EP3162502A1 - Non-tisse abrasif et son procede de fabrication - Google Patents

Non-tisse abrasif et son procede de fabrication Download PDF

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Publication number
EP3162502A1
EP3162502A1 EP15191975.0A EP15191975A EP3162502A1 EP 3162502 A1 EP3162502 A1 EP 3162502A1 EP 15191975 A EP15191975 A EP 15191975A EP 3162502 A1 EP3162502 A1 EP 3162502A1
Authority
EP
European Patent Office
Prior art keywords
nonwoven
abrasive
unit
yarn
nonwoven fibers
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.)
Withdrawn
Application number
EP15191975.0A
Other languages
German (de)
English (en)
Inventor
Martin Joppich
Achim JÄGER
Jörn-Oliver NOLTE
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.)
VSM Vereinigte Schmirgel- und Maschinen-Fabriken AG
Original Assignee
VSM Vereinigte Schmirgel- und Maschinen-Fabriken AG
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 VSM Vereinigte Schmirgel- und Maschinen-Fabriken AG filed Critical VSM Vereinigte Schmirgel- und Maschinen-Fabriken AG
Priority to EP15191975.0A priority Critical patent/EP3162502A1/fr
Priority to KR1020187014558A priority patent/KR20180075578A/ko
Priority to BR112018008664A priority patent/BR112018008664A2/pt
Priority to US15/771,359 priority patent/US10843309B2/en
Priority to FIEP16790558.7T priority patent/FI3368247T3/en
Priority to EP16790558.7A priority patent/EP3368247B1/fr
Priority to CN201680069501.2A priority patent/CN108290275A/zh
Priority to PCT/EP2016/076061 priority patent/WO2017072293A1/fr
Publication of EP3162502A1 publication Critical patent/EP3162502A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B24D3/28—Resins or natural or synthetic macromolecular compounds

