Abstract
The work aims to study the vibration response and damage of kiwifruit in five different packaging forms, so as to provide theoretical basis and scientific guidance for the e-commerce packaging of kiwifruit. Hongyang kiwifruit was taken as the research object, and the five forms of kiwifruit e-commerce packaging (EPE liner, EPS liner, PET capped tray, corrugated separator and EPE net) commonly used in the current market were studied by sweep frequency vibration and random vibration tests. The parameters such as resonance frequency, vibration transmission rate, damage area, hardness, weight loss rate and soluble solids content (SSC) were obtained, and the effects of packaging form on the vibration response and post-vibration damage of kiwifruit were analyzed. The results showed that the resonance frequency of kiwifruit in PET capped tray and EPE net was small, which was 20 ~ 30 Hz and within the vibration range of road transportation, such packaging was prone to resonance damage. The resonance frequency of kiwifruit packaged in corrugated separator was the largest, and the vibration energy was lower in the range of 50 ~ 75 Hz. The vibration transmission rate of kiwifruit under five kinds of packaging was:EPE net > EPE liner > corrugated separator > EPS liner > PET capped tray. The vibration transmission rate of PET capped tray packaging was the lowest, which was 1.68, and the vibration isolation effect was the best. The vibration transmission rate of EPE net and EPE liner packaging was higher, which was 3.16 ~ 3.72, and the vibration isolation effect was poor. Within 24 h after vibration, the fruit hardness decreased by 13.5% ~ 48.7%, softening rate increased by 9.0 ~ 40.4%, weight loss rate increased by 6.7% ~100.0%, SCC increased by 3.2%~15%, and damage area was 981 ~ 6 931 mm2. Among five kinds of packaging, the PET capped tray has the best protection effect on fruit, and corrugated separator and EPE net are poor in protection effect.
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WU Ying-tong, WANG Li-jun, SONG Hai-yan, SUN Yi-ming, MA Xian-run, ZHANG Li-jun, WU Zi-ming.
Random Vibration Response and Damage of Kiwifruit E-commerce Packaging[J]. Packaging Engineering. 2023(19): 67-74 https://doi.org/10.19554/j.cnki.1001-3563.2023.19.009
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