CN101421015B - 真空吸尘器用滤袋及其应用 - Google Patents

真空吸尘器用滤袋及其应用 Download PDF

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CN101421015B
CN101421015B CN2007800127636A CN200780012763A CN101421015B CN 101421015 B CN101421015 B CN 101421015B CN 2007800127636 A CN2007800127636 A CN 2007800127636A CN 200780012763 A CN200780012763 A CN 200780012763A CN 101421015 B CN101421015 B CN 101421015B
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filter bag
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CN101421015A (zh
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扬·舒尔廷克
拉尔夫·绍尔
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Eurofilters NV
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1615Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of natural origin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/16Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/0216Bicomponent or multicomponent fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065More than one layer present in the filtering material
    • B01D2239/0668The layers being joined by heat or melt-bonding
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00Gas separation
    • Y10S55/02Vacuum cleaner bags

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

本发明涉及用于真空吸尘器的滤袋。所述滤袋由包含至少三层的复合材料制成。其中由无纺织物层和至少一个无纺纤维层构成的至少两层通过焊接接头连接。本发明还涉及这种滤袋的应用。

Description

真空吸尘器用滤袋及其应用
本发明涉及复合材料制成的用于真空吸尘器的滤袋,所述复合材料包含至少三层,其中由无纺织物层和至少一个无纺纤维层构成的至少两层通过焊接接头连接。本发明还涉及这种滤袋的应用。
在过去数年中,已知关于替换现有技术中长期已知的用单层或多层纸或织物制成的过滤材料已有大量发展。在EP1258277B1和EP0960645B1中描述了灰尘滤袋,其中使用由无纺材料制成的复合材料作为过滤材料。该复合材料包括具有不同过滤特性的至少两层。
此外,在EP1197252A1中描述了由无纺材料制成的过滤介质,其中通过超声波焊接连接带静电的裂膜纤维(Splitfasern)以形成由无纺材料制成的密实网(Verfestigten Vlies)。还为了赋予层材料以相应的稳定性,因而设置为相对于过滤材料全部表面的至少5%的表面具有焊接接头并且每cm2具有至少两个焊接接头。由此实现单根纤维通过超声波焊接直接相互连接。所提及的此种过滤介质的优点是生产成本相对于针织法明显减少并因此获得均匀性,从而获得相对于例如通过针织连接的那些过滤材料的改进。
在上述欧洲专利申请中还提出这种稳定化的过滤介质还可以连接至其它无纺织物层。
EP1197252A1的过滤介质最主要的缺点在于灰尘储存能力根本不足以应对室内灰尘。
此外,由US5900305已知一种包含2~20个熔喷型无纺织物(Meltblown)层(超细无纺纤维层)的静电过滤介质。该熔喷型无纺织物层通过焊接接头而相互连接。将根据US5900305的过滤介质用于所要滤过的介质存在最大变化粒径的灰尘滤袋的情况下,不利之处在于所述灰尘滤袋的灰尘储存能力不足。
由此出发,本发明的一个目的是提供一种滤袋,所述滤袋的过滤材料与现有技术中所述的滤袋材料相比,具有明显更高的灰尘储存能力并且同时产生的压力损失尽可能低。