Definitions

  • the invention relates to a nonwoven abrasive fabric and a method for its production.
  • the starting material for such abrasive nonwovens are materials such as nylon, polyester or mixtures thereof.
  • the starting material is first subjected to web formation and then to a subsequent web consolidation. At the end of these steps, the web is a pre-bonded web that does not yet contain any abrasive particles.
  • the web is then passed through an adhesive coater and then through a particle coater to apply the abrasive particles.
  • the adhesive is a suitable synthetic resin, which cures in a heat stage and then binds the abrasive particles to the starting material.
  • a problem with the described production method is to produce the abrasive nonwoven with as homogeneous and reproducible properties.
  • the object of the invention is therefore to improve the homogeneity and the reproducibility of the produced nonwoven fabric.
  • Fig. 1 shows the overall view of a plant for the production of abrasive yarn.
  • the plant consists of a mixing unit 101, an extruder 103, a spinneret 105, a bundling unit 107 and a coating unit 109.
  • the granules are compacted under high pressure and made to melt.
  • the molten granules are then fed via the melt channel 104 of the spinneret 105.
  • the spinneret 105 is maintained at the required spinning temperature by a heating unit, not shown further (for example, at 290 ° C for nylon).
  • the spinneret 105 has a plurality of spinning orifices which have a suitable diameter depending on the viscosity of the melt in order to be able to spin continuous filaments.
  • the diameter per spin opening is 0.4 mm, for example.
  • the number of spinning orifices can vary widely, depending on the required strength and the required diameter of the abrasive yarn, starting from a single spinning orifice up to a few hundred spinning orifices.
  • the spinning opening itself can be shaped differently. In addition to a circular Opening, for example, a star-shaped opening is conceivable to improve in this way, for example, the surface adhesion of the resin or binder.
  • the threads 106 spun by the spinneret are then gathered together at the inlet of the bundling unit 107 where they are mixed together to form a coherent yarn 108.
  • a detailed description of the bundling unit 107 will be given below with reference to FIG Fig. 2 ,
  • A marks a first process interface.
  • the first process interface A is intended to indicate that there are various possibilities at this point for the further processing of the yarn 108.
  • One possibility is in accordance with Fig. 1
  • Another possibility is to wind the yarn 108 on the first process interface A on coils and to store these coils until further processing.
  • the bundle 108 bundled by the bundling unit 107 is then fed to a coating unit 109, in which the yarn 108 is coated with a resin and equipped with abrasive grains.
  • a coating unit 109 in which the yarn 108 is coated with a resin and equipped with abrasive grains.
  • B denotes a second process interface.
  • the second process interface B should in turn indicate that there are also various possibilities at this point to further process the grinding yarn 112.
  • abrasive yarn 112 is stored for direct further processing, for example on a conveyor belt 110.
  • the belt speed v and thus also the density of the deposited material 113 can be influenced.
  • the deposited material 113 can then be further processed, for example, to form a nonwoven.
  • Another possibility of further processing the abrasive yarn 112 at the second process interface B is that the abrasive yarn 112 is wound up and then further processed by a weaving process into a fabric abrasive.
  • the main controller 114 is connected to the components described in the manner shown to measure and control the relevant process parameters.
  • Fig. 2 shows a detailed view of the bundling unit 107 Fig. 1 .
  • the freshly spun threads are first collected at the ring opening 201.
  • Another object of the ring opening 201 is to center the gathered threads with respect to the subsequent suction jet unit 202.
  • the ring opening 201 in the plane perpendicular to the transport direction of the combined threads by a Not shown positioning device can be adjusted.
  • the suction jet unit 202 is composed of a longitudinal guide unit 203, an air injector unit 204, and a compressed air port 205.
  • the inner diameter of the longitudinal guide unit 203 is slightly smaller (for example, 2 mm) than the inner diameter of the air injector unit 204 (for example, 3 mm).
  • compressed air is connected at a pressure of, for example, 7 kg / cm 2 , so that the compressed air follows the indicated path according to the arrows 206. In this way, a high-speed suction jet is produced in the air injector unit 204.
  • the flow rate in the middle of the channel can be several kilometers / minute.
  • a typical flow velocity in the middle of the channel is for example 3000 m / min.
  • the suction jet deters the freshly spun threads 106 and at the same time causes a rippling of the threads with each other in an irregular and arbitrary manner.
  • the speed of the yarn Since the speed of the yarn has some slip (for example 10%) with respect to the flow rate of the air, the speed of the yarn is correspondingly lower (for example 2700 m / min) than that of the air flow (as mentioned above, for example 3000 m / min).
  • the air injector unit 204 Within the air injector unit 204, around the semi-solid filaments, flow vortices and turbulences that cause the semi-solid filaments to mix form cure and thus form a coherent yarn. In addition, the air flow within the air injector unit 204 exerts a suction effect on the yarn, so that the yarn is further transported, tapered and oriented and thus finally leaves the bundling unit 107 as coherent yarn 108.
  • Fig. 3 shows a detailed view of the coating unit 109 Fig. 1 ,
  • the coating unit 109 basically includes a take-off roller unit 301, a dancer roller unit 302, a primer coating nozzle 303, an abrasive coating nozzle 304, a UV irradiation unit 307, and a control measurement unit 308.
