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Thread: heating PVC and fumes and health
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14th May 2014, 07:29 PM #1newbie that's keen
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heating PVC and fumes and health
hello all,
after seeing a number of applications for a heat gun I bought one today and used it on PVC to get it into my blast gates (I don't know if it is just me, but JC they are difficult). I only did one as there was a stench/smell/aroma, etc emitted from the heating process and I was a bit concerned about inhaling this. It would sort of defeat the purpose if I got some horrible disease from the process of installing my dust extractor
Any, I did the usual google search but am not at all satisfied with what I found, although I would not put PVC in a fire !!!!
How nasty are the fumes from 'just' heating PVC? I am guessing I am not the first to have this question but (crawl, crawl) I have found this forum (especially you know who ) to be better and more accurately informed than anywhere else.
thanks
Mick
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14th May 2014 07:29 PM # ADSGoogle Adsense Advertisement
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14th May 2014, 09:18 PM #2.
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If what you are smelling is an acrid acidic smell then that is HCl which is indeed nasty especially if you breathe it
If you are smelling a sort of plasticky smell that that is .
BUT
if you are heating the PVC to the point of decomposition (where it starts to blister and turn a yellow - brown -black) then you are heating it too much, it should not need to be heated to this temp to work it.
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15th May 2014, 07:32 AM #3newbie that's keen
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BobL,
I think I missed something in the above. When heating it did not blister or change colour. I probably heated it for 2 minutes, constantly moving where I applied the heat. I do not remember the smell being acidic. Are you saying that would be of no/minor health concern?
thanks
Mick
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15th May 2014, 10:05 AM #4.
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15th May 2014, 03:35 PM #5newbie that's keen
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1st June 2014, 02:43 PM #6
Um yeh...not realy good to breath too much of that stuff.....although it may not have discoloured, you may still be getting it too hot.
When I do this stuff I do it with good ventilation and keep the air stream from the heat gun blowing away from me where possible.
getting big pieces of plastic tube evenly hot takes time a patience.
A very real alternative is hot water......if I am only softening an end or a short piece I will do it with boiling water in a bucket.....remember the bucket needs to be able to cop the heat.
cheersAny thing with sharp teeth eats meat.
Most powertools have sharp teeth.
People are made of meat.
Abrasives can be just as dangerous as a blade.....and 10 times more painfull.
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3rd June 2014, 08:30 PM #7newbie that's keen
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3rd June 2014, 09:45 PM #8
for fitting ends to other fittings hot water IS the way to go.
you do not have the problem of getting the whole diemeter evenly hot or getting more of the tube hot than necessary.
decide how much of the tube you want soft.....fill whatever container you have up to that level with boiling water..and you are away...I supose you could do it in a saucepan on the stove...but I have never tried that.
cheersAny thing with sharp teeth eats meat.
Most powertools have sharp teeth.
People are made of meat.
Abrasives can be just as dangerous as a blade.....and 10 times more painfull.
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3rd June 2014, 10:15 PM #9Senior Member
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Spa baths are in many many houses around the country and the world. PVC pipe is behind every one of them and every pipe is heated and formed into shape. Using the same principle as a heat gun. The pipe is passed through a coiled electric element and turned until flexible. Great job in winter and you can toast your sandwiches too.
open your shed doors it will be just like a big warehouse.
For me i wouldn't bother boiling water to melt the pipe. Just use the heat gun but keeping the distance out until you get more comfortable with how far/how long.
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4th June 2014, 04:58 PM #10
Ive bent pipe and conduit with burners, heat guns and kitchen stoves......but if you want to heat just an end.....a pot of boiling water cant be beat.
cheersAny thing with sharp teeth eats meat.
Most powertools have sharp teeth.
People are made of meat.
Abrasives can be just as dangerous as a blade.....and 10 times more painfull.
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