CN107428587A - Glass plate - Google Patents
Glass plate Download PDFInfo
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- CN107428587A CN107428587A CN201680020707.6A CN201680020707A CN107428587A CN 107428587 A CN107428587 A CN 107428587A CN 201680020707 A CN201680020707 A CN 201680020707A CN 107428587 A CN107428587 A CN 107428587A
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- China
- Prior art keywords
- glass plate
- shape
- interarea
- glass
- orthogonal
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
Abstract
It is related to the glass plate (10) of the shape including two relative main surfaces (1,2) and end (3) and in saddle type.Along the arbitrary direction in any one main surface to determine the first warped shapes of glass plate (10) when, first warped shapes formed curve in convex form bend.Along the orthogonal direction orthogonal with a direction to determine the second warped shapes of glass plate (10) when, second warped shapes formed the concave shape of curve bend.
Description
Technical field
The present invention relates to glass plate.
Background technology
In the past, (example was widely used in the various uses such as the display members such as the aperture members such as window, display in glass plate
Such as, with reference to patent document 1).Here, in recent years, the chemistry implemented to glass plate for the purpose of function assigns or quality improves is strong
The situation increase of change, coating etc..Industrially, though even if so that the temperature below the strain point of glass applies load and deforms
It will not remain, but even be sufficiently below the temperature of the strain point of glass, be produced due to external stress or by the heterogeneity of temperature
Raw internal stress, it can also produce the residual deformation that can not ignore in the quality of product.Moreover, heat treatment step is not only, and
And before heat treatment after or more than 100 DEG C at a temperature of in the transmission of glass because load acts on glass, can also produce sometimes
Change shape.
Such deformation is particularly significant in the case where the thickness of slab of glass is relatively thin.
Citation
Patent document
Patent document 1：No. 5614350 publication of Japan's patent
Non-patent literature
Non-patent literature 1：The encyclopedia of glass, make flower Ji husband and compile, towards storehouse bookstore (2007)
The content of the invention
The invention problem to be solved
In view of foregoing the problem of point in the past, though it is an object of the invention to provide a kind of thickness of slab is relatively thin, apply load,
The also small glass plate of deflection caused by thermal distribution.
The present inventors in view of it is above-mentioned in the past the problem of point and carefully studied as a result, being conceived to glass plate
Shape.And, it was found that the glass plate manufactured in the past generally have dome-shaped (dish) shape, such case as make due to
Load, thermal distribution and the deflection such as caused warpage or flexure increase the main reason for.Also, the present inventors enter one
It is to be found that the situation that aforementioned problems are can solve the problem that by following glass plate to walk the result carefully discussed, so as to complete this hair
It is bright.
For solving the scheme of problem
The glass plate of the present invention is the glass plate for including relative two main surface and end, along main table any one described
When an arbitrary direction in face is to determine the first warped shapes of the glass plate, the curve that first warped shapes are formed is in convex
Bend to shape, also, the second warped shapes of the glass plate are being determined to orthogonal orthogonal direction along with one
When, bend the concave shape of curve of second warped shapes formation.
As a form of the glass substrate of the present invention, for example, carrying out two to the curve that first warped shapes are formed
Formula when secondary approximate is by y=a1x2+b1x+c1Represent (a1、b1、c1For arbitrary value), second warped shapes are formed
Formula during curve progress second approximation is by y=a2x2+b2x+c2Represent (a2、b2、c2For arbitrary value), by by a1And a2In
The small value of absolute value divided by the big value of absolute value obtained from style characteristic index Rs minimum value be that x is institute below -0.15
The arbitrary position in the glass plate on a direction or the orthogonal direction is stated, y is the glass plate at the arbitrary position x
The position of short transverse.
As a form of the glass substrate of the present invention, for example, the orthogonal direction is defined as, institute parallel with stripe direction
State a direction and be defined as the direction orthogonal with the stripe direction.
As a form of the glass plate of the present invention, for example, thickness is below 1.5mm.
As a form of the glass plate of the present invention, for example, glass plate is manufactured by float glass process.As a result, in glass
Between the face of one side of plate and the face of relative the opposing party, the different feature of the concentration of tin is shown.
The glass plate of the present invention is the glass plate for possessing interarea and the back side relative with the interarea, wherein, by described in
When the glass plate that glass plate possesses the rectangle of long side and the short side orthogonal with the long side as top view is cut out, from the length
In the case that avris is observed, the glass plate is position of the position than the neighboring area of the interarea of the middle section of the interarea
The concave shape set low, in the case of from the short brink, the glass plate is the middle section of the interarea
The position convex form higher than the position of the neighboring area of the interarea.
Invention effect
According to the present invention, even if thickness of slab is relatively thin, also can will apply load, thermal distribution caused by deflection suppression
It is made smaller.
Brief description of the drawings
Fig. 1 is the concept map for representing three kinds of glass plates, and Fig. 1 (a) is the glass plate of the parabolically shape of shape, and Fig. 1 (b) is
In the glass plate of semicylindrical shape, Fig. 1 (c) is the glass plate in the shape of saddle type.
Fig. 2 is the contour map of the glass plate shown in Fig. 1 (a), and Fig. 2 (a) is the top view of contour map, and Fig. 2 (b) is
The stereogram of high line chart.
Fig. 3 is the coordinate diagram of formula obtained from representing the shape on the surface of Fig. 2 glass plate carrying out second approximation.
Fig. 4 is the contour map of the glass plate shown in Fig. 1 (b), and Fig. 4 (a) is the top view of contour map, and Fig. 4 (b) is
The stereogram of high line chart.
Fig. 5 is the coordinate diagram of formula obtained from representing to carry out second approximation to the shape on the surface of Fig. 4 glass plate.
Fig. 6 is the contour map of the glass plate shown in Fig. 1 (c), and Fig. 6 (a) is the top view of contour map, and Fig. 6 (b) is
The stereogram of high line chart.
Fig. 7 is the coordinate diagram of formula obtained from representing to carry out second approximation to the shape on the surface of Fig. 6 glass plate.
Fig. 8 is the concept map for the horizontal warpage analyzer for determining dead weight deflection, and Fig. 8 (a) is side view, and Fig. 8 (b) is to bow
View.
Fig. 9 be represent glass plate initial stage amount of warpage and deflection measurement result coordinate diagram.
Embodiment
Hereinafter, referring to the drawings, the embodiment of the glass plate of the present invention is described in detail.Fig. 1 be the inventors have found that glass
The Shape Classification of glass plate.When observing in detail, glass-pane shaping is few for the situation of complete flat shape, if being generally shaped to form
The pattern of shape.
Fig. 1 (a) is in the plane of glass plate, and central area bloats compared with neighboring area and turns into the shape of protruding state
The glass plate of shape, parabolically shape as shape, dome-shaped, dish-shaped or bowl-type etc..Fig. 1 (b) is centre line zone compared to week
Border area domain bloats and turns into the glass plate of the shape of protruding state, in shape as semi-cylindrical shaped, D-shaped, semi-cylindrical etc..Figure
1 (c) is the glass plate in shape as the saddle to stick on a horse.
The inventors have found that the glass plate of conventional manufacture it is most of be the shape shown in Fig. 1 (a) or Fig. 1 (b) glass
The situation of glass plate, and successfully been manufactured the glass plate of the shape shown in Fig. 1 (c).It is respective on Fig. 1 (a), (b), (c)
Shape, it is described in detail using Fig. 2~Fig. 7.
Fig. 2 is the contour map of the glass plate shown in Fig. 1 (a), and the shape is referred to as " parabola shaped (parabolic
Shape) ", in the similar shape of the curved surface of the part with parabola antenna.If another view, then dome is analogous to
Shape, similar to by dish or bowl upset obtained from curved surface shape, convex surface is in the convex form of top.The one of contour map
The plane that plane corresponds in glass plate, the height of contour map correspond to the height (position of thickness direction) of glass plate.
As research glass plate shape method, exist research glass plate orthogonal two section (section 1,
Section 2) respective cross sectional shape method.When carrying out second approximation to the cross sectional shape, by general expression：Y=ax2+bx+c
Represent.Here, x is the arbitrary position in the glass plate on section 1 or section 2, y is the glass plate at the arbitrary position x
Short transverse (thickness direction) position.Y corresponds to the value of so-called warpage.A, b, c are appoint corresponding with the shape of glass plate
The value of meaning.
