JP2022083452A5 - - Google Patents
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- JP2022083452A5 JP2022083452A5 JP2022032450A JP2022032450A JP2022083452A5 JP 2022083452 A5 JP2022083452 A5 JP 2022083452A5 JP 2022032450 A JP2022032450 A JP 2022032450A JP 2022032450 A JP2022032450 A JP 2022032450A JP 2022083452 A5 JP2022083452 A5 JP 2022083452A5
- Authority
- JP
- Japan
- Prior art keywords
- film
- pen
- height
- glass plate
- adhesive layer
- 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.)
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- 239000011521 glass Substances 0.000 claims 10
- 230000003287 optical effect Effects 0.000 claims 10
- 238000012360 testing method Methods 0.000 claims 10
- 239000012790 adhesive layer Substances 0.000 claims 8
- 239000010410 layer Substances 0.000 claims 3
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 2
- 230000001070 adhesive effect Effects 0.000 claims 2
- 238000005336 cracking Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 229920002284 Cellulose triacetate Polymers 0.000 claims 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims 1
- 238000007373 indentation Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000013191 viscoelastic testing Methods 0.000 claims 1
Claims (8)
前記厚み方向一方側は、視認側であり、
下記のペンドロップ割れ試験において前記ガラス板が割れ始めるまでのペンの落下高さＨ１が２０ｃｍ以上であり、
前記第１フィルムおよび前記第２フィルムのそれぞれは、１０μｍ以上の厚みを有し、
ナノインデンター法で測定される２５℃における前記第１接着剤層および前記第２接着剤層のそれぞれの押込弾性率は、１ＧＰａ以上であり、
前記ガラス板は、１０μｍ以上の厚みを有する、光学積層体。
＜ペンドロップ割れ試験＞
周波数１Ｈｚ、昇温速度５℃／ｍｉｎ、温度－４０℃～１５０℃、ねじりモードの動的粘弾性試験により求められる２５℃におけるせん断貯蔵弾性率Ｇ’が０．０３ＭＰａで、
厚みが１５μｍである粘着剤層を前記光学積層体の厚み方向他方面に配置する。７ｇ、ボール径０．７ｍｍのボールペンを前記第２フィルムに向けて落下させる。ペンの落下高さを３０ｃｍまで１ｃｍずつ上げ、前記ガラス板に割れが確認できたときの高さをペンドロップ割れ試験における高さＨ１として取得する。または、ペンの落下高さ３０ｃｍで前記ガラス板に割れが確認できなかったときは、３０ｃｍ以上の割れ耐久性を有する、と判断する。 A first film, a first adhesive layer, a glass plate, a second adhesive layer, and a second film are provided in order toward one side in the thickness direction,
The one side in the thickness direction is a viewing side,
The drop height H1 of the pen until the glass plate starts to crack in the following pen drop cracking test is 20 cm or more ,
Each of the first film and the second film has a thickness of 10 μm or more,
The indentation elastic modulus of each of the first adhesive layer and the second adhesive layer at 25° C. measured by a nanoindenter method is 1 GPa or more,
The optical laminate , wherein the glass plate has a thickness of 10 μm or more .
<Pen drop cracking test>
A frequency of 1 Hz, a heating rate of 5° C./min, a temperature of −40° C. to 150° C., and a shear storage modulus G′ at 25° C. obtained by a dynamic viscoelasticity test in torsional mode is 0.03 MPa,
A pressure-sensitive adhesive layer having a thickness of 15 μm is arranged on the other side in the thickness direction of the optical layered body. A 7 g ballpoint pen with a ball diameter of 0.7 mm is dropped toward the second film. The drop height of the pen is increased by 1 cm up to 30 cm, and the height at which a crack is confirmed on the glass plate is obtained as the height H1 in the pen drop crack test. Alternatively, when no cracks are found in the glass plate when the pen is dropped from a height of 30 cm, it is determined that the glass plate has crack durability of 30 cm or more.
＜ペンドロップ剥がれ試験＞
前記粘着剤層を前記光学積層体の厚み方向他方面に配置する。７ｇ、ボール径０．７ｍｍのボールペンを前記第２フィルムに向けて落下させる。ペンの落下高さを３０ｃｍまで１ｃｍずつ上げ、前記第１フィルムまたは前記第２フィルムに剥がれが確認できたときの高さをペンドロップ剥がれ試験における高さＨ２として取得する。または、前記ガラス板に割れが確認できたときには、割れ高さＨ１以上の剥がれ耐久性を有する、と判断する。
または、ペンの落下高さ３０ｃｍで前記第１フィルムおよび前記第２フィルムに剥がれが確認できなかったときは、３０ｃｍ以上の剥がれ耐久性を有する、と判断する。 2. The optical laminate according to claim 1, wherein the drop height H2 of the pen until the first film or the second film starts to peel in the following pen drop peeling test is 20 cm or more.
<Pen drop peeling test>
The pressure-sensitive adhesive layer is arranged on the other side in the thickness direction of the optical layered body. A 7 g ballpoint pen with a ball diameter of 0.7 mm is dropped toward the second film. The drop height of the pen is increased by 1 cm up to 30 cm, and the height at which peeling of the first film or the second film is confirmed is obtained as the height H2 in the pen drop peeling test. Alternatively, when a crack is confirmed in the glass plate, it is determined that the glass plate has peeling durability equal to or greater than the crack height H1.
Alternatively, when peeling is not confirmed in the first film and the second film when the pen is dropped from a height of 30 cm, it is determined that the peeling durability is 30 cm or more.
前記第１接着剤層と前記ガラス板との密着力が、３．０ｋＮ／ｍ以上であり、
前記ガラス板と前記第２接着剤層との密着力が、３．０ｋＮ／ｍ以上であり、
前記第２接着剤層と前記第２フィルムとの密着力が、３．０ｋＮ／ｍ以上である、請求項１から４のいずれか一項に記載の光学積層体。 Adhesion between the first film and the first adhesive layer is 3.0 kN/m or more,
Adhesion between the first adhesive layer and the glass plate is 3.0 kN/m or more,
The adhesive strength between the glass plate and the second adhesive layer is 3.0 kN/m or more,
5. The optical laminate according to any one of claims 1 to 4, wherein the adhesive strength between the second adhesive layer and the second film is 3.0 kN/m or more.
請求項１から７のいずれか一項に記載の光学積層体。
Further comprising a hard coat layer arranged on one side in the thickness direction of the second film,
The optical laminate according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022032450A JP7242934B2 (en) | 2020-11-24 | 2022-03-03 | optical laminate |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020194698A JP7036889B1 (en) | 2020-11-24 | 2020-11-24 | Optical laminate |
| JP2022032450A JP7242934B2 (en) | 2020-11-24 | 2022-03-03 | optical laminate |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020194698A Division JP7036889B1 (en) | 2020-11-24 | 2020-11-24 | Optical laminate |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2022083452A JP2022083452A (en) | 2022-06-03 |
| JP2022083452A5 true JP2022083452A5 (en) | 2022-10-07 |
| JP7242934B2 JP7242934B2 (en) | 2023-03-20 |
Family
ID=87654666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2022032450A Active JP7242934B2 (en) | 2020-11-24 | 2022-03-03 | optical laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7242934B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011140187A (en) | 2010-01-08 | 2011-07-21 | Teijin Chem Ltd | Laminated film, transparent conductive laminated film, and electronic component |
| JP2013184396A (en) | 2012-03-08 | 2013-09-19 | Nec Casio Mobile Communications Ltd | Protection structure for image display surface and portable terminal including the same |
| JP5883333B2 (en) | 2012-04-02 | 2016-03-15 | 日東電工株式会社 | Transparent sheet and method for producing the same |
| JP6379672B2 (en) | 2014-05-26 | 2018-08-29 | 日立化成株式会社 | Transparent substrate |
| US20200247092A1 (en) | 2017-09-29 | 2020-08-06 | Dai Nippon Printing Co., Ltd. | Optical film and image display device |
-
2022
- 2022-03-03 JP JP2022032450A patent/JP7242934B2/en active Active
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