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Discussion Starter · #1 ·
Hi all,

I have a problem here.
The ink on my black tshirt just gone with a light scratch after a wash.

Everything was perfect until I wash it. It printed nicely, tried to scratch it after curing it....nothing wrong.

Put into washing machine, come out with huge loss of detail and I can easily rub the ink of the tshirt. Even if I wash it inside out.

Anyone knows what have I done wrong?

Pretretment dry time: 55s @ 170C
Curing time: 120s @ 170C
Pretreament method: using brush, pretreament dilluted very very lightly (with less than 10% water).

Many many thanks in advance.
 

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Discussion Starter · #4 ·
Thanks for the reply, Harry and Sean.

I just dilluted the pre treatment to 50-50.
A bit better now but I still be able to scratch it off.
Put few drop of detergent water to certain area, scratch....ink is gone.

I'm currently purely rely on brushing instead of wagner spray when applying the pre treatment (easier since I have a very limited space).
Do you guys think this is also one of the issue?

I'm thinking to double pass the white or using higher the white ink resolution to 1440x1440 (i'm using 1440x720).
I don't think this is the issue since print result before washing is always good?

thanks again
 

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Discussion Starter · #7 ·
As i can remember...I've been brushing for almost a year. I thought brushing is one of the best method?
I will try the spraying again with diluted pretreatment (50/50).

I washed the tshirt using cold water.
 

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Discussion Starter · #11 ·
Hi again all,

I tried again with the wagner spray.
I still got the washability problem.
Simply put some detergent water, lightly rub the print and the problem come out.
It's not really peeling but more like the white ink doesn't really sit on the pretreatment.
Something like not properly cured.

Could it be white ink problem? Such as expired ink?

Really desperate here.
 

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Discussion Starter · #13 ·
Thanks for the info, Chris.

I cure the white 120 seconds at 347F (175C).
I just tried other brand but still the same.
I dilluted the pretreatment with distilled water.

The last image was 100% pretreatment and was not poor coverage of pretreatment, it was printed ok...
I gently rub the white print using detergent water to simulate gentle wash and became like that.

The only thing that I haven't really check is the press temp.
 
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