JP2001220182A - Interlayer for laminated glass - Google Patents

Interlayer for laminated glass

Info

Publication number
JP2001220182A
JP2001220182A JP2000026652A JP2000026652A JP2001220182A JP 2001220182 A JP2001220182 A JP 2001220182A JP 2000026652 A JP2000026652 A JP 2000026652A JP 2000026652 A JP2000026652 A JP 2000026652A JP 2001220182 A JP2001220182 A JP 2001220182A
Authority
JP
Japan
Prior art keywords
laminated glass
groove
interlayer
glass
depth
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
Application number
JP2000026652A
Other languages
Japanese (ja)
Inventor
Yoshinari Sannomiya
伊成 三宮
Minoru Nakajima
稔 中嶋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP2000026652A priority Critical patent/JP2001220182A/en
Priority to PCT/JP2000/004383 priority patent/WO2001002316A1/en
Priority to EP00940918A priority patent/EP1233007B1/en
Priority to EP08152804.4A priority patent/EP1932661B1/en
Priority to KR1020067021276A priority patent/KR100680578B1/en
Priority to MXPA02000125A priority patent/MXPA02000125A/en
Priority to KR1020017016819A priority patent/KR100665906B1/en
Priority to EP20100180354 priority patent/EP2292427B1/en
Priority to DE60039250T priority patent/DE60039250D1/en
Priority to CA 2376547 priority patent/CA2376547C/en
Priority to BRPI0012098-7A priority patent/BR0012098B1/en
Priority to CA002549785A priority patent/CA2549785C/en
Priority to AU23080/01A priority patent/AU780388B2/en
Priority to US10/019,656 priority patent/US6863956B1/en
Publication of JP2001220182A publication Critical patent/JP2001220182A/en
Priority to US10/786,367 priority patent/US20040191482A1/en
Priority to US11/216,125 priority patent/US7150905B2/en
Priority to US11/586,577 priority patent/US7378142B2/en
Pending legal-status Critical Current

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
    • 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
    • B32B17/10761—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 containing vinyl acetal

Abstract

PROBLEM TO BE SOLVED: To provide an interlayer for laminated glass which allows the improvement of productivity of a degassing process and the reduction of failure due to bubbling, etc., in the production of laminated glass. SOLUTION: This interlayer for laminated glass consisting essentially of polyvinylacetal resin is provided with recessed grooves on at least one surface thereof which has embossing of random shape. Further, this interlayer for laminated glass is featured in such a manner that the height distribution of groove depth is >=5% of the groove depth, the pitch of a groove distribution is <=2 mm and the grooves are given in the flow direction of the interlayer for laminated glass.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、脱気性に優れた合
わせガラス用中間膜に関する。The present invention relates to an interlayer for laminated glass having excellent degassing properties.

【０００２】[0002]

【従来の技術】従来より、可塑化されたポリビニルアセ
タール樹脂組成物等からなる合わせガラス用中間膜（以
下、単に中間膜ともいう）を、一対のガラス板間に介在
させて貼り合わせた合わせガラスは、建築用及び自動車
等の車両用の窓ガラス用等に広く使用されている。2. Description of the Related Art Conventionally, a laminated glass in which an interlayer film for a laminated glass (hereinafter simply referred to as an intermediate film) made of a plasticized polyvinyl acetal resin composition or the like is interposed between a pair of glass plates. Is widely used for windows for buildings and vehicles such as automobiles.

【０００３】このような合わせガラスは、外部から衝撃
が加えられると、ガラス部分は破損しても、ガラスの間
に介在された中間膜は容易には破損せず、また、ガラス
の破損後においてもガラスは中間膜に貼着した状態であ
るため、その破片が飛散することが少ない。従って、車
両や建築物の中の人体がガラスの破片により傷害をうけ
ることを防止することができる。[0003] In such a laminated glass, if an external impact is applied, even if the glass portion is broken, the interlayer film interposed between the glass is not easily broken. Also, since the glass is in a state of being stuck to the interlayer film, its fragments are less likely to scatter. Therefore, it is possible to prevent a human body in a vehicle or a building from being injured by broken glass.

