The most common and most likely answer to this crossword clue is the 6 letter word FOLDED
I've seen this crossword clue in The Guardian
F
O
L
D
E
D
More clues leading to the result FOLDED
Buddy explains!

The straight part
We know that "Crumpled" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case crumpled = folded.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FOLDED mean?
FOLDED verb- To bend (any thin material, such as paper) over so that it comes in contact with itself.
- To make the proper arrangement (in a thin material) by bending.
- To become folded; to form folds.
- To fall over; to be crushed.
- To enclose within folded arms (see also enfold).
- To give way on a point or in an argument.
- To withdraw from betting.
- (by extension) To withdraw or quit in general.
- To stir gently, with a folding action.
- Of a company, to cease to trade.
- To double or lay together, as the arms or the hands.
- To cover or wrap up; to conceal.
- To confine animals in a fold.