EP3578297B1 - Dispositif et procédé pour production d'une surface mate - Google Patents

Dispositif et procédé pour production d'une surface mate Download PDF

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Publication number
EP3578297B1
EP3578297B1 EP18175773.3A EP18175773A EP3578297B1 EP 3578297 B1 EP3578297 B1 EP 3578297B1 EP 18175773 A EP18175773 A EP 18175773A EP 3578297 B1 EP3578297 B1 EP 3578297B1
Authority
EP
European Patent Office
Prior art keywords
jet
matt
abrasive
blasting
made matt
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.)
Active
Application number
EP18175773.3A
Other languages
German (de)
English (en)
Other versions
EP3578297A1 (fr
Inventor
Erhard Brandl
Marco Karig
Maurice Langer
Thomas Kuntze
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.)
Audi AG
Original Assignee
Audi 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 Audi AG filed Critical Audi AG
Priority to EP18175773.3A priority Critical patent/EP3578297B1/fr
Priority to PCT/EP2019/063913 priority patent/WO2019233839A1/fr
Priority to CN201980031167.5A priority patent/CN112105483B/zh
Publication of EP3578297A1 publication Critical patent/EP3578297A1/fr
Application granted granted Critical
Publication of EP3578297B1 publication Critical patent/EP3578297B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
    • B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B24C5/04—Nozzles therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
    • B24C9/003—Removing abrasive powder out of the blasting machine

