JP3308447B2 - Heat-strengthened glass sheet and method for finishing edge portion thereof - Google Patents
Heat-strengthened glass sheet and method for finishing edge portion thereofInfo
- Publication number
- JP3308447B2 JP3308447B2 JP08956696A JP8956696A JP3308447B2 JP 3308447 B2 JP3308447 B2 JP 3308447B2 JP 08956696 A JP08956696 A JP 08956696A JP 8956696 A JP8956696 A JP 8956696A JP 3308447 B2 JP3308447 B2 JP 3308447B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- heat
- sheet
- edge portion
- polishing
- 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 - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば、吊り金具
を使用しない製造方法によって形成してあり、防火戸や
防火窓に用いることができる熱強化板ガラス及びその端
縁部分の仕上げ方法に関し、さらに詳しくは、全面にわ
たって熱強化処理を施してある熱強化板ガラス及びその
端縁部分の仕上げ方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-strengthened glass sheet which is formed by, for example, a manufacturing method that does not use a hanging metal and can be used for a fire door or a fire window, and a method of finishing an edge portion thereof. More specifically, the present invention relates to a heat-strengthened glass sheet that has been heat-strengthened over its entire surface and a method of finishing an edge portion thereof.
【０００２】[0002]
【従来の技術】板ガラスを防火戸や防火窓に用いる場
合、板ガラスの熱割れ現象（熱を受けて板ガラスの中央
部に発生した熱膨張によって、窓枠等に支持された板ガ
ラスエッジ部分に引張応力が作用し、その引張応力が、
板ガラスに備わったエッジ強度を超えることによって割
れを生じる）を防止するために、ガラスにエッジ強度が
高いことが必要である。2. Description of the Related Art When a glass sheet is used for a fire door or a fire window, a thermal cracking phenomenon of the glass sheet (a tensile stress is applied to an edge portion of the glass sheet supported by a window frame or the like due to thermal expansion generated in a central portion of the glass sheet due to heat. Acts, and its tensile stress becomes
In order to prevent the occurrence of cracks by exceeding the edge strength of the glass sheet, the glass must have a high edge strength.
【０００３】防火用の板ガラスとしては、網入りガラス
や、含水珪酸アルカリからなる中間層を挟み込んだ積層
ガラスが知られているが、前者は、内挿の網が視界を遮
り透視性を損なう危険性があり、後者は、前記中間層が
熱変化で発泡して不透明になり透明性を損なう危険性が
ある。これらの問題点が無いものとして、ソーダ石灰系
のガラスを熱強化処理したものが挙げられる。[0003] As a sheet glass for fire prevention, a glass with a net or a laminated glass with an intermediate layer made of a hydrated alkali silicate is known, but in the former, there is a danger that an interpolated net blocks visibility and impairs transparency. In the latter case, there is a danger that the intermediate layer foams due to heat change and becomes opaque, thereby impairing transparency. As a material which does not have these problems, a soda-lime glass which has been subjected to a heat strengthening treatment can be given.
【０００４】熱強化処理は、ガラスの軟化点（７２０〜
７３０℃）をかなり超える温度域（約７６０℃）で板ガ
ラスを加熱し、連続する空気冷却部分において、背圧９
５０ｍｍＡｑと非常に高い圧力で冷却空気を吹き付けて
実施される方法がある。但し、この様な板ガラスの熱強
化処理に伴っては、所定のエッジ強度を付与することは
できるものの、上述のとおりガラス軟化点を超える高温
域で加熱した板ガラスに強圧の空気を吹き付けるため
に、ガラス表面の平坦性に欠けたり、反りを生じて、反
射映像上の不具合を生じる危険性がある。[0004] The heat strengthening treatment is carried out at a softening point of the glass (720 to 720).
730.degree. C.), the sheet glass is heated in a temperature range (approximately 760.degree. C.) and a back pressure of 9 in a continuous air cooling section.
There is a method implemented by blowing cooling air at a very high pressure of 50 mmAq. However, with such a heat strengthening treatment of the sheet glass, although it is possible to impart a predetermined edge strength, in order to blow high pressure air to the sheet glass heated in a high temperature region exceeding the glass softening point as described above, There is a risk that the flatness of the glass surface may be lacking or warping may occur, causing a problem on the reflected image.
【０００５】従来、この種の熱強化板ガラスとしては、
板ガラスの厚み方向での中間部ほど、前記板ガラスの面
方向の外方に突出する曲面形状の曲面縁部に形成された
ものがあった。[0005] Conventionally, this type of heat-strengthened glass sheet includes:
Some intermediate portions in the thickness direction of the sheet glass were formed at the curved surface edge portions having a curved shape protruding outward in the surface direction of the sheet glass.
【０００６】[0006]
【発明が解決しようとする課題】上述した従来の熱強化
板ガラスによれば、防火戸や防火窓として使用できるよ
うにするためには、前述の熱強化処理〔ガラスの軟化点
（７２０〜７３０℃）をかなり超える温度域（約７６０
℃）で板ガラスを加熱し、連続する空気冷却部分におい
て、背圧９５０ｍｍＡｑと非常に高い圧力で冷却空気を
吹き付けて実施される〕を実施する必要があり、その結
果、前述の熱強化処理による不具合（ガラス表面の平坦
性に欠けたり、反りを生じて、反射映像上に障害とな
る）が生じるという問題点がある。According to the above-mentioned conventional heat-strengthened glazing, the above-mentioned heat-strengthening treatment (the softening point of the glass (720-730 ° C.) is required in order to be able to be used as a fire door or a fire window. ) (About 760)
° C), and in a continuous air cooling part, cooling air is blown at a very high back pressure of 950 mmAq.], And as a result, there is a problem due to the above-mentioned heat strengthening treatment. (The glass surface lacks flatness or warps, which causes an obstacle on the reflected image).
【０００７】また、この問題点（表面不平坦・反り発
生）を解消するために、加熱温度や吹き付け空気の背圧
を従来の熱強化処理の値よりも低下させた熱強化処理
（以下、単に低熱強化処理という）を実施すると、充分
なエッジ強度を確保できなくなり、火災や防火試験等の
熱を受けることによって板ガラスのエッジ部分、特に、
研磨してある角部に熱歪み応力が集中する。その場合、
特に板ガラスの端面部が面方向の外方に突出する曲面形
状の場合は、板ガラスの施工時に板ガラス自体の自重に
よる施工応力が端面部の先端（曲面形状の最も外方に突
出した部分）に加わって破壊し易くなるという新たな問
題点が発生する。Further, in order to solve this problem (surface unevenness / warpage generation), a heat strengthening treatment (hereinafter simply referred to as simply “heat strengthening treatment” in which the heating temperature and the back pressure of the blowing air are made lower than those of the conventional heat strengthening treatment. When low heat strengthening treatment is performed, sufficient edge strength cannot be secured, and the edges of the sheet glass, especially,
Thermal strain stress concentrates on the polished corners. In that case,
In particular, in the case of a curved surface shape in which the end face of the sheet glass projects outward in the surface direction, the working stress due to the weight of the sheet glass itself is applied to the tip of the end face (the most outwardly projecting part of the curved shape) during the sheet glass application. A new problem arises in that it is easily broken.
