Method and apparatus for shaping of tubular film

Details Method and apparatus for shaping of tubular film Method and apparatus for shaping of tubular film

B - Operations, Transporting

29

D

18/526

B29D 23/03 (1980.01)

Patent

CA 1099467

Abstract of the Disclosure Tubular films having superior mechanical proper-ties and extremely small deviation in thickness can be produced according to a method and an apparatus in which a means of downwardly tapered hollow inverted-truncated-conical shape is placed on the top of an annular die and used as a means for stabilizing bubbles of olefinic polymer synthetic resins which are extruded from the annular die in an air-cooling inflation process with a take-up speed of about 5 m to 50 m per minute.

298045

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