JP2001192244A - Intermediate film for laminated glass - Google Patents
Intermediate film for laminated glassInfo
- Publication number
- JP2001192244A JP2001192244A JP2000000900A JP2000000900A JP2001192244A JP 2001192244 A JP2001192244 A JP 2001192244A JP 2000000900 A JP2000000900 A JP 2000000900A JP 2000000900 A JP2000000900 A JP 2000000900A JP 2001192244 A JP2001192244 A JP 2001192244A
- Authority
- JP
- Japan
- Prior art keywords
- laminated glass
- interlayer film
- groove
- intermediate film
- glass
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10559—Shape of the cross-section
- B32B17/10577—Surface roughness
- B32B17/10587—Surface roughness created by embossing
Landscapes
- Joining Of Glass To Other Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、微細な凹部と凸部
とからなるエンボスが形成された合わせガラス用中間膜
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlayer film for laminated glass on which an embossed portion having fine concave portions and convex portions is formed.
【０００２】[0002]
【従来の技術】ガラス板の間に、可塑化ポリビニルブチ
ラール等の熱可塑性樹脂シートからなる中間膜を挟み、
互いに接着させて一体化してなる合わせガラスは、自動
車、航空機、建築物等の窓ガラスに広く使用されてい
る。このような合わせガラスは、通常、ガラス板の間に
中間膜を挟み、これをニップロールに通して扱くか又は
ゴムバックに入れて減圧吸引し、ガラス板と中間膜との
間に残留する空気を脱気しながら予備圧着し、次いで、
オートクレーブ内で加熱加圧して、本圧着を行うことに
より製造される。2. Description of the Related Art An interlayer made of a thermoplastic resin sheet such as plasticized polyvinyl butyral is sandwiched between glass plates.
Laminated glass bonded and integrated with each other is widely used for window glasses of automobiles, aircraft, buildings and the like. In such a laminated glass, usually, an intermediate film is sandwiched between glass plates and handled by passing through a nip roll or placed in a rubber bag and suctioned under reduced pressure to remove air remaining between the glass plate and the intermediate film. Pre-crimping with care, then
It is manufactured by heating and pressurizing in an autoclave and performing full pressure bonding.
【０００３】上記中間膜には、透明性、接着性、耐貫通
性、耐候性等の基本性能が良好であることのほかに、保
管中に中間膜同士がブロッキングしないこと、ガラス板
の間に中間膜を挟む際の取扱い作業性が良好であるこ
と、更に空気の巻き込みによる気泡の発生をなくすため
に、予備圧着工程での脱気性が良好であること等が要求
される。[0003] In addition to having good basic properties such as transparency, adhesiveness, penetration resistance, and weather resistance, the above-mentioned interlayer film is required to prevent the interlayer films from blocking each other during storage and to prevent the interlayer film from being interposed between glass plates. It is required to have good handling workability at the time of sandwiching, and to have good deaeration in the pre-compression bonding step in order to eliminate generation of air bubbles due to entrainment of air.
【０００４】通常、中間膜には、良好な脱気性を確保す
るために、その両面に凹部と凸部とからなるエンボスが
形成されている。凹部と凸部との形態としては、多数の
凸部と凸部に対する凹部とからなる各種の凹凸模様、又
は、多数の凸条と凸条に対する凹溝とからなる各種の凹
凸模様や、粗さ、配置、大きさ等種々な形状因子に関し
多様な値を有するエンボス形状が開示されている。しか
し、中間膜の両面に規則的なエンボスが形成されると、
互いの回折面の干渉により、一般的にモアレ現象と呼称
される縞状の回折像が出現する。[0004] Usually, the intermediate film has embosses formed of concave portions and convex portions on both surfaces thereof in order to ensure good deaeration. As the form of the concave portions and the convex portions, various concave and convex patterns composed of a large number of convex portions and concave portions for the convex portions, or various concave and convex patterns composed of a large number of convex portions and concave grooves for the convex portions, and roughness. Embossed shapes having various values for various shape factors, such as the shape, arrangement, and size, are disclosed. However, when regular embossing is formed on both sides of the interlayer,
Due to the interference between the diffraction surfaces, a fringe-like diffraction image generally called a moire phenomenon appears.
【０００５】上記モアレ現象は、外観の面から好ましく
ないばかりか、中間膜の裁断時や合わせ加工の作業時
に、キラキラと目につく干渉縞の変化等により、作業者
の目を疲れさせたり、乗物酔いのような症状を生じさ
せ、その結果、作業性の低下をもたらすという問題点が
ある。また、規則的に配置されたエンボスが片面のみに
付与された中間膜の場合であっても、それを複数枚重ね
合わせて作業する際には、やはりモアレ現象が出現し、
同様に作業性の低下を来すという問題点がある。The moiré phenomenon is not only unfavorable from the viewpoint of appearance, but also causes the eyes of the operator to be tired due to the change of interference fringes that are evident when the interlayer film is cut or when the work is performed. There is a problem that symptoms such as motion sickness are caused, and as a result, workability is reduced. In addition, even when the regularly arranged embossment is an intermediate film provided on only one side, a moire phenomenon also appears when working with a plurality of superposed layers,
Similarly, there is a problem that the workability is reduced.
