Unverified72% confidenceTradeoffTime unknown
磁性钢板板面比树脂板贵约50%且更重，但树脂板不吸磁、耐用性差，若只用于粉笔式记事而不需磁贴，树脂板足够
1
Sources
72%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified磁吸力强弱取决于面板背后的整块冷轧钢板厚度：优质款钢板≥0.3mm能吸住A4纸+3块磁贴叠加；铝合金或塑料背板款几乎无磁性，只能靠弱磁贴纸勉强吸单张薄纸79% similarUnverified覆膜纸板+软磁片材质，比普通贴纸书耐撕扯、可反复粘贴，但软磁片边角长期使用后可能出现起翘或磁性减弱，不如硬磁片款耐久78% similarUnverified采用硬质磁板材质，比普通磁力贴纸更耐撕扯和反复粘贴，适合低龄段孩子反复玩耍78% similarUnverified磁性白板需选钢板基材（非纯树脂涂层），钢板厚度≥0.3mm才能牢固吸住A4纸+磁贴，判断方法是看产品是否标注'钢制烤漆板面'而非'PP膜'77% similarUnverified带磁性的黑板贴通常是铁质基材+涂层，整体厚度约0.4-0.8mm且较重，需要更强背胶或另配挂钉，普通PVC黑板贴不具备吸磁功能77% similar
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