EP0714248A1 - Brosse de nettoyage non tissee - Google Patents

Brosse de nettoyage non tissee

Info

Publication number
EP0714248A1
EP0714248A1 EP94927171A EP94927171A EP0714248A1 EP 0714248 A1 EP0714248 A1 EP 0714248A1 EP 94927171 A EP94927171 A EP 94927171A EP 94927171 A EP94927171 A EP 94927171A EP 0714248 A1 EP0714248 A1 EP 0714248A1
Authority
EP
European Patent Office
Prior art keywords
sections
web
rotary brush
polymer component
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94927171A
Other languages
German (de)
English (en)
Other versions
EP0714248B1 (fr
Inventor
James M. Allan
Barry A. Brandley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of EP0714248A1 publication Critical patent/EP0714248A1/fr
Application granted granted Critical
Publication of EP0714248B1 publication Critical patent/EP0714248B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/001—Cylindrical or annular brush bodies
    • A46B13/003—Cylindrical or annular brush bodies made up of a series of annular brush rings; Annular brush rings therefor
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B13/00—Brushes with driven brush bodies or carriers
    • A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers

Definitions

  • the present invention relates to a nonwoven thermally bonded fiber compressed brush construction suitable for use in caustic mill environments such as in steel strip mills, for example. More specifically, the invention relates to a brush for use in caustic environments wherein the brush is made from a plurality of compressed annular sections made of bicomponent nonwoven fibers.
  • the brushes of the present invention are made of fibers that can withstand extremely caustic environments without requiring resinous coatings, binders or the like.
  • steel strip Prior to electrolytic tin plating, steel strip must be thoroughly cleaned. This is done on a continuous basis in steel strip mills by passing the strip through a hot caustic cleaning tank and then through hot water rinse tanks. Brushes are commonly used in the cleaning process to agitate the surfaces of the steel strip.
  • bristled brushes have been made from any of a variety of materials.
  • bristled brushes were commonly used in the cleaning process and typically had natural vegetable fiber bristles.
  • brushes having tampico bristles made from a coarse grass-like plant grown in the region around Tampico, Mexico (hereinafter “tampico bristled brushes”) had enjoyed widespread use in steel strip cleaning applications.
  • Bristled brushes may also include bristles of a synthetic construction such as polypropylene, for example. Bristled brushes, however, experienced a short service life in the caustic environment of steel strip mills.
  • the phenolic bonded nylon web brush has also exhibited some shortcomings in the caustic environments in which it has been used. Although it generally enjoyed a much longer useful life than the tampico bristled brushes, the nylon web brushes are known to degrade and generate waste or "fluff" as a result of the gradual breakdown under hot caustic conditions (typically pH 13 and 80°C) of the protective phenolic resin binder coating the nylon fibers. The fluff is caused by the release of the nylon staple fibers. The generation of fluff is problematic because it is difficult to clean out of the steel mill cleaning lines and it tends to block filters.
  • the present invention overcomes the noted problems in the art by providing a rotary brush suitable for use in cleaning steel strip rolls and the like in caustic environments, the brush comprising: a cylindrical body rotatable about its longitudinal axis, said body comprising a compressed stack formed of a plurality of like-oriented annular sections, each section assembled about a central carrier, the sections each comprising a nonwoven web of crimped bi-component fibers comprised of a first polymer component and a second polymer component having a melting temperature lower than the melting temperature of said first polymer component, said first polymer component and said second polymer component attached to one another within each section by melt bonding, said body having a density of between about 50 and about 250 kg/m 3 .
  • the fibers making up the compressed annular sections are preferably a combination of polyolefins (e.g. polypropylene and polyethylene) but may also include polyesters and other materials.
  • the annular sections are preferably needle tacked prior to melt bonding. Spacers may be interposed between the annular sections so that the finished brush will include a plurality of annular sections and spacers in a predetermined ratio.
  • a preferred method of manufacturing the rotary brushes of the present invention comprises: preparing an air laid web of crimped bicomponent fibers comprising a first polymer component and a second polymer component having a melting temperature lower than the melting temperature of said first polymer component; bonding said first and second polymer components to one another within said web by heating said web to a temperature sufficient to soften said second polymer component and cause melt bonding between said polymer components within said web; preparing a plurality of annular sections from said nonwoven web; orienting said plurality of annular sections for rotation about a common axis; compressing said plurality of sections along said common axis with a force sufficient to achieve a compacted configuration of said sections having a density of between about 50 and about 250 kg/m 3 ; and restraining said annular sections in said compacted configuration.
  • Figure 1(a) is a plan view of one surface of an annular section of a nonwoven web suitable for inclusion in a rotary brush body according to a first embodiment of the present invention
  • Figure 1(b) is a plan view of a surface of a spacer suitable for inclusion in a rotary brush body according to a first embodiment of the present invention
  • Figure 1(c) is an exploded view of the elements of a rotary brush body according to a first embodiment of the invention
  • Figure 1(d) is a perspective view of a completed rotary brush body according to a first embodiment of the invention
  • Figure 2(a) is a plan view of an annular section of a nonwoven web suitable for inclusion in a rotary brush body construction according to a second embodiment of the invention
