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如何根據原紙的特性合理安排瓦楞紙板加工工藝?

分類:常見問(wen)答 時間:2020-04-26 10:10:29

原(yuan)紙材料特性的(de)(de)不同, 對紙箱生(sheng)產線(xian)的(de)(de)生(sheng)產效率和質(zhi)量的(de)(de)影(ying)響, 在日常工藝(yi)中也比較(jiao)突出,如瓦楞生(sheng)產線(xian)配紙不合理,容(rong)易(yi)造(zao)成瓦楞紙板(ban)卷曲強度(du)下降:瓦楞層(ceng)原(yuan)紙質(zhi)量不好(hao),則影(ying)響紙箱的(de)(de)抗壓強度(du)較(jiao)硬、不平整的(de)(de)面紙、瓦楞紙板(ban)裱貼后容(rong)易(yi)出現脫膠、起泡(pao)等質(zhi)量問題,裱貼消(xiao)耗將明顯增加。

一(yi)般瓦(wa)楞(leng)(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)是由箱板(ban)(ban)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和瓦(wa)楞(leng)(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)粘合(he)組成(cheng)的, 如(ru)果(guo)瓦(wa)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和里紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)之(zhi)間(jian)的含(han)水率懸殊過大,那么,原紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)在吸收粘合(he)劑(ji)和加(jia)熱以(yi)后,紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的伸縮(suo)變化將(jiang)會有明顯差異,這就(jiu)容易(yi)造(zao)成(cheng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)卷(juan)曲, 使(shi)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)箱的強度下降(jiang)。所以(yi),合(he)理配(pei)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)十分重(zhong)要,原紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)上(shang)機前應對含(han)水率進(jin)行檢測,將(jiang)含(han)水率相(xiang)對比較接(jie)近的箱板(ban)(ban)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和瓦(wa)楞(leng)(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)進(jin)行配(pei)套生產, 以(yi)防止和減(jian)少紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)出(chu)現卷(juan)曲。

瓦楞(leng)層原紙(zhi)(zhi)(zhi)(zhi)的(de)質(zhi)(zhi)量如何,對紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)的(de)整(zheng)體抗壓(ya)強(qiang)度(du)(du)(du)的(de)影響, 比里紙(zhi)(zhi)(zhi)(zhi)、面紙(zhi)(zhi)(zhi)(zhi)對紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)抗壓(ya)強(qiang)度(du)(du)(du)的(de)影響更大(da),所以, 選擇環(huan)壓(ya)指數高的(de)瓦楞(leng)紙(zhi)(zhi)(zhi)(zhi)或(huo)箱(xiang)(xiang)板紙(zhi)(zhi)(zhi)(zhi)作為瓦楞(leng)層的(de)用紙(zhi)(zhi)(zhi)(zhi),是生產工藝(yi)控制值得重(zhong)視的(de)問題。對長途(tu)運(yun)輸、、易(yi)爆商品(pin)的(de)外(wai)包裝紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang),更好(hao)用高強(qiang)度(du)(du)(du)瓦楞(leng)紙(zhi)(zhi)(zhi)(zhi)或(huo)箱(xiang)(xiang)板紙(zhi)(zhi)(zhi)(zhi)作為瓦楞(leng)用紙(zhi)(zhi)(zhi)(zhi), 這(zhe)樣可大(da)大(da)提高紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)的(de)抗壓(ya)強(qiang)度(du)(du)(du),較好(hao)地(di)保護(hu)商品(pin)。此外(wai), 對預(yu)印面紙(zhi)(zhi)(zhi)(zhi)裱貼(tie)時(shi), 當面紙(zhi)(zhi)(zhi)(zhi)較硬、平整(zheng)度(du)(du)(du)又不(bu)好(hao)時(shi),若安排在手工操作的(de)貼(tie)面機上進行(xing)裱貼(tie),就容易(yi)出現起泡和脫膠質(zhi)(zhi)量問題。

根據以往生產(chan)的(de)實(shi)踐經驗, 將壓光的(de)面(mian)紙安(an)排在(zai)自動覆面(mian)機(ji)上進(jin)行(xing)裱貼(tie)比(bi)較合(he)適, 因為這(zhe)種機(ji)器有加壓裝置有利于保證裱貼(tie)的(de)平整(zheng)和牢(lao)固,可較好地(di)保證紙板的(de)加工(gong)質量。

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