Discharge seeping through tape

[brandon]

And tape is expensive. Like replacing shirts and setting up a job twice

[presspressmerch]

Perhaps a bandaid but also a safeguard for us, in addition to post exposing, is Mod Podge on the bottom of the screen.


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[Maff]

We print discharge and wb all day every day and no tape on the shirt side of the screen. That is a recipe for disaster. The screen needs to breath or pay the consequences. If you do not have a reg system and are using reg marks to film take the extra step and block out the reg marks with emulsion. Then expose again. You can still see the reg marks through the emulsion and most importantly you now have no tape on the back side of your screen. No tape is your friend.

This is what I've been trying to do. There are so many variables mentioned already, buy we've struggled with the tape line breaking down on runs over 100pieces and I'm trying to keep tape off the shirt side of the screen if possibe and only taping the squeegee side. We have an Alan802 style pre reg system and so we block out the reg marks with CCI Aqua Block, then tape over that on the squeegee side.

We are on WR-14 diazo emulsion right now and I've also been overexposing our screens to a solid 10 on the 21 step calculator. Sometime i feel LED exposure units need more juice, but that's a whole other conversation......
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Edit - sorry that may not have made sense above, we use aqua block all over the shirt side of the screen before it goes up on press, just as an extra layer of protection.  It covers all the tape areas including the reg marks and we also put tape on the squeegee side

[RICK STEFANICK]

We print discharge and wb all day every day and no tape on the shirt side of the screen. That is a recipe for disaster. The screen needs to breath or pay the consequences. If you do not have a reg system and are using reg marks to film take the extra step and block out the reg marks with emulsion. Then expose again. You can still see the reg marks through the emulsion and most importantly you now have no tape on the back side of your screen. No tape is your friend.

That pretty much sums it up. Assuming you get your exposure times nailed down as mentioned. Hardner may help some but will not eliminate the nightmare as long as you continue to tape the shirt side of the screen.  Using Natural rubber tape will not help in anyway either  We use tape that so when pulling it for reclaim it doesnt leave much residue .

[Cole]

We print discharge and wb all day every day and no tape on the shirt side of the screen. That is a recipe for disaster. The screen needs to breath or pay the consequences. If you do not have a reg system and are using reg marks to film take the extra step and block out the reg marks with emulsion. Then expose again. You can still see the reg marks through the emulsion and most importantly you now have no tape on the back side of your screen. No tape is your friend.

Thanks for the info Brandon! Do you still tape the inside of your screen to stop the edges of the squeegee from breaking down the emulsion? Or is that something that should be solved with pressure adjustment?

[brandon]

Hey, yup we tape the inside of the screen. You can do the permanent block out inside your screens but we prefer tape for various reasons.

[brandon]

And yes you can put tape where the squeegee is. Still round off the edges of the blade but yes you can do this as an insurance method.

[Cole]

Hey, yup we tape the inside of the screen. You can do the permanent block out inside your screens but we prefer tape for various reasons.

When you tape the inside, is there a specific tape that you use as far as adhesive goes? Rubber vs Acrylic.

[RICK STEFANICK]

Hey, yup we tape the inside of the screen. You can do the permanent block out inside your screens but we prefer tape for various reasons.

When you tape the inside, is there a specific tape that you use as far as adhesive goes? Rubber vs Acrylic.

Always natural rubber back tape
https://www.uline.com/BL_3073/Natural-Rubber-Adhesive-Tape-Polypropylene

[TCT]

For reg marks or small breakdown, use UPS thermal shipping labels(the ones they give you for free) those things are indestructible!