【０００４】また、上記合わせガラスは、通常、一対の
ガラス板の間に、中間膜を挟み、これをニップロールの
間隙に通して扱くか、又はゴムバックに入れて減圧吸引
することにより、ガラス板と中間膜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い、一体化させることにより製
造される。[0004] The above laminated glass is usually sandwiched between a pair of glass plates and handled by passing it through a gap between nip rolls, or is put in a rubber bag and suctioned under reduced pressure to form a glass plate. It is manufactured by pre-press bonding while degassing the air remaining between the intermediate films, and then heating and pressurizing in an autoclave to perform the final press bonding and to integrate.

【０００５】上記中間膜としては、透明性、接着性、耐
候性、耐貫通性等の合わせガラスとして必要な基本性能
が良好であることの他に、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、さらに、空気の巻き込み
を無くすために、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。[0005] In addition to having good basic performance required for laminated glass such as transparency, adhesion, weather resistance, penetration resistance, etc., the above-mentioned intermediate film also has the following characteristics: It is required that the workability when sandwiching the interlayer film between the glass plates is good, and that the deaeration in the pre-compression bonding step is good in order to eliminate air entrapment.

【０００６】このような要求を満たすために、通常、中
間膜には、その両面に微細な凹凸からなるエンボスが形
成されている。例えば、厚さ７６０μｍの中間膜には、
２５〜６０μｍ程度の微細な凹凸がつけられている。表
面が平滑な状態の中間膜では、ガラスとの接着力に優れ
ると同時に常温で粘着性をもつことから、中間膜同士が
くっついて剥がせなくなり、合わせガラスの製造工程で
ロール状の中間膜を巻き出せなくなったり、ガラスと付
着してずらすことができなくなり、ガラスの上で位置合
わせができなくなるなどの問題が起こる。一方、微細な
凹凸がつけられている中間膜は、予備圧着工程におい
て、ガラスと中間膜との間に存在する空気がほとんどな
くなって、良好な脱気性が得られる。残存する若干量の
空気は、本圧着工程（例えば、１３０℃×１．３ＭＰａ
×１時間）で中間膜中に溶解させることができるので透
明な合わせガラスを得ることができるのである。[0006] In order to satisfy such demands, the intermediate film is usually formed with embosses having fine irregularities on both surfaces thereof. For example, for a 760 μm thick interlayer,
Fine irregularities of about 25 to 60 μm are provided. An intermediate film with a smooth surface has excellent adhesion to glass and is tacky at room temperature, so that the intermediate films stick to each other and cannot be peeled off. Problems such as being unable to be unwound, being unable to be displaced by adhering to the glass, and being unable to be positioned on the glass are caused. On the other hand, in the intermediate film provided with fine irregularities, in the pre-compression bonding step, air existing between the glass and the intermediate film almost disappears, and good deaeration can be obtained. The remaining small amount of air is subjected to a final pressure bonding step (for example, 130 ° C. × 1.3 MPa).
(× 1 hour), it is possible to obtain a transparent laminated glass because it can be dissolved in the intermediate film.

【０００７】一般に、脱気工程である予備圧着工程とし
ては、ゴムロールを用いて合わせガラスを扱く方法とゴ
ムバッグに入れて減圧することにより合わせガラス周辺
から空気を抜き出す方法（真空バッグ方式）とがある。
例えば、真空バッグ方式における脱気工程では、まず、
十分に冷却（例えば２０℃）されたゴムバッグ内に、ガ
ラス／中間膜／ガラスの構成の合わせガラスを入れ減圧
を開始する。減圧保持時間を１０分程度とし、ガラス／
中間膜間の全体の空気を十分に除いた後に昇温し約１１
０℃まで加熱する。この時、ガラス／中間膜間はほぼ密
着し、その後、常温近くまで冷却してから合わせガラス
を取り出し、次の本圧着工程へ移行する。In general, the pre-compression bonding step, which is a deaeration step, includes a method of handling laminated glass using a rubber roll, and a method of extracting air from around the laminated glass by putting it in a rubber bag and reducing the pressure (vacuum bag method). There is.
For example, in the deaeration step in the vacuum bag method, first,
The laminated glass having the structure of glass / interlayer / glass is put into a sufficiently cooled (for example, 20 ° C.) rubber bag, and pressure reduction is started. The reduced pressure holding time was about 10 minutes, and the glass /
After sufficiently removing the entire air between the interlayer films, the temperature was increased to about 11
Heat to 0 ° C. At this time, the glass / intermediate film is almost in close contact with each other. After that, the glass is cooled to near normal temperature, the laminated glass is taken out, and the process proceeds to the next main pressure bonding step.