通过权利要求1的技术特征实现该目的。从属权利要求披露了有利的改进。
根据本发明,提供了一种用于真空吸尘器的滤袋,所述滤袋由过滤材料构成,所述过滤材料包含至少三层,其中由至少一个无纺织物层和至少一个无纺纤维层构成的至少两层通过焊接接头连接。对于根据本发明的滤袋,还需要称为无纺纤维层的层含有长丝和/或短纤维,但不包含带电的裂膜纤维,并且焊接接头图案的压缩表面积比例为滤袋的可透过表面的表面积的至多5%。还提出相对于总的可透过表面积,平均每10cm2存在至少20个焊接接头。
对于本发明的目的而言,重要的是根据本发明的滤袋的过滤材料除了其它层之外,还包含由至少两个不同层构成的复合材料,即由至少一个无纺纤维层和至少一个无纺织物层构成的复合材料。
在本发明的意义上,无纺纤维层理解为由松散敷设的纤维或长丝构成的层。敷设纤维的方法是无纺织物领域的现有技术所已知的。在无纺织物生产中,进行的主要工艺步骤是原料处理、成网、纤网压缩(Vliesverfestigung)、无纺织物整理。因此,在成网过程中产生的松散但未粘合的纤维网称为纤网(web)(参见Vliesstoffe W.Albrecht,H.Fuchs,W.Kitte1mann,Wiley VCH,2000)。经过纤网粘合步骤,由纤维网制成无纺织物,并且该无纺织物具有足够的强度以例如卷绕成卷。在根据本发明的无纺纤维层生产过程中不进行上述最后一步,而是代之以将纤网粘合至无纺织物层。
从材料的观点出发,在复合材料中与无纺织物层共存的本发明的无纺纤维层包括现有技术中已知的所有短纤维和/或长丝。在本发明的意义上,短纤维也理解为原纤化薄膜纤维(裂膜纤维)和卷曲纤维。根据本发明重要的是至少裂膜纤维是不带电的。本发明人能够证明即使无纺纤维层的所有纤维都不带电,始终仍然实现关于灰尘储存能力的优异性能。
根据本发明已经证明作为卷曲纤维是特别有利的,卷曲纤维具有空间结构,例如锯齿型、波浪型和/或螺旋型结构。这种纤维的优点在于其显著增加介质的膨松性这一事实。
卷曲纤维可以是机械卷曲纤维、自动卷曲纤维和/或双组分卷曲纤维。例如在欧洲专利EP0854943和PCT/GB00/02998中描述了自动卷曲纤维。双组分卷曲纤维可例如通过日本的Chisso Corporation获得,而螺旋型的卷曲聚酯短纤维可通过美国的Gepeco获得。
在本发明中,可以使用选自天然纤维和/或化学纤维的短纤维。化学纤维的例子特别是聚烯烃和聚酯。天然纤维的例子是纤维素、木纤维、木棉、亚麻。
根据本发明的短纤维的长度为1~100mm,优选3~70mm。根据本发明的无纺纤维层的质量表面密度(fl
Figure G2007800127636D0003085839QIETU
chenbezogene Masse)为10~200g/m2,优选20~100g/m2
根据本发明的滤袋的无纺织物层优选为支撑层或承载层,并且具有至少5g/m2的质量表面密度。有利的是使用松散织物(Scrim)作为无纺织物层本身。松散织物被理解为可用作承载层或增强层的任意透气材料。其可以是无纺织物、纺织材料或网织品。优选地,其由热塑性聚合物构成,以利于与无纺纤维层的可焊接性。松散织物的例子是纺粘型无纺织物(Spinnvliese)。然而,所述松散织物也可以是具有足够机械稳定性的干法或湿法敷设的无纺材料。根据本发明,此种无纺织物层的质量表面密度优选为10~200g/m2,特别优选20~100g/m2。以g/m2作为单位的质量表面密度是根据DIN EN29073-1来确定的。
根据本发明的滤袋包含至少三层,其中由至少一个上述无纺织物层和至少一个上述无纺纤维层构成的至少两层通过焊接接头连接。重要的是焊接接头图案的压缩表面积比例为滤袋的可透过表面的表面积的至多5%,并且相对于滤袋的总可透过表面积,平均每10cm2存在至少20个焊接接头。特别优选每10cm2存在至少25个焊接接头,尤其优选每10cm2存在至少50个焊接接头。此外,有利的是焊接接头均匀分布在所述滤袋的可透过表面区域上。
当然,所述焊接接头还可以布置在可透过表面区域的孤立区域中。
焊接接头本身可以具有星型、点状、条状和/或线型构型。对于所要施加的焊接接头几何构型,特别有利的是选择呈现为垫状构型的排列。尤其是利用这种垫状构型,亦即通过线型地施加彼此具有规定距离的焊接接头,可以实现高于平均水平的灰尘储存能力。
作为常规的焊接方法,对于滤袋可以选择本身为现有技术所已知的超声波焊接。
在根据本发明的滤袋的情况下,还有利的是所述复合材料由中间设置有无纺纤维层的两层无纺织物层构成。所述复合材料还可由中间设置有无纺纤维层的无纺织物层和细纤维纺粘型无纺织物层构成。当然,所述复合材料可以包括其它细纤维纺粘型无纺织物层。优选的是细纤维纺粘型无纺织物层具有不同的过滤特性,对于灰尘滤袋而言有利的是将细纤维纺粘型无纺织物层置于流出侧。
作为在所述复合材料中可以额外包含的其它层,应该提及的有纸、无纺织物材料和/或纳米纤维层。所有的层还可以通过超声波焊接而连续地相互连接。

