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Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paperCentral Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
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Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paperCentral Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper

Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper
Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper Central Pulp & Paper Research Institute (CPPRI), A National level institute to promote R&D in the field of pulp & paper


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RAC Projects of the Institute (Raw Material)


» Waste Paper / Secondary Fibre Processing for the Production of Paper, Board and Newsprint

Image Analyzer used for Dirt Count Analysis
Image Analyzer used for Dirt Count Analysis

The project objectives are to optimize the processing conditions of different waste papers available indigenously and of foreign origin and to study the present practices of waste paper processing in Indian mills and problem being faced by them and their possible solutions.

Study of practices of waste paper processing in Indian mills and problems faced :
Recycling of waste paper in India is rather complex due to inadequate machinery, a nomenclature for Indian standard qualities of waste paper has been defined. The present practices of waste paper processing in Indian mills, problems being faced by them and optimum process parameters for recycling different types of waste paper were studied. The work conducted focused on :

  1. Study of paper samples from different Paper mills using waste paper, laboratory evaluation of waste paper processing techniques with particular emphasis on indigenous varieties and suggesting steps to produce better paper from waste papers.
Due to lack of appropriate technology and inferior waste paper quality received in Indian mills as compared to world standards, mills are facing difficulty in producing better quality pulp from waste paper. Therefore for processing different waste papers following problems faced by Indian mills were studied for taking up the optimization studies :

  1. Slushability of adhesive tapes.
  2. Processing of wet strength papers.
  3. Processing of laminated coated waste papers.
  4. Deinking of old newspapers.
  5. Blending trials using mixed office waste paper & softwood pulp.
  6. Hygro-expansitivity of papers containing waste paper as major furnish component

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