Tyvek, made by dupont http://www.tyvek.com/
I'm sure you can buy it however you want.  Call them and they'll point
you in the right direction, depending on your volume.

-Adam

rad0 wrote:

>what is the brand name for
>
>the tough fiber reinforced paper used for 11 x 14 shipping envelopes?
>the stuff that you cannot tear
>
>can you get this material in big sheets?
>
>thanks
>
>--
>http://www.piclist.com hint: To leave the PICList
>mailto:piclist-unsubscribe-request@mitvma.mit.edu
>
>
>
>
>

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu