Glass roll with resin film

Patent metadata

Field	Value
Publication number	US-11241863-B2
Application number	US-201716345466-A
Country	US
Kind code	B2
Filing date	Oct 24, 2017
Priority date	Oct 26, 2016
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

Provided is a glass film-resin composite body which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass roll with resin film comprises a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 μm or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm 2 , to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.

First claim

The invention claimed is:

1. A glass roll with resin film comprising a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a creep amount a of the adhesive is 50 μm or less, as measured after applying a tensile shear load per unit area of the adhesive of 5 g/mm 2 , to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.

2. The glass roll with resin film as recited in claim 1 , wherein a slip constant S of the glass roll with resin film is 2×10 −16 or less, wherein the slip constant S is obtained from the following formula: S≡ασ, where
α represents a slipperiness (m 2 /GPa/48h) of the adhesive calculated by the following formula: α=a/F (where: F represents the tensile shear load per unit area of the adhesive (GPa/m) applied to the resin film; and a represents the creep amount (m) of the adhesive), and
σ represents a bending stress (GPa) of the glass film calculated by the following formula:

σ
=

E
g

⁢

t
g

2
⁢
ρ

(where: Eg represents the Young's modulus (GPa) of the glass film; tg represents the thickness (μm) of the glass film; and ρ represents a curvature radius (mm) centered at a thickness-directional center of the glass roll).

3. The glass roll with resin film as recited in claim 1 , wherein the bending stress σ of the glass film is 20 GPa or more.

4. The glass roll with resin film as recited in claim 1 , wherein the resin film has a width 1 of 20 mm or more.

5. The glass roll with resin film as recited in claim 1 , wherein the thickness tg of the glass film is 20 to 200 μm.

6. The glass roll with resin film as recited in claim 1 , wherein a product of the Young's modulus Ep (GPa) and the thickness tp (μm) of the resin film is 100×10 3 pa·m or more.

7. The glass roll with resin film as recited in claim 1 , wherein the resin film is formed in a tape shape and provided by a number of at least two, wherein the at least two resin films are disposed parallel to the glass film.

8. The glass roll with resin film as recited in claim 7 , wherein at least two of the resin tapes are laminated such that the resin tapes are provided in the vicinity of each of width-directional opposite edges of the glass film, in spaced-apart relation to each other.

9. The glass roll with resin film as recited in claim 1 , wherein the resin film is disposed on the glass film in at least one direction to form a laminated film, wherein the resin film is disposed on an inner surface of the glass film when the laminated film is wound into a roll.

10. The glass roll with resin film as recited in claim 1 which is used for producing a long-length glass roll having a length of 100 m or more.

11. A glass roll with resin film comprising a glass film, and a resin film laminated to at least one surface of the glass film through an adhesive, wherein a slip constant S of the glass roll with resin film is 2×10 −16 or less, wherein the slip constant S is obtained from the following formula: S≡ασ, where
α represents a slipperiness (m 2 /GPa/48h) of the adhesive calculated by the following formula: α=a/F (where: F represents a tensile shear load per unit area of the adhesive (GPa/m) applied to the resin film, in a state in which the glass film is fixed in 23° C. and 50% RH; and a represents a creep amount (m) of the adhesive, as measured after applying the tensile shear load for 48 hours), and
σ represents a bending stress (GPa) of the glass film calculated by the following formula:

σ
=

E
g

⁢

t
g

2
⁢
ρ

(where: Eg represents the Young's modulus (GPa) of the glass film; tg represents the thickness (μm) of the glass film; and ρ represents a curvature radius (mm) centered at a thickness-directional center of the glass roll).

Assignees

• Nitto Denko Corp

Inventors

• Murashige Takeshi
• Inagaki Junichi
• Hosokawa Kazuhito
• Nakai Kota
• Kanno toshihiro

Classifications

• B32B2262/0261

  Polyamide fibres · CPC title

• B32B29/00

  Layered products comprising {a layer of} paper or cardboard · CPC title

• B32B27/365

  comprising polycarbonates · CPC title

• B32B27/308

  comprising acrylic (co)polymers · CPC title

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title