Thanks for the feedback.
So, when you search "nylon" on USPTO web site you get hits on "nylon" and then there are a ton of other registered trademarks that include the word "nylon" both in the words-only part and in the drawing. The material in question for me is the same way - the word is registered, and several other trademarks using the word are also registered.
So, your gut feeling is that these other trademarks are potentially at risk of challenge from the owner of the single-word trademark?
They may be at such risk, but the more uses of the word which appear, the less likely it may be that the owner of the mark "Nylon" can stop others from using it.
Are you sure "Nylon" is registered?