  • Figure 2(b) is a plan view of a surface of a spacer suitable for use in a rotary brush body according to a second embodiment of the invention
  • Figure 2(c) is an exploded view of the elements of a rotary brush according to a second embodiment of the invention.
  • Figure 2(d) is a perspective view of the completed rotary brush according to the second embodiment of the invention.
  • figures 1 and 2 illustrate, respectively, first and second embodiments of a compressed cleaning brush made of a nonwoven thermally bonded fiber web.
  • Figures 1(a)-(d) show various features of a first embodiment of the invention, showing the brush 30 and its components in a tie-bolt construction.
  • Figures 2(a)-(d) illustrate another embodiment of the invention showing the same brush material utilized in a bonded brush construction 40.
  • the web includes no phenolic resin binders.
  • the brushes described herein could be made into a flap brush type construction as well as the compressed section type.
  • a nonwoven web is used to prepare the annular sections 10 and 20.
  • bicomponent fibers be used without additional resins (e.g. phenolic resins) or the like to either protect or bind the fibers of the web.
  • Preferred web fibers include certain polymer fibers such as polyolefin fibers, polyester fibers and combinations thereof. More preferably, polyolefin bicomponent fibers are used and most preferably polyethylene and polypropylene crimped staple fibers.
  • the fiber diameter can be important.
  • Polyolefin fibers in deniers from about 3 to about 40 denier are preferred.
  • the fiber length can range from being virtually continuous to being of finite length.
  • Crimped polyolefin staple fibers having lengths from about 25 millimeters to about 64 millimeters and more preferably from about 38 to about 50 millimeters have been useful in preparing webs using conventional web forming equipment.
  • the fibers may be only slightly crimped and the nature of the fiber crimp includes conjugate or helical crimps.
  • the fibers are thermoplastic bi-component, i.e. sheath and core type or side-by-side type, one component preferably being polypropylene and the other preferably polyethylene. It is also contemplated that polyester bicomponent fibers may be used.
  • the preferred construction of the web includes no additional resinous materials to bond or protect the fibers of the web.
  • An important aspect of the invention is the manufacture of a bicomponent web wherein the fibers are melt bonded to one another at the fiber contact points within the web.
  • the web is typically heated to the temperature of the lower melting point polyethylene component while the higher melting point polypropylene component maintains its dimensions during the heating step. During this heating step, the melted polyethylene fibers bond with the polypropylene at the contact points of the fibers within the web and the web experiences only minimal shrinkage during bonding.
  • Preferred webs for the brush construction are those made in web basis weights from about 100 grams per square meter ("gsm") to about 500 gsm and those having a web thickness of from about 5 millimeters to about 25 millimeters.
  • the above described nonwoven webs may be manufactured in a known manner by using a RANDO WEBBER brand machine (Rando Machine Corporation, Ard, NY) or a FIBER LOCKER brand machine (James Hunter, North Adams, Mass.) .
  • Needle tacking is a known technique which uses barbed or felting needles to further entangle the fibers of a nonwoven web by forcing the needles into the web in a predetermined manner. Where needle tacking has been employed, satisfactory webs have been achieved by using a needle tacker machine fitted with a multiplicity of needles, typically 15 x 18 x 30 x 3.5 CB Foster felting needles fitted to the needle board.
  • One preferred needle bar layout includes five rows spaced apart at distances of 8.5 mm, 8.5 mm, 10 mm and 6.5 mm and with the needles in each row evenly spaced at a distance of 12.5 mm.
  • the web is transported by conveyors through a preheated oven.
  • Air flow is deflected through the web with angled baffles above and below a carrier mesh belt and the web is heated to the softening or melting temperature of one of the component fibers.
  • the web is heated to a temperature from about 142°C to about 148°C to induce heat fusion of the fibers.
  • the temperature of the oven may be varied over a range of temperatures depending upon the weight of the web and the speed at which the web is fed through the oven. It has been found that satisfactory webs are produced by feeding the nonbonded web material having a weight of about 200 gsm at a line speed of four meters per minute through a 25 meter long oven maintained at a temperature of about 142°C.
  • the temperature of the oven must also be increased.
  • a 250gsm web for example, has been adequately bonded at a temperature of about 148°C when conveyed through the oven at a conveyor speed of five meters per minute.
  • the bonded web is cooled on exiting the oven with an air knife and passed through a dancing nip roller from which it enters a festoon accumulator prior to being wound onto a master roll or "jumbo".
  • Annular sections 10, 20 are then punched from the manufactured web.
  • the sections 10, 20 are punched from the web in a variety of diameters which will typically vary between about 200 millimeters and about 600 millimeters, depending on brush requirements as well as the available physical space in the cleaning line(s) where the finished brush is to be installed. It will be appreciated that the invention does not require any real limit to the web diameter or to the brush length other than what might be imposed by engineering design considerations.
  • the web sections 10, 20 are formed with center apertures 70, 80 which may include opposing squared-off keyway slots 90 (Figure la) to fit over a key element on a support shaft. Additional slots 92 may be provided to engage long tie-bolts (or axle bolts) 100 which hold the brush components together during the assembly process. Where a glued brush construction is required, tie bolts 100 are not used and the sections 20 and spacers 50 are adhered to a steel core 110 as shown in Figures 2(a)-(d), for example.
