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Thomas Conly
(conly) - F - M

Locale: Lots of canoeing and snow
Uncoated pack fabric on 04/18/2012 11:45:56 MDT Print View

I'm going to be making a new backpack for myself, having worn out my old one. I'm curious if anyone has used a pack with uncoated fabric before. It seems to me that the PU coating on pack fabric is not very water proof and it wears off after a while anyway. I'll be keeping my stuff in waterproof stuffsacks so I don't see the need to use the heavier, coated material. I also think the pack could potentially dry out faster if it's not coated because the inside stays wet in my experience. However, I'm hesitant to use uncoated fabric because every pack uses coated nylon and it just seems like maybe I'm missing something. Thoughts?

Daryl Daryl
(lyrad1) - MLife

Locale: Pacific Northwest, USA, Earth
Re: Uncoated pack fabric on 04/18/2012 14:08:22 MDT Print View

I've been using uncoated fabric on all my myog backpacks for well over 10 years. I love it. It has all the advantages you mention plus I can throw the bag in the washer. I really like this because I'm a heavy sweater and my packs can get pretty smelly.

I, my wife and a friend have all used 1.9 ounce uncoated ripstop on our myog backpacks without any problems. I am currently testing a a bag made of 1.1 ounce uncoated ripstop. No problems so far.

Michael Ray
(topshot) - MLife

Locale: Midwest
Re: Re: Uncoated pack fabric on 04/18/2012 14:45:23 MDT Print View

Daryl,
Who's your normal supplier of said uncoated 1.9?

Roger Caffin
(rcaffin) - BPL Staff - MLife

Locale: Wollemi & Kosciusko NPs, Europe
Re: Uncoated pack fabric on 04/18/2012 16:25:53 MDT Print View

One reason everyone uses a coated pack fabric is it is actually VERY hard to find an uncoated fabric. The common acrylic coating is used just to bond the threads together rather than for water-proofing. It stops terrible fraying at the edges too.

Cheers

Daryl Daryl
(lyrad1) - MLife

Locale: Pacific Northwest, USA, Earth
Re: Re: Re: Uncoated pack fabric on 04/18/2012 19:06:17 MDT Print View

Michael,

I haven't bought any 1.9 ounce uncoated ripstop for a couple of years but the last I bought was from here:

here

I also still have a couple of rolls of uncoated 1.9 ounce ripstop that I bought in the 1970s for almost nothing. I use it for first drafts. It is a very ugly color (baby crap yellow?). I bought the black fabric to please my wife and I use it for the final drafts.

Forty year old uncoated ripstop on rolls, stored inside a house, away from the sun looks and wears just like new. Not so for the coated nylon. Some of that has morphed into sticky, smelly mess.

Daryl

Edited by lyrad1 on 04/18/2012 19:07:31 MDT.

Colin Krusor
(ckrusor) - M

Locale: Northwest US
Pack fabric on 04/18/2012 23:49:30 MDT Print View

I'm working on a pack right now that uses uncoated fabric. The bottom is reinforced with about 4oz nylon, but most of the pack body is uncoated 1.8oz dacron. It should absorb less water and dry faster than nylon, I think. I don't know how the choice to use dacron over nylon will turn out, but I always use a packliner and I don't expect to regret choosing uncoated fabric.