CN1274896C - 用于制造纺粘型非织造织物幅的装置 - Google Patents
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Abstract
本发明涉及一种用于由空气动力拉伸的热塑性塑料丝制造纺粘型非织造织物幅的装置,它包括具有多个喷丝孔的喷丝头,从该喷丝头中排出由热塑性塑料丝形成的幕。拉伸喷嘴设有两个对置的形成喷嘴缝隙的拉伸喷嘴组。至少一个加热装置连接在至少一个拉伸喷嘴组上,以及,所述拉伸喷嘴组可通过该加热装置按这样的标准被加热,使得拉伸喷嘴缝隙中的作业空气温度和环境温度之间的温差得到补偿。
Description
技术领域
本发明涉及一种用于由空气动力拉伸的热塑性塑料丝制造纺粘型非织造织物幅的装置,它包括一个具有多个喷丝孔的并从其中排出由热塑性塑料丝形成的幕的喷丝头和一个具有两个对置的形成喷嘴缝隙的拉伸喷嘴组的拉伸喷嘴。在拉伸喷嘴或拉伸喷嘴的喷嘴缝隙中进行拉丝,而且借助于流过拉伸喷嘴的作业空气。拉伸喷嘴的喷嘴缝隙中的作业空气温度通常高于环境温度,例如为35至40℃。“两个对置的形成喷嘴缝隙的拉伸喷嘴组”这种说法当然不应不看到,这两个拉伸喷嘴组组合成一个单独的拉伸喷嘴并可在它们的端侧相互连接。合乎目的地在喷丝头与拉伸喷嘴之间设有用于该丝的冷却装置。为了支承非织造织物通常设有一条铺设带。在拉伸喷嘴与铺设带之间优选地设置有一非织造织物铺设装置。
背景技术
由实际已知的开头所述类型的装置证明基本上是有效的。然而,在用这种已知的装置制造的纺粘型非织造织物幅具有数量级为±20%的单位面积重量差别或单位面积重量公差。当然,这种宽的单位面积重量分布是不符合要求的。
发明内容
因此,本发明以这个技术问题为基础,提供一种开头所述类型的装置,用它可制造具有窄的单位面积重量公差的纺粘型非织造织物幅。
为了解决这个技术问题,本发明说明了一种开头所述类型的装置,其特征在于,至少一个加热装置连接在至少一个拉伸喷嘴组上,以及,所述拉伸喷嘴组可通过该加热装置按这样的标准被加热,使得拉伸喷嘴缝隙中的作业空气温度和环境温度之间的温差得到补偿。
在本发明范围内,各有至少一个温度调节装置设置在两个对置的形成喷嘴缝隙的拉伸喷嘴组上,而且优选地设置在每个拉伸喷嘴的远离喷嘴缝隙的背面。温度调节装置合乎目的地固定在拉伸喷嘴组的支承元件上。在此优选是用于拉伸喷嘴组的在背面的支承元件或支承梁。在这里背面是指拉伸喷嘴组的远离喷嘴缝隙的侧面。温度调节装置在本发明范围内是指用于拉伸喷嘴组的加热或冷却的装置。
根据本发明的非常优选的实施方式,特殊意义在于,温度调节装置是一种用于加热拉伸喷嘴组的加热装置。因此,以下不用温度调节装置概念使用加热装置概念,即使是在以下说明的技术特征一般也能够完全适用于温度调节装置。利用一个加热装置或多个加热装置在需要时可以加热拉伸喷嘴组。按照本发明拉伸喷嘴组的加热按照这个标准进行,即使拉伸喷嘴缝隙中的温度或拉伸喷嘴缝隙中的作业空气温度和环境温度之间的温差得到补偿,并且阻止由这种温差引起的拉伸喷嘴组的变形。从而整个拉伸喷嘴组能够被加热到作业空气温度或拉伸喷嘴缝隙中的温度。
本发明在这方面基于这样的见解,在拉伸喷嘴缝隙中的温度与环境温度之间有差别的情况下在拉伸喷嘴组上出现或可能出现变形,并且然后拉伸喷嘴组特别是在它的中心向喷嘴缝隙鼓起。本发明还基于这样的见解,由于拉伸喷嘴组的这种变形或拉伸喷嘴组的喷嘴缝隙一侧的内表面的变形,出现所提及的纺粘型非织造织物幅的单位面积重量中的差值。在本发明范围内同样发现,在从现有技术中已知的装置中出现的所不希望的高的单位面积重量公差,是拉伸喷嘴组变形或弯曲的直接结果。因此在本发明中,优选地在每个拉伸喷嘴组上分别设有至少一个用于加热拉伸喷嘴组的加热装置。通过这样加热能够补偿在拉伸喷嘴组内部的温差,并因而避免变形或至少充分地减少变形。通常拉伸喷嘴缝隙中的温度或拉伸喷嘴缝隙中的作业空气温度(例如35℃至40℃)高于环境温度(例如大约20℃)。在这种情况下,通常在设备运行过程中拉伸喷嘴组的喷嘴缝隙一侧的内壁向喷嘴缝隙鼓起。通过按照本发明的加热能够避免这些情况。合乎目的地将拉伸喷嘴组加热到喷嘴缝隙中的温度。
