1、模(mo)切起毛、起塵　　

問(wen)題原因：在模(mo)(mo)切(qie)(qie)時(shi)，經(jing)常會(hui)出現模(mo)(mo)切(qie)(qie)產(chan)品切(qie)(qie)邊(bian)不光潔、起毛的現象(xiang)，特別(bie)是離(li)壓(ya)痕線較近(jin)的一些(xie)切(qie)(qie)邊(bian)處情(qing)況更(geng)為(wei)嚴(yan)重。這是由于在模(mo)(mo)切(qie)(qie)合(he)壓(ya)時(shi)，模(mo)(mo)切(qie)(qie)版上的膠(jiao)條、壓(ya)痕鋼線對紙張(zhang)(zhang)產(chan)生(sheng)了拉力(li)，紙張(zhang)(zhang)在未被完全切(qie)(qie)穿時(shi)就被產(chan)生(sheng)的拉力(li)拉斷，出現了毛邊(bian)。　　

解決方法：

首(shou)先要(yao)根據紙(zhi)張(zhang)選用(yong)不同(tong)類型(xing)的(de)(de)模(mo)(mo)切(qie)刀(dao)(dao)。模(mo)(mo)切(qie)刀(dao)(dao)包括(kuo)直紋(wen)(wen)刀(dao)(dao)和(he)橫(heng)紋(wen)(wen)刀(dao)(dao)，兩種紋(wen)(wen)路的(de)(de)刀(dao)(dao)鋒(feng)(feng)又有高(gao)矮(ai)之分，刀(dao)(dao)鋒(feng)(feng)形成(cheng)的(de)(de)紋(wen)(wen)路和(he)高(gao)矮(ai)不同(tong)，直接(jie)關(guan)系到模(mo)(mo)切(qie)質量(liang)和(he)模(mo)(mo)切(qie)刀(dao)(dao)的(de)(de)使用(yong)壽命(ming)。在避(bi)免模(mo)(mo)切(qie)起毛方面，直紋(wen)(wen)刀(dao)(dao)比橫(heng)紋(wen)(wen)刀(dao)(dao)好(hao)；在使用(yong)壽命(ming)方面，矮(ai)鋒(feng)(feng)刀(dao)(dao)比高(gao)鋒(feng)(feng)刀(dao)(dao)好(hao)。在模(mo)(mo)切(qie)覆膜(mo)卡紙(zhi)時(shi)(shi)，應選用(yong)直紋(wen)(wen)高(gao)鋒(feng)(feng)刀(dao)(dao)，且要(yao)求刀(dao)(dao)鋒(feng)(feng)是磨制的(de)(de)，最(zui)好(hao)不要(yao)采(cai)用(yong)壓凹(ao)凸一次成(cheng)型(xing)工(gong)藝，否(fou)則壓力太大會對模(mo)(mo)切(qie)產生(sheng)很大影響(xiang)；而(er)在加工(gong)普通(tong)卡紙(zhi)時(shi)(shi)宜(yi)選用(yong)矮(ai)鋒(feng)(feng)刀(dao)(dao)，并(bing)根據紙(zhi)張(zhang)纖維的(de)(de)質量(liang)來(lai)確定刀(dao)(dao)鋒(feng)(feng)的(de)(de)紋(wen)(wen)路。

