JP2016175835A - 薄ガラス積層板を積層するための方法 - Google Patents
薄ガラス積層板を積層するための方法 Download PDFInfo
- Publication number
- JP2016175835A JP2016175835A JP2016082743A JP2016082743A JP2016175835A JP 2016175835 A JP2016175835 A JP 2016175835A JP 2016082743 A JP2016082743 A JP 2016082743A JP 2016082743 A JP2016082743 A JP 2016082743A JP 2016175835 A JP2016175835 A JP 2016175835A
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- Prior art keywords
- vacuum
- glass
- stack
- glass plate
- laminate
- 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.)
- Pending
Links
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- Y10T156/1043—Subsequent to assembly
- Y10T156/1044—Subsequent to assembly of parallel stacked sheets only
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Abstract
【解決手段】120℃を超えないソーク温度及び約−0.6バール(−6×104Pa)をこえない真空を用いることで作製するために、真空リングまたは真空バッグを用い、積層された2枚の薄ガラス板12,14及び高分子材中間層16の1つ以上の集成スタックを単一の基準金型32の上に重ねて単一の真空バッグまたは真空リング内で同時に処理する。真空バッグまたは真空リングによって印加される不規則な力から集成スタックを保護するため、基準金型上の集成スタックの最上面の上に1枚以上の薄ガラス板を置くことができる。
【選択図】図4
Description
第1のガラス板、第2のガラス板及び高分子材中間層を提供する工程であって、第1のガラス板及び第2のガラス板の少なくとも一方は1mmをこえない厚さを有するものである、工程、
第1のガラス板の上に中間層を重ね、中間層の上に第2のガラス板を重ねて、集成スタックを形成する工程、
集成スタックの周縁に真空を印加する工程、
集成スタックを、中間層の軟化温度にあるかまたはそれより高いソーク温度に加熱する工程、及び
中間層を脱気し、中間層を第1のガラス板及び第2のガラス板に張り付けるに十分な時間(ソーク時間)の間、真空及びソーク温度を維持する工程、
を含むプロセスが開示される。第1のガラス板及び第2のガラス板はいずれも1mmをこえない厚さを有することができる。また第1のガラス板及び第2のガラス板はいずれも化学的に強化されたガラス板とすることができる。
2枚の薄ガラス板12及び14と高分子材中間層16を、第1のガラス板12の上に中間層16を載せ、次いで中間層16の上に第2のガラス板14を載せることで、スタック18に集成する工程、
集成スタック18の周縁に真空を印加するための封止を形成するため、図2B及び2Cに示されるように、集成スタック18の周縁部を囲んで真空リング20,22をクランプする工程、
真空リング20でクランプされたままの集成スタック18をオートクレーブまたはオーブン24内に入れる工程、
真空リング上の真空管路/チューブを介して真空リング20を真空引きする工程、
オートクレーブ内の温度を高分子材中間層16の軟化温度より若干高い温度(ソーク温度)まで上げる工程、
中間層16を軟化させ、2枚のガラス板12と14の間の空間を脱気して、軟化した中間層16を2枚のガラス板12,14に接合/張付けし、よって集成スタック18を積層し合わせるため、真空リング内の真空を維持しながら、真空及びソーク温度を維持する工程、
−同様の時間/温度環境を真空バッグ積層形成プロセスに用いることができる、
集成スタックをオートクレーブから取り出す工程、
真空リングを取り外す工程、
最後に、真空ロングをスタックから分離する工程、
を含むことができる。得られた積層板は、完全に封止されているべき、周縁部において、ほとんど透明または透明であろう。必要であれば、積層板を完成し、透明にするため、積層板を高温/高圧においてオートクレーブ処理することができる。上述したように、積層されているガラス板の少なくとも一方が1.0mmをこえない厚さを有する薄ガラス板である場合、ここで説明される手順により、いかなる以降のオートクレーブ工程の必要も排除することができる。
