CN110965205A - 用于制造由纤维制成的非织造织物幅的方法和设备 - Google Patents

用于制造由纤维制成的非织造织物幅的方法和设备 Download PDF

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CN110965205A
CN110965205A CN201910922130.3A CN201910922130A CN110965205A CN 110965205 A CN110965205 A CN 110965205A CN 201910922130 A CN201910922130 A CN 201910922130A CN 110965205 A CN110965205 A CN 110965205A
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nonwoven web
calender roll
reinforcing
during
fibers
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CN110965205B (zh
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D·弗赖
H-G·赫斯
M·马斯
M·诺伊恩霍费尔
M·尼奇克
C·诺亚克
H·科普
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Machine Factory Of Leffinhauser Co Ltd
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Abstract

本发明涉及一种用于制造由纤维制成的非织造织物幅的方法,其中,将纤维纺出并且冷却并且作为纤维铺放层铺放在铺放带上。设置有至少一个用于预加固非织造织物幅的预加固装置,并且设置有至少一个连接于所述预加固装置下游的用于加固非织造织物幅的第一砑光辊。将所述第一砑光辊在连续的工艺运行中更换成第二砑光辊。在此,将第一砑光辊从非织造织物幅移除并且在砑光辊更换期间加强非织造织物幅的预加固。在引入所述第二砑光辊之后再次减少非织造织物幅的预加固。

Description

用于制造由纤维制成的非织造织物幅的方法和设备
技术领域
本发明涉及一种用于制造由纤维、尤其是由塑料纤维制成的非织造织物幅的方法,其中,将纤维纺出并且冷却并且作为纤维铺放层或者说作为非织造织物幅铺放在铺放器上、尤其是铺放带或者说铺放筛带上,其中,设置有至少一个用于预加固非织造织物幅的预加固装置并且设有至少一个连接于所述预加固装置下游的用于加固非织造织物幅的第一砑光辊。本发明还涉及一种用于制造由纤维制成的非织造织物幅的设备。
背景技术
上述类型的方法和设备在实践中以不同的实施形式已知。在借助砑光辊对非织造织物幅进行砑光的过程中,在连续的运行中可能需要更换砑光辊。例如当砑光辊的特性考虑到待制造的非织造织物幅应发生变化时出现这种情况。例如当砑光辊应被更换以改变非织造织物幅的触感、柔软度和外观时出现这种情况。砑光辊更换也可以由于砑光辊磨损而进行。这种砑光辊更换的问题在于,对于所述更换通常必须中断设备的连续运行并且因此造成不利的长时间的生产中断。
