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    • 4. 发明授权
    • Method and apparatus for forming inflation film
    • 用于形成吹塑薄膜的方法和装置
    • US4473527A
    • 1984-09-25
    • US438707
    • 1982-11-02
    • Takumi FujisakiToshiro OzakiTadao Adachi
    • Takumi FujisakiToshiro OzakiTadao Adachi
    • B29C55/00B29C47/88B29C47/90B29C49/00B29C55/28B29L7/00B29D7/22
    • B29C47/883B29C47/0026B29C47/8835B29C47/903B29C47/907
    • In the manufacture of an inflation film for forming a thermoplastic resin having a melt tension of not more than 4 g into a tubular bubble, a tubular bubble extruded from an extruding nozzle is cooled from the inner circumferential surface thereof by air supplied from a first air supply opening. The outer circumferential surface of the bubble is cooled with air from a first external air-cooling ring arranged at the outside of the bubble. The first air-cooling ring has a guide plate for guiding the bubble, a second air supply opening for supplying air between the guide plate and the bubble from an inlet port arranged at the lower end of the guide plate, and a third air supply opening for supplying air to the bubble from an outlet port arranged at the upper end of the guide plate. The bubble which is cooled by the first external air-cooling ring is further cooled by the air supplied from a second external air-cooling ring. The bubble is solidified.
    • 在制造用于将熔体张力不大于4g的热塑性树脂形成用于管状气泡的膨胀膜的制造中,从挤出喷嘴挤出的管状气泡从其内周表面通过从第一空气供应的空气冷却 供应开放。 气泡的外圆周表面由设置在气泡外部的第一外部空气冷却环的空气冷却。 第一空气冷却环具有用于引导气泡的引导板,用于从布置在引导板的下端的入口端口在引导板和气泡之间供应空气的第二空气供应开口,以及第三供气开口 用于从布置在引导板的上端处的出口插入气体到气泡。 由第一外部空气冷却环冷却的气泡由从第二外部空气冷却环供应的空气进一步冷却。 泡沫凝固。