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Патент USA US2131814

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Oct. 4, 1938.
R. w. MONCRIEFF Ejr AL
\ 2,131,814
LIQUID TREATMENT OF YARNS
Filed Jan. 18, 1935
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RUBERT W- MON?RlEFF
FRANK B- HILL
THOMAS B FREARSON
./
men-rows
WW
A-TTORNEY;
Patented Qct.4,--193_8j
2,131,814
UNITED/STATES PATENT OFFICE"
‘LIQUID mmi?ilgifri or mans
Robert Wighton Moncrie?', Frank Brentnail
Hill, and Thomas Barnard Frearson, Spondon,
near Derby, England,
to Celanese
Corporation of America,assignors
a corporation of Del
aware
Application January 18, 1935, Serial No. 2.324
In_ Great Britain February 8, 1934
8 Claims. -(Cl. 8-154)
This invention relates to the liquid treatment rate sufficient to make up for the ?ow from the
_ of yarns, and has as its principal object to provide
,casing and to keep the spindle ?lled over the
a means for carrying out effectively‘suchtreat
ment upon yarns wound into packages.
5
length occupied by the bobbin.‘
.
ing drawing, in which
and/or-after the treatment, considerable difficul
tion of the apparatus; .
’ _
‘ments are only lightly‘twisted together.
‘
' We have, now found that uniform treatment of
yarn on a bobbin can be effected by surrounding a
'
Fig. 2 shows in section a detail of the apparatus 10 ‘
of Fig. ,1, and
tinuous ?laments, ‘and particularly if the ?la
bobbin with a casingand forcing treating liquor
'
Fig. I is a diagrammatic elevation partly in sec
is ?ne in character and where ‘it consists of vcon
through the bobbin into the casing, the casing
being maintained full during the operation and
the liquor being allowed to escape from the casing
'
cording to the invention will now be described in 5
greater ‘detail with reference to the accompany
form presents many advantages, including the
possibility of avoiding re-winding the yarn before
ties are met with in practice in effecting uniform
in treatment of the yarn, especially where the yarn
,
By way of example ‘one form of apparatus ac- ,
While the liquid treatment of yarn in package
-
Fig. 3 is a horizonta cross~section of the bobbin
illustrated in Fig. 2.
'
>
Referring to Fig. 1, the apparatus comprises a
rail'5 carrying a spindle mounting B which sup- 15
ports a spindle‘ ‘i. The spindle ‘i is inverted, the -
wharl 8 by means of which it is driven being at
its upper end just below the rail 5.
As seen in Fig. 2, the spindle ‘I is hollow, is
maintained in the casing. The whole of the yarn vclosed at the bottom by means of a plug 9, and is 20
"with a number of perforations iii. A
on the bobbin is thus subjected to the liquor under provided
knurled nut i i is provided on a threaded part l2
pressure so that not only is the yarn uniformly
'- treated along the length of the bobbin, but‘also of the spindle l, the nut ll supporting a large
throughout the thickness of the bobbin, because ?anged ‘member l3 into which ?ts a wide sleeve
the pressure maintained in the surrounding liquor or casing it which may conveniently be welded 25
by the casing precludes rapid ?ow through the thereto. A further nut IS on thethreaded por
tion 12 supports a bobbin It, a. rubber ring I‘!
outer layer of yarn.
, The bobbin is suitably perforated or slotted so being ‘interposed between the nut l5 and the bob
bin IG. Towards the upper end of the spindle 1
30 as to provide for substantially uniform distribu
there
is ?tted a further large ?ange‘ iii of the same 30
tion of the liquor introduced under pressure with
in the hollow bobbin. A lining of gauze or the size as the ?ange l3, into which the upper end of
the casing l4 ?ts. .The casing l4 and the upper
like may also be employed to assist in such dis
?ange IQ of the bobbin l6 are pressed by means
tribution.
'
I
The requisite pressure is conveniently set up by of the nuts ii and I5 against a rubber packing
20 at a slow rate so that considerable pressure is
means of centrifugal force. Thus, the bobbin may , ring 20’. Three small perforations 2| are pro- 35
be mounted on a. perforated or slotted spindle vided in the casing M, at points symmetrically
driven, by any convenient meansoat the requisite
speed. The liquor is then supplied to the interior
40 of the hollow spindle, centrifugal force driving
the liquor through the yarn on the bobbin into the
surrounding casing. When the casing becomes
full, the liquorv in it reaches considerable'pressure.
A slow rate of ?ow of. the liquor from the outer
45 casing is conveniently effected‘by ‘the provision
of ?ne perforations through which the liquor‘is
' ?ung by the rotation of the casing. These per
forations are preferably symmetrically placed
' round the casing to avoid the setting up of vibra
.50 tions, 'and have a size appropriate to the ?ow de
sired at the speed of operation employed. For
example, for operation at speeds up to say 15,000
or 16,000 revolutions per minute, two or three
holes may be used of a. diameter up to .015 inch.
65
‘Liquor is supplied to the hollow spindlev at a
disposed around it.
The hollow spindle 'l is
tapered internally, being narrower towards its
upper end than at its lower end.
