Blanket Staining

[Slagneb]

What are some of the things that may cause blanket staining?? Even after a washup image is still on the blanket??

 

[Cornishpastythighs]

Ink, press wash, incompatible blanket/ink combination, incorrect plate/blanket pressures, inefficient automatic blanket washers, Image burned in with UV light/heat.
just a few of the many I guess

 

[cjwworld]

my guess, is the type of ink you are using. Make sure the blanket is made for the type of ink you are using

 

[Bob Peterson]

Please provide us with more information:

What type of press?

What type of ink (Heatset, UV, Oil base, Sublimation)?

What type of blanket (Conventional,Compressable)?

Auto wash or manual?

Wash up chemical being used?

This info will allow us to better identify the problem.

 

[Slagneb]

Press is Roland 900
Ink is Flint Supreme Bio
Blanket is Day 4000 Compressible
Wash is Recycled and delivered with an auto wash system
Short run printer
Unigraph etch and sub

Hope this helps??

 

[Cornishpastythighs]

We use some recycled wash combined with fresh wash to clean our rollers up but never in our Automatic Blanket washers, Press Manufacturer told us only to use fresh wash for the blankets.

 

[Bob Peterson]

I would agree with Cornish. Try using fresh wash on the blankets for a week and see if the staining is eliminated. Keep us informed.

 

[jbeniston]

What are some of the things that may cause blanket staining?? Even after a washup image is still on the blanket??

Do you mean that there is still ink on the blanket?
Some staining is inevitable and will always be vsible.
Is the solvent approved for use by Roland
How old is the press? are the blanket wash brushes worn out?
Are you replacing the used up surfactant in the recycled solvent?

 

[Alois Senefelder]

Blanket Staining

Hello,

............ do you mean after washing the blanket you see a residual stained Image of the recent production run ??????

Staining of the blanket is a most misunderstood term. What is usually inferred is that the colour left on the face of the blanket is almost impossible to remove from the surface.

Tip -- all new mounted blankets should be "Primed" first with --

1 Liquid Quickset Ink Reducer or Heatset Ink Liquid Reducer, if time permits allow 5 - 10 mins. for the reducer to penetrate into the blanket face, before washing off.

Regards, Alois