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General => General Discussion and ??? => Topic started by: digitee on December 05, 2016, 06:25:03 PM

Title: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: digitee on December 05, 2016, 06:25:03 PM: Does anybody know the trick on getting smooth white prints on 50/50 Navy tees.
I am printing a a 156 base ppF with a 70/90/70 high angle sharp squeegee,med pressure on my autopress then hitting again on a 110 high white ppf and I get a hairy print attached.
Zoom in and you can see the fibers of the tee in the white ink.
Thanks
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: 244 on December 05, 2016, 06:29:44 PM: What kind of press?
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: dirkdiggler on December 05, 2016, 06:36:18 PM: Low tension screens! My first guess and probably right. ;)
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: digitee on December 06, 2016, 09:03:28 AM: MHM X-Type also screens are 25 to 30 nutons
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: mk162 on December 06, 2016, 09:12:50 AM: I'd check off contact and make sure you have about the thickness of a nickle between the shirt and the screen. You can table up and press the mesh to make sure there is clearance.

I would then more to squeegee pressure. Are you clearing the screen fully? You might have to double stroke the print(i know people are cringing right now, but he can get the job out the door and then work on fine tuning everything).

If you have too much pressure you are driving the ink into the shirt and picking the fibers up after it prints.

There are tons more things, but these are usually the ones that get us.
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: Printficient on December 06, 2016, 09:22:12 AM: Call me. I PM'd you. I am very familiar with MHM's
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: jsheridan on December 06, 2016, 05:08:37 PM: Let me be the first to ask what kind of white are you using.
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: digitee on December 06, 2016, 05:43:41 PM: wilflex epic white
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: sqslabs on December 06, 2016, 05:59:46 PM: A few ideas:

- Use the lower mesh as the base, and the higher mesh as the highlight
- Double stroke the base if necessary
- Less pressure on stroke
- Roller squeegee after the base flash
- S-Mesh: 135S for bases have become our go-to here, but 150S does pretty well too
- New pallet paper / Clean pallets - This can cause a major improvement with certain fuzzy type blends
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: broadway on December 07, 2016, 11:19:02 AM: Can you tell when you the "hairs" pop up? Before flash, after flash, after it extis dryer...
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: RICK STEFANICK on December 07, 2016, 12:17:36 PM: I have found with the epic quick the second stoke or excessive pressure is usually the issue. Not that u want to but you could run a first down clear and flash. then print the quick white. Base will matt out e fibers better than white. oh, be sure your running like a 70/90/70 sharp blade
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: digitee on December 07, 2016, 09:47:35 PM: the hair appears after the first ppf
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: digitee on December 07, 2016, 09:49:04 PM: thanks i will try the clear base
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: mk162 on December 08, 2016, 08:23:56 AM: you may be overflashing as well.
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: BP on December 08, 2016, 11:35:27 AM: I found with Epic is that it has a lot of blowing agent in it. Try another LB white or poly white.
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: jsheridan on December 08, 2016, 10:06:13 PM: Quote from: digitee on December 07, 2016, 09:47:35 PM
the hair appears after the first ppf

Quick through a 150 S mesh requires very little pressure and even the slightest to much pressure starts to push the ink into the shirts. double stroking will push the first printed ink into the shirts and cause the shirt fibers to wick and stand up. It's a reaction of dry cotton fibers absorbing liquid.

Really try to get away from double stroke, a single hit of quick is all you need. If you "think" it's not white enough.. that's you because I've printed single bases for years and my whites and highlights are WHITE when they exit the dryer.
Title: Re: Hairy white prints on Navy 50/50 poly/cotton shirts large white area
Post by: tpitman on December 09, 2016, 04:26:59 PM: Quote from: mk162 on December 08, 2016, 08:23:56 AM
you may be overflashing as well.

After 14 years of printing I've recently found this out. Some jobs, no matter how I fussed with getting the tackiness out of the ink and enough ink down to matt the fibers, too much flash would raise the "hair" in many instances.