Shanghai Daoqin Plastics Co., Ltd.

plastics container surface printing fault/failure troubleshooting fault/failure formed and countermeasures sleeve/set color 不准(1)印版 安装位置不 for, color full has sleeve/set upper. heavy new upper 版. (2) in made as or 原版时印版 local deformation, color separation sleeve/set upper. heavy new made as or 原版. (3) although is 整 图案未 sleeve/set upper, performance has separation sleeve/set upper. heavy new 安装印版图案 deformation (” printing 圆锥形 plastics container 时, due to large 径侧圆周 direction long, small 径侧圆周 direction shrink short, shrink amount and formed ratio/proportion, 导致图案呈圆周 direction long or shrink short. is make printing positive 确, in made as 版式时, shrink small large 径侧, long small 径侧. (2) printing 圆柱形 plastics container 时, in direction long deformation. this main/primary is due to 印版滚筒 or 橡皮滚筒组装不当. usually container thick degree type outer 径橡皮滚筒 outer and 印版滚筒 outer 径, separation and gears 节圆直径 versus 一致, in 此基础 upper, again will 橡皮滚筒 use 橡皮布垫 thick 0.05mm left right, this is is increase printing pressure. (3)橡皮布剥落松弛, generate local full color 偏移. heavy new 安装橡皮布图案层次 again property 差(” made as 印版时线 strip/profile coarse and 网点太 large, 导致图案 线 strip/profile and 网点变 coarse. heavy new made as 印版, and 版式. (2) ink viscosity low. 应适当 adjustment ink viscosity. (3) printing pressure large. 应适当调 small. (4)橡皮布膨 lubricating. use new 橡皮布. (5) and 轴平行 横线太 coarse, separation 醒目. 应检修 gears and other machine 械松动. 但旋转式 printing machine tool has coarse defect, relatively difficult ensure coarse fine degree. (6)印版滚筒 and 墨辊筒 and 橡皮滚筒 接触太紧, 导致线 strip/profile and 网点周转出现 black spots. 应适当 adjustment pressure. (7)橡皮布衬垫太 soft. use relatively hard 橡皮布衬垫. (8)原版 网屏角 degree 不当, types above color sleeve/set 印时, 网点处出龟纹. heavy new made as 原版. value attention/notes is, using/adopting printing material as is made 版时, easy generate this type of fault/failure, amount 避免. (9) printing machine make water degree by bad, 导致印版滚筒 or 橡皮滚筒 推 force bearings 窜动, generate heavy 影. heavy new and adjustment printing machine. (10)当印 made toward has long short color block 邻接 图案 or color block has 空白 图案时, generate local heavy 影. this main/primary is due to has 匀墨辊 and coarse fine 一致造 formed. usually 每根匀墨辊 and coarse fine meanwhile, can anti generate color block heavy 叠. use transparent ink 时, make generate local heavy very difficult 看 出 ink defect (1) ink viscosity 不当, ink from 墨斗经匀墨辊, and 橡皮布至 products surface 时, method very good 转移. therefore, ink 首先应搅拌 uniform. can add amount dilute agent make its soft/flexible. adjustment ink viscosity 时, 应掌握 below/following 原则: is from 墨斗至 to 墨辊, make ink value small, 无触变 property. 谓屈服 value, is ink rear 立即变 soft property 质, 而触变 property is ink 搅拌变 soft, rear also upper hard property 质; is from 匀墨辊至 墨辊, make ink viscosity relatively low; is from 墨辊经印版至橡皮布, value relatively small, viscosity relatively high ink use 方便; is from 橡皮布至 products surface, value large, has property ink for printing has 利. according to above 原则, in made ink attention/notes versus balanced. (2) ink in resin solid in ink and 橡皮布 surface, make its 不沾墨, ink defect. remove solid in and 橡皮布 surface resin. (3)先印 ink surface 于致密, rear ink can very good printing to ink surface upper. this main/primary is due to ink add hot drying degree or ink property defect formed. therefore, ink add hot drying must degree, ink if gloss very strong/high, 应试印 rear again amount use ink viscous 附不牢(1)橡皮布 surface or loss 伤, printing surface generate local ink or 剥落. 应垫平橡皮布 or use new 布. (2) type 芯偏心 or lower. 应检修 type 芯. (3)印版凹 lower or loss 伤. 应检查印版, for/regarding micro small loss can use ring oxygen type bonding agent 进行修补. (4) printing pressure non-uniform. heavy new adjustment. (5)承印 container thick thin non-uniform. remove combined container. (6)承印 container surface treatment defect. adjustment gas and electrical electrical pressure. (7)承印 container surface viscous has ink property material 质. 应清洗 container surface 油污, remove 污染源, gas in dispersion lubricated 油 飞沫, container use has silicon sliding agent and wax and other. (8) printing machine and gears scratch generate impact, make printing material surface generate strip/profile 纹状墨痕. more parts, remove 振动. (9) ink 变质. more ink. in ink 时, anti mixed gas in and wet gas 而引起 ink ink drying defect (1) drying temperature degree low, ink drying rear still viscous. 应适当 improve/increase drying temperature degree. use made as outer add hot device 时, 应设置指示灯 and temperature degree 计, relatively difficult add hot temperature degree high low. (2) for solvent agent drying type ink, surface drying ink inner still has 未挥发尽 solvent agent, 并逐步渗出 surface, make printing drying rear in container surface 沾脏, heavy 时, will several container bonding to 一起. for 此, using/adopting gas versus color method 测定残留 solvent agent amount or will several container long time pressure heavy 叠放, 进行结 block testing, 以确定操 as conditions, 并采取 cooling measures, will container cooling to 30℃ below/following again 堆放, is container in 40℃ above 堆放时, make has solvent agent, ink in can separation active 动, 也会转移 to container surface