EP1080793A2 - Kammer zur elektrostatischen Beflockung und Beschichtung - Google Patents

Kammer zur elektrostatischen Beflockung und Beschichtung Download PDF

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Publication number
EP1080793A2
EP1080793A2 EP00306825A EP00306825A EP1080793A2 EP 1080793 A2 EP1080793 A2 EP 1080793A2 EP 00306825 A EP00306825 A EP 00306825A EP 00306825 A EP00306825 A EP 00306825A EP 1080793 A2 EP1080793 A2 EP 1080793A2
Authority
EP
European Patent Office
Prior art keywords
electrostatic
workpiece
flat plate
electrically grounded
electrode
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.)
Ceased
Application number
EP00306825A
Other languages
English (en)
French (fr)
Other versions
EP1080793A3 (de
Inventor
Masaaki Abe
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.)
Sumitomo Corp
Mesac Corp
Original Assignee
Sumitomo Corp
Mesac Corp
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 Sumitomo Corp, Mesac Corp filed Critical Sumitomo Corp
Publication of EP1080793A2 publication Critical patent/EP1080793A2/de
Publication of EP1080793A3 publication Critical patent/EP1080793A3/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/001—Flocking
    • B05C19/002—Electrostatic flocking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects

Definitions

  • the present invention relates to an electrostatic processing chamber for performing an electrostatic flocking operation and an electrostatic coating operation, wherein a strip-like elongated workpiece assuming a flat plate shape is subjected to an electrostatic flocking operation and an electrostatic coating operation in the electrostatic processing chamber.
  • an electrostatic processing operation such as an electrostatic flocking operation, electrostatic coating operation and the like is performed in a condition in which: a strip-like elongated flat plate having wound into a roll is unwound to longitudinally extend; and, the thus unwound and extended flat plate (including sheets of paper, textile fabrics, not limited only to metal sheets) is electrically grounded to serves as a workpiece to be flocked and coated when passed through an electrostatic flocking chamber and an electrostatic coating chamber in a condition in which the flat plate is spaced apart form a electrostatically charged element, a problem arises in the electrostatic flocking and the electrostatic coating operation, which result in a poorly flocked product and a poorly coated product, respectively.
  • electrostatic processing operation such as an electrostatic flocking operation, electrostatic coating operation and the like is performed in a condition in which: a strip-like elongated flat plate having wound into a roll is unwound to longitudinally extend; and, the thus unwound and extended flat plate (including sheets of paper, textile
  • each of the poorly flocked product and the poorly coated product the opposite longitudinal side areas adjacent to each of longitudinal corner edge portions of these products are small in flock density and in paint density.
  • each of the longitudinal corner edge portions itself are large in flock density and in paint density.
  • Applicant is a company, which was established on September 16, 1979. Since this company's establishment, development in technology relating to the electrostatic flocking process and the electrostatic coating process is proceeding so that a considerable amount of technological experience has been obtained by the company (i.e., Applicant). However, the company or Applicant does not know in the art any electrostatic flocking chamber having a construction or means for effectively preventing the above phenomenon from occurring.
  • the electrode to which a high voltage electrostatic energy is applied wherein the workpiece to be electrostatically processed is electrically grounded and oppositely disposed from the electrode in the interior of the electrostatic processing chamber.
  • the high voltage electrostatic energy is applied to the electrode to cause an electric discharge oriented toward the workpiece, so that: by using the electric lines of force issued from the electrode to the workpiedce in the electrostatic field created between the electrode and the workpiece, fine objects floating between the electrode and the workpiece in the interior of the electrostatic processing chamber are electrically charged; and, the thus charged fine objects are driven to fly toward the workpiece.
  • This is the basic principles of the electrostatic processing operations such as the electrostatic flocking operation and the electrostatic coating operation.
  • a remarkable difference between the electrostatic flocking technology and the electrostatic coating technology resides in that: in the technology relating to the electrostatic flocking operation, the fine objects floating in the electrostatic processing chamber are short fibers which are electrically conductive; the workpiece to be electrostatically processed is an electrically grounded object coated with an adhesive layer formed of an adhesive which is still not dried; and, the electrostatic flocking operation of the workpiece is performed in a manner such that: the short fibers are electrically charged when the electrostatic field is created between the electrode and the workpiece; and, by using the electric lines of force formed in the electrostatic field, the short fibers are driven to fly toward the adhesive layer of the workpiece, and thereby having their front end portions stuck into the adhesive layer of the workpiece, whereby the electrostatic flocking operation is completed, wherein: an air flow may be produced in a manner such that the air flows from the electrode to the workpiece; or, any air flow does not exist between the electrode and the workpiece.
  • the above-mentioned fine objects floating in the interior of the electrostatic processing chamber are constructed of a fine coating powder or liquid provided with insulation properties;
  • the workpiece to be electrostatically processed is an electrically grounded object still not coated with any adhesive layer; and, by using the electric lines of force in the electrostatic field created between the electrode and the workpiece, the electrostatic coating operation is performed in a manner such that: the coating powder or liquid is electrically charged; an air flow is formed between the electrode and the workpiece so as to have the air flow from the electrode toward the workpiece; and, due to a synergistic effect between the electrostatic field and the air flow, the coating powder or liquid is driven to fly toward the surface of the workpiece, so that the coating powder or liquid is attracted to the surface of the workpiece under the effect of the electrostatic charge of the coating powder or liquid.
