Title of Invention

A PROCESS FOR TREATMENT OF COCONUT FIBERS

Abstract A process for treatment of coconut fibers which comprises in crushing the huskafter removal of the nut so as to loosen the fibers and pith, soaking the husk in water, separately the husk from fiber characterized in applying an oil in water emulsion to the surface of the separated, fibers under ambient conditions wherein the ratio of oil to water in said emulsion 15 to 85 to 25 to 75.
Full Text FIELD OF INVENTION
This invention relates to a process for the treatment of coconut fibers after
separation from husk.
BACKGROUND OF INVENTION
It is generally that fiber is embedded in hu.sk along with coir pith. Coir pith
is present to the extent of twice the amount of fiber. As the fiber is to be
softened in order to facilitate spinning into yarn, the fiber is soaked in water
in order for removal of the colouring matter and softening of the fiber.
Normally, such a step of soaking in water is effected in backwaters over a
period of several months. However, a distinet disadvantage associated with
such a method of soaking the fibers is that of pollution of backwater.
In order to obviate such a disadvantage, it is known to treat the fibers with a
bacterial mixture, and the treated filers are then spun into yarn. However, a
disadvantage is that the fibers are fed manually into a spinning machine, and
the fibers could cause an injury to the hands of a worker.

OBJECTS OF THE INVENTION
An object of this invention is to propose an improved method for treatment
of coconut fibers
Another object of this invention s to propose an improved method for
treatment of coconut fibers which obviates the disadvantages associated with
those of the prior art
Still another object of this invention is to propose an improved method for
treatment of coconut fibers which acilitates an easier handling of the fiber
by a worker
Yet another object of this invention. is to propose an improved method for
treatment of coconut fibers which no longer causes any pollution
A further object of this invention is to propose an improved method for
treatment of coconut fibers which does not affect the quality of yarn
produced from such fibers

DESCRIPTION OF INVENTION
According to this invention there is provided a process for treatment of
coconut fibers which comprises in trashing the husk after removal of the nut
so as to loosen the fibers and pith, soaking the husk in water, separately the
husk from fiber characterized m applying an oil in water emulsion to the
surface of the separated fibers under ambient conditions.
The process comprises in first separating the husk from the nut, and then
treating the husk so as to loosen tag fibers and pith. The husk with fibers is;
then soaked in water. Such a step of soaking may be effected by sprinkling
water and then allowing the husk and fibers to be retained in water for a
period of 4 to 6 hours. The fibers ;are then separated from the husk by, for
example, a defiberizing machine.
As will be apparent, the step:* described here in above, avoids the
^disadvantage of pollution of backw.ibrs, which was hitherto a environmental
hazard.
Specifically, in accordance with \h;> invention, an oil in water emulsion is
applied to the surface of the separated fibers for a period of 12 to 48 hours.
Preferably, a vegetable oil is employed as a mineral oil has an odour, which
is not preferred by a worker.

The vegetable oil employed in the emulsion in the present invention is
Castor Oil as it has a high viscosity, and thereby retained in the fiber for a
longer time. Coconut Oil is another vegetable oil which could be employed
in the emulsion, but which is wot preferred as it interferes with the
subsequent stage of bleaching. The ratio of oil to water of said emulsion is
15 to 85 to 25 to 75. Further, a tracr. amount of an emulsified agent, such as
detergent, is added to the emulsion. Preferably .01 to 1 part of the emulsified
agent is added thereto. The oil on weight of coir is between 1.5 to 2%. If
more than 2% of the oil is present by weight of coir, then the fibers would be
slippery and the strength reduced.
It has been now found that if the oi. and water emulsion is allowed to remain
on the fibers for a period of 24-hrs, ihe production of the yarn in increased
by 1.3% as the fibers could be fed quicker by the worker to a spinning
machine. Further, the light fastness of the yarn is not reduced. In fact, the
treated yarn exhibited the same bleaching and dyeing property as the yarn
made from retted fibers.
The following comparative Table I reflects the parameters of the yarns
treated by the process of this invention.



WE CLAIM:
1. A process for treatment of coconut fibers which comprises in crushing the
husk after removal of the nut so as to loosen the fibers and pith, soaking
the husk in water, separately the husk from fiber characterized in applying
an oil in water emulsion to the surface of the separated, fibers under
ambient conditions wherein the ratio of oil to water in said emulsion 15 to
85 to 25 to 75.
2. The process as claimed in claim 1, wherein the fibers are treated with the
oil and water emulsion for a period for 12-48 hours.
3. The process as claimed in claim 1, wherein the oil is a vegetable oil.
4. The process as claimed in claim 3, wherein said vegetable oil is Castor
Oil.
5. The process as claimed in claim 1, wherein the oil on the weight of coir is
present in a mount of 1.5 to 2%.

6. The process as claimed in claim 3, wherein as emulsifying agent such as
a detergent is present in said emulsion.
7. The process for treatment of coconut fibers subsequently as described
and illustrated.

A process for treatment of coconut fibers which comprises in crushing the husk
after removal of the nut so as to loosen the fibers and pith, soaking the husk in
water, separately the husk from fiber characterized in applying an oil in water
emulsion to the surface of the separated, fibers under ambient conditions
wherein the ratio of oil to water in said emulsion 15 to 85 to 25 to 75.

Documents:

1177-KOL-2005-FORM 15 1.1.pdf

1177-KOL-2005-FORM 15.pdf

1177-kol-2005-granted-abstract.pdf

1177-kol-2005-granted-claims.pdf

1177-kol-2005-granted-correspondence.pdf

1177-kol-2005-granted-description (complete).pdf

1177-kol-2005-granted-examination report.pdf

1177-kol-2005-granted-form 1.pdf

1177-kol-2005-granted-form 18.pdf

1177-kol-2005-granted-form 2.pdf

1177-kol-2005-granted-form 26.pdf

1177-kol-2005-granted-form 3.pdf

1177-kol-2005-granted-reply to examination report.pdf

1177-kol-2005-granted-specification.pdf


Patent Number 228415
Indian Patent Application Number 1177/KOL/2005
PG Journal Number 06/2009
Publication Date 06-Feb-2009
Grant Date 04-Feb-2009
Date of Filing 23-Dec-2005
Name of Patentee CENTRAL COIR RESEARCH INSTITUTE
Applicant Address C/O. COIR BOARD, LOUDON STREET, KOLKATA
Inventors:
# Inventor's Name Inventor's Address
1 DR. U. S. SARMA, CENTRAL COIR RESEARCH INSTITUTE, C/O. COIR BOARD, LOUDON STREET, KOLKATA 700 017.
2 MR. P. K. RAVI CENTRAL COIR RESEARCH INSTITUTE, C/O. COIR BOARD, LOUDON STREET, KOLKATA 700 017
3 DR. A. K. MUKHERJEE CENTRAL COIR RESEARCH INSTITUTE, C/O. COIR BOARD, LOUDON STREET, KOLKATA 700 017
PCT International Classification Number C02F 3/10
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA