Simple past tense and past participle of unroll.(verb)
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Use "unrolled" in a sentence
"A huge chart of Southeast Asian seas, a Victorian-looking affair on linen with names in Dutch, unrolled between us."
"Like a huge reel of thread the long winter term unrolled itself."
"There had been a bath – or something equally cleansing – in a pail near a fire where ragged but agreeable people were cooking herrings, sausages, and other delicacies on little girdirons or pans that they unrolled from the strange bundles that were their luggage."