Shanghai Daoqin Plastics Co., Ltd.

Color Difference is injection molding in Common defect,　因配 sleeve/set parts Color Difference formed injection molding machine formed waste 情况并不 small 见. Color Difference effect/influence factors more, and raw materials resin, masterbatch, masterbatch raw materials mixed combined, injection molding process , injection molding machine, mold and other, positive due to 牵涉面广泛, therefore Color Difference control technology meanwhile is injection molding in relatively difficult technology 之一. in production process in generally from below/following 六 方面 进行 Color Difference control.  

　　消 remove injection molding machine and mold factors effect/influence  

　　 need selection and injection molding product amount versus injection molding machine, false injection molding machine in material material and other 题目, most good more equipment. for/regarding mold system, gas and other formed Color Difference, can through versus separation mold repair solution. must solution good injection molding machine and mold 题目才 can production, decrease complex property.
 
　　消 remove raw materials resin, masterbatch effect/influence  

　　 control Raw Materials is solution Color Difference key/critical. therefore, especially is production shallow color products 时, can overlook raw materials resin heat stabilized property different for products light color belt/tape obvious effect/influence. large more injection molding production 厂家本身并不 production plastics material or masterbatch, this 样, can will 留意 焦点放 in production and Raw Materials upper. add strong/high Raw Materials 进库 检验; production in product can can using/adopting 同一厂家, grade material, masterbatch production; for/regarding masterbatch, in amount production front need 进行抽检试 color, need upper for, also need in in comparison, false color versus large, can is combined 格, batch masterbatch has micro Color Difference, can will masterbatch heavy new mixed combined rear again use, decrease/reduce masterbatch mixed combined 不均造 formed Color Difference. meanwhile, also focus/key point raw materials resin, masterbatch heat stabilized property, for/regarding heat stabilized property 不佳, 我们建议厂家进行调换.  

　　消 remove masterbatch material mixed combined effect/influence
 
　　 plastics material masterbatch mixed and good make product color 变化无常. will material and masterbatch machine mixed combined uniform rear, through lower material material 斗时, electrical function, masterbatch material separation 离, easy 吸附于 material 斗壁, this 势必造 formed injection molding cycle in masterbatch amount 改变, from generate Color Difference. for types can raw materials material rear again add 以人工搅拌 methods solution. in has very more company using/adopting material machine add masterbatch, this 样节省 a large amount of force, and is Color Difference control provide very large 帮助, less company use 不当, 结果往往 difficult 以令人 meet/satisfy. solid speed lower material machine add masterbatch how much 取决于塑化 time, 而塑化 time is 波动, has 时波动甚至 also comparison large, therefore need ensure add material amount, will material machine add material time add solid 定, setting time small most small time. in use material machine 时需留意, material machine export relatively small, use time rear, can can due to material machine screw in raw materials powder formed lower material 不准, 甚至造 formed material machine 停转, therefore 需定期清理.
 
　　 decrease/reduce material temperature degree for Color Difference effect/influence  

　　 production in 经常会碰 to certain add hot loss bad or is add hot control separation long formed material temperature degree 剧烈变化 from generate Color Difference. this category of causes generate Color Difference very light easy 判定, generally add hot loss bad generate Color Difference meanwhile 会伴随 塑化不均 phenomenon, add hot control separation long 烧常伴随 product gas 斑, heavy color 甚至焦化 phenomenon. therefore production in 需经常检查 add hot separation, add hot separation loss bad or 失控时 and more repair, decrease/reduce this category of Color Difference generate rate.  
　　 decrease/reduce injection molding process adjustment effect/influence  

　　 non Color Difference causes adjustment injection molding process parameters 时, can can 不改变 injection molding temperature degree, back pressure, injection molding cycle and masterbatch add amount, adjustment meanwhile also 需观察 process parameters for light color effect/influence, 如发现 Color Difference and adjustment. can can use high injection speed degree, high back pressure and other strong/high function injection molding process, anti local hot or hot separation understanding and other factors formed Color Difference. control material add hot temperature degree, especially is nozzle and nozzle add hot separation.  

　　 material temperature degree, masterbatch amount for product color effect/influence  

　　 in Color Difference adjustment front also must product color temperature degree, masterbatch amount trend. different masterbatch production temperature degree or masterbatch amount 改变, its product color 变化规律 is different. can through color process its 变化规律. remove non already this type of masterbatch color 变化规律, 否则不 can can very fast good Color Difference, especially is in using/adopting new masterbatch production color 时.