已经提出一些解决方案,在这些方案中一个砑光辊对将要更换的上部砑光辊偏转出并且替代于此地将第二上部砑光辊偏转到下部砑光辊上。通过这种解决方案可以缩短在非织造织物幅制造时的生产中断。尽管如此,在此也必须中断运行,从而存在停工时间,在所述停工时间中不能进行砑光并且因此不能进行按照规定的非织造织物生产。此外,所述提出的解决方案易受干扰并且具有约束。因此,在功能可靠的砑光辊更换方面存在改进需求。
发明内容
本发明基于以下技术问题,即给出一种开头所述类型的方法,在该方法中可以在连续的运行中在设备没有停机时间的情况下实施简单、顺利且功能可靠的砑光辊更换。本发明还基于以下技术问题,即给出一种相应的设备。
为了解决所述技术问题,本发明教导一种用于制造由纤维、尤其是由塑料纤维制成的非织造织物幅的方法,其中,将纤维纺出并且冷却并且作为纤维铺放层或者说作为非织造织物幅铺放在铺放器上、尤其是铺放带或者说铺放筛带上,
其中,设置有至少一个用于预加固非织造织物幅的预加固装置并且设有至少一个连接于所述预加固装置下游的用于加固非织造织物幅的第一砑光辊,
其中,将所述第一砑光辊在连续的工艺运行中更换成第二砑光辊(砑光辊更换),其中,将第一砑光辊从非织造织物幅移除,并且在砑光辊更换期间加强非织造织物幅的预加固,并且在引入所述第二砑光辊之后再次减少非织造织物幅的预加固。
适宜地,利用由上部砑光辊和与其相互作用的下部砑光辊组成的砑光辊对工作,以用于加固非织造织物幅。两个砑光辊构成用于输送和加固非织造织物幅的辊隙。至少一个砑光辊可以具有刻纹并且至少一个砑光辊优选被加热。根据本发明的优选的实施形式,将所述砑光辊对的第一上部砑光辊更换成第二上部砑光辊。为此适宜地,将所述第一上部砑光辊偏转出并且因此将该上部砑光辊从下部砑光辊移除。优选地,随后将第二上部砑光辊向内偏转并且使其与下部砑光辊相互作用。适宜地,将砑光辊向内偏转或者说偏转出借助偏转装置或者说偏转杠杆或类似物来进行。所述至少一个砑光辊对用作用于非织造织物幅的至少一个最终加固级。
此外,在本发明的范围内,所述砑光辊更换在连续的工艺运行中在线进行并且尤其是在输送或者说继续输送非织造织物幅方面不中断地进行。在本发明的范围内,非织造织物幅可以在砑光辊更换期间进一步被生产和继续输送,而不需要停止并且重新起动相关的设备。
本发明基于这样的认识,在将要更换的砑光辊移除或者说偏转出时直接不考虑通过砑光机作用到非织造织物幅上的运输力。这导致所述设备的其它运输构件必须对非织造织物提供明显较大的牵引力。在将砑光辊移除或者说偏转出时,非织造织物幅的机械特性改变,尤其是E模量急剧下降。由此即使在小的力时伸长率也会高很多。所述效果通常导致,制成的非织造织物幅的特性不利地改变和/或非织造织物幅在没有合适的措施的情况下受损或者说撕裂。现在本发明基于如下认识,基于按照本发明的措施可以继续进行非织造织物幅生产和非织造织物幅输送,而非织造织物特性没有不利地改变并且非织造织物幅没有受损或撕裂。令人意想不到地,通过加强非织造织物幅的预加固,这种有利的结果可以用非常简单且不太耗费的措施实现。
本发明的一种特别优选的实施形式的特征在于,将纤维或者说塑料纤维作为长纤维或者说作为连续长丝纺出并且尤其是借助喷丝头纺出。这种连续长丝由于其可以说无限长的长度而不同于具有例如10mm至60mm的长度的明显较短的短纤维。根据本发明的一种推荐的实施形式,将所述长丝以单组分长丝的形式纺制出。按照本发明的方法的一种特别的实施形式的特征在于,将双组分长丝或者说多组分长丝作为纤维或者说作为连续长丝纺制出。适宜地,将纤维或者说长丝在将其铺放在铺放带或者说铺放筛带上之前拉伸。根据本发明的一种推荐的实施形式,将纤维作为连续长丝纺制出并且制造成纺粘型非织造织物幅或熔喷非织造织物幅。在本发明的范围内,可以无问题地利用多梁设备或者说多梁装置工作。
