Unverified80% confidenceDecision RuleTime unknown
卡片厚度≥300g铜版纸或PVC覆膜，圆角R≥5mm，边缘无毛刺，才能承受幼儿反复抓咬撕扯；薄于250g的普通卡纸2周内易起毛卷边
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified3岁以下幼儿使用的卡片圆角半径应≥5mm且卡片厚度≥1.5mm（约350g铜版纸覆膜或PVC材质），防止边角划伤口腔且不易被撕咬变形90% similarUnverified低幼卡片圆角半径应≥5mm且厚度≥1.5mm（350g以上白卡纸），太薄易被撕咬折损，圆角不足会划伤幼儿87% similarUnverified卡片材质厚度需≥300g铜版纸或PVC覆膜，圆角半径≥3mm，边缘无毛刺，可入口啃咬阶段（2-3岁）优先选PP材质防撕咬防水可擦洗87% similarUnverified卡片尺寸应≥9×9cm，太小的卡片老人手部抓握困难，圆角设计可避免边缘划伤，300g以上铜版纸或PVC覆膜材质能承受反复擦拭和唾液沾染87% similarUnverified卡片圆角处理+厚度≥1mm（约300g/㎡以上白卡纸或PP塑料）适合1岁内可自主抓握阶段，防止划伤和撕咬吞咽风险；撕不烂布书材质更适合口欲期反复啃咬86% similar
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