优选地设有至少一个用于测量环境温度的温度传感器,并且按照所测定的环境温度对拉伸喷嘴组进行加热。如上面已经说明的,通常环境温度处于大约20℃。合乎目的地在背面,亦即,在拉伸喷嘴组的远离喷嘴缝隙的侧面设置一温度传感器。特别是可以在拉伸喷嘴组背面的支承元件或背面的支承梁上设置温度传感器。根据本发明的一种实施方式,在每个拉伸喷嘴组上合乎目的地在每个拉伸喷嘴组背面设置至少一个温度传感器。
根据非常优选的实施方式,在本发明范围内很特别的意义在于,存在一个用于控制和/或调整拉伸喷嘴组的加热的控制装置和/或调整装置。其中在本发明范围内在于,用控制装置和/或调整装置根据所测定的环境温度对拉伸喷嘴组进行加热。在本发明的范围内还在于,设有用于测量拉伸喷嘴缝隙中的温度或拉伸喷嘴缝隙中的作业空气温度的测量装置。因此,也可以用控制装置和/或调整装置根据该测定的环境温度进行拉伸喷嘴组的加热。
根据本发明一种优选实施方式,设有一种用于测定所制造的纺粘型非织造织物幅的单位面积重量的装置,并根据所测定的单位面积重量进行加热。其中在本发明范围内在于,用控制装置或调整装置根据所测定的单位面积重量对拉伸喷嘴组进行加热。
合乎目的地,在按照本发明的装置中在喷丝头与拉伸喷嘴之间设置至少一个冷却装置。该冷却装置可以例如由一具有沿水平方向的矩形腔横截面的冷却室组成。该腔横截面合乎目的地沿纤维的运动方向减小。优选地一非织造织物铺设装置连接在拉伸喷嘴的后面。该非织造织物铺设装置可以设计成带沿垂直方向的文杜里式入口和扩压器出口的喷射泵式。合乎目的地非织造织物铺设装置沿水平方向具有一矩形的流动横截面。在非织造织物铺设装置的或者喷射泵的入口区域设有至少一个开敞的吸气口,在非织造织物铺设装置下面合乎目的地设有一连续运动的铺设筛带,在其下面在非织造织物铺设装置区域设置一抽气机。其中在本发明范围内在于,可借助于抽气机控制或调整通过作为喷射泵工作的非织造织物铺设装置吸入的空气量。
按照本发明的拉伸喷嘴设计成缝隙式喷嘴。该拉伸喷嘴合乎目的地具有一沿水平方向的矩形的喷嘴横截面。优选地喷嘴横截面的喷嘴缝隙厚度可以调整。在本发明范围内在于,在拉伸喷嘴的出口处在至少一个拉伸喷嘴壁上设有一反弹装置。拉伸喷嘴或拉伸喷嘴组合乎目的地设计成箱式的具有板制喷嘴壁的部件。换句话说,根据这种实施方式拉伸喷嘴组在缝隙式喷嘴侧面具有板壁。
本发明基于这样的见解,用按照本发明的装置的构造或采用按照本发明的拉伸喷嘴组的加热可能性制成的非织造织物幅能够保持非常小的单位面积重量公差。而用现有技术中已知的装置,单位面积重量公差达到所不希望的数量级±20%,用按照本发明的装置能够达到很小的单位面积重量差值或单位面积重量公差。从而例如单位面积重量公差达到数量级±6%和更小。
附图说明
下面结合仅示出一个实施例的附图进一步阐述本发明。附图中示意地示出:
图1按照本发明的用于制造纺粘型非织造织物幅的装置的示意图;以及
图2按照图1从箭头方向A观察的物体的透视图。
具体实施方式
在附图中示出一种用于由空气动力拉伸的热塑性塑料丝制造纺粘型非织造织物幅1的装置。该装置包括一个带有多个喷丝孔的喷丝头2。从该喷丝头2中排出由热塑性塑料丝形成的幕3。纤维形成腔4连接在喷丝头2上。此外在图1中下部可看出设有拉伸喷嘴5,它由两个对置的形成喷嘴缝隙的拉伸喷嘴组6组成。非织造织物铺设装置7连接在拉伸喷嘴5的后面,该非织造织物铺设装置7设计成带有沿垂直方向的文杜里式入口8和扩压器出口9的喷射泵。非织造织物铺设装置7或喷射泵在入口8区域具有至少一个开敞的吸气口10。非织造织物幅1铺设在连续运动的铺设筛带11上。在该铺设筛带下面在非织造织物铺设装置7区域设置一抽气机12。
