Patent ID: 11926140
Assignee: NITTO DENKO CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 15:
16. 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).