SUNDAY, APRIL 19, 1959
HERALD AND NEWS, KLAMATH FALLS, OREC.ON
PACE SEVEN
Tree Bark. Now Burned At Mills, May Be Source Of New Forest Industry
The huge amounts of tree bark
now burned at mills may become
raw material ot a new industry
to make boards for construction
as a result of work at Oregon's
ruresi nesearcn center in Cor
vallis, according to John B. Gran.
thain, director of forest products
siuuies
Work by C. H. Burrows has
shown bark particles will bind to
getlier under heat and pressure
to torm boards useful in build
ing. Bark board has the poten
tial advantage that expensive bind
ers needed for most particle
ooaras coma? De reduced or elim
inated entirely.
Whole bark is reduced to us
able particles by a simple pro
cess of hammer milling, drying.
ana screening. Processing into
boards is similar to methods fol
lowed in making wood particle
boards. Existing plants could make
nils new product.
Burrows stated that Douglas fir
Dark, in particular, .contains built
in binder and size in the form
of natural waxes, tannins, and
, phenolic substances. Preliminary
studies indicate these natural bind
ers provide boards with strength
for many uses. Added strength
or special surfaces where needed
can be gained by overlays of hea
vy paper, veneer, or other ma
terial, bonded to each side of the
bark board.
Investigation of bark boards was
an outgrowth of the Forest Re
search Center's work on floor tile
from the cork fraction of Doug
las fir bark. Production, finishing,
and testing of experimental tile
from Douglas fir cork are de
scribed in a report to be released
soon. Properties and estimated
costs of the experimental tile indi
cate that it should ha competitive
with other types of floor covering.
The forthcoming report on cork
me loiiows closely a companion
report on floor tile from planer
snavings wnicn was released re
cently as Information Circular No
12.
The Forester Research Center
helped pioneer Oregon's thriving
hardboard industry. Starting with
one small plant in Corvallis some
14 years ago, seven plants in the
state now make one-fourth of the
nation s hardboard. The combined
capacity of Oregon mills is more
than 37 million square feet monthly.
Growing production of wood par
ticle, board from mill residues has
been stimulated by research. Po
tential use of bark residues for
boards is the latest development
in a series of studies to aid pro
ducers of hardboard and particle
ooard.
Staff at the research center be
lieve use of bark for particle
boards, floor tile, and soil amend
ment will improve timber utiliza
tion until bark becomes a profit
able source for chemicals.
Ultimately the waxes, tannins
and other components of bark
vill have high value when isolat
ed and sold for specific uses. Stu
dies of" bark chemicals begun at
Hie center by E. F. Kurth and
continued under direction of Doug
las W. Glennie, revealed that sub
stantial quantities of potentially
valuable extractives are present in
bark. Douglas fir and other barks
contain natural waxes that could
compete with high-quality, import
ed, vegetable waxes in polishes
of all kinds, in carbon paper, and
in olher commercial products.
Rancidity in oils, fats, and dairy
products may be prevented by
derivatives of dihydroquercetin, a
chemical in Douglas fir bark. This
non-toxic flavanoid acts to slow
oxidation.
Development of these and other
markets for bark extractives would
improve the opportunities for prof
itable tannin production from
western tree barks and establish
them as competitors of imported
tannin materials now used in lea
ther tanning and oil well drilling
The center's work on bark ex
tractives has led to five state
owned patents available to indus
try on a licensing basis. One ma
jor timber company has these un
der consideration in its search for
the best commercial process.
Further development of bark as
a source of raw materials for chem
ical industry could follow commer
cial production of bark extrac
tives. Chemical utilization of
bark now stands at about the same
point that chemical use of petrol
eum and coal tar did 50 years ago.
A start has been made in indus
trial use of bark extractives for
oil well drilling, but this repre
sents only a small beginning in
obtaining the values present.
The more than 2 million tons of
bark accumulated annually at Ore
gon sawmills and veneer mills
constitute a rich potential for
chemical use.
The Forest Research Cenler in
Corvallis is a state agency sup
ported by a severance tax on logs
harvested, and by general fund
appropriation. The center is de
voted to increasing the returns
from our forests and improving
Oregon's basic industry.
J
J LM xItJ iVt
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CHARLES H. BURROWS, wood technologist, displays experimental boards made from
Douglas' fir bark at Oregon's Forest Research Center in Corvallis, Tree bark when ground
into particles will form boards under heat and pressure without added binder. Burrows
is holding one board made entirely of bark; other boards are overlaid with paper or
veneer. Such boards may lead to a new industry based on the vast quantity of bark
now burned at mills.
Cash Registers Chime
Obligatto In Markets
. NEW YORK (UPD Cash regis
ters are playing obligatto in a
supermarket symphony these days.
Bells of money machines are
heard against a background of
song in nearly 61 per cent of the
nation's large food stores, as "mu
sic to buy by" gains popularity.
Storecast System, the largest
supplier of background music for
supermarkets, reports that house
wives have musical loyalties as
well as food brand loyalties.
They like bright, gay melodies
in the morning and late afternoon,
and soft, relaxing tunes around
mid-day.
A recent agreement between the
Storecast System and the Amer
ican Society of Composers, Auth
ors and Publishers tASCAP) is
bringing millions more selections.
The current favorites include
"Blue Skies," "Whistle While You
Work," "Fascination," "Stardust'
and "It's a Lovely Day Today.'
"Tea for Two" is the only song
on the list of 32 top tunes that
refers to mealtime. So maybe su
permarket managers aren't ready
lor all-out psychological warfare,
although they have plenty of am
munition on records waiting to
be played.
For instance:
"Yes, We Have No Bananas"
could announce shortages ot the
fresh fruit and vegetable depart
ment. Quickly followed by an al
ternate suggestion, "Life Is Just
a Bowl of Cherries."
"One Meat Ball" and "Shrimp
Boals Acoming" might be played
if meat supplies were low and
shellfish plentiful.
'Shortenin' Bread" or "Shoo Fly
Pie and Apple Pan Dowdy" could
proclaim the day's specials at the
bakery counter.
"You're the Cream in My Cof
fee" would be a good reminder
at the dairy department.
And, as Mrs. Shopper exits from
the cheok-out line, give her a final
appreciative chorus of "This Was
a Real Nice Clambake."
GOOD NEWS
WASHINGTON (UPD - Army
cooks in the Military District of
Washington are getting expert
training. Every eight weeks, four
of them join the kitchen staffs at
two big Washington hotels for in
tensive study of food preparation
and service. The GI's are graded
each week by the hotel chefs under
whom they work. And theres a
final examination at the end of
the course.
COINCIDENCE
NEW LONDON.. Conn. (UPD
And whom do you think the U.S.
Submarine Base picked as "Sai
lor of the Month?" Chief Petty
Otficer Davey Jones,
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