| abstract |
A cover plate for drilling, comprising: a metal foil and a resin composition layer formed on at least one side of the metal foil, wherein the shear storage modulus of the resin composition layer satisfies the following formula (i) , the relationship shown in (ii). ‑3.0≤△G'≤‑1.0…(i)4.5×10 5 ≤G’(56)≤100×10 5 …(ii) (In the above formula, △G’=log 10 (G’(62)) -log 10 (G'(56)), G'(56), and G'(62) represent the shear storage modulus (unit: Pa) at 56°C and 62°C of the resin composition, respectively. |