拉伸喷嘴5设计成缝隙式喷嘴。在图1中可看出,两个拉伸喷嘴组6的喷嘴缝隙一侧的内壁13至少沿拉伸喷嘴5垂直长度的大部分相互靠近地设置。这两个拉伸喷嘴组6在它们的端面以未示出的方式相互连接。在实施例中在两个对置的形成喷嘴缝隙的拉伸喷嘴组6中的每一个上设置有一个按照本发明的加热装置14,而且优选地设置在每个拉伸喷嘴组6的远离喷嘴缝隙的背面(参见图1和图2)。优选地并在实施例中其中每个加热装置14固定在拉伸喷嘴组6的支承梁15上。支承梁15在实施例中沿垂直于纤维的运动方向延伸。加热装置14可以设计成例如片式散热器或加热调节器。在装置运行中在喷嘴缝隙16中的温度或喷嘴缝隙16中的作业空气温度与环境温度之间通常存在温差。喷嘴缝隙16中的温度为35℃至40℃,而环境温度例如为20℃。当该温差保持不变时,在拉伸喷嘴组6上出现变形,而且特别是拉伸喷嘴组6的喷嘴缝隙一侧的内壁13变形,并特别是向里朝向喷嘴缝隙16鼓起。本发明基于这样的见解,由于这种变形在所制造的纺粘型非织造织物幅中导致所不希望的高的单位面积重量。因此按照本发明借助于加热装置14这样加热,使得尽可能平衡拉伸喷嘴组6内部的温差并从而避免所不希望的变形。
在图2中可看出加热装置14,它固定在拉伸喷嘴组6的支承梁15的背面。优选地并在实施例中沿加热装置14设有绝热装置17。此外,在图2中还可看出有用于测量环境温度的温度传感器18。合乎目的地根据所测定的环境温度标准进行拉伸喷嘴组6的加热。
Claims (9)
1.一种用于由空气动力拉伸的热塑性塑料丝制造纺粘型非织造织物幅(1)的装置,它包括:
具有多个喷丝孔的喷丝头(2),从该喷丝头(2)中排出由热塑性塑料丝形成的幕(3);
具有两个对置的形成喷嘴缝隙的拉伸喷嘴组(6)的拉伸喷嘴(5);
其特征在于,
至少一个加热装置连接在至少一个拉伸喷嘴组(6)上,以及,所述拉伸喷嘴组(6)可通过该加热装置按这样的标准被加热,使得拉伸喷嘴缝隙中的作业空气温度和环境温度之间的温差得到补偿。
2.根据权利要求1所述的装置,其特征在于,在两个对置的形成喷嘴缝隙的拉伸喷嘴组(6)上分别设置至少一个加热装置。
3.根据权利要求1或2所述的装置,其特征在于,加热装置固定在拉伸喷嘴组(6)的支撑元件上。
4.根据权利要求1或2所述的装置,其特征在于,设有至少一个用于测量环境温度的温度传感器(18),并且按照所测定的环境温度对拉伸喷嘴组(6)进行加热。
5.根据权利要求1或2所述的装置,其特征在于,设有用于控制和/或调整拉伸喷嘴组(6)的加热的控制装置和/或调整装置。
6.根据权利要求1或2所述的装置,其特征在于,设有用于测定所制造的纺粘型非织造织物幅(1)的单位面积重量的装置,并且根据所测定的纺粘型非织造织物幅(1)的单位面积重量进行加热。
7.根据权利要求1或2所述的装置,其特征在于,在喷丝头(2)与拉伸喷嘴(5)之间设置至少一个冷却装置。
8.根据权利要求1或2所述的装置,其特征在于,在拉伸喷嘴(5)的后面连接非织造织物铺设装置(7)。
9.根据权利要求1或2所述的装置,其特征在于,设有用于纺粘型非织造织物幅(1)的铺设筛带(11)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01129946A EP1323852B1 (de) | 2001-12-17 | 2001-12-17 | Vorrichtung zur Herstellung einer Spinnvliesbahn |
EP01129946.8 | 2001-12-17 |
Publications (2)
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CN1427106A CN1427106A (zh) | 2003-07-02 |
CN1274896C true CN1274896C (zh) | 2006-09-13 |
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US (1) | US6908292B2 (zh) |
EP (1) | EP1323852B1 (zh) |
JP (1) | JP3645887B2 (zh) |
