DSF

my 1st batch i printed out was really good
the 2nd batch looked the same until it was pressed then it went a bit streaky

what causes that?

is it because i didn't leave it in long enough
or the wrong heat

or was it the printer?
the images looked exactly the same on the paper

What are you Printing onto, what type of press also Time and Temp

temp is 200 C the same as the 1st time
and i printed onto cork coasters and fabric coasters

Press could be too hot try reducing temp to 185 - 190 c, I normally press Cork backed and Fabric Coasters at 185 c for 45 seconds and they turn out OK

do you use teflon paper?
i;ve heard that greaseproof is just as good so i'll grab some from the shop and try it with that also

My press has a teflon coated heatplate, the only time I've used a sheet of Teflon Paper is when I printed a few White Ts with Transfers for a friend, I have heard that Normal Greaseproof Paper can be used, but as I have never used it I wouldn't recomend it.

Anything that goes in my heat press has a sheet of greaseproof paper on it, saves the colours bleeding back to the platen, as happened a few times hence why I now use the paper as the teflon sheet was too thick and the colours didn't come out as vibrant.