'
Referring again to Fig. 1, the entire .spindle 40
assembly is surrounded by means of a guard cas
ing 23 from the bottom of which a drain 24 leads
into a drain tank 25. The upper end 26 of the
spindle 1, which is open at the top is also sur
- rounded by a guard 2'! from which a drain 28 45
leads into the drain tank 25. The liquid with
which the yarn is to be treated is supplied from a
feed tank 30 through a feed pipe 3| and valve
32 to the open upper end 26 01' the spindle ‘l.
The liquid running into the drain tank 25 is con- 50
veyed by means.’ of ‘a pump 33 and pipes 34 back
to the feed tank 30.
v ‘
>
'
The spindle ‘I, together with the bobbin l6
mounted thereon and the ?anges I 3, I 3 and the
. casing i4, is set in rotation by means of the wharl 55
2
2,131,814
8, and the liquid, with which, the space inside the
casing I4 is fed from the feed tank 30, is ?ung
, outwards under centrifugal force, issuing slowly
from the ?ne ori?ces 2!. The valve 32 is ad
justed so that, after the space within the casing
I4 has been entirely ?lled, the rate of supply of
liquid from the feed tank 30 to the interior of
the spindle ‘I is su?icient to make up the amount
of liquid issuing from the ori?ces 2|. Any excess
10 of liquid fed by the pipe 3| is ?ung out by centrif
ugal force and caught by the guard 21 from
which it drains to the tank 25. The liquid ?ung
through the ori?ces 2! is caught by the guard 23
and runs through the drain 24 also into the drain
15 tank 25 from which the liquid is returned to the
feed tank 30. By these means the liquid applied
is forced through the yarn 35 wound on the bob
bin I6, under high pressure, and at a rate which
is slow by reason of the ?neness of the ori?ces 2 I.
20 As a result, the yarn 35 is uniformly treated with
the‘ liquid throughout its entire thickness on the
30
35
40
45
50
55
60
yarn, e. g. cellulose acetate or other cellulose de
rivative yarn, and viscose, nitrocellulose, and
cuprammonium arti?cial silk. In the case of
dyeing, dyestu?’s may be employed as solutions or
dispersions, care being taken in the latter case
to see that an adequate amount of dispersing
agent is present. The invention may also be em
ployed in connection with the complete or partial
saponi?cation of cellulose acetate or other cellu
lose ester yarns, a suitable saponifying agent,
together, if desired, with a small quantity of
wetting agent being forced under pressure
through the material. For example, a solution
of caustic soda of say 2%, 5%, 15% or higher
concentration may be passed through a bobbin
of cellulose acetate yarn until the cellulose ace
tate has reached the desired degree of saponi?
cation.
‘ The invention may also be applied to the treat
ment of yarn wound in cake form, as produced
The rail 5 may conveniently serve as a support by centrifugal boxes in wet processes for the pro
for a series of spindles, all the spindles being duction of arti?cial ?laments. Thus, using the
fed, if desired, by a common feed tank 30, and method of applying pressure described above with
draining into a common drain tank 25. Uni-" reference to the drawing, the cake may be
formity of treatment of the several packages placed within a perforated shell and mounted on
simultaneously treated in one batch, and -of the the spindle 1. The shell is surrounded by the
casing l4 perforated to permit and control the
several batches successively treated may be en
sured by any convenient means, e. g. by ensuring ?ow of liquor supplied to the interior of the cake. 30
that the same quantity of liquid ?ows through In order to distribute the liquor over the inner
layers of the cake, a perforated shell similar to
each package.
the wire gauze 38 may be placed inside the cake, <
The employment of an inverted spindle 1 hav
ing a driving wharl 8 near the upper end thereof - liquor being supplied at a rate su?icient to cover
not only makes for steadier running, the greater the whole length of this inner shell. Apart from 35
part of the weight of the spindle being below the washing, bleaching, and dyeing yarn in cake
bearings which support it, but also prevents the form, this application of the invention is ad
wharl and the driving belt therefor from being vantageous in connection vwith saponifying or
splashed with the liquid issuing from the ori?ces otherwise treating stretched cellulose acetate or
2|. The tapered boring of the spindle ‘I causes otheryarns which have been collected in cen 40
the liquid initially introduced at the upper end trifugal boxes at the end of the stretching opera
26 of the spindle to be ?ung towards the bottom tion.
What we claim and desire to secure by Letters
of the spindle and ensures that the system is ?lled
Patent is:
with liquid.
1. Process for the liquid treatment of yarn in 45
The bobbin employed and illustrated in vertical
section in Fig. 2 is shown in horizontal section package form, which comprises feeding a treat
in Fig. 3. The bobbin is made throughout of ing liquid into a hollow yarn package and rap
steel, and the barrel thereof on which the yarn idly rotating said package so as to force said
35 is wound consists of a number of bars 36 of liquid through the yarn on said package by pres
triangular cross-section between which are spaces sure due to centrifugal force, said package being 60
completely immersed in treating liquid contained
31 through which the liquid is thrown by cen
trifugal action. Outside the bars 36 is wound a in a casing ‘from which said liquid is allowed to
cylinder of wire gauze 38 with which the yarn 35 issuevat a rate such that the liquid in the casing
is in direct contact. If desired, a similar cylinder is maintained under super-atmospheric pressure.
