAKAKU SHOICHI, NAKAJIMA TOMONORI
• Format: Patent
• Language: English; Japanese
• Published: 03.04.2023
• Subjects: ACOUSTICS; ACOUSTICS NOT OTHERWISE PROVIDED FOR; BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; MUSICAL INSTRUMENTS; NON-WOVEN FABRICS; PHYSICS; SOUND-PRODUCING DEVICES; TEXTILES; TRIMMINGS; WADDING

To provide a sound absorber which hardly decrease in sound absorption coefficient even in an environment where there is much moisture.MEANS FOR SOLVING THE PROBLEM: A sound absorber according to the present invention consists of inner cotton including fiber made of at least polyester resin and a skin material enveloping the inner cotton, and a skin is made of non-woven fabric including fiber made of polypropylene resin, and has an opening at least in a part of the skin material.SELECTED DRAWING: Figure 1 【課題】水分が多い環境下でも吸音率が低下し難い吸音材を提供する。【解決方法】本発明の吸音材は、少なくともポリエステル系樹脂からなる繊維を含む中綿と、該中綿を内包する表皮材とからなり、該表皮はポリプロピレン系樹脂からなる繊維を含む不織布からなり、該表皮材の少なくとも一部に開口を有することを特徴とする。【選択図】図１