material and some of them are very flexible let's look at one. as if it's really like a plastic film that you can pull and stretch. well now we want to see how we can do it better and optimize the manufacturing process. of. the. chicken feathers are made up mainly of the protein keratin the rest is. character and is also found in hair. nails. and let's provide structural stability. keratin has both water repellent and water attracting properties making it ideal for use in all sorts of polymer first the feathers a ground up the fat is extracted in several steps using bio based chemicals.