  • the take-off rollers 301 are controlled in their speed so that sets a loose yarn tension in the transport direction within the yarn 108 at the entrance of the coating unit 109.
  • a dancer roll unit 302 is provided in the known manner.
  • the primer coating die 303 includes a primer or adhesive 305 such that an adhesive layer is formed on the yarn 108 as the yarn 108 passes through the primer coating die 303.
  • the adhesive layer improves the adhesion and adhesion of the subsequent coating in the abrasive coating die 304.
  • the thickness of the adhesive layer can be determined by the feed rate of the adhesive 305 and optionally adjusted by an adjustable diameter of the primer coating die 303.
  • the adhesive layer yarn 108 is then passed through the abrasive coating die 304, which contains a mixture 306 comprised of a photohardening resin, abrasive grains, and a filler material.
  • the mixture 306 adheres to the adhesive layer so that the desired abrasive layer is formed in the outer diameter.
  • the thickness of the abrasive layer may be adjusted by the feed rate of the mixture 306, and optionally also by an adjustable diameter of the abrasive coating die 304.
  • the primer coating nozzle 303 and the abrasive coating nozzle 304 each have activatable closures which retain or release the coating material in the desired manner.
  • the abrasive coating die 304 alone, or even the primer coating die 303 and the abrasive coating die 304 may be driven together in a regular stroke or even a specific stroke pattern to selectively apply an intermittent coating to the abrasive yarn.
  • the yarn 108 enters the UV irradiation unit 307 behind the abrasive coating die 304, so that the photo-curing resin hardens and holds the abrasive grains together.
  • the wavelength of the UV light of the UV irradiation unit 307 depends on the respective resin, and may be in the range of 200 nm to 500 nm, for example.
  • the curing of the synthetic resins used here usually takes place in a wave range of 315-380 nm.
  • the grinding yarn thus formed eventually passes the control measuring unit 308, which measures the outside diameter of the grinding yarn.
  • Coating control unit 309 is connected to the described components as shown to measure and control the relevant process parameters. Above all, the outer diameter measured by the control measuring unit 308 is evaluated, so that the parameters of the primer coating nozzle 303 and the abrasive coating nozzle 306 can be readjusted based on this evaluation.
  • the atmosphere within the coating unit 109 may additionally be made of nitrogen or an oxygen-reduced one Gas to achieve a stable polymerization of the photocuring resin.
  • the yarn 108 can be produced at very high speeds. In principle, speeds of several 100 meters / minute to several kilometers / minute are possible, so that the production speed in the coating unit 109 can be adapted to the speed of the yarn emerging from the bundling unit 107.
  • fine abrasive grains which have an average diameter of about 2 ⁇ m to 10 ⁇ m can be used as the filling material.
  • the abrasive grains may be made of alumina, silicon carbide, CBN, diamond, zirconia corundum, etc., and the average diameter of the grains may be selected depending on the abrasive application.
  • the abrasive grains may have a mean diameter of 20 ⁇ m to 200 ⁇ m, which in the abrasive range would correspond to a grain size in the range of about P800 to P80.
  • the abrasive grains are added at about 5 volume percent of the photocuring resin liquid and may be pre-wetted with a small amount of ethyl alcohol beforehand.
  • the photo-curing resin liquid may, for example, be an acrylate prepolymer (an oligomer or a monomer) admixed with 1% by weight of an acetophenone derivative as a photoinitiator.
  • the photocuring resin liquid is based on a radical polymerization wherein the radical polymerization of the oligomer or monomer is induced by a free radical generated by the photoinitiator which is irradiated by the ultraviolet light.
  • the oligomer, the monomer and the photoinitiator are not limited to these.
  • an unsaturated polyester may be used as the oligomer, and styrene may be used as the monomer.
  • polyester acrylate for example, polyester acrylate, polyether acrylate, Acryloligomeracrylat, epoxy acrylate, Polybutadienacrylat, silicone acrylate or polyurethane acrylates can be used.
  • monomer for example, N-vinylpyrolidone, vinyl acetate, monofunctional acrylate, bifunctional acrylate or trifunctional acrylate may also be used.
  • polymerization initiator for example, an acetophenone derivative such as acetophonon or trichloroacetophenone, benzoin ether, benzophenone or xanthone can be used.
  • photocuring resin instead of the radical polymerization, light addition polymerization, light cationic polymerization, or acid curing can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP15191975.0A 2015-10-28 2015-10-28 Non-tisse abrasif et son procede de fabrication Withdrawn EP3162502A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP15191975.0A EP3162502A1 (fr) 2015-10-28 2015-10-28 Non-tisse abrasif et son procede de fabrication
KR1020187014558A KR20180075578A (ko) 2015-10-28 2016-10-28 부직 연마 용품 및 이를 제조하기 위한 방법
BR112018008664A BR112018008664A2 (pt) 2015-10-28 2016-10-28 artigo abrasivo não-tecido, bem como procedimento para sua fabricação
US15/771,359 US10843309B2 (en) 2015-10-28 2016-10-28 Non-woven abrasive article, and method for manufacturing same
FIEP16790558.7T FI3368247T3 (en) 2015-10-28 2016-10-28 METHOD FOR MANUFACTURE OF AN ABRASION FELT
EP16790558.7A EP3368247B1 (fr) 2015-10-28 2016-10-28 Procédé de fabrication de non-tissé abrasif
CN201680069501.2A CN108290275A (zh) 2015-10-28 2016-10-28 无纺布磨料及其制造方法
PCT/EP2016/076061 WO2017072293A1 (fr) 2015-10-28 2016-10-28 Non-tissé abrasif et son procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15191975.0A EP3162502A1 (fr) 2015-10-28 2015-10-28 Non-tisse abrasif et son procede de fabrication

