The Evaluation of Recyclability with the Barrier Properties of Paper Based Packaging Material

Yong Ju Lee; Dong Gun Lim; Yoo Bin Son; Ji Min Lee; Park Na Young; Hyoung Jin Kim

doi:10.7584/JKTAPPI.2021.12.53.6.157

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The Evaluation of Recyclability with the Barrier Properties of Paper Based Packaging Material 지류 포장재의 차단 특성에 따른 재활용성 평가

30 December 2021. pp. 157-165

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Abstract

The high barrier paper packaging material is in the form of a paper composite in which a polymer film. As paper layers are combined, they may adversely affect to the repulping efficiency in the recycling process after disposal. In addition, for high-barrier paper packaging materials that require safe transportation and storage of food and so on, wet strength agents and sizing agents are added in the stock composition process to improve wet strength before coating and laminating processes. The wet strength reduces the efficiency of the disintegration process because it forms covalent bonds between the fibers. Therefore, it is concluded that complementary materials with excellent recyclability and high barrier properties are needed. Thus, in this study, after disintegration of the paper based packaging materials according to the barrier and wet strength properties, disintegration characteristics, the characteristics of the stock and image analysis were conducted. When high barrier properties and high wet strength are accompanied, disintegration properties are further deteriorated, which is thought to affect recyclability. As a result of the image analysis, it was analyzed that the rate of micronization and inflow of the coating film was greater as it had high barrier properties and wet strength. Consequently, barrier properties, wet strength, and disintegration properties are incompatible concepts. It is concluded that the strength of barrier properties and wet strength should be adjusted in consideration of recyclability.

Keywords

High barrier coated paper

disintegration

recyclability

barrier property

wet strength

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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 :6
Pages :157-165
Received Date : 2021-12-11
Revised Date : 2021-12-28
Accepted Date : 2021-12-29
DOI :https://doi.org/10.7584/JKTAPPI.2021.12.53.6.157

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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