U.S. patent application number 09/914816 was filed with the patent office on 2002-11-28 for dyeing or washing installation for narrow textile fabrics and method for removing an excess amount of dye or washing agent.
Invention is credited to Fischer, Dieter, Stang, Hans-Peter.
Application Number | 20020174494 09/914816 |
Document ID | / |
Family ID | 7935049 |
Filed Date | 2002-11-28 |
United States Patent
Application |
20020174494 |
Kind Code |
A1 |
Stang, Hans-Peter ; et
al. |
November 28, 2002 |
Dyeing or washing installation for narrow textile fabrics and
method for removing an excess amount of dye or washing agent
Abstract
The invention relates to a dyeing or washing installation (1)
for narrow textile fabric (2), the narrow fabric (2) being passed
through a dyeing or washing liquor, followed by removal of the
excess amount. To develop further a dyeing or washing installation
(1) of the type in question advantageously with regard to the
application of dye and removal of excess amounts, it is proposed
that the narrow fabric (2) is guided along a width-adapted suction
nozzle (6), disposed downstream of the dyeing or washing
liquor.
Inventors: |
Stang, Hans-Peter;
(Bernkastel-Kues, DE) ; Fischer, Dieter;
(Bernkastel-Kues, DE) |
Correspondence
Address: |
Martin A Farber
866 United National Plaza Suite 473
New York
NY
10017
US
|
Family ID: |
7935049 |
Appl. No.: |
09/914816 |
Filed: |
December 27, 2001 |
PCT Filed: |
December 15, 2000 |
PCT NO: |
PCT/EP00/12824 |
Current U.S.
Class: |
8/151 ; 68/184;
68/19.1; 68/19.2; 68/200; 8/151.2 |
Current CPC
Class: |
D06B 15/04 20130101;
D06B 3/12 20130101 |
Class at
Publication: |
8/151 ; 8/151.2;
68/19.1; 68/19.2; 68/200; 68/184 |
International
Class: |
D06B 003/18 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 30, 1999 |
DE |
199 63 854.3 |
Claims
1. Dyeing or washing installation (1) for narrow textile fabric
(2), the narrow fabric (2) being passed through a dyeing or washing
liquor, followed by removal of the excess amount, characterized in
that the narrow fabric (2) is guided along a width-adapted suction
nozzle (6), disposed downstream of the dyeing or washing
liquor.
2. Dyeing or washing installation according to claim 1 or in
particular according thereto, characterized in that the removal of
the excess amount takes place between two passes of the narrow
fabric (2) through the dyeing or washing liquor.
3. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal is carried out at right angles to the
direction of movement (r) of the narrow fabric (2).
4. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the narrow fabric (2) consists of inelastic material.
5. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the narrow fabric (2) consists of elastic material.
6. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the narrow fabric (2) is guided along the suction nozzle
(6) by means of a screen belt (14).
7. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal takes place in the upward and/or
downward direction.
8. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal takes place horizontally and/or
vertically.
9. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal takes place at an inclination with
respect to the narrow fabric (2).
10. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that squeezing takes place upstream of suction removal.
11. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that suction removal is carried out from a plurality of narrow
fabrics (2) parallel to one another.
12. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the liquid removed by suction is passed through a water
separator (10) and fed back into the dyeing or washing liquor.
13. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal takes place through a plurality of
layers of the narrow fabric (2).
14. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal from the narrow fabric (2) is carried
out while it runs through spirally.
15. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the narrow fabric (2) is guided spirally while stretched
out on two deflecting rollers (20, 21) which are spaced apart from
each other.
16. Dyeing or washing installation according to one or more of the
preceding claims or in particular according thereto, characterized
in that the suction removal is simultaneously applied to fabric
strands produced by the spiral guidance.
17. Method of removing an excess amount of colorant or washing
agent from a narrow textile fabric (2) which is passed through a
dyeing or washing liquor in a dyeing or washing installation (1),
characterized in that the narrow fabric (2) is guided along a
width-adapted suction nozzle (6), disposed downstream of the dyeing
or washing liquor.
18. Method according to claim 17 or in particular according
thereto, characterized in that the narrow fabric (2) is passed a
number of times in succession through the dyeing or washing liquor
and subjected to suction removal by means of the suction nozzle (6)
to remove the excess amount.
Description
[0001] The invention firstly relates to a dyeing or washing
installation for narrow textile fabric, the narrow fabric being
passed through a dyeing or washing liquor, followed by removal of
the excess amount.
