Wow, sounds really good. Never heard of it before, but googling it makes it sound like it may be just the ticket for me: durable (at least more durable than a space blanket) and you can get it in larger sizes than a blanket. But there are two things about it and I'm wondering if you can help...
First, how much of the infrared radiation that hits it does Visaqueen plastic reflect? Space blankets claim they reflect 90 to 95 percent. I'd like to get close to that, but no one's saying what the number is for Visqueen, at least not that I can find.
Second, I'd like to buy Visqueen plastic in pieces (say a case of 100 pieces) at least as large as a space blanket, maybe a little bit larger, but smaller than a circus tent. Know anyplace that sells that? Holyshmoly! All I'm finding are websites like this -> https://www.discountvisqueen.com/catalog/greenhouse-plastic-sheeting-6-mil-uva-anti-drip-40-x-100-349, a leeeeetle bit larger than I need.
Thanks.
As far as size, all I have ever seen it come in is large roles. I have seen some gaylord bags that are made of a similar material with a mylar lining. Gaylord bags are about 4'x4'x4'.
I would not be surprised if a regular old black trash bag would not work. As long as you let it become the surrounding temp and then get under it your heat signature would go away.