按照本发明,为了砑光辊更换,加强非织造织物幅的预加固。适宜地,所述预加固已经在将第一砑光辊从非织造织物幅移除之前或者说将要移除之前加强。在本发明的范围内,在引入第二砑光辊之后再次减少非织造织物幅的预加固并且尤其是再次减少到在砑光辊更换之前或者说在加强预加固之前的预加固。就此而言,本发明基于这样的认识,即在所述方法方式中在非织造织物生产时可以顺利地过渡。
根据一种推荐的实施形式,所述预加固装置具有至少一个作用到非织造织物幅上的按压辊或者说经加热的按压辊。优选地,利用所述按压辊在砑光辊更换之前或期间提高预加固并且为此优选提高按压辊的温度和/或压实压力或者说线性压力。适宜地,所述温度借助调节装置来调节。所述压实压力或者说线性压力可以选择成机械的、气动的或机电的。在本发明的范围内,在砑光辊更换之后再次减少利用按压辊的预加固、更确切地说适宜地减少到或者说大致减小到在提高预加固之前或者说在砑光辊更换之前的预加固的值。
根据本发明的一种优选的实施形式,所述预加固装置具有至少一个附加的预加固构件。适宜地,将所述至少一个附加的预加固构件在(将要)砑光辊更换之前或者说期间激活,以用于附加地预加固非织造织物幅。推荐地,在砑光辊更换之后再次停止利用所述至少一个附加的预加固构件进行的预加固并且优选再次减少到在砑光辊更换之前的预加固。
根据本发明的一种实施变型方案,所述至少一个附加的预加固构件是至少一个压辊,该压辊在(将要)砑光辊更换之前或者说期间与非织造织物幅接触,以用于附加地压实非织造织物幅。在此,在本发明的范围内,一个压辊对作为附加的预加固构件在(将要)砑光辊更换之前或者说期间与非织造织物幅接合,以用于附加地压实非织造织物幅。一种替代的或附加的实施变型方案的特征在于,所述至少一个附加的预加固构件是粘接剂涂敷装置、更确切地说尤其是喷胶涂敷装置。适宜地,利用该附加的预加固构件,在砑光辊(将要)更换之前或者说期间将粘接剂或者说喷胶施加到非织造织物幅上,以用于附加地预加固非织造织物幅。替代地或附加地,设有热空气预加固设备作为附加的预加固构件,利用所述热空气预加固设备在(将要)砑光辊更换之前或者说期间对非织造织物幅加载热空气,以用于附加地预加固。在本发明的范围内,一个这样的预加固构件或者说多个预加固构件在砑光辊更换之后再次停止工作并且所述预加固然后适宜地减少到或者说大致减少到在砑光辊更换之前或者说附加的预加固之前的预加固。
根据本发明的一种推荐的实施形式,除了加强预加固之外,对于砑光辊更换的时间,提高非织造织物幅的幅速度或者说设备速度。本发明的一种特别优选的实施形式的特征在于,在砑光辊更换期间提高非织造织物幅在铺放器与用于非织造织物幅的拾取装置、尤其是用于非织造织物幅的缠绕装置之间的幅速度。根据一种特别推荐的实施形式,在砑光辊更换的过程中除了加强预加固之外仅提高非织造织物幅的幅速度并且没有其它设备参数或者说装置参数改变或者说基本上改变。原则上,但其它设备参数在砑光辊更换期间也可以改变。为此适宜地在控制和/或调节装置中可以选择运行方式“辊更换”。要改变的设备参数或者说装置参数在所述运行方式中定义并且能够优选受程序控制地被传输给所述设备。
如上面已经示出的,本发明在非织造织物幅速度(幅速度)方面基于如下认识,即在移除第一砑光辊之后并且在引入第二砑光辊之前由砑光机施加到非织造织物幅上的运输力突然取消。与此对应地,对非织造织物幅作用的设备构件提供较高的牵引力。如果不这样做,那么由此经常导致非织造织物幅下垂。在此为了实现补偿可能性,根据本发明的优选的实施形式,除了在砑光辊更换过程中提高预加固之外还提高非织造织物幅的幅速度并且在此优选不改变或尽可能少地改变其它设备参数。适宜地,在砑光辊更换之后再次降低幅速度、尤其是降低到或者大约降低到在砑光辊更换之前幅速度的值。
