Two pac temp and humidity
Discussion
erum, thanks for the reply but I think its safer to spray the stuff outside than in one of your 'controlled' environments.
A few calculations with parts per million and available space for redistribution would tell me that.
Out of interest what does your spray booth do with the cyanide created? Does it go through a special system of complex catalysts or do you simply vent it to the outside air
A few calculations with parts per million and available space for redistribution would tell me that.
Out of interest what does your spray booth do with the cyanide created? Does it go through a special system of complex catalysts or do you simply vent it to the outside air
An extracted booth and proper equipment (ie air-fed mask) is going to be safer than spraying in the open air, for the sprayer and anyone downwind. No parts per million calculation is going to alter that fact. And that's to say nothing of the legal risks the sprayer would be chancing. :-)
Have a look at www.hse.gov.uk/pubns/indg388.pdf for a the HSE's basic flyer info on iso's, which covers some of the health and protection aspects, and also the relevant law.
To answer your question, I don't spray iso-cured products, because I spray in the open air - our paint system is iso-free, and certified as 95% below the VOC occupational exposure limits when used as instructed. I know that at least some systems use 'active carbon' filtering, including some mobile/portable units.
CG
PS To try and be half-way helpful as regards the original question - it's going to vary from product to product - check the data sheets. Too much heat may initiate cross-linking between coats, which could result in crazing, which is one reason why painting a panel in direct sunlight can be a bad idea. High humidity can cause a moisture bloom in some systems, but usually it can just be baked out. Be guided by the info on the particular product you're considering...
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Have a look at www.hse.gov.uk/pubns/indg388.pdf for a the HSE's basic flyer info on iso's, which covers some of the health and protection aspects, and also the relevant law.
To answer your question, I don't spray iso-cured products, because I spray in the open air - our paint system is iso-free, and certified as 95% below the VOC occupational exposure limits when used as instructed. I know that at least some systems use 'active carbon' filtering, including some mobile/portable units.
CG
PS To try and be half-way helpful as regards the original question - it's going to vary from product to product - check the data sheets. Too much heat may initiate cross-linking between coats, which could result in crazing, which is one reason why painting a panel in direct sunlight can be a bad idea. High humidity can cause a moisture bloom in some systems, but usually it can just be baked out. Be guided by the info on the particular product you're considering...
[
Edited by ChipsAway Guy on Friday 16th June 11:51
Currently a modified Dupont Centari system. But because it's solvent-based, we're phasing it out in favour of a waterbased system over the next 12 months.
The law is changing, and sale or import of all solvent-borne paints will be illegal soon, although using up old stock will be ok for the actual painters for a while yet - but the bottom line is everyone will be using waterbased before too much longer...
CG
The law is changing, and sale or import of all solvent-borne paints will be illegal soon, although using up old stock will be ok for the actual painters for a while yet - but the bottom line is everyone will be using waterbased before too much longer...
CG
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