2、模切機壓(ya)(ya)痕(hen)(hen)產(chan)生“爆線(xian)(xian)(xian)”和“暗線(xian)(xian)(xian)”　　問題(ti)原因(yin)：“爆線(xian)(xian)(xian)”是(shi)指(zhi)由(you)于模切壓(ya)(ya)痕(hen)(hen)的(de)壓(ya)(ya)力(li)過大，超過了紙張(zhang)纖維(wei)的(de)承受極限，使(shi)紙張(zhang)纖維(wei)斷裂(lie)或(huo)部分斷裂(lie)；“暗線(xian)(xian)(xian)”是(shi)指(zhi)不(bu)(bu)應有的(de)壓(ya)(ya)痕(hen)(hen)線(xian)(xian)(xian)，一(yi)般是(shi)由(you)于模切版和壓(ya)(ya)痕(hen)(hen)鋼(gang)線(xian)(xian)(xian)選擇不(bu)(bu)合適(shi)、模切壓(ya)(ya)力(li)調節不(bu)(bu)當、紙張(zhang)質量(liang)差、紙張(zhang)纖維(wei)方(fang)向(xiang)與模切版排刀(dao)方(fang)向(xiang)不(bu)(bu)一(yi)致、紙張(zhang)含水量(liang)低導致柔韌性下降等原因(yin)所(suo)引起的(de)。　

解決方(fang)法：選擇(ze)合適的(de)(de)(de)(de)(de)模切(qie)版(ban)；適當調節模切(qie)壓力；在(zai)模切(qie)之前先把(ba)待模切(qie)的(de)(de)(de)(de)(de)印刷(shua)品在(zai)車間里(li)放置(zhi)一段(duan)時間；提高車間環境(jing)的(de)(de)(de)(de)(de)相對濕度。較好(hao)的(de)(de)(de)(de)(de)方(fang)法是(shi)降(jiang)低(di)(di)壓痕鋼線的(de)(de)(de)(de)(de)高度，降(jiang)低(di)(di)的(de)(de)(de)(de)(de)高度通常(chang)為0.1～0.2mm，具體(ti)要根據紙張(zhang)定量確定，定量在(zai)350g/m2以(yi)上(shang)的(de)(de)(de)(de)(de)紙張(zhang)需降(jiang)低(di)(di)的(de)(de)(de)(de)(de)壓痕鋼線的(de)(de)(de)(de)(de)高度為0.2mm，定量在(zai)350g/m2以(yi)下的(de)(de)(de)(de)(de)紙張(zhang)宜降(jiang)低(di)(di)0.1mm。

1, cutting fluff, dust from　　

Cause of the problem: when in the cutting, trimming cutting products often do not appear smooth, raising phenomenon, especially away from the crease line at the cutting edge closer to some of the more serious. This is due to meet the pressure in the mold, the die on the tape, steel wire indentation produced tension on the paper, the paper has not been completely cut through the tension generated when it was pulled off, the emergence of flash.　　Solution: First, we must choose different types of paper cutting knife. Straight knife cutting knives, including knives and stripes, two lines of the height of the blade there are points, lines and the formation of the blade height difference is directly related to the cutting quality and cutting tool life. Avoid cutting the fluff side, straight blade knife better than stripes; in service life, high and low front front knife a good knife. Coated paperboard in the die, the knife should be used Ruled Gao Feng, and asked the blade is polished, it is best not to use embossing a molding process, or cutting too much pressure will have a significant impact; in the processing should use short when ordinary cardboard front knife, based on the quality of the paper fibers to determine the blade's lines.　　

2, die-cutting machine creasing a "critical line" and "dark line"　　

Cause of the problem: "burst line" refers to cutting indentation pressure, exceeding the tolerance limits of the paper fibers, so that part of the paper fiber breakage or fracture; "dark line" refers to the undue indentation line, usually As the die and the indentation steel wire selection is inappropriate, improper cutting pressure regulation, poor quality paper, paper fiber direction and die-cutting direction inconsistent row, due to the low water content of paper decreased flexibility caused by other reasons.　　

Solution: Choose the appropriate die; proper cutting pressure adjustment; in the cutting die before the first print to be placed in the workshop for some time; increase the relative humidity of the workshop environment. A better approach is to reduce the height of indentation steel wire, reducing the height is usually 0.1 ~ 0.2mm, the specific quantitative determination according to the paper, quantitative in 350g/m2 paper to be lower than the indentation height of 0.2mm steel wire quantitative in the following paper 350g/m2 should reduce 0.1mm.