Unverified85% confidenceDecision RuleTime unknown
低龄有声书纸板厚度需≥2mm（灰板+覆膜），撕不烂但重量增加；1.5mm以下的薄纸板半年内易被啃咬起层、边角开裂
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Unverified拼块材质厚度2mm以下的纸质拼图易折角、易被啃咬变形，3岁以下建议选厚度≥4mm的加厚纸板或ABS塑料材质；木质拼块厚度8-10mm手感最佳且不易吞咽81% similarUnverified拼图纸板厚度≥2mm且带灰芯板的抗弯折，拼合后不翘边；1mm薄纸板反复拼装易起毛分层，寿命短80% similarUnverified粘毛器纸卷齿孔间距在3-5cm为佳，间距过大（＞6cm）撕纸时容易连撕多层浪费，过小（＜2cm）则单次粘毛后撕纸频繁78% similarUnverified纸质拼图选灰板厚度≥2mm（约1600g/㎡以上），薄于1.5mm的拼图反复拼插后易起层、卡扣松动导致拼合不牢78% similarUnverified拼块材质厚度决定耐用度：灰板纸厚度≥2mm不易折损，木质拼图厚度8-15mm适合低龄且更耐摔，普通纸板拼图厚度＜1.5mm反复拆装后卡口易松散77% similar
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