COMPOSITION AND AQUEOUS SUSPENSION THEREOF FOR USE IN MAKING SOUND ABSORBING TILES USING A FULLING PROCESS, COMPOSITION FOR MAKING A SOUND ABSORBING CEILING AND CONTINUOUS METHOD OF MAKING SOUND ABSORBING TILES USING A FULLING PROCESS

摘要

The invention relates to a composition, slurry composition and continuous process for making an acoustical tile in a water-felting process, said composition comprising perlite which has been treated to reduce water retention.