Author Topic: sim process/moire question  (Read 2126 times)

Online ericheartsu

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sim process/moire question
« on: October 24, 2016, 02:31:19 PM »
we are printing a 6 color sim process print. Something we've done at least 7 or 8 times. black shirts came out perfect! As soon as we switched to a white shirt though, moire pattern is showing up in at least two of the screens.

The image is a darker photograph, so maybe the moire isn't noticeable on the black, but what could be causing it on only the white prints?
Night Owls
Waterbased screen printing and promo products.
www.nightowlsprint.com 281.741.7285


Online mk162

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Re: sim process/moire question
« Reply #1 on: October 24, 2016, 02:34:58 PM »
Did you still underbase it on the whites?  Sometimes the shirts can cause a competing moire with the dots.  The base may have prevented it on the black shirts.

Offline mimosatexas

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Re: sim process/moire question
« Reply #2 on: October 24, 2016, 02:36:31 PM »
That would be my thought. Moire from the knit.

Offline Colin

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Re: sim process/moire question
« Reply #3 on: October 24, 2016, 03:00:23 PM »
My guess is also shirt weave issues.

Try it on a different weight white shirt and see if it still shows up.  Then try with the underbase.
Been in the industry since 1996.  5+ years with QCM Inks.  Been a part of shops of all sizes and abilities both as a printer and as an Artist/separator.  I am now the Ink and Chemical Product Manager at Ryonet.

Online ericheartsu

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Re: sim process/moire question
« Reply #4 on: October 24, 2016, 03:05:37 PM »
we took the base off, only because it was a DCUB. but we can try putting it back on with white plastisol.

also going from a NL3600 black, to 3600 white!
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Online ebscreen

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Re: sim process/moire question
« Reply #5 on: October 24, 2016, 03:20:10 PM »
We had one where we were getting a pattern between two screens so we re-burned at a slightly different angle
only to then get a pattern with the weave of the shirt. Sin amor por moire.

Offline ZooCity

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Re: sim process/moire question
« Reply #6 on: October 24, 2016, 03:52:31 PM »
Another guess at fabric/weave interference.  SUCKS when this happens.  UB is the only solution I know of.   

Weird that it's the same 3600 though...

Online ericheartsu

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Re: sim process/moire question
« Reply #7 on: October 24, 2016, 03:53:01 PM »
Another guess at fabric/weave interference.  SUCKS when this happens.  UB is the only solution I know of.   

Weird that it's the same 3600 though...

this is what threw me off too. we are going to try it with the ub back on, see what happens.
Night Owls
Waterbased screen printing and promo products.
www.nightowlsprint.com 281.741.7285