Procedure for the manufacture of a registration paper, special to obtain inscriptions carried out with needle or punch (Machine-translation by Google Translate, not legally binding)

摘要

"PROCEDURE FOR MANUFACTURING A RECORDING PAPER, SPECIAL TO OBTAIN INSCRIPTIONS CARRIED OUT WITH NEEDLE OR PUNCH", characterized by the fact that the white layer and sensitive to pressure, on which the inscriptions are registered, is deposited on a paper base , dyed or of an intense color, said layer being constituted by a cellulose ester, preferably ethylcellulose, in alcoholic solution, acetonic, or combined with a plasticizer, varying the percentage of the latter, depending on the subsequent use to which it is applied. allocates the recording paper, and taking into account whether the needle or punch of the appliance works hot or cold. (Machine-translation by Google Translate, not legally binding)