On page 124 of Chinese Express, a book for beginner students of Chinese: "The sentence with 'bǎ 把' is very popular and important in Chinese. Its structure is: Subject + bǎ 把 + Object + Verb + Other parts…"
And that's all the explanation we get for this bit of grammar. Examples using this sentence pattern follow, but they don't show us why it's used or in what context. Sadly, many of the books I've picked up so far are like this.