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apparatus and process for stretch across and guide molecolarmente tape or flexible network of continuously advancing

机译:延伸并引导连续的分子丝带或柔性网络的装置和方法

摘要

For the transverse stretching of the web, multiple-disc stretching devices have been used hitherto. The latter cause an intensive bending back of the web in the central region. Furthermore, sudden stretching initially occurs during this, specifically at the point where the web reaches the circumference of the discs, this amount of stretching being reduced at the moment of the further passage of the web through the stretching device. These disadvantages are avoided in that one of the rows of discs is now replaced by pressure elements (11) which are stationary in operation and are provided with sliding surfaces (24) which are curved in a concave manner towards the web and mesh with the other rotating row of discs (10). The meshing engagement of the stationary pressure elements (11) with the rotating discs takes place from a zero position (25) as far as a maximum degree and thus from zero stretching as far as maximum stretching. The position of the pressure elements (11) which are stationary during operation with respect to the rotating row of discs (10) can be adjusted. This process can be used in particular for stretching plastic mesh structures.
机译:迄今为止,对于幅材的横向拉伸,已经使用了多盘拉伸装置。后者导致纤网在中心区域强烈向后弯曲。此外,在此期间首先发生突然的拉伸,特别是在幅材到达盘的圆周的点处,在幅材进一步通过拉伸装置时,这种拉伸量减小。避免了这些缺点,因为现在这排圆盘中的一排被压力元件(11)代替,压力元件(11)在操作中是固定的,并且设有滑动表面(24),该滑动表面(24)以凹入的方式向腹板弯曲并且与另一个啮合旋转的一排圆盘(10)。固定压力元件(11)与旋转盘的啮合接合从零位置(25)达到最大程度,从而从零拉伸直至最大拉伸。可以调节在操作过程中固定的压力元件(11)相对于转盘(10)的位置。该方法尤其可以用于拉伸塑料网状结构。

著录项

  • 公开/公告号IT1099726B

    专利类型

  • 公开/公告日1985-09-28

    原文格式PDF

  • 申请/专利权人 MERCER PATENTS LTD;

    申请/专利号IT19780028749

  • 发明设计人

    申请日1978-10-13

  • 分类号B29F;

  • 国家 IT

  • 入库时间 2022-08-22 08:09:10

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