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西得乐的热定型工艺SidelHeatSetTechnology适用于敏感饮料Forsensitivebeverages主讲人:兰尼先生ConductedbyMr.LudovicLAINEPET耐热瓶、无菌灌装及ACTISTM等离子工艺与应用技术交流会SIDELTECHNICALCONFERENCEONHR-BOTTLE,ASEPTICANDACTISTM2001年12月4、5日DECELMBER4TH&5TH,2001中国上海Shanghai,CHINA应用领域Applications适用于包装各类敏感饮料,如Forthepackagingofsensitivedrinkssuchas:果汁Fruitjuices茶Teas健康饮料Isotonicbeverages其它饮料等etc...Titles基本原理热定型的基本原理单轮吹塑工艺轻体瓶线性结晶炉西得乐热灌装设备在亚洲的分布情况西得乐在亚洲的联络方法BasicPrincipleHeatSetfundamentalsOnewheelTechnologyLightweightingLinearcrystalovenReferencesinAsiaContactsinAsia基本原理Basicprinciple主要工艺参数Mainparameters当前的灌装方式Currentfillingmethods:•非连线热灌装Offlinehotfilling•连线吹瓶、灌装Integratedblowingandfillingoperation热灌装瓶的热应力和机械应力Thermalandmechanicalstressesforhotfilledbottles•膨胀,继而负压变形Inflationthencollapsing•局部变形Localdeformation•收缩Contraction主要工艺参数Mainparameters灌装温度Fillingtemperature灌装水平Fillinglevel瓶子的存储条件(湿度,温度,时间等)Bottlestorageconditions(RH,Temperature,time...)瓶子的输送条件(顶压,侧压等)Bottlehandlingconditions(Verticalload,sideload...)隔氧性能O2barrier抗紫外线性能U.V.barrier抗真空性能Vacuumresistance热定型程度Degreeofheatsetting瓶口的设计Neckdesign热定型的程度Degreeofheatsetting吹瓶机的产量Bloweroutput瓶子的重量及设Bottleweight&design与吹瓶及灌装有关的工艺参数PARAMETERSLINKEDTOTHEBLOWINGANDFILLINGOPERATION:具体说明SPECIFICATIONS:{{与产品有关的工艺参数PARAMETERSLINKEDTOTHEPRODUCT:非连线灌装Offlinefillingoperation生产参数Parameters:•产量Output•模温Moldtemperature•生产条件ProcessConditions运输Transport灌装+封盖Filling+Capping冷却COOLING码垛PALLETIZING•湿度RH•存放时间Time•存放温度°C•垂直负荷Topload•灌装温度Fillingtemperature•旋盖钮力Torque•真空Vacuum•冷却时间Time•液面高度Fillinglevel•垂直负荷Verticalload制瓶厂BOTTLEPRODUCTIONPLANT灌装厂BOTTLEFILLINGPLANT•湿度RH•存放时间Time•存放温度°C•垂直负荷Topload连线吹瓶、灌装Integratedblowingandfillingoperation灌装+封盖Filling+Capping冷却COOLING码垛PALLETIZING生产参数Parameters:•产量Output•模温Moldtemperature•生产条件ProcessConditions•湿度RH•存放时间Time•存放温度°C•灌装温度Fillingtemperature•旋盖钮力Torque•真空Vacuum•冷却时间Time•灌装水平Fillinglevel•垂直负荷Verticalload缓冲区BUFFER热灌装瓶的热应力和机械应力Thermalandmechanicalstressesforhotfillbottles灌装Filling(70°Cto95°C)传输Conveying冷却Cooling变形(材料变软)Distortions(materialsoftening)静压HydrostaticPressure真空Vacuum封盖Capping局部变形Localizeddistortions热灌装HotFilling灌装方式Operatingmethod将液体加热至一定的温度,这个温度可使液体消毒Theliquidisraisedtoatemperatureenablingittobesterilized在此温度下进行灌装(温度最高可达92°C)Thebottleisfilledatthistemperature(upto92°C)瓶盖通过与高温液体的接触而进行消毒Sterilizationofthecapisobtainedbycontactwiththehotliquid逐步冷却Gradualcooling特殊的应力因素Specificstressfactors膨胀,继而负压变形Inflationthencollapsing局部变形Localdeformation收缩Contraction膨胀、继而负压变形Inflationthencollapsing液体的冷却及瓶颈部位的气体导致瓶子内部真空压力的产生:即通常所说