基于水果包装的可发性聚乙烯结构缓冲性能研究

目的研究可发性聚乙烯水果缓冲包装结构性能。方法以中小尺寸水果包装的圆型结构和方型结构为基础,进行静载实验和跌落冲击实验,分析可发性聚乙烯结构在相关尺寸变化时的缓冲性能。结果随着厚度和宽度的增加,单元结构的载荷逐渐增大,加速度峰值逐渐降低,当宽高比在0.15～0.2变化时,结构的载荷净增值趋于平稳,载荷增长稳定,且圆型结构的承载能力和抗冲击能力均优于方型结构。结论在水果的缓冲包装中,合理设计结构的几何尺寸,更好的发挥材料的缓冲性能,提高结构的缓冲能力和材料利用率,实现缓冲结构的保护功能。

Research on the cushioning performance of expandable polyethylene structure based on fruit packaging

Objective To study the structural properties of expandable polyethylene fruit buffer packaging. Methods On the basis of the round structure and square structure of small and medium-sized fruit packaging, the static load test and drop impact test were carried out to analyze the cushioning performance of the expandable polyethylene structure while the relevant size changes. Results With the increase of thickness and width, the load of expandable polyethylene element structure increased and the peak acceleration decreased. When the aspect ratio changed from 0.15 to 0.2, the net increase of load tended to be stable, and the load growth was stable, and the bearing capacity and impact resistance of circular structure were better than that of square structure. Conclusion In the buffering packaging of fruits, the geometry size of the structure shall be designed reasonably to give full play to the buffering performance of the materials, improve the cushioning performance and material utilization of the structure, and realize the protection function of the buffering structure.