pad print technical, pad print process

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Pad Printer Printing Test Trouble-shooting 1-2

1 Graphic fuzzy, poor edge definition

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Possible causes	Trouble shooting
Rubber pad too soft	Replace more harder rubber pad.
The shapeof pad is unsuited	Replace Matched rubber pad
Depth of Forme too deep	Remake pad plate with shallow depth
Incorrect Film screening	Output film with another screening parameter
Ink film too thick.	Adding some thiner to ink
Drying speed of ink too slow	Adding fast-drying thiner.
Printing stock is polluted.	Clean the surface..
Corase ourside of products.	Replace harder rubber pad
Rubber pad slide	Replace fixture and aviod pad sliding
Fixture stabilty not well	Remake fixture, reduce printing speed.

2 Poor ink Adhesion

Possible causes	Trouble shooting
Silicon oil remains of rubber pad	Clean the rubber pad with Solvent
Pad forme Depth too deep	Remake pad forme
Ink is not matched	Replace another type ink
Use bi-Component ink	Replace Bi-component ink
Incorrect Hardner percent	Please Precision addng hardner
Dirty surface of product	Clean the surface with Solvent
Need surface Treatment	Take flame treatment or Chemical treatment
Processing time is unsuited	Printing after treating soon
Insufficiency Post-curing	With IR dying or UV curing.

Pad samples show

Pad Printer Printing Test Trouble-shooting 3-4

3. Pinhole

Possible causes	Trouble shooting
Impairment surface of rubber pad	Replace rubber pad
Too Flat of rubber pad	Install more sharper rubber pad
Rubber pad too soft	Replace Harder rubber pad
Defect of pad forme	Remake pad plate
Ink too dense	Adding much more thinner.
Product surface too coarse	Choose more harder rubber pad
Dust on product	Clean the surface of object
Silicon Oil enter into ink	Replace new ink

4 Colour cross when miti-printing
Is a high-speed multi-color pad printing after printing the ink will stick before starting a phenomenon, this situation occurred in the substrate surface difficult to ink and solvent in case of infiltration of a large area printing. When the ink drying fast enough, and the shuttle table and the wheel table between the two stations to match the speed of change often occurs, usually rely on two sticky ink imprint of a pattern to solve this problem

Possible causes	Trouble shooting
Occur Pore and Ageing of rubber pad	Replace new rubber pad
The depth of pad forme too deep	Remake pad forme
Halftone percent and screen density incorrect	Renew output film with new halftome percent and screen density.
Excessive thinner	Adding ink
Drying speed too slow	Adding fast-drying thinner. Drying ink with Blowing-air.
Product Too smooth	Drying with cool wind and hot air between two times printing.
Dust on surface of product.	Clean surface with cloth

Two colours sealed cup pad printer with conveyer printing test