I think IX is polyethylene. If you google 'polyethylene sheet' you find that low density polyethylene is described as "closed cell, compressible polyehtylene."
IX looks surprizingly like the 'packaging insulation', wrapping or 'sheet stuffing' often used for protecting fragile items during shipping. Is there a major difference? Has anyone tried packaging insulation instead of IX? Do they function the same? Of course IX is quilted between thin shim layers; but the guts of te stuff look like common plastic packaging material. Any thoughts?
Come to the Mt Rogers hangout this weekend and see IX in person, Ed!
“I think that when the lies are all told and forgot the truth will be there yet. It dont move about from place to place and it dont change from time to time. You cant corrupt it any more than you can salt salt.” - Cormac McCarthy
Afraid I'll miss the field tests---but looking forward to the follow up discussions here.
Stay warm up there
Ed, I'll send you a yard, if you like.
It was layered like this, from top to bottom:
-1/16" packing ccf like you mentioned
-1/16" packing ccf
-1.6oz ripstop, uncoated
The 'pad' was 3'x5' and weighed 16oz. Heavy for what it was. Worked well in moderate weather. I sent it along with a friend who did half a thru-hike on the AT this last summer - he said it saved his butt on those cold nights. It was the only underinsulation he had.
Having learned a good bit more since then, I don't think I'd bother making another one. Here's my latest thought on what to build.
A synthetic Climashield UQ with a bottom sleeve to insert a layer(s) of insultex into (making it adaptable to expected temp. range). This should conform to the hammock properly, and maintain that air gap that Insultex needs to perform well. Worth a try, anyway.
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By bottom do you mean against hammock or below the climashield? I have some insultex laid out and was on the same track with the climashield. I was planning on the Insultex to the outer cover and the climashield to the inner cover. I was going to make a trapezoid shape to keep it shaped more to hammock.A synthetic Climashield UQ with a bottom sleeve to insert a layer(s) of insultex into (making it adaptable to expected temp. range). Worth a try, anyway.
BTW: Thanks for the quick shipping Mac