【０００８】上述した真空バッグ方式における脱気工程
は、加熱−冷却サイクルであるので、生産性を向上させ
るためには、ゴムバッグの初期温度を高くして、到達温
度を低くすることが要求されている。しかし、このゴム
バッグの初期温度を高くしていくと、減圧時にガラス周
辺部が先に潰れてしまい、中央部分の空気が抜けにくく
なって残るため、その結果、本圧着工程でも空気を溶解
できなくなり、発泡状態となってしまう。また、到達温
度を低くしていくと、ガラス周辺部のシールが完全でな
い部分が残り、その部分に、本圧着工程時の高圧空気が
浸入して発泡状態となる。さらに、ガラス／中間膜／ガ
ラスの構成の合わせガラスでは、ガラスの曲げ精度や自
重のかかり方などにより、ガラス同士が合わさろうとす
る部分と離れようとする部分ができることも、上述の現
象の要因となっている。[0008] Since the deaeration step in the vacuum bag method described above is a heating-cooling cycle, it is required to raise the initial temperature of the rubber bag and lower the ultimate temperature in order to improve productivity. ing. However, when the initial temperature of the rubber bag is increased, the peripheral portion of the glass is crushed first during depressurization, so that air in the central portion is difficult to escape and remains. As a result, air can be dissolved even in the final pressing step. Disappears and becomes a foamed state. Further, as the temperature reached is lowered, a portion where the seal around the glass is not perfect remains, and high-pressure air during the final pressure bonding step enters the portion to form a foamed state. Further, in a laminated glass having a glass / intermediate film / glass structure, there may be a portion where the glass members are going to be joined together and a portion where the glass members are going to be separated due to the bending accuracy of the glass and how the weight is applied. Has become.

【０００９】このような要求を満たすため、上記微細な
凹凸の形状としては、例えば、ランダムな形状（山と谷
が交互に存在する）や、四角錐、三角錐を配置した規則
的な形状などがある。特に、真空バッグ方式における脱
気工程で、ゴムバッグの初期温度を高くできてシール先
行を防止する形状としては、溝状や山脈状のエンボス形
状が提案されている。これは、円錐や三角錐等での山体
積よりも三角柱（テント形状）の山体積のほうが大きく
できるためである。具体的には、例えば、特表平９−５
０８０７８号公報では、真空バッグ方式には、溝を用い
て空気の抜け道を造る方法が、減圧時のシール先行を防
止するのに有効であることが開示されている。In order to satisfy such demands, examples of the shape of the fine unevenness include, for example, a random shape (peaks and valleys alternately exist), a regular shape in which square pyramids and triangular pyramids are arranged, and the like. There is. In particular, a groove-shaped or mountain-shaped embossed shape has been proposed as a shape capable of increasing the initial temperature of the rubber bag in the degassing step in the vacuum bag method and preventing the seal from leading up. This is because the mountain volume of a triangular prism (tent shape) can be larger than the mountain volume of a cone or a triangular pyramid. Specifically, for example, Japanese Translation of PCT International Publication No. 9-5
Japanese Patent Application Publication No. 08078 discloses that in the vacuum bag method, a method of forming an air passage using a groove is effective for preventing a seal from leading up at the time of pressure reduction.

【００１０】しかし、この方法では、溝形状の深さ、
幅、ピッチを変更しても、ゴムバッグの初期温度を高く
することができるものの、到達温度も同様に高くする必
要があり、到達温度を低くすると本圧着時に空気の浸入
を起こして発泡するという問題があった。即ち、従来の
ランダム形状のエンボスでは、初期温度２０℃で到達温
度８５℃まで加熱すればよいものが、上記の方法では初
期温度３５℃で到達温度は９５℃まで加熱しなければ発
泡してしまい、溝又は山脈の深さ（高さ）、幅、ピッチ
の最適化を図っても、ある体積までエンボスを潰すこと
が必要なので、初期温度と到達温度とはほぼ平行に上方
へ移動することとなり、脱気工程である予備圧着工程の
生産性を向上させる効果が小さかった。However, in this method, the depth of the groove shape,
Even if the width and pitch are changed, the initial temperature of the rubber bag can be raised, but the ultimate temperature must be increased as well. There was a problem. That is, in the conventional embossing of a random shape, what is necessary is to heat to an ultimate temperature of 85 ° C. at an initial temperature of 20 ° C., but in the above method, if the initial temperature is 35 ° C. and the ultimate temperature is not heated to 95 ° C., foaming occurs Even when optimizing the depth (height), width, and pitch of a groove or mountain range, it is necessary to crush the emboss to a certain volume, so that the initial temperature and the ultimate temperature move upward substantially in parallel. In addition, the effect of improving the productivity in the preliminary pressure bonding step as the degassing step was small.