【０００８】従って、本発明の目的は、上記問題点を解
消し、熱強化処理の度合いを緩和しても所定の板ガラス
のエッジ強度を確保できる熱強化板ガラス及びその端縁
部分の仕上げ方法を提供するところにある。Accordingly, an object of the present invention is to provide a heat-strengthened sheet glass capable of securing the edge strength of a predetermined sheet glass even if the degree of the heat-strengthening treatment is alleviated, and a method for finishing the edge portion thereof. Where you do it.
【０００９】[0009]
〔構成〕 本発明の第一は、全面にわたって熱強化処理を施してあ
る板ガラスの端面部が、その長手方向に沿った研磨方向
で研磨されて平坦状に形成されており、その表面最大凹
凸が０．０４ｍｍ以下に仕上げられていると共に、前記
端面部と前記板ガラス表裏の平面部との境部が、表面最
大凹凸が０．００７ｍｍ以下に仕上げられており、前記
熱強化処理による表面圧縮応力が１７〜２５ｋｇｆ／ｍ
ｍ 2 であることを特徴構成としている。[Configuration] The first aspect of the present invention is that an end surface of a sheet glass that has been subjected to a thermal strengthening process over the entire surface is polished in a polishing direction along its longitudinal direction and is formed in a flat shape, and the surface has maximum irregularities. 0.04mm with are finished below the boundary portion between the end face portion and the plate glass front and back of the flat portion, the surface maximum unevenness has finished below 0.007 mm, the
Surface compressive stress by heat strengthening treatment is 17-25 kgf / m
It is characterized configured to be a m 2.
【００１０】[0010]
【００１１】また、本発明の第二は、全面にわたって熱
強化処理を施してある熱強化板ガラスの端面部を、研磨
方向が端面部の長手方向に沿う研磨によって平坦状でそ
の表面最大凹凸が０．０４ｍｍ以下となるように形成す
る研磨工程を経て、前記端面部と前記板ガラス表裏の平
面部との境部を、表面最大凹凸が０．００７ｍｍ以下と
なるように加工仕上げ工程を実施し、前記熱強化処理に
よる表面圧縮応力が１７〜２５ｋｇｆ／ｍｍ 2 であるこ
とを特徴構成としている。A second aspect of the present invention is that the end face of the heat-strengthened glass sheet, which has been subjected to the heat-strengthening process over its entire surface, is flat by polishing along the longitudinal direction of the end face and has a maximum surface unevenness of zero. .04mm through a polishing process of forming such become less, the boundary portion between the end face portion and the plate glass front and back of the flat portion, carried out finishing steps as maximum surface irregularity becomes less 0.007 mm, the For heat strengthening treatment
Surface compressive stress due is characterized configure this <br/> and a 17~25kgf / mm 2.
【００１２】[0012]
【００１３】〔作用〕 一般的に、板ガラス内に生じる内部応力は、稜部に集中
し易い性質があり、本発明の第一の特徴構成によれば、
全面にわたって熱強化処理を施してある板ガラスの端面
部が、その長手方向に沿った研磨方向で研磨されて平坦
状でその表面最大凹凸が０．０４ｍｍ以下に仕上げられ
ていると共に、前記端面部と前記板ガラス表裏の平面部
との境部が、表面最大凹凸が０．００７ｍｍ以下に仕上
げられており、前記熱強化処理による表面圧縮応力が１
７〜２５ｋｇｆ／ｍｍ 2 であるから、研磨に伴う筋（キ
ズ）は、研磨方向と同様に端面部の長手方向に沿って形
成され、このため板ガラスの板面に沿って作用する熱破
壊力等の集中を回避し易くなる。そして、端縁部分に応
力が集中し難く、また板ガラス施工時の板ガラス自体の
自重による施工応力が端縁部分の先端に加わり難い熱強
化板ガラスとすることができる。[Operation] In general, the internal stress generated in the sheet glass tends to concentrate on the ridge, and according to the first characteristic configuration of the present invention,
The end face portion of the sheet glass that has been subjected to the heat strengthening treatment over the entire surface is polished in a polishing direction along its longitudinal direction to be flat and has a maximum surface roughness of 0.04 mm or less. The boundary between the flat surface of the glass plate and the flat surface is finished so that the maximum surface unevenness is 0.007 mm or less, and the surface compressive stress due to the heat strengthening treatment is 1 mm.
Since it is 7 to 25 kgf / mm 2 , a streak (scratch) due to polishing is formed along the longitudinal direction of the end face in the same manner as the polishing direction. It is easy to avoid concentration. In addition, it is possible to obtain a thermally strengthened glass sheet in which stress is unlikely to concentrate on the edge portion, and in which the application stress due to the weight of the glass sheet itself during application of the glass sheet is less likely to be applied to the tip of the edge portion.
【００１４】また、本発明の第二の特徴構成によれば、
全面にわたって熱強化処理を施してある熱強化板ガラス
の端面部を、研磨方向が端面部の長手方向に沿う研磨に
よって平坦状でその表面最大凹凸が０．０４ｍｍ以下と
なるように形成する研磨工程を経て、前記端面部と前記
板ガラス表裏の平面部との境部を、表面最大凹凸が０．
００７ｍｍ以下となるように加工仕上げ工程を実施し、
前記熱強化処理による表面圧縮応力が１７〜２５ｋｇｆ
／ｍｍ 2 であるから、研磨に伴う筋（キズ）は、研磨方
向と同様に端面部の長手方向に沿って形成され、このた
め板ガラスの板面に沿って作用する熱破壊力等の集中を
回避し易くなる。そして、端縁部分に応力が集中し難く
することができ、また板ガラス施工時の板ガラス自体の
自重による施工応力が端縁部分の先端に加わり難い熱強
化板ガラスとすることができる。According to a second feature of the present invention,
A polishing step of forming an end face of the heat-strengthened glass sheet that has been subjected to the heat-strengthening process over the entire surface so that the polishing direction is flat by polishing along the longitudinal direction of the end face so that the maximum surface roughness is 0.04 mm or less. Through the boundary between the end face and the flat part on the front and back of the glass sheet, the surface maximum irregularity is set to 0.
