吹瓶技术交流

InternalUseOnlyPresentationSubject2007SCMCQAInternalForum–Suzhou吹瓶技术经验交流吕神勇2012.12.10InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly常见的吹瓶机:SidelKronesKruppSipaInternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹瓶机分为5个部分1,进坯系统2,加热系统3,吹瓶转轮4,控制系统5,辅机InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly瓶坯的加温InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly末区短时平衡加热炉加热炉中间稳定区红外线加热灯箱反光板加热炉InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnlyKrones加热灯箱反光板红外线加热灯管瓶坯12mm16mm瓶口风冷第一区灯管功率为3000瓦其余各区均为2500瓦InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnlyKRONES加热灯箱InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly瓶坯颜色对加热的影响有色瓶坯比透明瓶坯吸热效果好，所以吹同一瓶形时，用有色瓶坯则加温炉的灯管功率需适当减少．InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹瓶转轮InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly瓶子的吹塑过程1234561,拉伸杆拉伸2,预吹气压进入4,高压气进入，保压3,预吹获得外形5,拉伸杆吹气冷却(只有热灌装才有)6,排气InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹塑周期示意图InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹瓶气压变化曲线InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnlyPoint0andPoint100点:拉伸杆刚刚接触到瓶坯底部时模具所在的位置,用角度表示.10点:拉伸杆拉到瓶子底部时模具所在的位置,用角度表示.0点10点InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly底模与拉伸杆间隙HH=23δδ表示瓶坯底部壁厚InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly热定型的基本原理提高模温有两个作用:1,提高瓶子结晶度2,释放内部应力应力的释放比提高结晶度更重要InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹瓶过程常见问题及解决方法InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly吹瓶过程中问题的处理程序1,连续吹瓶过程中取5模瓶样并检测,看缺陷是否与模具号对应.2,如果瓶样各模号之间有差别,但同一模号的5个瓶子都一样,那么可确定是某工位或模具有问题.认真检查该工位的拉伸、预吹、高压吹、吹咀、模具排气、模具温度、高压补偿等.3,如果瓶样有差别,但与模号不对应,那么应该考虑:加温炉芯轴头是否一致,电力、压缩空气、冷冻水等是否稳定,模温机工作是否稳定,瓶坯是否过期或注塑不良.4,瓶样没有差别,全部都不合格,应该考虑:拉伸杆是否正确,拉伸凸轮与瓶形或机器的速度是否匹配,瓶坯是否正确,是否过期或注塑不良,检查电、气、水等是否合适.InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly常见问题及解决方法容量不合适1,调整镶块垫片(无菌瓶无此项)2,调整高度垫片3,检查并调整高压吹气压力4,调整模具温度5,调整拉伸杆吹气时间(无菌瓶无此项)6,调整保压时间,可通过缩短或延长排气时间来调整保压时间.7,调整瓶坯温度.InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly瓶子椭圆1,检查合模间隙2,降低吹瓶速度3,提高吹瓶气压4,降低模具温度5,延长拉伸杆吹气时间6,减少排气时间7,调整瓶坯温度8,检查模具排气孔是否顺畅9,检查模具温度是否一致10,调整吹瓶工艺,让椭圆处更厚11,检查拉伸杆是否匹配,安装方位是否正确.InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly耐热性差1,降低吹瓶速度2,检查吹瓶气压是否足够3,提高模具温度4,减少拉伸杆吹气时间5,减少排气时间6,提高瓶坯温度7,检查油路是否畅通,实际模温是否达到要求InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly同一圆周壁厚不均匀1,进坯夹子是否与模具同步2,瓶坯在加热或运转过程中是否会接触到其它物体.3,检查拉伸杆是否对中4,穿透炉功率不够,导致瓶坯内外壁温度不均匀5,预吹角度太早6,预吹压力太大7,预吹时间太短8,预吹流量太大9,加热炉内的芯轴头是摆动或瓶坯装载不到位10,检查瓶坯是否偏心InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly底部偏心1,检查拉伸杆是否对中2,预吹角度太早3,预吹压力太大4,预吹时间太短5,预吹流量太大6,加热炉内的芯轴头摆动大7,瓶坯偏心8,拉伸凸轮不合适9,进坯夹子故障,不能正确送坯10,拉伸杆与底模间隙太大11,坯温太高InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly真空度不够:1,提高坯温和模温,以提高瓶子结晶度2,调整工艺,将容易凹陷的地方吹厚些3,适当加多镶块垫片.InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly爆瓶:1,提高坯温和炉温2,工艺调整时瓶坯不能有太热与太冷的过渡3,模具上是否有毛刺4,预吹不合适,不能将瓶坯吹开,高压气进入时将瓶子吹破5,瓶坯壁厚不均6,瓶坯粘度太低7,拉伸杆是否有毛刺或破损InternalUseOnlySCMCSupplier&Co-packerworkshopInternalUseOnly底部应力开裂不合格1,降低底模温度2,降低瓶坯底部温度3,调整工艺,将底部厚度调整到合适,底部太厚和太薄都不好.4,加大出瓶口的风机功率,补充冷却底部5,检查瓶坯是否过期,是否有缺陷,必要时更换另外批号的瓶坯.