1 ·The professionally designed Paper Manufacturing template for MS PowerPoint and Google Slides is an excellent choice to provide a creative makeover to your presentation Utilize the deck to describe the process of converting raw materials such as wood pulp recycled paper or other fibers into paper products such as newsprint writing paper
Refiner pulp and thermo mechanical pulp are produced by chips These chips are ground by passing them through rapidly rotating in both processes In the second stage after refining the pulp is screened cleaned and most of the process water is removed in preparation for paper making Bleaching Process
·3 • The kraft process also known as kraft pulping or sulfate process • Is an industrial process for conversion of wood into wood pulp consisting of almost pure cellulose fibers • Treatment of wood chips with a mixture of sodium hydroxide and sodium sulfide known as liquor • That breaks the bonds that link lignin to the cellulose
·Pulp and paper industry Case study Presentation by Dalia Jankunaite Introduction • The pulp and paper industry converts wood or recycled fibre into pulp and primary forms of paper • In the 1800s there was a shift away from using cotton rags for paper production Wood became the most important source of fiber
Pulp Making Process 7 From this chemical pulping process longer fibres can be produced so stronger paper can be made but this process has lower yield of cellulose about 50% and more expensive Besides that the pulp remains brown and usually bleaching is needed; non bleaching pulp is used to made brown paper bags or bleaching pulp is used to made high quality white
·10 Raw water use Pulp mills are big water users The total requirement of raw water has through cleaner production measures been reduced from about 200 300 m3 per ton of pulp in 1970 to well below 50 m3 /ton in some mills even below 10 m3 /ton Consumption of fresh water can seriously harm habitats near mills reduce water levels necessary for fish and
·Chapter 2 The Pulp and Paper Making Processes The modem manufacture of paper evolved from an ancient art first developed in China ca 105 Although the modem product differs considerably
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