Perform a finishing process to be 007 mm or less ,
The surface compressive stress by the heat strengthening treatment is 17 to 25 kgf
/ Mm 2 , the streaks (scratch) due to polishing are formed along the longitudinal direction of the end face in the same manner as the polishing direction, and therefore, the concentration of the thermal destructive force acting along the surface of the glass sheet is reduced. It is easier to avoid. Then, it is possible to make it difficult for stress to concentrate on the edge portion, and to provide a thermally strengthened sheet glass in which the application stress due to the own weight of the sheet glass itself at the time of sheet glass application is hardly applied to the tip of the edge portion.
【００１５】つまり、板ガラスの端面部は、平坦状でそ
の表面最大凹凸が０．０４ｍｍ以下と滑らかな状態に仕
上げてあり、且つ、端面部には稜部ができないから、端
面部に応力が集中することを回避することができる。ま
た、前記端面部と前記板ガラス表裏の平面部との境部
は、表面最大凹凸が０．００７ｍｍ以下と、より滑らか
な状態に仕上げてあるから、板ガラス全体としても、応
力集中が起こり易い前記稜部を無くすことができ、板ガ
ラス端縁部分への応力集中を回避することが可能とな
り、エッジ強度を構造的に向上させることができるよう
になる。このエッジ強度の増加は、約４ｋｇｆ／ｍｍ2
になる。That is, the end face of the sheet glass is flat and has a smooth surface with a maximum surface irregularity of 0.04 mm or less, and since no ridge is formed on the end face, stress is concentrated on the end face. Can be avoided. In addition, since the boundary between the end face and the flat part on the front and back of the sheet glass is finished in a smoother state with a maximum surface unevenness of 0.007 mm or less, the ridge where stress concentration is likely to occur even in the whole sheet glass. The portion can be eliminated, stress concentration on the edge portion of the sheet glass can be avoided, and the edge strength can be structurally improved. This increase in edge strength is about 4 kgf / mm 2
become.
【００１６】因みに、応力集中の生じ難い平坦状であっ
ても、表面の最大凹凸が０．０４ｍｍを超えて大きくな
る場合には、その凹凸の谷部・山部に応力が集中し易く
なる。また、前記端面部と前記板ガラス表裏の平面部と
の境部においては、面と面との変わり目であることか
ら、最大凹凸が０．００７ｍｍを超えて大きくなる場合
には、その凹凸の谷部・山部に応力が集中し易くなる。Incidentally, even when the surface is flat, in which stress concentration is unlikely to occur, if the maximum unevenness on the surface exceeds 0.04 mm, stress tends to concentrate on the valleys and peaks of the unevenness. In addition, at the boundary between the end face and the flat part of the front and back of the glass sheet, since the transition between the planes is made, when the maximum irregularity becomes larger than 0.007 mm, the valley of the irregularity is formed.・ Stress tends to concentrate on the peaks.
【００１７】そして、上述のようにエッジ強度が増加す
れば、熱強化処理を実施するのに、従来より低い温度域
での加熱や、従来より低い圧力での空気の吹き付けによ
る熱強化処理を実施しても、所定の熱強化処理後エッジ
強度を確保することができるようになり、従来のような
ガラス表面の平坦性に欠けたり、反りを生じて、反射映
像上の不具合が発生するのを防止できる。If the edge strength increases as described above, the heat strengthening process is performed by heating in a lower temperature range than before, or by performing air blowing at a lower pressure than in the past. However, it becomes possible to secure the edge strength after the predetermined heat strengthening treatment, and it is possible to prevent the flatness of the glass surface or warp from occurring as in the related art, thereby causing a problem on the reflected image. Can be prevented.
【００１８】ところで、建設省告示第１１２５号に基づ
く防火試験での甲種及び乙種防火戸として通常の熱強化
板ガラスを使用するには、板ガラスのエッジ強度を２１
ｋｇｆ／ｍｍ2（板ガラスの支持状態として、図２に示
すように、板ガラス周縁部におけるサッシュとの係わり
深さ寸法（かかり代という）（ｄ）が１０ｍｍ程度で、
熱伝導の良好な保持金物（９）で周縁部を挟持してある
場合）以上に確保しないと前記熱割れ現象を生じる危険
性があるが、本発明によれば熱強化処理による表面圧縮
応力が１７〜２５ｋｇｆ／ｍｍ2であるから、上述の板
ガラス端縁部分の仕上げによるエッジ強度の増加分４ｋ
ｇｆ／ｍｍ2と合わせて実質的には２１〜２９ｋｇｆ／
ｍｍ2のエッジ強度を確保することができ、前記甲種及
び乙種防火戸として問題なく使用することが可能とな
る。なお、前記熱強化処理による表面圧縮応力が２５ｋ
ｇｆ／ｍｍ2を超えると、その板ガラスに付与される表
面圧縮応力が不均一になり不具合が生じる。By the way, in order to use ordinary heat-strengthened glass sheets as the first and second class fire doors in the fire test based on the Ministry of Construction Notification No. 1125, the edge strength of the glass sheet must be 21%.
kgf / mm 2 (as the supporting state of the sheet glass, as shown in FIG. 2, a depth dimension (referred to as a allowance) (d) related to the sash at the periphery of the sheet glass is about 10 mm,
If the peripheral portion is not secured more than the holding hardware (9) having good thermal conductivity, there is a risk of causing the thermal cracking phenomenon. However, according to the present invention, the surface compressive stress due to the heat strengthening treatment is reduced. Since it is 17 to 25 kgf / mm 2 , the edge strength is increased by 4 k by finishing the edge portion of the plate glass described above.
gf / mm 2 and substantially 21 to 29 kgf /
The edge strength of 2 mm 2 can be ensured, and it can be used without problems as the above-mentioned class A and class B fire doors. The surface compressive stress due to the heat strengthening treatment is 25 k.
If it exceeds gf / mm 2 , the surface compressive stress applied to the sheet glass becomes non-uniform, causing a problem.
【００１９】また、前記かかり代（ｄ）を１５ｍｍ程度
にして板ガラスが支持されている場合には、板ガラスの
周縁部と中央部との温度差が多少大きくなるので、表面
圧縮応力は、１８ｋｇｆ／ｍｍ2以上必要となる。ま
た、前記かかり代（ｄ）を１５ｍｍ程度で、且つ、前記
保持金物（９）を使用しない支持状態（図３参照）にお
いては、表面圧縮応力は２２ｋｇｆ／ｍｍ2以上必要と
なる。すなわち、上述の何れの支持状態においても、前
記甲種及び乙種防火戸として問題なく使用することが可
能となる。In the case where the sheet margin is set to about 15 mm and the sheet glass is supported, the temperature difference between the peripheral part and the central part of the sheet glass becomes slightly large, so that the surface compressive stress is 18 kgf / mm 2 or more is required. Further, in a supporting state (see FIG. 3) where the hanging margin (d) is about 15 mm and the holding hardware (9) is not used, a surface compressive stress of 22 kgf / mm 2 or more is required. That is, in any of the above-mentioned supporting states, it becomes possible to use the above-mentioned class A and class B fire doors without any problem.
