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  1. #1
    Premium Member
    Pantrybarn's Avatar


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    Default Need help with wet spots/loss of detail

    I'm printing a logo onto some coffee bags, not sure what they're made of, but I'm having a problem with some wet spots on the text. The pictures are a little blurry, but you can see the spots below the C and O. I can't figure out what the problem is... Ink too runny? Off contact? All help is greatly appreciated.



  2. #2
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    ialieneye's Avatar

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    you have a board inside the bag between the fabric layers? and fabric should be on contact. After that I'd say yes to runny. Fabric will spread water quicker then paper

  3. #3
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    Forgot to mention that these are paper bags. These are the kind of bags that the beans come in when you buy them at the store. Not made of plastic though, its a smooth relatively thin paper. Not thin enough to bleed through though.

  4. #4
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    How much gutter do you have? What kind of angles are you using for both the print and flood strokes? And what emulsion are you using?
    Those are all factors that can affect bleeding like this during printing (in my experience).
    justinsantora.com
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    "put the immersion on your mensch with a scrub-coaster. then print with a 70 durometer skyguy"
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  5. #5
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    you're not keeping your pressure down and ink is getting between the stencil and the bag.
    are you pulling REAL FAST? stop it. you're doing it wrong.
    "I guarantee, the image will not be fade off and you will be pleasure it too. " - a bootlegger
    We need to print a tshirt "Avoid sucker effect!"-Fabio
    "fudge isn't sharp"-phoondaddy

  6. #6
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    Using probably a 45 degree angle for printing and less for the flood. I'm not sure what a gutter is... I've been pretty much learning through trial and error. I'm using DXP emulsion, and I am pulling pretty fast. Slower with more even pressure?

  7. #7
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    yes, not a lot of pressure, just even to the end of the stroke, and go with less angle. 75 degrees-ish.
    sometimes you need a piece of chipboard inside the bag, too
    "I guarantee, the image will not be fade off and you will be pleasure it too. " - a bootlegger
    We need to print a tshirt "Avoid sucker effect!"-Fabio
    "fudge isn't sharp"-phoondaddy

  8. #8
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    Listen to Steve.

    Gutter refers to the space between the frame of the screen and the stencil. It helps to have some space for the bead of ink and squeegee.
    justinsantora.com
    a letter of resignation
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    "put the immersion on your mensch with a scrub-coaster. then print with a 70 durometer skyguy"
    -Steve W

  9. #9
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    in reference to Steves advice, we're still talking about screenprinting here right?

  10. #10
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    is there a seam/gusset under that spot?

    that might fuck your stroke up in one spot like that. maybe it's pre touching if it's not sucked down, contacts the screen there, starts to bleed a bit, every print it creeps a bit more, and then gets bad, then you fuck the job up, the customer rejects it, you don't get paid, they reposess your squeegee, and you end up trimmin bud for 10 Percent Tony, the cops raid the house, you get busted, you go to jail, they give you a job making license plates 'cause you know how to screenprint, and you finally learn how to print over humps and bumps.
    Andymac

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    Todo es empezar.

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