Re: Chill roll cleaning systems

Hi,

being a bit on the pedantic side here, but a build up of momomer would be propene (gas) and omega-aminocarboxylic acid or diammonium salt of a dicarboxylic acid (solid), maybe acid halides or so (liquid). Is the roll externally or internally cooled with water? External cooling would dissolve your polyamide "monomers" and get rid of them. If it is internally cooled and there's no contact with the residues, you are probably looking for a good brush.

Sorry.. this all sounds like i am trying to take the piss. But all i want to say is that you shouldn't be too sure about the identity of the substances on the surface of the roll.

hope i didn't make yer problem worse

dave

I've seen some facilities use a soft brass wool to clean the chill rolls. Would something like that help out? The wool must be a good deal softer than the chill roll.

Drago,

I've heard the low mole weight stuff called "polymer grease". Personally I call it "half-baked plastic". Either way, the composition is extremely variable. Sometimes it's soluble in ordinary solvents, sometimes not.

Walter.