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ITP409 Midterm 2

Terms in this set (34)

How is torque controlled with the roller screw capper?
The distance between rollers controls torque
Why is headspace filled with inert gas, steam or a vacuum?
To prevent premature deterioration of the product from air.
Why is Polyurethane used in Friction Wheels?
Abrasion Resistance, hardness
What capping method forms threads by moving rollers around a flexible shell to shape it to the contour of the threaded bottle neck?
Roll on Cap
What is the more precise type of screw cap motor?
Servo motors, which control torque electronically by controlling the current drawn
What is an example of a press on capped product?
Shampoo
What method is used to cap laminated foil caps?
Heat Seal Capping
What cap is used for Salad Dressing bottles?
Heat Shrink Cap
How is a lug cap tamper evident?
The cap caves in because of a vacuum caused by hot filling
When cap is opened, there is an audible pop
What type of cap is used for Pasta Sauce containers?
Lug Cap
How does an Induction Sealer work?
Magnetic field heats up the
conductive aluminum foil liner
and melts
Releasing the foil from the
cap.
The heat generated by
oscillating magnetic field also
melt the polymer coating on
the aluminum creating a bond
between liner and the bottle.
What is the function of a FTIR?
Shines infrared rays on a sample and depending on what is absorbed you can identify the kinds of chemical bonds present
What is the difference between a Flat Sealing Head and a Tunnel Sealing Head?
The Tunnel Sealing Head has more uniform electromagnetic distribution. The Flat Sealing Head has more variability because the railings are farther apart
What has a better seal when heated and pressure is applied: HDPE or LDPE?
LDPE because the branches entangle
What is the current called that is created in the metal liner of a bottle from magnetism of a coil?
Eddy Current
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