EP1057657A1 - Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel - Google Patents

Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel Download PDF

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Publication number
EP1057657A1
EP1057657A1 EP98954496A EP98954496A EP1057657A1 EP 1057657 A1 EP1057657 A1 EP 1057657A1 EP 98954496 A EP98954496 A EP 98954496A EP 98954496 A EP98954496 A EP 98954496A EP 1057657 A1 EP1057657 A1 EP 1057657A1
Authority
EP
European Patent Office
Prior art keywords
writing
glass sheet
glass
board
procedure
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
EP98954496A
Other languages
English (en)
French (fr)
Other versions
EP1057657B1 (de
Inventor
José Antonio ALONSO GOROSTIZA
Rafael Torres Sancho
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.)
Guardian Llodio SL
Original Assignee
Guardian Llodio SL
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 Guardian Llodio SL filed Critical Guardian Llodio SL
Publication of EP1057657A1 publication Critical patent/EP1057657A1/de
Application granted granted Critical
Publication of EP1057657B1 publication Critical patent/EP1057657B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/10—Writing surfaces thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/06—Blackboards rigid

Definitions

  • the invention relates to a procedure for obtaining a glass writing board, in which writing is performed by means of a marker or a similar tool, with its main characteristic being that said surface is matted or dulled in order to prevent reflections or glare, allowing said surface to be complementarily used for viewing slides.
  • a further object of the invention is the make up or structure of the board obtained according to said procedure, which board is mainly composed of a tempered glass sheet with its writing surface matted and provided on the opposite side with an opaque layer, which may be of a different nature or even be complemented by more different boards or layers.
  • plastic boards normally white in colour
  • characters may be written using a specific marker, with such characters easily removed by a suitable eraser.
  • the invention relates to a manufacturing procedure for a writing board, as well as to the structure of the board thus obtained, which shows all advantages of this type of boards but none of their disadvantages, as it does not reflect light nor therefore images, and withstands any solvent except hydrofluoric acid, being highly durable and practically undegradable over time and use, and which can be used as a projection screen for slides without glare or reflections, all of this due to said board being obtained from a matted tempered glass sheet as will be described throughout the present description.
  • the procedure for obtaining or manufacturing the board is based on the following operative stages:
  • the matting creates a roughness or porosity of the surface which reduces or even eliminates reflections, such that the treated surface does not reflect images nor cause glare.
  • the most effective matting is achieved using acid, as this method results in a fine and evenly distributed porosity or roughness throughout the entire surface.
  • the coarsest matting and also the cheapest is obtained with suitable rollers in the rolling lamination process of the glass.
  • Sand matting is an intermediate solution as regards quality and price.
  • vitrifiable paint is applied, or an opaque layer applied by serigraphy or any other means on the opposite surface to the matted writing surface.
  • the glass is tempered so that in this tempering a double effect is achieved; on one hand the enamel is vitrified, so that it is permanently attached to the glass, and the tempering itself is achieved.
  • the board thus obtained is of tempered glass, so that in the event of breaking it shatters into many particles.
  • a matting or dulling process may be performed on both faces of the tempered glass sheet, with the opaque layer applied to either face, said layer consisting of a vitrifiable enamel applied with serigraphy.
  • the procedure may employ two glass sheets, one tempered and the other of normal glass, so that the first one is matted to form the writing surface, with the two surfaces joined as usual by a suitable layer of plastic, preferably polyvinyl butyral (PVB), which layer in turn determines the board's opacity, for which purpose it shall be coloured, preferably in white.
  • a suitable layer of plastic preferably polyvinyl butyral (PVB), which layer in turn determines the board's opacity, for which purpose it shall be coloured, preferably in white.
  • the tempered and matted glass sheet prefferably be serigraphed on the face opposite the writing surface and the union to the normal glass sheet to be performed using transparent PVB, which in this case will act as a union between the two glass sheets, as the opacity will be provided by serigraphy.
  • a section of part of a board can be seen comprising a tempered glass sheet (1) whose two surfaces (2, 2') have been matted to prevent glare or reflection on the surface of faces (2, 2'), with one of these surfaces provided with a vitrifiable enamel layer (3) applied by serigraphy, all of this such that face (2) comprises the writing surface and layer (3) applied to the opposite face (2') determines the opacity of the board.
  • the board may consist of a tempered glass sheet (1) and a normal glass sheet (1'), with the tempered glass sheet (1) provided with the corresponding matting on its surface (2) which makes up the writing surface, while between the two glass sheets (1, 1') is provided a plastic layer (4), preferably of polyvinyl butyral which acts as a junction element and also provides the required degree of opacity for which said PVB layer shall be coloured, preferably white.
  • the board obtained according to the embodiment of figure 2 will have the properties of tempered glass, so that in the event of breaking the glass segments will not become loose but will remain joined to the junction element or PVB layer.
  • the opacity is obtained by colouring the plastic layer (4), preferably white.
  • the board includes as in the above cases two glass sheets (1, 1'), the first tempered and the second normal. Tempered glass sheet (1) is matted on writing surface (2) and is provided with a serigraphed surface (3') on the opposite surface. The two glass sheets are joined by means of a suitable plastic layer (4'), such as PVB, which in this case will be transparent as it functions solely as a junction of the two glass sheets.
  • a suitable plastic layer (4') such as PVB, which in this case will be transparent as it functions solely as a junction of the two glass sheets.

