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screen printing => Equipment => Topic started by: Maxie on November 22, 2023, 03:17:00 AM
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What could be causing screens to rip in the middle?
Printing on MHM S Type
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Check the ink for any screws, machine parts that may have come loose and fell in. Also check the print head for missing screws etc.
Or it could be the gremlins!
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Sometimes there could be a small nick in the mesh, just waiting to pop...
Steve
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I don't know if your machine has the same floodbars but check them for nicks if so. It doesn't take much of one to rip the screen. Use some emery cloth to smooth them out.
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For us a rip in the middle usually means tension is too high. But we’re using newmans. Are these screens new?
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Need more info.
*Where* did the rip occur? On press? During cleanup?
Possible culprits (not a complete list):
Too high tension
Burr on an ink knife
Burr on a flood bar
Careless teenager in the screen room
Debris in the ink
Debris on a pallet
Debris in a shop rag
You looked at the screen wrong and hurt it's feelings
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Need more info.
*Where* did the rip occur? On press? During cleanup?
Possible culprits (not a complete list):
Too high tension
Burr on an ink knife
Burr on a flood bar
Careless teenager in the screen room
Debris in the ink
Debris on a pallet
Debris in a shop rag
You looked at the screen wrong and hurt it's feelings
"Debris in the ink"
One time we noticed metal shavings in the white ink bucket. Electricians....
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Thanks for the comments, I was over streching.
My Newton meter was one by 4 newtons, I'm using thin mesh so overstretching by 4 Newtons is quite a lot.
I've had my meter for 30 years, cost $100 to have it recalibrated by Newman, not bad.