【０００６】このため、凹凸形状の溝形状を規則的に配
置しそのパターンを各面で２５度以上、より好ましくは
９０度ずらすことによってモアレを解消する中間膜が、
例えば、特表平９−５０８０７８号公報等に開示されて
いる。For this reason, an intermediate film that eliminates moiré by regularly arranging concave and convex grooves and displacing the pattern by 25 ° or more, more preferably 90 ° on each surface,
For example, it is disclosed in Japanese Patent Publication No. 9-508078.
【０００７】しかし、上記の方法では、予備圧着工程に
おける脱気開始時の温度を厳密に制御しないと、合わせ
ガラス構成体（例えば、ガラス／中間膜／ガラス）の周
縁部が先にシールされる周縁部シール先行現象が発生
し、構成体内部の脱気が不充分になるという問題点があ
る。上記周縁部シール先行現象の発生を防止する手段と
してエンボスの粗さを大きくする方法もあるが、この場
合、構成体の周縁部のシールを確実に行うためには予備
圧着工程における予備圧着温度を大幅に高めなくてはな
らないという問題点がある。However, in the above method, unless the temperature at the start of degassing in the pre-compression bonding step is strictly controlled, the peripheral portion of the laminated glass structure (eg, glass / interlayer / glass) is sealed first. There is a problem that a leading edge of the peripheral edge seal occurs and deaeration inside the structure becomes insufficient. There is also a method of increasing the roughness of the emboss as a means for preventing the occurrence of the preceding phenomenon of the peripheral edge seal, but in this case, in order to surely seal the peripheral portion of the structure, the pre-compression temperature in the pre-compression bonding step is set. There is a problem that it has to be greatly increased.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、上記に鑑
み、予備圧着工程において脱気開始温度の制御を厳密に
行わなくとも周縁部シール先行現象を発生することがな
く、優れた脱気性を発揮し、過酷な条件下においても気
泡の発生による品質不良を殆ど生じることがない高品質
の合わせガラスを得ることができる合わせガラス用中間
膜を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an excellent deaeration without causing a rim sealing phenomenon even if the deaeration start temperature is not strictly controlled in the pre-compression bonding step. It is an object of the present invention to provide an interlayer film for a laminated glass which can exhibit high quality laminated glass which exerts almost no poor quality due to generation of bubbles even under severe conditions.
【０００９】[0009]
【課題を解決するための手段】本発明は、熱可塑性樹脂
シートの両面に凹部と凸部とからなるエンボスが形成さ
れた合わせガラス用中間膜であって、少なくとも片面の
上記凹部は、溝を形成しており、該溝の内に分断壁を有
する合わせガラス用中間膜である。以下に本発明を詳述
する。SUMMARY OF THE INVENTION The present invention provides an interlayer film for laminated glass in which an embossment composed of concave portions and convex portions is formed on both surfaces of a thermoplastic resin sheet, wherein at least one of the concave portions has a groove. An interlayer film for laminated glass, which is formed and has a dividing wall in the groove. Hereinafter, the present invention will be described in detail.
【００１０】本発明の合わせガラス用中間膜は、熱可塑
性樹脂シートの両面に凹部と凸部とからなるエンボスが
形成されている。上記熱可塑性樹脂シートとしては、従
来の合わせガラス用中間膜に用いられるシートが使用さ
れ、例えば、可塑化ポリビニルアセタール樹脂シート、
ポリウレタン系樹脂シート、エチレン−酢酸ビニル系樹
脂シート、エチレン−エチルアクリレート系樹脂シー
ト、可塑化塩化ビニル系樹脂シート等が挙げられる。こ
れらのシートは、接着性、耐候性、耐貫通性、透明性等
の合わせガラスに要求される基本的性能に優れている
が、なかでも、可塑化ポリビニルブチラール樹脂シート
に代表される可塑化ポリビニルアセタール樹脂シートが
好ましい。In the interlayer film for laminated glass of the present invention, embosses composed of concave portions and convex portions are formed on both surfaces of a thermoplastic resin sheet. As the thermoplastic resin sheet, a sheet used for a conventional interlayer film for laminated glass is used, for example, a plasticized polyvinyl acetal resin sheet,
Examples include a polyurethane resin sheet, an ethylene-vinyl acetate resin sheet, an ethylene-ethyl acrylate resin sheet, and a plasticized vinyl chloride resin sheet. These sheets are excellent in basic performance required for laminated glass such as adhesiveness, weather resistance, penetration resistance, transparency, etc., but among them, plasticized polyvinyl represented by plasticized polyvinyl butyral resin sheet Acetal resin sheets are preferred.
【００１１】上記熱可塑性樹脂シートの膜厚は、合わせ
ガラスとして必要な耐貫通性を考慮して決定されればよ
く、従来の合わせガラス用中間膜と同様に０．２〜２ｍ
ｍであるのが好ましい。The thickness of the thermoplastic resin sheet may be determined in consideration of the penetration resistance required as a laminated glass, and is 0.2 to 2 m as in the case of the conventional interlayer for laminated glass.
m is preferred.
