Properties & Permeation
Time & Temperature
Adhesives
Other Properties
Grab Bag
100
This is the uptake of the product into the packaging material.
What is scalping?
100
This tool allows us to use the measurement at different temperatures to predict behavior over very long-time scales, even tens of years.
What is a time temperature superposition?
100
True or False. If water has a surface tension of 73 dynes/cm and PET has a surface tension of 43 dynes/cm, water will wet the surface of PET.
What is false?
100
This property is the measurement of the area under a stress strain curve.
What is toughness?
100
Of the six main characters on the TV show “Friends,” this character never got married.
Who is Joey?
200
This is the transfer of substances originally present in teh plastic material into the packaged product.
What is migration?
200
This type of test imposes a fixes load and measures the change in strain.
What is creep?
200
This type of bonding occurs between paper and adhesives.
What is mechanical?
200
This property is measured by the area under a stress strain curve up until the yield point.
What is resilience?
200
This was the first Disney princess.
Who was Snow White?
300
Elevated temperatures and high humidity both have this effect on the permeation rate of a substance.
What is increases permeation?
300
This type of test results from a constant change in strain with a resulting stress.
What is stress strain?
300
This type of separation/bonding mechanism is depicted here:
What is cohesive?
300
Of the 4 common stress strain curves, this is the one that is likely associated with the toughest materials.
What is ductile cold draw with strain hardening?
300
This was the year the first Earth Day was celebrated.
What is 1970?
400
Loss of water & carbon dioxide, uptake of moisture in dry snacks, and oxidation of oxygen-sensitive products are all examples of this type of mass transfer.
What is permeation?
400
On a ductile cold draw with strain hardening curve, this is where we no longer see any elastic recovery.
Where is the beginning of strain hardening?
400
These two treatments can aid in the wetting of a substrate surface to aid in adhesion.
What is corona treatment or flame treatment?
400
These are notches, cracks, holes, etc. that greatly reduce the apparent strength of polymers.
What are stress concentrators?
400
This is the largest island in the world.
What is Greenland?
500
When measuring the increase in weight of a salty snack package over a period of time, when there is a period of time when there is no longer any increase in weight we know that this has occured for the package, snack and the atmosphere.
What is equilibrium?
500
This spring and dashpot model best represents, even though still pretty basic, the viscoelastic behavior of polymers.
What is Burger's model?
500
When there is a peelable seal, it is likely that the adhesion between the adhesive and the substrate is due to this.
What is secondary or Van der waal forces?
500
This tear property depends on the toughness of the plastic.
What is tear propagation?
500
This celebrity has hosted SNL the most.
Who is Alec Baldwin?