40 AWG wire Stripping and Manipulation

Since I have some time on my hands these days, I found the following. Polyimide is used on fiber optic filament as well as wire and the sizes are quite small. Below are some links to ways to strip the coating off the fiber. Some are are fiber optic filament but should work for copper wire. I have also shown the old formula using NMP. I believe if time is not essential, you can place a sample in the NMP, let sit, and when you remove from the NMP pull the wet end of the sample through a gauze or cheese cloth pad. If not adequately removed, soak some more and repeat process. Once enough is removed, dip in deionized water to remove any NMP and dry.

"NMP IS A VERY STRONG SOLVENT SO USE SAFE LAB PRACTICES TO AVOID INJURY!!!"

richard


www.fiberlogix.com/Polyimide%20Fiber%20stripper.html
www.dynaloy.com/Products/other_microelectronics.html
mtcusa.sslcert19.com/catalog/index.asp?pgName=42
www.fujifilm-ffem.com/downloads/QZ3322_US09.pdf


Wet Strip Process:
The following is a typical procedure for removing
soft baked, photocross-linked polyimide.
1. NMP at 85°C for 5 minutes
2. QZ3322 polyimide stripper at 70°C for 5 minutes
3. NMP at room temperature for 5 minutes
4. DI water rinse, dry completely


(Note: NMP is N-Methylpyrrolidone solvent.

Hello Mike,

A razor blade may indeed be the only effective means of mechanically stripping insulation from 40 AWG wire. There are of course thermal means of doing this but you seem not interested in these.

Regards
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
519 641-3212

There is or used to be a company called the Eraser Company that made hand held devices that would strip insulation off magnet wire including very small sizes. At some point you may need to chemically strip it.

There is a company that manufactures a laser wire stripper - Spectrum Technologies - website located at www.spectrumtech.com

Try calling them for your exact needs (and if you have $30,000+ to spend).


Erik Macs
VP North American Machinery Sales
Fine International Corporation
148 Oak Street
Natick, MA 01760 USA
508-315-8200 fax: 615-658-1988
This email address is being protected from spambots. You need JavaScript enabled to view it.

The Eraser company can be found at www.eraser.com/catpdf.cgi/Magnet.pdf?mode=download&catpdf_id=11

From what I see I would say that for the 30 big ones Eric is talking about you could buy 8-10 and some go to 48 awg.

rb

hanks Vettecoupe and others. We currently use the eraser cone strippers. However, at a certain point in the process we are unable to use these because 1) the debris they create is too much and 2) they remove too much of the wire core creating a very thin flat and fragile end.
One other area I have been looking into is laser stripping these wires. It seems there are CO2, excimer and yag available. Any thoughts on what wavelength, power, beam size etc would work for the 36, 38 and 40 AWG polyimide coated wire? I would like to keep the equipment profile as small as possible.
Thanks again.

MC