| 摘要 |
Method of forming a beater-saturated non-woven sheet by treating a slurry of papermaking fibers with alum and either sodium carbonate or a mixture of sodium bicarbonate and sodium hydroxide to achieve a pH in the range of about 7-9 followed by adding a binder latex which deposits on the fibers, and finally forming a sheet from the resulting slurry. The fiber may be cellulosic, glass asbestos, polyethylene, polypropylene polyester or polyvinylchloride. |