【００１２】本発明の合わせガラス用中間膜において
は、上記熱可塑性樹脂シートの両面に凹部と凸部とから
なるエンボスが形成されている。上記エンボスの模様と
しては特に限定されず、多数の凸部とこれらの凸部に対
する凹部とからなる各種の凹凸模様が挙げられる。これ
らの凹凸模様は規則的に分布していてもよく、不規則に
分布していてもよいが、規則的に分布していることが好
ましい。上記凸部の高さは、全て同じであっても異なっ
ていてもよく、上記凸部に対する凹部の深さも、全て同
じであっても異なっていてもよい。In the interlayer film for laminated glass of the present invention, the thermoplastic resin sheet has embosses formed of concave portions and convex portions on both surfaces. The embossed pattern is not particularly limited, and includes various concavo-convex patterns including a large number of convex portions and concave portions corresponding to these convex portions. These concavo-convex patterns may be distributed regularly or irregularly, but are preferably distributed regularly. The heights of the projections may all be the same or different, and the depths of the depressions with respect to the projections may all be the same or different.
【００１３】上記凸部の形状としては特に限定されず、
三角錐、四角錐、円錐等の錐体；截頭三角錐、截頭四角
錐、截頭円錐等の截頭錐体；頭部が山型や半球状である
擬錐体等が挙げられる。上記凹部の形状としては、上記
凸部に対応したものが挙げられる。The shape of the projection is not particularly limited.
Pyramids such as triangular pyramids, quadrangular pyramids, and cones; truncated pyramids such as truncated triangular pyramids, truncated quadrangular pyramids, and truncated cones; and pseudo-pyramids having a mountain-shaped or hemispherical head. Examples of the shape of the concave portion include a shape corresponding to the convex portion.
【００１４】上記エンボスを形成する方法としては、エ
ンボスロール法、カレンダーロール法、異形押出法等が
挙げられる。なかでも、定量的に一定の微細な凹部と凸
部とからなるエンボスが得られる点で、エンボスロール
法が好ましい。Examples of the method for forming the emboss include an emboss roll method, a calender roll method, and a profile extrusion method. Among them, the embossing roll method is preferred in that an embossing composed of quantitatively constant fine concave portions and convex portions can be obtained.
【００１５】上記エンボスロール法で用いられるエンボ
スロールとしては、例えば、金属ロール表面に酸化アル
ミニウムや酸化珪素などの研削材を用いてブラスト処理
を行い、次いで表面の過大ピークを減少させるためにバ
ーチカル研削などを用いてラッピングを行うことによ
り、ロール表面に微細なエンボス模様（凹凸模様）を形
成したもの、彫刻ミル（マザーミル）を用い、この彫刻
ミルのエンボス模様（凹凸模様）を金属ロール表面に転
写することにより、ロール表面に微細なエンボス模様
（凹凸模様）を形成したもの、エッチング（蝕刻）によ
りロール表面に微細なエンボス模様（凹凸模様）を形成
したもの等が挙げられる。As the embossing roll used in the embossing roll method, for example, a metal roll surface is subjected to blasting using an abrasive such as aluminum oxide or silicon oxide, and then vertical grinding is performed to reduce an excessive peak on the surface. A wrapping process is used to form a fine embossed pattern (uneven pattern) on the roll surface. The engraving mill (mother mill) is used to transfer the embossed pattern (uneven pattern) of the engraving mill to the metal roll surface. By doing so, a material having a fine embossed pattern (concavo-convex pattern) formed on the roll surface, a material having a fine embossed pattern (concavo-convex pattern) formed on the roll surface by etching (etching), and the like can be given.
【００１６】本発明の合わせガラス用中間膜において、
少なくとも片面の上記凹部は、溝を形成している。本発
明において、凹部が溝を形成しているとは、凹部が連続
して溝形状をなしていることを意味する。In the interlayer film for laminated glass of the present invention,
The concave portion on at least one surface forms a groove. In the present invention, that the concave portion forms the groove means that the concave portion has a continuous groove shape.
【００１７】上記エンボスの形状において、ガラス板と
中間膜との予備圧着工程での脱気の際の空気の抜けやす
さは、凹凸形状の凹部の連続性に関係があり、凹部の間
隔や配置は空気の抜けやすさに大きく影響しない。脱気
の初期には凹凸形状の凹部の空気はガラスとの界面から
選択的に凹部の溝に流入する。その後溝内の空気は溝を
通って脱気されるが、この時溝内に残る空気量は中間膜
が充分に吸収しうる量である。In the above embossed shape, the ease of air release during degassing in the pre-compression bonding step between the glass plate and the intermediate film is related to the continuity of the concave portions of the concave and convex portions, and the spacing and arrangement of the concave portions. Does not significantly affect the ease with which air can escape. In the initial stage of degassing, the air in the concave portion of the concave and convex shape selectively flows into the groove of the concave portion from the interface with the glass. Thereafter, the air in the groove is degassed through the groove. At this time, the amount of air remaining in the groove is an amount that can be sufficiently absorbed by the interlayer film.
