Filament coming out from screw



Hi everyone, after a lot if trys I fainlly made my Anet A8 prints, there is only one more problem.

When im printing, the filaments (the plastic) start to squirt from the upside, where the nut is, squirt slowly but after some time it begins to accumulate in the nozzle (outside it) and in some point it touch the model and all become a mess.

I can pause the printing, clean that plastic and then continue printing, but that is viable only for small models, i cant be cleaning every 15 minutes in a 10 hours printing.

I tried lowering the tempaerature (currently 190) to 180 but is wasnt hot enough to stick filament to hotbed. I tried moving the nut bot didnt work.

Have somebody had this issue?