| 摘要 |
PURPOSE:To obtain a film of a contant color tone free from color tone change even by the recovery and use of lags by mixing an uncolored polyester pellet, a polyester pellet containing a color index solvent blue 45 and a polyester pellet containing phthalocyanine based blue pigment to make a film. CONSTITUTION:A polyester pellet containing no coloring agent in substance, a polyester pellet containing a color index solvent blue 45 (e.g.: acetosol blue RLS of Sandoz) and a polyester pellet containing a phthalocyanine based blue pigment (e.g.: nylofil blue BLL of Sandoz) whose visible absorption spectrum is maximum in the vicinities of 609mmu and 676mmu in the polyester are mixed to form a film. Thus, a film is obtained as colored in the chromaticity within the range encircled by points 1-4 on a chromaticity diagram prescribed by JIS Z8701.1958. |