  • Spacers 50, 60 are provided for positioning between web sections.
  • the spacers 50, 60 are typically made from a thermoplastic material such as polypropylene, and are provided with a center hole configuration similar (and usually identical) to the apertures 70, 80 of the webs 10, 20. As shown, the spacers are provided with a smaller outer diameter than the annular sections 10 and 20.
  • the spacers are positioned between annular sections along an assembly shaft such as the axle bolts 100 in a predetermined number of spacers per finished brush and at a predetermined number of annular sections per spacer.
  • the section to spacer ratio in the brushes of Figures 1 and 2 for example, is 3:1 and the loading of annular sections is typically 12.5 sections per 25 millimeters of brush length.
  • this brush loading and the section to spacer ratio is not limiting in any way. It is contemplated that preferred brush loadings could range between about 5 and about 20 sections per 25 millimeters and the preferred section to spacer ratios could range from about l:0 to about 5:1.
  • the use of spacers 50, 60 within the construction of the brushes disclosed herein is generally desired because the spacers allow the annular web sections 10, 20 in the finished brush some freedom to move laterally at their peripheral portions for proper cleaning operations while also firmly reinforcing the annular sections 10, 20 along their inner diameters. Spacers made of polypropylene having an outer diameter of 200 millimeters, an inner diameter of 109 mm and a thickness of 1.9 mm have been satisfactory.
  • the annular sections 10 and the spacers 50 are assembled along the axle bolts 100 between end flanges 120.
  • the sections 20 and the spacers 150 are positioned along the core 60. After a predetermined number of spacers and annular sections have been assembled as described above, the spacers and the annular sections are compressed under a sufficient force at room temperature to make a dense nonwoven brush structure of a predetermined length which can then be loaded onto working shafts (not shown) for cleaning operations in steel mills.
  • the compacted densities of the brushes of the present invention are preferably at least about 5 kg/m 3 and more preferably between about 50 and about 250 kg/m 3 and most preferably about 125 kg/m 3 .
  • the compaction force may be applied by any suitable means available to those in the art.
  • the annular sections and the spacers are then restrained in their compacted configuration by any suitable means such as the end flanges 120 or locking collars adapted to be slidable on and mechanically engagable with the axle bolts 100.
  • the sections 20 and the spacers 150 of figure 2 may be held on the core 60 by adhesive bonding.
  • the preferred hardness of the finished brushes as measured by the Shore A2 scale is between about 5 and about 25.
  • the web is made from a side-by-side bi-component polyethylene/polypropylene staple fiber supplied by Chisso Corporation (Polypropylene Fiber Division, 6-32 Naanoshima 3, Kita-Ku, Osaka 530, Japan) and termed Chisso Type ES.
  • the preferred staple fiber is 18 denier and length 64 millimeters.
  • the preferred web weight is 250gsm.
  • the web may be needle punched at a punch density of about 8 punches/cm 2 by needletacking at 760 cycles/min and with a penetration of 21 millimeters into the web at a line speed of four meters per minute.
  • a preferred brush construction 30, 40 includes about 600 annular sections and about 200 polypropylene spacers 50, 60, each about 1.9 millimeters thick to form a 1.2 meter long x 406 millimeters diameter compressed brush. It has been found that when the brush of the present invention is run in the same hot caustic application as the conventional nylon/phenolic bonded brush, the brush of the present invention exhibited an extended life about 70% greater than the nylon/phenolic brush. The brush of the invention has also been observed to generate reduced "fluff" or waste during normal use in caustic environments.
  • Example A 250 g/m 2 , 50 mm thick nonwoven fabric is prepared by processing "CHISSO" polyethylene/polypropylene sheath/core staple fiber (Chisso Corporation, Osaka, Japan or Chisso America, Inc., New York, NY), 18 denier x 38 mm length using an air lay machine available under the trade designation "RANDO WEBBER” from Rando Machine Corporation, East, NY.
  • the resulting fabric is consolidated by needle tacking using a conventional needletacker with a needle board loaded to 10 needles per inch (3.9 per cm) with needles designated 15x18x30x3.5 CB, available from Foster Needle Company, Manitowoc, WI.
  • the needle tacker is adjusted to provide 85 mm needle penetration and 49 penetrations/in 2 (7.6 penetrations/cm 2 ) .
  • the thus consolidated fabric is passed at 5 m/min. through a 25 meter long forced-draft bonding oven heated to 148°C.
  • the resulting fabric is about 10 mm thick, is well bonded and relatively stiff, and has no fluffy appearance.
  • Annular sections of three different diameters are then cut from the consolidated and bonded fabric. The majority of the sections are cut to provide an outer diameter ("o.d.") of 406 mm and an inner diameter ("i.d.") of 109 mm, the i.d.
  • axle bolts are secured to an end flange in an equiangular array identical to that of the axle bolt notches provided in the sections and spacers.
  • the end flange is also provided with two opposing keyway notches, likewise matching those provided in the sections and spacers.
  • Four 255 mm o.d. annular sections are placed over the axle bolts so that the axle bolts engage the axle bolt notches.
  • a spacer is then placed similarly over the axles bolts, followed by two 300 mm o.d. sections, followed by a spacer, then followed by two 406 mm o.d. sections and subsequently a spacer. This assembly is continued by alternating three 406 mm o.d.
  • the cleaning brush is mounted on a keyed shaft and can then be evaluated as a cleaning brush in a plating operation where it is subjected to a heated (80°C) cleaning solution which is highly caustic, typically having a pH of about 13.
  • the brush will perform the cleaning operation adequately, generating virtually no fluff, and will have a useful life of nearly twice that of a conventional nylon/resin brush.

