| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
In a continuous process for mfg accoustical tiles in a water-felting process which includes - Forming an aq slurry comprising expanded perlite, clay & binder comp selected from: starch, latex, cellulose fiber & mixt with water - Continuously flowing said slurry onto a moving foraminous support wire to form a cake - Dewatering said cake to form a basemat - Drying basemat to produce said tile The IMPROVEMENT comprising, in order to enable an increase in the speed of the process, forming said slurry from expanded perlite having d. 9-20 pounds/cubic foot, & operating said process at speed selected to continuously dewater said cake to form high solids basemat & to continuously dry water from said basemat to produce said tile |
| PATENT PHOTOCOPY | Available on request |
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