【００１１】[0011]

【発明が解決しようとする課題】本発明は、上記従来の
問題点を解決するため、合わせガラスの製造において、
脱気工程の生産性向上と発泡等による不具合の削減がで
きる合わせガラス用中間膜を提供することを課題とす
る。SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems by producing a laminated glass.
An object of the present invention is to provide an interlayer film for laminated glass that can improve the productivity of the deaeration step and reduce defects due to foaming and the like.

【００１２】[0012]

【課題を解決するための手段】請求項１記載の発明（以
下、発明１という）による合わせガラス用中間膜は、少
なくとも一方の表面に、凹形状の溝が付与された合わせ
ガラス用中間膜であって、上記溝が、溝の断面積が一定
で、最大溝深さに対し５％以上の深さをもつ溝が付与さ
れた深さ分布を有することを特徴とする。The interlayer film for laminated glass according to the invention of claim 1 (hereinafter referred to as invention 1) is an interlayer film for laminated glass having a concave groove on at least one surface. The groove has a depth distribution in which a groove having a constant sectional area and a depth of 5% or more of the maximum groove depth is provided.

【００１３】請求項２記載の発明（以下、発明２とい
う）による合わせガラス用中間膜は、上記発明１による
合わせガラス用中間膜による凹形状の溝において、最大
溝深さに対し５％以上の深さをもつ溝が付与されるピッ
チが１０ｍｍ以下であることを特徴とする。[0013] The interlayer film for laminated glass according to the invention of claim 2 (hereinafter referred to as invention 2) has a concave groove formed by the interlayer film for laminated glass according to the above invention 1 which is at least 5% of the maximum groove depth. The pitch at which the grooves having a depth are provided is 10 mm or less.

【００１４】請求項３記載の発明（以下、発明３とい
う）による合わせガラス用中間膜は、上記発明１又は２
による合わせガラス用中間膜において、凹形状の溝が、
合わせガラス用中間膜の流れ方向に付与されていること
を特徴とする。以下、本発明を詳しく説明する。The interlayer film for laminated glass according to the invention described in claim 3 (hereinafter referred to as invention 3) is the same as the above invention 1 or 2.
In the interlayer film for laminated glass, the concave groove is
It is provided in the flow direction of the interlayer film for laminated glass. Hereinafter, the present invention will be described in detail.

【００１５】本発明による中間膜においては、凹形状の
溝が付与され、且つ、上記溝の断面積を一定に保ちつ
つ、溝の深さを部分的に浅くさせることにより、最大溝
深さに対し５％以上の深さをもつ溝が付与された深さ分
布を有するため、真空バッグ方式における脱気工程にお
いて、減圧開始時には空気の通り道が確保され、昇温時
には浅い部分がガラスと密着しやすくなりシールするこ
ととなる。In the intermediate film according to the present invention, a groove having a concave shape is provided, and while the cross-sectional area of the groove is kept constant, the depth of the groove is partially reduced so that the maximum groove depth is increased. On the other hand, since it has a depth distribution with a groove having a depth of 5% or more, in the deaeration step in the vacuum bag method, an air passage is secured at the start of depressurization, and a shallow portion adheres to the glass at the time of temperature rise. It becomes easy to seal.

【００１６】また、本発明による中間膜による凹形状の
溝において、最大溝深さに対し５％以上の深さをもつ溝
が付与されるピッチが１０ｍｍ以下であることが好まし
く、２ｍｍ以下であることがより好ましい。このピッチ
が１０ｍｍを超えると、脱気工程において、合わせガラ
スの周辺部分の発泡が問題となることがある。Further, in the concave groove formed by the intermediate film according to the present invention, the pitch at which the groove having a depth of 5% or more of the maximum groove depth is provided is preferably 10 mm or less, and more preferably 2 mm or less. Is more preferable. If this pitch exceeds 10 mm, foaming of the peripheral portion of the laminated glass may cause a problem in the degassing step.

