PSE 201 Test 1 Questions & Answers 2024/2025
When and Where was Paper Invented - ANSWERSChina 105 AD, Held totally confidential
Technical Definition of Paper - ANSWERSweb of cellulose fibers extracted from plant matter, deposited from a water distillation, and dried to form inter fiber hydr...
When and Where was Paper Invented - ANSWERSChina 105 AD, Held totally confidential
Technical Definition of Paper - ANSWERSweb of cellulose fibers extracted from plant matter, deposited
from a water distillation, and dried to form inter fiber hydrogen bonds
How much Paper and Board does the US manufacture each year? - ANSWERS74,375 million tonnes
which is 18.6% of the worlds production
How much paper and board is made in the world each year? - ANSWERS400 million metric tons
US paper consumption per capita - ANSWERS500 lb/year
Years that all paper was made by hand - ANSWERS105-1798 AD
Gutenburg Printing Press - ANSWERS1450 AD
Year of Continuous paper maker invention - ANSWERS1798
Kraft Process invented - ANSWERS1876
Paper:Board production ratio - ANSWERS40:60
3 major grades of paper and % total production of each - ANSWERSPaper (30%)
Board(60%)
Tissue(10%)
, Largest grade of paperboard - ANSWERSWood pulp board
paper board composition - ANSWERSLinerboard - on the outside and is produced using inbleached kraft
process or recycled material
Corrugating Medium - Inside of the liner board sandwich, made from semi chemical pulp or recycled
material
Where does raw material come from for paper? - ANSWERS1/3 recycled paper
1/3 wood residues
1/3 whole trees
Who owns most harvested trees? - ANSWERSThey are generally privately owned, small portion comes
from tree farms
How much of america is forested vs. NC - ANSWERS33% of US
64 % of NC
How much do growth rates exceed harvests? - ANSWERS72%
Types of Fibers - ANSWERSXylem - conducts water from roots to leaves
Phloem - conducts photosynthesis products from leaves to the roots
Properties of Softwood - ANSWERS-longer thicker fibers
-gives strength to paper
-made of primarily of tracheids (90%) and a smaller amount of ray cells(10%)
-average tracheid length 1.2-7.4mm
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