continuous improvement in performance is essential for the success of the paperboard industry. strength improvement has always been an important consideration for papermakers. strength increasers are critical components for manufacturing of paperboard. these materials provide not only the required strength quality to paper products but also can improve the machine productivity and process effic...

For preserving food packed in environmentally friendly and recyclable paperboard packages, it is important to have sufficient gas barrier performance of the container. Paperboard has poor intrinsic properties overcome this deficiency, so a coating needed that does not hinder recycling substrate. However, recyclability such coatings been rarely studied. Here, both removal an alkali-soluble resin...

The influence of TiO2 nano-particles (nano-TiO2) was studied relative to the mechanical and optical properties of CMYK printed paperboard after coating with a UV-curable varnish. Commercial duplex paperboard (glazed grayback paperboard, 230 g/m) was printed with a CMYK offset printing process. Board samples were coated with a nano-TiO2 modified UV-curable varnish at four treatment levels (0, 0....

The purpose of this paper is to analyze the effect of computer usage on the demand for paper and paperboard products. A log-linear model is developed to analyze the effect of computer usage on the demand for four categories of paper, newsprint, printing/writing paper, packaging paper and household/sanitary paper. The analysis is divided into two parts. The first part is US monthly analysis. We ...

The economic transition in China poses new questions in studying product demand. In this study, we investigate the demand pattern and structural changes during the economic transformation using annual data from the paper and paperboard industry in China. Instrumental variable estimations as well as cointegration analysis and error-correction models are applied to the analysis. Our results show ...

Digital image correlation was used to measure the full-field deformation of paperboard and handsheet tensile specimens. The correlation technique was able to accurately measure strain in regions 0.6 by 0.6 mm. Results showed the variation of strain to be much larger than has been previously reported. For machinemade paperboard tested in the cross-direction, the variation of strain increased thr...

This work presents research on the effects of polycaprolactone (PCL) and PCL modified with silica (Si2) nanoparticles, on the color change of offset printed paperboard. The nanocomposite was prepared with three different concentrations (1%, 2% and 3%) of SiO2, and applied in four different coating thicknesses (4 μm, 24 μm, 40 μm and 80 μm). The color values of the printed sample were measured b...

This study assesses the incorporation of nanocellulose in a paperboard feedstock emulating two scenarios industrial processes. It included production 170 g/m2 paperboard, using mixtures short-fiber and long-fiber fractions from recycled pulps with typical mill additives. In all cases, 3 wt. % was added to pulp suspensions. The first scenario involved three types addition mixture 78 long-fiber/2...

Experimental evidence for a correlation between paperboard edgewise compressive strength and the product of the in-plane normal stiffness and out-of-plane shear stiffness is presented. A mathematical theory, which describes compressive failure as interlaminae shear failure due to prebuckling bending of an initially curved "critical" lamina, is developed. The theory is in accord with failure ana...

The replacement of plastic packaging by paperboard can significantly contribute to meeting sustainability goals in important application fields, such as food packaging. (water) barrier properties paperboard-based products need, however, be improved. Waterborne coatings offer an environmentally friendly possibility enhance these properties, which turn highly depend on the coating chemistry and f...