聚酯PET热灌装饮料瓶基础知识概述.ppt

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1、Range范围Advantages效益Specifics细节Heat-resistantbottles热灌装瓶Description描述SpecificsBasicprinciple基本原理Hot-filling热灌装Pasteurization巴氏杀菌Purposeofheat-setting加热设定的目的Wateruptakeconcept吸水概念Basicprinciple基本原理Blow-moldingofPETbottlestowithstandhightemperatureswithn

2、odeformation所吹制的PET瓶必须能承受高温而不变形standardbottlesaredeformedundertheeffectofheatfrom60°Cupwards标准的瓶子加热至60°C以上开始变形adaptationofheatconditioningandblow-moldingprocessesenablesbottlestowithstandtemperaturesofupto88°C适当的加热条件和吹瓶工艺能使瓶子承受88°C的温度Applicationtothep

3、ackagingofsensitivedrinkssuchasisotonics,fruitjuices,teasetc.应用作敏感饮料包装例如等压、果汁、茶等Hotfilling热灌装Pasteurization巴氏杀菌Hotfilling热灌装Operatingmethod操作方法Theliquidisraisedtoatemperatureenablingittobesterilized液体温度提升至能灭菌的温度Thebottleisfilledatthistemperature(upto8

4、8°C)瓶子在这温度下(高至88°C)灌装Sterlizationofthecapisobtainedbycontactwiththehotliquid瓶盖与热的液体接触进行灭菌Gradualcooling分段冷却Specificstressfactors特殊的应力因素Inflationthencollapsing膨胀后扁平Localdeformation局部变形Contraction收缩Inflationthencollapsing膨胀后扁平Riseintemperatureofthemater

5、ialcombinedwithmechanicalstress含有机械应力的材料温度升高materialissoftened,easilydeformed材料变软，容易变形Hydrostaticpressureexertedbytheliquidonthewalls:bottleinflation液体在瓶壁上产生向外的静压：瓶膨胀Expansionoftheairintheheadarea:increasedinflation顶部空气膨胀：增加膨胀Effectofinternalvacuumpre

6、ssureresultingfromthecoolingoftheliquidandtheairintheheadarea:phenomenonknownas“collapsing”由液体和瓶颈空气冷却而产生真空压力：已知现象如“扁平”Localdeformation局部变形Stressexertedlocallyduringpackaging在包装过程中外界压力局部地作用Mechanicalstressexertedbythecap:riskofdeformation封盖的机械应力：变形的风险C

7、onveyingofthefilledbottleswhilestillhot:deformationoncontactwiththetransportandguidingequipment已灌装的瓶输送静止受热：与输送链条接触和导向处变形Contactoftheunstretchedneckwiththehotliquid:thematerialbecomesplastic,deformationispossible未拉伸的瓶颈与热的液体接触：材料成为塑料态，有可能变形Contraction收缩

8、Deformationresultingfromtheintrinsicpropertiesofthematerial材料的固有特性导致变形Releaseundertheeffectofheatofthestressfactorscausedbystretchingandwhichremaininthematerialafterblow-molding拉伸和吹塑后残留在材料里的应力在热量的作用下被释放Deformationofthematerialwhichnaturallyten