table 2 shows grammage examples target values of nanocellulose based papers prepared from non aqueous suspensions ethanol including the use of sizing agent asa all listed paper grades have been found to be processable from non aqueous suspensions and to the porosity range according to the invention table 3 shows measurement data on mechanical and optical properties of papers according to the invention and comparative papers the data is shown graphically in fig2 nfc 5 and nfc 9 refer to the u2018 water free u2019 papermaking approach compared also to other nfc sheet structures made from aqueous suspensions like nfc 2 and nfc 8 the nfc 2 and nfc 5 papers were composed of 100 wt plain nanofibrillated cellulose 100 5 ground beech fibers and the nfc 8 and 9 papers were composed of 100 wt asa treated nanofibrillated cellulose 100 5 ground beech fibers amount of asa 2 wt the raw nfc 100 5 was obtained from rettenmaier amp s u00f6hne gmbh germany no other additives pigments wood fibers have been used for those nfc films were contained in the samples tested for film formation suspensions of nfc and asa nfc respectively were prepared in water or ethanol with concentrations in the range of 0 2 1 wt.