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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(fen)類(lei):常見(jian)問答 時(shi)間:2020-04-26 10:10:29

原紙(zhi)(zhi)材料特性的(de)(de)不(bu)(bu)同, 對紙(zhi)(zhi)箱(xiang)生產線的(de)(de)生產效率和質量的(de)(de)影響, 在日常(chang)工藝(yi)中也比較突出,如(ru)瓦(wa)楞(leng)(leng)生產線配(pei)紙(zhi)(zhi)不(bu)(bu)合理,容(rong)易造成瓦(wa)楞(leng)(leng)紙(zhi)(zhi)板卷曲強度下降:瓦(wa)楞(leng)(leng)層原紙(zhi)(zhi)質量不(bu)(bu)好(hao),則影響紙(zhi)(zhi)箱(xiang)的(de)(de)抗壓強度較硬、不(bu)(bu)平整的(de)(de)面紙(zhi)(zhi)、瓦(wa)楞(leng)(leng)紙(zhi)(zhi)板裱貼后容(rong)易出現(xian)脫(tuo)膠、起泡(pao)等質量問(wen)題,裱貼消耗將明顯增(zeng)加。

一般瓦(wa)楞(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)是(shi)由(you)箱板(ban)(ban)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)瓦(wa)楞(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)粘合組成(cheng)的(de), 如果瓦(wa)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)里(li)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)之間的(de)含水(shui)(shui)(shui)率懸(xuan)殊(shu)過大,那(nei)么(me),原紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)在吸(xi)收粘合劑和(he)加熱以(yi)(yi)后(hou),紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)伸縮(suo)變化(hua)將會有明顯差異(yi),這就容(rong)易造成(cheng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)卷曲, 使紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)箱的(de)強度下降。所以(yi)(yi),合理(li)配(pei)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)十(shi)分(fen)重要,原紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)上機(ji)前應對含水(shui)(shui)(shui)率進行檢(jian)測,將含水(shui)(shui)(shui)率相對比較接近(jin)的(de)箱板(ban)(ban)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)和(he)瓦(wa)楞(leng)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)進行配(pei)套生產, 以(yi)(yi)防止和(he)減少紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)板(ban)(ban)出(chu)現卷曲。

瓦(wa)(wa)(wa)楞層原紙(zhi)(zhi)(zhi)(zhi)的(de)(de)(de)質量如何,對(dui)紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)的(de)(de)(de)整體抗(kang)壓(ya)強度(du)的(de)(de)(de)影響(xiang), 比里紙(zhi)(zhi)(zhi)(zhi)、面(mian)紙(zhi)(zhi)(zhi)(zhi)對(dui)紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)抗(kang)壓(ya)強度(du)的(de)(de)(de)影響(xiang)更大,所以, 選擇環壓(ya)指數高(gao)的(de)(de)(de)瓦(wa)(wa)(wa)楞紙(zhi)(zhi)(zhi)(zhi)或箱(xiang)(xiang)板(ban)紙(zhi)(zhi)(zhi)(zhi)作(zuo)為瓦(wa)(wa)(wa)楞層的(de)(de)(de)用(yong)紙(zhi)(zhi)(zhi)(zhi),是生產工藝(yi)控制值得重視(shi)的(de)(de)(de)問題(ti)。對(dui)長(chang)途運輸、、易爆商(shang)品的(de)(de)(de)外(wai)包裝(zhuang)紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang),更好用(yong)高(gao)強度(du)瓦(wa)(wa)(wa)楞紙(zhi)(zhi)(zhi)(zhi)或箱(xiang)(xiang)板(ban)紙(zhi)(zhi)(zhi)(zhi)作(zuo)為瓦(wa)(wa)(wa)楞用(yong)紙(zhi)(zhi)(zhi)(zhi), 這樣可大大提高(gao)紙(zhi)(zhi)(zhi)(zhi)箱(xiang)(xiang)的(de)(de)(de)抗(kang)壓(ya)強度(du),較好地保護(hu)商(shang)品。此(ci)外(wai), 對(dui)預印面(mian)紙(zhi)(zhi)(zhi)(zhi)裱貼(tie)時(shi), 當(dang)面(mian)紙(zhi)(zhi)(zhi)(zhi)較硬、平整度(du)又不好時(shi),若安排在手工操(cao)作(zuo)的(de)(de)(de)貼(tie)面(mian)機上進行裱貼(tie),就容易出現起(qi)泡和(he)脫膠質量問題(ti)。

根據以往(wang)生產的實(shi)踐經(jing)驗, 將壓(ya)光的面紙安排在自動覆面機上進行裱貼比較合適, 因為(wei)這種(zhong)機器有加壓(ya)裝置有利于保證(zheng)裱貼的平整和(he)牢固(gu),可(ke)較好地保證(zheng)紙板的加工(gong)質量。

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