It was planted in 1911 by Luigi Frau Puddu and constituted for some time, in the district, the only example of production of wrapping paper made by recycling used paper and cardboard. Taken over in 1945 by F. Perra, the owner’s son-in-law, it was modernized and remained in business until 1964. A room on the ground floor now houses the main equipment, mute witnesses to the production cycle, which from a pulp of macerated and filtered straw and paper managed to obtain about 10 quintals of paper per day. Production began in the inner courtyard in 4 large pots (now covered with a parking lot) where the straw was soaked until it rotted in water and quicklime and, deprived of excess water, was chopped together with the paper by a granite wheel driven by a motor, which rotated inside each of the three mullers (circular granite tubs) located on the ground floor and capable of kneading about 3 quintals of paper pulp per hour. From the mullers the dough was conveyed into 2 adjacent and communicating collection tanks, in which a metal wheel equipped with cups fished out the suspended dough and deposited it through a channel into the staccino (first wire filter), into the vertical filters and into a collection tray. From here a hollow copper roller (maker drum), lined with a very thin wire mesh, held the dough, which pressed then by a series of felt-covered rollers and having now become paper, was rolled onto a cylinder and deposited on a large table, where it was reduced into sheets and transferred for drying to an aerated room on the upper floor (now the Italian Post Office depot). Transported again to the lower floor, the dry sheets were smoothed and pressed in the mallet and finally collected, according to thickness into stacks (is pippias) of about 50 kilograms, bound with thin iron wire, ready for disposal.
