I'm a great one for reading, and recently I have seen three books and one post with "unraveled" in them. There is no such word as unraveled. To ravel is to come undone, especially for something knitted. If something unraveled, it would knit itself back up, probably magically.

Tunnelers speak of "ravelling ground." They don't like it; it is a which layer which disintegrates as they work on it.

Remember Hamlet's words: "Care, that unknits the unravelled sleave of sleep." (sleave = skein)