JP2020095287A5 - - Google Patents
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- JP2020095287A5 JP2020095287A5 JP2020039592A JP2020039592A JP2020095287A5 JP 2020095287 A5 JP2020095287 A5 JP 2020095287A5 JP 2020039592 A JP2020039592 A JP 2020039592A JP 2020039592 A JP2020039592 A JP 2020039592A JP 2020095287 A5 JP2020095287 A5 JP 2020095287A5
- Authority
- JP
- Japan
- Prior art keywords
- film
- strain
- polarizing plate
- resin
- measuring
- 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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- 239000010408 film Substances 0.000 claims 29
- 230000001681 protective Effects 0.000 claims 7
- 229920005992 thermoplastic resin Polymers 0.000 claims 4
- 229920001225 Polyester resin Polymers 0.000 claims 3
- 239000000853 adhesive Substances 0.000 claims 3
- 230000001070 adhesive Effects 0.000 claims 3
- 239000000088 plastic resin Substances 0.000 claims 2
- 239000004645 polyester resin Substances 0.000 claims 2
- 229920005672 polyolefin resin Polymers 0.000 claims 2
- 239000004925 Acrylic resin Substances 0.000 claims 1
- 229920000178 Acrylic resin Polymers 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims 1
- 241000352457 Shivajiella indica Species 0.000 claims 1
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 238000000691 measurement method Methods 0.000 claims 1
- 229920005668 polycarbonate resin Polymers 0.000 claims 1
- 239000004431 polycarbonate resin Substances 0.000 claims 1
- 229920005678 polyethylene based resin Polymers 0.000 claims 1
- 229920005673 polypropylene based resin Polymers 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 239000010409 thin film Substances 0.000 claims 1
Claims (7)
前記偏光板のもう一方の面に厚み３〜２５μｍである粘着剤層を介して、離型処理された熱可塑性樹脂フィルムで構成された剥離フィルムが剥離可能に積層され、
前記偏光板は、偏光子を含み、該偏光子の一方の面に接着剤層を介して保護フィルムが積層され、もう一方の面に粘着剤層を介して輝度向上フィルムが積層された層構成であり、
前記表面保護フィルムを測定フィルムとして、以下の測定方法により測定される最大の力（Ｆ（Ｎ））をＦ３とし、歪み（Ｓ（ｍｍ））をＳ３としたときに最大の力Ｆ３（Ｎ）と歪みＳ３（ｍｍ）との積（Ｆ３（Ｎ）×Ｓ３（ｍｍ））として表される剛性Ｋ３が０．１４Ｎ・ｍｍ以上０．７５Ｎ・ｍｍ以下である積層体であって、
前記偏光板と前記表面保護フィルムとからなる層を測定用フィルムとして、以下の測定方法により測定される最大の力（Ｆ（Ｎ））をＦ１とし、歪み（Ｓ（ｍｍ））をＳ１としたときに、最大の力Ｆ１（Ｎ）と歪みＳ１（ｍｍ）との積（Ｆ１（Ｎ）×Ｓ１（ｍｍ））として表される剛性Ｋ１が３．８Ｎ・ｍｍ以上９．１Ｎ・ｍｍ以下であり、
前記偏光板を測定フィルムとして前記測定方法により測定される最大の力（Ｆ（Ｎ））をＦ２（Ｎ）とし、歪み（Ｓ（ｍｍ））をＳ２としたときに最大の力Ｆ２（Ｎ）と歪みＳ２（ｍｍ）との積として表される剛性Ｋ２が０．１０Ｎ・ｍｍ以上１．００Ｎ・ｍｍ以下であり、
前記熱可塑性樹脂フィルムは、ポリオレフィン系樹脂、環状ポリオレフィン系樹脂、ポリエステル系樹脂ポリカーボネート系樹脂または（メタ）アクリル系樹脂から構成され、厚みが３０〜８０μｍであり、
前記剥離フィルムは、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリエステル系樹脂から構成され、厚みが１０〜５０μｍであり、
前記偏光板と前記剥離フィルムとの間の密着力は０．０２〜０．０５Ｎ／２５ｍｍであり、前記偏光板と前記表面保護フィルムとの間の密着力よりも小さい積層体。
測定方法：
上面から見て中央に円形の貫通孔を有し、上面における貫通孔の直径が３０ｍｍであり、側面から見た貫通孔の形状が柱状の下部と半球状の上部とによって構成される形状である測定台に、
２５ｍｍ×４３ｍｍの矩形の測定用フィルムを載置し、
該測定用フィルムの上方から、先端が球形であり先端径が１ｍｍφであり曲率半径が０．５ｍｍであるニードルを、該ニードルが測定台の貫通孔の中心を通るように、１．０ｃｍ／秒の速度で垂直に降下させ、
ニードルの先端が測定用フィルムに接してから、該フィルムがたわんだ状態を保持する最大の荷重を最大の力Ｆ（Ｎ）として測定し、そのときのフィルムの歪みＳ（ｍｍ）を測定する。 A surface protective film containing a plastic resin film and an adhesive layer laminated on the plastic resin film is detachably laminated on one surface of the polarizing plate.
