Wednesday, March 08, 2006

Post extrusion treatment of filament...

Reviewing the on-line literature about producing monofilament it would appear that for CAPA and polymorph at least we could use a heated quenching bath that would keep the filament very near the melting point of the polymer. If we regulated the temperature of the bath with enough care we might well be able to straighten and stretch the polymer to a proper diameter in one go. That would certainly reduce the complexity of the system.

2 comments:

Forrest Higgs said...

It's funny you mention those. I was buying welding rods for my tiny welding set a few months ago and had exactly the same thought. :-)

Brett said...

Alternatively you might look into pop rivet gun tips.

Looking good, and I think your strategy of quenching immediately, then drawing down after tempering in a water bath, is a good idea, in as much as you probably don't want to run at the pressures necessary to extrude at the higher visicosity needed for one step sizing.