【００２０】なお、前記仕上げ工程は、バフ磨きによっ
て実施すれば、研磨表面の凹凸を数μｍオーダーに磨き
上げることができ、研磨によって前記境部に大きな研磨
溝が発生するのを防止でき、研磨溝への板ガラスへの応
力集中を抑えて、より板ガラスのエッジ強度を増加させ
ることができる。If the finishing step is carried out by buffing, the unevenness of the polished surface can be polished to the order of several μm, and large polishing grooves can be prevented from being formed at the boundary by polishing. The concentration of stress on the sheet glass in the groove can be suppressed, and the edge strength of the sheet glass can be further increased.
【００２１】また、前記仕上げ工程は、加熱溶融によっ
て実施すれば、前記仕上げ工程による仕上げ面を板ガラ
ス表面と同等に仕上げることができ、より板ガラスのエ
ッジ強度を増加させることが可能となる。Further, if the finishing step is carried out by heating and melting, the finished surface in the finishing step can be finished to be equal to the surface of the sheet glass, and the edge strength of the sheet glass can be further increased.
【００２２】また、前記仕上げ工程は、化学的な溶解に
よって実施すれば、仕上げ工程そのものを簡単な作業手
順によって実施することが可能となり、板ガラス端縁部
分の仕上げ作業の効率を向上させることができる。If the finishing step is performed by chemical dissolution, the finishing step itself can be performed by a simple operation procedure, and the efficiency of the finishing operation of the edge portion of the sheet glass can be improved. .
【００２３】〔発明の効果〕従って、本発明の第一の熱
強化板ガラスによれば、従来より簡便な方法によって板
ガラスを熱強化処理しても、防火ガラスとしての性能を
維持させることができるようになり、板ガラスとしての
品質向上、及び、熱強化処理設備の稼働コスト低減、並
びに施工時の板ガラスの自重による施工応力の緩和を図
ることが可能となる。[Effects of the Invention] Therefore, according to the first heat-strengthened glass sheet of the present invention, the performance as fireproof glass can be maintained even if the sheet glass is heat-strengthened by a simpler method than before. As a result, it is possible to improve the quality of the sheet glass, reduce the operation cost of the heat strengthening treatment equipment, and alleviate the construction stress due to the weight of the sheet glass during construction.
【００２４】また、本発明の第二の熱強化板ガラス端縁
部分の仕上げ方法によれば、板ガラス端縁部分へ内部応
力が集中的に作用するのを防止し易くなって、板ガラス
のエッジ強度を従来より増加させることが可能となり、
それに伴って、従来より簡便な方法によって板ガラスを
熱強化処理しても、防火ガラスとしての性能を維持させ
ることができるようになり、板ガラスとしての品質向
上、及び、熱強化処理設備の稼働コストをも図ることが
可能となる。Further, according to the second method for finishing the edge portion of the thermally strengthened sheet glass of the present invention, it is easy to prevent the internal stress from acting intensively on the edge portion of the sheet glass, and the edge strength of the sheet glass can be reduced. It is possible to increase than before,
Along with this, even if the sheet glass is thermally strengthened by a simpler method than before, it is possible to maintain the performance as fireproof glass, improve the quality as a sheet glass, and reduce the operating cost of the heat strengthening processing equipment. Can also be achieved.
【００２５】[0025]
【発明の実施の形態】以下に、本発明の実施形態を図面
に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２６】〔第一の実施形態〕図２は、サッシュ
（１）に対して、本発明の熱強化板ガラスの一実施形態
である板ガラス（３）の端縁部分（２）を嵌めて構成し
てある防火戸（４）を示すものである。[First Embodiment] FIG. 2 shows a sash (1) fitted with an edge portion (2) of a sheet glass (3), which is an embodiment of the thermally strengthened sheet glass of the present invention. It shows the fire door (4) that is located.
【００２７】前記サッシュ（１）は、戸枠部分を形成す
る環状のサッシュ本体（５）を設け、前記板ガラス
（３）をサッシュ本体（５）に保持するための保持部
（６）を、前記サッシュ本体（５）の枠内周部分に着脱
自在に設けて構成してある。前記サッシュ本体（５）、
及び、保持部（６）は、共に金属で形成してあり、火災
が発生しても前記板ガラス（３）を保持できることを考
慮して形成してある。前記保持部（６）は、一対のアン
グル部材で構成してあり、夫々の間に前記板ガラス
（３）の端縁部分（２）を保持できる隙間（７）を形成
できる状態に前記サッシュ本体（５）に取り付けてあ
る。The sash (1) is provided with an annular sash body (5) forming a door frame portion, and a holding portion (6) for holding the glass sheet (3) on the sash body (5) is provided with the sash (1). The sash body (5) is detachably provided on the inner peripheral portion of the frame. The sash body (5),
The holding portion (6) is made of metal, and is formed in consideration of holding the glass sheet (3) even if a fire occurs. The holding portion (6) is composed of a pair of angle members, and the sash body () is formed in a state where a gap (7) capable of holding an edge portion (2) of the glass sheet (3) can be formed between each of the angle members. It is attached to 5).
【００２８】また、前記隙間（７）には、前記板ガラス
（３）の端縁保護の機能を備えたクロロプレンゴム製の
セッティングブロック（前記サッシュ（１）の下辺の隙
間（７）にのみ設置）（８）と、前記板ガラス（３）の
端縁部分（２）を挟持して保持部（６）に固定する保持
金物（９）とを設けてある。In the gap (7), a setting block made of chloroprene rubber having a function of protecting the edge of the plate glass (3) (installed only in the gap (7) on the lower side of the sash (1)) (8) and a holding hardware (9) for holding the edge portion (2) of the plate glass (3) and fixing it to the holding portion (6).
【００２９】前記保持金物（９）は、金属製の薄板部材
によって形成してあり、前記隙間（７）に板ガラス
（３）を位置させることによって、前記端縁部分（２）
を弾性的に挟み込み固定できるように形成してある。具
体的には、板ガラス（３）の端縁部分（２）のほぼ全長
にわたる長さ寸法に形成してあり、図に示すように、前
記端縁部分（２）の長手方向視における断面形状が、角
張った『Ｕ』の字形状（六角形図形の上の一辺をなくし
た形状）で、前記『Ｕ』の字の両端部が板ガラス（３）
の表裏面に各別に線接当するように形成してある。外見
寸法は、前記隙間（７）の幅寸法より大きく形成してあ
り、前記板ガラス（３）の端縁部分（２）を挟んだ状態
で前記隙間（７）に設置することによって、前記保持部
（６）から挟持方向の抑圧力を受けて前記板ガラス
（３）を強力に挟持固定することができ、火災時の板ガ
ラス（３）の熱変形によるガラス周縁部分の外れを防止
することができる。The metal holding member (9) is formed of a thin metal plate, and the edge portion (2) is formed by positioning a sheet glass (3) in the gap (7).
