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Anonymous Poster #1

Shape Retaining Material

03/20/2011 10:42 PM

Hi I am trying to design an item that comes folded flat in an envelope and can be popped into a sphere when opened. are there any materials (paper or cardboard-like) that "remember" their shape so that once opened they can pop back up? i am just looking at ideas right now so anything, even if unrealistic, would be helpful. thank you
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Usbport
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#1

Re: shape retaining material

03/20/2011 10:50 PM

http://en.wikipedia.org/wiki/Shape_memory_alloy

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#2

Re: Shape Retaining Material

03/20/2011 11:21 PM

How about a rubber balloon?

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#3

Re: Shape Retaining Material

03/21/2011 7:42 AM

You would have to add water, but these would work. Once dry they would have whatever shape you wanted.

I believe these paper lanterns also fold up flat, and open up round.

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