所望の積層板形状の基準及び形成のための基準表面としてはたらくための、所望の最終積層板形状の形にある基準面34を有する、高剛基板または基準金型32を提供する工程、
基準金型32の上面に第1の薄ガラス板12を重ねる工程、
第1の薄ガラス板の上面に接合性中間層材料16を重ねる工程、
集成された基準金型/ガラス/中間層/ガラスの集成スタック38を完成させるため、中間層16の上面に第2の薄ガラス板14を重ねる工程、
(高剛基板を含む)集成スタック38の周縁を囲んで適切な寸法につくられた真空リング20を嵌める工程、
−スタック38の周縁にかかる真空リング20の弾力が、スタックを容易にハンドリングできるように、スタックを合わせて保持する、
−真空リングの代わりに真空バッグが用いられる場合、基準金型を含む、集成スタックを、スタックのコンポーネントが相互に対して動かないように注意を払いながら、垂直(または水平)方位で真空バッグ内に入れることができる、
集成スタック38をオートクレーブまたはオーブンに入れる工程、
真空リング(または、用いられる場合には、真空バッグ)に−0.2バールから−0.6バール(または−0.9バール)の範囲にある真空を印加する工程、
−真空が確立されると、オートクレーブ(またはオーブン)内の大気圧(またはさらに高い圧力)が薄ガラス板12及び16と中間層16を曲げて、基準金型32の形状をとらせる、
−スタックは次いで中間層材料の軟化温度より若干高い温度(例えば、PVB中間層に対して約100℃のソーク温度)に加熱される、
少なくとも積層構造の周縁を封止するかまたは中間層をガラス板に完全に張り付けるに十分な時間(例えば約10分間から約60分間の範囲の、ソーク時間)、高められたソーク時間及び温度を維持する工程、
−同様の時間/温度環境を真空バッグ積層形成プロセスに用いることができる、
集成スタック38を真空リング(または真空バッグ)とともにオートクレーブから取り出す工程、
真空リング(または真空バッグ)をスタックから取り外す工程、及び
最後に、基準金型をガラス積層板から分離する工程、
からなることができる。得られた積層板は、完全に封止されているべき、周縁部において特に、ほとんど透明または透明であろう。必要であれば、積層板を完成し、透明にするため、積層板を高温及び高圧においてオートクレーブ処理することができる。上述したように、積層されているガラス板の少なくとも一方は1.0mmをこえない厚さを有する薄ガラス板である場合、以降のオートクレーブ工程を排除することができる。
複数のガラス/中間層/ガラス集成積層スタック、例えば単一集成スタック48として同時処理するために単一の基準金型32の上の、一方が他方の上に載っている、2つの積層スタックS1及びS2を、重ねる工程、
基準金型32を含む集成スタック48を(図6には示されていない)真空バッグに入れる工程(または、集成スタック及び基準金型の周縁に品空リングをクランプする工程)、
−図6には2つの積層スタックS1及びS2しか示されていないが、いくつかのガラス/中間層/ガラス積層スタックを単一の基準金型上に集成して同時処理できることは理解されるであろう、
集成スタック48を入れている真空バッグ(基準金型は真空バッグ内部にある)をオートクレーブに入れる工程、
真空バッグに真空を印加する工程、
オートクレーブ内の圧力を大気圧より若干高いソーク圧力、例えば、約10psi(6.89×104Pa)から約15psi(1.03×104Pa)の圧力まで高める工程、
オートクレーブ(またはオーブン)及び集成スタックを、中間層の軟化温度より若干高いソーク温度、例えば、PVB中間層については、150℃をこえない、120℃をこえない、100℃をこえない、あるいは約90℃から約120℃または約90℃から約100℃の範囲の、ソーク温度まで加熱する工程、
オートクレーブ内のソーク温度及びソーク圧力を、少なくとも積層スタックの周縁を封止するに十分な時間あるいは積層スタックS1及びS2のガラス板に中間層を完全に張り付けるに十分な時間、例えば、約10分間から約60分の範囲のソーク時間にわたって、維持する工程、
−オートクレーブ内の圧力が薄ガラス板12及び14と中間層16を曲げて基準金型32の形状と同形にするであろう、
−積層スタックS1及びS2の周縁からの中間層滲出は本明細書に説明されるようにソーク温度及びソーク圧力を制御することによって防止することができる、
−同様の時間/温度環境を真空リング積層形成プロセスに用いることができる、
−真空リングプロセスにおいては、1mmより薄い厚さを有する薄ガラス板を積層する場合、オートクレーブ内の圧力は大気圧のままとすることができる。したがって、より高価なオートクレーブの代わりにオーブンを用いることができる、
積層されたスタック/積層板が入っている真空バッグ(または真空リング)をオートクレーブから取り出す工程、
真空リングから集成スタックを取り外す工程、及び
最後に、積層された薄ガラス積層板S1及びS2を基準モールド32から、また相互に、分離する工程、
