| 摘要 |
Nobel acrylonitrile film was obtd. from solidifying the soln. of acrylonitrile polymer in aq. solidifying bath, adjusting water content of film contg. water to 20-100 wt.% (to dryed polymer), stretching the film in a vertical direction by use of 65-90≦̸C roll, readjusting water content by 100-180≦̸C air to 10-40 wt.%, and tenter stretching of the film. Using acrylonitrile is homopolymer of acrylonitrile or copolymer (contd. 85 wt.% acrylonitrile; copolymerize comonomer is e.g. Me, Et, propyl, phenyl, ethylmeta, hexylmeta acrylate.
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