MACHINE AND METHOD FOR MAKING FIBER OF FIBROUS MATERIAL Russian patent published in 2021 - IPC D21F11/00 B31F1/12 B05C1/04 

FIELD: pulp and paper industry.

SUBSTANCE: group of inventions relates to a paper-making machine (1) suitable for the manufacture of a web (2) of bagged kraft paper and a web (2.1) of low-strength paper, as well as to a method for the selective manufacture of a web (2) of bagged kraft paper and a web (2.1) of low-strength paper in a paper-making machine (1), including a molding section (3) for forming and dewatering a web (2, 2.1) of paper, a pressing section (4) and a drying section (5) with a section (5.1) for pre-drying and a drying section (5.2) for further dehydration of the web (2, 2.1) of paper, as well as a winding device (9), and after the pre-drying section (5.1) there is a crumpling device (10) for crumpling the web (2, 2.1) of paper. According to the invention, it is provided that after the pre-drying section (5.1), an additional sizing device (11) is located, as well as a transfer device (12), which is suitable for selectively transferring the web (2, 2.1) of paper into a crumpling device (10) or into a sizing device (11).

EFFECT: extension of the range of tools to make paper.

14 cl, 2 dwg