EP0465311A1 - Gewölbte Glassscheibe mit elektrischen Leitern - Google Patents

Gewölbte Glassscheibe mit elektrischen Leitern Download PDF

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Publication number
EP0465311A1
EP0465311A1 EP91401748A EP91401748A EP0465311A1 EP 0465311 A1 EP0465311 A1 EP 0465311A1 EP 91401748 A EP91401748 A EP 91401748A EP 91401748 A EP91401748 A EP 91401748A EP 0465311 A1 EP0465311 A1 EP 0465311A1
Authority
EP
European Patent Office
Prior art keywords
strips
glazing
heating
layer
colored layer
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
EP91401748A
Other languages
English (en)
French (fr)
Other versions
EP0465311B1 (de
Inventor
Jacques Polat
Eric Szuwalski
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.)
Saint Gobain Glass France SAS
Saint Gobain Vitrage SA
Original Assignee
Saint Gobain Vitrage SA
Saint Gobain Vitrage International SA
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 Saint Gobain Vitrage SA, Saint Gobain Vitrage International SA filed Critical Saint Gobain Vitrage SA
Publication of EP0465311A1 publication Critical patent/EP0465311A1/de
Application granted granted Critical
Publication of EP0465311B1 publication Critical patent/EP0465311B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • Such glazing is obtained by depositing on the surface of a glass sheet a series of narrow resistance bands of an electroconductive composition. These resistance bands are screen printed flat on the glass sheet before bending, so that the electrically conductive composition is baked during the heating preceding the bending and tempering operation of the glazing.
  • the electroconductive composition is made of a pasty suspension, in an organic binder, of metallic silver and a frit, that is to say of a glass with low melting point.
  • the resistance bands forming the network are relatively thin so as not to obstruct visibility through the glazing and lead to wider collecting strips therefore more conductive, located near the edges of the glazing.
  • These bands Collectors are made of a composition identical to that of the resistance bands and are deposited in the same way and preferably at the same time as these. The current leads are then welded to these collector strips.
  • the glazing can then be taken to the bending / tempering installation where it is heated to bending temperature and shaped in a bending station.
  • the purpose here is not to expand on the manner in which this shaping takes place, very numerous existing processes being well known to those skilled in the art. It may, however, be recalled that the most difficult shapes to achieve - at least while respecting the most stringent optical quality standards - are those which have surfaces with a very small radius of curvature with fold lines located in the marginal areas of the glass sheet. However, these shapes are typically those required for the rear glasses of motor vehicles.
  • the critical zone is also the zone where most of the collector strips are concentrated.
  • these collecting strips are of a white or whitish color and therefore tend to reflect heat in a greater proportion than transparent glass and even much greater than the enamelled black bands which absorb the higher the heat and therefore heats up more significantly.
  • this critical area there are therefore both reflective and heat absorbing tapes.
  • This colored layer preferably consists of a new enamelled layer deposited by a third or if necessary - fourth pass in screen printing.
  • this colored layer is black in color. This latter choice is practically imposed, since the collecting strip is not placed directly on the glass but on the black enameled framing strip, the objective of course being to obtain strips which merge in their colors.
  • the covering of the collector strip is only partial and must leave at least the soldering zones of the terminals free.
  • the covered areas must be distributed according to the temperature profile corresponding to the form of glazing expected.
  • a given temperature profile in fact corresponds to a multiplicity of frames which will ultimately be selected according to the greater or lesser ease there is of depositing them by screen printing and as a last resort, according to their aesthetic character.
  • a frame depends not only on the shape to be given to the glazing, but also on its tint, a dark glass having overall a different behavior with regard to its heating than that of a clear glass.
  • Figure 1 is a very schematic representation of a rear window of a motor vehicle.
  • the telescope 1 is constituted by a glass sheet, for example 3.2 mm thick, the central part 2 of which is slightly curved and the lateral wings 3, 4 of which are strongly folded around axes 5, 6 and also having a certain curvature as indicated in 7.
  • the entire periphery of the glazing is provided with a layer of black enamel 8 forming a frame. It can be a continuous or degraded layer, made for example of a succession of points more and more spaced as one approaches the central part 2.
  • a heating network consisting of thin conductive strips 9 made of a silver frit which all lead to larger collecting strips 10, arranged along two parallel edges. These silver bands are white. These collecting strips receive the current supply terminals which are welded.
  • the enamel layer 8 and the strips 9, 10 of the heating network are both essentially composed of a suspension in a binder of a glass with a low melting point or sintered. They are deposited by screen printing and must then be cooked. This cooking is carried out in the furnace for reheating the glass sheets before bending.
  • FIG. 2 illustrates a collecting strip coated with a series of black strips 11 which leave visible white stripes.
  • This blackening is effected by the deposition of a new layer of black enamel which masks the collecting strip.
  • the same composition can be used as for layer 8 or any other composition which may be less expensive, since this masking layer is not exposed to solar radiation (the heating network is always on the internal face of the telescope, this masking overlay is therefore behind layer 8).
  • This overlay is deposited leaving a part of the collecting strip visible so as to constitute an alternation of dark zones and light zones, these zones being distributed so as to obtain the most suitable heating for the form of glazing which is desired after bending.
  • the colored layer is arranged so as to form alternating black or white lines, more or less long depending on their position on the glazing.
  • Other patterns for example of the grid type, points, peas, split peas, according to a uniform or degraded distribution scheme can of course be envisaged taking into account the shape of the glazing and as a last resort the aesthetic appearance.
  • pattern testing is therefore necessary for each new type of glazing - knowing that a white area is cooler and therefore leads to the formation of a relatively flatter area, while a black area is warmer and leads to an area where the deformation is accentuated. It may also be noted that the pattern will preferably be different depending on whether the glass sheet is made of tinted glass or not. Once the pattern has been chosen, there is a perfectly repetitive bending due to a very well controlled heating profile and this in an extremely localized manner due to the precision of a deposition by screen printing.