A release film composed of a release-treated thermoplastic resin film is laminated on the other surface of the polarizing plate via a pressure-sensitive adhesive layer having a thickness of 3 to 25 μm so as to be removable.
The polarizing plate includes a polarizing element, and a protective film is laminated on one surface of the polarizing element via an adhesive layer, and a brightness improving film is laminated on the other surface via an adhesive layer. And
When the surface protective film is used as a measuring film, the maximum force (F (N)) measured by the following measuring method is F3, and the strain (S (mm)) is S3, the maximum force F3 (N). A laminated body having a rigidity K3 expressed as the product of the strain S3 (mm) and the strain S3 (mm) (F3 (N) × S3 (mm)) of 0.14 N · mm or more and 0.75 N · mm or less.
The layer composed of the polarizing plate and the surface protective film was used as a measuring film, the maximum force (F (N)) measured by the following measuring method was F1, and the strain (S (mm)) was S1. Sometimes, the rigidity K1 expressed as the product (F1 (N) × S1 (mm)) of the maximum force F1 (N) and the strain S1 (mm) is 3.8 N ・ mm or more and 9.1 N ・ mm or less. Oh it is,
When the maximum force (F (N)) measured by the measurement method is F2 (N) and the strain (S (mm)) is S2 using the polarizing plate as a measurement film, the maximum force F2 (N) The rigidity K2 expressed as the product of the strain S2 (mm) is 0.10 N ・ mm or more and 1.00 N ・ mm or less.
The thermoplastic resin film is composed of a polyolefin resin, a cyclic polyolefin resin, a polyester resin, a polycarbonate resin, or a (meth) acrylic resin, and has a thickness of 30 to 80 μm.
The release film is composed of a polyethylene-based resin, a polypropylene-based resin, and a polyester-based resin, and has a thickness of 10 to 50 μm.
A laminate having an adhesion between the polarizing plate and the release film of 0.02 to 0.05 N / 25 mm, which is smaller than the adhesion between the polarizing plate and the surface protective film .
Measuring method:
It has a circular through hole in the center when viewed from the upper surface, the diameter of the through hole on the upper surface is 30 mm, and the shape of the through hole when viewed from the side surface is a shape composed of a columnar lower portion and a hemispherical upper portion. On the measuring table
A 25 mm x 43 mm rectangular measuring film is placed on it.
From above the measuring film, a needle having a spherical tip, a tip diameter of 1 mmφ, and a radius of curvature of 0.5 mm is passed through the center of the through hole of the measuring table at 1.0 cm / sec. Descent vertically at the speed of
After the tip of the needle comes into contact with the measuring film, the maximum load that keeps the film in a bent state is measured as the maximum force F (N), and the strain S (mm) of the film at that time is measured.
子である請求項１〜請求項５のいずれかに記載の積層体。The laminate according to any one of claims 1 to 5, which is a child.
当該積層体から剥離フィルムを剥離する工程を含む表面保護フィルム付き偏光板の製造方法。 A step of fixing the surface protective film in the laminate according to any one of claims 1 to 6 on a holding table with an adhesion force of 0.1 to 0.3 N / 60 mm.
A method for manufacturing a polarizing plate with a surface protective film, which comprises a step of peeling a release film from the laminate.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017210092 | 2017-10-31 | ||
| JP2017210092 | 2017-10-31 | ||
| JP2018082808 | 2018-04-24 | ||
| JP2018082808 | 2018-04-24 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018194864A Division JP2019191551A (en) | 2017-10-31 | 2018-10-16 | Laminate body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020095287A JP2020095287A (en) | 2020-06-18 |
| JP2020095287A5 true JP2020095287A5 (en) | 2021-10-14 |
Family
ID=66295665
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018194864A Pending JP2019191551A (en) | 2017-10-31 | 2018-10-16 | Laminate body |
| JP2020039592A Pending JP2020095287A (en) | 2017-10-31 | 2020-03-09 | Laminate body |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018194864A Pending JP2019191551A (en) | 2017-10-31 | 2018-10-16 | Laminate body |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JP2019191551A (en) |
| KR (1) | KR20190049493A (en) |
| CN (1) | CN109725377A (en) |
| TW (1) | TWI791058B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7469889B2 (en) * | 2020-01-28 | 2024-04-17 | 住友化学株式会社 | Optical laminate and method for manufacturing display device |
| CN115151967B (en) * | 2020-02-28 | 2024-05-10 | 住友化学株式会社 | Optical laminate and flexible image display device |
| JP7469087B2 (en) * | 2020-03-18 | 2024-04-16 | 住友化学株式会社 | Optical film and flexible display device |
| WO2021205727A1 (en) | 2020-04-09 | 2021-10-14 | 住友化学株式会社 | Optical laminate and peeling method |
| JP2023076153A (en) * | 2021-11-22 | 2023-06-01 | 住友化学株式会社 | optical laminate |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3311032B2 (en) | 1992-07-28 | 2002-08-05 | 株式会社東芝 | Film peeling method and apparatus |
| CN105717569A (en) * | 2014-12-18 | 2016-06-29 | 住友化学株式会社 | Polarizing plate with protection film and laminated body comprising same |
| JP2016118771A (en) * | 2014-12-18 | 2016-06-30 | 住友化学株式会社 | Polarizing plate with protective film and laminate including the same |
| KR102641791B1 (en) * | 2015-08-24 | 2024-03-04 | 닛토덴코 가부시키가이샤 | Optical member with surface protection film |
| JP7154733B2 (en) * | 2015-08-24 | 2022-10-18 | 日東電工株式会社 | Optical components with surface protection film |
| JP7334024B2 (en) * | 2016-02-08 | 2023-08-28 | 日東電工株式会社 | Optical film and optical display panel |
| JP2017181597A (en) * | 2016-03-28 | 2017-10-05 | 住友化学株式会社 | Optical film and polarizing plate |
| JP6905312B2 (en) * | 2016-03-30 | 2021-07-21 | 日東電工株式会社 | Optical film, peeling method and manufacturing method of optical display panel |
-
2018
- 2018-10-16 JP JP2018194864A patent/JP2019191551A/en active Pending
- 2018-10-25 TW TW107137760A patent/TWI791058B/en active
- 2018-10-25 KR KR1020180128150A patent/KR20190049493A/en not_active Application Discontinuation
- 2018-10-29 CN CN201811267569.9A patent/CN109725377A/en active Pending
-
2020
- 2020-03-09 JP JP2020039592A patent/JP2020095287A/en active Pending
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