  • the electrode is disposed; and, oppositely disposed from this electrode is the workpiece having been electrically grounded. Due to the above construction, the electrostatic field is created between the workpiece and the electrode, so that the electric lines of force extend from the electrode to the workpiece.
  • the above object of the present invention is accomplished by providing:
  • An electrostatic processing chamber for forming an electrostatic flocking apparatus to perform an electrostatic flocking operation, wherein a strip-like elongated flat plate serving as a workpiece coated with an adhesive layer and electrically grounded is oppositely disposed from an electrode and transferred in a condition in which short fibers having been electrically charged are electrostatically implanted in the flat plate, characterized in that: electrically grounded elongated elements are disposed in opposite longitudinal side areas of the flat plate to extend in parallel with a longitudinal direction of the flat plate in a passage of the strip-line elongated flat plate being flocked.
  • the above object of the present invention is accomplished by providing:
  • An electrostatic processing chamber for forming an electrostatic coating apparatus to perform an electrostatic coating operation wherein a strip-like elongated flat plate serving as a workpiece electrically grounded is oppositely disposed from an electrode and transferred in a condition in which the workpiece is subjected to an electrostatic coating operation, characterized in that: electrically grounded elongated elements are disposed in opposite longitudinal side areas of the workpiece to extend in parallel with a longitudinal direction of the flat workpiece in a passage of the strip-like elongated flat plate being coated.
  • the basic technical idea of the present invention has resulted in the provision of a suitable means for preventing the electric lines of force from concentrating in each of longitudinal corner edge portions of the workpiece.
  • a suitable means for preventing the electric lines of force from concentrating in each of longitudinal corner edge portions of the workpiece is capable of solving the following problem, which will be now described in detail: namely, when an electrostatic processing operation such as an electrostatic flocking operation, electrostatic coating operation and the like is performed in a condition in which: a strip-like elongated flat plate having wound into a roll is unwound to longitudinally extend; and, the thus unwound and extended flat plate (hereinafter referred to as the workpiece 2) is electrically grounded so as to be flocked and coated when passed through an electrostatic flocking chamber and an electrostatic coating chamber, the problem arises in the electrostatic flocking and the electrostatic coating operation, which result in a poorly flocked product and a poorly coated product, respectively, wherein: the opposite longitudinal side areas adjacent to each of longitudinal corner edge portions of
  • an electrode 1 is disposed inside the housing (not shown); oppositely disposed from the electrode 1 is the workpiece 2 which is constructed of the strip-like elongated flat plate and transferred in the interior of the housing; and, a plurality of electrically grounded elongated elements 5 are disposed in opposite longitudinal side areas of the workpiece 2 to extend in parallel with a longitudinal direction of said the workpiece 2 in a passage of the workpiece 2 being electrostatically processed, wherein each of the grounded elements 5 is slightly spaced apart from the workpiece 2.
  • each of the electrically grounded elongated elements 5 in the housing by using the same mounting means as that used in mounting an electrically grounded shelf (which supports the workpiece thereon) in the housing. Consequently, no special provision of means for supporting the elongated elements 5 is required in the present invention.
  • the electrostatic flocking operation is performed in a condition in which: the electrically grounded elongated elements 5 are mounted along the passage of the workpiece 2 in the housing; the workpiece 2 is transferred through the passage; and, flock or short fibers 4 are electrostatically charged to float in the housing as is in the conventional ordinary operation.
  • the workpiece 2 is electrically grounded and transferred in the housing in a condition in which the workpiece 3 has its adhesive-layer formation surface 3 oppositely disposed from the electrode 1, wherein: an adhesive layer is formed on the adhesive-layer formation surface 3 of the workpiece 2; and, a high voltage higher than that used in the conventional ordinary process is applied to the electrode 1.
  • an electrostatic field is created between the electrode 1, workpiece 2 and the elongated elements 5.
  • the electric lines of force in this electrostatic field extend to the adhesive-layer formation surface 3 of the workpiece 2.
  • the short fibers 4 charged inside the housing are electrostatically driven to fly toward the adhesive-layer formation surface 3 of the workpiece 2 and also toward the elongated elements 5, so that the short fibers 4 reached the adhesive-layer formation surface 3 of the workpiece 2 have their front end portions stuck in the adhesive-layer formation surface 3, whereby the workpiece 2 is electrostatically flocked.
  • the short fibers 4 flying toward the elongated elements 5 fail to have their front end portions stuck in the elongated elements 5 since the elongated elements 5 are not coated with any adhesive layers.
  • the electric lines of force appearing in the electrostatic field created between the electrode 1 and the adhesive-layer formation surface 3 of the grounded workpiece 2 substantially uniformly extend also to the opposite longitudinal side areas adjacent to each of the longitudinal corner edge portions of the workpiece 2, without concentrating only in the longitudinal corner edge portions of the workpiece 2.
  • the workpiece to be electrostatically flocked has been described in the above with reference to the example, substantially the same phenomenon that is observed in the above maybe observed also in the electrostatic coating operation, provided that the electrostatic coating operation is different from the electrostatic flocking operation in that: the workpiece used in the electrostatc coating operation is not covered with the adhesive layer; and, the fine objects to be applied to the workpiece are coating materials in the electrostatic coating operation.
  • the present invention is applicable not only to the up-type electrostatic flocking chamber, but also to a down-type electrostatic flocking chamber, a side-type electrostatic flocking chamber, and the like.
  • the present invention it is possible to uniformly flock the workpiece through the electrostatic flocking operation by the provision of the electrically grounded elongated elements disposed adjacent to the opposite longitudinal side areas of the workpiece, wherein the workpiece is oppositely disposed from the electrode.

