| 摘要 |
<p>A noise suppression film having reduced unevenness of electromagnetic wave noise absorbability, which comprises a thin Ni film, which is vapor-deposited on one surface of a stretched plastic film of polyethylene terephthalate, and then subject to a heat-shrinkage-causable heat treatment at a temperature in a range of 110-170°C for 10 minutes to 1 hour, (a) the light transmittance of the thin Ni film measured with laser rays having a wavelength of 660 nm being 3-50%, and (b) the surface resistance of the thin Ni film being 10-200 ©/square when measured on its square test piece TP of 10 cm x 10 cm under a load of 3.85 kg applied via a flat pressure plate, with a pair of electrodes each having a length completely covering a side of the test piece disposed on opposing side portions of the test piece.</p> |