Publications (1)

Publication Number Publication Date
EP3162502A1 true EP3162502A1 (fr) 2017-05-03

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP15191975.0A Withdrawn EP3162502A1 (fr) 2015-10-28 2015-10-28 Non-tisse abrasif et son procede de fabrication
EP16790558.7A Active EP3368247B1 (fr) 2015-10-28 2016-10-28 Procédé de fabrication de non-tissé abrasif

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16790558.7A Active EP3368247B1 (fr) 2015-10-28 2016-10-28 Procédé de fabrication de non-tissé abrasif

Country Status (7)

Country Link
US (1) US10843309B2 (fr)
EP (2) EP3162502A1 (fr)
KR (1) KR20180075578A (fr)
CN (1) CN108290275A (fr)
BR (1) BR112018008664A2 (fr)
FI (1) FI3368247T3 (fr)
WO (1) WO2017072293A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019207822A1 (de) * 2019-05-28 2020-12-03 Robert Bosch Gmbh Verfahren zur Herstellung eines Schleifartikels sowie Schleifartikel
MX2022010370A (es) 2020-02-28 2022-11-08 Wendt Poliertechnik Gmbh & Co Kg Herramienta para pulir.
DE102020001283A1 (de) 2020-02-28 2021-09-02 Wendt Poliertechnik Gmbh & Co. Kg Polierwerkzeug
DE202020000786U1 (de) 2020-02-28 2021-05-31 Wendt Poliertechnik Gmbh & Co. Kg Polierwerkzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2102786A1 (en) * 1971-01-21 1972-08-03 Hermann Behr & Sohn, 7121 Großingersheim Abrasive coated nylon brush bristles - for finishing car bodies
US3817004A (en) * 1972-05-01 1974-06-18 T Moss Scrubbing or buffing device impregnated with abrasive and method of making same
US4227350A (en) * 1977-11-02 1980-10-14 Minnesota Mining And Manufacturing Company Low-density abrasive product and method of making the same
US5811186A (en) * 1995-05-25 1998-09-22 Minnesota Mining And Manufacturing, Inc. Undrawn, tough, durably melt-bonded, macrodenier, thermoplastic, multicomponent filaments
EP0912294B1 (fr) 1996-05-03 2003-04-16 Minnesota Mining And Manufacturing Company Articles abrasifs en non-tisse
US20140259960A1 (en) * 2013-03-15 2014-09-18 Martin J. Rotter Nonwoven pads

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US2375585A (en) * 1943-05-14 1945-05-08 James H Rhodes & Company Plastic abrasive pad
DE1694594C3 (de) * 1960-01-11 1975-05-28 Minnesota Mining And Manufacturing Co., Saint Paul, Minn. (V.St.A.) Reinigungs- und Polierkörper
US3016294A (en) * 1959-04-21 1962-01-09 Norton Co Abrasive product
US3020139A (en) * 1960-04-18 1962-02-06 Norton Co Abrasive product
US3324609A (en) * 1964-08-11 1967-06-13 Norton Co Non-woven webs
US3401491A (en) * 1965-03-25 1968-09-17 Armour & Co Binder of an epoxy resin, polyamide resin and polyester for fibrous abrasive articles
US5549962A (en) * 1993-06-30 1996-08-27 Minnesota Mining And Manufacturing Company Precisely shaped particles and method of making the same
DE19522763A1 (de) * 1995-06-27 1997-01-02 Fleissner Maschf Gmbh Co Verfahren und Vorrichtung zur Verfestigung eines Faservlieses
CN1085575C (zh) * 1996-09-11 2002-05-29 美国3M公司 磨料制品及其制造方法
US7985269B2 (en) * 2006-12-04 2011-07-26 3M Innovative Properties Company Nonwoven abrasive articles and methods of making the same
DE102007008889A1 (de) * 2007-02-21 2008-08-28 Tesa Ag Verfahren zur Erzeugung von nano- und/oder mikrostrukturierten Oberflächen in einer klebenden, insbesondere selbstklebenden Schicht
JP2018506415A (ja) * 2015-02-27 2018-03-08 スリーエム イノベイティブ プロパティズ カンパニー 多目的消費者用擦り布及びその作製方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2102786A1 (en) * 1971-01-21 1972-08-03 Hermann Behr & Sohn, 7121 Großingersheim Abrasive coated nylon brush bristles - for finishing car bodies
US3817004A (en) * 1972-05-01 1974-06-18 T Moss Scrubbing or buffing device impregnated with abrasive and method of making same
US4227350A (en) * 1977-11-02 1980-10-14 Minnesota Mining And Manufacturing Company Low-density abrasive product and method of making the same
US5811186A (en) * 1995-05-25 1998-09-22 Minnesota Mining And Manufacturing, Inc. Undrawn, tough, durably melt-bonded, macrodenier, thermoplastic, multicomponent filaments
EP0912294B1 (fr) 1996-05-03 2003-04-16 Minnesota Mining And Manufacturing Company Articles abrasifs en non-tisse
US20140259960A1 (en) * 2013-03-15 2014-09-18 Martin J. Rotter Nonwoven pads

Also Published As

Publication number Publication date
US10843309B2 (en) 2020-11-24
EP3368247A1 (fr) 2018-09-05
BR112018008664A2 (pt) 2018-10-30
KR20180075578A (ko) 2018-07-04
FI3368247T3 (en) 2023-08-08
CN108290275A (zh) 2018-07-17
US20180326556A1 (en) 2018-11-15
WO2017072293A1 (fr) 2017-05-04
EP3368247B1 (fr) 2023-06-28

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