的“负压变形”现象Effectofinternalvacuumpressureresultingfromthecoolingoftheliquidandtheairintheheadarea:phenomenonknownas“collapsing”温度的升高及材料的机械应力Riseintemperatureofthematerialcombinedwithmechanicalstress瓶颈部位气体的膨胀:加剧瓶子的膨胀Expansionoftheairintheheadarea:increasedinflation液体对瓶壁产生静压:瓶子膨胀Hydrostaticpressureexertedbytheliquidonthewalls:bottleinflation材料变软,极易变形Materialissoftened,easilydeformed在包装过程中局部产生压力Stressexertedlocallyduringpackaging局部变形Localdeformation未经拉伸的瓶颈与高温液体接触:材料塑化,存在变形的可能Contactoftheunstretchedneckwiththehotliquid:thematerialbecomesplastic,deformationispossible灌装后的瓶子在仍保持高温的状态下被输送:与输送和引导设备接触而导致变形Conveyingofthefilledbottleswhilestillhot:deformationoncontactwiththetransportandguidingequipment由于瓶盖产生机械应力:存在变形的风险Mechanicalstressexertedbythecap:riskofdeformation材料固有的特性导致变形Deformationresultingfromtheintrinsicpropertiesofthematerial拉伸而导致的应力在高温下释放,但吹瓶之后材料中仍存在残留的应力Releaseundertheeffectofheatofthestressfactorscausedbystretchingandwhichremaininthematerialafterblow-molding因材料本身具有一种保持应力较低状态的天然倾向而导致的变形Deformationofthematerialwhichnaturallytendstowardsastateinwhichthelevelofstressislowest“记忆”作用“Memory”effect收缩ContractionTitles基本原理热定型的基本原理单轮吹塑工艺轻体瓶线性结晶炉西得乐热灌装设备在亚洲的分布情况西得乐在亚洲的联络方法BasicPrincipleHeatSetfundamentalsOnewheelTechnologyLightweightingLinearcrystalovenReferencesinAsiaContactsinAsia热定型的基本原理HeatsetfundamentalsPET的热特性P.E.T.thermalproperties•结晶度对软化温度的影响InfluenceofcrystallinityonTg•材料处于不同状态时的特性Statesproperties•结晶的来源Originofcrystals•受热导致的结晶Heatinducedcrystallinity•拉伸导致的结晶Straininducedcrystallinity•拉伸及受热共同导致的结晶Combinedstrain&heatinducedcrystallinity•吸湿性的影响Influenceofmoisturepickup耐热瓶的吸湿过程KineticofwaterabsorptioninHRbottles结晶度对水分吸收的影响Effectofcrystallinityonwaterabsorption•应力的释放Stressrelaxation抑制应力的产生Limitedinducedstress释放产生的应力Relaxationofinducedstress关于热定型HeatsetansweringPET的受热特性PETthermalproperties材料处于不同状态时的特性Statesproperties机械强度Mechanicalresistance热稳性Thermalstability对热十分敏感Highsensitivitytoheat:当接近软化温度时,PET变软PETsoftenswhenapproachingTg记忆现象:材料回到最初的状态Memoryphenomena:materialreturnstoitsoriginalshape无序状态Amorphousstate结晶状态Crystallinestate导致结晶的因素Originofcrystals温度升高Temperaturerise机械拉伸Mechanicalstretching球粒结晶Spheruliticalcrystallization其它因素导致的结晶Inducedcrystallization7075808590951000102030405060Xc%Tgonset(°C)受热结晶HeatCristallisation拉伸+受热Orientation+heat软化温度Tg=f(X)软化温度与结晶度InfluenceofcrystallinitylevelonTg受热导致的结晶HeatinducedcrystallinityR=3m受热Heat无序状PETAmorphouspet不透光结构Nontransparentstructuretovisiblelight球粒结晶SpherulitePET的双向拉伸:对分子结构的影响Petbi-orien
本文标题:西得乐PET瓶工艺
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