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Date: 2019-11-25 03:40 Views: 3268 Source: Internet

defect	causes	troubleshooting methods
pp> bottle 胚底部发白	１. hot runner temperature degree 不足２． material temperature 不足	１． add strong/high thermal insulation measures ２．调 high hot temperature degree ３．适当 improve/increase material temperature ４． add fast speed ５． reduce holding pressure ６． decrease slow cooling water speed
pp> bottle 胚不 transparent	１． raw materials drying 不足２． raw materials 塑化不足３．pp> bottle 胚壁 thick large or 　　 cooling 不足４． mixed its it plastics ５． material temperature low	１ ensure drying small above ２． rise high material temperature ３． improve/increase screw speed ４．检查 is drying material temperature small or injection amount versus 配, must ensure raw materials in １６５ degree drying water separation content less 于０.０２% ５． add strong/high cooling, thin thick
pp> bottle 胚由 transparent transparent	脱 film temperature degree high	１． add strong/high cooling water ２．延 long cooling time ３．改变 injection time
pp> bottle 胚一侧 has 雾影	１． holding pressure high ２．底 film gate 孔偏心	１． decrease low pressure ２．修 positive mold
pp> bottle 胚 has or 发黄	plastics separation understanding	１． reduce drying temperature degree, long drying time ２． adjustment injection speed degree ３． reduce material temperature ４． reduce hot temperature degree
pp> bottle 胚 has bubbles	drying 不足	１． add strong/high drying ２． increase material temperature ３． reduce screw speed
bottle inner has 不规则 ring 槽	water cold in type type 腔	１． add strong/high workshop drying 　　２． improve/increase cooling water temperature ３． scratch dry mold
pp> bottle 胚 in gate 部拉裂	１． hot runner and gate 　　 different 心２． gate 倒扣３． gate hot	１．修 positive mold 　２．修 positive gate ３．延 long cooling time ４, increase speed or injection time 　５． add strong/high gate thermal insulation
bottle 胚口未满注 or has solvent 接纹	１．排 gas defect ２． injection 偏心	１． add large gas 　２．清洗唇模３． decrease low speed 　４．修 positive mold gate 孔
pp> bottle 胚边 thick 边溥	１． mold manufacturing defect ２． gate 孔偏位３． injection pressure high ４． type 芯移位	１．修 positive mold ２． improve/increase material temperature ３．调 low pressure ４． using/adopting high strength high degree and type can adjustment structure mold
bottle surface 凹陷	１． material temperature high ２．注 speed short ３． holding pressure short ４． injection time short ５． cooling 不足	１． reduce material temperature ２． reduce speed ３． increase holding pressure ４． increase injection time ５． increase water pressure
bottle gate wire drawing	１． thermal insulation defect ２． cooling 不足３． hot inner has pressure ４． screw defect ５． holding pressure low	１． ensure gate thermal insulation ２． add large cooling ３． add strong/high 倒索４．清理 screw 咀５． increase holding pressure
bottle film rear bending	１． gate 孔偏心２． cooling non-uniform	１．修 positive mold 　２． reduce holding pressure ３． increase speed 　４．延 long cooling ５．清理 water 道　６． add large cooling water pressure water amount
bottle add temperature rear bending	１. bottle 胚偏心２.调 temperature or temperature base/seat 偏心３. bottle density 不一	１．修 positive mold ２．修 positive temperature 定位部 parts ３． reduce temperature degree, especially is bending 部位调 temperature temperature degree
pp>吹 bottle local 发白	bottle temperature 不足	increase pp> bottle 胚 temperature degree and inner outer uniform property
bottle temperature rear 发白	in 发白段 bottle temperature high	ensure pp> bottle 胚 in 80 degree 至110 degree pp>吹 bottle
pp> bottle 子吹不胀	１. gas pressure gas amount 不足２. bottle temperature 不足３. bottle injection molding defect	１. increase gas pressure gas amount ２. improve/increase temperature ２. use 100 degree water 检查pp> bottle 胚　 is soft uniform
拉穿胚底	１.胚底 temperature high ２.胚身 temperature low ３. plastics degradation heavy	１. adjustment temperature ２．拉查 more bottle and raw materials, add strong/high drying
bottle 胚偏心	１.　吹 gas 太早　　　 2.　风 pressure high ３． tensile and bottle for in ４． bottle 胚偏心严 heavy ５． tensile speed degree slow ６． tensile 杆离底模 large 于１.５mm ７． bottle temperature high	１．调 slow 延时吹 gas time ２． reduce pressure ３．修 positive 安装状态４．检查修 positive preform 情况５． adjustment tensile gas pressure ６．调 positive tensile 杆末端至底　　模１－１．５mm ７． reduce lower temperature temperature degree
bottle in direction 未吹满	１．不满部 separation bottle temperature high ２．不满部 separation bottle has cold block ３．风 pressure amount 不足４．吹 bottle gas defect ５．吹 bottle mold temperature high 　　　　６． bottle 胚壁太 thin ７． bottle toward tensile ratio 不足	１．调 positive pp> bottle 胚 temperature degree ２．不触摸 add hot rear 胚身, cold hard block is 否碰触３． add large gas gas pressure gas amount ４． increase gas 　　　　　５． in bottle add cooling water ６．修 positive mold ７． add large tensile ratio （纵 toward ）
pp> bottle 子园周 direction thick non-uniform	１． bottle 胚偏心２．调 temperature non-uniform ３．排 gas defect	１．改进 bottle mold ２．改进调 temperature equipment ３． will defect separation pp> bottle 胚 temperature degree 　　 reduce ４． increase large gas
bottle 子底部 has “火山口”状凸起	bottle 胚底部太 cold or bottle its it temperature degree high	提早吹 gas time, adjustment temperature temperature degree
吹 rear bottle 子 local 发白	１． local temperature 不足２． local tensile ratio large ３． pressure shrink gas in has water 份	１． increase bottle temperature degree ２．检查 bottle design ３． add strong/high water 滤油
bottle 子垂直承载 force defect	１．壁 thick non-uniform ２． bottle add temperature temperature degree high ３． bottle 子形状 defect	１． improvement bottle 子壁 thick uniform ２．尽 amount low temperature high pressure molding ３． improvement bottle type design
bottle 子 easy 跌破	１．底部壁 thick 未适当 tensile ２． plastics high temperature degradation	１． improvement tensile ratio ２． add strong/high front raw materials drying ３． reduce production temperature degree
bottle 子 inner has 麻点, 白雾	１．吹入不洁空 gas ２．空 gas wet degree large	１．设置空 gas plant/unit ２． reduce 吹入空 gas wet degree
bottle soft	１． design defect 　　　　２． processing temperature high	１．改进 design 　２．尽 amount in low temperature lower and 吹 bottle molding
吹 bottle rear has 焦臭味	１． add temperature high ２． pressure shrink gas defect ３． use poor raw materials	１． reduce 吹 bottle temperature degree ２．整理空 pressure machine and device ３． use positive material
bottle water rear time water 变味	１． bottle aldehyde content high ２． raw materials 不当	１． using/adopting low temperature and 吹 bottle ２．检查 raw materials processing front aldehyde content, troubleshooting poor raw materials

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PET bottle made as Common issues solutions