wood pack Flashcards
are the significant materials in the history of packaging.
paper and wood
has stimulated more packaging developments.
paper and wood
are among the oldest packaging materials.
wood and woody fibers
two general categories of wood
-softwood
-hardwood
have simpler cellular structure?
softwood
are wood that are more complex and has condensed structure?
hardwood
this category of wood performs better and has superior fire resistance.
hardwood
three applications of wood.
-plywood
-particle board
-fiberboard
wood composition of cellulose?
40-45%
wood composition of hemicellulose (soft)
25-30%
wood composition of hemicellulose (hard)
20-35%
wood composition of lignin?
20-30%
an organic compound
cellulose
A polysaccharide consisting
of a linear chain of several
hundred to over ten
thousand β linked D-glucose
unit.
cellulose
A group of heterogeneous
polysaccharides which is
formed through
biosynthetic routes.
hemicellulose
It has a 200-degree
polymerization
hemicellulose
Main classes of structural
material in the support
tissues of vascular plants
and some algae.
lignin
Important in formation of
the cell wall.
lignin
Cross-linked phenol
propane polymers
lignin
properties or specifications of wood
• High Strength
• High Stiffness
• Durability
• Excellent Rigidity
• Stacking strength
• Physical protection
properties or specification of hardwood
▪ Barrels
▪ Pallets
▪ Heavy Duty Crates and Boxes
properties or specification of softwood
▪ Kraft Paper
▪ Board Liners
▪ Light Duty crates and Boxes
are used for gathering food, carrying goods and ceremonial
and decorative purposes.
baskets
Dating back in 10,000 – 8,000 B.C ———– have been seen in EGYPT
primarily in arid places.
baskets