代号“PAP20、PAP21、PAP22”分别代表什么纸？ - 百度知道
04 July 2025 admin
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PAP是 可回收 的硬纸板的意思。 PAP20=corrugated fibreboard 瓦楞纸板。 PAP21=non-corrugated fibreboard。 PAP22=paper。 通常由各种 植物纤维 为原料，也有掺加非植物纤维，在纸板机上抄造制成。有些特种纸板也掺用羊毛等动物纤维或 石棉 等矿物纤维。 纸板与纸张区别 一般我们称谓的纸，从广义上讲，是包含着 ...
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