【００１８】上記凸部と上記凹部の寸法は特に限定され
ず、凸部の配置間隔（ピッチ）は１０〜２０００μｍで
あることが好ましく、より好ましくは５０〜１０００μ
ｍである。また、凸部の高さは５〜５００μｍであるこ
とが好ましく、より好ましくは２０〜１００μｍであ
る。更に、凸部の底辺の長さは３０〜１０００μｍであ
ることが好ましい。The dimensions of the projections and the recesses are not particularly limited, and the interval (pitch) between the projections is preferably 10 to 2000 μm, more preferably 50 to 1000 μm.
m. The height of the projection is preferably 5 to 500 μm, and more preferably 20 to 100 μm. Further, the length of the base of the projection is preferably 30 to 1000 μm.
【００１９】予備圧着時のエンボスの潰れ性にはエンボ
スの体積が大きく影響する。エンボスの体積を決定する
のは、凸部の間隔や配置、凸部の突平面の広がりであ
る。凸部の突平面が広いほどエンボスの体積を大きく設
定できる。このためエンボスの粗さとしては小さく設定
できることになる。エンボスの体積が大きく設定できる
とシール先行の問題が生じない合わせガラス用中間膜を
得ることができる。予備圧着時の周辺シールに必要な温
度では、合わせガラス用中間膜は充分流動状態となり、
エンボスの粗さがある一定の範囲にあれば充分周辺をシ
ールすることが可能となる。The crushability of the emboss at the time of pre-compression bonding is greatly affected by the volume of the emboss. The emboss volume is determined by the spacing and arrangement of the projections and the extent of the projection plane of the projections. The larger the protruding plane of the convex portion, the larger the volume of the emboss can be set. For this reason, the roughness of the emboss can be set small. If the emboss volume can be set large, an interlayer film for laminated glass that does not cause the problem of prior sealing can be obtained. At the temperature required for the peripheral seal during pre-compression bonding, the interlayer film for laminated glass is in a sufficiently fluid state,
If the roughness of the emboss is within a certain range, the periphery can be sufficiently sealed.
【００２０】本発明の合わせガラス用中間膜は、溝の内
に分断壁を有する。溝内に分断壁を有することにより、
溝底部まで充分にシールできない場合でも、必ず分断壁
が溝の底部より上部に位置し分断壁で中間膜とガラス板
との間がシールされることになりシール条件を緩和でき
る。上記分断壁の高さは、溝の深さより小さいことが好
ましい。上記分断壁の高さが、溝形状の深さより大きい
と脱気及びシールが不充分となる場合がある。上記分断
壁は、等間隔で配置されていることが好ましい。上記分
断壁が、等間隔で配置されていないと脱気が効率よく進
行しない。The interlayer film for laminated glass of the present invention has a dividing wall in the groove. By having a dividing wall in the groove,
Even when the bottom of the groove cannot be sufficiently sealed, the dividing wall is always located above the bottom of the groove, and the gap between the intermediate film and the glass plate is sealed by the dividing wall, so that the sealing condition can be eased. The height of the dividing wall is preferably smaller than the depth of the groove. If the height of the dividing wall is larger than the depth of the groove, degassing and sealing may be insufficient. It is preferable that the dividing walls are arranged at equal intervals. If the dividing walls are not arranged at equal intervals, deaeration will not proceed efficiently.
【００２１】本発明の合わせガラス用中間膜は、その一
方の面の凹凸形状の間隔に対して他方の面の凹凸形状の
間隔が同一でないことが好ましい。同一であるとモアレ
現象が生じやすい。In the interlayer film for laminated glass of the present invention, it is preferable that the interval between the uneven shapes on one surface is not the same as the interval between the uneven shapes on the other surface. If they are the same, a moiré phenomenon is likely to occur.
【００２２】本発明の合わせガラス用中間膜を用いて、
合わせガラスを作製することができる。上記合わせガラ
スに用いられるガラス板としては特に限定されず、例え
ば、無機ガラス；ポリカーボネート板、ポリメチルメタ
クリレート等の有機ガラス板等が挙げられる。上記合わ
せガラスの構成としては、本発明の合わせガラス用中間
膜が２枚のガラス板の間に挟まれていれば特に限定され
ず、ガラス板／中間膜／ガラス板よりなる三層構造に限
定されず、ガラス板／中間膜／ガラス板／中間膜／ガラ
ス板等よりなる多層構造でもよい。Using the interlayer film for laminated glass of the present invention,
Laminated glass can be produced. The glass plate used for the laminated glass is not particularly limited, and examples thereof include an inorganic glass; an organic glass plate such as a polycarbonate plate and polymethyl methacrylate. The configuration of the laminated glass is not particularly limited as long as the interlayer film for a laminated glass of the present invention is sandwiched between two glass plates, and is not limited to a three-layer structure including a glass plate / intermediate film / glass plate. And a multilayer structure composed of glass plate / interlayer / glass plate / interlayer / glass plate.