Landscapes

  • Nonwoven Fabrics (AREA)
  • Brushes (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

Brosse (30) constituée d'un tissu de fibres non tissées à deux constituants et thermiquement liées. Ladite brosse (30) comporte une pluralité de parties annulaires comprimées (10) assemblées autour d'un support central (100), chaque partie étant constituée d'un matelas de fibres à deux constituants, qui ont été bouclées et liées par fusion. Dans un mode de réalisation préféré, ladite brosse (30) possède une masse volumique après tassement située entre environ 50 et environ 250 kilogrammes par mètre cube. Les fibres constituant les sections annulaires comprimées (10) sont de préférence une combinaison de polyoléfines (par ex. du polypropylène et du polyéthylène), mais elles peuvent également inclure des polyesters et d'autres matériaux.
EP94927171A 1993-08-19 1994-08-15 Brosse de nettoyage non tissee Expired - Lifetime EP0714248B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU44761/93A AU659335B2 (en) 1993-08-19 1993-08-19 Non-woven, thermally-bonded fibre, compressed brush construction for caustic mill environments
AU44761/93 1993-08-19
PCT/US1994/009228 WO1995005101A1 (fr) 1993-08-19 1994-08-15 Brosse de nettoyage non tissee

Publications (2)

Publication Number Publication Date
EP0714248A1 true EP0714248A1 (fr) 1996-06-05
EP0714248B1 EP0714248B1 (fr) 1999-05-06

Family

ID=3731961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94927171A Expired - Lifetime EP0714248B1 (fr) 1993-08-19 1994-08-15 Brosse de nettoyage non tissee

Country Status (9)

