Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Papro S AfiledCriticalPapro S A
Publication of CH219669ApublicationCriticalpatent/CH219669A/de
D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
D21H27/30—Multi-ply
D21H27/32—Multi-ply with materials applied between the sheets
CH219669D1940-12-031940-12-03Verfahren zur Herstellung von Verpackungen aus imprägnierten Stoffen.
CH219669A
(de)