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screen printing => General Screen Printing => Topic started by: garneauk on August 18, 2018, 08:58:47 PM

Title: problem overprinting red
Post by: garneauk on August 18, 2018, 08:58:47 PM
I have problems overprinting a cardinal red, they come out magenta. I have tried different cardinal from few company, all do the same thing. white is rutland sf2. dry to the touch after the flash no problem. print perfect on a light shirt. help please !!!
Title: Re: problem overprinting red
Post by: Frog on August 18, 2018, 10:15:13 PM
Got a pic?
What mesh?
Shirts 50/50 or cotton?
Is the effect immediate or delayed?
Title: Re: problem overprinting red
Post by: Dottonedan on August 18, 2018, 11:41:27 PM
Good questions Frog. 

I was thinking either too high of a mesh on top color (would be more pastelish Pink/white I'd think, or the base is not a Poly white and bleeding, causing the pink.
NOt sure till we know some answers to those questions.
Title: Re: problem overprinting red
Post by: RICK STEFANICK on August 19, 2018, 08:26:20 AM
be sure your overprinting with a opaque red. mesh should be 230.
Title: Re: problem overprinting red
Post by: lancasterprinthouse on August 19, 2018, 12:36:42 PM
Good questions Frog. 

I was thinking either too high of a mesh on top color (would be more pastelish Pink/white I'd think, or the base is not a Poly white and bleeding, causing the pink.
NOt sure till we know some answers to those questions.

I believe Street Fighter is a poly white so he should be good there


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Title: Re: problem overprinting red
Post by: Frog on August 19, 2018, 01:20:48 PM
Good questions Frog. 

I was thinking either too high of a mesh on top color (would be more pastelish Pink/white I'd think, or the base is not a Poly white and bleeding, causing the pink.
NOt sure till we know some answers to those questions.

I believe Street Fighter is a poly white so he should be good there


Sent from my iPhone using Tapatalk

SF2 is a typical Low Bleed white, not poly specific
Title: Re: problem overprinting red
Post by: lancasterprinthouse on August 19, 2018, 01:26:39 PM
Good questions Frog. 

I was thinking either too high of a mesh on top color (would be more pastelish Pink/white I'd think, or the base is not a Poly white and bleeding, causing the pink.
NOt sure till we know some answers to those questions.

I believe Street Fighter is a poly white so he should be good there


Sent from my iPhone using Tapatalk

SF2 is a typical Low Bleed white, not poly specific

Don’t mind me, just over here spreading false information. Thought it was a poly white for some reason. 


Sent from my iPhone using Tapatalk
Title: Re: problem overprinting red
Post by: Frog on August 19, 2018, 01:37:10 PM
Well, we still don't know what type of fabric (and hence dye) the OP was dealing with. Even with the improved low bleed whites that evolved, I developed gun shyness on 50/50 reds and their cousins due to the dreaded delayed-reaction pinking effect I once experienced on a big order for the March of Dimes.
Title: Re: problem overprinting red
Post by: Maxie on August 19, 2018, 03:41:13 PM
I’m not sure that any of the Rutland/Union low bleeds are for poly.     I recently looked for one and everything I looked at was for 50/50 or cotton.     For poly they recommend the Grey barrier base.
Title: Re: problem overprinting red
Post by: Frog on August 19, 2018, 04:06:58 PM
I’m not sure that any of the Rutland/Union low bleeds are for poly.     I recently looked for one and everything I looked at was for 50/50 or cotton.     For poly they recommend the Grey barrier base.
We are straying from the original thread a bit, but with the amalgamation of all of the brands now under Poly One's wing, I can't say for sure what, if any products are being dropped, but Union offered 1070 Premium White, or their 1500 Barrier Gray.
Rutland has EL9746 Super Poly White and their Barrier Gray EL0266.

Title: Re: problem overprinting red
Post by: screenxpress on August 19, 2018, 05:47:57 PM
Whenever I see "a cardinal red, they come out magenta" using White ink, I think of dye bleed.

Maybe he'll come back with more information.
Title: Re: problem overprinting red
Post by: garneauk on August 19, 2018, 07:22:57 PM
underbase is 110, red and grey are 230, 100% cotton shirt, effect is immediate
Title: Re: problem overprinting red
Post by: Squeegie on August 19, 2018, 08:26:27 PM
Ran into a similar problem here a few years ago. Custy changed the tried and true ash grey tees to navy.  The red we had used for them when under printed with white looked very light...much like you show. So, we used a grey under print instead of white and were able to achieve the color they expected.
Also, we used 230 for the base and a 230S for the top.


Best of luck.
Title: Re: problem overprinting red
Post by: Frog on August 19, 2018, 08:34:03 PM
underbase is 110, red and grey are 230, 100% cotton shirt, effect is immediate

Boils down to too much base for too translucent of a top ink layer.
110's are rarely used nowadays
Title: Re: problem overprinting red
Post by: screenxpress on August 19, 2018, 11:14:24 PM

Boils down to too much base for too translucent of a top ink layer.
110's are rarely used nowadays

They do have some uses.  I think Jason said he uses them to hold the door open for air movement in the summertime. 
Title: Re: problem overprinting red
Post by: blue moon on August 20, 2018, 02:58:40 AM
underbase is 110, red and grey are 230, 100% cotton shirt, effect is immediate

your red ink is probably both translucent and the deposit is too thin.

start with high opacity ink and then use a thicker stencil. Beware, hi opacity inks do not print well wet on wet and you should probably flash after printing it.

We always print the red right before the flash (and with thicker mesh) to keep it as bright as possible.

pierre
Title: Re: problem overprinting red
Post by: cleveprint on August 20, 2018, 08:49:39 AM
we always had this issue using wilflex standard epic colors. red and royal always presented an issue for us with the inks changing color a bit. when we started using their Rio system, the inks are a more opaque. now if someone asks for a standard red over an underbase, we use the Rio red directly out of the bucket, no mix. it covers great and has no issues going through higher meshes.
Title: Re: problem overprinting red
Post by: mk162 on August 20, 2018, 01:45:03 PM
Yup, try an HO red printed last and you should be good.  Cardinals are the worst around here.  Those and blues.  For overprinting we switched over to either Smart Series or the Comfort FF Series.
Title: Re: problem overprinting red
Post by: 3Deep on August 20, 2018, 01:47:28 PM
Not idea and production friendly, but you can flash the red and reprint, I've had to do this a time or two, can't remember what blend shirt it was that I had this problem on.