this work investigates the feasibility of using recycled high density polyethylene (rhdpe), recycled polypropylene (rpp) and old newsprint fiber (onp) to manufacture fiber reinforced composites. the boards were made through air-forming and hot press. the effects of the fiber loading and coupling agent content on tensile, flexural, internal bond properties and water absorption and thickness swel...

This work investigates the feasibility of using recycled high density polyethylene (rHDPE), recycled polypropylene (rPP) and old newsprint fiber (ONP) to manufacture fiber reinforced composites. The boards were made through air-forming and hot press. The effects of the fiber loading and coupling agent content on tensile, flexural, internal bond properties and water absorption and thickness swel...

Although the world's forest resources have decreased, paper production has increased. Utilization of recycled fiber Recycle Fiber as a substitute for new Virgin in significant influence world industri. In 2011 industri reached 403 million tons and about (53%) was produced from paper. is cost competitive because lower than Fiber's fiber. Approximately (80%) this type comes three sources, namely ...

the objective of this study was to investigate the relationships between 16 process variables of the cmp tower chemi-mechanical pulp, and 17 newsprint quality properties at mazandaran wood and paper industries and to develop predictive models. after preparation of suitable data series considering the time needed for pulp to paper, the relations between process dependant and newsprint independen...

Most existing elasticity estimates for the pulp and paper industry are based on aggregate products (e.g., total paper, paperboard, or paper except newsprint). Using United States data, we present and evaluate econometric output supply models for four relatively disaggregated paper products: newsprint paper (NP), printing/writing paper (PWP), tissue paper (TP), and packaging paper (PP). Sample p...

this study was aimed to investigate the possibility of using magnesium hydroxide as an alternative for sodium hydroxide in deinking of newsprint and magazine mixture. the old newsprint and magazine mixture (onp/omg -70/30) was treated by magnesium hydroxide at three levels: 1, 1.5 and 2 percent (based on oven dried pulp weight), for 20 min. optical and mechanical properties and effluent cod loa...

The paper provides projections for US newsprint demand up to 2020. First, various specifications of the standard model used in forest product demand literature, which we call the classical model, were estimated using annual data from 1971–2000. The results indicated that structural change in the newsprint consumption pattern took place at the end of the 1980s. The classical model fails to expla...

Gas phase treatments of dry-fiberized newsprint were investigated as a way to impmve intefibre bonding and thereby to minimize the use of water for recycling newsprint. Chlorine dioxide, nitrogen dioxide, and ozone were studied as gaseous oxidizing agents. The report includes the results of an optimization study for the ozone treatment and results of experiments designed to establish the mechan...