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Printech Archives, March 1998: Need Help Reducing HAPs from Gravure Printing

Need Help Reducing HAPs from Gravure Printing

Wayne Pferdehirt (
pferdehi@epd.engr.wisc.edu)
Tue, 17 Mar 1998 06:54:42 CST


------- Forwarded Message Follows -------

I am currently working with a manufacturer of flexible packaging to
reduce or eliminate their use of HAPs-containing raw materials.
Basically, the coat, laminate, and print onto various plastic
substrates.

Our initial analysis has led us to the coating operations which apply
coating to the substrates via a gravure process. For some coatings,
the cylinder must be warmed before a run is started. The cylinder is
warmed by filling a heated pan with toluene and circulating the cold
cylinder in the warm toluene for about 45 minutes. Not surprisingly,
this is a significant source of HAPs releases.

Several opportunities pop into my mind, but I need to find
resources/contacts that can provide me with more information about
costs, impacts on quality, retrofitting, etc. Can you direct me to
resources/contacts that can help me with the following questions.

1. Where can I find good information about enclosed doctor blade
systems?

2. Are there existing technologies available for warming cylinders?

3. Do you know of other techniques used for warming cylinders?

4. How shallow can a pan be before it has detrimental effects on the
exchange of ink/coating to the cylinder?

I look forward to your response. Thanks in advance for your help

John Jaimez
Waste Reduction Institute


 

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