在本发明的范围内,在砑光辊更换期间或过程中提高设置在铺放器与拾取装置或者说缠绕装置之间的旋转的并且与非织造织物幅接触的设备构件的至少一部分、尤其是辊的旋转速度。根据一种实施形式,所有所述旋转的设备构件的旋转速度都提高,以便提高幅速度。在本发明的范围内,除了加强预加固之外,按照本发明的设备的负责非织造织物幅速度的所有驱动器这样被适配,使得相应地提高非织造织物速度。为了辅助这些措施,在提高幅速度的过程中,将非织造织物幅区段连续地暂存在具有至少一个松紧调节辊(dancerroller)的松紧调节装置中。这种措施确保在砑光机更换期间和在提高幅速度之后可以暂时在松紧调节装置中接纳一定的非织造织物幅长度。适宜地,在砑光辊更换期间测量或监控非织造织物幅应力并且根据所述测量或监控来控制和/或调节决定非织造织物幅速度的设备构件或者说驱动装置。
作为在砑光辊更换时提高幅速度的替代方案或者补充方案,也可以在砑光辊更换的过程中利用启动非织造织物(所谓的“前体”)工作。为此,将已经加固的启动非织造织物引入到设备中并且将纤维铺放层加设或缠绕在所述启动非织造织物上。适宜地,当启动非织造织物已经到达用于非织造织物幅的拾取装置或缠绕装置时,开始砑光辊更换。在该处理方式中,原则上可以放弃在砑光辊更换期间提高幅速度。
在正常运行中,在制造非织造织物幅时一部分运输力由砑光机承担。如果在砑光机辊更换过程中不进行砑光,则不考虑由砑光机施加的运输力的所述份额。本发明基于这样的认识,在砑光辊更换过程中,所述力或者说运输力的缺少的份额必须通过附加的措施提供或补偿。
在本发明的范围内,使用铺放筛带作为用于纤维的铺放器,并且适宜地在传输给所述至少一个砑光辊之前将非织造织物幅与铺放筛带分离。优选地,在砑光辊更换期间借助附加的分离装置辅助非织造织物幅的分离。本发明的一种被证明的实施形式的特征在于,接通至少一个附加的拉脱辊并且使其与非织造织物幅接触,用于在砑光辊更换期间辅助非织造织物幅与铺放带或者说铺放筛带分离。根据一种优选的实施形式,所述附加的拉脱辊在形成用于非织造织物幅的拉脱辊隙的情况下与用于冷却非织造织物幅的、优选事先已经起作用的冷却辊接触。在本发明的范围内,在非织造织物幅制造的过程中,在铺放筛带并且适宜地在轧光机的下游连接有冷却辊,该冷却辊优选构造成S形辊牵拉件。为了辅助非织造织物幅与铺放筛带的分离,根据本发明的一种推荐的实施形式,在所述S形辊牵拉件的第一上部轧辊或冷却辊的上方设置有附加的拉脱辊,该拉脱辊为了预备砑光机辊更换并且在砑光机辊更换期间被放置到上部辊或冷却辊上并且在此适宜地形成拉脱辊隙,该拉脱辊隙辅助非织造织物幅与铺放带或者说铺放筛带的分离。
根据本发明的推荐的实施形式,所述砑光机辊更换在非织造织物幅速度为80m/min至400m/min、优选100m/min至350m/min并且非常优选100m/min至300m/min时进行。所述时间窗在按照本发明的方法的范围内已被证明为特别有利的。
在本发明的范围内,在砑光辊更换结束之后,将为了预备砑光辊更换或在砑光辊更换期间改变的装置参数再次复原或者说再次与正常运行相匹配。此外,在砑光机辊更换结束的过程中,适宜地将用于随后砑光的砑光辊加速到非织造织物幅速度或筛带速度(优选附加地以可调节的超前)加速并且紧接着彼此靠近以及加载压力。然后优选用原始的方法参数或装置参数继续进行非织造织物幅制造。