Are formed so as to be elastically sandwiched and fixed. Specifically, the edge portion (2) of the sheet glass (3) is formed to have a length dimension substantially over the entire length, and as shown in the figure, the cross-sectional shape of the edge portion (2) in the longitudinal direction is shown. The shape of a squared "U" (a shape without one side on a hexagonal figure), and both ends of the "U" are plate glass (3)
Are formed so as to come into line contact with the front and back surfaces respectively. The outer dimensions are formed larger than the width of the gap (7), and the holding portion is disposed in the gap (7) with the edge portion (2) of the glass sheet (3) sandwiched therebetween. The sheet glass (3) can be strongly held and fixed by receiving the suppression in the holding direction from (6), and the glass peripheral part can be prevented from coming off due to thermal deformation of the sheet glass (3) at the time of fire.
【００３０】なお、保持金物（９）は、金属（例えば、
鉄やステンレス鋼）によって形成してあるから、環境温
度に速やかに馴染み易く、例えば、火災が発生した場合
に、保持している前記板ガラス（３）の周縁部にも熱が
伝わり易くして周縁部と中央部との温度差が生じ難い状
態を造り出し、破壊し難くすることが可能となる。この
板ガラス（３）の破壊し難さを、エッジに発生する応力
に換算すると、図に示す保持部（６）に対する板ガラス
（３）のかかり代（ｄ）が１５ｍｍ程度の通常の保持状
態においては、約２２ｋｇｆ／ｍｍ2の応力が発生す
る。但し、前記かかり代（ｄ）が１０ｍｍ程度の浅い保
持状態においては、板ガラス（３）の中央部と端縁部分
の温度差が小さくなることから、約１ｋｇｆ／ｍｍ2ほ
ど発生する応力が緩和されて約２１ｋｇｆ／ｍｍ2とな
る。The holding metal (9) is made of a metal (for example,
(Iron or stainless steel), so that it easily adapts to the ambient temperature quickly. For example, in the event of a fire, heat is easily transmitted to the peripheral portion of the plate glass (3) that is being held. It is possible to create a state in which a temperature difference between the portion and the central portion is unlikely to occur, and to make it difficult to break. When the difficulty in breaking the glass sheet (3) is converted into the stress generated at the edge, in the normal holding state where the margin (d) of the glass sheet (3) to the holding portion (6) shown in the figure is about 15 mm. , About 22 kgf / mm 2 . However, in the shallow holding state in which the allowance (d) is about 10 mm, the temperature difference between the central portion and the edge portion of the sheet glass (3) becomes small, so that the stress generated by about 1 kgf / mm 2 is reduced. It is about 21 kgf / mm 2 .
【００３１】次に、板ガラス（３）について説明する。
前記板ガラス（３）は、ソーダ石灰系の板ガラスを、後
述する端縁部分の仕上げ工程を経てから、吊り金具を使
用しない製法で熱強化処理を施して形成してある。Next, the plate glass (3) will be described.
The sheet glass (3) is formed by subjecting a soda-lime-based sheet glass to a heat strengthening process by a manufacturing method that does not use hanging metal fittings after a finishing step of an edge portion described later.
【００３２】前記板ガラス（３）は、その端面部（３
ａ）を平坦状に、且つ、その表面最大凹凸が０．０４ｍ
ｍ以下となるように形成する研磨工程を経て、前記端面
部（３ａ）と前記板ガラス（３）表裏の平面部（３ｂ）
との境部（３ｃ）を、前記研磨工程よりさらに滑らか
に、すなわち表面最大凹凸が０．００７ｍｍ以下となる
ように加工仕上げ工程を実施して端縁部分の仕上げを行
ってある。The flat glass (3) has an end face (3
a) is flat and the surface maximum irregularity is 0.04 m
m and a flat portion (3b) on the front and back of the glass plate (3) through a polishing step of forming the glass plate to be not more than m.
The boundary (3c) is processed more smoothly than the polishing step, that is, the processing and finishing step is performed so that the maximum surface unevenness is 0.007 mm or less to finish the edge portion.
【００３３】具体的には、前記研磨工程は、図１（イ）
に示すように、軸心廻りに回転する円筒ホイール（１
０）の外周面を使って研磨する平廻り円筒ホイール型研
磨方式の研磨方法によって実施するもので、前記円筒ホ
イール（１０）は、軸心方向の外径寸法が中間部と両外
側部で同径となるようにその外周面を形成してあり、被
研磨部分となる板ガラス（３）の端面部（３ａ）が平坦
状に研磨されるように構成してある。そして、前記円筒
ホイール（１０）の外周面は、＃２２０番手より細かな
研磨部に形成してある。More specifically, the polishing step is performed as shown in FIG.
As shown in the figure, a cylindrical wheel (1
The cylindrical wheel (10) has the same outer diameter in the axial direction at the middle portion and at both outer portions in the cylindrical wheel (10). The outer peripheral surface is formed so as to have a diameter, and the end surface (3a) of the plate glass (3) to be polished is polished flat. The outer peripheral surface of the cylindrical wheel (10) is formed with a finer polishing portion than # 220.
【００３４】この研磨工程において研磨処理が施された
前記端面部（３ａ）は、平坦状で、且つ、表面内の凹凸
が０．０３ｍｍ程度に仕上げられており、非常に細かな
凹凸であるから、板ガラス（３）の内部応力が集中的に
作用するのを避け易くなる。The end face portion (3a) polished in this polishing step is flat, and the surface irregularities are finished to about 0.03 mm, and are very fine irregularities. In addition, it is easy to prevent the internal stress of the sheet glass (3) from acting intensively.
【００３５】さらには、研磨工程での研磨方向は、板ガ
ラス（３）の端面部（３ａ）の長手方向に沿って設定し
てあるから、研磨に伴う筋（キズ）は、同様に端面部
（３ａ）の長手方向に沿って形成され、このため板ガラ
ス（３）の板面に沿って作用する熱破壊力等の集中を回
避し易くなる。Further, since the polishing direction in the polishing step is set along the longitudinal direction of the end face portion (3a) of the sheet glass (3), the streaks (scratch) caused by the polishing are likewise formed on the end face portion (3). 3a) is formed along the longitudinal direction, so that concentration of thermal destructive force or the like acting along the plate surface of the glass sheet (3) can be easily avoided.
