Apparatus for making a sheet of material comprising vegetable and/or alkaloid substances

An apparatus for making a sheet of material comprising vegetable and/or alkaloid substances, the apparatus including:

• a roller rolling mill system comprising a plurality of rollers rotatable about respective rotation axes parallel to each other,
• the rollers being operatively adapted to receive the material adhering to respective working surfaces, and
• the rollers being further arranged in succession one adjacent and substantially tangent to the other defining a rolling mill path having a rolling mill direction, wherein a rotation direction of a roller is opposite to the rotation direction of the adjacent roller,
• along the rolling mill path being provided between two adjacent rollers respective pressure lines substantially adapted to press the material so as to provide the latter with a sheet-like shape,
• a scraping system configured to engage by contact the working surface of a transfer roller of the plurality of rollers along a contact line so as to detach the material having the sheet-like shape from the transfer roller,
• wherein
• the scraping system comprises a closed-loop endless scraping band operatively adapted to engage the working surface of the transfer roller along the contact line by means of a scraping edge,
• the endless scraping band being movable at the contact line parallel to the rotation axis of the transfer roller by means of an actuating assembly.