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Preparation of Heat-resistant Paper Straw Paper and Its Safety Evaluation
Received:June 25, 2020  
DOI：10.11980/j.issn.0254-508X.2020.11.003
Key Words:paper straws  heat resistance  adhesives  water extract content  turbidity
Fund Project:“南太湖精英计划”创新领军人才项目资助（2018）。
Author NameAffiliationPostcode
XU Yongjian College of Bioresources Chemical and Materials Engineering，Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper，National Demonstration Center for Experimental Light Chemistry Engineering Education，Key Lab of Paper Based Functional Materials of China National Light Industry，Shaanxi University of Science & Technology，Xi’an，Shaanxi Province，710021 710021
DUAN Yerong College of Bioresources Chemical and Materials Engineering，Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper，National Demonstration Center for Experimental Light Chemistry Engineering Education，Key Lab of Paper Based Functional Materials of China National Light Industry，Shaanxi University of Science & Technology，Xi’an，Shaanxi Province，710021 710021
ZHOU Jiajun Zhejiang Huafeng Paper Technology Co.， Ltd.， Huzhou，Zhejiang Province，313000 313000
LIU Yan College of Bioresources Chemical and Materials Engineering，Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper，National Demonstration Center for Experimental Light Chemistry Engineering Education，Key Lab of Paper Based Functional Materials of China National Light Industry，Shaanxi University of Science & Technology，Xi’an，Shaanxi Province，710021 710021
LI Wei College of Bioresources Chemical and Materials Engineering，Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper，National Demonstration Center for Experimental Light Chemistry Engineering Education，Key Lab of Paper Based Functional Materials of China National Light Industry，Shaanxi University of Science & Technology，Xi’an，Shaanxi Province，710021 710021
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Abstract:Heat-resistant paper straw paper was prepared from bleached sulfate softwood pulp and hardwood pulp by wet process and surface sizing as well as heat-resistant adhesive coating. Stiffness， ring crush strength， wet strength and contact angle were mainly used to evaluate the performance of paper straw paper. The effects of heat-resistant adhesive and common adhesive on the performance and safety of paper straw were compared. The results showed that surface sizing dosage of 14 g/m2 and a AKD dosage of 0.10%（on the paper basis weight， which was 100~140 g/m2 for lining paper and 40~80 g/m2 for face paper）. The stiffness of lining paper and face paper were 3.59 mN·m and 2.63 mN·m， the ring crush strengths were 1.75 kN/m and 0.37 kN/m， the tensile strengths were 7.68 kN/m and 3.57 kN/m， the wet strengths were 1.43 kN/m and 0.78 kN/m， respectively； The absorbabilities of lining paper and face paper were 30.4 g/m2 and 27.2 g/m2，the contact angles were 145.9°和149.4°， and their hot water extracts were 3.252% and 3.312%， respectively. The turbidity of extract was about 2 NTU. The adhesive strength of heat-resistant adhesive was not only as good as the ordinary adhesive ， but also had the heat-resistant property. Moreover， it would not dissolve in water. It could be used for binding heat-resistant paper straw paper， which met the safety requirement for heat-resistant paper straw paper.
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