Landscapes

  • Joining Of Glass To Other Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Surface Heating Bodies (AREA)
  • Insulated Conductors (AREA)
  • Inorganic Insulating Materials (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Glass Compositions (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Catching Or Destruction (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Laminated Bodies (AREA)
EP91401748A 1990-07-02 1991-06-27 Gewölbte Glassscheibe mit elektrischen Leitern Expired - Lifetime EP0465311B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9008314 1990-07-02
FR9008314A FR2663885B1 (fr) 1990-07-02 1990-07-02 Vitrage en forme muni d'un reseau chauffant.

Publications (2)

Publication Number Publication Date
EP0465311A1 true EP0465311A1 (de) 1992-01-08
EP0465311B1 EP0465311B1 (de) 1994-10-19

Family

ID=9398218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401748A Expired - Lifetime EP0465311B1 (de) 1990-07-02 1991-06-27 Gewölbte Glassscheibe mit elektrischen Leitern

Country Status (10)

Country Link
EP (1) EP0465311B1 (de)
JP (1) JPH04229984A (de)
KR (1) KR920003802A (de)
AT (1) ATE113154T1 (de)
CZ (1) CZ279460B6 (de)
DE (1) DE69104655T2 (de)
DK (1) DK0465311T3 (de)
ES (1) ES2065637T3 (de)
FR (1) FR2663885B1 (de)
HU (1) HU214721B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005105691A1 (ja) 2004-04-28 2005-11-10 Asahi Glass Company, Limited 導電性プリントを有するガラス板およびその製造方法
WO2008025756A1 (en) * 2006-08-31 2008-03-06 Saint-Gobain Glass France Glazing
WO2013023832A1 (fr) * 2011-08-12 2013-02-21 Agc Glass Europe Vitrage automobile avec motifs emailles
WO2019206592A1 (de) 2018-04-25 2019-10-31 Saint-Gobain Glass France Verfahren zum drucken einer strukturierten silberbeschichtung mit verbesserter stromtragfähigkeit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109515124A (zh) * 2018-11-12 2019-03-26 江麓机电集团有限公司 一种内嵌拦阻网的排气窗
CZ2018661A3 (cs) * 2018-11-30 2019-12-18 Thermo Glass.eu s.r.o. Topné bezpečnostní zasklení

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1464586A (fr) 1965-03-27 1967-01-06 Inst Francais Du Petrole Procédé permettant la combustion de mélanges globalement pauvres dans les moteurs à allumage commandé et dispositifs pour sa mise en oeuvre
GB2091529A (en) * 1981-01-14 1982-07-28 Boussois Sa Heatable Panels
EP0193464A2 (de) * 1985-02-27 1986-09-03 Saint-Gobain Vitrage International Herstellungsverfahren einer heizbaren Glasscheibe und Siebdruckschablone zum Ausführen dieses Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1464586A (fr) 1965-03-27 1967-01-06 Inst Francais Du Petrole Procédé permettant la combustion de mélanges globalement pauvres dans les moteurs à allumage commandé et dispositifs pour sa mise en oeuvre
GB2091529A (en) * 1981-01-14 1982-07-28 Boussois Sa Heatable Panels
EP0193464A2 (de) * 1985-02-27 1986-09-03 Saint-Gobain Vitrage International Herstellungsverfahren einer heizbaren Glasscheibe und Siebdruckschablone zum Ausführen dieses Verfahrens

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005105691A1 (ja) 2004-04-28 2005-11-10 Asahi Glass Company, Limited 導電性プリントを有するガラス板およびその製造方法
EP1748034A1 (de) * 2004-04-28 2007-01-31 Asahi Glass Company, Limited Glasplatte mit leitfähigem aufdruck und herstellungsverfahren dafür
EP1748034A4 (de) * 2004-04-28 2008-05-28 Asahi Glass Co Ltd Glasplatte mit leitfähigem aufdruck und herstellungsverfahren dafür
WO2008025756A1 (en) * 2006-08-31 2008-03-06 Saint-Gobain Glass France Glazing
WO2013023832A1 (fr) * 2011-08-12 2013-02-21 Agc Glass Europe Vitrage automobile avec motifs emailles
WO2019206592A1 (de) 2018-04-25 2019-10-31 Saint-Gobain Glass France Verfahren zum drucken einer strukturierten silberbeschichtung mit verbesserter stromtragfähigkeit

Also Published As

Publication number Publication date
FR2663885B1 (fr) 1993-05-28
ES2065637T3 (es) 1995-02-16
EP0465311B1 (de) 1994-10-19
HU214721B (hu) 1998-05-28
DK0465311T3 (da) 1995-04-03
KR920003802A (ko) 1992-02-29
DE69104655T2 (de) 1995-05-24
HU912188D0 (en) 1991-12-30
DE69104655D1 (de) 1994-11-24
FR2663885A1 (fr) 1992-01-03
ATE113154T1 (de) 1994-11-15
CZ279460B6 (cs) 1995-05-17
HUT60585A (en) 1992-09-28
JPH04229984A (ja) 1992-08-19
CS203891A3 (en) 1992-01-15

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