Topic

3M clear transfer tape adhesion strength for various cuben applications

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Steven Adeff BPL Member
PostedMay 12, 2014 at 4:46 pm

I've been playing around with cuben lately, I've made a tarp and a few stuff sacks. I've also been doing some tests as to adhesion strength and use as well as doing some thinking and research.

I'm wondering what people's thoughts are on the following idea…

Not all taped junctions of cuben require the strength of adhesion that the popular 9485 tape provides, which is roughly rated at 150oz/in, for some applications 25oz/in, which many of the cheaper 2mil tape provides. Has anyone already played with using these different tapes for applications in their cuben projects where the stronger adhesion is not required, and if so, what has been your success?

My thoughts are that for things like edge folds, "straps" (I don't know if there is a more commonly used term for creating grosgrain replacements by taping a couple 1/2" strips of cuben together), stuff sack edges, etc. that the cheaper lower strength tapes would be more than strong enough since these parts of the gear see little, if any, shear stress on the tape.
I'd even go so far as to conjecture that "patches" that do not see much shear stress on the tape could also use a weaker tape, if not as low as 25oz/in, perhaps 60oz/in might be enough.

Thoughts?

Nick Smolinske BPL Member
PostedMay 12, 2014 at 9:09 pm

I don't have any helpful ideas, but I'm curious where you got the strength numbers. I can't find them in the 3M spec sheet, but I'm not very familiar with transfer tapes and I could be missing it pretty easily. It would be nice to know how to tell the strengths of all the different tapes. And 9485 is *expensive*.

Roger Caffin BPL Member
PostedMay 12, 2014 at 10:27 pm

> And 9485 is *expensive*.
And cheap crappy Chinese tape is cheap … and very crappy. And it lets go.
YGWYPF

Cheers

Nick Smolinske BPL Member
PostedMay 13, 2014 at 9:43 am

Roger,

I was wondering more about other 3M tapes, rather than cheap off-brand options. For example, 9460 is half the price of 9485. I'm assuming it is quality stuff, but with less holding power? It's 2mil instead of 5mil, I know that much.

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