Landscapes

  • Electrostatic Spraying Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP00306825A 1999-08-12 2000-08-10 Kammer zur elektrostatischen Beflockung und Beschichtung Ceased EP1080793A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22836799A JP3817393B2 (ja) 1999-08-12 1999-08-12 静電植毛並に静電塗装を施す静電加工室
JP22836799 1999-08-12

Publications (2)

Publication Number Publication Date
EP1080793A2 true EP1080793A2 (de) 2001-03-07
EP1080793A3 EP1080793A3 (de) 2004-07-07

Family

ID=16875361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00306825A Ceased EP1080793A3 (de) 1999-08-12 2000-08-10 Kammer zur elektrostatischen Beflockung und Beschichtung

Country Status (6)

Country Link
EP (1) EP1080793A3 (de)
JP (1) JP3817393B2 (de)
KR (1) KR20010050047A (de)
CA (1) CA2315467A1 (de)
SG (1) SG89343A1 (de)
TW (1) TW464711B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003202521B2 (en) * 2002-04-05 2008-03-13 Howmedica Osteonics Corp. Apparatus for fusing adjacent bone structures

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100477600B1 (ko) * 2001-03-26 2005-03-18 엘지전자 주식회사 선택적 반전 어드레스 방식을 이용한 플라즈마 디스플레이패널의 구동방법
US7922321B2 (en) 2003-10-09 2011-04-12 Ipventure, Inc. Eyewear supporting after-market electrical components
KR101487766B1 (ko) * 2011-12-26 2015-01-29 김기흥 미끄럼방지를 위한 식모장갑 제조방법
WO2020177052A1 (zh) * 2019-03-04 2020-09-10 深圳创怡兴实业有限公司 植绒治具、植绒系统以及植绒方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1357048A (fr) * 1963-02-20 1964-04-03 Sames Mach Electrostat Perfectionnements au recouvrement d'objets à bords vifs
ES8502175A1 (es) * 1979-11-29 1980-07-16 Flokados Especiales S A Mejoras introducidas en el flocado electrostatico de hilos
DD237121A1 (de) * 1985-05-10 1986-07-02 Karl Marx Stadt Tech Hochschul Einrichtung zum mustergemaessen gestalten elektrostatisch beflockter oberflaechen
GB2195924B (en) * 1986-07-28 1991-01-09 Mesac Corp Electrostatic flocking apparatus
KR0144511B1 (ko) * 1994-06-30 1998-07-15 우에시마 세이스케 하부층이 비치지 않도록 하기 위해서 두꺼운 수지막으로 보드를 마무리처리하는 방법
DE19544530C1 (de) * 1995-11-29 1997-08-28 Wagner Int Vorrichtung zum elektrostatischen Pulverbeschichten der Vorderseite eines Bandes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003202521B2 (en) * 2002-04-05 2008-03-13 Howmedica Osteonics Corp. Apparatus for fusing adjacent bone structures

Also Published As

Publication number Publication date
CA2315467A1 (en) 2001-02-12
JP2001046924A (ja) 2001-02-20
JP3817393B2 (ja) 2006-09-06
KR20010050047A (ko) 2001-06-15
TW464711B (en) 2001-11-21
SG89343A1 (en) 2002-06-18
EP1080793A3 (de) 2004-07-07

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