Glass film-resin composite

Patent metadata

Field	Value
Publication number	US-12311645-B2
Application number	US-202318239071-A
Country	US
Kind code	B2
Filing date	Aug 28, 2023
Priority date	Oct 26, 2016
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

Provided is a glass film-resin composite which makes it possible to obtain a long-length (e.g., 500 m or more-long) glass roll. The glass film-resin composite comprises a glass film, and a resin tape laminated to at least one surface of the glass film through an adhesive, wherein the width l (mm) of the resin tape satisfies the following formula (1).
l ≡ a ⁢ E g ⁢ t g E p ⁢ t p ( 1 )
(where: a represents a reinforcement coefficient (mm*(μm) 1/2 ) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (μm) of the glass film; and tp represents the thickness (μm) of the resin tape.).

First claim

The invention claimed is:

1. A glass film-resin composite comprising:
a glass film having a first surface and a second surface opposite the first surface; and
a resin tape laminated to the first surface of the glass film through an adhesive, wherein
the second surface of the glass film is free from having the resin tape, and
the width l (mm) of the resin tape satisfies the following formula (1);

l
≡

a
⁢

E
g

⁢

t
g

E
p

⁢

t
p

(
1
)

(where: a represents a reinforcement coefficient (mm*(μm) 1/2 ) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (μm) of the glass film; and tp represents the thickness (μm) of the resin tape),
wherein
the resin tape has a width of 2.5% to less than 5% the width of the glass film, and
the thickness tg of the glass film is 200 μm or less.

2. The glass film-resin composite as recited in claim 1 , wherein the glass film is a glass ribbon.

3. The glass film-resin composite as recited in claim 2 , wherein a plurality of the resin tapes are laminated to the first surface of the glass film such that the plurality of the resin tapes are provided in the vicinity of each of width-directional opposite edges of the glass ribbon, in spaced-apart relation to each other.

4. The glass film-resin composite as recited in claim 1 , wherein the resin tape is laminated to the at least one surface of the glass film through an adhesive having no peelability.

5. The glass film-resin composite as recited in claim 1 , wherein the width l (mm) of the resin tape is 60 mm or less.

6. The glass film-resin composite as recited in claim 1 , wherein the adhesive has an elastic modulus of 1 GPa or more.

7. The glass film-resin composite as recited in claim 1 , which is used for producing a glass roll.

8. The glass film-resin composite as recited in claim 1 , wherein the resin tape is provided such that a longitudinal direction of the resin tape becomes parallel to the long side of the glass film.

9. The glass film-resin composite as recited in claim 7 , wherein the glass roll has a length of at least 500 meters.

10. A glass film-resin composite comprising:
a glass film; and
a plurality of the resin tapes are laminated to at least one surface of the glass film, wherein the width l (mm) of the resin tape satisfies the following formula (1);

l
≡

a
⁢

E
g

⁢

t
g

E
p

⁢

t
p

(
1
)

(where: a represents a reinforcement coefficient (mm*(μm) 1/2 ) which is 1.10 or more; Eg represents the Young's modulus (GPa) of the glass film; Ep represents the Young's modulus (GPa) of the resin tape; tg represents the thickness (μm) of the glass film; and tp represents the thickness (μm) of the resin tape),
each of the resin tapes has a width of 1% to less than 5% the width of the glass film,
each of the resin tapes has a width of less than 5 mm.

Assignees

• Nitto Denko Corp

Inventors

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

Classifications

• C09J201/00

  Adhesives based on unspecified macromolecular compounds · CPC title

• C03C17/32

  with synthetic or natural resins (C03C17/30 takes precedence) · CPC title

• C03B40/033

  Means for preventing adhesion between glass and glass · CPC title

• B32B2405/00

  Adhesive articles, e.g. adhesive tapes · CPC title

• B32B2250/02

  2 layers · CPC title