首页>
外国专利>
SOUND ABSORPTIVE SHEET HAVING MICRORESONANCE STRUCTURE AND METHOD OF MANUFACTURING THE SAME AND SOUND ABSORPTION TYPE SOUNDPROOF PANEL USING THE SAME
SOUND ABSORPTIVE SHEET HAVING MICRORESONANCE STRUCTURE AND METHOD OF MANUFACTURING THE SAME AND SOUND ABSORPTION TYPE SOUNDPROOF PANEL USING THE SAME
展开▼
机译:具有超音波结构的吸声板及其制造方法和使用该结构的吸音型防音板
展开▼
页面导航
摘要
著录项
相似文献
摘要
Disclosed are a sound absorptive sheet capable of improving the performance of sound absorption up to a low frequency range based on a micro-resonance principle by including a micro-resonance structure, to a method for manufacturing the sound absorptive sheet, and a soundproof panel using the method. According to the present invention, the sound absorptive sheet comprises multiple uneven patterns having a convex part and a concave part, on one surface of a porous base material. The area ratio of the concave part, determined by formula 1 below, is 40 to 99%. The area corresponding to the concave part has lower air penetrability than the area corresponding to the convex part. [Formula 1] Area ratio of concave part = [area of concave part]/[area of porous base material].;COPYRIGHT KIPO 2014
展开▼