【００１７】さらに、本発明による中間膜においては、
凹形状の溝が、中間膜の流れ方向に付与されていること
が好ましい。それにより、転写させるためのロール形状
の成形が容易であるとともに、中間膜への転写も容易と
なる。また、扱き方式における脱気工程において、空気
の扱き方向が中間膜の流れ方向であることからも好まし
い。Further, in the interlayer according to the present invention,
Preferably, a concave groove is provided in the flow direction of the intermediate film. This facilitates the formation of the roll shape for the transfer and the transfer to the intermediate film. Further, in the deaeration step in the handling method, it is preferable that the handling direction of air is the flow direction of the intermediate film.

【００１８】本発明の凹形状の溝は、中間膜の少なくと
も一方の表面に付与され、両面に付与されるのが好まし
い。片面に付与される場合、例えば、ガラス内面の粗さ
分布がある場合や黒セラ印刷による段差などを吸収する
面のみに用いる場合、本発明の中間膜を用いることで発
泡を防止することができる。The concave groove of the present invention is provided on at least one surface of the intermediate film, and is preferably provided on both surfaces. When applied to one side, for example, when there is a roughness distribution on the inner surface of the glass or when used only on a surface that absorbs a step due to black ceramic printing, foaming can be prevented by using the intermediate film of the present invention. .

【００１９】本発明による中間膜は、真空バッグ方式に
おける脱気工程において好適に用いられるが、溝の粗さ
を細かくすること、例えば溝深さを３０μ程度より小さ
くすることにより、扱き方式における脱気工程において
も用いることができる。The interlayer film according to the present invention is preferably used in the deaeration step in the vacuum bag method. However, by reducing the roughness of the groove, for example, by reducing the groove depth to less than about 30 μm, the intermediate film can be used in the deaeration step. It can also be used in the air step.

【００２０】上記凹形状の溝を付与する方法としては、
例えば、金属ロール又は平板（プレス板）の表面を、凸
状（山脈状）に加工して、それを中間膜に転写させる方
法が挙げられる。As a method of providing the above-mentioned concave groove,
For example, there is a method in which the surface of a metal roll or a flat plate (press plate) is processed into a convex shape (mountain-like shape) and is transferred to an intermediate film.

【００２１】また、上記凹形状の溝において、溝の断面
積を一定にして溝深さを変化させるためには、金属ロー
ル又は平板（プレス板）の表面の山を、部分的に凹ませ
ることにより可能であり、特に、特定形状のミルをこれ
らの表面に押しつけることにより溝深さを変化させる方
法は、得られる溝の断面積を一定に保つことができるた
め好ましい。これに対して、金属ロール又は平板（プレ
ス板）の表面の山脈を、バイト等で削って山高さを減ら
すと、その部分の断面積は減少してしまうことになる。Further, in order to change the groove depth while keeping the cross-sectional area of the groove constant in the concave groove, the peak of the surface of the metal roll or the flat plate (press plate) is partially depressed. In particular, a method of changing the groove depth by pressing a mill having a specific shape against these surfaces is preferable because the cross-sectional area of the obtained groove can be kept constant. On the other hand, if the mountain range on the surface of the metal roll or the flat plate (press plate) is cut with a cutting tool or the like to reduce the mountain height, the cross-sectional area of that portion will be reduced.

【００２２】本発明による中間膜においては、材質は特
に限定されないが、中でも、ポリビニルアセタール樹脂
が主成分として用いられることが好ましく、このポリビ
ニルアセタール樹脂としては、従来から中間膜に用いら
れているものが使用され、具体的には、ブチラール化度
６０〜７０モル％、重合度１０００〜２０００のポリビ
ニルブチラール樹脂が好適に使用される。The material of the intermediate film according to the present invention is not particularly limited, but among them, polyvinyl acetal resin is preferably used as a main component. Specifically, polyvinyl butyral resin having a butyralization degree of 60 to 70 mol% and a polymerization degree of 1000 to 2000 is preferably used.

