Open AccessMORPHOLOGICAL PROPERTIES OF THE FIBERS OF DRY DEFIBRATION METHOD FOR CARDBOARD PRO-DUCTION
Author(s) -
Мидуков Николай Петрович,
Лялина Юлия Артемовна,
Куров Виктор Сергеевич,
Смолин Александр Семёнович
Publication year - 2019
Publication title -
himiâ rastitelʹnogo syrʹâ
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.2
H-Index - 6
eISSN - 1029-5151
pISSN - 1029-5143
DOI - 10.14258/jcprm.2020014821
Subject(s) - cardboard , materials science , composite material , corrugated fiberboard , raw material , surface roughness , fiber , specific gravity , surface finish , pulp and paper industry , chemistry , engineering , organic chemistry
Article is devoted to a research of morphological properties of the fibers produced from recovered paper by dry defibration method. Fiber length, roughness, torsion, curvature, fibrillation, fines, etc. properties of the fibers produced by the traditional conventional and dry defibration method are compared. Filler (chalk) losses are estimated by recovered paper preparation in the dry defibration method. The studied morphological properties of fibers and content of chalk define surface (roughness, thickness, whiteness) and mechanical (bursting strength, breaking length) test-liner cardboard indicators with a white surface layer. Determination of morphological properties of recovered paper stock fibers allows recommending a combined method of recovered paper preparation (including dry defibration) for test-liner cardboard manufacturers in our country and in the world. Changes of ash content data before and after dry defibration of fibers determine losses of chalk filler. It is known that content of chalk affects mechanical and surface properties of cardboard. Preliminary results of calculations of energy saving from implementation of dry method, carried out during industrial production, showed that at addition of fibers (25% of total weight of fibers in cardboard) prepared by dry method to the main flow, with preservation of mechanical indices of produced cardboard, up to 50 kWh/t of energy is saved.