EP1057657B1 - Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel - Google Patents

Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel Download PDF

Info

Publication number
EP1057657B1
EP1057657B1 EP98954496A EP98954496A EP1057657B1 EP 1057657 B1 EP1057657 B1 EP 1057657B1 EP 98954496 A EP98954496 A EP 98954496A EP 98954496 A EP98954496 A EP 98954496A EP 1057657 B1 EP1057657 B1 EP 1057657B1
Authority
EP
European Patent Office
Prior art keywords
writing
glass sheet
procedure
glass
board
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.)
Expired - Lifetime
Application number
EP98954496A
Other languages
English (en)
French (fr)
Other versions
EP1057657A1 (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

Links

Images

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.
  • GB 500 443 A discloses a glass writing board with a roughened front surface and a rear surface coated with a dark pigment.
  • 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)

Claims (8)

  1. Verfahren zur Herstellung von Tafeln, das zum Ziel hat, eine Tafel mit entspiegelter Schreiboberfläche zu erhalten, auf der die geschriebenen Zeichen und/oder Flecke jeder beliebigen Art leicht zu reinigen sind, mit einer Oberfläche, die ausserdem zum Visualisieren von Diapositiven verwendet werden kann, die von einer Glasplatte mit einer Dicke ausgeht, die deren Härtung ermöglicht, mit für die zu schaffende Tafel geeigneten Abmessungen, wobei das Verfahren die folgenden Fertigungsphasen umfasst:
    Mattierung oder Trübung zumindest der Seite, die als Schreiboberfläche benutzt wird;
    Polieren der Glasplattenkanten;
    Auftragen einer einbrennbaren keramischen Farbe geeigneter Dicke mittels Siebdruck auf die der Schreibfläche entgegengesetzten Seite, um die erforderliche Opazität zu erlangen;
    Härten des Glases, bei dessen Arbeitsvorgang gleichzeitig die dauerhafte Fixierung der einbrennbaren keramischen Farbschicht erreicht wird;
  2. Verfahren zur Herstellung von Tafeln nach Patentanspruch 1, dadurch gekennzeichnet, dass beide Seiten der gehärteten Glasplatte einem Mattierungsprozess ausgesetzt werden.
  3. Verfahren zur Herstellung von Tafeln nach vorhergehenden Patentansprüchen, dadurch gekennzeichnet, dass auf einer der mattierten Seiten der gehärteten Glasplatte ein Siebdruckverfahren auf der Basis des Farbauftrags einer geeigneten keramischen Farbe zur Anwendung kommt, um die Opazitätsschicht zu erreichen.
  4. Verfahren zur Herstellung von Tafeln nach Patentanspruch 1, dadurch gekennzeichnet, dass auf der gehärteten und mattierten Glasseite, die den opakfarbenen Siebdruck aufweist, eine zweite normale Glasplatte angeordnet und fixiert wird.
  5. Verfahren zur Herstellung von Tafeln nach Patentanspruch 4, dadurch gekennzeichnet, dass zwischen der gehärteten Glasplatte und der normalen Glasplatte eine vorzugsweise weisse Kunststofffolie oder- film angebracht wird, die/der auf Polyvinylbutiral basiert, die/der als Verbundnexus der beiden Glasplatten wirkt und den gewünschten Mattheitsgrad hervorruft.
  6. Tafel, die nach dem Verfahren des Patentanspruches 1 gefertigt wird, dadurch gekennzeichnet, dass sie aus einer gehärteten Glasplatte (1) mit einer Dicke besteht, die vorzugsweise 3 und 6 mm umfasst, mit beliebiger Konfiguration und Abmessung, mit ihrer mattierten Schreibseite (2) und der gegenüberliegenden Seite (2'), die mit einer Opazitätsschicht (3) versehen ist, die durch Siebdruck auf der Basis von einbrennbarer keramischer Farbe erzielt wird.
  7. Tafel, die nach dem Verfahren des Patentanspruches 5 gefertigt wird, dadurch gekennzeichnet, dass sie aus zwei Glasplatten (1-1') besteht, die erstere von beiden aus gehärtetem Glas und die zweite aus normalem Glas, und dass zwischen beiden eine Kunststoffschicht (4) angeordnet ist, die die Opazitätsschicht und das Verbindungsmittel zwischen beiden Glasplatten (1-1') darstellt, wobei die Aussenseite der gehärteten Glasplatte (1) mit einer Mattierung (2) versehen ist, die die Schreiboberfläche bildet.
  8. Tafel, die nach dem Verfahren des Patentanspruches 5 gefertigt wird, dadurch gekennzeichnet, dass sie aus zwei Glasplatten (1-1'), der ersten von beiden aus gehärtetem Glas und der zweiten aus normalem Glas, besteht und dass zwischen beiden zwei Kunststoffschichten (3'-4') angeordnet sind, wobei die erste bestimmend für die Opazität, die durch Siebdruck auf der Basis von einbrennbaren keramischen Farben erreicht wird, ist und die zweite aus einem transparenten Kunststoffmaterial besteht, das als Verbindungsmittel der Glasplatten dient, mit der Besonderheit, dass auf der Aussenfläche der gehärteten Glasplatte (1) eine die Schreiboberfläche bestimmende Mattierung (2) vorgenommen wurde.
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 EP1057657A1 (de) 2000-12-06
EP1057657B1 true 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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1016588A3 (nl) * 2005-05-13 2007-02-06 Polyvision Nv Werkwijze voor het vervaardigen van een visueel communicatiebord.
CH699483A1 (de) * 2008-09-01 2010-03-15 Troesch Glas Ag Ferromagnetische Einrichtung mit wiederbeschreibbarer Nutzfläche.
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

