CN1395635B - 借助水刺法制造复合的无纺织物材料的方法和装置 - Google Patents
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Abstract
已经公开由至少一层纺粘无纺织物和随后在其上覆盖的木浆层生产复合的无纺织物的传统方法,它用于生产医药卫生产品。因此,纺粘无纺织物在覆盖木浆层之前进行水刺,以增加其流体分散性能。之后,木浆层可不再进行水刺,因为木浆将通过无纺织物被冲洗掉。然而,由于要求的耐磨性,无纺织物的粘接是需要的。按照本发明,上述的问题获得解决,在这里,在包覆超吸收能力材料之前,无纺织物使用压缩空气压缩或压光,作为预先粘接处理,随后覆盖木浆层以及两者使用水刺进行粘接,随后烘干。可以增加继续压光。继续预先粘接,换句话说,压光的纺粘无纺织物、或粗梳无纺织物可以覆盖到纺粘无纺织物上作为支承层,或者反之亦然。
Description
技术领域
本发明涉及借助水针法制造复合无纺织物材料的方法和装置。
背景技术
EP-A-0333209公开一种弹性体长丝纤维和木浆纤维的水力粘接法以及用此法增强的复合的无纺织物。使用这种增强方法时,存在的问题是大量的木浆纤维从系统冲洗出,换句话说,纤维流失。此外,在实践中还发现,这种复合的无纺纤维的外层倾向于起球,如WO90/04066中所述,为了改进,EP-A-0540041建议在加上木浆纤维之前用水力法处理此长丝纤维的无纺织物,它不仅给无纺织物更高的强度,而且也改进了木浆纤维的吸收率和流体分布性能。按照这一文件,木浆纤维直接加在经针刺的无纺织物上,以及随后与无纺织物一起烘干,以便粘接,或者用机械方法压制成无纺织物。
可能已经发现,这些类型的生产无纺织物产品方法没有一种能满足实际的条件。更具体地说,问题在于复合的无纺织物倾向于在无接头的纤维的无纺织物的外侧面起球。
发明内容
本发明的目的是提供一种方法和相关装置,使用它易于改进表面耐磨性,而且,可以达到木浆纤维在载体的无纺织物中良好的粘接。也应该注意的是,保证包覆的木浆层不会损失,或者在与载体的无纺织物有效粘接处仅有非常小的损失。
为实现本发明的目的,本发明提供了一种制造复合的无纺织物的方法,使用至少一层纺粘无纺织物,以及一层加在此纺粘无纺织物上的木浆层,用于制造医药卫生产品,其特征在于纺粘无纺织物是在用木浆层涂覆之前在干状态下压缩以便预先增强,木浆层是随后加在其上,以及两者一起用水刺过程增强和随后烘干。
为实现本发明的目的,本发明还提供了用于实施本发明的方法,制造由纺粘无纺织物和超吸收能力材料层组成的医药卫生产品的装置,所述的装置具有:a)纺粘或粗梳装置,b)压缩空气增强或压光装置,e)在覆盖时,直接连接的装置用于覆盖木浆层到预先增强的载体无纺织物上,f)水针刺装置,该装置的水喷射对准木浆层,g)烘干器以及h)在覆盖时,另外的预先增强和压光装置。
为实现本发明的目的,本发明还提供了一种制造复合的无纺织物的方法,使用至少一层粗梳无纺织物,及一层加在粗梳无纺织物上的木浆层,其特征在于在用木浆层涂覆前,粗梳无纺织物经压光以便预先增强,木浆层随后加在其上,在木浆层以后,纺粘无纺织物覆盖其上,作为覆盖层,所述的复合无纺织物用水刺过程增强和随后烘干。
起始于EP-A-0540041,本发明达到的目的是在用超吸收能力材料覆盖之前,纺粘无纺织物经预先增强,用空气针刺或者用压光预先增强,木浆层是随后覆盖,以及两者一起用水刺过程增强和随后烘干。在继续处理之前长丝纤维无纺织物的压光的增强,不仅改进了最终产品的耐磨性,而且也减少了水刺时无纺织物中木浆的损失。然而,必须注意,压光必须不要太强。如果增强太大,以及粘接点太不相同,则木浆层与压光的无纺织物的粘接会难以通过水刺过程。由于此原因,为了改进起球倾向,无纺织物可以在烘干之后在粘接过程的末尾再次碾压,以及这样可达到全部表面纤维的固定的粘接。在无纺织物产品仅具有一个纺粘层的地方,仅有邻接旋制的粘接层的滚子需要加热。
然而,在可以覆盖的地方,有利的是在木浆层表面上进行热压光过程。这种程序被称为纤维素纤维的氢键键合,这样密封的纸形表面显现在木浆的侧面。这样的产品可以随后使用于医学目的,例如用于生产手术衣或盖布的情况,无纺织物还应该经疏水性处理。
必须明确,在此制造方法中,木浆层是用水力法粘接至无纺织物上,否则此产品会由于考虑是一层的结构而在实践中不能存在。甚至更好的方法是,如果其它预先增强的长丝纤维或粗梳无纺织物覆盖至木浆层以及此三层一起进行水刺。最终的压光也是有利的。还有有利的情况是使用压光的无纺织物作为载体无纺织物以代替长丝纤维无纺织物,在其上覆盖的纺粘无纺织物作为覆盖层。
附图说明
实现本发明方法用的相关装置示于附图内,附图中:
图1是生产仅带有一层载体底衬的复合无纺织物用的连续系统的侧视图;
