聚酯PET热灌装饮料瓶基础知识概述（PPT 43页)
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资料简介：
Heat-resistant bottles 热灌装瓶
Specifics
Basic principle 基本原理
Blow-molding of PET bottles to withstand high temperatures
with no deformation所吹制的PET瓶必须能承受高温而不变形
standard bottles are deformed under the effect of heat from 60 °C upwards
标准的瓶子加热至60 °C 以上开始变形
adaptation of heat conditioning and blow-molding processes
enables bottles to withstand temperatures of up to 88°C
适当的加热条件和吹瓶工艺能使瓶子承受88°C的温度
Application to the packaging of sensitive drinks such
as isotonics, fruit juices, teas etc.
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
Operating method操作方法
The liquid is raised to a temperature enabling it to be sterilized
液体温度提升至能灭菌的温度
The bottle is filled at this temperature (up to 88°C)
瓶子在这温度下(高至 88°C)灌装
Sterlization of the cap is obtained by contact with the hot liquid
瓶盖与热的液体接触进行灭菌
Gradual cooling 分段冷却
Specific stress factors
特殊的应力因素
Inflation then collapsing 膨胀后扁平
Local deformation 局部变形
Contraction 收缩
Inflation then collapsing膨胀后扁平
Rise in temperature of the material combined with mechanical stress
含有机械应力的材料温度升高
material is softened, easily deformed
材料变软，容易变形
Hydrostatic pressure exerted by the liquid on the walls: bottle inflation
液体在瓶壁上产生向外的静压：瓶膨胀
Expansion of the air in the head area: increased inflation
顶部空气膨胀：增加膨胀
Effect of internal vacuum pressure resulting from the cooling of
the liquid and the air in the head area: phenomenon known as “collapsing”
由液体和瓶颈空气冷却而产生真空压力：已知现象如
Local deformation局部变形
Stress exerted locally during packaging
在包装过程中外界压力局部地作用
Mechanical stress exerted by the cap: risk of deformation
封盖的机械应力：变形的风险
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