CN1179130A - Method to fabricate shaped laminated glass panes - Google Patents
Method to fabricate shaped laminated glass panes Download PDFInfo
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- CN1179130A CN1179130A CN 96192649 CN96192649A CN1179130A CN 1179130 A CN1179130 A CN 1179130A CN 96192649 CN96192649 CN 96192649 CN 96192649 A CN96192649 A CN 96192649A CN 1179130 A CN1179130 A CN 1179130A
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Abstract
This invention is directed to a method for manufacturing shaped laminated glass panes comprising an inner glass sheet, and intermediate layer such as thermoplastic material and an outer glass sheet. The method comprises providing a layer of silicate water-based paint on at least a portion of a glass sheet surface which is to bear against the intermediate layer, drying the paint at moderate temperature to remove water and cure the paint, placing the outer and inner glass sheets together so that the surfaces which are to bear against the intermediate layer are in proximity with one another and are parallel, bending the outer and inner glass sheets simultaneously into a final shape at elevated temperature, and cooling the outer and inner glass sheets.
Description
The present invention relates to a kind of method of making special-shaped laminated glass plate, said special-shaped laminated glass plate comprises the middle layer of for example thermoplastics book film that is laminated between two non-conventional glass sheets.More particularly, at least one block of sheet glass its with the surface that pastes mutually in the middle layer on scribble water base silicate coating.
The laminated glass window of automobile, for example, windsheild generally includes the opaque border around the window edge surface.This obstacle band makes and can't see tackiness agent or other stationary installation that is in back, windsheild edge from the outside.The ceramic enamel composition that these borders are normally formed by the mixture of the metal in appropriate organic solvent or metal oxide and glass powder.
In some cases, when windsheild was installed on the automobile, these borders were set on the glass surface that is exposed to automotive interior.When the glass as one of paired sheet glass passes sag bent stove (the sagbending furnace), be painted on this not the coating on the curved glass by scorification to its surface, described paired sheet glass before laminated by sag bent together.
Consider that from wearing quality present more it is desirable in laminated product is arranged on these borders on the glass sheet surface in the middle layer that reclines.In people's such as Harrison U.S. Pat 4644139, a kind of method that such border is set is disclosed.It comprises makes when the bending the final internal surface of the glass outer sheet that carries zone of opacity topmost two sheet glass sag bent together.After making sheet glass cooling, plastic interlayer is placed on the inner layer glass sheet, then the glass outer sheet is placed on zone of opacity is contacted with the middle layer.At last, two layers of sheet glass are bonded on the middle layer.A shortcoming of this invention is that because the curvature of special-shaped glass increases, unlikely matching formed suitable compound windsheild after two layers of sheet glass were harmonious.Another kind of manufacturing commonly used has the laminated windsheild method on ceramic coating border, described in people's such as Nikodem U.S. Pat 4786784, comprise two calcination stepses, the first step is to melt coating and it is fused to glass surface, and second step was the molding glass template.These methods have increased glass and have produced the possibility of optical distortion owing to require re-baking glass.In general, in such method, ceramic coating is applied to execute carries out drying then to remove organic constituent on one of windsheild two templates, and roasting is melted on the template coating, and template is in " flat board " state.On coating, apply after the separant, with another template pairing of this template and windsheild, with coated surface be arranged in template to inboard and with this template to roasting and bend to the net shape of hope.Treat after the cooling of this two template they to be separated, flush away separant then, at last middle layer such as polyvinyl butyral acetal are laminated in this template between.In this method, during glass bending, exist because of the danger of coating fusing with two coherent increases of sheet glass.The heating that should be appreciated that coating with glass bending is not carried out in same step to its net shape because coating contains the organic constituent that can form gaseous reaction product when storing temperature.Said gas can not be overflowed from the gap between two layers of sheet glass during glass bending.
People's such as Gillner U.S. Pat 5324373 discloses a kind of improving one's methods of such windsheild of making.It comprises windsheild template of coating, then, after the coating drying, this template is matched in the outside mode of applicator surface.Subsequently, this template is carried out prebuckling to the part moulding and heat coating to roasting.Apply coating and right in interior form recombinant template with separant then with applicator surface.With the template of recombinant to be contained on the bending jig and again roasting to finish moulding process.Flush away cools off the right separant of template and laminated with the middle layer that is in therebetween then.Thereby this method is complicated and needs re-baking glass to increase the possibility of optical distortion.
