Glass roll with resin film
AssigneeNitto Denko Corporation
InventorsTakeshi Murashige, Junichi Inagaki, Kazuhito Hosokawa, Kota Nakai, Toshihiro Kanno
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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/mm2, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.
Claims19
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
- the adhesive has a thickness of 1 μm to 50 μm, and
- 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/mm2, to the resin film for 48 hours, in a state in which the glass film is fixed in 23° C. and 50% RH.
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
- the adhesive has a thickness of 1 μm to 50 μm, and
- 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 (m2/GPa/48 h) 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).
Dependencies are inferred from the claim text.