Claims (25)

1.一种由过滤材料制成的用于真空吸尘器的滤袋,所述过滤材料包含至少三层,其中由质量表面密度为至少5g/m2的至少一个无纺织物层和至少一个无纺纤维层构成的至少两层通过焊接接头连接,其特征在于:
所述无纺纤维层包含长丝和/或短纤维,但不包含带电的原纤化薄膜纤维,其中所述无纺纤维层的质量表面密度为10~200g/m2,其中所述焊接接头图案的压缩表面积比例为所述滤袋的可透过表面的表面积的至多5%,并且相对于所述滤袋的总可透过表面积,平均每10cm2存在至少20个焊接接头,其中通过线型地施加彼此具有规定距离的焊接接头而呈现出垫状构型。
2.根据权利要求1所述的滤袋,其特征在于:平均每10cm2存在至少25个焊接接头。
3.根据权利要求2所述的滤袋,其特征在于:存在至少50个焊接接头。
4.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述焊接接头均匀地分布在所述滤袋的可透过表面区域上。
5.根据权利要求1所述的滤袋,其特征在于:所述焊接接头不均匀地分布在所述滤袋的可透过表面区域上。
6.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述焊接接头具有星型、点状、条状和/或线型构型。
7.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述焊接接头图案的压缩表面积比例为至少2%。
8.根据权利要求7所述的滤袋,其特征在于:所述焊接接头图案的压缩表面积比例为至少3%。
9.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述短纤维的长度为1~100mm。
10.根据权利要求9所述的滤袋,其特征在于:所述短纤维的长度为3~70mm。
11.根据权利要求1所述的滤袋,其特征在于:所述短纤维为卷曲纤维。
12.根据权利要求11所述的滤袋,其特征在于:所述卷曲纤维具有不同的空间结构。
13.根据权利要求12所述的滤袋,其特征在于:所述空间结构为锯齿型、波浪型和/或螺旋型。
14.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述短纤维选自天然纤维和/或化学纤维。
15.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述无纺纤维层的质量表面密度为20~100g/m2
16.根据权利要求15所述的滤袋,其特征在于:所述无纺织物层是松散织物。
17.根据权利要求16所述的滤袋,其特征在于:所述无纺织物层为纺粘型无纺织物或熔喷型无纺织物层。
18.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述过滤材料由中间安置有所述无纺纤维层的两层无纺织物层构成。
19.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述过滤材料由中间安置有所述无纺纤维层的无纺织物层和微细过滤纺粘型无纺织物层构成。
20.根据权利要求1~3中任一项所述的滤袋,其特征在于:所述过滤材料包含至少一个细纤维纺粘型无纺织物层。
21.根据权利要求20所述的滤袋,其特征在于:所述细纤维纺粘型无纺织物层具有不同的过滤特性。
22.根据权利要求20所述的滤袋,其特征在于:所述细纤维纺粘型无纺织物层设置在流出侧。
23.根据权利要求1~3中任一项所述的滤袋,其特征在于:存在由纸、无纺织物材料和/或纳米纤维形成的其它层。
24.根据权利要求1~3中任一项所述的滤袋,其特征在于:所有的所述层通过超声波焊接而连续地连接。
25.根据权利要求1~24中任一项所述的滤袋作为真空吸尘器袋的应用。
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DE102006017553A DE102006017553B3 (de) 2006-04-13 2006-04-13 Filterbeutel für einen Staubsauger
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PCT/EP2007/003180 WO2007118640A2 (de) 2006-04-13 2007-04-10 Filterbeutel für einen staubsauger sowie dessen verwendung

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EP (1) EP2004303B1 (zh)
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EP2004303A2 (de) 2008-12-24
NO20084767L (no) 2009-01-13
US20090266233A1 (en) 2009-10-29
CN101421015A (zh) 2009-04-29
WO2007118640A3 (de) 2007-12-06
ES2386155T3 (es) 2012-08-10
EP2004303B1 (de) 2012-05-23
AU2007237471B2 (en) 2011-08-18
NO341612B1 (no) 2017-12-11
WO2007118640A2 (de) 2007-10-25
DE102006017553B3 (de) 2007-12-27
AU2007237471A1 (en) 2007-10-25
US8152879B2 (en) 2012-04-10

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