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Improvement of the Strength Properties of OCC Pulp by Alkali Soaking Pretreatment
  
DOI:10.11980/j.issn.0254-508X.2011.11.003
Key Words:soaking pretreatment  caustic soaking  OCC  strength properties  repulping efficiency
Author NameAffiliation
崔举锋 天津科技大学天津市制浆造纸重点实验室,天津,300457 
臧永华 天津科技大学天津市制浆造纸重点实验室,天津,300457 
许 英 天津科技大学天津市制浆造纸重点实验室,天津,300457 
刘洪斌 天津科技大学天津市制浆造纸重点实验室,天津,300457 
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Abstract:A new method of pretreating old corrugated container (OCC) with caustic solution soaking before repulping or adding sodium hydroxide during repulping has been developed to improve mechanical properties of recycled linerboard made of the OCC. The proposed pretreatment may improve swellability of recycled fibers, leading to significant increase in tensile, ring crush, and burst index of the recycled sheets. The pretreatment also reduces the times needed for OCC repulping, thus increases productivity of the repulper.
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