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    • 70. 发明申请
    • METHOD AND DEVICE FOR THE EXTRUSION OF COVERINGS IN SHEETS OF LARGE DIMENSIONS
    • 用于在大尺寸表中挤出覆盖物的方法和装置
    • WO2002078936A1
    • 2002-10-10
    • PCT/IB2002/001047
    • 2002-03-27
    • BRICK SERVICE S.R.L.FOPPIANO, Giacinto
    • FOPPIANO, Giacinto
    • B29C69/00
    • B29C69/003B28B1/40B28B11/14B29C66/435B29L2007/002B29L2031/10
    • A device for the production of coverings in sheets, for example sheathing of clay or polymeric materials, comprising an extrusion head (2) suitable to extrude a strip (6) of extrusible material, and a drum (7) revolving on its longitudinal axis. The extrusion head is made to slide longitudinally to the axis of the drum (7) while the latter revolves so as to helically wind the strip of extruded material (6) on the drum. Subsequently cutting means (14) cut the helically wound strip (6) according to a line transverse to the turns of the wound helix, and preferably along a line parallel to the axis of rotation of the drum. The layer of extruded material formed of the cut helix is deposited and extended on a conveyor belt (12) to obtain a large flat sheet which is also thin. A method for the production of coverings in sheets is also described.
    • 一种用于生产片材覆盖物的装置,例如粘土或聚合物材料的护套,包括适于挤出可挤出材料的条带(6)的挤出头(2)和在其纵向轴线上旋转的滚筒(7)。 挤出头被制成纵向滑动到滚筒(7)的轴线,而后者旋转以便将滚筒上的挤出材料条(6)螺旋地卷绕。 随后,切割装置(14)根据垂直于卷绕的螺旋线的匝的线切割螺旋缠绕的条带(6),优选地沿着平行于滚筒的旋转轴线的线切割。 由切割的螺旋形成的挤压材料层被沉积并延伸在传送带(12)上以获得也是薄的大的平板。 还描述了用于生产片材中的覆盖物的方法。