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Posted by Michael Daly on August 16, 2006, 12:56 am
duh wrote:
> Are those the only two coatings used? What about coated packcloth or
> something like that (hopefully that exists.
The most common for packcloth and similar nylons and polyesters is urethane.
Silicone is relatively new. If Penny's comments on telling them apart leave you
wondering, remember that silnylon is translucent (except maybe black silnylon??).
There are PTFE coatings (e.g. GoreTex) but those are white. Probably a couple
of others.
If you bought it cheap at a Walmart, it's likely urethane coated.
Mike
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Posted by Taunto on August 16, 2006, 10:17 pm
Michael Daly wrote:
> duh wrote:
>
>> Are those the only two coatings used? What about coated packcloth or
>> something like that (hopefully that exists.
>
>
> The most common for packcloth and similar nylons and polyesters is
> urethane. Silicone is relatively new. If Penny's comments on telling
> them apart leave you wondering, remember that silnylon is translucent
> (except maybe black silnylon??).
>
> There are PTFE coatings (e.g. GoreTex) but those are white. Probably a
> couple of others.
>
> If you bought it cheap at a Walmart, it's likely urethane coated.
>
> Mike
I did get some silnylon at Walmart, 15 yards, $1/yd. I had to go to 7
stores to find some though. That stuff was like the Holy Grail there
for a bit for me (folks on the backpackinglight.com list were talking
about finding it in the $1 bin at Walmart). Then, I realized, I could
also be picking up some of this other outdoor fabric for prototypes and
such, which I've been doing.
I got some nylon that, well, would do really well for a Halloween
thru-hike, due to the color scheme. Orange with black ripstop grid.
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Posted by small change on August 16, 2006, 9:34 am
fabric from Walmart I'm doing prototypes with.
>>
>>
>> Urethane coating is always on one side of the fabric, not both. Silnylon
>> is typically impregnated and looks the same on both sides. Not sure how
>> a burn test would come out.
>>
>>
>>
> Are those the only two coatings used? What about coated packcloth or
> something like that (hopefully that exists. I just pulled it out of the
> air. I've got something like it here).
Mostly, I'm trying to think as I think there's one other. The typical coated
packcloth, cordura, or tent fly is urethane coating. Occasionally you'll
find vinylized Cordura.
P.
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Posted by duh on August 14, 2006, 4:58 pm
small change wrote:
> www.backpacking.net/bbs has a gear maker's board that has many, many
> experienced tent and tarp makers who are familiar with the designs,
>
> www.owfinc.com sell both nylon grosgrain, and folded nylon bias binding,
> which is what is used on tent seams. Grosgrain is rarely used in tents
Oh, and thanks for the pointers. I already knew about owf, but not the
other.
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Posted by Michael Daly on August 14, 2006, 5:34 pm
small change wrote:
> Grosgrain is rarely used in tents
> except to cover exposed floor and wall join seams.
Some tent makers are starting to use grosgrain and twill tape where they used to
use webbing. Loops for tying in guy lines, for example, are often grosgrain now
and things like fastex buckles are used with twill tape. Lighter and smaller is
the driving force.
I can't believe how strong some of these silnylon + grosgrain combinations are
in wind. Every time I pull out my tarp, others ask if I'll take it down in
heavy wind - I haven't yet and nothing has let go (yet).
Mike
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