The present invention is a kind of method of making the special-shaped glass plate of laminated glass, and this laminated glass comprises an inner layer glass sheet, a middle layer and a glass outer sheet.Said method may further comprise the steps: the water base coating of configuration one deck silicate on the surface in the middle layer that reclines of at least a portion of a sheet glass; Dry this coating is also coating material solidified with the moisture that removes basically in the coating under being lower than the temperature of glass softening point; Be stacked together so that two glass sheet surface in the middle layer that reclines are closer to each other and parallel with the inner layer glass sheet outer; Skin and inner layer glass sheet are bent to net shape simultaneously being at least under about 550 ℃ temperature; Outer and the inner layer glass sheet of cooling.
The method according to this invention, its advantage are to produce simply and have seal coating, and for example, the laminated special-shaped glass window of internal surface that has the Opaque paint border is such as automotive windshield.Method of the present invention can be to make the little glass port of distortion than the simpler and more effective mode of art methods.
The present invention is further illustrated with the form of embodiment below with reference to accompanying drawings, wherein,
Fig. 1 is the synoptic diagram that has the glass template of Opaque paint thereon.
Fig. 2 is before the glass bending operation, an end view that is assembled in two glass templates on another piece.
Fig. 3 is the synoptic diagram of two glass templates after finishing bending operation of Fig. 2.
As above disclosed, manufacture method of the present invention is used to provide for example automotive windshield or rear window The special-shaped glass plate of laminated glass (backlite). This laminated glass comprises in the inner layer glass sheet, Interbed is plastics such as polyvinyl butyral resin and a glass outer sheet for example. This laminated glass is at a sheet glass Recline at least a portion surface in intermediate layer with the water base silicate paint of one deck. Preferably, this coating is Opaque paint and be provided with the border form around the whole periphery of sheet glass. Said opacity Effect is to prevent from seeing such as below the instrument board or the part more than the head (headline) from automobile external, Otherwise because hurricane globe position and these positions of mounting means in automobile are visible. Go-go automobile The opacity is arranged on it. These zones can be in diverse location severally, for example in hurricane globe top and bottom or In its both sides.
Employed coating is water base silicate paint in the method. The preferred water based paint of the method comprises As the silicate of main component, for example, potassium silicate or sodium metasilicate are as metal oxide such as the oxygen of coloring agent Change copper, in this case for coating provides black, and water. This type of many water base silicate paint is market On can buy, one of them is CERAM-VUETM(Industrial Control Development Inc, Vancouver, WA), it is the black silicon phosphate coating material of this class. According to this Disclosed content, the useful water based paint of other to one skilled in the art in the methods of the invention Apparent. Preferred water base silicate paint is disclosed in the application of Boaz in the methods of the invention Number be415951, the applying date is that the exercise question in March 24 nineteen ninety-five is the U.S. of " sheet glass water based paint " In state's patent application, this patent is transferred to the applicant with the present invention. It comprises sodium metasilicate, water, Thin metal oxide pigment and as the zinc oxide of adhesion promotor.
According to disclosure of the present invention, be provided as below the two blocks of sheet glass that have of making as hurricane globe With betwixt intermediate layer and on the segment glass sheet in the intermediate layer that reclines the special-shaped laminated glass plate of applying coatings The explanation of preferred embodiment of method. Although coating can be applied to the part of a sheet glass On, but if necessary, it can be painted on the surface in the intermediate layer that reclines of two blocks of glass. This explanation Not for the wider principle of the inventive method is restricted, although and with preferred material this is described Bright method, but this does not mean can not use other materials in said method.
Be shown in glass template 10 among Fig. 1, that make by sheet glass and on peripheral part, have the water base silicate coating of one deck.This glass template (or sheet glass) 10 faces outside when it is installed in the automobile.In general, when inside and outside two glass templates are laminated in a time-out by laminated middle layer, the size of glass outer template is greater than the size that faces the glass template (inner layer glass template) in the automobile.According to an embodiment, coating 12 is applied to the surface of first glass template 10, and this surface is laminated into when forming laminated windsheild on second glass template in template 10 and contacts with the middle layer.In the art, two surfaces of template 10 are commonly called surperficial #1 and surperficial #2.Surface #1 is the surface that is in ragged edge in windsheild is installed in automobile time the and surperficial #2 is and contacted surface, middle layer.Though as above said coating can be set on the surperficial #2 of glass outer template, also can or also be arranged on simultaneously the inner layer glass template in the windsheild that combines with contacted surface, middle layer (#3) on.Preferably coating is arranged on the #3 surface.Coating can apply in any way, and for example, roller coat, brushing or screen printing are preferably screen printing.
For applying coatings best, keep moist environment around being preferably in coating.Can be US 08/295574 by for example application number, the applying date is on August 25th, 1994, exercise question keeps described wet environment for disclosed inventive method in the U.S. Patent application of " to the apparatus and method for of applying coatings on glass ", and this invention and the present invention transfer the applicant jointly.In several examples of the inventive method, the water base coating of wherein used silicate is in the scope of the common above invention disclosed of transferring the possession of of conduct, and its humidity on every side preferably remained on 80 ± 5%RH when coating was coated.Be not necessary to keep moist environment in order to implement method of the present invention.According to the disclosure, the selection of suitable environment condition belongs within those skilled in the art's the technical scope.
Make coating stand high temperature then, as by infrared (infra red) stove or microwave oven, also coating material solidified to remove moisture content nearly all in the coating.This step is carried out be lower than the softening temperature of glass in temperature below, and concrete temperature is not a key.The preferred moderate moisture of using for example, is lower than 400 ℃ temperature, more preferably between 100～200 ℃.Because water is the unique volatile constituent that is removed, therefore after expulsion moisture content, can use the neutral temperature that is lower than glass softening point to make paint solidification.This is opposite with the certain methods of using traditional organic solvent based glass paint, requires much higher temperature in order to solidify them,, is higher than the temperature of glass softening point that is.In one embodiment, when above disclosed coating is applied on the template with 15 micron thickness, in infra-red furnace, under about 200 temperature, finishes the coating drying and take and be about 1 minute, and in microwave oven the corresponding time for being less than 1 minute.For dry and coating material solidified layer of required time, the thickness of dope layer is not critical.According to the disclosure, the optimum parameter of dry and coating material solidified layer is apparent to one skilled in the art.
Behind drying step, if coating be incorporated into the glass template selected surface so that this coating can not wiped off with instrument or other scrapper from glass yet.Be enough to make the glass template when being subject to processing and from an operation, being transferred to the opacity that can not damage coating when another is operated in conjunction with very solid.
Now referring to accompanying drawing 2.The method according to this invention, then, the second glass template 14 (having surperficial #3 and #4) and the first glass template 10 are put together (in Fig. 2 and 3 only display end view) so that the glass template surface in the middle layer that reclines (#2 and #3) mutually near and parallel.The second glass template 14 is generally short than the first glass template 10.The second glass template 14 is towards automotive interior in the time of in windsheild is installed in automobile.The surperficial #4 of the internal layer template of the windsheild that more particularly, is mounted is the inner face towards automotive interior.Be at least about under 550 ℃ the high temperature subsequently, any available method by for example curved glass bends to net shape simultaneously with skin and internal layer template.The temperature of curved glass is preferably between about 550 ℃ and 650 ℃.A kind of method commonly used comprises the anchor clamps shown in Fig. 2 and 3.In this method, the right bending of glass template can by with template to carrying out on 10,14 bending jigs 16 that are placed on shown in Fig. 2 and 3.Right anchor clamps are put into common with in the numeral glass bending chambers of representing 18 then template will to be housed.As prior art was known, this torture chamber was a long and narrow cell, and the glass bending device passes wherein lentamente.When bending apparatus passes cell, glass template 10,14 be heated to high temperature and cause their crooked or sagging become with molded surface or with the corresponding to shape of glass bending device shown in Figure 3.Sheet glass is bent to suitable shape and forms laminated windsheild thus.They are identical with the position toward each other in its windsheild of making in the position toward each other of Fig. 2 in 3.
After as shown in Figure 3 with the first and second glass template bendings, with their the cooling and make it separated from one another.During bending operation, opacity 12 is attached to glass surface by roasting and becomes the more nonvolatil part of glass surface.If said window is the heating screen that is used as the electric heating windsheild or is used as rear window (backlite), the glass template can also have conductive coating and wire connection clamp or the like so.More particularly, such window can comprise heater that stamps and toast and the lip-deep conductive multilayer device that is applied to the middle layer that reclines of glass outer sheet.In this case, after cooling step, with two layers of sheet glass separately, then the multi-layered devices of conduction is applied on the surface in the middle layer that reclines of outer sheet glass.
In order to form laminated windsheild, the middle layer (not shown in FIG.) should be inserted between the curved glass template 10,14.Usually used middle layer is the polyvinyl butyral acetal of knowing in the art.After this, with known type formation closing operation two glass molds flaggies are closed and form the laminated glass windsheild.
The following examples are used to describe method of the present invention, and introduce the optimum implementation that the contriver thinks, but it is not construed as limiting the invention.
Embodiment
This example is the embodiment according to a kind of embodiment of the inventive method.As above disclosed, in making the technology of windsheild, be #1～#4 with the surface marking of making two used templates of windsheild, promptly be followed successively by #4 from the #1 of automobile outside to automotive interior.From flat glass film, cut out long and short template.With black silicon phosphate coating material (water glass, cupric oxide pigment, water and zinc oxide) screen printing on the periphery of the surperficial #3 of short template.Use microwave oven at about 100 ℃ of these coating of drying.Microwave oven is heating glass not.Long and short template is supporting and combine so that coating is in the right inside of this template.With this template to be contained on the bending jig and pass lehr and be heated to about 575 ℃ and with this template to bending to needed shape.After this template is to cooling, with two template separation, washing, drying.
Place the layer of polyethylene butyral between two templates (#2 and #3) and with this template that has the middle layer to being about 275lbs/in at the high temperature and the pressure that are about 150 ℃
2Following hot pressing and vinyl bonds is incorporated into two surfaces and forms laminated windsheild.
Claims (9)
1. method of making the special-shaped glass plate of laminated glass, said laminated glass comprises an inner layer glass sheet (14), a middle layer (12) and a glass outer sheet (10), said method may further comprise the steps:
On the surface in the middle layer that reclines of at least a portion of a sheet glass, provide one deck silicate water base coating;
Dry said coating is to remove the moisture in the coating basically and to solidify said coating under the temperature of the softening temperature that is lower than said glass;
Said skin and inner layer glass sheet (10,14) be stacked together that the surface of said two sheet glass that make the said middle layer (12) that reclines is close each other and parallel;
Said skin and inner layer glass sheet (10,14) are bent to net shape simultaneously being at least under about 550 ℃ high temperature; And
Cool off said skin and inner layer glass sheet.
2. a manufacturing has the method for special-shaped vehicle glass plate of the laminated glass in an inner layer glass sheet and a glass outer sheet and a thermoplastics book film middle layer, may further comprise the steps:
On the surface in the middle layer that reclines of at least a portion of a sheet glass, provide one deck water base silicate coating;
Dry said coating is present in the moisture in the coating and solidifies said coating to remove basically under being lower than about 400 ℃ temperature;
Said skin and inner layer glass sheet be stacked together that the surface of said two sheet glass that make the said middle layer that reclines is close each other and parallel;
Said skin and inner layer glass sheet are bent to net shape simultaneously being at least under about 550 ℃ high temperature; And
Cool off said skin and inner layer glass sheet.
3. according to the method for claim 1 or 2, wherein said bending step is to use the glass bending anchor clamps to carry out.
4. according to the method for claim 3, wherein said glass bending anchor clamps have the corresponding curved surface of net shape with glass outer sheet surface.
5. according to the method for claim 1 or 2, wherein said sheet glass is an automotive window, and the middle layer is a thermoplastics book film.
6. according to the method for claim 5, wherein said thermoplastics book film is a polyvinyl butyral acetal.
7. according to the process of claim 1 wherein that the step that also is included in laminated middle layer between internal layer and the glass outer sheet is to form said plate.
8. according to the process of claim 1 wherein that said window is automotive windshield and/or rear auto window.
9, according to the method for claim 1 or 2, wherein said drying step comprises makes said coating carry out drying in infra-red furnace or microwave oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96192649 CN1179130A (en) | 1995-03-24 | 1996-03-19 | Method to fabricate shaped laminated glass panes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/410,268 | 1995-03-24 | ||
| CN 96192649 CN1179130A (en) | 1995-03-24 | 1996-03-19 | Method to fabricate shaped laminated glass panes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1179130A true CN1179130A (en) | 1998-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96192649 Pending CN1179130A (en) | 1995-03-24 | 1996-03-19 | Method to fabricate shaped laminated glass panes |
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| Country | Link |
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| CN (1) | CN1179130A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100581813C (en) * | 2003-06-12 | 2010-01-20 | 皮尔金顿意大利股份公司 | Process for the production of a curved laminated glass pane |
| US7892629B2 (en) | 2000-05-03 | 2011-02-22 | Saint-Gobain Glass France | Laminated glazing material |
| CN102811875A (en) * | 2010-03-25 | 2012-12-05 | 旭硝子株式会社 | Method of manufacturing vehicle window pane member |
| CN102046371B (en) * | 2008-05-27 | 2013-11-06 | 陶氏康宁公司 | Adhesive tape and laminated glass |
| US20170274626A1 (en) | 2014-08-20 | 2017-09-28 | Corning Incorporated | Methods of forming shaped glass articles from glass sheets |
| CN109843826A (en) * | 2016-11-07 | 2019-06-04 | 日本电气硝子株式会社 | Laminated glass |
| CN110576658A (en) * | 2013-02-26 | 2019-12-17 | 康宁股份有限公司 | method of forming shape-retaining flexible glass-polymer laminates |
| CN110876268A (en) * | 2018-06-29 | 2020-03-10 | 法国圣戈班玻璃厂 | Method for manufacturing laminated glass products avoiding enamel from adhering to opposite glass |
-
1996
- 1996-03-19 CN CN 96192649 patent/CN1179130A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7892629B2 (en) | 2000-05-03 | 2011-02-22 | Saint-Gobain Glass France | Laminated glazing material |
| CN100581813C (en) * | 2003-06-12 | 2010-01-20 | 皮尔金顿意大利股份公司 | Process for the production of a curved laminated glass pane |
| CN102046371B (en) * | 2008-05-27 | 2013-11-06 | 陶氏康宁公司 | Adhesive tape and laminated glass |
| CN102811875A (en) * | 2010-03-25 | 2012-12-05 | 旭硝子株式会社 | Method of manufacturing vehicle window pane member |
| CN110576658A (en) * | 2013-02-26 | 2019-12-17 | 康宁股份有限公司 | method of forming shape-retaining flexible glass-polymer laminates |
| CN110576658B (en) * | 2013-02-26 | 2022-07-15 | 康宁股份有限公司 | Method of forming shape-retaining flexible glass-polymer laminates |
| US20170274626A1 (en) | 2014-08-20 | 2017-09-28 | Corning Incorporated | Methods of forming shaped glass articles from glass sheets |
| US10479052B2 (en) | 2014-08-20 | 2019-11-19 | Corning Incorporated | Methods of forming shaped glass articles from glass sheets |
| US11400691B2 (en) | 2014-08-20 | 2022-08-02 | Corning Incorporated | Methods of forming shaped glass articles from glass sheets |
| CN109843826A (en) * | 2016-11-07 | 2019-06-04 | 日本电气硝子株式会社 | Laminated glass |
| CN110876268A (en) * | 2018-06-29 | 2020-03-10 | 法国圣戈班玻璃厂 | Method for manufacturing laminated glass products avoiding enamel from adhering to opposite glass |
| CN110876268B (en) * | 2018-06-29 | 2022-09-09 | 法国圣戈班玻璃厂 | Method for manufacturing laminated glass products avoiding bonding of enamel to opposite glass |
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