Unverified85% confidenceDecision RuleTime unknown
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
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85%
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Long-term
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Unverified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90% 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87% 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85% similarUnverified承重能力看箱壁厚度与加强筋，箱盖标注静态承重≥50kg才能安全叠放3层以上；薄壁箱叠放两层就会塌陷变形挤压内容物85% similarUnverified承重看单层实际承重而非整架承重，实木/多层板单层承重需≥15kg放书籍，钢架冲孔层板单层≥30kg，密度板长期承重超8kg会中间下凹变形84% similar
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