| abstract |
To provide a fluororesin film wherein the coating film material is not limited, deterioration of the coating film and the fluororesin film body due to the ultraviolet light is suppressed for a long period of time, and the transparency of the fluororesin film body is high. n A fluororesin film 10 comprising a fluororesin film body 12 and a printing layer 14 (coating film) comprising a printing ink containing a resin, formed on one side of the fluororesin film body 12, said fluororesin film body 12 containing hydrophobized silicon oxide-coated metal oxide particles obtained by a production process comprising (a) a step of adding a silicon oxide precursor to a dispersion of metal oxide particles to obtain a dispersion of silicon oxide-coated metal oxide particles, (b) a step of adding R 1 4-n Si(OR 2 ) n or R 3 3 Si—NH—SiR 3 3 (R 1 : a C 1-9 alkyl group, R 2 , R 3 : an alkyl group, n: 1 to 3) and a silicon oxide precursor to the dispersion for primary hydrophobization treatment, (c) a step of further adding a silanol-protective agent for secondary hydrophobization treatment, and (d) a step of drying the dispersion, and a fluororesin. |