【００２３】さらに、上記ポリビニルアセタール樹脂を
可塑化させるために一般に用いられる可塑剤としては、
例えば、エチレングリコールジ−２−エチルブチレー
ト、１，３−プロピレングリコールジ−２−エチルブチ
レート、１，４−プロピレングリコールジ−２−エチル
ブチレート、１，４−ブチレングリコールジ−２−エチ
ルブチレート、１，２−ブチレングリコールジ−２−エ
チルブチレート、ジエチレングリコールジ−２−エチル
ブチレート、ジエチレングリコールジ−２−エチルヘキ
ソエート、ジプロピレングリコールジ−２−エチルブチ
レート、トリエチレングリコールジ−２−エチルペント
エート、トリエチレングリコールジ−２−エチルヘキソ
エート、テトラエチレングリコールジ−２−エチルブチ
レート、ジエチレングリコールジカプリエート、トリエ
チレングリコールジカプリエート等が挙げられる。ま
た、本発明においては、ポリビニルアセタール樹脂１０
０重量部に対して、これら可塑剤の添加量は２０〜６０
重量部の範囲が好ましい。Further, plasticizers generally used for plasticizing the polyvinyl acetal resin include:
For example, ethylene glycol di-2-ethyl butyrate, 1,3-propylene glycol di-2-ethyl butyrate, 1,4-propylene glycol di-2-ethyl butyrate, 1,4-butylene glycol di-2- Ethyl butyrate, 1,2-butylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethyl butyrate, diethylene glycol di-2-ethylhexoate, dipropylene glycol di-2-ethyl butyrate, triethylene Glycol di-2-ethylpentoate, triethylene glycol di-2-ethylhexoate, tetraethylene glycol di-2-ethylbutyrate, diethylene glycol dicapryate, triethylene glycol dicapryate and the like can be mentioned. Further, in the present invention, the polyvinyl acetal resin 10
The amount of these plasticizers is 20 to 60 parts by weight based on 0 parts by weight.
A range of parts by weight is preferred.

【００２４】また、本発明の中間膜には、必要に応じ
て、熱安定剤、紫外線吸収剤、接着力調整剤などの各種
添加剤が用いられてもよい。The intermediate film of the present invention may contain various additives such as a heat stabilizer, an ultraviolet absorber and an adhesion regulator, if necessary.

【００２５】本発明の中間膜を用いて得られる合わせガ
ラスのガラスとしては、一般的な無機ガラスのみなら
ず、有機ガラスも用いることができる。これらの有機ガ
ラスとしては、例えば、ポリカーボネート板、ポリメチ
ルメタクリレート板等が挙げられ、無機ガラスと比較し
て密着力を上げることが難しいので、一般的には表面を
処理して用いられる。As the glass of the laminated glass obtained by using the interlayer film of the present invention, not only general inorganic glass but also organic glass can be used. Examples of the organic glass include a polycarbonate plate and a polymethyl methacrylate plate. Since it is difficult to increase the adhesive strength as compared with the inorganic glass, the organic glass is generally used after treating the surface.

【００２６】[0026]

【発明の実施の形態】本発明をさらに詳しく説明するた
め以下に実施例を挙げるが、本発明はこれら実施例のみ
に限定されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

【００２７】（実施例１）＃３６アルミナを吹き付けて
表面粗さ約６０μｍをもつ金属ロールの表面に、離型剤
処理を行った後、１００℃で中間膜表面へ形状転写を行
い、表面粗さ３０μｍのランダム形状のエンボスを有す
る中間膜を得た。別の金属ロール表面に、三角ミルを押
しつけることで、金属ロール表面に深さ２００μｍの溝
をつけ、更に直交する三角ミルを押しつけることによ
り、溝の深さ（中間膜では底面）を１５μｍ減らしたロ
ール表面を作製した。次に、このロール表面を、上記の
ランダム形状のエンボスを有する中間膜表面へ形状転写
を行い、深さ５５μｍ、幅６０μｍの溝に、深さ４０μ
ｍ、幅８０μｍの溝部分が５００μｍのピッチで存在
し、溝間隔が３００μｍである中間膜を得た。Example 1 A surface of a metal roll having a surface roughness of about 60 μm was sprayed with # 36 alumina to perform a release agent treatment, and then the shape was transferred to the surface of an intermediate film at 100 ° C. to obtain a surface roughness. An intermediate film having a random emboss of 30 μm in thickness was obtained. By pressing a triangular mill on the surface of another metal roll, a groove having a depth of 200 μm was formed on the surface of the metal roll, and by further pressing an orthogonal triangular mill, the depth of the groove (the bottom surface in the case of the interlayer) was reduced by 15 μm. A roll surface was prepared. Next, the surface of this roll is transferred to the surface of the intermediate film having the above-mentioned random shape emboss, and the groove having a depth of 55 μm and a width of 60 μm is transferred to a groove having a depth of 40 μm.
An intermediate film having groove portions having a width of 80 μm and a pitch of 500 μm was obtained with a groove interval of 300 μm.

