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Need advice! Thin steel cliches vs Alcohol Polymer cliches?

Posted on Tue, 23 Nov 2004 at 5:24



Need help determine if I should switch from using thin steel cliches to alcohol wash polymers. If we stick with thin steel I think of swtiching the nirtic acid for Ferric cloride and some pcb etching tanks. Any feedback on how these work?

Today we etch thin steel cliches with nitric acid.

Problems today with thin steel cliches:
* Very difficult to get the same result of etching, from day to day
* Regulations from authoritys.
* Manual etching

Advantges with steel cliches:
* Great lifespan, hard to scratch and so on..
* Can be washed in the phenumatic parts washer as it isnt affected by the solution in the washer.
* Can be stored for ever if oiled before storing.

So now you tell me the problems and advantages of alcohol wash polymers....

My machine is an TTN 4 color. I run cliches that are 100x200, 200x200, 300x200, 400x200 mm. The machine as inkcups with steel rings, will this work on alcohol polymers? The machine manufacture says yes, but would like a second opion.

So what machines do I need to make alcohol wash polymers? Can I do this manually and still get good results? Or does it need to be a automatic machine?

Also, the biggest single print run would be around 30000 parts.

I have heard that BASF polymers is the only way to go, true?

Thanks for you ideas.

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Comments

Anonymous says: We purchase our thin steel material and all supplies from Chronite, not sure what the acid is, but we do not have any problems. All of our plates are etched manually, I have never had any luck with "etching ...

We purchase our thin steel material and all supplies from Chronite, not sure what the acid is, but we do not have any problems. All of our plates are etched manually, I have never had any luck with "etching machines". I personally would not use polymer plates with steel ring's, I have had luck with ceramic ring's though. S 43 material from BASF works fine, but you must use half tone material, 300 line at 90%.

posted on: Tue, 11/23/2004 - 7:49am
Anonymous says: Cant find any S43 in BASF lineup. A WS43W exists, but that is a water wash plate and that wouldnt defently not work with steel rings. That was the machine manufacture told me. It has to be alcohol plates ...

Cant find any S43 in BASF lineup. A WS43W exists, but that is a water wash plate and that wouldnt defently not work with steel rings.

That was the machine manufacture told me. It has to be alcohol plates otherwise they will not last.

What type of etching machines have you tried?

/Anders

posted on: Tue, 11/23/2004 - 8:17am
Anonymous says: Ray Murphy, General Sales Manager with Pentex Industries in Toronto, Canada. When using either steel or polymer plates, ask the simple questions; cost time run size I have always reviewed the use of either ...

Ray Murphy, General Sales Manager with Pentex Industries in Toronto, Canada. When using either steel or polymer plates, ask the simple questions;

cost
time
run size

I have always reviewed the use of either plate on these requirements.

A steel plate is great for long runs, same processing time (a little more dangerous to make due to chemicals used), more costly.

Polymer plate, great for short (500 pieces) and long runs (80,000 pieces), easy to make and very safe, alot more cost effective.

Both can be used with the sealed ink cup system and can be stored for future production. Both can use the same exposure unit you have presently, different washout solutions. The De-natured alcohol is cheaper for polymer plates.

You can contact me at either of the numbers attached.

Ray Murphy
Pentex Industries
(416) 438-3901
ray@inkflexx.com

posted on: Tue, 11/23/2004 - 10:35am
Anonymous says: What brand of polymers do you use? Our biggest production run will not exceed 30.000-40.000 prints. How consistent are etch depths on polymers? This is a big problem today with thin steel cliches. 2 degress ...

What brand of polymers do you use?

Our biggest production run will not exceed 30.000-40.000 prints.

How consistent are etch depths on polymers? This is a big problem today
with thin steel cliches. 2 degress celsius on either way on the termometer
and the etching goes havoc with nitric.

/Anders

posted on: Tue, 11/23/2004 - 11:41am
Anonymous says: You're having problems finding info on S43 because BASF promotes the ST52 in Europe. My company is a BASF distributor in the States and sell well over 100 cases a month of the S43. You can contact me ...

You're having problems finding info on S43 because BASF promotes the ST52 in Europe. My company is a BASF distributor in the States and sell well over 100 cases a month of the S43. You can contact me if you have any questions.

posted on: Thu, 12/16/2004 - 7:21pm
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