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课程测试题一.pdf

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课程测试题一:
shapes of bottles and jars, it is frequently desirable to have the fill
line at the same height on each container so that all of them appear to be filled exactly the same when they are on the display shelf. Some
manufacturers deliberately add extra product and overfill some of their “see through” containers in order to improve their appearance and
to guarantee that all of them contain at least the minimum desired amount of product.
In this section you will learn the operation of five basic methods used for constant level filling of still liquids and semi-liquids and one
method used for filling carbonated products. You will also learn ways in which each method is used and their basic machine maintenance requirements.
Molding and forming techniques can cause minor irregularities in the sizes of shapes of rigid glass and plastic bottles and jars, and some semi-rigid
containers may also change their shape and volume slightly during the filling process. It is frequently more economical to use additional product
in the oversized containers than it would be to more closely control the forming processes 1 . Constant level filling techniques compensate
for the minor changes and variations in the containers and produce the uniform appearance that is important in the sale of many products in
“see through” containers.
Pure Gravity Filling. Pure gravity(Figure ) is not only one of the oldest and simplest constant level filling methods, but it is also one
of the most accurate ones for filling free-flowing products. Some gravity fillers can eliminate the need for overflow and recirculation of the
product, and some can hold aeration of the product to a minimum.
Pure gravity filling can be used for most still liquids and some semi-solids. Products with consistencies as heavy as catsup or musta

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