The sound-absorbing ceiling tile which has the barrier surface material which possesses diffuse relectance

摘要

The sound-absorbing ceiling tile includes the surface material which covers at least one main surface of the core, and the core of the sound-absorbing material which possesses two main surfaces. The surface material has the cohesion surface, diameter includes the porous flash spinning purekishihuiramento condition film - fibril seat which includes the plural pores under approximately 100nm - approximately 20,000nm and even diameter approximately 20,000nm. The surface material the diffuse relectance whose light is high and has the reflectance ratio which is larger than approximately 86%. By the use of the surface material, sound absorption of around sound at frequency under approximately 1200Hz is improved. As for the surface material, in order to offer the barrier for the particle which includes the moisture, and the microbe, the ceiling tile purity although you use inside important environment, it is suitable.