缓冲包装对甜瓜静载损伤影响的分析

通过对甜瓜在不同条件下采用缓冲材料包装前后的静载压缩实验以及缓冲材料的拉伸实验,分别获得了甜瓜裸果和缓冲包装后的压缩特性及缓冲材料的拉伸特性.结果表明：采用缓冲材料能明显改善甜瓜果实受压过程中的变形情况;缓冲材料EPS的纵向拉伸强度高于EPE,在相同加载速率下,使用EPS薄膜作为缓冲包装材料时,果实受压的最大屈服极限比使用EPE时增加了20%,且果实的受损情况明显减小.实验分析可为防止和减轻甜瓜在储运中由于挤压等机械胁迫造成的损伤而进行的缓冲包装设计提供一定的理论依据.

Analysis on the Effect of Cushion Packing on Anti-Pressing Properties of Muskmelon under Static Loading

Both the pressing curves and the strength curves of cushion materials were obtained respectively through of muskmelon under loading.The results show that cushion material may obviously reduce the damage degree of muskmelon compressed;on the same loading condition,the longitudinal strength intensity of the EPS material is superior to that of the EPE material.The max yield-limit values of muskmelon fruits compressed with EPS material packing is 20% higher than that with EPE material.The analysis may provide theory basis for the cushion packing design to prevent and reduce the fruit’s damage during storage and transportation process.