The Washington times., 1923-03-25

added to I'll TIT correct proportions.
consequence of its work on this
tterg tbs United States Rubber
Company ii now able to hiring Iatex
st0. lsis country IN 9gtgae condition
II tank ;oi snip ahts develop.
slssefit vas one .d the irsl ia q chain
Of recent dlsscoyerten ~ the United
tats ubbe which prone
stse u .fsiyIeluE many manufac-
t1pins process ecially the man,
eng the srsat Advantages OF
The new proeasseaf the Units states
tts1bner III has been contract
I'm Tor tl1e islt ter bdsictjon a0f sew
efal rs the her plant tionsSln the
t'trt lis source spf supply.
cpsipled vi he latex produced on
its.cwrt large III plantations IN Sumatfa
and. Malaga, assures the company of
an adequate supply Of rnbbeE in Iatex
form for an extended period and
with considerable advantage TO tFf
plantation companies from whom
latex Is being obtained.
One of the most important of thu
discoveries is q new method Of ex,
tracing the rubber from the latex
This process gives to the world a
rubber far superior to any ever sc.
cured by the old process.
Under the old method OF separat.
ing the rubber from the .latex--a
process known to the industry as
oagulation-the latex was poured
into vat or, pan. Chemicals were
usually added, and soon the rubber
particles would come together In
white, moist mass. The rubber mas
thus formed was then removed from
the remaining liquid and run through
rollers to press out the moisture.
Not only did this old method fai
to utilize all the rubber from the la
tex, but the part that remained IL
now known to be of great additional
value.
Under the new process, a tinl
stream of latex Is permitted TO fal
on a rapidly revolving metal disc in
a hot room. Highly atomized by tbt
rotation Of the disc, the latex II
broken Up into tiny particles. The
air, Internningling with these tiny
particles of rubber, dries them prAc-
tically instantly without raising the
temperature to a. point that IL harm
full to the rubber. The useless liquid
IL carried off as a vapor. leaving the
pure rubber behind.
The disc spray process 10 also of
great value In that II provides q new
and greatly improved method OF mix
ing the crude rubber with the Va
rious compounds which must be add
ed during the process Of manufac
~ az
arriving at the, factory in It's herd
dry state, has been cut up and then
worked into a soft dough by being
passed through powerful, hot rolls.
The compromising ingredients were
then poured over the soft dough,
which was run through the rolls
again several times in order to bring
about as even a mixture as possible
Under the new process the other
essential materials may be sprayed
from the disc at the same time as
the latex, and each particle OF rubber
receives it's correct proportion To pre-
pare the rubber correctly for manu-
featuring purposes.
Since rubber first became an ar
tlcle OF commerce nearly a century
ago, one OF the bugbeaFs Of the in,
dustry has been the utter lack al
uniformity in the crude rubber as 1t
came to the factories to be manu-.
featured into rubber goods. There
has been some Improvement under
plantation methods. but 1t can read.
lily be seen that with so many differ
ent plantations there has been of
necessity wide variation in thu
rubber produced. Under the nsw
process developed by the Unired
States Rubber Company. uniformity
IL ut last established and one Of the
biggest obstacles to successful manu-.
facture disappears, with the obvious
resulting advantage TO the lnanufac
tured article and thus to the benefit
of the consumer.