【００３６】前記仕上げ工程は、図１（ロ）に示すよう
に、二軸の回転軸に張り廻されて回転する研磨用ベルト
（１１）の外周面を使って研磨するバフ磨き方式の研磨
方法によって実施するものである。このバフ磨きとは、
極上仕上げとも呼ばれ、一般的には、羊の皮で形成した
ベルト（１１）で研磨し、その研磨に際しては、酸化セ
リウム（非常に細かい粒度の研磨粉）の水溶液を被研磨
部分に掛けながら実施することによって、表面粗さが３
〜７μｍ（殆ど板ガラス表裏面の表面粗さと等しい値）
にまで細かくなり、ツヤを出すことも可能で、前記境部
（３ｃ）への内部応力の集中が起こり難くすることがで
きる。これを強度に換算すると、約４ｋｇｆ／ｍｍ2ほ
どである。In the finishing step, as shown in FIG. 1 (b), a buffing type polishing method of polishing using the outer peripheral surface of a polishing belt (11) which is stretched around a biaxial rotating shaft and rotates. It is implemented by. This buff polishing is
It is also called the finest finish, and is generally polished with a belt (11) made of sheep skin, and in the polishing, an aqueous solution of cerium oxide (polishing powder having a very fine particle size) is applied to the portion to be polished. By carrying out, the surface roughness is 3
７7 μm (almost equal to the surface roughness of the front and back surfaces of the sheet glass)
, And it is possible to give a luster, and it is possible to make it difficult for internal stress to concentrate on the boundary (3c). When this is converted into strength, it is about 4 kgf / mm 2 .
【００３７】前記研磨工程、及び仕上げ工程によって、
板ガラス（３）の端縁部分（２）に内部応力が集中し難
くすることができ、特に、板ガラス（３）の板面に沿っ
て作用する内部応力の集中を回避し易くなる。その結
果、火災による熱を受けても破壊し難くすることが可能
となり、熱強化処理によって施される応力に換算して約
４ｋｇｆ／ｍｍ2ほど応力緩和できることが確認されて
いる。By the polishing step and the finishing step,
The internal stress can be made hard to concentrate on the edge portion (2) of the glass sheet (3), and in particular, the concentration of the internal stress acting along the plate surface of the glass sheet (3) can be easily avoided. As a result, it has been confirmed that it is possible to make it difficult to break even when receiving heat from a fire, and that the stress can be reduced by about 4 kgf / mm 2 in terms of the stress applied by the heat strengthening treatment.
【００３８】例えば、建設省告示第１１２５号に基づく
防火試験での甲種及び乙種防火戸として板ガラスを使用
するには、板ガラスのエッジ強度を２６ｋｇｆ／ｍｍ2
（前記かかり代（ｄ）が１５ｍｍ程度の場合）以上に確
保する必要があるが、本実施形態の板ガラス（３）によ
れば、前記保持金物（９）による保持に伴って４ｋｇｆ
／ｍｍ2、端面部分（２）の仕上げに伴って約４ｋｇｆ
／ｍｍ2のエッジ強度を確保することができるから、熱
強化処理によって最低１８ｋｇｆ／ｍｍ2の強化を図る
だけでよくなる。また、前記かかり代（ｄ）が１０ｍｍ
程度の浅い保持状態においては、板ガラス（３）の中心
部と周縁部との温度差が多少減少することによって発生
熱応力も減少し、熱強化処理によって最低１７ｋｇｆ／
ｍｍ2の強化を図ればよくなる。For example, in order to use a sheet glass as a class A and class B fire door in a fire test based on the Ministry of Construction Notification No. 1125, the edge strength of the sheet glass must be 26 kgf / mm 2.
It is necessary to secure more than (the case where the above-mentioned margin (d) is about 15 mm). However, according to the plate glass (3) of the present embodiment, 4 kgf is caused by the holding by the holding hardware (9).
/ Mm 2 , approx. 4 kgf with finishing of the end face part (2)
/ Mm 2 , it is only necessary to strengthen at least 18 kgf / mm 2 by the heat strengthening treatment. Also, the hanging allowance (d) is 10 mm
In the shallow holding state, the temperature difference between the central portion and the peripheral portion of the sheet glass (3) is slightly reduced, so that the generated thermal stress is also reduced.
mm 2 should be strengthened.
【００３９】従って、当該板ガラス（３）の熱強化処理
においては、従来のように、板ガラス（３）の加熱温度
７６０℃、冷却空気吹き付けの際のノズルからの背圧９
５０ｍｍＡｑという仕様で実施しなくても、例えば、加
熱温度は、ガラスの軟化点（７２０〜７３０℃）以下、
冷却空気吹き付け背圧５００ｍｍＡｑで実施しても、所
定のエッジ強度を確保することができるようになり、熱
強化処理に伴う板ガラスの品質の低下（ガラス表面の平
坦性に欠けたり、反りを生じる）を防止して、歩留りを
よくすることができると共に、熱強化処理設備の稼働コ
ストの低減をも図ることが可能となる。Therefore, in the heat strengthening treatment of the glass sheet (3), the heating temperature of the glass sheet (3) is 760.degree.
Even if it is not carried out at the specification of 50 mmAq, for example, the heating temperature is equal to or lower than the softening point of glass (720 to 730 ° C.)
Even when the cooling air is blown at a back pressure of 500 mmAq, a predetermined edge strength can be ensured, and the quality of the sheet glass deteriorates due to the heat strengthening treatment (the flatness of the glass surface is lost or warpage occurs). , The yield can be improved, and the operating cost of the heat strengthening processing equipment can be reduced.
【００４０】なお、板ガラス（３）のエッジ強度（表面
圧縮応力）の測定は、全反射応力測定方法により行っ
た。全反射応力測定方法は、被測定板ガラス表面にこれ
より屈折率の僅かに大きいプリズムを置き、被測定点に
集束する円偏光光束を全反射臨界角にほぼ等しい角度で
入射させて、反射光観察望遠鏡の視野に現れる明暗の全
反射境界線間のずれ量を既知応力により較正した目盛り
で測定する方法によって実施した。The edge strength (surface compression stress) of the sheet glass (3) was measured by a total reflection stress measurement method. In the total reflection stress measurement method, a prism having a slightly higher refractive index is placed on the surface of the plate glass to be measured, and a circularly polarized light beam converging at the point to be measured is incident at an angle approximately equal to the critical angle for total reflection, and reflected light observation is performed. The measurement was carried out by measuring the amount of shift between the light and dark total reflection boundary lines appearing in the field of view of the telescope on a scale calibrated by a known stress.
