Glass with glass lamination film
A film for glass lamination includes a metal salt or a metal ion. A first absolute value in a gradient of concentration of metal ions within a depth of 6 to 45 nm from a surface of the film is greater than a second absolute value in the gradient of the concentration of the metal ions within a depth of 86 to 125 nm from the surface. A first average value of the concentration of the metal ions within the depth of 6 to 45 nm is 2.5 times or more than a second average value of the concentration of the metal ions within the depth of 86 to 125 nm.
1. A film for glass lamination comprising:
a metal salt or a metal ion,
wherein a first absolute value in a gradient of concentration of metal ions within a depth of 6 to 45 nm from a surface of the film is greater than a second absolute value in the gradient of the concentration of the metal ions within a depth of 86 to 125 nm from the surface,
wherein a first average value of the concentration of the metal ions within the depth of 6 to 45 nm is 2.5 times or more than a second average value of the concentration of the metal ions within the depth of 86 to 125 nm.
2. The film of claim 1 , wherein a third absolute value in the gradient of the concentration of the metal ions within a depth of 46 to 85 nm from the surface of the film is greater than the second absolute value.
3. The film of claim 1 , wherein a third average value of the concentration of the metal ions within a depth of 46 to 85 nm from the surface of the film is greater than the second average value.
4. The film of claim 1 , wherein a yellow index variation value of the film is 2.5 or less during, before, and after being kept in an isothermal-iso humidity chamber of 65° C. and 95% rh for two weeks.
5. A film for glass lamination comprising:
a polyvinyl acetal resin, a plasticizer, and a metal salt or a metal ion,
wherein a first average value of concentration of metal ions within a depth of 6 to 45 nm from a surface of the film is 2.5 times or more than a second average value of the concentration of the metal ions within a depth of 86 to 125 nm from the surface, and
the film satisfy Equation 1:
M
2
-
M
1
D
2
-
D
1
>
M
4
-
M
3
D
4
-
D
3
,
where M1 is an amount of metal ions at a first depth (D1) from the surface, M2 is an amount of metal ions at a second depth (D2), M3 is an amount of metal ions at a third depth (D3), and M4 is an amount of metal ions at a fourth depth (D4), and the D1 and D2 are respectively 60 nm or less, and the D3 and D4 are respectively 80 nm or more.
6. The film of claim 5 , wherein the D1 is 0.1 nm to 15 nm, the D2 is 40 nm to 55 nm, the D3 is 80 nm to 95 nm, and the D4 is 135 nm to 150 nm.
7. The film of claim 6 , wherein a difference between the D2 and the D1 corresponds to a difference between the D4 and the D3.
8. The film of claim 5 , wherein the D1 is 5 nm, the D2 is 55 nm, the D3 is 90 nm, and the D4 is 140 nm.
9. The film of claim 5 , wherein the M1 is three times or more of the M3.
10. The film of claim 6 , wherein the M1 is three times or more of the M3.
11. The film of claim 7 , wherein the M1 is three times or more of the M3.
12. The film of claim 8 , wherein the M1 is three times or more of the M3.
13. A laminated glass comprising:
a first glass substrate;
a second glass substrate disposed opposite to the first glass substrate; and
a glass lamination film interposed between, and bonding, the first glass substrate and the second glass substrate,
wherein the glass lamination film comprises a polyvinyl acetal resin, a plasticizer, and a metal salt or a metal ion,
wherein a first average value of concentration of metal ions within a depth of 6 to 45 nm from a surface of the glass lamination film is 2.5 times or more than a second average value of the concentration of the metal ions within a depth of 86 to 125 nm from the surface, and
the glass lamination film satisfies Equation 1:
M
2
-
M
1
D
2
-
D
1
>
M
4
-
M
3
D
4
-
D
3
,
where M1 is an amount of metal ions at a first depth (D1) from the surface, M2 is an amount of metal ions at a second depth (D2), M3 is an amount of metal ions at a third depth (D3), and M4 is an amount of metal ions at a fourth depth (D4), and the D1 and D2 are respectively 60 nm or less, and the D3 and D4 are respectively 80 nm or more.