1、HOW TO OBTAIN PREFORM QUALITY: CAUSES如何保证瓶坯质量：原因Code 编码 Causes 原因C1 Incorrect lip closure due to mechanical defect or damage由于机械错误或损坏导致模唇关闭错误C1b Incorrect lip support bar closure with core support plate模唇支撑杆及模芯支撑板的错误关闭C1c Incorrect coupling between lip and core support模唇与模芯支撑的错误连接C2 Mold temperature
2、 too high模具温度过高C3 Insufficient injector charge注射器装料不足C4 Flexing of injection core due to too high values of PET pressure or PET injection speed由于 PET 压力过高或者 PET 注射速度过快导致模芯弯曲C5 Injection too slow注射过慢C6 Injection too fast and holding time incorrect注射过快及保压时间错误C7 Insufficient air escape in the lips模唇内气体
3、排出不畅C8 Degraded materiall降解原料C9 Presence of foreign material in the resin树脂中混有异物C10 Badly compacted material严重压实的原料C11 Badly dried material过度干燥的原料C12 High speed of extruder screw挤压机螺杆过速C13 Needle valve movement slowed due to dirt or oil in the supply air line由于气路中有油或杂质导致针阀运动过慢C14 Needle valve moveme
4、nt with working pressure lower 6.5 8 bar针阀运动工作气压低于 6.58barC15 Incorrect melt temperature错误的熔料温度C16 Preform not inserted correctly on conveyor belt瓶坯没有正确地插到钢带上C17 Water in melt during injection stage在注射阶段熔料含水C18 Extruder loop pressure too high挤压机压力曲线过高C19 Insufficient injector pressure注射压力不足C20 Incor
5、rect closing pressure in injection press注塑模关闭压力不正确C21 Injection pressure/speed too high注射压力及速度过高C22 Poor quality of PETPET 品质不好C23 Residual material of the previous perform前一个瓶坯剩余残料C24 Delay in fusion of the PET chips in the extruder挤压机中的 PET 粒子熔化延迟C25 Excess temperature in the hot channels热通道温度过高C2
6、6 Irregular wall thickness (eccentricity max 15 hundredths)壁厚不匀（偏心最大 15%）C27 Melt temperature too high熔料温度过高C28 Melting set point temperature too low熔化设定温度过低C29 Preform temperature too high瓶坯温度过高C29b Preform temperature too low瓶坯温度过低C30 Incorrect nozzle temperature注嘴温度错误C31 Incorrect cycle time循环时间错
7、误C32 Mold movement cycle time too long模具运动循环时间过长C32b Mold movement cycle time too short模具运动循环时间过短C33 Injection and holding time too short注射及保压时间过短C33b Injection and holding time too long注射及保压时间过长C34 Cooling time too short冷却时间过短C35 Incorrect mold opening delay time模具打开延迟时间错误C36 Injection speed too hi
8、gh注射速度过快C37 Water temperature too low水温过低C38 Incorrect hot manifold decompression热流道泄压错误C39 Mechanical defects or damages in the injection mold注塑模机械故障或损坏C40 Incorrect preform temperature瓶坯温度不对C41 Preform not expelled瓶坯未排C42 Hot manifold temperature too high热流道温度过高C43 Insufficient service air pressur
9、e服务空气压力不足C44 Cavity badly positioned模腔位置错误C45 Core badly cooled模芯冷却不好C46 Incorrect transfer device movement传送装置运动错误C47 Preform badly inserted in the collet瓶坯没有很好的插到辊环上C48 Presence of water (humidity) in the cavities or in the lip support bar模腔或模唇支撑杆上有水（湿度）C49 Incorrect cavity temperature模腔温度错误C50 Incorrect core temperature模芯温度错误C51 Roughness of the injection core模芯粗糙Cxx = Cause n xx
