METHOD FOR PRODUCTION OF PAPER, CARDBOARD OR HEAVY CARDBOARD USING BAOBAB BARK BAST FIBERS, BAOBAB FRUIT FIBERS AND/OR FICUS NATALENSIS BAST FIBERS AS PAPER RAW MATERIAL Russian patent published in 2019 - IPC D21C5/00 D21H11/10 

FIELD: pulp and paper industry.

SUBSTANCE: invention relates to production of paper, cardboard or heavy cardboard. Disclosed is a method of producing paper, cardboard or heavy cardboard using baobab bast fibers, baobab fruit fibers and/or Ficus natalensis fibers as paper raw material. Method includes the following steps: obtaining baobab fruit fiber and/or baobab bast fibers as raw material from baobab and/or Ficus natalensis bast fiber as a raw material of Ficus natalensis; grinding obtained material while adding water; heating and preferably bleaching produced pulp; applying a pulp onto a sieving device, including removing a portion of the added water to produce a paper fibrous loose web; pressing the obtained paper fibrous loose web; and drying the obtained paper fibrous loose web. Produced paper, cardboard or heavy cardboard can be used for production of natural paper, papier-mâché, art paper, hygienic paper, tissue paper, graphic paper, paper, cardboard or heavy cardboard for packing purposes, or paper for special technical purposes.

EFFECT: extraction of raw materials without cutting trees and improvement of technological operations in production of paper.

13 cl