【００４１】〔第二の実施例〕図３に示すように、前記
保持金物（９）を使用せずに、板ガラス（３）と保持部
（６）との間の前記隙間（７）に、セラミックスロープ
（Ｓ１）やセラミックスペーパー（Ｓ２）を詰め込んで
板ガラス（３）を保持する保持構造においては、前記か
かり代（ｄ）が１５ｍｍ程度の通常の保持状態において
は、前述の板ガラス（３）の端縁部分（２）の仕上げに
伴って約４ｋｇｆ／ｍｍ2のエッジ強度を確保すること
ができるから、熱強化処理によって最低２２ｋｇｆ／ｍ
ｍ2の強化を図るだけでよくなる。また、前記かかり代
（ｄ）が１０ｍｍ程度の浅い保持状態においては、板ガ
ラス（３）の中心部と周縁部との温度差が多少減少する
ことによって発生熱応力も減少し、熱強化処理によって
最低２０ｋｇｆ／ｍｍ2の強化を図ればよくなる。[Second Embodiment] As shown in FIG. 3, without using the holding hardware (9), the gap (7) between the sheet glass (3) and the holding portion (6) is In the holding structure for holding the glass sheet (3) by stuffing the ceramic rope (S1) or the ceramic paper (S2), in the normal holding state in which the allowance (d) is about 15 mm, the above-described glass sheet (3) is used. An edge strength of about 4 kgf / mm 2 can be secured with the finishing of the edge portion (2).
It made it is only strengthen the m 2. Further, in the shallow holding state in which the allowance (d) is about 10 mm, the temperature difference between the central portion and the peripheral portion of the sheet glass (3) is slightly reduced, so that the generated thermal stress is also reduced. It is sufficient if reinforcement of 20 kgf / mm 2 is achieved.
【００４２】〔別実施例〕以下に、別実施例を説明す
る。[Another embodiment] Another embodiment will be described below.
【００４３】〈１〉 前記研磨工程は、先の実施形態で
説明した平廻り円筒ホイール型研磨方式による研磨方法
に限定されるものではなく、例えば、カップホイール
（ホイール面に研磨用ダイヤモンドや砥石を付設してあ
るもの）を用いた研磨方法との併用や、バフ磨き方式の
研磨方法、または、その併用による研磨方法であっても
よい。また、前記仕上げ工程は、先の実施形態で説明し
たバフ磨きに限定されるものではなく、例えば、板ガラ
ス（３）端縁部分（２）の局部的な加熱熔融によって実
施したり、または、化学的な溶解によって実施するもの
であってもよい。要するに、端面部（３ａ）が平坦状に
形成されており、その表面最大凹凸が０．０４ｍｍ以
下、前記境部（３ｃ）は表面最大凹凸が０．００７ｍｍ
以下に仕上げてあればよい。<1> The polishing step is not limited to the polishing method by the flat cylindrical wheel type polishing method described in the above embodiment. For example, a cup wheel (a polishing diamond or a grindstone may be applied to the wheel surface). ), A polishing method using a buffing method, or a polishing method using a combination thereof. Further, the finishing step is not limited to the buff polishing described in the above embodiment. For example, the finishing step may be performed by local heating and melting of the edge portion (2) of the sheet glass (3), or may be chemically performed. The dissolution may be carried out by a manual dissolution. In short, the end face portion (3a) is formed in a flat shape, the surface maximum irregularity is 0.04 mm or less, and the boundary (3c) has the surface maximum irregularity of 0.007 mm.
The following should be completed.
【００４４】〈２〉 板ガラス（３）と、サッシュ本体
（５）との取り付けは、先の実施形態に限定されるもの
ではなく、例えば図４に示すように、使用する保持金物
として、サッシュ本体（５）と面接触する金属製の弾性
保持金物（９ａ）を使用して固定すれば、サッシュ本体
（５）への輻射熱を、前記保持金物（９ａ）から板ガラ
ス（３）の周縁部に効率良く伝達することができ、板ガ
ラス（３）の中央部と周縁部との温度差を少なくして、
破壊し難くすることが可能となる。また、取り付け状態
の他の実施形態としては、図５に示すように、サッシュ
本体（５）の押縁（５ａ）に嵌合する金属製の弾性保持
金物（９ｂ）と、不燃製板（例えば、ケイカル板）によ
って挟持固定するものであってもよい。<2> The attachment of the plate glass (3) and the sash body (5) is not limited to the above embodiment. For example, as shown in FIG. If the metal sash (9a) is fixed by using a metal elastic holding metal (9a) in surface contact with (5), the radiant heat to the sash main body (5) is efficiently transferred from the holding metal (9a) to the peripheral edge of the plate glass (3). It can transmit well and reduce the temperature difference between the central part and the peripheral part of the glass sheet (3),
It is possible to make it difficult to destroy. As another embodiment of the mounting state, as shown in FIG. 5, a metal elastic holding metal fitting (9b) fitted to the pressing edge (5a) of the sash body (5) and a non-combustible plate (for example, (Kycal board).
【００４５】なお、特許請求の範囲の項に、図面との対
照を便利にするために符号を記すが、該記入により本発
明は添付図面の構成に限定されるものではない。In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.
【図１】熱強化板ガラス端縁部分の仕上げ方法を示す説
明図FIG. 1 is an explanatory view showing a method for finishing an edge portion of a thermally strengthened glass sheet.
【図２】第一実施形態の防火戸を示す要部の断面図FIG. 2 is a sectional view of a main part showing the fire door of the first embodiment.
【図３】第二実施形態の防火戸を示す要部の断面図FIG. 3 is a sectional view of a main part showing a fire door of a second embodiment.
【図４】別実施例の板ガラス取り付け状況を示す断面図FIG. 4 is a cross-sectional view showing a state of mounting a sheet glass according to another embodiment.
【図５】別実施例の板ガラス取り付け状況を示す断面図FIG. 5 is a cross-sectional view showing a state of mounting a glass sheet of another embodiment.
３ 板ガラス ３ａ 端面部 ３ｂ 平面部 ３ｃ 境部 3 Sheet glass 3a Edge 3b Flat 3c Boundary
Claims (2)
熱強化板ガラスであって、 前記板ガラス（３）の端面部（３ａ）が、その長手方向
に沿った研磨方向で研磨されて平坦状に形成されてお
り、その表面最大凹凸が０．０４ｍｍ以下に仕上げられ
ていると共に、前記端面部（３ａ）と前記板ガラス
（３）表裏の平面部（３ｂ）との境部（３ｃ）が、表面
最大凹凸が０．００７ｍｍ以下に仕上げられており、前
記熱強化処理による表面圧縮応力が１７〜２５ｋｇｆ／
ｍｍ 2 であることを特徴とする熱強化板ガラス。1. A heat-strengthened glass sheet which has been subjected to a heat-strengthening process over its entire surface, wherein an end face portion (3a) of the glass sheet (3) is polished in a polishing direction along a longitudinal direction thereof to form a flat shape. The surface maximum irregularity is finished to 0.04 mm or less, and the boundary (3c) between the end face (3a) and the flat surface (3b) on the front and back of the glass sheet (3) is the maximum surface. unevenness has been finished in less than 0.007mm, before
The surface compressive stress by the heat strengthening treatment is 17 to 25 kgf /
thermally tempered glass plate which is a mm 2.