The stripe direction that the direction of the material flowing of glass plate is parallel when section 2 in two sections is along with manufacturing,
And in the glass plate of the rectangle cut out convex surface upward in the case of by the section of highest position, striped side can be obtained
To cross sectional shape.On the other hand, section 1 is by the highest position and the section orthogonal with section 2, can be obtained and striped
The cross sectional shape of the orthogonal orthogonal direction in direction.
As shown in Fig. 3 coordinate diagram, the result of the measure based on optical interference formula analyzer is understood, in the glass plate of this example
In, two cross sectional shapes are represented by following formula.In figure 3, transverse axis x, longitudinal axis y, the unit of the longitudinal axis is micron (μm),
The unit of transverse axis is millimeter (mm).Measure is that the glass plate being made up of for plane 60mm × 60mm square is carried out, will just
The one side of square plane is determined (Fig. 5, Fig. 7 described later are also identical) as x reference position (x=0).
Section 1：Y=-0.0091x2+0.546x-3.2643
Section 2：Y=-0.0073x2+0.4352x-1.2758
Here, on the shape in section 1 formula and section 2 shape formula quadratic term x2Coefficient a, pass through by
The value of the big side of the value divided by absolute value of the small side of absolute value in coefficient a and can obtain representing the characteristic of glass plate
Style characteristic index Rs.For example it is assumed that carry out two for the shape (cross sectional shape on above-mentioned orthogonal direction) of pair cross-section 1
Formula when secondary approximate is by y=a1x2+b1x+c1(a1、b1、c1For arbitrary value) represent, shape (the above-mentioned striped of pair cross-section 2
Cross sectional shape on direction) formula when having carried out second approximation is by y=a2x2+b2x+c2(a2、b2、c2For arbitrary value) table
Show.| a1|>|a2| when, turn into Rs=a2/a1, | a1|<|a2| when, turn into Rs=a1/a2。
As described below, quadratic term x can be used2Coefficient a (a1And a2) and the shape obtained according to coefficient a it is special
Values of the property index Rs as the species for the shape for judging glass plate.
In Fig. 2, Fig. 3 example, Rs=-0.0073/-0.0091 ≒ 0.81.Also, it is in style characteristic index Rs
When more than 0.15, the shape of the glass plate is classified as bowl-type.
Fig. 4 is the contour map of the glass plate shown in Fig. 1 (b), and the shape is referred to as " semi-cylindrical shaped (semi-
cylindrical shape)”.It is also similar to that D-shaped, placing in the shape of the semicolumn on plate.
Understood as shown in Fig. 5 coordinate diagram, in the glass plate of this example, two cross sectional shapes are represented by following formula.
Section 1：Y=-0.0038x2+0.2227x-2.2679
Section 2：Y=0.0005x2-0.0405x+1.6619
In this example embodiment, Rs=0.0005/-0.0038 ≒ -0.14.Also, it is in -0.15 in style characteristic index Rs<
Rs<In the case of+0.15 scope, the shape of the glass plate is classified as semi-cylindrical.
Fig. 6 is the contour map of the glass plate 10 shown in Fig. 1 (c), and the shape is referred to as " saddle type (saddle shape) ".Glass
Glass plate 10 is in the shape of the saddle to stick on a horse.As the meaning of more typically property, glass plate 10 is in via arbitrarily putting to not
There is the face of opposite curvature to carry out compound and the anticlastic surface (anticlastic surface) of formation shape in same direction
Shape.
Understood as shown in Fig. 7 coordinate diagram, in the glass plate 10 of this example, two cross sectional shapes are by following formula table
Show.
Section 1：Y=-0.0036x2+0.217x-2.8451
Section 2：Y=0.0018x2-0.1129x+2.3747
In this embodiment, Rs=0.0018/-0.0036 ≒ -0.49.Also, style characteristic index Rs minimum value for-
When less than 0.15, the shape of the glass plate 10 is classified as saddle type.It was found from Fig. 7 coordinate diagram, in the shape of the saddle type, cut
Face 1 turns into convex form in the opposite direction with section 2 on the thickness direction of glass plate 10.Each shape and style characteristic index
Rs relation is summarised in following table.
