Perth Amboy evening news., 1922-09-18

revolution, CltlZen MaSSOn, a WO-
man, conducted an establishment
for the conversion of old papers in
to new. In 1901 Matthias Hoops
established the Neckinger mill at
Bermondsy. England, to de-ink
printed papers and make new pa
per therefrom. and in IS49 Henry
Il. Rogers, in a mill near Hartford,
Connecticut. made the first use in
the United States of old papers in
the manufacture of paper.
1t is only in recent years, how
ever, hat it has been realized that
it would not only be good business
to utilize the enormous waste rep
resented in printed paper, but was
an absolute necessity if the con-
sumption of newsprint continued to
grow and the supply of spruce tim
Der to diminish.
Early In 1921 the Forest Products
Laboratory of the Department of
Agriculture undertook a series of
comparative tests to determine the
efficiency Of a process using bento-
mite to accomplish the heretofore
almost impossible task of washing
all the CARBON black out of the
macerated pulp after it has been
loosened by alkalies S. D. Wells, the
engineer in charge of the expert
ments, now reports that they Were
successful.
, IN deinking printed paper and
especially newspaper" says Mr..
Wells, cit Is comparatively easy to
loosen the carbon black by dissolv-
ing the varnish of the printing ink
by use of alkalies. Such treatment
will not injure ground wood pulp
and If the carbon black could be
completely washed out after liberia
ton a satisfactory material would
be obtained. Unfortunately the fl
bres of the paper stock serve as a
very effectice filter in enmeshing
the particles Of carbon and there
are no means of washing in COM
NOR use that will permit their COM
plete removal without excessive
losses of pulp or expenditure of
time, water and power that are
prohibitive. In face a point seems
to be reached beyond which it is
impossible to remove the remaining
traces of ink. With b%entonite, how
ever, we have a substance that VIII
pass through ordinary filters and
with it's enormous surface, on ac-
count of the extreme fineness of its
particles, will carry all the carbon
black along with 1t"
Best Supply From Wyoming
Bentonite is defined by the Geo
logical Survey as "a transported,
stratihed, volcanic ash that has been
altered shortly after deposition 1t
is very fine grained and has the
property of swelling in contact with
water to several times its original
volume. Like any natural product
different deposits vary considera-
bly, and Mr.. Wells says the best
supply hat come to his notice is
found in Wyoming.
THE possibilities of a process for
the recovery of old newspaper stock
are apparent to anyone familiar
with the paper industry says Mr..
Wells when the price paid for
n old paper stimulated collection 1t is
reported that about $4,000 tons per
month were collected in Chicago, of
which 40 per cent was news. Dur
ing the same period Cleveland is
reported to have handled $50 tons
per day of which $50 tons were
news. In our large metropolitan
centers probably $500 tons per day
! were collected which would furnish
a very considerable portion of our
daily consumption of 1000 tons OF
~newsprint. The source Of this raw
material is Furthermore at the
place of consumption and the saw
ing in freight is a very important
item. The color requirements OF
the publishers at the present time
are very severe and n process
that does not thoroughly remove ink
cannot be successful. While consid-
cradle difficulty was encountered In
meeting these requirements in our
trials the results obtained as the
process has been finally worked out
seem to justify our belief that they
can be met"
The logical location for de-inking
plants according to the experts, VIII
be in a number of the large
centers where the supply of raw
material-old newspapers-is great
and most readily obtained with a
minimum of handling and hauling
charges, and where. in turn. the
demand for newsprint is greatest.
The utilization of the de-inkins
process therefore will not beneht
materially existing paper mills
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