Blatter and Platini were both banned from the sport last month for ethics violations, leaving the global game leaderless as it seeks to dig itself out from beneath a slew of corruption cases. Both have denied wrongdoing.
The pair escaped potential lifetime bans demanded by the committee's investigatory arm when the panel's adjudicatory chamber found no evidence of bribery linked to a $US2 million payment FIFA made to Platini in 2011, with Blatter's approval.
"We have announced we plan to appeal the eight-year bans against Platini and Blatter," investigatory panel spokesman Andreas Bantel told reporters in Zurich, where FIFA has its headquarters.
While Blatter and Platini have said the panel was seeking a lifetime ban from the sport, Bantel said he declined to comment on the content of its appeal.
Blatter has said he feels "abandoned" by the sport's governing body and will now focus on clearing his name through his own appeal.
Platini, who was the strong favourite to succeed Blatter until becoming mired in allegations that led to his ban, has also said he will appeal.
The crisis gripping the soccer world began with arrests of a group of FIFA officials at a luxury Zurich hotel in May.
Since then Switzerland's Federal Office of Justice has frozen around $US80 million in assets in 13 bank accounts and the United States has charged 41 people and entities in a probe of corruption that spans soccer bodies around the globe.