Unverified85% confidenceDecision RuleTime unknown
承重堆叠场景选PP聚丙烯材质且壁厚≥2mm的箱体，单箱静态承重需≥50kg才能安全堆叠3-4层；PET或再生塑料薄壁款堆叠2层以上易变形塌陷
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Unverified承重需求判据：底层箱体标称静态承重≥50kg才能安全堆叠3层以上，堆放书籍/工具等重物时选PP聚丙烯厚壁款（壁厚≥2.5mm），普通PET薄款堆2层就会中间凹陷变形90% similarUnverified承重堆叠场景优先选PP材质且壁厚≥2mm的箱体，单箱静态承重需标注≥30kg才能安全叠3层以上；布艺箱无硬支撑结构，叠2层以上必塌陷变形88% similarUnverified叠放层数超过4层时优先选PP材质硬质盒（承重≥5kg），PET软质盒叠3层以上易变形塌陷86% similarUnverified承重叠加优先选PP聚丙烯材质且箱壁厚度≥2mm，可安全叠放3-4层；布艺收纳箱无骨架结构叠放超过2层易塌陷变形，仅适合放置衣物等轻物85% similarUnverifiedPP塑料收纳箱壁厚应≥0.8mm才能承重堆叠，薄壁款（<0.5mm）叠放2层以上会变形挤压，无法长期堆高85% similar
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