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Bleeding Base white on sweats

1909 Views 4 Replies 4 Participants Last post by  Oli6220, 
D
So we currently have a breeze and printing on tees (any brand) we have no issues, however there is one garments 90% of our customers want, a really good quality 80/20 sweat, fabric is really tight knit and looking at it it would print well.

However as soon as the white base hits the garment i get spread within 3-4 seconds. I have tried more spray - less spray more ink - less ink etc - but no luck.

Doing the proper ratio of 3/1 on fixation and as above printing on tees no problem at all!. I spoke to kornit in uk and they advised some garments have softners and a tip is to put it in the dryer first just to "bake" off the softner and could help, any experience of hearing this? or a solution to my problem? as i said 90% of our customers want this sweat so i have to get it working some how!

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I experienced rarely this kind of white bleeding on 80/20 sweat shirts too. It comes out when:

- Pretreatment was way too much and some kind of puddles appeared on the garment.
Before the printing, spray the garment and wipe it with a ruler. Wait for half minute to give some time to the garment to swallow the pretreatment.
You can also try "production" mode instead of "high production".

Other unlikely issues:

- Pretreatment is waste. If wihte-black or yellow-red borders bleeding on your shirts too.
Try out 2:1 ratio and/or try to get pretreatment with different batch number.

- Your print height is too big and nozzles have to shoot from an inappropriate distance. Or too low, and the head is scouring your prints.
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So i think its been fixed (when i print more next week will try)

It was a combo of putting the sweats through the dryer to bake of the softness as kornit uk recommended - and then the spray and wiping excess with the ruler and waiting then printing - everything was printing fine after.
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When we print on sweats with problems like that, my experience is also to wait 60 seconds after fixation, and then print. it usually helps wit a lot of problems. - if its a one off, from a customer shirt we dont know, we usually always do that. -
Maybe try asking in the Kornit DTG forum on facebook.
https://www.facebook.com/groups/204944886528230/
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hello,
You should put Delay between Spray and White (try 30sec or 1min)
The fabric doesn't absorb the spray and that's why you have this problem.
You can also use a manual Wiper to help spray to penetrate fabric.

For me, it was working good on Storm Hexa
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