【００２３】本発明の合わせガラス用中間膜を用いて合
わせガラスを製造する方法としては特に限定されず、通
常の合わせガラスの製造方法と同様に、少なくとも一対
のガラス間に中間膜を挟み、先ず予備圧着を行って脱気
及び仮接着をした後、例えばオートクレーブ中で本圧着
を行うことにより、所望の合わせガラスを得ることがで
きる。The method for manufacturing a laminated glass using the interlayer film for a laminated glass of the present invention is not particularly limited, and an intermediate film is sandwiched between at least a pair of glasses, similarly to a normal method for manufacturing a laminated glass. After performing pre-compression bonding to perform degassing and temporary bonding, for example, by performing full-compression bonding in an autoclave, a desired laminated glass can be obtained.
【００２４】本発明の合わせガラス用中間膜として、例
えば、可塑化ポリビニルブチラール樹脂シートからなる
中間膜を用いて合わせガラスを製造する場合、例えば、
次のような手順で予備圧着と本圧着とを行えばよい。In the case of producing a laminated glass using an intermediate film made of a plasticized polyvinyl butyral resin sheet as the interlayer film for a laminated glass of the present invention, for example,
Preliminary crimping and main crimping may be performed in the following procedure.
【００２５】予備圧着は、二枚の透明な無機ガラス板の
間に中間膜を挟み、この積層体をニップロールに通し、
例えば、圧力２〜１０００ｋＰａ、温度５０〜１００℃
の条件で扱いて脱気しながら予備圧着する方法（扱き脱
気法）、又は、上記積層体を入れたゴムバックを排気系
に接続して−４０〜−７５ｋＰａの真空（絶対圧力３６
〜１ｋＰａ）に吸引減圧しながら温度を上げ、６０〜１
００℃で予備圧着する方法（減圧脱気法）等により行わ
れる。In the pre-compression bonding, an intermediate film is sandwiched between two transparent inorganic glass plates, and the laminate is passed through a nip roll,
For example, pressure 2 to 1000 kPa, temperature 50 to 100 ° C
Pre-compression bonding while handling and degassing under the conditions (handling deaeration method), or connecting a rubber bag containing the laminate to an exhaust system and applying a vacuum of -40 to -75 kPa (absolute pressure 36)
１1 kPa) while raising the temperature while reducing the pressure by suction.
It is performed by a method of pre-press bonding at 00 ° C. (vacuum degassing method) or the like.
【００２６】予備圧着された積層体は、常法によりオー
トクレーブを用いるか、又は、プレスを用いて、温度１
２０〜１５０℃、圧力２００〜１５００ｋＰａの条件下
で本圧着され、合わせガラスが製造される。The pre-compressed laminate is heated at a temperature of 1 ° C. using an autoclave or a press in a usual manner.
The final compression bonding is performed under the conditions of 20 to 150 ° C. and a pressure of 200 to 1500 kPa to produce a laminated glass.
【００２７】[0027]
【実施例】以下に実施例を挙げて本発明を更に詳細に説
明するが、本発明はこれらの実施例のみに限定されるも
のではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.
【００２８】実施例１〜４、比較例１ 各種のエンボス形状を形成するために種々のエンボスロ
ールを用意した。一対のエンボスロールのうち、一本の
金属ロール表面にエンボス形成用の縦柄用彫刻ミル（マ
ザーミル）を押しつけ、金属ロールと彫刻ミルを回転さ
せることにより、彫刻ミルの凹凸模様を金属ロールに転
写し、その後彫刻ミルをその凹凸模様の配列単位で金属
ロールの軸方向に順にずらし、上記と同様な操作で、彫
刻ミルの凹凸模様を金属ロールに転写して、刻線縦柄の
凹凸模様が規則的に形成されたエンボスロールを作製し
た。更に実施例３〜４では横柄用彫刻ミルを用いて縦柄
用彫刻ミルの転写圧の１／１０の荷重にて上記金属ロー
ル上に横柄を付与した。この際、それぞれの配置や寸法
は顕微鏡により観察した。Examples 1-4, Comparative Example 1 Various embossing rolls were prepared to form various embossing shapes. Pressing a vertical pattern engraving mill (mother mill) for embossing on the surface of one metal roll of a pair of embossing rolls, and rotating the metal roll and the engraving mill to transfer the uneven pattern of the engraving mill to the metal roll Then, the engraving mill is shifted in the axial direction of the metal roll in order of the arrangement pattern of the concavo-convex pattern, and by the same operation as above, the concavo-convex pattern of the engraving mill is transferred to the metal roll, so that A regularly formed embossing roll was produced. Further, in Examples 3 and 4, a horizontal pattern was applied on the metal roll using a horizontal pattern engraving mill at a load of 1/10 of the transfer pressure of the vertical pattern engraving mill. At this time, each arrangement and dimensions were observed with a microscope.
