RECYCLING OF WET-STRENGTH TISSUE PAPER. PART 2. BASIC PROPERTIES OF SECONDARY FIBERS

The present investigation focuses on morphological characteristics, tensile and optical properties of secondary fibers obtained in various conditions batch low-consistency repulping process for wet-strength tissue paper with 100% bleached softwood kraft pulp. It was found that length-weighted fiber length width values as well distributions remained almost unchanged regardless the time presence persulfates. shortened cycle due to use persulfates lead an increase shape factor from 83.0% 84.1–84.4%, decrease number kinks 0.84 0.72–0.74 zero-span strength recycled handsheets by 10–12%. At same time, resulted coarseness 190 mg/m 230–235 leading a slight bulk its internal bond average 8%. during improves color brightness up 3%.