KR (1) | KR100493981B1 (zh) |
CN (1) | CN1274896C (zh) |
AT (1) | ATE406470T1 (zh) |
BR (1) | BR0205177B1 (zh) |
CA (1) | CA2412719C (zh) |
DE (1) | DE50114266D1 (zh) |
DK (1) | DK1323852T3 (zh) |
ES (1) | ES2214983T3 (zh) |
MX (1) | MXPA02012303A (zh) |
MY (1) | MY129489A (zh) |
SI (1) | SI1323852T1 (zh) |
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2001
- 2001-12-17 ES ES01129946T patent/ES2214983T3/es not_active Expired - Lifetime
- 2001-12-17 SI SI200130865T patent/SI1323852T1/sl unknown
- 2001-12-17 DK DK01129946T patent/DK1323852T3/da active
- 2001-12-17 DE DE50114266T patent/DE50114266D1/de not_active Expired - Lifetime
- 2001-12-17 EP EP01129946A patent/EP1323852B1/de not_active Expired - Lifetime
- 2001-12-17 AT AT01129946T patent/ATE406470T1/de not_active IP Right Cessation
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- 2002-12-11 MX MXPA02012303A patent/MXPA02012303A/es active IP Right Grant
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US20030113394A1 (en) | 2003-06-19 |
JP2003213561A (ja) | 2003-07-30 |
KR20030051303A (ko) | 2003-06-25 |
KR100493981B1 (ko) | 2005-06-13 |
SI1323852T1 (sl) | 2008-12-31 |
ES2214983T3 (es) | 2008-12-16 |
EP1323852A1 (de) | 2003-07-02 |
CA2412719C (en) | 2007-01-16 |
MXPA02012303A (es) | 2006-09-14 |
EP1323852B1 (de) | 2008-08-27 |
BR0205177A (pt) | 2004-06-29 |
DK1323852T3 (da) | 2008-11-17 |
MY129489A (en) | 2007-04-30 |
US6908292B2 (en) | 2005-06-21 |
ATE406470T1 (de) | 2008-09-15 |
DE50114266D1 (de) | 2008-10-09 |
JP3645887B2 (ja) | 2005-05-11 |
BR0205177B1 (pt) | 2013-11-26 |
CN1427106A (zh) | 2003-07-02 |
CA2412719A1 (en) | 2003-06-17 |
ES2214983T1 (es) | 2004-10-01 |
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