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP98954496A 1998-11-19 1998-11-19 Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel Expired - Lifetime EP1057657B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES1998/000315 WO2000030867A1 (es) 1998-11-19 1998-11-19 Procedimiento de fabricacion de una pizarra y pizarra obtenida con tal procedimiento

Publications (2)

Publication Number Publication Date
EP1057657A1 true EP1057657A1 (de) 2000-12-06
EP1057657B1 EP1057657B1 (de) 2003-09-03

Family

ID=8302798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954496A Expired - Lifetime EP1057657B1 (de) 1998-11-19 1998-11-19 Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel

Country Status (5)

Country Link
EP (1) EP1057657B1 (de)
AT (1) ATE248717T1 (de)
DE (1) DE69817880D1 (de)
ES (1) ES2207003T3 (de)
WO (1) WO2000030867A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006119592A2 (en) 2005-05-13 2006-11-16 Polyvision, Naamloze Vennootschap Method for manufacturing a visual communication panel having a ceramic surface layer
CH699483A1 (de) * 2008-09-01 2010-03-15 Troesch Glas Ag Ferromagnetische Einrichtung mit wiederbeschreibbarer Nutzfläche.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2565691B1 (es) * 2014-10-02 2017-01-13 Imagina Concepto Industrial, S.L.U. Revestimiento de vidrio multifuncional, sistema con el revestimiento y uso del revestimiento
CN108638708A (zh) * 2018-07-22 2018-10-12 宁波赞扬文具有限公司 一种多功能塑料写字板及其制作方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB500443A (en) * 1937-10-20 1939-02-09 Percy Rowed Lang Improvements relating to slates, blackboards, and other repeatedly useable writing boards and tablets
EP0033352B1 (de) * 1980-02-01 1984-07-11 Weyel KG Schreibtafel, insbesondere grossflächige Wandtafel
ES1002753Y (es) * 1987-06-29 1989-02-01 R.B. Disenos, S.A. Y Cristales Curvados, S.A. (Cricursa) Panel mural en funcion de pizarra

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0030867A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006119592A2 (en) 2005-05-13 2006-11-16 Polyvision, Naamloze Vennootschap Method for manufacturing a visual communication panel having a ceramic surface layer
BE1016588A3 (nl) * 2005-05-13 2007-02-06 Polyvision Nv Werkwijze voor het vervaardigen van een visueel communicatiebord.
WO2006119592A3 (en) * 2005-05-13 2007-03-08 Polyvision Nv Method for manufacturing a visual communication panel having a ceramic surface layer
CN100575121C (zh) * 2005-05-13 2009-12-30 波利视觉股份有限公司 一种制造具有陶瓷表面层的可视通信面板的方法
CH699483A1 (de) * 2008-09-01 2010-03-15 Troesch Glas Ag Ferromagnetische Einrichtung mit wiederbeschreibbarer Nutzfläche.

Also Published As

Publication number Publication date
EP1057657B1 (de) 2003-09-03
DE69817880D1 (de) 2003-10-09
ATE248717T1 (de) 2003-09-15
WO2000030867A1 (es) 2000-06-02
ES2207003T3 (es) 2004-05-16

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