|||\\\
PSE 201 Final Exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
What are the major categories of chemical additives used for papermaking? - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔retention aids, sizing agents, fillers, strength agents, alum |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is so special about "alkaline papermaking?" - correct answer✔✔It allows the use of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
calcium carbonate as a filler. |||\\\ |||\\\ |||\\\ |||\\\
What are the three broad goals of the stock prep area? - correct answer✔✔Achieve desired
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
product properties, set/control sheet basis weight, increase sheet strength
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How is the stock prep area set up? - correct answer✔✔A collection of tile-lined tanks called
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
"chests." The dump chest contains the raw pulp. The mix (or blend) chest receives from the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
dump chest and the furnish components and feeds the refiners. The machine chest receives
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the refined stock and feeds the stuff box.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why do we refine? - correct answer✔✔It decreases yield loss at lower-cost grades
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What physical changes occur to a papermaking fiber when it goes through refining? What
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
changes occur to the stock? - correct answer✔✔They collapse into flat ribbons, fibrillate,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
become more conformable, and can be shortened. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where do fines come from? - correct answer✔✔Refining
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What things get better with refining? What things get worse? - correct answer✔✔Tensile and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
burst strength, formation, smoothness, and printability get better. Tear strength, freeness,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
yield, opacity, bulk, and air porosity get worse.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, |||\\\
What is the nature of the refining action? What type of equipment has been used to induce
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
this action into papermaking stock? - correct answer✔✔It is a "rolling friction." Equipment
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
that has been used to induce this include the beater, Jordan, Claflin, and disk.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is freeness? How is it measured? - correct answer✔✔Describes how freely water drains
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
from a fiber slurry. It is measured by the CSF test.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What relative refining energy level is required for various grades? - correct answer✔✔tissue <
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
linerboard base < multiwall bag < bleached board < fine papers < linerboard top < glassine|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why are some grades NOT refined? - correct answer✔✔Market pulp is normally not refined
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
because the customer will do it themselves. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What are the major goals of this area? - correct answer✔✔To deliver the right amount of fiber
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to the paper machine in order to meet basis weight specs, and to distribute that stock
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
uniformly.
What is the role of the basis weight valve? - correct answer✔✔It sets the average basis weight
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
of the sheet by metering thick stock to the fan pump.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why is the stuff box important? - correct answer✔✔It dampens pulsations from the thick
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stock pump that could cause sheet barring.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How is thick stock converted to thin stock? - correct answer✔✔The fan pump dilutes thick
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stock with white water from the fourdrinier
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the deculator? - correct answer✔✔It is a vacuum header that removes air after
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
centrifugal cleaning prior to the headbox. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
PSE 201 Final Exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
What are the major categories of chemical additives used for papermaking? - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔retention aids, sizing agents, fillers, strength agents, alum |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is so special about "alkaline papermaking?" - correct answer✔✔It allows the use of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
calcium carbonate as a filler. |||\\\ |||\\\ |||\\\ |||\\\
What are the three broad goals of the stock prep area? - correct answer✔✔Achieve desired
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
product properties, set/control sheet basis weight, increase sheet strength
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How is the stock prep area set up? - correct answer✔✔A collection of tile-lined tanks called
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
"chests." The dump chest contains the raw pulp. The mix (or blend) chest receives from the
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
dump chest and the furnish components and feeds the refiners. The machine chest receives
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
the refined stock and feeds the stuff box.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why do we refine? - correct answer✔✔It decreases yield loss at lower-cost grades
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What physical changes occur to a papermaking fiber when it goes through refining? What
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
changes occur to the stock? - correct answer✔✔They collapse into flat ribbons, fibrillate,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
become more conformable, and can be shortened. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Where do fines come from? - correct answer✔✔Refining
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What things get better with refining? What things get worse? - correct answer✔✔Tensile and
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
burst strength, formation, smoothness, and printability get better. Tear strength, freeness,
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
yield, opacity, bulk, and air porosity get worse.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, |||\\\
What is the nature of the refining action? What type of equipment has been used to induce
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
this action into papermaking stock? - correct answer✔✔It is a "rolling friction." Equipment
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
that has been used to induce this include the beater, Jordan, Claflin, and disk.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is freeness? How is it measured? - correct answer✔✔Describes how freely water drains
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
from a fiber slurry. It is measured by the CSF test.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What relative refining energy level is required for various grades? - correct answer✔✔tissue <
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
linerboard base < multiwall bag < bleached board < fine papers < linerboard top < glassine|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why are some grades NOT refined? - correct answer✔✔Market pulp is normally not refined
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
because the customer will do it themselves. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What are the major goals of this area? - correct answer✔✔To deliver the right amount of fiber
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to the paper machine in order to meet basis weight specs, and to distribute that stock
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
uniformly.
What is the role of the basis weight valve? - correct answer✔✔It sets the average basis weight
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
of the sheet by metering thick stock to the fan pump.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
Why is the stuff box important? - correct answer✔✔It dampens pulsations from the thick
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stock pump that could cause sheet barring.
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
How is thick stock converted to thin stock? - correct answer✔✔The fan pump dilutes thick
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
stock with white water from the fourdrinier
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the deculator? - correct answer✔✔It is a vacuum header that removes air after
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
centrifugal cleaning prior to the headbox. |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