Country Link
EP (1) EP0714248B1 (fr)
JP (1) JPH09501592A (fr)
KR (1) KR960703532A (fr)
CN (1) CN1129394A (fr)
AU (1) AU659335B2 (fr)
BR (1) BR9407301A (fr)
CA (1) CA2168557A1 (fr)
DE (1) DE69418335D1 (fr)
WO (1) WO1995005101A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020023379A1 (fr) 2018-07-23 2020-01-30 3M Innovative Properties Company Canevas ignifuge à faible poids de base, articles et procédés
WO2020047846A1 (fr) 2018-09-07 2020-03-12 3M Innovative Properties Company Article de protection contre l'incendie et procédés associés
WO2020100066A1 (fr) 2018-11-14 2020-05-22 3M Innovative Properties Company Toile non tissée ignifuge
WO2020100067A1 (fr) 2018-11-14 2020-05-22 3M Innovative Properties Company Ensemble de fibres non tissées ignifuge
WO2020261011A1 (fr) 2019-06-25 2020-12-30 3M Innovative Properties Company Mousse résistante à la flamme et bande fibreuse non tissée associée
WO2020261012A1 (fr) 2019-06-25 2020-12-30 3M Innovative Properties Company Nappe fibreuse non tissée
WO2022144730A1 (fr) 2020-12-28 2022-07-07 3M Innovative Properties Company Ensemble batterie et procédés

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718589C2 (de) * 1997-05-02 1999-11-04 Wesumat Gmbh Arbeitswalze, insbesondere Waschwalze für Fahrzeugwaschanlagen
ES2323164T5 (es) 2000-09-15 2016-06-14 Suominen Corporation Tela de limpieza no tejida desechable y procedimiento de fabricación
JP2004321748A (ja) * 2003-04-25 2004-11-18 Kowa Co Ltd 洗浄ブラシ
US8549753B2 (en) * 2009-05-14 2013-10-08 Corning Incorporated Methods of manufacturing a modular pulling roll
CN102152589B (zh) * 2010-02-11 2014-05-07 逢甲大学 全聚酯自增强复合材料、制造方法及其应用
KR200466142Y1 (ko) * 2011-07-21 2013-04-03 김차희 먼지제거장치용 브러쉬어셈블리
CN102962216B (zh) * 2011-09-01 2016-04-27 株式会社光和 辊以及辊组件
JP6300441B2 (ja) * 2012-12-27 2018-03-28 スリーエム イノベイティブ プロパティズ カンパニー 円形支持板、不織布研磨ロール、ロール組立体及び研磨方法
EP3826845A4 (fr) 2018-07-23 2022-03-09 3M Innovative Properties Company Matériaux d'isolation thermique et procédés associés

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU569108B2 (en) * 1983-10-11 1988-01-21 Minnesota Mining And Manufacturing Company Web of bicomponent fibers
US4669163A (en) * 1985-12-12 1987-06-02 Minnesota Mining And Manufacturing Company Polyolefin fiber roll
JPH024019A (ja) * 1988-06-20 1990-01-09 Mitsubishi Electric Corp 発振制御装置
JP3245170B2 (ja) * 1992-08-24 2002-01-07 ミネソタ マイニング アンド マニュファクチャリング カンパニー 溶融結合された不織布製品とその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9505101A1 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020023379A1 (fr) 2018-07-23 2020-01-30 3M Innovative Properties Company Canevas ignifuge à faible poids de base, articles et procédés
WO2020047846A1 (fr) 2018-09-07 2020-03-12 3M Innovative Properties Company Article de protection contre l'incendie et procédés associés
WO2020100066A1 (fr) 2018-11-14 2020-05-22 3M Innovative Properties Company Toile non tissée ignifuge
WO2020100067A1 (fr) 2018-11-14 2020-05-22 3M Innovative Properties Company Ensemble de fibres non tissées ignifuge
WO2020261011A1 (fr) 2019-06-25 2020-12-30 3M Innovative Properties Company Mousse résistante à la flamme et bande fibreuse non tissée associée
WO2020261012A1 (fr) 2019-06-25 2020-12-30 3M Innovative Properties Company Nappe fibreuse non tissée
WO2022144730A1 (fr) 2020-12-28 2022-07-07 3M Innovative Properties Company Ensemble batterie et procédés
WO2022146867A1 (fr) 2020-12-28 2022-07-07 3M Innovative Properties Company Ensemble batterie et procédés

Also Published As

Publication number Publication date
DE69418335D1 (de) 1999-06-10
JPH09501592A (ja) 1997-02-18
BR9407301A (pt) 1996-10-08
AU659335B2 (en) 1995-05-11
AU4476193A (en) 1995-03-02
KR960703532A (ko) 1996-08-31
EP0714248B1 (fr) 1999-05-06
CN1129394A (zh) 1996-08-21
CA2168557A1 (fr) 1995-02-23
WO1995005101A1 (fr) 1995-02-23

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