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    • 18. 发明公开
    • METHOD AND LINE FOR THE PRODUCTION OF RIGID PIPES
    • VERFAHREN UND FERTIGUNGSSTRASSEFÜRDIE HERSTELLUNG VON FESTEN ROHREN
    • EP2926973A1
    • 2015-10-07
    • EP15162074.7
    • 2015-03-31
    • Faraplan S.r.l.
    • LONGO, Giovanni Antonio
    • B29C47/88B29C35/16
    • B29C35/16B29C47/0023B29C47/0066B29C47/882B29C47/8835B29C47/884B29C47/8865B29C47/90B29C47/904B29C47/908B29C2035/1616B29C2035/1691B29C2793/0027
    • A method for the continuous production of rigid pipes, particularly for building or hydraulic use, comprising in sequence the steps of extruding at least one polymeric material to obtain a continuous tubular element (5) with an outer surface (6) and an inner surface (7); cooling the continuous tubular element (5); cutting the cooled continuous tubular element (5) to obtain a plurality of rigid finished pipes (1). The cooling step of the continuous tubular element (5) is accomplished by cooling at the same time both the inner surface (7) and the outer surface (6) thereof, so as to obtain the homogeneous cooling of the two surfaces (6, 7). The cooling of the inner surface (7) of the continuous tubular element (5) is accomplished by spraying thereon drops of a cooling liquid (L) having an average diameter lower than 250 µm. The quantity of cooling liquid (L) sprayed is such that it evaporates once in contact with the inner surface (7) without being accumulated in liquid form inside the continuous tubular element (5), so as the same inner surface (7) is substantially dry upon the cutting step of the continuous tubular element (5) without the use of water suction means therein.
    • 用于连续生产刚性管道,特别是用于建筑或水力应用的方法,包括以下步骤:挤出至少一种聚合材料以获得具有外表面(6)和内表面(6)的连续管状元件(5) 7); 冷却连续管状元件(5); 切割冷却的连续管状元件(5)以获得多个刚性成品管(1)。 连续管状元件(5)的冷却步骤通过内表面(7)和外表面(6)同时冷却来实现,以便获得两个表面(6,7)的均匀冷却 )。 连续管状元件(5)的内表面(7)的冷却通过在其上喷洒平均直径小于250μm的冷却液体(L)的液滴来实现。 喷射的冷却液(L)的量使其与内表面(7)接触一度蒸发,而不会在连续的管状元件(5)内积聚成液体形式,因此相同的内表面(7)基本上 在连续管状元件(5)的切割步骤中不使用其中的吸水装置而干燥。