图2是图1系统的侧视图,补充在水刺的上游供给由长丝纤维无纺织物形成的附加的覆盖层,以及
图3是图2一样的系统,但带有粗梳系统,位于生产粗梳无纺织物作为载体层的入口处。
具体实施方式
长丝纤维2从装置1连续地排出,其原理是已知的,这里不再详述,它撞击在下面按箭头4方向运动的传送带3上。压光机分配给传送带3,此压光机根据需要供给增强的无纺织物,它在其可覆盖的地方也精细地加力和加热压制。此压光机也可以用压缩空气增强装置代替,它在此处没有绘出。增强效应应该仅是轻微的,使借助水刺过程木浆仍能进入与长丝纤维的无纺织物内粘接。在此方法步骤之后,木浆纤维的覆盖按照已知的方法,例如使用按照EP-A-0032772的装置6。随后水刺过程7对两个无纺织物层一起进行。也可以使用图2所示的渗透转筒进行水刺过程,以代替图1所示的传送带。随后进行的是在带有全通风的筛网转筒装置8,9上的烘干过程。在装置8的情况下,通风器分配给前面的筛网转筒。最后,应进行其它压光15,16,但这时其中一个用较大的力。增强的强度必须是这样的,使最终产品具有较大的满意的耐磨性。在图1的实例中,仅有与纺粘无纺织物接触的滚子16需要加热。
图2的连续系统相当于图1的连续系统,仅带有一层另外的第二层,仅轻微预先增强的长丝纤维无纺织物是由装置10产生的,此无纺织物也可以使用滚子自然地提供,或者预先生产(图中未示出)。这里也可使用装置1-4覆盖到图1的载体无纺织物上。顶上覆盖的无纺织物12在全部时间使用压光滚子11预先增强。在覆盖的无纺织物12沉积到木浆层上之后(它是使用装置6由装置1,5覆盖到基体的无纺织物上),上述水刺过程开始进行,在例举的实施例中,它也可以从两侧面进行,当木浆层两面被无纺织物覆盖时,可在多阶段中以包覆。为此目的,水刺转筒13,14前后设置,以曲折的形式转动,以及如箭头所示的每个喷射流由上面分配至水刺转筒13,14。随后的烘干过程在这里使用其它类型的全通风烘干器9进行,通风器由外面分配至烘干器9的筛网转筒9′。最后,压光机15,16也可以在此转动,但在此种情况下,两个转筒15,16必须加热。
到目前为止仅讨论了为随后压光用的纺粘无纺织物的生产,显然,代替纺粘无纺织物,粗梳无纺织物也可以生产,作为载体无纺织物,用滚子5压光和随后增强,以及木浆层6可以覆盖在无纺织物上。请参见图3。粗梳装置1′-4′用作无纺织物的放置装置。粗梳装置具有一个箱1′,它带有振动槽2′设置在它的下面,振动槽传送沿宽度均匀展开的织物至粗梳装置,这时使用刮撕滚子3′,随后的传送带4′传送粗梳无纺织物至压光装置5,如上所述。在此情况下,纺粘无纺织物用作木浆层之后的覆盖层12,此纺粘无纺织物可以在装置10内制成,如图所示。在这里也可以要求使用纺粘无纺织物作为载体无纺织物,粗梳无纺织物在木浆层之后包覆在它上面。在此情况下,装置10应为标号1′-4′表示的装置,而纺粘装置类似于标号1,2,设置在粗梳装置的地方。
Claims (8)
1.一种制造复合的无纺织物的方法,使用至少一层纺粘无纺织物,以及一层加在此纺粘无纺织物上的木浆层,用于制造医药卫生产品,其特征在于纺粘无纺织物在用木浆涂覆之前在干状态下压缩以便预先增强,木浆层随后通过涂覆加在其上,两者一起用水刺过程增强和随后烘干,以及在纺粘无纺织物和木浆层两部分复合的无纺织物进行水刺增强的步骤之前将另一覆盖层加到木浆层上。
2.按照权利要求1的方法,其特征在于预先增强,预先压缩是用压缩空气进行的。
3.按照权利要求1的方法,其特征在于预先增强,预先压缩是通过压光产生的。
4.按照权利要求1的方法,其特征在于预先增强和压光的纺粘无纺织物用作所述的另一覆盖层。
5.按照权利要求1的方法,其特征在于预先增强和压光的粗梳无纺织物用作所述的另一覆盖层。
6.按照权利要求1-5中任一项的方法,其特征在于纺粘无纺织物的预先增强是在水刺之前进行的,以仅轻微粘接纺粘无纺织物的纤维。
7.按照权利要求3的方法,其特征在于烘干的复合的无纺织物再次经压光,但此次使用较大的力。
8.用于实施按照权利要求1-5中任一项的方法,制造由纺粘无纺织物和超吸收能力材料层组成的医药卫生产品的装置,所述的装置包括:
a)纺粘或粗梳装置(1,2;10,1′-4′),
b)压缩空气增强或压光装置(5,11),
e)直接连接的装置(6)用于涂覆木浆到预先增强的载体无纺织物上以形成木浆层,
f)水针刺装置(7;13,14),该装置的水喷射对准木浆层,
g)烘干器(8,9)以及
h)另外的预先增强和压光装置(15,16),
其中在形成覆盖层的水刺装置(13,14)的上游还具有另外的c)纺粘或粗梳装置(10),在纺粘或粗梳装置后面跟随的是d)位于水刺装置(13,14)上游的增强和压光装置(11)。