【Table 1】
Table 1
| Bowl-type | Semi-cylindrical | Saddle type |
| Rs≥0.15 | - 0.15 ＜ Rs ＜ 0.15 | Rs≤-0.15 |
Fig. 1 (c), Fig. 6, Fig. 7 glass plate 10 are in the shape of saddle type, explain the shape.Such as Fig. 1 (c), Fig. 6 institutes
Show, glass plate 10 includes interarea (main surface) 1 and the back side relative with the interarea (main surface) 2 and end 3, the end 3 are deposited
Side when being between interarea 1 and the back side 2 (two also referred to as relative main surfaces 1,2) and forming top view glass plate 10.
Also, as shown in Fig. 1 (c), Fig. 6, determined in an arbitrary direction for the inside along any one main surface 1,2
During the first warped shapes of glass plate 10, the curve that the first warped shapes are formed is bent in convex form.For example, as shown in fig. 7,
On the direction along section 1, represent that the coordinate diagram for the curve that first shape is formed is bent in convex form.In addition, on edge
When the orthogonal direction orthogonal with a direction to determine the second warped shapes of glass plate 10, the song of the second warped shapes formation
Bend the concave shape of line.For example, as shown in fig. 7, on the orthogonal direction along the section 2 orthogonal with section 1, second is represented
The coordinate diagram for the curve that shape is formed is in convex form, bent i.e. concave shape to downside.As a result, the entirety of glass plate 10 is in
The shape of saddle type.
In this case, the formula during curve progress second approximation formed to the first warped shapes is by y=a1x2+b1x+
c1Represent (a1、b1、c1For arbitrary value), formula when carrying out second approximation to the curve that the second warped shapes are formed is by y=
a2x2+b2x+c2Represent (a2、b2、c2For arbitrary value).Also, in glass plate 10, by by a1And a2In absolute value it is small
Style characteristic index Rs minimum value is below -0.15 obtained from value divided by the big value of absolute value.
It should be noted that above-mentioned orthogonal direction is defined as parallel with stripe direction, a direction is defined as and bar
The orthogonal direction in line direction.
In addition, with the rectangle for possessing long side 4 and the short side 5 orthogonal with long side 4 using glass plate 10 as top view
Glass plate situation about cutting out.In this case, along the direction of short side 5, i.e., from the side of long side 4 (Fig. 6 (b) arrow A directions)
During observation, on the direction of long side 4, in the position of the middle section of interarea 1 spill lower than the position of the neighboring area of interarea 1
Shape.Moreover, along the direction of long side 4, i.e., from the side of short side 5 (Fig. 6 (b) arrow B directions) when, on the direction of short side 5, be
The position of the middle section of interarea 1 convex form higher than the position of the neighboring area of interarea 1.
It is the reasons why on manufacturing glass plate of different shapes as described above, described below.For example, existing includes companion
With the sheet manufacturing process of the process of the heat treatment of temperature more than strain point.In the process, near strain point
As defined in being produced during temperature in the table back of the body of glass planar in the case of temperature difference, the amount of contraction of table back of the body during cooling afterwards is not
Together, the tendency of the glass plate for the shape for producing Fig. 2~Fig. 5 (bowl-type and semi-cylindrical) thus be present.Moreover, for example straining
Near point during following heat treatment step, the more heat (temperature of central area is accumulated in the central area of the plane of glass plate
Degree is higher).Generally, in cooling, there is the tendency from neighboring area cooling in glass plate.Therefore, central area accumulation have compared with
In the case of more heats, in cooling, central area will be relatively slowly cools down, the cooling of neighboring area compared to neighboring area
In advance, room temperature is relatively early reached relative to central area, therefore contraction afterwards accelerates.In this process, as bowl that
Any one of sample central area or neighboring area are via convex shape, the possibility rise of convex deformation residual.Or script
The possibility rise that convex shape is encouraged.Thus, easy to manufacture is caused to go out the result of the glass plate of Fig. 2~Fig. 5 shape.
On the other hand, the deformation direction on the direction near strain point (such as width of plane) is attached with strain point
The temperature difference of the table back of the body of near glass planar be cause, from the table back of the body afterwards shrink it is poor caused by the different situation of warp direction
Under, the situation of the shape (saddle type) for producing Fig. 6, Fig. 7 can be produced.Moreover, heat treatment following for example near strain point
During the cooling of process, by delaying the cooling of neighboring area, the action relatively shunk relative to central area is slack-off, via
When neighboring area is relative to state more than central area relatively volume, turn into the saddle type shape for the flexure for producing neighboring area
State.As a result, the shape of saddle type easily remains.It should be noted that the method being controlled to these shapes is more, pass through
The situation that method beyond shown here obtains preferable saddle shapes can also be as the work in the accommodation of the present invention
With.