2. Processfor the liquid treatment of ‘yarn in 55
of wire gauze may be ?tted inside the hollow
spindle 1 in order that the liquid ?owing out from package form, which comprises feeding a treat
ing liquid‘into a hollow yarn package, rapidly ro
the spindle may be more evenly distributed. >
The speed of rotation of the spindle ‘I varies in tating said package so as to force said liquid
through the yarn on said package by pressure
accordance with the nature of the yarn under
going treatment and of the liquor itself, especially due to centrifugal force, said package being com 00
pletely immersed in treating liquid contained in
the viscosity of the liquor. Low-twisted continu
bobbin.
Ci
eral, the invention being particulraly suitable for
the treatment of arti?cial continuous ?lament
‘
ous ?lament yarn requires‘a greater rate of ro
a casing from which said liquid is allowed to '
tation than, yarn of higher twist, but uniform
treatment ,canébe effected even with low twist
issue at a rate such that the liquid in the casing
is maintained under a pressure substantially
65
65 continuous ?lament yarn substantially parallel ' greater than that outside the casing.
3. Process for the saponi?cation of yarn con
wound on to the bobbin. Again, the ?ner the
denier of the ?laments in such yarn the greater taining a cellulose ester while such yarn is in
package form, which comprises feeding a sa
the rate of rotation necessary. The liquor is sup
plied and the spindle ‘I kept in rotation for a.
70 period depending on the extent of treatment re
quired.
As examples of liquid treatments which may
be carried out by the method and means ac
cording to the invention may be, mentioned,
75 washing, bleaching, and dyeing of yarns in gen
ponifying liquid into a hollow package of yarn
comprising cellulose ester ?laments and rapidly 70
rotating said package so as to force said liquid
through the yarn on said package by pressure
due to centrifugal force, said package being com
pletely immersed in treating liquid contained in
a casing from which said liquid is allowed to 76
'3.
2,131,814
issue ‘at a rate such that the liquidin the casing
is maintained under a pressure substantially
greater than atmospheric.
.4. Process for the ‘dyeing of yarn in package
form, which comprises‘ feeding a dye liquor into
a hollow yarn package and rapidly rotating said
package so as to force said liquor through the
yarn on said packagev by pressure due to centrif
ugal force, said package being completely im
10 mersed in treating liquid contained in a casing
from which said liquid is allowed to issue at a
rounding the casing and adapted to catch the
liquid ?owing therefrom..
‘
7. Apparatus for the liquid treatment of yarn ‘
in package form, comprising alcasing provided
with an outlet means, means comprising a per
forated hollow spindle adapted to carrya hollow
yarn package coaxially .in said casing, driving
means for said spindle at,the upper end there
of, means for‘ feeding ‘treating liquid to the in
terior of said package, and means for rapidly 10
rotating said casing with the yarn package con
rate such that the liquid in the casing is main
tained therein, so as to force the liquid fed into
tained under a pressure substantially greater _ the-package through the yarn- on the package
' than atmospheric.
15
5. Apparatus for the liquid treatment of yarn
in package form, comprising a casing provided
with an outlet means, means for holding a hol
low yarn package ‘coaxially in said casing, means
for feeding treating liquid to the interior of said
20 package, and means for rapidly rotating said,
casing with the yarn package contained therein,
so'as to force the liquid fed into the package
through the yarn on the package under pressure
and out through said outlet means, said outlet
25 means being of such dimensions as to offer a
substantial resistance to the liquid ?ow.‘ '
6. Apparatus for the liquid treatment of yarn
i-napackage form, comprising a casing provided
with an outlet means having a cross-sectional
area not exceeding the order of 6. x 10*4 square '
centimeters, means for holding a hollow yarn
package coaxially in said casing, means for feed
ing treating liquid to the interior of said pack
age,v means for rapidly rotating'said casing with
the yarn package contained therein, so as to. '
‘Iorce'the liquid fed into the package through
the yarn on the package under pressure and
out through said outlet means, and means sur
l
under pressure and - out through said outlet
means, said outlet means being of such dimen 15
sions as to offer a substantial resistance to the
liquid ?ow.
8. Apparatus for the liquid treatment of yarn
in package form, comprising a perforated hollow
spindle, means at the upper end of said spindle 20
for rapidly rotating the same, a ?ange on said spindle near said driving means, a nut near the
lower end of said spindle adapted to force a yarn‘
package mounted on said spindle towards said
?ange, a cylindrical casing adapted to‘ surround 25
said ?ange and to ?t into said ?ange, a further
?ange adapted to support si‘d casing from be- ,
neath, a nut adapted to screw on to said spindle
and to hold said further ?ange in position, means
for feeding treating liquid to the interior of said 30
spindle, said cylindrical casing being provided
with at least one ?ne perforation such as to al
low the liquid to escape but to offer a substantial l
resistance to its ?ow.
ROBERT WIGHTON MONCRIEFF.
FRANK BRENTNALL HILL.
THOMAS BARNARD/FREARSON.
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