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    • 5. 发明专利
    • Manufacture of film
    • 电影制作
    • JPS61110520A
    • 1986-05-28
    • JP23239084
    • 1984-11-06
    • Fuji Photo Film Co Ltd
    • SAITO HIROKISUZUKI YUJIONO KAZUHIRO
    • B29C41/12B29C41/26B29C41/28B29C41/46
    • B29C41/28
    • PURPOSE:To manufacture foamless film at high speed, by a method wherein a temperature rise of a part of a supporting material surface made of either a band or a drum whereon dope is not casted yet is prevented, in a solvent film manufacturing method. CONSTITUTION:Air shield plates 10a, 10b whose cross sections are in U-shaped state are kept provided so as to cover only a band part 2a wherein dope 3 is casted. The dope 3 made of cellulose acetate is casted on a support surface made of an endless band 2, hot air is fed to the air shield plates 10a, 10b and a film is manufactured by volatilizing a solvent. Although a side edge part of the dope becomes a high temperature than the central part and is apt to generate foaming, as a temperature rise of the side edge part is prevented by the air shield plate, a matter like this does not happen, dryness can be performed at a higher temperature than usual and a film manufacturing rate can be improved.
    • 目的:在溶剂膜制造方法中,通过以下方法制造无定形薄膜的方法,通过这样一种方法,可以防止由涂料的带或滚筒未被铸造而成的支撑材料表面的一部分的温度升高。 构成:保持横截面为U形状态的挡风板10a,10b,以仅覆盖其中铸造涂料3的带部分2a。 由乙酸纤维素制成的涂料3浇铸在由环形带2制成的支撑表面上,热空气被供给到空气屏蔽板10a,10b,并且通过挥发溶剂来制造薄膜。 虽然涂料的侧边部分变得比中心部分高​​的温度并且易于产生发泡,但是由于通过防风板防止侧边缘部分的温度升高,所以不会发生这样的事情,干燥可以 在比通常更高的温度下进行,并且可以提高膜的制造速度。