[0002] In the case of dyeing installations for narrow textile
fabrics, such as padding devices, it is known to provide pressing
rollers, known as padding rollers, which act mechanically,
pneumatically or else hydraulically on the narrow textile fabric,
so that the dye liquor is pressed into the narrow fabric by
squeezing and, as this happens, a removal of the excess amount
takes place at the same time. Similar devices are also known in the
case of washing installations for narrow textile fabrics in which
pressing rollers remove excess washing liquor. In particular in the
case of dyeing installations, uneven application of dye takes place
when the narrow fabric is squeezed in this way, in particular in
the region of the longitudinal side edges of the narrow fabric. The
guiding of the narrow fabric through the liquor may in this case
take place by means of deflecting rollers or conveyor belts.
[0003] With regard to the prior art described above, a series of
technical problems for the invention is seen in further developing
a dyeing or washing installation of the type in question
advantageously with regard to the application of dye and the
removal of excess amounts.
[0004] This series of problems is solved firstly and substantially
by the subject-matter of claim 1, based on the idea that the narrow
fabric is guided along a width-adapted suction nozzle, disposed
downstream of the dyeing or washing liquor. This configuration
firstly produces an improved, even application of dye to the narrow
fabric. In addition, there is improved removal of excess amounts of
dyeing or washing liquor. It is preferred for the suction nozzle to
be adapted to the width of the narrow fabric, so that uniform
suction removal takes place over the entire width of the fabric. In
particular, when the suction nozzle is disposed downstream of a
dyeing installation, a uniform application of dye in the region of
the longitudinal bordering edges of the narrow fabric can be
obtained. It is preferred for the suction removal to take place by
means of a pre-adjustable vacuum pump. As mentioned, vacuum suction
removal of this type, by means of a suction nozzle, may be disposed
downstream of a padding machine. In addition, it is also
conceivable for it to be disposed at the outlet of a steamer and of
a washing basin. The advantage of vacuum suction removal is better
dye penetration in the narrow fabric and an improved possibility
for cleaning, and as a result greater fastness. Furthermore, if a
suction nozzle according to the invention is disposed on a padding
machine, reduced consumption of dye can be obtained. If a drier is
provided directly downstream of a washing installation for narrow
textile fabrics, provision of a suction nozzle according to the
invention in between produces the advantageous effect that less
power in comparison with the conventional methods is necessary in
the region of the drier, since the suction removal from the narrow
textile fabric conducted through the washing installation results
in less residual moisture than in the case of the conventional
squeezing method. It proves to be particularly advantageous for the
negative pressure at the outlet of the suction nozzle to be
measured and kept constant at a preset value. Furthermore, in the
case of a dyeing or washing installation in which the narrow fabric
is passed through the dyeing or washing liquor in a number of
passes, it is provided that the removal of the excess amount takes
place between two passes of the narrow fabric through the dyeing or
washing liquor. It is preferred in this case that the narrow fabric
is guided along a suction nozzle after each pass. In a further
development of the subject-matter of the invention, it is provided
that the suction removal is carried out at right angles to the
direction of movement of the narrow fabric. Furthermore, it proves
to be advantageous that the width of the suction nozzle can be set
according to the width of the narrow fabric in question. The
suction removal according to the invention is conceivable on the
one hand for inelastic narrow fabric. In addition, it is also
possible for the narrow fabric to consist of elastic material. To
counteract irregular dyeing of such material caused by stretching
of the elastic fabrics, it is provided that the narrow fabric is
guided along the suction nozzle by means of a screen belt. This
screen belt serves in the region of the suction nozzle as a
support, it being preferred for motor-driven circulating endless
screen belts to be provided. Furthermore, it is proposed for the
suction removal to take place in the upward and/or downward
direction. This configuration allows suction removal to be carried
out on one side and on both sides of the narrow textile fabric, it
also being possible for the suction nozzle to be disposed
vertically and horizontally. In addition, a design in which the
suction removal takes place at an inclination with respect to the
narrow fabric is also conceivable. In the case of suction removal
from both sides of elastic narrow fabric, it is further preferred
for a screen belt to be associated with each suction nozzle, a
circulating endless screen belt being preferred, so that the narrow
fabric is prevented from stretching both on the upper side and on
the underside by means of the screen belt. Moreover, there is the
possibility of squeezing taking place upstream of suction removal,
so that, for example downstream of a liquor application tank, the
narrow fabric is firstly squeezed in a known way and subsequently
guided along a suction nozzle, producing a uniform distribution of
the dye particles within the fabric. A configuration in which
suction removal is carried out from a plurality of narrow fabrics
parallel to one another proves to be particularly advantageous. In
this case, a width-adapted suction nozzle may be associated with
each narrow fabric, on one or both sides. However, it is also
conceivable to dispose a suction nozzle extending over the entire
width on one or both sides of the parallel-running narrow fabrics,
covering or directing units being provided between the individual
fabrics, on the one hand serving as guidance for the fabric and on
the other hand confining the suction effect exclusively to the
individual fabrics, so that controlled suction removal from the
individual fabrics is obtained even in their side edge regions. To
reuse excess amounts of dyeing or washing liquor, it is provided
that the liquid removed by suction is passed through a water
separator and fed back into the dyeing or washing liquor.