Definitions

  • the invention relates to a device for matting a surface according to the preamble of patent claim 1. Furthermore, the invention relates to a method for matting a surface with such a device.
  • Devices for matting glossy surfaces of a vehicle and / or a vehicle component are known in numerous variations. These known devices for matting painted surfaces have roughly cuboid jet nozzles or jet chambers. Here, a jet of blasting media is directed approximately perpendicularly or at an angle well over 60 ° onto the surface to be irradiated. A flat matting of the surface is achieved by a relative movement between the workpiece and the nozzle.
  • a method for processing a glossy surface of a vehicle and / or a vehicle component which is coated with a clearcoat layer of a given first layer thickness.
  • a blasting agent is metered into a carrier air flow generated by negative pressure, conveyed in a hose line system to a jet lance and directed onto a processing surface placed under negative pressure by a blasting chamber, from there returned to the air flow, cleaned and, if necessary, circulated.
  • the acceleration of the blasting medium is generated by the negative pressure and the blasting chamber is shifted on the processing surface, with at least one additional energy pulse being fed to the blasting medium by at least one further gas flow sucked in by the negative pressure and at least under atmospheric pressure Achieving a final speed well above the flow speed of the carrier air flow upstream of a metering point is issued.
  • an energy input into the processing surface is set depending on the parameters type and shape of the processing surface and the blasting agent, degree of loading of the carrier air flow with blasting agent, negative pressure in the carrier air flow, blasting time and blasting temperature, so that about 1 to 50 percent of the given first layer thickness of the clearcoat layer is removed is, whereby the surface of the vehicle and / or the vehicle component is matted and a reduced second layer thickness of the clearcoat layer is formed.
  • a generic device for matting surfaces is described.
  • the long duration of the matting process for larger surfaces to be matted can be viewed as disadvantageous in the known device and method for matting a surface, since the area performance of matting results from the relative speed between workpiece and nozzle or blasting chamber.
  • a device for blasting calendar roller surfaces which has a hood, one side of which is open and contoured is to come into engagement with the roller and the other side of which is longitudinally slotted, a jet nozzle extending through the slot and directed towards the roller, an abrasive supply line connected to the nozzle, a vacuum line connected to the hood and comprises means for reciprocating the nozzle in the slot.
  • the device comprises a centrifugal blasting head for blasting larger surfaces with abrasive particles conveyed in an air stream.
  • the centrifugal blast head comprises a manually guided blasting chamber to be placed on the surface to be blasted, with a blasting chamber opening which is enclosed by an edge part which can be placed on the surface to be blasted, and with a transparent chamber wall area, a blasting nozzle opening into the blasting chamber and directed towards the blasting chamber opening, and a The outlet nozzle arranged in the blasting chamber for discharging conveying air and used blasting media particles.
  • the jet nozzle is arranged at an acute angle to the plane of the jet chamber opening and essentially to the side of the same on the jet chamber.
  • the outlet connection is arranged essentially opposite the blasting nozzle on the blasting chamber, and the transparent chamber wall area is designed as a viewing window opposite the blasting chamber opening.
  • the invention is based on the object of providing a device and a method for matting a surface which enable a higher area performance of matting.
  • the workpiece and nozzle remain rigid to one another during the irradiation process, with a direction of a jet of abrasive material within a blasting chamber approximately parallel to or at an angle less than 30 ° to the interaction opening and the surface to be matted can be aligned.
  • the direction of the jet of abrasive material is reversed.
  • a device for matting a surface is understood below to mean an assembly with a nozzle which has the blasting chamber for irradiating a workpiece with an abrasive radiation material.
  • the blasting chamber has at least one flat interaction opening on at least one of its sides, which is intended to be positively placed on at least one surface to be matted, so that the blasting chamber is thereby closed.
  • a method for matting a surface with such a device comprises the following steps: providing a workpiece with a surface to be matted, placing the device with its flat interaction opening on the area of the surface to be matted, and irradiating the surface with a jet of abrasive material in a first jet direction.
  • the jet of abrasive material is aligned approximately parallel to or at an angle of less than 30 ° to the interaction opening and the surface to be matted.
  • the surface is then irradiated with a jet of abrasive material in a second jet direction, which runs approximately in the opposite direction to the first jet direction.
  • the alternating irradiation of the surface with the jet of abrasive material can be repeated until a desired degree of matting of the surface to be matted is reached.
  • Embodiments of the invention enable a significantly higher surface output with otherwise the same beam parameters by means of "planar blasting". This means that the entire surface to be matted is blasted at the same time, whereby the blasting material can hit the workpiece several times. Since the workpiece and the nozzle remain rigid to one another during the irradiation process, and the area performance of matting is determined by the relative speed between the workpiece and the particles of the abrasive material and not by the relative speed between the workpiece and the blasting chamber or nozzle, the result is a much higher one Area performance than with the methods and devices known from the prior art. For example, broken glass or particles of glass with a size of 150 ⁇ m, for example, can be used as radiation means. By specifying the irradiation time, particle size, particle speed, material, etc., various matting effects can be achieved.
  • the surface to be matted is roughened in the form of grooves, so that no craters result, as is the case with a jet of blasting medium oriented at an angle steeper than 60 °.
  • the grooved roughening of the surface results in a more homogeneous matting at the micro level than with the blasting media jet that is oriented at a steeper angle than 60 °.
  • the matted surfaces produced are equally homogeneous.
  • aggressive media can run off or flow off better thanks to the groove-shaped structure. Overall, there is advantageously a higher chemical resistance of the matting produced.
  • a relative speed between the particles of the abrasive material of the blasting medium jet can be used and determine an area performance of the irradiation process for the surface to be matted.