As it was previously stated, generally in cooling, there is the tendency from neighboring area cooling in glass plate, in this case,
For the plate of saddle type cooling when be deformed into generate process in opposite direction with saddle type, turn into the side being modified to deformation
To, therefore in the absorption region of the degree in the size based on saddle type, it is flat shape that deformation, which is difficult to remain or deforms residual,.
In addition, even for the deformation for not being Temperature Distribution, the characteristic of saddle type is also that the volume of plate is remaining in neighboring area,
Therefore be the situation compressed, so the deformation (such as deformation as bowl-type) in the direction for causing the flexure compressed and
Show resistance.
Thus, by manufacture be not bowl-type or semi-cylindrical shape but the glass plate of saddle type, for obtained glass
Plate, can will apply load, thermal distribution caused by deflection suppress smaller, preferable glass plate can be obtained.Especially
It is easily deformed in the case of the thickness of thin of glass plate, thus effect as playing (such as thickness be 1.5mm with
Under).Certainly, the thickness of glass plate of the invention is not particularly limited.Bending stiffness (the bending degree of difficulty of material：Young's modulus
× cross sectional moment of inertia) it is cube proportional to thickness of slab, the thickness of glass plate is thinner, then the warpage that glass plate is more easily deformed turns into
Problem, therefore the thickness of glass plate is thinner, then effect of the invention is more beneficial.Specifically, it is 0.7mm in the thickness of glass plate
Below, it is beneficial when below 0.45mm, below 0.4mm, below 0.3mm, 0.2mm are such as the following.On the other hand, if it is considered that using glass
Practicality when glass plate is as cover cover glass, then the thickness of glass plate is preferably more than 0.05mm.
Next, the method that explanation evaluates the deflection of above-mentioned glass plate.First, it is glass plate is placed longitudinally, do not having
Have in the state of being deformed because of deadweight, using generally longitudinal placement warpage analyzer, at the beginning of determining warpage inherently i.e.
Phase amount of warpage.Next, determine the deflection as caused by deadweight using the horizontal warpage analyzer 20 shown in Fig. 8.Fig. 8's
In horizontal warpage analyzer 20, glass plate 10 is configured via pad 22 on platform 21, using from laser beam emitting device 30
Deadweight additional hours total deformations of laser L when addition of deformation induced by gravity to determine.Last basis (deadweight additional hours total deformation
Amount-initial stage amount of warpage) determine original deflection (warpage).Pad 22 can be used such as internal diameter 6.8mm, external diameter 12.7mm,
Thickness 1mm pad, but be not particularly limited.
Fig. 9 is the coordinate diagram for comparing the deflection of bowl-type, semi-cylindrical, the respective glass plate of saddle type.Transverse axis x
It is that longitudinal axis y is stuck up using the horizontal shown in Fig. 8 using the amount of warpage at initial stage during placed longitudinally warpage analyzer measure (not shown)
Deflection (deadweight additional hours total deformation-initial stage amount of warpage) during bent analyzer measure, unit for μm.Show in following tables
Go out specific value.
【Table 2】
Table 2
According to above-mentioned evaluation result it is understood that saddle type is compared with bowl-type and semi-cylindrical, even if initial stage, amount of warpage was larger,
Deflection is also small.That is, in the case of saddle type, initial stage, amount of warpage was bigger, can more suppress deflection (warpage).Especially for example
In this sampling size, it is known that when amount of warpage is more than 10 μm in the early stage, if saddle type, then the suppression of deflection becomes strong.
As described in following, glass plate of the invention is preferably manufactured by float forming method, but manufacture method is without spy
Do not limit.Glass plate can also be shaped by drawing method, rolling process, upper daraf(reciprocal of farad) etc. under glass tube down-drawing, overflow downdraw, discharge orifice.And
And the composition of glass is also not particularly limited.Experiment as escribed above is carried out by the glass plate of aluminosilicate, but glass
Composition is not defined to specifically form.