Furthermore, the narrow fabric may undergo suction removal while
running out straight. In addition, the suction removal may also
take place through a plurality of layers of the narrow fabric. In
an advantageous way, it is provided here that the suction removal
from the narrow fabric is carried out while it runs through
spirally, to provide a further increase in dye penetration and dye
uniformity and also fastness effects. In this respect, it is
proposed that the narrow fabric be guided spirally while stretched
out on two guiding rollers which are spaced apart from each other,
for the narrow fabric to pass a number of times through the dyeing
or washing liquor. According to the invention, it is proposed for
the suction removal to be simultaneously applied to fabric strands
produced by the spiral guidance. The suction nozzle is accordingly
not adapted to the individual narrow fabric width. Rather, the
suction nozzle width corresponds to the entire widthwise extent of
the fabric strands within the spiral guidance.
[0005] The invention also relates to a method of removing an excess
amount of colorant or detergent from a narrow textile fabric which
is conducted through a dyeing or washing liquor in a dyeing or
washing installation. To provide a method which is improved
advantageously with regard to the removal of excess amounts, it is
provided that the narrow fabric is guided along a width-adapted
suction nozzle, disposed downstream of the dyeing or washing
liquor. This method according to the invention firstly produces an
improved, even application of dye to the narrow fabric. In
addition, there is improved removal of excess amounts of dyeing or
washing liquor, it being preferred for the suction nozzle to be
adapted to the width of the narrow fabric, so that uniform suction
removal takes place over the entire width of the narrow fabric. In
this respect, it is further proposed for the narrow fabric to be
passed a number of times in succession through the dyeing or
washing liquor and subjected to suction removal by means of the
suction nozzle to remove the excess amount. With the narrow fabric
running through the dyeing or washing liquor spirally in this way,
suction removal of the excess amount takes place after each pass
through the dyeing or washing liquor, which, in particular in a
dyeing installation, leads to an increase in dye penetration and
dye uniformity.
[0006] The invention is explained in more detail below with
reference to the attached drawing, which merely represents a number
of exemplary embodiments and in which:
[0007] FIG. 1 shows a schematic representation of a dyeing
installation for narrow textile fabric with a downstream suction
removal device;
[0008] FIG. 2 shows a perspective representation of a suction
nozzle with narrow fabric guided along it;
[0009] FIG. 3 shows a schematic representation of a second
embodiment with a plurality of narrow fabrics running parallel to
one another, which are acted upon by a common suction nozzle;
[0010] FIG. 4 shows a schematic representation of a further
embodiment for suction removal from elastic narrow fabric;
[0011] FIG. 5 shows a representation corresponding to FIG. 1, but
concerning a further embodiment;
[0012] FIG. 6 shows a schematic representation of a suction removal
device with the narrow fabric running through spirally, in side
view;
[0013] FIG. 7 shows the schematic front view relating to FIG.
6.
[0014] A dyeing installation 1 for a narrow textile fabric 2 is
represented and described, initially with respect to FIG. 1.
[0015] It is preferred for the said narrow textile fabric to be
conducted through the installation in a continuous process, the
narrow fabric 2 firstly being immersed through a dyeing band 3--a
padding machine--and then, if appropriate, passed on for further
treatment. The running-through direction is indicated in FIG. 1 by
the arrow r.
[0016] According to the invention, provided downstream of the
dyeing installation 1 in the running-through direction is a suction
removal device 4, along which the narrow textile fabric 2 is guided
after running around deflecting rollers 5 associated with the
dyeing installation 1.
[0017] In the exemplary embodiment represented, the suction removal
device 4 has on the underside of a narrow textile fabric 2 a
suction nozzle 6, the width of the open nozzle mouth 7, measured
transversely with respect to the running-through direction r, being
adapted to the width of the narrow fabric 2 to undergo suction
removal (cf. FIG. 2). In this case, the suction nozzle 6 or its
nozzle mouth 7 may have a fixed width. A nozzle width which can be
adapted to the width of the narrow fabric by adjustment is also
conceivable, however.
[0018] The suction removal takes place at right angles to the
direction of movement r of the narrow fabric 2, the suction nozzle
6 being positioned in the exemplary embodiment represented
underneath the narrow fabric 2, between two rollers 8 supporting
the narrow fabric 2. Alternatively, suction removal from the narrow
fabric 2 may also take place from the upper side (see dash-dotted
representation in FIG. 1). Furthermore, a combined upper and lower
suction removal may also be provided, it being preferred in the
case of such a configuration for the suction nozzles 6 to be
disposed offset in relation to one another in the running-through
direction r, to prevent one influencing the other in terms of the
suction power.