  • a negative pressure generated in the blasting chamber can connect the at least one interaction opening to the at least one surface to be matted in a fluid-tight manner.
  • a good connection between the at least one surface to be matted and the blasting chamber can be established in a simple manner by the negative pressure generated.
  • the safety of the method can be increased by preventing the blasting process from starting if the workpiece is not correctly connected to the nozzle and no negative pressure can be generated in the blasting chamber.
  • the blasting chamber can have at least one interaction opening at least on an upper side and on a lower side, each of which can be covered by a surface to be matted.
  • the irradiation can be carried out with a high degree of effectiveness and without wear to a wall of the blasting chamber or blasting nozzle.
  • several interaction openings can be formed on the at least one side of the blasting chamber, each of which can be covered by a surface to be matted. This means that several small surfaces or workpieces can be matted at the same time.
  • a nozzle contour which encloses the at least one interaction opening can be designed as a fixed support frame with a seal on which the workpiece with the surface to be matted rests.
  • the nozzle contour can be designed as a flexible edge with a seal, which adapts to a contour of the workpiece in the area of the surface to be matted.
  • the surface to be matted can be masked from abrasive material before the blasting with the blasting medium jet in order to cover areas not to be matted.
  • the surface to be matted can be masked by means of a printing process or a film application.
  • the surface to be matted is preferably masked by applying a film.
  • the surfaces to be matted are preferably masked by means of a printing process.
  • Environmentally friendly, water-soluble peelable lacquer is preferably printed onto the surface to be matted as a mask. This masking can advantageously be washed off the matted surface in an environmentally friendly manner with water without chemical additives or with water with light chemical additives.
  • the illustrated embodiments of the device 1, 1A, 1B according to the invention for matting a surface 12 each include a nozzle 3, 3A, 3B, which has a blasting chamber 4, 4A, 4B for irradiating a workpiece 10, 10A, 10B with an abrasive blasting material having.
  • the blasting chamber 4, 4A, 4B has at least one flat interaction opening 5.2 on at least one of its sides, which is intended to be positively placed on at least one surface 12 to be matted, so that the blasting chamber 4, 4A, 4B is thereby closed.
  • the workpiece and the nozzle remain rigid to one another during the irradiation process, whereby a direction of a blasting medium jet 9 made of abrasive material within the blasting chamber 4, 4A, 4B can be aligned approximately parallel to or at an angle of less than 30 ° to the interaction opening 5.2 and the surface 12 to be matted is.
  • a relative speed between the particles 8 of the abrasive material of the blasting medium jet 9 and the surface 12 to be matted determines an area performance of the irradiation process.
  • the device 1, 1A, 1B for matting a surface each comprises two blasting media connections 7, 7A, 7B, of which, depending on the blasting direction, a first blasting media connection 7, 7A, 7B as a feed 7.1 and a second blasting media connection 7, 7A , 7B acts as discharge 7.2.
  • a transition area 6, 6A, 6B arranged.
  • a first transition area 6, 6A, 6B acts as a distributor 6.1 for the planar blasting medium jet 9 and a second transition area 6, 6A, 6B acts as a collector 6.2.
  • the blasting agent connections 7, 7A, 7B can be connected to a hose and / or pipe system (not shown).
  • a negative pressure is generated in the blasting chamber 4, 4A, 4B, which connects the interaction opening 5.2 in a fluid-tight manner to the surface 12 to be matted.
  • the direction of the blasting medium jet 9 made of abrasive material is reversed.
  • a nozzle contour 5, which encloses the interaction opening 5.2 is designed in the illustrated first exemplary embodiment as a fixed support frame 5A with a seal 5.1.
  • the workpiece 10A rests on this support frame 5A and the seal 5.1, so that the surface 12 to be matted covers the interaction opening 5.2.
  • the shape and dimensions of the support frame 5A and the seal can be adapted to the shape and dimensions of the workpiece 10A.
  • the workpiece 10A corresponds to an interior trim part.
  • the single interaction opening 5.2 of the blasting chamber 4A is arranged on its upper side. An underside of the blasting chamber 4A is covered by a wall, not designated.
  • a second interaction opening 5.2 can be formed on the underside of the blasting chamber 4A, which can be covered by a further surface 12 to be matted in order to close the blasting chamber 4A.
  • a plurality of interaction openings 5.2 are formed on at least one side of the blasting chamber 4A, each of which can be covered by a surface 12 to be matted.
  • the nozzle contour 5, which surrounds the interaction opening 5.2, is designed in the illustrated second exemplary embodiment as a flexible edge 5B with a seal 5.1.
  • the flexible edge 5B and the seal 5.1 adapt to a contour of the workpiece 10B in the area of the surface 12 to be matted.
  • the workpiece 10B corresponds to a rocker on which an area is to be matted.
  • the inventive method for matting a surface 12 with the device 1, 1A, 1B described above comprises the following steps: providing a workpiece 10, 10A, 10B with a surface 12 to be matted, placing the device 1, 1A, 1B with its flat interaction opening 5.2 onto the area of the surface 12 to be matted, and irradiating the surface 12 with a jet of abrasive material 9 made of abrasive material in a first jet direction.
  • the blasting medium jet 9 made of abrasive material is oriented approximately parallel to or at an angle of less than 30 ° to the interaction opening 5.2 and to the matting surface 12.
  • the relative speed between the particles 8 of the abrasive material of the blasting medium jet 9 and the surface 12 to be matted determines a surface output of the irradiation process.
  • the surface 12 to be matted is also irradiated with a blasting medium jet 9 made of abrasive material in a second jet direction, the second jet direction running approximately in the opposite direction to the first jet direction.
  • the alternating irradiation of the surface 12 with the blasting medium jet 9 made of abrasive material is repeated in the illustrated embodiment until a desired degree of matting of the surface 12 to be matted is reached.
  • the surface 12 to be matted can be masked before the irradiation in order to cover areas not to be matted.
  • the surface 12 of the workpieces 10, 10A, 10B to be matted can be used automatically for series parts by means of a printing process masked.
  • the surface 12 to be matted can be masked individually by applying a film.
  • Environmentally friendly, water-soluble peelable lacquer is preferably printed onto the surface 12 to be matted as a mask. This masking can advantageously be washed off or removed from the matted surface 12 in an environmentally friendly manner with water without chemical additives or with water with slight chemical additives.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Claims (12)