本发明的主题也是一种用于制造由纤维、尤其是由塑料纤维并且特别优选由塑料纤维组成的连续长丝制成的非织造织物幅的设备,其中,设有用于纺出纤维的纺丝装置和用于冷却纤维的冷却装置,以及设置有用于将纤维铺放成非织造织物幅的铺放器,
其中,设有至少一个用于预加固非织造织物幅的预加固装置,以及设置有至少一个连接于所述预加固装置下游的用于加固非织造织物幅的第一砑光辊,
其中,设有至少一个砑光辊更换装置,该砑光辊更换装置用于将第一砑光辊更换成第二砑光辊,并且该设备还包括以下特征:
——至少一个控制和/或调节装置,该控制和/或调节装置用于在砑光辊更换期间控制和/或调节预加固的强度以及优选用于控制和/或调节非织造织物幅的幅速度和/或非织造织物幅的幅应力,和/或
——至少一个附加的预加固构件,该预加固构件用于在砑光辊更换期间附加地预加固非织造织物幅,和/或
——至少一个分离装置,该分离装置用于在砑光辊更换期间辅助非织造织物幅与铺放筛带的分离。
上面已经陈述,根据本发明的一种优选的实施形式的按照本发明的方法实施作为用于制造纺粘非织造物的纺粘方法。在用于制造这种纺粘型无纺布或者说纺粘型非织造物的相应的纺粘设备的范围内,首先借助至少一个喷丝头纺出连续长丝并且接着将其在冷却装置中冷却。接着,长丝经过用于拉伸长丝的拉伸装置。将经拉伸的长丝在铺放器上、尤其是铺放带上或者说铺放筛带上铺放成非织造物幅或者说纺粘型非织造织物。
就此而言,本发明的一种特别优选的实施形式的特征在于,由冷却装置以及拉伸装置组成的机组构造为封闭机组,其中,除了将冷却空气供给到冷却装置中之外没有进行其它向封闭机组中的空气供给。适宜地,在拉伸装置与铺放器、尤其是铺放带或者说铺放筛带之间插接有至少一个扩散器。从拉伸装置中出来的纤维或者说连续长丝被引导通过所述扩散器并且然后被铺放在铺放器上或铺放筛带上。紧接着通过轧光进行预加固和加固。
本发明的另一种推荐的实施形式的特征在于,按照本发明的方法作为熔喷方法被实施并且制造熔喷非织造物。原则上,在本发明的范围内可以制造由双组分长丝或者说多组分长丝制成的非织造织物幅。尤其是,按照本发明的措施也出色地适合于这种非织造织物幅。此外本发明的范围内,在按照本发明的方法的过程中制造由热塑性塑料制成的纤维或者说长丝。塑料纤维的塑料优选是一种聚烯烃、尤其是聚乙烯和/或聚丙烯。但是原则上也可以使用其它热塑性塑料来制造按照本发明的非织造织物幅的纤维或者说长丝。
本发明基于这样的认识,即在按照据本发明的方法的范围内并且利用按照本发明的设备能够实现简单且快速的砑光辊更换,而不必中断非织造织物幅的生产。利用按照本发明的措施可以确保连续地继续生产非织造织物幅。为此所需的按照本发明的措施的特征在于简单性和低的花费。按照本发明的附加的预加固可以顺利地并且没有问题地实现。对于砑光机更换要采取的措施是相对简单的控制和/或调节措施或是接通简单的附加的设备构件。在按照本发明的方法的范围内,可以实现从正常的非织造织物生产到砑光辊更换的无问题过渡并且实现同样从砑光辊更换重新到正常运行的顺利过渡。所述过渡可以借助本发明的措施无干扰或无约束地进行。结果是按照本发明的方法和按照本发明的设备的特征在于简单性、低的耗费和低成本性。
附图说明
下面借助于描述仅一种描述实施例的图1详细解释本发明。唯一的附图以示意图示出用于实施按照本发明的方法的按照本发明的设备的纵剖面。
具体实施方式
