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BUBBLE EXTERNAL COOLING DEVICE FOR INFLATION FILM FORMING DEVICE AND INFLATION FILM FORMING DEVICE USING THE BUBBLE EXTERNAL COOLING DEVICE
BUBBLE EXTERNAL COOLING DEVICE FOR INFLATION FILM FORMING DEVICE AND INFLATION FILM FORMING DEVICE USING THE BUBBLE EXTERNAL COOLING DEVICE
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机译:用于充气膜形成装置的鼓泡外部冷却装置以及使用该鼓泡外部冷却装置的充气膜形成装置
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摘要
PROBLEM TO BE SOLVED: To enable steady and high-speed forming with low pressure loss by improving two-stage blowing-off air ring structure. ;SOLUTION: An outer lip of a lower-stage ring-shaped blow-off port 20 near a ring-shaped discharging port 11 is formed on a lower end part 31a of bubble- side inclined inner surface 31 of a high ring-shaped block body 30. The bubble- side inclined inner surface 31 has a ring-shaped inner surface with diameters gradually increasing upward, where air stream is guided along an entire outer periphery of a bubble B. An inner lip 23 of an upperstage ring-shaped blow-off port 21 is formed on the upper end of the ring-shaped block body 30. On an outer periphery of an outer lip 24 of the upper-stage blow-off port 21, an auxiliary lip 25, which can be adjusted by moving vertically, is provided. A ring-shaped pressure chamber 26 of variable capacity is formed for opening toward the bubble B side between the outer lip 24 and the auxiliary lip 25.;COPYRIGHT: (C)1998,JPO
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