S. R. D. Guha , Y. K. Sharma , G. M. Mathur , Rajesh Pant , D. K. Jain

Abstract

The suitability of Pinus kesiya grown in Manipur has been investigated for the production of cable insulation paper. The average fibre length in thls species 2.28 mm and average diameter 0.0399 mm. Under the conditions studied at unbleached yield of 55.6 percent on oven-dry chips the breaking length was 8.22 km and tear factor was 148.5. The paper made on the pilot plant was evaluated for electrical properties. The electrical strength was comparable with imported paper. The conductivity of water extract and ash cOntent of the paper was, however, high. This was due to the hard-water used for the manuracture of paper.

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S. R. D. Guha , Rajesh Pant , B. G. Karira

Abstract

Laboratory experiments on the production of chemical pulps for writing and printing papers by soda process from Cymbopogon citratus (DC.) Stapf after extracting the essential oil are described. The average fibre length Was 0.94 mm and the average fibre diameter was 0.013 mm. Bleached pulps, only in lower yields and less strength properties than sabal grass could be prepared from this raw material.

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S. R. D. Guha , Rajesh Pant

Abstract

no abstract

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S. R. D. Guha , Rajesh Pant , B. G. Karira

Abstract

Laboratory experiments on the production of chemical pulps for writing and printing papers by soda process from unextracted and extracted Cymbopogon winterianus Jowitt, (Java citronella grass) are described. The average fibre length was 0.98 mm and the everage fibre diameter was 0.014 mm. Bleached pulps of good strength properties could be prepared from this raw material.

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