Thin glass elongated body

Patent metadata

Field	Value
Publication number	US-9783449-B2
Application number	US-201314435341-A
Country	US
Kind code	B2
Filing date	Oct 18, 2013
Priority date	Oct 19, 2012
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

There is provided a thin glass elongated body that can be prevented from being broken when subjected to processing or treatment by a roll-to-roll process. A thin glass elongated body of the present invention includes: a main body that includes an elongated thin glass; and a handling section that includes tough films connected to both ends of the main body in a length direction of the main body.

First claim

The invention claimed is:

1. A thin glass elongated body, comprising:
a main body comprising an elongated glass; and
a handling section comprising films connected to both ends of the main body in a length direction thereof,
wherein an absolute difference between a width of the elongated glass and a width of each of the films is 20 mm or less, and
wherein a product of a Young's modulus and a thickness of each of the films is 90% or less of a product of a Young's modulus and a thickness of the elongated glass.

2. A thin glass elongated body according to claim 1 ,
wherein the main body comprises a plurality of main bodies and the handling section comprises a plurality of handling sections, and
wherein the plurality of main bodies and the plurality of handling sections are arranged alternately in the length direction.

3. A thin glass elongated body according to claim 2 , wherein the plurality of main bodies are formed at an interval of 50 cm or more.

4. A thin glass elongated body according to claim 1 , wherein the elongated glass has a thickness of from 10 um to 150 um.

5. A thin glass elongated body according to claim 1 , wherein the elongated glass has a width of 300 mm or more.

6. A thin glass elongated body according to claim 1 ,
wherein the elongated glass and the films are superimposed with each other in a connecting portion between the elongated glass and the films, and
wherein a length x of the connecting portion, at which the elongated glass and the films are superimposed with each other, and a width y of the elongated glass satisfy a relationship of 0.01y<x<y.

7. A thin glass elongated body according to claim 1 , wherein a material forming each of the films comprises a resin or a metal.

8. A thin glass elongated body according to claim 1 , wherein each of the films has a fracture toughness value of from 2 MPa·m 1/2 to 20 MPa·m 1/2 .

9. A thin glass elongated body according to claim 1 , wherein a coefficient of linear expansion of each of the films in a width direction thereof is one time to ten times as large as a coefficient of linear expansion of the elongated glass.

10. A thin glass elongated body according to claim 1 , wherein the thin glass elongated body is formed into a roll shape.

11. A thin glass elongated body according to claim 1 ,
wherein the elongated glass has a thickness of from 10 μm to 150 μm and each of the films has a thickness of 5 μm to 500 μm, and
wherein the films are composed of a resin selected from the group consisting of a polyethylene terephthalate-based resin, a polyimide-based resin, a polyamide-based resin, a polyethylene naphthalate-based resin, a polycarbonate-based resin, and a cycloolefin-based resin, or a metal selected from the group consisting of aluminum, stainless steel, copper, iron, and lead.

12. A thin glass elongated body according to claim 11 , wherein at least one of the films is composed of the metal.

13. A thin glass elongated body according to claim 1 , wherein the films have a coefficient of linear expansion in a width direction of 50 ppm/° C. or less, and the films have a coefficient of thermal shrinkage in the width direction of 10% or less when heated at 150° C. for 30 minutes.

Assignees

• Nitto Denko Corp

Inventors

• Murashige Takeshi
• Inagaki Junichi
• Ryu Seong Jin
• Takemoto Hiroyuki

Classifications

• B29K2067/003

  PET, i.e. poylethylene terephthalate · CPC title

• B65H2801/61

  Display device manufacture, e.g. liquid crystal displays · CPC title

• C03B25/06

  with horizontal displacement of the glass products · CPC title

• B29C65/5057

  positioned between the surfaces to be joined (B29C65/5035 takes precedence) · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title