Unverified85% confidenceDecision RuleTime unknown
折纸用纸克重70-80g/m²最佳：太薄（<60g）折痕易破、成型软塌，太厚（>100g）幼儿手指压不出锐利折痕，导致挫败感
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Unverified折纸类套装选用60-80g/m²的薄纸更易折叠成型，克重超过120g/m²的卡纸只适合剪纸和立体拼贴，强行折叠会产生白色折痕并断裂77% similarUnverified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76% similarUnverified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76% similarUnverified包装纸克重建议在50-80g/m²：低于50g过薄易破且透底难包大件；高于80g偏硬折角处易开裂不适合包裹异形玩具，60g左右兼顾韧性与折叠性76% similarUnverified纸箱克重（g/m²）反映纸张厚度，五层箱面纸克重通常在150g以上，用手指按压箱面不易凹陷、瓦楞排列紧密的更耐压75% similar
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