在附图1中示出用于制造由连续长丝2制成的纺粘型非织造织物幅1的设备,其中,所述连续长丝2优选地并且在该实施例中是由热塑性塑料制成的长丝2。优选地并且在该实施例中,将长丝2借助纺丝装置或喷丝头3纺出并且接着将其在冷却装置4中冷却。沿长丝2的流动方向,在冷却装置4上连接有用于拉伸长丝2的拉伸装置5。优选地并且在该实施例中,所述拉伸装置5具有沿长丝2的流动方向收缩的中间通道6以及连接在该中间通道上的拉伸通道7。推荐地并且在该实施例中,由冷却装置4和拉伸装置5组成的机组构造成封闭系统。在该封闭系统中,除了在冷却装置4中供给冷却空气或处理空气之外没有进行其它的空气供给。根据优选的实施方式并且在该实施例中,沿长丝2的流动方向在拉伸装置5上连接有扩散器8。优选地并且在该实施例中,紧接着所述扩散器8,将连续长丝2在铺放筛带9上铺设成非织造织物幅1。所述铺放筛带9优选地并且在该实施例中是循环环绕的铺放筛带9。
推荐地并且在该实施例中,所铺放的非织造织物幅1在预加固装置10中利用两个按压辊11预加固。适宜地并且在该实施例中,随后经预加固的非织造织物幅1在具有第一上部砑光辊13和下部砑光辊14的砑光机设备12中进行加固。在附图中示出,将所述第一上部砑光辊13在连续的工艺运行中更换成第二上部砑光辊15(砑光辊更换)。在此,将第一上部砑光辊13从非织造织物幅1移除并且之后第二上部砑光辊15才与下部砑光辊14接触。由此产生一个时间段,在该时间段中不进行对非织造织物幅1的砑光。因此砑光机设备12在非织造织物幅1上的运输力取消了。由此造成,用于非织造织物幅1的其它输送构件必须施加较大的力或牵引力。这可能导致非织造织物幅1的损坏或撕裂。
在此为了提供补救,按照本发明在砑光辊更换期间加强非织造织物幅1的预加固并且适宜地在引入第二上部砑光辊15之后再次减少非织造织物幅1的该加强的预加固。
在根据附图1的实施例中,预加固装置10具有两个作用到非织造织物幅1上的按压辊11。在本发明的范围内,在砑光辊更换期间利用按压辊11提高预加固。优选为此提高按压辊11的温度和/或压实压力。根据一种优选的实施形式并且在该实施例中,预加固装置10具有至少一个附加的预加固构件,该预加固构件在砑光辊更换期间被激活,以用于附加地预加固非织造织物幅1。根据一种实施形式并且在根据附图1的实施例中,所述附加的预加固装置是热空气加固装置16,在砑光辊更换期间利用该热空气加固装置对非织造织物幅1加载热空气,用于附加的预加固。

Claims (15)

1.一种用于制造由纤维、尤其是由塑料纤维制成的非织造织物幅(1)的方法,其中,将纤维纺出并且冷却并且作为纤维铺放层或者说作为非织造织物幅(1)铺放在铺放器上、尤其是铺放带上,
其中,设置有至少一个用于预加固非织造织物幅(1)的预加固装置(10)并且设置至少一个连接于所述预加固装置(10)下游的用于加固非织造织物幅的第一砑光辊(13),
其中,将所述第一砑光辊(13)在连续的工艺运行中更换成第二砑光辊(15)(砑光辊更换),其中,将第一砑光辊(13)从非织造织物幅(1)移除,在所述砑光辊更换期间加强非织造织物幅(1)的预加固并且在引入所述第二砑光辊(15)之后再次减少非织造织物幅(1)的预加固。
2.根据权利要求1所述的方法,其中,将纤维在铺放之前拉伸。
3.根据权利要求1或2所述的方法,其中,将连续长丝(2)作为纤维纺出并且铺设成纺粘型非织造织物幅或熔喷非织造织物幅。
4.根据权利要求1至3中任一项所述的方法,其中,所述预加固装置(10)具有至少一个作用到非织造织物幅(1)上的按压辊(11),其中,在砑光辊更换期间利用所述按压辊提高所述预加固并且为此优选提高按压辊(11)的温度和/或压实压力或者说线性压力。
