What causes this blotchiness on mousepad?

[Fraz]

http://i.imgur.com/nZjiSd2.jpg

I assume there's water in the mat because there's droplets around the outside of the mat after I press and I assume the water causes this effect you see on the left of the image. I found there was less blotchiness when I pre-pressed the mat for a minute or so but its still not gone completely on any of my prints.

Am I correct about this and is there any permanent solutions at all?

[JMugs]

What sort of press? Clam or swing?
I am looking on my phone, and if you are referring to the edge, it could be lack of even pressure.

When I fire a press up I bring it up to temperature then close it for about 30 secs, open for a few then repeat. With the product I pre press, time depends on product, but anything up to 20 secs. Hence never had a problem with moisture.

Janners

[NikGrey]

Interested in the answer to what type of press you are using !

[Fraz]

Clam. I suppose it could be a pressure issue. Is there such a thing as too much pressure?

[JMugs]

Lower your press slowly, and look to see if the plate touches the mat evenly, OR does the the plate touch the back of the pad first?

Janners.

[teknokat]

Where did you get your mouse mats from? Only reason I ask is I had a very similar issue with some mats last week which I couldn't resolve despite using different pressure and pre pressing for 1 min so i opened a different box of mats to try and the problem was gone and I've not had a problem since with this box of mats. Mine was a swing press btw.

[purpledragon]

Not enough pressure or not enough time

[viccar]

i use clam, firm pressure, 180c for 50 seconds, (ricoh, truepix and sulbijetr)

[purpledragon]

try putting some ironing board felt on the bed of your press then press items on top of that . thats tip is solid gold so sssshhhhh dont tell anyone

[viccar]

purple im sure you have shares in ironing board felt