Also Published As

Publication number Publication date
EP1057657A1 (de) 2000-12-06
DE69817880D1 (de) 2003-10-09
ATE248717T1 (de) 2003-09-15
ES2207003T3 (es) 2004-05-16
WO2000030867A1 (es) 2000-06-02

Similar Documents

Publication Publication Date Title
KR20160094429A (ko) 기록 가능하고 소거 가능한 마커 보드로 사용하기 위한 내구성 유리 제품
US2053173A (en) Shadow producing screen for luminous projections and other applications and process for its manufacture
AT414051B (de) Projektionswand mit einem glasschirm
US20190168488A1 (en) Composite pane having a multiple-ply composite layer and method for production thereof
DE102010005180A1 (de) Fahrzeugspiegel und Verfahren zu dessen Herstellung
EP0852999A3 (de) Geräuschdämmender Gegenstand und Verfahren zu seiner Herstellung
EP1111410A3 (de) Infrarot-absorbierender Filter
DE69230417T2 (de) Verbundglasscheibe
ATE161524T1 (de) Glasscheibe mit einer funktionsschicht
DE112018004356T5 (de) Laminat mit eingelegter sichtbehinderung aufweisend bessere festigkeit und optische qualität
EP1057657B1 (de) Herstellungsverfahren von schreibtafel, und damit hergestellte schreibtafel
DE102018004176A1 (de) Platte mit gedruckter Schicht, Herstellung derselben und Anzeigevorrichtung
GB2124815A (en) Method of applying signs
EP0882997A1 (de) Laminierter Sicherheitsspiegel mit reflektierender Beschichtung auf der Bindungsschicht
DE3818557C2 (de)
US4813990A (en) Method of making a bevelled glass assembly
DE112018001515T5 (de) Fahrzeug-Windschutzscheibe und Gegenstand für ein Fahrzeug
JP2017129827A (ja) 印刷層付き板および表示装置
US1802169A (en) Ornamental composite glass
US11331884B2 (en) Decorative design element in black print
DE112018001866T5 (de) Vordere Viereckseitenscheibe eines Fahrzeugs
KR101613085B1 (ko) 양면 난반사 유리스크린 겸용 칠판 및 그 제조방법
DE102021122494A1 (de) Glasverbund für ein beleuchtetes Fahrzeugdach, Verfahren zur Herstellung eines Glasverbundes und beleuchtetes Fahrzeugdach
EP0911147B1 (de) Verfahren zum Kleben von Facetten
US4992120A (en) Image formation on glass surfaces

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000703

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GUARDIAN LLODIO, S.L.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69817880

Country of ref document: DE

Date of ref document: 20031009

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031119

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031119

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031203

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031203

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031203

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031203

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031204

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040203

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2207003

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031203

26N No opposition filed

Effective date: 20040604

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20041018

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20051121

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20051121