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Патент USA US2130570

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Patented Sept-. 20, 1938
2,130,510
PATENT OFFICE
uNiTEo - srATEs
_ 2,130,570
jPRocEss-Fon FULLING on FELT'ING wool.
on
1mm
.
>
'
I Anton Volz, Ludwigshalen-on-the-Rhine, Cer
‘
many, assignor, by mesne assignments, to‘ Hall
_ Laboratories Inc., Pittsburgh, Pa.
‘
No Drawing. Application July 27, 1936, Serial
‘ No.’ 92,923.‘
In Germany August 1, 1935 '
'
9 Claims:~ (CI. 26-19)
The working up of wool and hair to a com-‘ without alkali, and in fact in alkaline, neutral
pact felted layer is e?ectedby means of fulling and acid medium.
.
or milling operations.
'
~
Example of fullingpr milling in the greasy or
The milling or fulling is carried out with me
"
»5 chanical treatment of the material being felted.
dirty. condition
y’
.
'
, if- necessary in the hot, in alkaline or acid fulling
Two ‘pieces of goods weighing altogether 50
bath. Alkaline fulling agents~ heretofore have
‘kg. are introduced on to themilling cylinder and,
corresponding to the dirt content, soda lye of 2°
been prepared with addition of alkalies, such as
Baumé, which contains in addition 10 g‘. sodium
hexametaphosphate and 5 g. sodium p'yrophos i0.
phate per litre, is poured on. .A strong froth im
soda and potash, and acid fullingagents with ad
.lo dition of inorganic and organic acids.
'
The employment of these fulling agents‘ re
quires special experience and very easily leads to
mediately. forms and the goods begin to feltuni
a mechanical‘ and chemicalinjury .of the mate
formly.
~
-
rial being fulled, particularly when these fulling- ‘ _, Example of the falling or milling ofpre-uxrshed
l5 agents are employed in concentrations which
yield an optimum fulling e?‘ect. ' _
a
_
goods
The goods are washed at 40° C. with 2-3g. per
l
The surprising observation has now':been-made
that by means of water-soluble salts of those ~ litre-of calcined soda and l g.- per litre of‘a mix
ture of sodium hexametaphosphate and sodium
pyrophosphate. The washing takes about 1/2 hour
phosphoric acids which are poorer in water than >
20 orthophosphoric acid, that is to say, contain
less constitutional water than orthophosphoric
and then ‘the goods are rinsed. ~ The material is
acids (such as pyro- and meta-phosphoric acids),
then treated on the fulling qr milling machine
1 Y
I
a substantial improvement in the fulling action with a sodium pyrophosphate solution containing
is produced, and in fact both in thetcase of fulling 40 g. per litre, the quantity being such‘that the
'
25
25 in the greasy or dirty condition as well asin the \ goods [do not become too wet.
Instead‘ of sodium pyrophosphate, poly-phos
case of neutral to alkaline fulling of pro-washed
goods and also in the case of acid ‘fulling of pre- , phates or mixtures of sodium hexametaphosphate
with soapior with acids can, also be used, and in
washed goods.
,
\
' This improvement is a speci?c enhancement of fact ‘in concentrations of 2-100 g. per litre of
30
30 the fulling action with maintenance of the usual
After all fulllng or milling rinsing is effected, if
additions at the same time which brings about a
desired with addition of 1 g. per litre of a mixture
?ner and‘ more compact felt formation and a bet
ter removal of the fat substances and dirt from of sodium hexametaphosphate with sodium pyro
liquor.
‘
I - the goods.
'
‘_
'
_ time, with lower alkalinity, that is to say ‘with’
45
-
"
I
t
\
,
‘
1wse.
. The pre-cleansed goods are soaked in a 5%
particularly'necessary to avoid these disturbing
The above-mentioned phosphates oil’er the ad
vantage that a better felt is produced in a shorter‘
‘
Example for acid falling
solution of a mixture of acid pyrophosphate and
metaphosphate, (pH 4.04) and fulled on the ma
metals or their carbonates or fatty acid salts
settling in the goods.
g‘
phosphate.
This better fulling action is assistedv ‘
_ 35 by the lime-binding, magnesia-binding and iron
'
binding action of anhydrous phosphates, it being’
40
'
‘
chine.