  1. Dispositif (1, 1A, 1B) pour le matage d'une surface (12), avec une buse (3, 3A, 3B), laquelle présente une chambre de grenaillage (4, 4A, 4B) pour le grenaillage d'une pièce (10, 10A, 10B) avec un matériau de grenaillage, dans lequel la chambre de grenaillage (4, 4A, 4B) présente sur au moins un de ses côtés au moins une ouverture d'interaction plate (5.2), laquelle est prévue pour être placée par complémentarité de forme sur au moins une surface (12) à matifier, de sorte que la chambre de grenaillage (4, 4A, 4B) est ainsi fermée,
    dans lequel la pièce (10, 10A, 10B) et la buse (3, 3A, 3B) restent rigides l'une par rapport à l'autre pendant le processus de grenaillage, dans lequel une direction d'un jet de grenaillage (9) de matériau abrasif à l'intérieur de la chambre de grenaillage (4, 4A, 4B) peut être alignée approximativement parallèlement ou selon un angle inférieur à 30° par rapport à l'ouverture d'interaction (5.2) et à la surface (12) à matifier,
    caractérisé en ce que
    la direction de jet du jet de grenaillage (9) de matériau abrasif est réversible.
  2. Dispositif (1, 1A, 1B) selon la revendication 1, caractérisé en ce qu'une vitesse relative entre les particules (8) du matériau abrasif du jet de grenaillage (9) et la surface (12) à matifier détermine un rendement surfacique du processus de grenaillage.
  3. Dispositif (1, 1A, 1B) selon la revendication 1 ou 2, caractérisé en ce qu'une dépression générée dans la chambre de grenaillage (4, 4A, 4B) connecte de manière étanche aux fluides l'au moins une ouverture d'interaction (5.2) à l'au moins une surface (12) à matifier.
  4. Dispositif (1, 1A, 1B) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la chambre de grenaillage (4, 4A, 4B) présente au moins une ouverture d'interaction (5.2) au moins sur un côté supérieur et sur un côté inférieur, lesquelles peuvent respectivement être recouvertes par une surface (12) à matifier.
  5. Dispositif (1, 1A, 1B) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la chambre de grenaillage (4, 4A, 4B) présente sur au moins un côté plusieurs ouvertures d'interaction (5.2), lesquelles sont respectivement recouvertes par une surface (12) à matifier.
  6. Dispositif (1, 1A, 1B) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un contour de buse (5), lequel entoure l'au moins une ouverture d'interaction (5.2), est réalisé en tant que cadre de support fixe (5A) avec un joint (5.1), sur lequel la pièce (10, 10A) repose avec la surface (12) à matifier.
  7. Dispositif (1, 1A, 1B) selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un contour de buse (5), lequel entoure l'au moins une ouverture d'interaction (5.2), est réalisé en tant que bord flexible (5B) avec un joint (5.1), qui s'adapte à un contour de la pièce (10, 10B) au niveau de la surface (12) à matifier.
  8. Procédé de matage d'une surface (12) avec un dispositif (1, 1A, 1B), lequel est réalisé selon l'une quelconque des revendications 1 à 7, avec les étapes suivantes :
    fourniture d'une pièce (10, 10A, 10B) avec une surface (12) à matifier,
    placement du dispositif (1, 1A, 1B) avec son ouverture d'interaction plate (5.2) sur la zone de la surface (12) à matifier,
    grenaillage de la surface (12) avec un jet de grenaillage (9) de matériau abrasif dans une première direction de jet, dans lequel le jet de grenaillage (9) de matériau abrasif est aligné approximativement parallèlement ou à un angle inférieur à 30° par rapport à l'ouverture d'interaction (5.2) et à la surface (12) à matifier,
    dans lequel le grenaillage de la surface (12) avec le jet de grenaillage (9) de matériau abrasif est ensuite effectué dans une seconde direction de jet, dans lequel la seconde direction de jet est approximativement opposée à la première direction de jet.
  9. Procédé selon la revendication 8, caractérisé en ce que le grenaillage alterné de la surface (12) avec le jet de grenaillage (9) de matériau abrasif est répété jusqu'à ce qu'un degré souhaité de matage de la surface (12) à matifier soit atteint.
  10. Procédé selon la revendication 8 ou 9, caractérisé en ce que la surface (12) à matifier est masquée avant le grenaillage avec le jet de grenaillage (9) de matériau abrasif afin de recouvrir les zones à ne pas matifier.
  11. Procédé selon la revendication 10, caractérisé en ce que la surface (12) à matifier est masquée au moyen d'un procédé d'impression ou d'une application de film.
  12. Procédé selon la revendication 10, caractérisé en ce qu'une laque pelable soluble dans l'eau est imprimée en tant que masquage sur la surface (12) à matifier.
EP18175773.3A 2018-06-04 2018-06-04 Dispositif et procédé pour production d'une surface mate Active EP3578297B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18175773.3A EP3578297B1 (fr) 2018-06-04 2018-06-04 Dispositif et procédé pour production d'une surface mate
PCT/EP2019/063913 WO2019233839A1 (fr) 2018-06-04 2019-05-29 Dispositif et procédé de matage d'une surface
CN201980031167.5A CN112105483B (zh) 2018-06-04 2019-05-29 用于为表面消光的装置以及方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18175773.3A EP3578297B1 (fr) 2018-06-04 2018-06-04 Dispositif et procédé pour production d'une surface mate