【００２９】熱可塑性樹脂シートとしては、「ＤＸＮ
膜」（ポリビニルブチラール樹脂シート、積水化学工業
社製）を用いた。上記エンボスロールとゴムロールとを
一対で用意し、エンボスロールを１３０℃とし、上記熱
可塑性樹脂シートを通し所定のエンボス形状を得た。実
施例１〜２の合わせガラス用中間膜に形成されたエンボ
スの形状は図１に示したとおりであり、実施例３〜４の
合わせガラス用中間膜に形成されたエンボスの形状は図
２に示したとおりであり、比較例１の合わせガラス用中
間膜に形成されたエンボスの形状は図３に示したとおり
であった。各エンボスの凸部の配置間隔、凹部の深さ、
分断壁の配置間隔、及び、分断壁の高さは表１に示した
とおりであった。As the thermoplastic resin sheet, "DXN
Membrane "(polyvinyl butyral resin sheet, manufactured by Sekisui Chemical Co., Ltd.). A pair of the embossing roll and the rubber roll were prepared, the embossing roll was set at 130 ° C., and the embossed roll was passed through the thermoplastic resin sheet to obtain a predetermined embossed shape. The shape of the emboss formed on the interlayer film for laminated glass of Examples 1 and 2 is as shown in FIG. 1, and the shape of the emboss formed on the interlayer film for laminated glass of Examples 3 and 4 is shown in FIG. As shown, the shape of the emboss formed on the interlayer film for laminated glass of Comparative Example 1 was as shown in FIG. The spacing between the protrusions of each emboss, the depth of the recess,
The arrangement intervals of the dividing walls and the heights of the dividing walls were as shown in Table 1.
【００３０】実施例１〜４及び比較例１で得られた５種
類の中間膜のそれぞれについて、エンボスの平均表面粗
さ（Ｒｚ）を以下の方法で測定した。結果は表１に示す
とおりであった。With respect to each of the five types of interlayer films obtained in Examples 1 to 4 and Comparative Example 1, the average surface roughness (Rz) of the emboss was measured by the following method. The results were as shown in Table 1.
【００３１】〔Ｒｚの測定〕デジタル型の触針電気式表
面粗さ測定器（商品名「ＳＥ−２０００」、小坂研究所
社製）により、円錐状の触針（先端曲率半径５μｍ、頂
角９０度）を用い、ＪＩＳ Ｂ ０６０１に準拠して、
中間膜のそれぞれの面のエンボスの十点平均表面粗さ
｛Ｒｚ（μｍ）｝を測定した。[Measurement of Rz] A conical stylus (tip radius of curvature 5 μm, apex angle) was measured with a digital stylus electric surface roughness meter (trade name “SE-2000”, manufactured by Kosaka Laboratory Co., Ltd.). 90 degrees) in accordance with JIS B 0601,
The ten-point average surface roughness {Rz (μm)} of the emboss on each surface of the intermediate film was measured.
【００３２】また、上記５種類の中間膜のそれぞれを使
用して、以下に示すように、減圧脱気法で予備圧着を行
い、次いで本圧着を行って、５種類の合わせガラスを作
製した。Using each of the above five types of interlayer films, pre-compression bonding was performed by a vacuum degassing method as described below, and then main bonding was performed to produce five types of laminated glass.
【００３３】〔減圧脱気法〕中間膜を二枚の透明なフロ
ートガラス板（縦３０ｃｍ×横３０ｃｍ×厚さ３ｍｍ）
の間に挟み、はみ出た部分を切り取り、得られた合わせ
ガラス構成体（積層体）をゴムバッグ内に移し、ゴムバ
ッグを吸引減圧系に接続し、外気加熱温度で加熱すると
同時に−６０ｋＰａ（絶対圧力１６ｋＰａ）の減圧下で
１０分間保持し、合わせガラス構成体（積層体）の温度
（予備圧着温度）が一定の温度となるように加熱した
後、大気圧に戻して予備圧着を終了した。上記予備圧着
時の脱気開始温度は５０℃とし、予備圧着温度は６０
℃、６５℃及び７０℃の３条件下とした。[Decompression degassing method] An intermediate film is made of two transparent float glass plates (length 30 cm × width 30 cm × thickness 3 mm).
The laminated glass structure (laminate) is transferred into a rubber bag, and the rubber bag is connected to a suction and pressure reduction system, and is heated at an outside air heating temperature and at the same time, is heated to -60 kPa (absolute). The pressure was maintained at a reduced pressure of 16 kPa) for 10 minutes, and the temperature (preliminary pressure bonding temperature) of the laminated glass structure (laminate) was heated to a constant temperature, and the pressure was returned to the atmospheric pressure to complete the preliminary pressure bonding. The deaeration starting temperature at the time of the pre-compression bonding is set to 50 ° C.
3 ° C., 65 ° C. and 70 ° C.
【００３４】〔本圧着〕上記方法で予備圧着された合わ
せガラス構成体（積層体）をオートクレーブ内に入れ、
温度１４０℃、圧力１３００ｋＰａの条件下で１０分間
保持した後、５０℃まで温度を下げ大気圧に戻すことに
より本圧着を終了して、合わせガラスを作製した。[Main Compression] The laminated glass component (laminate) pre-compressed by the above method is placed in an autoclave,
After holding at a temperature of 140 ° C. and a pressure of 1300 kPa for 10 minutes, the temperature was lowered to 50 ° C. and the pressure was returned to the atmospheric pressure to complete the final pressure bonding, and a laminated glass was produced.