を含むことができる。得られた薄ガラス積層板は、特に、完全に封止されているべき、周縁部においてほとんど透明であるかまたは透明であろう。必要であれば、積層板を完璧にし、透明にするため、次いで、高温及び高圧において積層板をオートクレーブ処理することができる。上述したように、それぞれの積層スタックにおいて積層されているガラス板の少なくとも一方が1.0mmをこえない厚さを有する薄ガラス板である場合、特にいずれもが1.0mmをこえない厚さを有する薄ガラス板であれば、ここで説明される手順は引き続くいかなるオートクレーブ工程も排除することができる。
複数のガラス板16/中間層16/ガラス板14積層スタックS1及びS2を基準金型32上に重ねる工程、
積層スタックS1及びS2の最上面の上に1枚以上の追加のガラス板を、次々に、重ねて、追加のガラス板、積層スタック及び基準金型を含む、集成スタック58を形成する工程、
先述したように、真空バッグに集成スタック58を入れる工程または真空リングに集成スタックをクランプする工程、
集成スタックを含む真空バッグまたは真空リングをオートクレーブまたはオーブンに入れる工程、
真空バッグまたは真空リングに真空を印加する工程、
中間層の軟化温度より若干高いソーク温度にオーブンを加熱する工程、
ガラス板が基準金型の形状をとること及び中間層16を脱気してガラス板に張り付けることが可能になるに十分な時間の間、ソーク温度及び真空を維持する工程、
真空バッグまたは真空リングをオートクレーブまたはオーブンから取り出す工程、
集成スタック58を真空バッグまたは真空リングから取り外す工程、及び
最後に、ガラス積層板S1及びS2を、相互に、また基準金型及び追加のガラス板44から分離する工程、
−これでガラス積層板S1及びS2が完成されている、
を含む。
12,14 薄ガラス板
16 高分子材中間層
18 スタック
20 真空リング
22 真空管路/チューブ
24 オートクレーブ/オーブン
32 基準金型
Claims (6)
- ガラス積層板を形成する方法において、
第1のガラス板、第2のガラス板及び高分子材中間層を提供する工程であって、前記第1のガラス板及び前記第2のガラス板の少なくとも一方は1mmをこえない厚さを有するものである工程、
前記第1のガラス板の上に前記中間層を重ね、前記中間層の上に前記第2のガラス板を重ねて、集成スタックを形成する工程、
前記集成スタックの周縁に真空を印加する工程、
前記中間層の軟化温度にあるかまたはそれより高いソーク温度に前記集成スタックを加熱する工程、
前記中間層を脱気し、前記中間層を前記第1のガラス板及び前記第2ガラス板に張り付けるに十分な時間(ソーク時間)の間、前記真空及び前記ソーク温度を維持する工程、及び
前記集成スタックを成形するために前記ガラス積層板の所望の形状に一致する形状を有する基準面をもつ基準金型を提供する工程、
を含み、
前記真空を印加する工程が前記基準金型を含む前記集成スタックの前記周縁に真空を印加する、ことを特徴とする方法。 - 前記第1のガラス板及び前記第2のガラス板のいずれもが、(a)1mmをこえない厚さを有する、または(b)化学的に強化されたガラスである、の少なくとも一方であることを特徴とする請求項1に記載の方法。
- 前記真空を印加する工程が、前記集成スタックの前記周縁に真空リングをクランプして前記真空リングに真空を印加する工程、
を含み、
前記加熱する工程が150℃をこえないソーク温度に前記集成スタックを加熱する工程を含む、
ことを特徴とする請求項1または2に記載の方法。 - 前記基準金型の前記基準面の上に2つ以上の前記集成スタックを重ねる工程、
をさらに含み、
前記真空を印加する工程が前記集成スタックの全て及び前記基準金型の周縁に同時に真空を印加する、
ことを特徴とする請求項1から3のいずれか1項に記載の方法。 - 前記集成スタックの最上面の上に少なくとも1枚の追加の薄ガラス板を重ねる工程、
をさらに含み、
前記真空を印加する工程が真空バッグ及び真空リングの一方内に前記集成スタックを入れて真空バッグ及び真空リングの前記一方に真空を印加する工程を含む、
ことを特徴とする請求項1から4のいずれか1項に記載の方法。 - 前記基準金型が4mmから6mmの厚さを有するソーダ石灰ガラス板で形成されることを特徴とする請求項1から5のいずれか1項に記載の方法。
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Also Published As
Publication number | Publication date |
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US20150122406A1 (en) | 2015-05-07 |
WO2013184904A1 (en) | 2013-12-12 |
EP2858822A1 (en) | 2015-04-15 |
JP2015521575A (ja) | 2015-07-30 |
JP5981647B2 (ja) | 2016-08-31 |
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