The size of the glass plate used in above-mentioned experiment is cut out from the plate of so-called G5 sizes (1300mm × 1100mm)
For the size of 10cm × 10cm square (square), but size is not particularly limited.It should be noted that glass plate
The all 0.44mm of thickness.
Hereinafter, the method for the glass of the manufacture present invention is illustrated.
As the method for the glass of the manufacture present invention, it can enumerate and for example various frits are concocted in right amount, add
After heat fusing, homogenized by deaeration or stirring etc., tabular be configured to by the known manufacturing process such as float glass process,
After slow cooling, desired size is cut into, the method implemented attrition process and manufactured.Pass through the glass plate of float forming
Because the face of a side connects with molten tin, therefore the concentration of the tin in the face of the concentration of the tin in the face with a side and the opposing party is not
Same feature.
Now, for example, using float glass process and in the case of being configured to tabular (stripe direction of the section 2 along float glass process), example
Such as, by using following either method, glass plate of the invention can be manufactured.
One method is the method using the diameter in the center lehr rollers thinner than two side ends.Also, in the direction of the width with
Upward surface side turns into the mode that concavity is semi-cylindrical form and guides glass plate.Under the temperature regime higher than strain point, it will include
The temperature of bottom including bathroom be kept as than top it is high, and the temperature of the lower surface on the thickness direction of glass plate be kept as compared with
It is high.The temperature difference as a result, produce the power of upward surface side protrusion as glass plate cools down, produce in the flowing direction upward
The shape of surface side protrusion.On the other hand, along the width of previously illustrated and upwards surface side depression semi-cylindrical form pass through
Offset and decay with the interaction deformed as caused by the temperature difference, and by being adjusted to make concavity to width
Upper face side remaining degree and produce the glass plate of saddle type.
In addition, in float glass process, glass plate is shaped with continuous belt shape.In the cooling of glass tape if band width
Inhomogenous Temperature Distribution be present on degree direction or thickness direction, then the glass that every cuts out from band produces warpage.Especially
In thin glass plate, the glass wall thickness of belt edge is relatively thickening, and the temperature in cooling is raised in edge part and dropped in central portion
It is low.The glass tape near strain point is have passed through with the Temperature Distribution turns into dome-shaped (dish) after severance.On the other hand, pass through
The edge part thicker to wall thickness is cooled down and central portion is incubated and can produce the glass plate of saddle type.
Another method is that guiding into the semi-cylindrical form of the upward surface side protrusion of width, is straining in general float glass process
Point the above temperature province in, the temperature of upper face side is kept as it is higher than the temperature of following side, thus, it is possible to produce saddle type
Glass plate.
The glass that the present invention uses is not particularly limited, but can enumerate for example typically by soda lime glass, aluminium
The glass plate that silicate glass, borate glass, lithium alumina silicate glass, borosilicate glass are formed.The composition of glass it is detailed
Fine texture is also not particularly limited.
It should be noted that the present invention is not defined to above-mentioned embodiment, it can suitably be deformed, be improved.
In addition, the material of each inscape in above-mentioned embodiment, shape, size, numerical value, form, number, configuration position etc. are only
The present invention can be realized, can be any, it is not limited.
The application based on April 10th, 2015 Japanese patent application laid filed an application be willing to 2015-080938, and by its
Content is incorporated herein as reference.
Industrial applicibility
The glass plate of the present invention can widely use in the various uses such as the display members such as the aperture members such as window, display.
Label declaration
1 interarea (main surface)
2 back sides (main surface)
3 ends
4 long sides
5 short sides
10 glass plates
20 horizontal warpage analyzers
21 platforms
22 pads
30 laser beam emitting devices
Claims (6)
1. a kind of glass plate, including relative two main surfaces and end, wherein,
Along the arbitrary direction any one described in main surface to determine the first warped shapes of the glass plate when, this first
The curve that warped shapes are formed is bent in convex form, also,
Along with one to orthogonal orthogonal direction to determine the second warped shapes of the glass plate when, second warpage
Bend the concave shape of curve that shape is formed.
