1、面里紙(zhi)種類、等(deng)級不同。有進口(kou)、國產牛皮紙(zhi)、仿(fang)牛皮紙(zhi)、瓦楞紙(zhi)、茶板紙(zhi)、高強度瓦楞紙(zhi)等(deng)，又分A、B、C、D、E、級。按紙(zhi)質(zhi)差用料，一般面紙(zhi)比(bi)里紙(zhi)要好些。

2、面(mian)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)首要(yao)(yao)技術參(can)數(shu)不(bu)(bu)同。從紙(zhi)(zhi)(zhi)(zhi)(zhi)箱(xiang)功(gong)用要(yao)(yao)求(qiu)或(huo)用戶從降低成本考慮，要(yao)(yao)求(qiu)紙(zhi)(zhi)(zhi)(zhi)(zhi)箱(xiang)的面(mian)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)有(you)別，通(tong)常是(shi)：面(mian)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)定(ding)量(liang)不(bu)(bu)同。有(you)面(mian)紙(zhi)(zhi)(zhi)(zhi)(zhi)比(bi)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)定(ding)量(liang)大的，也有(you)小(xiao)的。面(mian)紙(zhi)(zhi)(zhi)(zhi)(zhi)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)含(han)(han)水(shui)率(lv)不(bu)(bu)同。因供貨方、運(yun)輸(shu)庫存等環境濕度不(bu)(bu)同，有(you)面(mian)紙(zhi)(zhi)(zhi)(zhi)(zhi)比(bi)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)含(han)(han)水(shui)率(lv)大的，也有(you)小(xiao)的。面(mian)里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)定(ding)量(liang)、含(han)(han)水(shui)率(lv)都不(bu)(bu)同。一是(shi)面(mian)紙(zhi)(zhi)(zhi)(zhi)(zhi)定(ding)量(liang)大于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)，含(han)(han)水(shui)率(lv)大于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)或(huo)小(xiao)于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)。二是(shi)面(mian)紙(zhi)(zhi)(zhi)(zhi)(zhi)定(ding)量(liang)小(xiao)于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)，含(han)(han)水(shui)率(lv)大于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)或(huo)小(xiao)于里(li)(li)(li)(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)。

3、同批紙(zhi)(zhi)含(han)水(shui)率(lv)不同。一部分紙(zhi)(zhi)含(han)水(shui)率(lv)大于(yu)另一部分紙(zhi)(zhi)或(huo)筒紙(zhi)(zhi)兩頭(tou)間(jian)、外(wai)緣側與內;芯側含(han)水(shui)率(lv)不同。

4、紙經(jing)預(yu)熱器的(包角(jiao))受熱面長(chang)度(du)選擇和調(diao)節(jie)不妥或(包角(jiao))受熱而(er)長(chang)度(du)不能任(ren)意性，影響(xiang)了預(yu)熱烘干作用。

5、不能正確(que)運(yun)用蒸汽噴霧(wu)設(she)備或設(she)備上無噴霧(wu)設(she)備，因此不能任意增(zeng)加紙的濕度。

6、紙經預熱(re)后發出(chu)(chu)水分時間不足或環境濕度(du)大、通(tong)風(feng)差、出(chu)(chu)產線(xian)速度(du)不妥(tuo)。

7、單面瓦楞(leng)機、涂膠機的(de)上膠量(liang)不(bu)(bu)妥、不(bu)(bu)均而引入紙板(ban)縮短不(bu)(bu)均。