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GCSE Design and Technology · key term
The removal of printing ink from recovered paper during recycling.
Used by Edexcel and Eduqas
Specification 3.3.4 · Paper 1
Revise: Cost FactorsRecovered paper may need sorting, repulping and de-inking. These operations require equipment, labour and energy; chemicals and waste disposal can add further costs.
Component 1
Removing printing ink from recycled paper pulp, for example by flotation.
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De-inking can use flotation to separate these unwanted materials from the pulp. The recovered fibres then enter the sheet-making process. Recycling changes the source and preparation of the fibres, but it does not remove the need to form, press and dry the new sheet.
