摘要
为了解常用小麦粉包装材料的物理性能及其防虫效果,测试了5 种包装材料的拉伸性能、直角撕裂强度、抗刺穿能力、燃烧性能、摩擦系数、抗跌落性能、耐压性能和密封性能,并使用赤拟谷盗成虫、烟草甲成虫以及烟草甲初孵幼虫对其防虫效果进行了测试.结果表明:在力学性能上,编织袋和铝箔袋表现出了较佳的抗拉伸、抗撕裂能力和抗刺穿能力,当作为包装袋使用时,无纺布和编织袋表现出较佳的耐摩擦、抗跌落、耐压性能.5 种常用包装材料都具有保护小麦粉不受储粮害虫侵染的能力,特别是真空塑料袋和铝箔袋可完全保护小麦粉不受储粮害虫侵害.
Abstract
This study investigated the physical properties and pest resistance of five common packaging materials.Tests were conducted on tensile properties,right-angle tearing strength,puncture resistance,combustion performance,friction coefficient,drop resistance,pressure resistance,and sealing performance.Pest resistance was evaluated using adult Tribolium castaneum(Herbst),adult Lasioderma serricorne(Fabricius),and newly hatched larvae of L.serricorne.The results showed that,in terms of mechanical properties,woven bags and aluminum foil bags exhibited superior tensile,tear,and puncture resistance.However,when used as packaging bags,non-woven fabrics and woven bags demonstrated better performance in friction,drop,and pressure resistance.All five packaging materials effectively protected wheat flour from stored grain pests,with vacuum plastic bags and aluminum foil bags providing complete protection.
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