熱強化板ガラス端縁部分の仕上げ方法であって、 前記板ガラス（３）の端面部（３ａ）を、研磨方向が端
面部（３ａ）の長手方向に沿う研磨によって平坦状でそ
の表面最大凹凸が０．０４ｍｍ以下となるように形成す
る研磨工程を経て、前記端面部（３ａ）と前記板ガラス
（３）表裏の平面部（３ｂ）との境部（３ｃ）を、表面
最大凹凸が０．００７ｍｍ以下となるように加工仕上げ
工程を実施し、前記熱強化処理による表面圧縮応力が１
７〜２５ｋｇｆ／ｍｍ 2 であることを特徴とする熱強化
板ガラス端縁部分の仕上げ方法。 2. A method of finishing an edge portion of a heat-strengthened glass sheet which has been subjected to a heat-strengthening process over the entire surface, wherein the edge portion (3a) of the sheet glass (3) is polished in the longitudinal direction of the edge portion (3a). Through a polishing process of forming a flat surface by polishing along a direction so that the maximum surface unevenness is 0.04 mm or less, a boundary between the end face portion (3a) and the flat portion (3b) on the front and back of the plate glass (3) is formed. The part (3c) is processed and finished so that the maximum surface unevenness is 0.007 mm or less, and the surface compressive stress due to the heat strengthening treatment is 1 part.
A method for finishing an edge portion of a thermally strengthened glass sheet, which is 7 to 25 kgf / mm 2 .
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08956696A JP3308447B2 (en) | 1996-04-11 | 1996-04-11 | Heat-strengthened glass sheet and method for finishing edge portion thereof |
| DE1997604325 DE69704325T2 (en) | 1996-04-11 | 1997-04-07 | THERMALLY HARDENED GLASS PANELS AND METHOD FOR FINISHING THEIR WHEELS |
| EP97914623A EP0842904B1 (en) | 1996-04-11 | 1997-04-07 | Thermally tempered flat glass and method of finishing edge portions of the same |
| AT97914623T ATE199887T1 (en) | 1996-04-11 | 1997-04-07 | THERMALLY HARDENED GLASS PANELS AND METHOD FOR FINISHING THEIR EDGES |
| CNB200310114229XA CN1204070C (en) | 1996-04-11 | 1997-04-07 | Heat reinforcing sheet glass |
| PCT/JP1997/001188 WO1997037947A1 (en) | 1996-04-11 | 1997-04-07 | Thermally tempered flat glass and method of finishing edge portions of the same |
| US08/981,129 US5939175A (en) | 1996-04-11 | 1997-04-07 | Method of finishing heat-reinforced plate glass and edge regions thereof |
| CNB971906343A CN1154619C (en) | 1996-04-11 | 1997-04-07 | Thermally tempered flat glass and method of finishing edge portion of the same |
| KR1019970709263A KR100373414B1 (en) | 1996-04-11 | 1997-04-07 | How to Finish Thermo-Tempered Glass and Edges |
| TW86104544A TW453980B (en) | 1996-04-11 | 1997-04-09 | Heat-tempered sheet glass and method of finishing edge thereof |
| MYPI97001594A MY118238A (en) | 1996-04-11 | 1997-04-11 | Method of finishing heat-reinforced plate glass and edge regions thereof |
| HK98112167A HK1016957A1 (en) | 1996-04-11 | 1998-11-20 | Thermally tempered flat glass and method of finishing edge portions of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08956696A JP3308447B2 (en) | 1996-04-11 | 1996-04-11 | Heat-strengthened glass sheet and method for finishing edge portion thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09278467A JPH09278467A (en) | 1997-10-28 |
| JP3308447B2 true JP3308447B2 (en) | 2002-07-29 |
Family
ID=13974373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08956696A Expired - Fee Related JP3308447B2 (en) | 1996-04-11 | 1996-04-11 | Heat-strengthened glass sheet and method for finishing edge portion thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3308447B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102341214B (en) | 2009-03-10 | 2015-01-28 | 日本电气硝子株式会社 | Glass substrate and method for manufacturing same |
| JP5868577B2 (en) * | 2010-05-20 | 2016-02-24 | 日本電気硝子株式会社 | Glass substrate and manufacturing method thereof |
| US8986072B2 (en) * | 2011-05-26 | 2015-03-24 | Corning Incorporated | Methods of finishing an edge of a glass sheet |
-
1996
- 1996-04-11 JP JP08956696A patent/JP3308447B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09278467A (en) | 1997-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6408578B1 (en) | Method of finishing edge of sheet glass, heat-tempered sheet glass using the method, and fire-resistant construction material using the heat-tempered sheet glass | |
| KR100373414B1 (en) | How to Finish Thermo-Tempered Glass and Edges | |
| EP1215039B1 (en) | Laminated glass and glass plate used for producing laminated glass | |
| CA2171323C (en) | Process for producing flat or curved glass plates | |
| JP3414205B2 (en) | Laminated glass | |
| JPH08118220A (en) | Method for finishing edge of plate glass | |
| JP3238322B2 (en) | Heat strengthened flat glass | |
| JP3308446B2 (en) | Heat-strengthened glass sheet and method for finishing edge portion thereof | |
| JP3308447B2 (en) | Heat-strengthened glass sheet and method for finishing edge portion thereof | |
| KR100217406B1 (en) | Method for processing plate-type glass edge,thermal reinforced sheet glass and fire precaution | |
| JP3133652B2 (en) | Thermally strengthened flat glass for fire protection | |
| JP2003040635A (en) | Production method for fireproof glass | |
| JP2886788B2 (en) | Glass plate mounting structure | |
| JP3693560B2 (en) | Fire glass finishing method | |
| JPH09208246A (en) | Fireproof glass | |
| JPH0649586B2 (en) | Heat-treated glass plate and its manufacturing method | |
| JP4738688B2 (en) | Heat-resistant flat glass for fire protection | |
| JPS60171245A (en) | Film coated glass plate | |
| JPS5925736B2 (en) | Improved method for manufacturing heat-treated glass plates | |
| Shinkai | The fracture and fractography of flat glass | |
| JP3267846B2 (en) | Method for flattening sheet glass and method for manufacturing magnetic recording medium using the method | |
| JPS5852929B2 (en) | fire protection window glass plate | |
| JPS6238288B2 (en) | ||
| CA2330160A1 (en) | Process for the production of prestressed or bent glass elements | |
| JPS5925735B2 (en) | Manufacturing method of heat treated glass plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080517 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090517 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100517 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100517 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110517 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110517 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120517 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130517 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |