The so called "F6 Floppy" or "F6 Driver Diskette" is legacy terminology from the Windows XP days. At that time if you needed to install a driver of some kind, like a SATA driver, you had to use a floppy disk drive, and press the F6 key to initiate the process.
You can still load a SATA driver when installing Windows 7, but you sure don't need a floppy disk to do so, and it might not even work if you had a floppy drive and disk. Not many current boards have a floppy drive connection. Why they still use that terminology, I do not know.
The f6flpy-x64.zip file will unzip into six files that are simply copied to a USB flash drive, and are the basic Intel SATA AHCI or RAID driver. That will load during the Windows installation if you click on the Load Driver button when that option is available. The "x64" version is for 64bit Windows, and the "x86" version is for 32bit Windows.
Window 7 actually has a built in copy of these Intel drivers, but it is an older version, which is why some users choose to load a newer version when they install Windows.