Non-iron canisters are set in order (6-9)

I believe the answer is:

crease-resistant

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'non-iron' is the definition.
Both the definition and answer are adjectives.
Perhaps they are linked in a way I don't understand?

'canisters are set in order' is the wordplay.
'in order' indicates anagramming the letters (the letters in a new order).
'canisters'+'are'+'set'='canistersareset'
'canistersareset' anagrammed gives 'CREASE-RESISTANT'.

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I've seen this clue in the Sydney Morning Herald.

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