‘
o
'
Example for neutral falling
The pre-cleansed goods are fulled on) the ma
chine with an 8% solution of a mixture of tetra
maximum ‘preservation of’ the ?bres and-best sodium'pyrophosphate
and metaphosphate which
maintenance of the weight. , '
The goods run more easily in the presence oi’ '
- phosphate solutions and are softer and more ex~
tensible under the fulling or milling members and
mechanically are impaired to a considerably less
I 50 extent; more particularly the felting in of fulling ‘
marks is avoided. Fats which are dlmcult to.
has been adjusted to pH 7.0, so much oi’ this
solution being poured on to the goods that the
later proceeds sumciently moist, in general twice
‘to three times the weight of the goods being used. _
Example ior'alkazme jullino with agents Mitch
'
'
promote felting
'
'
’ vsaponify are saponified more rapidly so that the
The carded yarn goods oiled with'oleln are
additional addition of soap can be dispensed with. - treated, per bank, with 2 buckets (=20 litres) 01'
Pre-washed goods can be fulled or milled with a solution of 15-20 g. per litre of soda and 5-10 3.
55v suitable phosphate mixtures without soap and 'v per litre of sodium polyphosphate (melon).- v55
‘ 2
whereupon the goods are fulled as usual until they
show the requisite contraction in width and
length.
'
3. 'lhemethodotfullingorfeltingwoolorhair
inalkalinqneutraloracidmediumwhichcm
sistsinunploylngasmllingagentawater-sol
If a material is lulled for 30 minutes at 25' on
the machine in a 2.5% fulling solution which
uhle
contains
1. Soda (pH=l1.6)
in alkaline, neutral'or acid medium which con
4. 'lhemethodotfullingorfelting woolorhair
2. Neutral pyrophosphate (pH=9.6)
3. A mixture of pyrophosphate and meta
10
phosphate (pH=8.8)
4. Metaphosphate (pH=6.65)
together with a water-soluble
ta.
slstsinemployingasiullingaxentamixtureot
alkalimetalhenmetateandsoap.
5. The‘method offullingorfelting wool orhair 10
in alkalinei neutral or acid medium which con
sists in employing as fulling agent a mixture of
-
5. A mixture of acid pyrophosphate
alkali metal hemmetaphosphate and acid.
metaphosphate (pH='4.04)
5. The method of fulling or felting wool or hair
6. Polyphosphate (pH=7.5)
' -in alkaline, neutral or acid medium which con
then in the case of the substance fulled with soda
sistsini'ullingthesaid material with the aid oi’
a pronounced streak formation occurs and the
at ‘least one water-soluble salt of a phosphoric
initial fulling is interior. -The initial fulling in
acid containing less constitutional water than
the case of all anhydrous phosphates is uniform
20 and the fulled product oi’ a very ?ne full feel.
The use of these salts as fulling agents aifords
the further advantage that with them both alka
line, neutral as well as acid fulling baths can_be
prepared and that also in addition the pH value
can be varied during the fulling within the wide
limits. As a result it is possible to take into ac
count to a maximum degree the preservation or
protection of the ?bre and colour.
When using these salts known agents which
30 promote the formation of felt and which do not
orthophosphorlc acid, and rinsing the iulled
goods in water containing a small quantity of a1
kall metal hexametaphosphate and alkali metal
BR0131105131181!!
7. ‘Use method 01' fulling or felting wool or hair
in alkaline, neutral or acid medium which con
sists in employing as fulling agent at least one
water-soluble salt of a phosphoric acid contain
ing less constitutional water than orthophos
phoric acid in conjunction with other known
agents which promote felting.
8. The method of fulling or felting wool or hair 30
impair the ?bre can ‘be employed as well in addi
which consists in treating the material with soda
tion.
What I claim is:
lye containing a small amount of alkali metal
hemmetaphosphate and alkali metal pyrophos
1. ;[‘he method of fulling or felting wool or
phate.
'
‘
35 hair in alkaline, neutral or acid medium which ’ ~ 9. The method of tulling or felting wool or hair
consists in employing as fulling agent at least one consisting in washing the material with an aque~
water-soluble salt of a phosphoric acid contain
ous solution containing calcined soda, alkali metal
ing less water than orthophosphoric acid.
'
2. The method of fulling or felting wool or
40 hair in alkaline, neutralv or~acid medium which
consists in employing as fulling agent a mixture
of alkali metal hexametaphosphate an alkali
metal pyrophosphate.
hexametaphosphate and alkali metal pyrophos
phate, and then fulling it with a solution contain
ing' alkali metal pymphosphate.
ANTON VOLZ'.
40
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