# US 11,897,233 B2 · Method for manufacturing glass resin laminated body

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- Number: US 11,897,233 B2
- Document ID: US11897233B2
- Status: Granted
- Kind: B2
- Application number: 17/598,357
- Filed: 2020-03-11
- Published: 2022-05-26
- Granted: 2024-02-13
- Earliest claimed: 2019-03-29
- Assignees: Nitto Denko Corporation
- Applicants: Nitto Denko Corporation
- Inventors: Keisuke Sato; Takeshi Murashige; Junichi Inagaki; Atsushi Kishi
- Web page: https://patentgrep.com/patent/US11897233B2

## CPC

- B32B 17/10862: {using pressing-rolls}
- B32B 17/10: of synthetic resin
- B32B 17/10018: {comprising only one glass sheet}
- B32B 37/0007: {involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality}
- B32B 37/0053: {Constructional details of laminating machines comprising rollers; Constructional features of the rollers}
- B32B 37/10: characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B 37/12: characterised by using adhesives
- B32B 37/26: with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
- B32B 2037/268: {Release layers}
- B32B 2250/05: 5 or more layers
- B32B 2307/42: Polarizing, birefringent, filtering
- B32B 2457/20: Displays, e.g. liquid crystal displays, plasma displays
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

A method of manufacturing a glass resin laminated body includes a step of sticking a glass film on a resin film via an adhesive layer while holding the glass film and the resin film between a first roller that presses against the resin film and a second roller that is disposed opposite to the first roller and that presses against the glass film. A ratio of an elastic modulus P1 of a surface layer of the first roller to an elastic modulus P2 of the resin film P1/P2 satisfies a relation of 3×10−3≤P1/P2≤1.0.

## Claims

### Claim 1

A method of manufacturing a glass resin laminated body comprising: a step of sticking a glass film on a resin film via an adhesive layer while holding the glass film and resin film between a first roller that presses against the resin film and a second roller that is disposed opposite to the first roller and that presses against the glass film, wherein a thickness of the adhesive layer is less than or equal to 5 μm, a ratio of an elastic modulus P1 of a surface layer of the first roller to an elastic modulus P2 of the resin film P1/P2 satisfies a relation of 3×10−3≤P1/P2≤1.0, the surface layer of the first roller is formed of a material having an elastic modulus that is lower than the elastic modulus of iron, the surface layer of the first roller is a portion of the first roller 1 mm inward from a surface of the first roller towards a center; and the surface layer of the first roller is formed of a resin from a group consisting of polyethylene terephthalate, polyethylene, or polypropylene.

### Claim 2 (depends on 1)

The method of manufacturing a glass resin laminating body according to claim 1, wherein
the resin film includes a polarizing plate disposed on an opposite side of the adhesive layer with respect to the glass film.

### Claim 3 (depends on 2)

The method of manufacturing a glass resin laminating body according to claim 2, wherein
the polarizing plate includes a polarizer and a protection film.