Viscosity/Extrusion
This is the chamber in which the screw turns and the plastic flows.
What is the barrel?
These types of polymers are typically used because they have a larger thermoforming window.
What is amorphous?
This is type of coextrusion process combines melt streams just before die exit.
What is multi-manifold?
This type of polymer is typically used for foam-in-place.
What is Polyurethane?
This is the most common street name in the United States.
What is 2nd street?
The feed throat is usually cooled to avoid premature sticking of the polymer known as this.
What is bridging?
These are the 3 steps for thermoforming.
What is heating, forming and trimming?
This is the name of the extra thickness created on the edge of cast film.
What are edge beads?
This type of foam cell structure only allows gases or liquids to move by diffusing through the polymer.
What is closed cell foams?
This is the highest-grossing movie of all time (unadjusted for inflation).
What is Avatar?
This is what generates the heat within the extruder and melts the resin that is being conveyed through the system.
What is friction?
This type of thermoforming uses an additional structure that helps with bottom thickness when using a negative mold.
What is plug assist?
Of cast & blown films, this film is usually more crystalline and hazy.
What is blown film?
This is the least expensive and most commonly used polymer foam in packaging.
What is EPS (Expanded Polystyrene)?
This is the number of puppies Pongo and Perdita had in 101 Dalmatians.
What is 15?
This type of viscous behavior is observed by polymers as shear rate is increased
What is pseudoplastic/shear thinning?
This type of mold (positive or negative) requires a larger draft angle.
What is a positive mold?
This cooling mechanism on a cast film line quenches the newly produced film on BOTH sides through CONDUCTIVE cooling.
What is three roll stack?
This is the component that is added to the polymer that created the bubbles in the foam as it vaporizes.
What is the hydrocarbon blowing agent/often times Pentane?
This fruit was thought by many people in the Western world to be poisonous until 1820.
What is the tomato?
This is the time required for a specified mass of a polymer to flow through a specified capillary under controlled conditions of temperature and pressure.
What is the melt index?
These are the 2 upper boundaries on the x and y axis for the operating window for thermoforming.
What are the max stress of the process/machine and the max strain/elongation of the thermoformed part?
This type of coextrusion mechanism is used when the materials have similar flow properties.
What is feedstock?
These types of foams are considered more environmentally friendly but can be moisture sensitive & can be attractive to rodents & insects.
What are starch based foams or "peanuts"?
The tradition of the Easter bunny originated in this country.
What is Germany?