【００２８】（実施例２）金属ロールの表面を中間膜表
面へ形状転写する圧力条件を変更したこと以外は、実施
例１と同様にして、ランダム形状のエンボス粗さ３０μ
ｍミクロンを有し、深さ５５μｍ、幅６０μｍの溝に、
深さ５０μｍ、幅７０μｍの溝部分が５００μｍのピッ
チで存在する中間膜を得た。(Example 2) The emboss roughness of the random shape was 30 μm in the same manner as in Example 1 except that the pressure conditions for transferring the shape of the surface of the metal roll to the surface of the intermediate film were changed.
having a depth of 55 μm and a width of 60 μm
An intermediate film in which groove portions having a depth of 50 μm and a width of 70 μm were present at a pitch of 500 μm was obtained.

【００２９】（比較例１）金属ロールの表面を中間膜表
面へ形状転写する圧力条件を変更し、又、凹形状の溝を
付与しないこと以外は、実施例１と同様にして、表面粗
さ５５μｍのランダム形状のエンボスを有する中間膜を
得た。(Comparative Example 1) The surface roughness was changed in the same manner as in Example 1 except that the pressure conditions for transferring the shape of the surface of the metal roll to the surface of the intermediate film were changed, and that no concave grooves were provided. An interlayer having a random emboss of 55 μm was obtained.

【００３０】（比較例２）凹形状の溝を付与しないこと
以外は、実施例１と同様にして、表面粗さ３０μｍのラ
ンダム形状のエンボスを有する中間膜を得た。Comparative Example 2 An intermediate film having a random-shaped embossment having a surface roughness of 30 μm was obtained in the same manner as in Example 1 except that no concave groove was provided.

【００３１】（比較例３）四角錐が均一に並んだエンボ
ス形状を金属ロールに加工し、この金属ロールの表面を
中間膜表面へ形状転写させることにより、表面粗さ７０
μｍの中間膜を得た。(Comparative Example 3) An embossed shape in which square pyramids were uniformly arranged was processed into a metal roll, and the surface of the metal roll was transferred to the intermediate film surface to obtain a surface roughness of 70.
A μm interlayer was obtained.

【００３２】（比較例４）金属ロールの表面を中間膜表
面へ形状転写する圧力条件を変更したこと以外は、比較
例３と同様にして、表面粗さ３５μｍの中間膜を得た。Comparative Example 4 An intermediate film having a surface roughness of 35 μm was obtained in the same manner as in Comparative Example 3 except that the pressure conditions for transferring the shape of the surface of the metal roll to the surface of the intermediate film were changed.

【００３３】（比較例５）実施例１と同様にして、表面
粗さ３０μｍのランダム形状のエンボスを有する中間膜
を得た。次に、山状の溝を入れた鉄ロール表面を作製
し、このロール表面を、上記のランダム形状のエンボス
を有する中間膜表面へ形状転写を行い、深さ５５μｍ、
幅６０μｍの三角波状の溝で、溝間隔が３００μｍの中
間膜を得た。(Comparative Example 5) In the same manner as in Example 1, an intermediate film having a randomly-shaped embossment having a surface roughness of 30 µm was obtained. Next, an iron roll surface having a mountain-shaped groove was prepared, and the shape of the roll surface was transferred to the surface of the intermediate film having the above-described random shape emboss, and the depth was 55 μm.
An intermediate film having a triangular-wave-shaped groove having a width of 60 μm and a groove interval of 300 μm was obtained.

【００３４】実施例及び比較例で得られた中間膜の性能
（脱気性）を下記の方法で評価した。その結果は表１に
示すとおりであった。The performance (degassing) of the interlayer films obtained in Examples and Comparative Examples was evaluated by the following method. The results were as shown in Table 1.

【００３５】・脱気性の評価中間膜の両側から透明な２
ｍｍ厚みのガラス板で挟み、得られた合わせガラスを、
表１に示した初期温度のゴムバック内に入れ、ゴムバッ
クを吸引減圧系に接続し、減圧を開始する。減圧を１０
分間程保持した後、表１に示した到達温度まで加熱し
て、その後冷却して合わせガラスを取り出し、その発泡
状態を観察した。尚、発泡無しを○、発泡ありを×とし
て評価した。・ Evaluation of degassing property
sandwiched between glass plates with a thickness of mm
The rubber bag is placed in the rubber bag at the initial temperature shown in Table 1, the rubber bag is connected to the suction pressure reducing system, and pressure reduction is started. Decompression 10
After holding for about a minute, the laminated glass was heated to the ultimate temperature shown in Table 1 and then cooled to take out the laminated glass, and its foaming state was observed. Incidentally, no foaming was evaluated as ○, and foaming was evaluated as ×.

【００３６】[0036]

【表１】 [Table 1]

【００３７】表１から明らかなように、本発明による実
施例の中間膜は、減圧初期温度を高くし、到達温度を低
くすることができて、予備圧着工程での脱気性に優れて
いる。As is clear from Table 1, the intermediate films of the examples according to the present invention can increase the initial temperature under reduced pressure and lower the ultimate temperature, and are excellent in deaeration in the pre-compression bonding step.

【００３８】[0038]

【発明の効果】以上述べたように、本発明による合わせ
ガラス用中間膜は、合わせガラスの製造において、予備
圧着工程での脱気性に優れているので、脱気工程の生産
性向上と発泡等による不具合の削減により歩留まりの向
上を図ることができる。As described above, the interlayer film for laminated glass according to the present invention is excellent in deaeration in the pre-compression bonding step in the production of a laminated glass, so that productivity in the deaeration step, foaming, etc. are improved. As a result, the yield can be improved by reducing defects.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 少なくとも一方の表面に、凹形状の溝が
付与された合わせガラス用中間膜であって、上記溝が、
溝の断面積が一定で、最大溝深さに対し５％以上の深さ
をもつ溝が付与された深さ分布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 provided with a concave groove on at least one surface, wherein the groove is
An interlayer film for laminated glass, wherein the groove has a constant cross-sectional area and a depth distribution in which a groove having a depth of 5% or more of a maximum groove depth is provided. 【請求項２】 凹形状の溝において、最大溝深さに対し
５％以上の深さをもつ溝が付与されるピッチが１０ｍｍ
以下であるこ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. In the concave groove, a pitch at which a groove having a depth of 5% or more of a maximum groove depth is provided is 10 mm.
The interlayer film for laminated glass according to claim 1, wherein: 【請求項３】 凹形状の溝が、合わせガラス用中間膜の
流れ方向に付与されていること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 concave groove is provided in a flow direction of the interlayer film for laminated glass.
JP2000026652A 1999-07-01 2000-02-03 Interlayer for laminated glass Pending JP2001220182A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
JP2000026652A JP2001220182A (en) 2000-02-03 2000-02-03 Interlayer for laminated glass
CA 2376547 CA2376547C (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.
EP08152804.4A EP1932661B1 (en) 1999-07-01 2000-07-03 Interlayer for Laminated Glass
KR1020067021276A KR100680578B1 (en) 1999-07-01 2000-07-03 Interlayer for laminated glass and laminated glass
MXPA02000125A MXPA02000125A (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
EP20100180354 EP2292427B1 (en) 1999-07-01 2000-07-03 Interlayer for laminated glass
DE60039250T DE60039250D1 (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
EP00940918A EP1233007B1 (en) 1999-07-01 2000-07-03 Interlayer for Laminated Glass
CA002549785A CA2549785C (en) 1999-07-01 2000-07-03 Interlayer for laminated glass and 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
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
JP2000026652A JP2001220182A (en) 2000-02-03 2000-02-03 Interlayer for laminated glass

Publications (1)

Publication Number Publication Date
JP2001220182A true JP2001220182A (en) 2001-08-14

Family

ID=18552362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000026652A Pending JP2001220182A (en) 1999-07-01 2000-02-03 Interlayer for laminated glass

Country Status (1)

Country Link
JP (1) JP2001220182A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097146A1 (en) 2016-11-24 2018-05-31 日本ゼオン株式会社 Adhesive sheet and laminated glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018097146A1 (en) 2016-11-24 2018-05-31 日本ゼオン株式会社 Adhesive sheet and laminated glass

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