THE STUDY OF CROSS SECTION OF MULTYLAYER CARDBOARD WITH USE OF ION BEAM CUTTING TECH-NOLOGY
UDC 676.274
Abstract
This scientific article contains results of research the two layers cardboard`s cross-section produced by ion beam cutting technology with converting of cross-section image by computer programs. The cross-section of two layers cardboard`s which produced by traditional wet method and aerodynamic forming method was presented to compare. The bottom layer was obtained by the traditional wet method from old corrugated cardboard recovered paper and the top layer was obtained by aerodynamic forming method from print recovered paper. The boundary layers, cut fibers, fibrils, additives, porous area, and lines of contact fibers for the each layer and the contact line of the fiber walls were determined with converting and analyzing of cross-section image by computer programs. The developed method made it possible to separate lines of contact fibers which determine the emergence of inter fiber bonds from the contact line of the fiber walls. The comparison of the results allowed explaining in a new way the decrease in mechanical parameters of cardboard during dry preparation of recovered paper. The ion beam cutting technology with converting of cross-section image by computer programs allowed determining cut fibers area and porous area. This made it possible to quantify the effect of fiber distribution factors on the mechanical property of cardboard. The content of the additive (calcium carbonate) and its distribution in layers is estimated by the spectrum of the elemental composition.
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