Date:	Thu, 27 Jan 1994 07:21:22 -1000
From:	M.N.Oakden@durham.ac.uk (Mark N Oakden)
Message-Id: <AA04609.9401271721.cpt1.dur.ac.uk@uk.ac.durham>
Organization: Division of Applied Sciences, Harvard University
Subject: Heat Welding of plastics?

Anybody out there know about heat-jointing plastic films?  I'm
thinking particularly of mylar here --- I guess it must be possible
since those toy helium filled mylar balloons appear to be heat
jointed.   Can it be done without a special rig i.e. with a low
wattage soldering iron or a soldering iron + dimmer switch?

Cheers,
Mark.
--
M.N.Oakden@durham.ac.uk | Centre for Particle Theory, | "Spring night,
19681::MNO              |       University of Durham, |        cherry-
                        |        Durham, DH1 3LH, UK. | blossom dawn."


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Date:	Mon, 31 Jan 1994 06:55:37 -1000
From:	ataylor@nb.rockwell.com (Sandy (Alexander) Taylor)
Message-Id: <1994Jan31.165537.18885@nb.rockwell.com>
Organization: Rockwell International
Subject: Re: Heat Welding of plastics?


<
<Anybody out there know about heat-jointing plastic films?  I'm
<   ...

   I have welded 3 mil plastic using a regular (cloths) iron.
use a very low heat, and use the side of the iron and roll it
quickly. If the temperature is just right, you will have a sturdy 
weld. If it is too hot, it will cut through. If it is too 
cool, the join will be very weak. You may want to run parallel
welds for added strength. Try on scraps first.


    Sandy          ataylor@nb.rockwell.com


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