紙(zhi)(zhi)箱的厚(hou)度(du)、材(cai)(cai)質(zhi)(zhi)(zhi)是(shi)(shi)(shi)決定(ding)紙(zhi)(zhi)箱硬(ying)度(du)的兩(liang)個關鍵因(yin)素，常見的紙(zhi)(zhi)箱有三(san)層(ceng)(ceng)(ceng)(ceng)、五層(ceng)(ceng)(ceng)(ceng)紙(zhi)(zhi)箱，當然還有更(geng)厚(hou)的七層(ceng)(ceng)(ceng)(ceng)，紙(zhi)(zhi)箱層(ceng)(ceng)(ceng)(ceng)數越多越厚(hou)實(shi)，如下圖(tu)所示，三(san)層(ceng)(ceng)(ceng)(ceng)不是(shi)(shi)(shi)簡單(dan)三(san)層(ceng)(ceng)(ceng)(ceng)那(nei)個平(ping)板(ban)，而是(shi)(shi)(shi)兩(liang)層(ceng)(ceng)(ceng)(ceng)平(ping)板(ban)外夾(jia)中(zhong)間一層(ceng)(ceng)(ceng)(ceng)瓦楞(leng)，五層(ceng)(ceng)(ceng)(ceng)則為三(san)層(ceng)(ceng)(ceng)(ceng)平(ping)板(ban)加雙(shuang)瓦楞(leng);三(san)層(ceng)(ceng)(ceng)(ceng)、五層(ceng)(ceng)(ceng)(ceng)紙(zhi)(zhi)箱又(you)名(ming)單(dan)瓦楞(leng)和雙(shuang)瓦楞(leng)紙(zhi)(zhi)箱;紙(zhi)(zhi)箱材(cai)(cai)質(zhi)(zhi)(zhi)也有多種，好(hao)(hao)的材(cai)(cai)質(zhi)(zhi)(zhi)不但(dan)硬(ying)度(du)高(gao)(gao)，而且(qie)重量輕，差(cha)一些的材(cai)(cai)質(zhi)(zhi)(zhi)往往硬(ying)度(du)很低，很容易變形;市面上紙(zhi)(zhi)箱的材(cai)(cai)質(zhi)(zhi)(zhi)從高(gao)(gao)到底依(yi)次是(shi)(shi)(shi) “KK>KA>KB>AA>AB>BB", KK材(cai)(cai)質(zhi)(zhi)(zhi)是(shi)(shi)(shi)目前最好(hao)(hao)的材(cai)(cai)質(zhi)(zhi)(zhi)，三(san)層(ceng)(ceng)(ceng)(ceng)的厚(hou)度(du)就足夠承載一個正常成人年的重量，表面光滑有質(zhi)(zhi)(zhi)感，KK好(hao)(hao)是(shi)(shi)(shi)好(hao)(hao)，但(dan)是(shi)(shi)(shi)售價也是(shi)(shi)(shi)最貴的，AA，BB材(cai)(cai)質(zhi)(zhi)(zhi)雖(sui)硬(ying)度(du)稍弱，但(dan)是(shi)(shi)(shi)搭配(pei)五層(ceng)(ceng)(ceng)(ceng)的厚(hou)度(du)，也有很高(gao)(gao)的硬(ying)度(du)，足以保護好(hao)(hao)產品不受損壞。

　　紙箱(xiang)用戶(hu)根據自(zi)(zi)己的(de)(de)需要，選(xuan)擇(ze)不同類型的(de)(de)紙箱(xiang)，比如(ru)易(yi)碎、貴重物(wu)品可以使用五(wu)層(ceng)(ceng)AA紙箱(xiang)，普通經摔的(de)(de)物(wu)品，或者商品本(ben)身自(zi)(zi)帶紙盒的(de)(de)，選(xuan)擇(ze)三層(ceng)(ceng)的(de)(de)就足夠了。