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2021 Vol.53, Issue 5 Preview Page
Effect of the PVA Impregnation Treatment Conditions on the Strain and Physical Properties of Paper

PVA 침지처리 조건에 따른 종이 신장률 및 물성 변화 연구

Yong-Dae Heo1
,
Joon-Hyung Yoo2
,
Yong Joo Sung3†
허용대 1
,
유준형 2
,
성용주 3†
1Korea Minting, Security Printing & ID Card Operating Corp., Deputy research manager
2Korea Minting, Security Printing & ID Card Operating Corp., Researcher
3Department of Biobased Materials, College of Agriculture and Life Science, Professor
1한국조폐공사
2한국조폐공사
3충남대학교 농업생명과학대학 환경소재공학과
†Corresponding author: E-Mail: yosung17@cnu.ac.kr (Address: Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University, Daejeon, 34134, Republic of Korea)
30 October 2021. pp. 104-114
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Abstract

Strain is one of the most important factors in deforming a sheet-like paper into a three-dimensional structure. This study evaluated the changes in the strain and physical properties according to the impregnation treatment conditions using a base paper made of cotton fibers. PVA (polyvinyl alcohol) was used as the impregnating liquid, and borax was used as its hardening liquid. Boric acid and caustic soda were used to control the pH of the borax liquid, and glycerine was used to control PVA’s degree of hardening.

The results showed that the strain in the machine driection (MD) direction decreased as the pH of the hardening liquid increased. The tensile index and the rupture indexs were highest at pH 8.5. The strain, tensile and rupture indexes according to the borax concentration were the higher value at 0.5% in the MD direction and 1.0% in the cross direction (CD) direction. However, the tear index continued to decrease as the borax concentration increased. The strain increased as glycerine concentration of the hardening liquid increased, and the tensile and the rupture indexs showed opposite trends. The strain and the physical properties were greatly affected by the pH, borax, and glycerine concentration of the hardening liquid.

Keywords
Strain
PVA
impregnation treatment
3D forming
borax
glycerine
References

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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 53
  • No :5
  • Pages :104-114
  • Received Date : 2021-10-07
  • Revised Date : 2021-10-23
  • Accepted Date : 2021-10-25
  • DOI :https://doi.org/10.7584/JKTAPPI.2021.10.53.5.104
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