Blow molding method and apparatus, and metallic mold apparatus and a needle blow nozzle
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United States of America Patent
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app pub date -
May 17, 2006
filing date -
Jul 22, 2002
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Abandoned
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Abstract
The object of the present invention is to cool forcibly the upper and the lower clamp portions of the parson using the upper and the lower blow holes of respective needle blow nozzle synchronously, the metallic mold is cooled by using the cooling apparatus inside the wall, thereby shorten molding cycle time and stabilize the quality. The blow molding method and apparatus, and metallic mold and needle blow nozzle of the present invention are constructed so that an upper and a lower needle blow nozzles (1a, 1) are inserted into said parison (59) to cool respective clamp portion (59c, 59d) forcibly, the discharge nozzle (1b) discharge air, and the molding parson (59) in the internal side of the metallic mold (40A) is cooled by the cooling apparatus (600) disposed inside of the metallic mold (40A), so as to shorten molding cycle time.
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