2. glass plate according to claim 1, wherein,
Formula during the curve progress second approximation formed to first warped shapes is by y=a1x2+b1x+c1Represent (a1、b1、
c1For arbitrary value),
Formula during the curve progress second approximation formed to second warped shapes is by y=a2x2+b2x+c2Represent (a2、b2、
c2For arbitrary value),
By by a1And a2In the big value of the small value of absolute value divided by absolute value obtained from style characteristic index Rs minimum value
For below -0.15,
X be one to or the orthogonal direction on the glass plate in arbitrary position, y is at the arbitrary position x
Glass plate short transverse position.
3. glass plate according to claim 2, wherein,
The orthogonal direction is defined as parallel with stripe direction, and one is to being defined as the side orthogonal with the stripe direction
To.
4. according to glass plate according to any one of claims 1 to 3, wherein,
The thickness of the glass plate is below 1.5mm.
5. according to glass plate according to any one of claims 1 to 4, wherein,
Between the face of a side of the glass plate and the face of relative the opposing party, the concentration of tin is different.
6. a kind of glass plate, possess interarea and the back side relative with the interarea, wherein,
Cut out in the glass plate for the rectangle that the glass plate is possessed into long side and the short side orthogonal with the long side as top view
When,
In the case of from the long side, the glass plate is the position of the middle section of the interarea than the interarea
Neighboring area the low concave shape in position,
In the case of from the short brink, the glass plate is described in the position ratio of the middle section of the interarea
The high convex form in the position of the neighboring area of interarea.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015080938 | 2015-04-10 | ||
| JP2015-080938 | 2015-04-10 | ||
| PCT/JP2016/061180 WO2016163373A1 (en) | 2015-04-10 | 2016-04-05 | Glass plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107428587A true CN107428587A (en) | 2017-12-01 |
Family
ID=57071938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680020707.6A Pending CN107428587A (en) | 2015-04-10 | 2016-04-05 | Glass plate |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPWO2016163373A1 (en) |
| CN (1) | CN107428587A (en) |
| TW (1) | TW201700421A (en) |
| WO (1) | WO2016163373A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI756366B (en) * | 2017-02-24 | 2022-03-01 | 美商康寧公司 | Dome or bowl shaped glass and method of fabricating dome or bowl shaped glass |
Citations (4)
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|---|---|---|---|---|
| GB2217036A (en) * | 1988-03-11 | 1989-10-18 | Rosser Roy J | Saddle-toriod mirrors. |
| JP2004145674A (en) * | 2002-10-25 | 2004-05-20 | Nippon Sheet Glass Co Ltd | Method for designing mold surface of press bending form block |
| CN102423777A (en) * | 2011-11-19 | 2012-04-25 | 吉林大学 | Curved surface rolling method |
| CN202808599U (en) * | 2011-08-24 | 2013-03-20 | 康宁股份有限公司 | Device for representing characteristics of glass sheet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61197434A (en) * | 1985-02-26 | 1986-09-01 | Asahi Glass Co Ltd | Method of bending glass plate |
| CA1324257C (en) * | 1987-11-23 | 1993-11-16 | George A. Koss | Method and apparatus for forming a glass sheet |
| JP2000247663A (en) * | 1999-03-02 | 2000-09-12 | Nippon Sheet Glass Co Ltd | Bed structure for floating sheet glass |
-
2016
- 2016-04-05 WO PCT/JP2016/061180 patent/WO2016163373A1/en active Application Filing
- 2016-04-05 JP JP2017511000A patent/JPWO2016163373A1/en active Pending
- 2016-04-05 CN CN201680020707.6A patent/CN107428587A/en active Pending
- 2016-04-08 TW TW105111133A patent/TW201700421A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217036A (en) * | 1988-03-11 | 1989-10-18 | Rosser Roy J | Saddle-toriod mirrors. |
| JP2004145674A (en) * | 2002-10-25 | 2004-05-20 | Nippon Sheet Glass Co Ltd | Method for designing mold surface of press bending form block |
| CN202808599U (en) * | 2011-08-24 | 2013-03-20 | 康宁股份有限公司 | Device for representing characteristics of glass sheet |
| CN102423777A (en) * | 2011-11-19 | 2012-04-25 | 吉林大学 | Curved surface rolling method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201700421A (en) | 2017-01-01 |
| WO2016163373A1 (en) | 2016-10-13 |
| JPWO2016163373A1 (en) | 2018-02-01 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Tokyo, Japan Applicant after: AGC Corporation Address before: Tokyo, Japan Applicant before: Asahi Glass Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |