Polarizing plate, heat formed body formed thereof, and heat formed body manufacturing method
There is provided a polarizing plate comprising a polarizing film with a thickness of 20 μm or less, wherein the amount of a non-oriented amorphous part in the polarizing film is 55 to 70%. Here the amount of an oriented crystalline part in the polarizing film is preferably 10 to 15%. By thermoforming the polarizing plate, there can be provided a thermoformed article having sufficient polarization performance and free from cracks even with a large deformation amount during thermoforming.
1 . A polarizing plate comprising a polarizing film with a thickness of 20 μm or less, wherein the amount of a non-oriented amorphous part in the polarizing film is 55% or more and 70% or less.
2 . The polarizing plate according to claim 1 , wherein the amount of an oriented crystalline part in the polarizing film is 10% or more and 15% or less.
3 . A thermoformed article formed by thermoforming the polarizing plate according to claim 1 .
4 . The thermoformed article according to claim 3 , having a maximum elongation coefficient of 35% or less.
5 . The thermoformed article according to claim 3 , wherein a crack rate is 0 to 40% when thermoforming is conducted using a mold which has a spherical concave having a curvature radius of 5.8 cm and a depth of 2.8 cm.
6 . The thermoformed article according to claim 3 , wherein a polarization degree is 80% or more and 99.7% or less.
7 . The thermoformed article according to claim 3 , wherein a single body transmittance is 20% or more and 40% or less.
8 . A method for producing a thermoformed article comprising thermoforming the polarizing plate according to claim 1 .
9 . A thermoformed article formed by thermoforming the polarizing plate according to claim 2 .
10 . The thermoformed article according to claim 9 , having a maximum elongation coefficient of 35% or less.
11 . The thermoformed article according to claim 9 , wherein a crack rate is 0% or more and 40% or less when thermoforming is conducted using a mold which has a spherical concave having a curvature radius of 5.8 cm and a depth of 2.8 cm.
12 . The thermoformed article according to claim 9 , wherein a polarization degree is 80% or more and 99.7% or less.
13 . The thermoformed article according to claim 9 , wherein a single body transmittance is 20% or more and 40% or less.
14 . A method for producing a thermoformed article comprising thermoforming the polarizing plate according to claim 2 .
15 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the amount of a non-oriented amorphous part in the polarizing film is 56% or more and 69% or less.
16 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the amount of a non-oriented amorphous part in the polarizing film is 57% or more and 68% or less.
17 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the thickness of the film is 17 μm or less.
18 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the thickness of the film is 14 μm or less.
19 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the thickness of the film is 12 μm or less.
20 . The polarizing plate comprising a polarizing film according to claim 1 , wherein the thickness of the film is 5 μm or more.