Applications Claiming Priority (4)
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DE10001723.1 | 2000-01-17 | ||
DE10001723 | 2000-01-17 | ||
DE10004448.4 | 2000-02-03 | ||
DE10004448A DE10004448A1 (de) | 2000-01-17 | 2000-02-03 | Verfahren und Vorrichtung zur Herstellung von Verbundvliesstoffen mittels der hydrodynamischen Vernadelung |
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CN1395635A CN1395635A (zh) | 2003-02-05 |
CN1395635B true CN1395635B (zh) | 2010-09-29 |
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US (1) | US6836938B2 (zh) |
EP (1) | EP1250482B2 (zh) |
CN (1) | CN1395635B (zh) |
AT (1) | ATE293180T1 (zh) |
BR (1) | BR0107640B1 (zh) |
CA (1) | CA2392835C (zh) |
EA (1) | EA004031B1 (zh) |
ES (1) | ES2240423T5 (zh) |
IL (1) | IL150636A0 (zh) |
WO (1) | WO2001053588A2 (zh) |
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2001
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- 2001-01-13 BR BRPI0107640-0A patent/BR0107640B1/pt not_active IP Right Cessation
- 2001-01-13 CA CA002392835A patent/CA2392835C/en not_active Expired - Fee Related
- 2001-01-13 AT AT01911482T patent/ATE293180T1/de not_active IP Right Cessation
- 2001-01-13 WO PCT/EP2001/000383 patent/WO2001053588A2/de active IP Right Grant
- 2001-01-13 EP EP01911482A patent/EP1250482B2/de not_active Expired - Lifetime
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EA004031B1 (ru) | 2003-12-25 |
US20030106195A1 (en) | 2003-06-12 |
US6836938B2 (en) | 2005-01-04 |
EP1250482A2 (de) | 2002-10-23 |
EP1250482B2 (de) | 2009-06-10 |
EA200200772A1 (ru) | 2003-02-27 |
ES2240423T5 (es) | 2009-11-13 |
ATE293180T1 (de) | 2005-04-15 |
BR0107640B1 (pt) | 2011-07-12 |
CA2392835C (en) | 2008-05-27 |
IL150636A0 (en) | 2003-02-12 |
BR0107640A (pt) | 2002-10-08 |
CN1395635A (zh) | 2003-02-05 |
WO2001053588A2 (de) | 2001-07-26 |
WO2001053588A3 (de) | 2002-04-25 |
ES2240423T3 (es) | 2005-10-16 |
EP1250482B1 (de) | 2005-04-13 |
CA2392835A1 (en) | 2001-07-26 |
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