【００３５】得られた５種類の合わせガラスに対して、
以下の方法でベークテストを行い、予備圧着工程での脱
気性を評価した。結果を表１に示した。 〔合わせガラスのベークテスト〕合わせガラスを１４０
℃のオーブン内で２時間加熱した。次いで、オーブンか
ら取り出して３時間放冷した後、合わせガラスの外観を
目視で観察し、合わせガラスに発泡（気泡）が生じた枚
数を調べて、脱気性を評価した。なお、テスト枚数は各
１００枚とした。With respect to the obtained five types of laminated glass,
A bake test was performed by the following method, and the deaeration in the preliminary pressure bonding step was evaluated. The results are shown in Table 1. [Laminated glass bake test] 140 laminated glass
Heated in a 2 ° C. oven for 2 hours. Next, after taking out from the oven and allowing to cool for 3 hours, the appearance of the laminated glass was visually observed, the number of foams (bubbles) generated in the laminated glass was examined, and the degassing property was evaluated. Note that the number of test sheets was 100 each.
【００３６】[0036]
【表１】 [Table 1]
【００３７】[0037]
【発明の効果】本発明は、上記構成を有することによ
り、予備圧着工程において脱気開始温度を厳密に制御す
る必要がないにもかかわらず、周縁部シール先行現象を
発生することがなく、優れた脱気性を発揮する合わせガ
ラス用中間膜を提供することができる。従って、本発明
の合わせガラス用中間膜によれば、合わせガラス作製時
の作業性に優れると共に、過酷な条件下においても気泡
の発生による品質不良を殆ど生じない高品質の合わせガ
ラスを得ることができる。また、本発明の合わせガラス
用中間膜を用いて作製された合わせガラスは、過酷な条
件下においても気泡の発生による品質不良を殆ど生じな
い高品質のものであり、自動車、車輌、航空機、建築物
等の窓ガラスとして好適に用いられる。According to the present invention having the above-described structure, even though there is no need to strictly control the deaeration start temperature in the pre-compression bonding step, the peripheral edge seal precedent phenomenon does not occur. The present invention can provide an interlayer film for laminated glass exhibiting improved degassing properties. Therefore, according to the interlayer film for a laminated glass of the present invention, it is possible to obtain a high-quality laminated glass which is excellent in workability at the time of producing a laminated glass and hardly causes poor quality due to generation of bubbles even under severe conditions. it can. Further, the laminated glass produced using the interlayer film for a laminated glass of the present invention is of high quality which hardly causes poor quality due to generation of bubbles even under severe conditions, and is used for automobiles, vehicles, aircrafts, and buildings. It is suitably used as a window glass for objects and the like.
【図１】実施例１及び実施例２で得られた合わせガラス
用中間膜のエンボス模様（凹凸模様）を示す模式図であ
る。FIG. 1 is a schematic diagram showing an embossed pattern (irregular pattern) of an interlayer film for laminated glass obtained in Example 1 and Example 2.
【図２】実施例３及び実施例４で得られた合わせガラス
用中間膜のエンボス模様（凹凸模様）を示す模式図であ
る。FIG. 2 is a schematic diagram showing an embossed pattern (irregular pattern) of an interlayer film for laminated glass obtained in Example 3 and Example 4.
【図３】比較例１で得られた合わせガラス用中間膜のエ
ンボス模様（凹凸模様）を示す模式図である。FIG. 3 is a schematic diagram showing an embossed pattern (irregular pattern) of an interlayer film for laminated glass obtained in Comparative Example 1.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｋ 101:12 Ｂ２９Ｋ 101:12 Ｂ２９Ｌ 7:00 Ｂ２９Ｌ 7:00 Ｆターム(参考） 4F071 AA15X AA24A AA28X AA30A AA33B AA33X AA50B AA53A AB28B AH03 AH07 BC01 CA01 CB06 CC02 CD01 CD02 4F209 AA25 AC03 AF01 AG01 AG05 AH25 PA04 PB02 PC01 PC06 PC12 PW43 4G061 AA13 AA18 BA01 BA02 CB05 CB19 CD18 DA23 DA29 DA30 4J002 BB071 BD031 BE061 BF031 CK021 FD026 GF00 GL00 GN00 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) // B29K 101: 12 B29K 101: 12 B29L 7:00 B29L 7:00 F term (Reference) 4F071 AA15X AA24A AA28X AA30A AA33B AA33X AA50B AA53A AB28B AH03 AH07 BC01 CA01 CB06 CC02 CD01 CD02 4F209 AA25 AC03 AF01 AG01 AG05 AH25 PA04 PB02 PC01 PC06 PC12 PW43 4G061 AA13 AA18 BA01 BA02 CB05 GD19 CB1 DA031
Claims (3)
とからなるエンボスが形成された合わせガラス用中間膜
であって、少なくとも片面の前記凹部は、溝を形成して
おり、該溝の内に分断壁を有することを特徴とする合わ
せガラス用中間膜。1. An interlayer film for laminated glass in which an embossment composed of a concave portion and a convex portion is formed on both surfaces of a thermoplastic resin sheet, wherein the concave portion on at least one surface forms a groove. An interlayer film for laminated glass, characterized by having a dividing wall inside.
