| 摘要 |
PCT No. PCT/GB95/01845 Sec. 371 Date Jan. 10, 1997 Sec. 102(e) Date Jan. 10, 1997 PCT Filed Aug. 3, 1995 PCT Pub. No. WO96/04121 PCT Pub. Date Feb. 15, 1996Polyvinyl alcohol is processed into fiber or pellets for further processing, or directly into water-soluble film, in a screw-and-barrel extruder, which has a slow temperature rise and a mild kneading action achieved by a non-stick coating applied to the screw. |
