Unverified86% confidenceDecision RuleTime unknown
填充物优先选高回弹海绵或记忆棉（密度≥30D），纯PP棉/珍珠棉短期内会塌陷失去支撑；大型犬和重量宠物必须选高密度海绵底座，否则3个月就压扁
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86%
Confidence
Long-term
Relevance
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Unverified记忆棉密度需≥45D（kg/m³）才能有效分散大型犬体重、预防褥疮，密度＜30D的普通海绵垫3-6个月即塌陷失去支撑86% similarUnverified中大型犬(体重≥20kg)选购时中间填充层珍珠棉或高密度海绵密度需≥40D，厚度≥5cm，否则趴卧时会压实无缓震，长期导致关节磨损83% similarUnverified大型犬（体重≥25kg）防跌垫需选高回弹且承压不塌陷材质，普通低密度海绵长期压迫会永久性凹陷失去缓冲，应选密度≥50kg/m³高弹棉或乳胶82% similarUnverified填充物区分记忆棉与PP棉：记忆棉支撑性好、抗塌陷，适合大型犬和老年宠物护关节；PP棉/羊羔绒蓬松柔软但3-6个月易结块塌陷，适合幼宠和轻体重猫80% similarUnverified泡沫/海绵内芯坡道虽轻便，但大型犬长期使用会压塌变形失去支撑，20kg以上犬只应选带内部支撑板或硬质材质结构80% similar
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