圓刀(dao)機與平刀(dao)機的比較
無論是(shi)單張(zhang)紙還是(shi)卷筒紙印刷方式,如果(guo)配備(bei)了平刀機(ji),其后加工(gong)在工(gong)藝(yi)(yi)性上就會(hui)存在一些缺陷。因此,模切工(gong)藝(yi)(yi)的(de)選擇成(cheng)為紙盒加工(gong)中第二(er)重(zhong)要(yao)的(de)決定因素。
盡管現(xian)在圓(yuan)(yuan)刀(dao)(dao)機的價格仍比平刀(dao)(dao)機模(mo)具(ju)高(gao)(gao),但圓(yuan)(yuan)刀(dao)(dao)機模(mo)具(ju)價格的逐(zhu)步降低(di)(di)及其可靠性(xing)的逐(zhu)步提高(gao)(gao),使其普及范圍(wei)不斷擴大。到目(mu)前(qian)為止,越(yue)來越(yue)多的紙盒(he)加(jia)工商已(yi)經認(ren)識到圓(yuan)(yuan)刀(dao)(dao)機加(jia)工方式的優越(yue)性(xing),主要體現(xian)在對較(jiao)(jiao)高(gao)(gao)的平均加(jia)工速度、加(jia)工工藝的相(xiang)似(si)一致性(xing)(輪轉印(yin)刷+圓(yuan)(yuan)壓圓(yuan)(yuan)模(mo)切)、較(jiao)(jiao)低(di)(di)的投資及簡單(dan)、快捷的準備的認(ren)可上(shang)。
在(zai)設備(bei)(bei)投(tou)資方(fang)面(mian),一(yi)(yi)臺(tai)平(ping)壓(ya)平(ping)模(mo)(mo)切機(ji)的(de)價格足以(yi)(yi)購買多臺(tai)圓(yuan)刀機(ji)。盡管圓(yuan)刀機(ji)的(de)價格稍高,但其投(tou)資是可以(yi)(yi)推遲(chi)的(de),只(zhi)有(you)在(zai)實(shi)際接到特殊紙盒(he)加(jia)工訂單時,才(cai)需要購買模(mo)(mo)具。再(zai)進一(yi)(yi)步講,現代圓(yuan)壓(ya)圓(yuan)模(mo)(mo)切版(ban)已(yi)被制造得非常精(jing)確(que),以(yi)(yi)至于絕大部分印前(qian)準備(bei)(bei)工作(zuo)都(dou)在(zai)模(mo)(mo)具加(jia)工廠里完(wan)成(cheng),模(mo)(mo)切版(ban)的(de)墊(dian)版(ban)、挖空、貼壓(ya)痕(hen)墊(dian)條等準備(bei)(bei)工作(zuo)在(zai)印刷企業都(dou)已(yi)不復存在(zai),印刷企業只(zhi)需用一(yi)(yi)片薄(bo)薄(bo)的(de)雙(shuang)面(mian)膠進行粘版(ban)就足夠了,實(shi)際上也降低了成(cheng)本。
當然,所有因(yin)素(su)中(zhong)最重要(yao)的(de)仍(reng)然是(shi)生產(chan)效率。與聯動平(ping)(ping)壓(ya)平(ping)(ping)模切(qie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)相(xiang)比(bi),圓(yuan)壓(ya)圓(yuan)模切(qie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)的(de)生產(chan)效率要(yao)高(gao)得多。在成功(gong)采用了減少裁切(qie)空白等新方法后,紙盒加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)生產(chan)的(de)成功(gong)要(yao)素(su)就是(shi)單位(wei)時間內的(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)數量,即如何提(ti)高(gao)生產(chan)效率。平(ping)(ping)刀機(ji)與卷筒紙印刷工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)的(de)組合(he)雖(sui)然也(ye)具有較高(gao)的(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)速度(du),但較高(gao)的(de)設備維護費、模切(qie)排(pai)廢的(de)困難和套(tao)準的(de)難度(du),使得實際加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)生產(chan)能力比(bi)不上圓(yuan)壓(ya)圓(yuan)模切(qie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)。
當然,圓(yuan)(yuan)壓(ya)圓(yuan)(yuan)模切(qie)也(ye)不(bu)是萬能的。大幅(fu)面(mian)印(yin)刷(shua)的小紙盒(he)加工生產采用平壓(ya)平模切(qie)工藝仍然具(ju)有優勢,在(zai)某些方面(mian)甚至超過窄(zhai)幅(fu)輪轉+圓(yuan)(yuan)壓(ya)圓(yuan)(yuan)模切(qie)工藝的加工能力。