とを特徴とする請求項１記載の合わせガラス用中間膜。2. The interlayer film for laminated glass according to claim 1, wherein the height of the dividing wall is smaller than the depth of the groove.
を特徴とする請求項１又は２記載の合わせガラス用中間
膜。3. The interlayer film for laminated glass according to claim 1, wherein the dividing walls are arranged at equal intervals.
Priority Applications (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000000900A JP2001192244A (en) | 2000-01-06 | 2000-01-06 | Intermediate film for laminated glass |
| AU23080/01A AU780388B2 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| US10/019,656 US6863956B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| EP00940918A EP1233007B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for Laminated Glass |
| EP20100180354 EP2292427B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass |
| PCT/JP2000/004383 WO2001002316A1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| KR1020017016819A KR100665906B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| KR1020067021276A KR100680578B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| CA 2376547 CA2376547C (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| CA002549785A CA2549785C (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass |
| BRPI0012098-7A BR0012098B1 (en) | 1999-07-01 | 2000-07-03 | intermediate layer for laminated glass. |
| MXPA02000125A MXPA02000125A (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass and laminated glass. |
| EP08152804.4A EP1932661B1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for Laminated Glass |
| DE60039250T DE60039250D1 (en) | 1999-07-01 | 2000-07-03 | Interlayer for laminated glass |
| US10/786,367 US20040191482A1 (en) | 1999-07-01 | 2004-02-26 | Interlayer for laminated glass and laminated glass |
| US11/216,125 US7150905B2 (en) | 1999-07-01 | 2005-09-01 | Interlayer for laminated glass and laminated glass |
| US11/586,577 US7378142B2 (en) | 1999-07-01 | 2006-10-26 | Interlayer for laminated glass and laminated glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000000900A JP2001192244A (en) | 2000-01-06 | 2000-01-06 | Intermediate film for laminated glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001192244A true JP2001192244A (en) | 2001-07-17 |
Family
ID=18530174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000000900A Pending JP2001192244A (en) | 1999-07-01 | 2000-01-06 | Intermediate film for laminated glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001192244A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005514306A (en) * | 2001-12-27 | 2005-05-19 | ソリユテイア・インコーポレイテツド | Glass lamination method and apparatus |
| JP2009542482A (en) * | 2006-07-07 | 2009-12-03 | クラレイ ユーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Embossed plastic sheet for composite glass |
| JP2015059052A (en) * | 2013-09-17 | 2015-03-30 | 株式会社ブリヂストン | Sheet for forming laminate, and method for producing laminate |
| JPWO2015016358A1 (en) * | 2013-08-01 | 2017-03-02 | 積水化学工業株式会社 | Laminated glass interlayer film and laminated glass |
| JPWO2015016366A1 (en) * | 2013-08-01 | 2017-03-02 | 積水化学工業株式会社 | Laminated glass interlayer film and laminated glass |
| WO2018097146A1 (en) | 2016-11-24 | 2018-05-31 | 日本ゼオン株式会社 | Adhesive sheet and laminated glass |
| JP7445664B2 (en) | 2019-01-22 | 2024-03-07 | トレデガー サーフェイス プロテクション エルエルシー | Film used as interleaf between substrates and method for producing the same |
-
2000
- 2000-01-06 JP JP2000000900A patent/JP2001192244A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005514306A (en) * | 2001-12-27 | 2005-05-19 | ソリユテイア・インコーポレイテツド | Glass lamination method and apparatus |
| US7704342B2 (en) | 2001-12-27 | 2010-04-27 | Solutia, Inc. | Glass lamination process |
| JP4699695B2 (en) * | 2001-12-27 | 2011-06-15 | ソリユテイア・インコーポレイテツド | Glass lamination method and apparatus |
| JP2009542482A (en) * | 2006-07-07 | 2009-12-03 | クラレイ ユーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Embossed plastic sheet for composite glass |
| JP4873669B2 (en) * | 2006-07-07 | 2012-02-08 | クラレイ ユーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Embossed plastic sheet for composite glass |
| JPWO2015016358A1 (en) * | 2013-08-01 | 2017-03-02 | 積水化学工業株式会社 | Laminated glass interlayer film and laminated glass |
| JPWO2015016366A1 (en) * | 2013-08-01 | 2017-03-02 | 積水化学工業株式会社 | Laminated glass interlayer film and laminated glass |
| JP2015059052A (en) * | 2013-09-17 | 2015-03-30 | 株式会社ブリヂストン | Sheet for forming laminate, and method for producing laminate |
| WO2018097146A1 (en) | 2016-11-24 | 2018-05-31 | 日本ゼオン株式会社 | Adhesive sheet and laminated glass |
| JP7445664B2 (en) | 2019-01-22 | 2024-03-07 | トレデガー サーフェイス プロテクション エルエルシー | Film used as interleaf between substrates and method for producing the same |
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