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Effect of Attapulgite on the Retention of Pressure Sensitive Adhesive in Stock
  
DOI：10.11980/j.issn.0254-508X.2018.08.006
Key Words:attapulgite  pressure sensitive adhesive  retention  strength
Fund Project:国家自然科学基金（31770627）；南京林业大学科技创新基金（CX201125）；江苏省制浆造纸科学与技术重点实验室（南京林业大学）开放基金（201523）。
Author NameAffiliation
GAO Qing-chun1，2 1.College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing，Jiangsu Province， 210037
2.Jiangsu Province Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province，210037 
CHENG Jin-lan1,2,* 1.College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing，Jiangsu Province， 210037
2.Jiangsu Province Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province，210037 
DU Shu-lan1，2 1.College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing，Jiangsu Province， 210037
2.Jiangsu Province Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province，210037 
YAO Kai-kou1，2 1.College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing，Jiangsu Province， 210037
2.Jiangsu Province Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University，Nanjing，Jiangsu Province，210037 
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Abstract:The pressure sensitive adhesive latex was well mixed with the bleached softwood pulp or OCC pulp to prepared handsheets by using a handsheet former after adding the attapulgite and cationic additives，the effects of attapulgite addition on the retention of pressure sensitive adhesive and the paper strength were studied.The result showed that the attapulgite application could be benefit to reduce the harm of adhering to the dry cylinder of the pressure sensitive adhesive， improve the retention of the adhesive in the paper.When using bleached softwood pulp as fiber raw material and the dosage of attapulgite was 5%， the retention rate of pressure sensitive adhesive was as high as 99.92%.On the other hand， attapulgite could also increase the strength of the paper from OCC pulp.After adding 5% attapulgite， the tensile index of paper increased by 5.41% compared with the control sample．
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