FIELD: chemical industry.
SUBSTANCE: invention relates to plastic article made in middle part in form of hollow tubular element. Each of two ends of hollow tubular element is closed with a solid body, at first end of tubular hollow element there is a displacing body, which is in section of transition from hollow element to first solid body, and at second end of hollow tubular element is a cavity, which passes between tubular hollow element and second solid body. Invention also relates to process plant.
EFFECT: use of present invention provides a plastic article, which has low weight, high stability of shape and high accuracy of compliance with preset sizes.
20 cl, 17 dwg
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