5.根据权利要求1至4中任一项所述的方法,其中,所述预加固装置(10)具有至少一个附加的预加固构件,其中,将所述至少一个附加的预加固构件在砑光辊更换期间激活,以用于附加地预加固非织造织物幅(1)。
6.根据权利要求5所述的方法,其中,所述至少一个附加的预加固构件是至少一个压辊,该压辊在砑光辊更换期间与非织造织物幅(1)接触,以用于附加地压实非织造织物幅(1)。
7.根据权利要求5或6所述的方法,其中,所述至少一个附加的预加固构件是粘接剂涂敷装置、尤其是喷胶涂敷装置,利用所述粘接剂涂敷装置在砑光辊更换期间将粘接剂或喷胶施加到非织造织物幅(1)上,以用于附加地预加固非织造织物幅(1)。
8.根据权利要求5至7中任一项所述的方法,其中,所述至少一个附加的预加固构件是热空气预加固装置(16),利用该热空气预加固装置在砑光辊更换期间对非织造织物幅(1)加载热空气,以用于附加地预加固。
9.根据权利要求1至8中任一项所述的方法,其中,在砑光辊更换期间提高在铺放器与用于非织造织物幅(1)的拾取装置、尤其是用于非织造织物幅(1)的缠绕装置之间的非织造织物幅(1)的幅速度。
10.根据权利要求9所述的方法,其中,在砑光辊更换期间提高设置在铺放器与拾取装置或者说缠绕装置之间的旋转的并且与非织造织物幅(1)接触的设备构件的至少一部分、尤其是辊的旋转速度。
11.根据权利要求1至10中任一项所述的方法,其中,在砑光辊更换期间将非织造织物幅区段连续地暂存在具有至少一个松紧调节辊的松紧调节装置中。
12.根据权利要求1至11中任一项所述的方法,其中,在砑光辊更换期间测量或监控并且控制和/或调节非织造织物幅应力。
13.根据权利要求1至12中任一项所述的方法,其中,使用铺放筛带(9)作为用于纤维的铺放器,其中,将非织造织物幅在传输给所述至少一个砑光辊(13、14)之前与所述铺放筛带(9)分离,并且在砑光辊更换期间借助附加的分离装置辅助非织造织物幅(1)的分离。
14.根据权利要求1至13中任一项所述的方法,其中,在砑光辊更换期间接通至少一个附加的拉脱辊并且将该拉脱辊与非织造织物幅接触,以便辅助非织造织物幅(1)与铺放筛带(9)的分离,并且优选地将所述附加的拉脱辊在形成用于非织造织物幅(1)的拉脱辊隙的情况下与用于冷却非织造织物幅(1)的冷却辊接触。
15.一种用于制造由纤维、尤其是由塑料纤维制成的非织造织物幅(1)的设备、尤其是用于实施根据权利要求1至14中任一项所述方法的设备,其中,设有用于纺出纤维的纺丝装置和用于冷却纤维的冷却装置(4),以及设置有用于将纤维铺放成非织造织物幅(1)的铺放器,
其中,设有至少一个用于预加固非织造织物幅的预加固装置(10),以及设置有至少一个连接于所述预加固装置(10)下游的用于加固非织造织物幅(1)的第一砑光辊(13),
其中,设有至少一个砑光辊更换装置,该砑光辊更换装置用于将第一砑光辊(13)更换成第二砑光辊(15),并且该设备还包括以下特征:
至少一个控制和/或调节装置,该控制和/或调节装置用于在砑光辊更换期间控制和/或调节预加固的强度以及优选非织造织物幅(1)的幅速度和/或非织造织物幅(1)的幅应力,和/或
至少一个附加的预加固构件,该预加固构件用于在砑光辊更换期间附加地预加固非织造织物幅(1),和/或
至少一个分离装置,该分离装置用于在砑光辊更换期间辅助非织造织物幅(1)与铺放筛带(9)的分离。
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