From 8709d3d92e379040582265870b50f21794fb102f Mon Sep 17 00:00:00 2001
From: Zach Fredin <zach.fredin@cba.mit.edu>
Date: Tue, 17 Mar 2020 15:05:06 -0400
Subject: [PATCH] Update README.md

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 # melt-blowing
 
-design and prototyping of a FabLab-able polypropylene melt blowing setup for distributed manufacture of filter media
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+design and prototyping of a FabLab-able polypropylene melt blowing setup for distributed manufacture of filter media
+
+## literature
+dimensional analysis of process and discussion of nozzle types (1988): https://pubs.acs.org/doi/pdf/10.1021/ie00084a021
+Exxon patent showing slot-style melt blowing nozzle: https://patents.google.com/patent/US3849241A/en?oq=3%2c849%2c241
+UTenn study on melt blowing: https://onlinelibrary.wiley.com/doi/epdf/10.1002/pen.760302202
+
+## melt blowing videos
+video of a polypropylene filter melt blowing line in action: https://www.youtube.com/watch?v=cGQ4piMNQ_E
+fast construction of a melt blowing line for covid-19 masks: https://www.youtube.com/watch?v=p9lchhBE7cE
+a smaller line with a built-in rotary mask die cutter: https://www.youtube.com/watch?v=KgWHNQo7j1k
+pilot-scale melt blowing machine making a mess: https://www.youtube.com/watch?v=SOFfpGnMjOc
-- 
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