( ( ( The material ) used ) ( ( is ( mylar ( polyester film ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN material)) (VP (VBN used))) (VP (VBZ is) (NP (NN mylar) (NN polyester) (NN film))) (. .)))
The material used is mylar polyester film.
(ROOT (S (NP (NP (DT The) (NN name)) (PP (IN of) (NP (NP (NN film)) (SBAR (IN that) (S (NP (NN polyester) (NNS fibers)) (VP (VBP form))))))) (VP (VBZ is) (ADJP (JJ mylar))) (. .)))