[0019] The suction removal takes place by means of a presettable
vacuum pump 9, the negative pressure being measured at the outlet
of the suction nozzle 6, i.e. in the region of the nozzle mouth 7,
allowing this preset negative pressure to be kept constant.
[0020] Moreover, a separator 10 is provided, by means of which
entrained liquid--here dyeing liquor--can be separated out from the
air sucked in and can be fed back to the dyeing-bath 3 via a pump
11.
[0021] In the case in which it is associated with a dyeing
installation 1, the way in which a suction removal device 4 is
disposed according to the invention ensures an even application of
dye to the narrow fabric 2, in particular in the region of the
longitudinal bordering edges 12 of the narrow fabric 2.
Furthermore, this produces improved dye penetration in the narrow
fabric 2 and also an improved possibility for cleaning and,
resulting from this, greater fastness effects. Moreover, a lower
consumption of dye can be advantageously obtained.
[0022] With the suction removal device 4 disposed downstream of a
washing installation, the advantageous effect is obtained that less
power is necessary for drying the narrow fabric 2, as a result of
the lower residual moisture.
[0023] FIG. 3 shows in a further embodiment a schematic
representation of a detail of a device for suction removal from a
plurality of narrow fabrics 2 running parallel to one another. In
the exemplary embodiment represented, a suction nozzle 6 extending
over the entire width of the narrow fabrics 2 is provided on the
underside of the three fabrics 2 running parallel to one another,
covering units 13 laterally guiding the said fabrics being provided
between the individual fabrics 2. The said covering units have the
effect at the same time of confining the suction effect exclusively
to the individual fabrics 2.
[0024] As shown, here it is also possible for a suction nozzle 6 to
be provided both on the underside and on the upper side of the
narrow fabric 2, and in addition on both sides too (see dash-dotted
representation in FIG. 3).
[0025] To counteract stretching of elastic narrow fabric 2, which
would lead to irregular dyeing effects, a circulating endless
screen belt 14 is provided according to the further exemplary
embodiment represented in FIG. 4, the said belt being motor-driven
and transporting the narrow elastic fabric 2 over the suction
nozzle 6. The suction removal takes place in this case directly
underneath the portion of the belt 14 supporting the narrow fabric
2.
[0026] In a way corresponding to the exemplary embodiments
described above, it is similarly alternatively possible here for
suction removal to take place on the upper side and additionally on
both sides too, here again a screen belt 14 associated with the
upper suction nozzle 6 being provided for stabilizing the narrow
fabric 2 (cf. dash-dotted representation in FIG. 4).
[0027] As a further alternative, according to FIG. 5, squeezing of
the narrow fabric 2 may take place upstream of suction removal,
pressing rollers 15 being provided for this purpose in the
customary way in the region of the dyeing installation 1. This
combined treatment of the narrow fabric 2 also contributes to the
uniform distribution of the dye particles within the fabric.
[0028] The narrow fabric 2 may undergo suction removal while
running out straight. In addition, however, this may also be
performed while it is running spirally, which is schematically
represented in FIGS. 6 and 7. This further increases the dye
penetration and dye uniformity and also the fastness effects, it
being possible for suction removal from the narrow fabric to take
place through a plurality of layers of the narrow fabric 2 if it
runs through spirally.
[0029] For the spiral running of the narrow fabric 2 through a
dyeing band 3 or else a washing bath, the narrow fabric 2 is
stretched and guided on two deflecting rollers 20, 21 spaced apart
from each other, the spiral guidance producing a plurality of
fabric strands. The removal of the excess amount takes place in
this case between two passes of the narrow fabric 2 through the
dyeing bath 3, a suction nozzle 6 being provided in the exemplary
embodiment represented, the fabric strands produced by the spiral
guidance being simultaneously acted upon and subjected to suction
removal by the said nozzle. Consequently, the narrow fabric is
passed a number of times in succession through the dyeing liquor
(or washing liquor) and subjected to suction removal by means of
the suction nozzle 6 for removal of the excess amount.
[0030] With the narrow fabric 2 running through spirally in such a
way, it is also possible for suction removal to take place on both
sides of the said fabric, for which purpose a second suction nozzle
6, offset in height with respect to the first nozzle and
represented in the drawings by dash-dotted lines, is provided on
the inner side of the fabric strands.
[0031] In this exemplary embodiment, the width of the suction
nozzle 6 is adapted approximately to the width of the deflecting
rollers 20, 21 around which the narrow fabric 2 passes in a spiral
manner.
[0032] This configuration produces increased dye penetration and
dye uniformity of the narrow fabric 2.
[0033] All features disclosed are (in themselves) pertinent to the
invention. The disclosure contained in the associated/attached
priority documents (copy of the prior application) is hereby fully
incorporated in the disclosure of the application, including for
the purpose of incorporating features of these documents in claims
of the present application.
* * * * *