Sheet for illuminated signboard and illuminated signboard employing the same

摘要

A sheet for an illuminated signboard is described which has as a base a composite sheet which is a plain weave fabric (I) having laminated on one or both sides thereof a microporous film (II) which is a stretched thermoplastic resin film containing fine white inorganic particles, where the sheet for an illuminated signboard satisfies the following requirements (1) to (4): (1) it has an opacity of from 80 to 100%; (2) it has a whiteness of from 85 to 100%; (3) it has a total light beam average reflectance of from 12 to 40%; and (4) it has a total light beam average transmittance of from 70 to 95%.