Publications (2)

Publication Number Publication Date
EP3578297A1 EP3578297A1 (fr) 2019-12-11
EP3578297B1 true EP3578297B1 (fr) 2021-12-22

Family

ID=62528339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18175773.3A Active EP3578297B1 (fr) 2018-06-04 2018-06-04 Dispositif et procédé pour production d'une surface mate

Country Status (3)

Country Link
EP (1) EP3578297B1 (fr)
CN (1) CN112105483B (fr)
WO (1) WO2019233839A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020122129B3 (de) 2020-08-25 2022-02-17 Audi Aktiengesellschaft Strahlvorrichtung und Verfahren zum Mattieren einer Oberfläche
DE102020124668B3 (de) 2020-09-22 2022-02-17 Audi Aktiengesellschaft Vorrichtung und Verfahren zum Bearbeiten einer Oberfläche

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB681524A (en) * 1950-09-02 1952-10-22 Wingfoot Corp Apparatus for the treatment of calender rolls of a calender for sheeting plastic material into film
GB1480959A (en) * 1975-11-10 1977-07-27 Heath Ltd I Blasting apparatus
DE8809115U1 (de) * 1988-07-15 1988-09-01 Mick, Alexandra, 8891 Obergriesbach Schleuderstrahlkopf zum Abstrahlen größerer Oberflächen mit in einem Luftstrom geförderten Strahlmittelteilchen
JPH10560A (ja) * 1996-06-07 1998-01-06 Sadayoshi Kawai ブラスト加工装置
AU4198597A (en) * 1996-08-16 1998-03-06 Rene Loeb Device for the sandblasting of plate shaped work pieces
US7021994B2 (en) * 2003-11-05 2006-04-04 General Electric Company Method and apparatus for metalworking using a coolant fluid
JP5291307B2 (ja) * 2007-08-03 2013-09-18 株式会社不二製作所 スクリーン印刷用メタルマスクの製造方法
DE102010009933B3 (de) * 2010-03-02 2011-05-12 Wiwox Gmbh Surface Systems Verfahren und Vorrichtung zur Oberflächenbehandlung
JP5746901B2 (ja) * 2011-04-14 2015-07-08 株式会社不二製作所 研磨方法及びブラスト加工装置のノズル構造
JP5793014B2 (ja) * 2011-07-21 2015-10-14 株式会社不二製作所 硬質脆性材料基板の側部研磨方法
JP5782338B2 (ja) * 2011-09-01 2015-09-24 株式会社不二製作所 板材の端部処理方法及びブラスト加工装置
JP6594702B2 (ja) * 2015-08-21 2019-10-23 株式会社不二製作所 金属製品に対する模様の形成方法及び模様付き金属製品
DE102015013167B4 (de) 2015-10-09 2018-05-03 Audi Ag Verfahren zum Bearbeiten von glänzenden Lackoberflächen

Also Published As

Publication number Publication date
EP3578297A1 (fr) 2019-12-11
WO2019233839A1 (fr) 2019-12-12
CN112105483A (zh) 2020-12-18
CN112105483B (zh) 2022-05-27

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