Title of Invention

APPARATUS FOR MELT SPINNING AND COOLING

Abstract An apparatus for melt spinning and cooling a plurality of synthetic filaments is described, which comprises a spinning device and a cooling device, with the spinning device including at least one spinneret for extruding the filaments. For cooling the freshly extruded filaments, a cooling shaft accommodates a screen cylinder with a gas-permeable casing downstream of the spinneret- Associated to the screen cylinder is a U-shaped baffle plate, which surrounds the casing in part and forms an air inflow opening on one side. The air inflow opening connects to a cooling flow generator, which blows into the air inflow opening cooling air that flows transversely to the direction of the advancing filaments. To distribute the cooling air on the circumference of the screen cylinder as evenly as possible, the invention provides for arranging in the air inflow opening a flow divider, which is used to divide the cooling air entering the air inflow opening before impacting upon the screen cylinder.
Full Text APPARATUS FOR MELT SPINNING AND COOLING
The invention relates to an apparatus for melt spinning and cooling a plurality of synthetic filaments as defined in the preamble of claim 1.
In the production of synthetic filament fibers, in particular synthetic multifilarnent yarns for textile applications, a plurality of fine filament strands are extruded from a plastic melt through a spinneret. To this end, the spinnerets comprise in their underside a plurality of spin holes in a defined arrangement and distribution. After extruding, the freshly spun filament strands are cooled for the purposes of solidifying. After cooling, a plurality of filament strands, normally all those extruded through the spinneret, are combined to a multifilament yarn, which is wound after further treatments.to a package at the end of the production process. Depending on the case of application, it is thus possible to produce very fine or coarser yarns. The total denier of the yarn results from the number of the individual filament strands as well as the denier of the filaments. The quality of the yarn is determined by the interaction of the filament properties. It is therefore known that for the production of a high-quality yarn, each individual filament strand must undergo as much as possible an identical treatment to obtain same structures and cross sections.

Directly after extruding, the formation of the filament strands is substantially determined by cooling. Thus, it is known that the so-called crossflow quench, wherein a cooling air stream is generated that is oriented transversely to the direction of the advancing filament strands, and penetrates the filament bundle, is suited only for filament strands with a spun denier greater than 1 dpf (dtex per filament). In the case of finer filament strands, one obtains on the one hand a greater filament density within the filament bundle, which leads to an uneven penetration of the cooling air stream. On the other hand, caused by the crossflow quench, a great deflection of the filament bundle is generated, which leads to unacceptable denier fluctuations in the filament strands. Therefore, after extruding, the filaments with a spun denier of To obtain in the case of a crossflow quench filament strands that are formed as evenly as possible, US 3,067,458 discloses a device which is provided directly downstream of a spinneret in a cooling shaft with a screen cylinder for guiding the freshly extruded

filament strands. The screen cylinder comprises a gas-permeable casing. Arranged in spaced relationship with a gas-permeable baffle plate is a U-shaped guide plate, which has an opening toward one side of the screen cylinder. The opening connects to a cooling stream generator, which blows a cooling air stream into the opening transversely to the screen cylinder. Downstream of the screen cylinder, the filament strands advance into a cooling shaft, in which a transversely directed cooling air flow is generated for further cooling the filament strands.
With the use of the known device, the filament strands undergo a gentle cooling directly after extruding, so that an initial solidification of the surface layers of the filament strands sets in, before a final cooling occurs by the transversely directed cooling air stream. While this device made it possible to achieve a slight improvement in the production of fine filament strands, an irregular flow toward the filament strands was found inside the screen cylinder, which led to denier fluctuations in the filaments.
US 4,529,368 discloses a further apparatus for melt spinning and cooling a plurality of filament strands, in which the filament strands are cooled by a crossflow quench. For an initial solidification, a screen cylinder with a tube section attached in facing relationship with the spinneret is arranged in the cooling shaft downstream of the spinneret- On the side of the screen cylinder, an air diffusion wall is provided, which extends over the entire length of the cooling shaft and connects to a pressure chamber. The air diffusion wall generates a transversely directed cooling air stream, which is directly active on the

filament strands in the lower region, and transversely acts upon the screen cylinder in the upper region. However, with the use of the transversely directed air in the screen cylinder, there basically exists the problem that in the case of a high filament density of the filament bundle, the filament strands advancing farthest removed.from the air diffusion wall cannot be adequately precooled. With that, it is not possible to attain high evennesses, in particular in the case of fine filament strands.
It is therefore an object of the invention to further develop an apparatus of the generic type for melt spinning and cooling a plurality of synthetic filaments in such a manner that it becomes possible to cool in particular filament strands of a denier range from 0.2 to 1 dpf uniformly by a transversely directed cooling air stream.
In accordance with the invention, this object is accomplished by an apparatus comprising the features of claim 1.
Advantageous further developments of the invention are defined by the features and feature combinations of the dependent claims.
The invention distinguishes itself in that a cooling air stream flowing transversely to the direction of the advancing filaments is advantageously supplied to a screen cylinder such that the cooling air enters substantially evenly on the circumference of the screen cylinder. A flow divider arranged in the air inlet opening prevents air from flowing directly toward the screen cylinder. The cooling air stream is largely blown into a space between the casing of the screen cylinder and a baffle plate, so as to generate a flow about the screen cylinder. This results in a uniform

distribution of the cooling air over the entire casing of the screen cylinder, so that the cooling air is able to enter the screen cylinder uniformly through the gas-permeable casing and to impact upon the filaments. The distribution of the cooling air may occur by one flow divider or by a plurality of interacting flow dividers.
The flow divider can advantageously be
constructed by the arrangement of a plurality of guide plates, which are preferably formed by two individual plates arranged relative to each other at an angle, which are held in the center of the air inlet opening, and which largely extend over the length of the screen cylinder. As a result, a gentle division of the cooling air stream entering through the air inlet opening is generated without forming significant turbulences. The guide plates could be made adjustable relative to one another for varying the inflow angle. In addition, it is possible to form different entry cross sections between each of the ends of the guide plates and the baffle plate by selecting the width of the guide plates, which influences in particular the flow velocity in the space between the casing of the screen cylinder and the baffle plate. However, it is also possible to construct the flow divider from a shaped plate, which is held in position in the air inflow opening.
Preferably, the flow divider has an air passageway in its center, through which a portion of the cooling air is directly guided to the screen cylinder. With that, it is possible to generate a further partial air stream, which enables a further improvement in the evenness of the cooling air distribution. In particular when the cooling air that is directed by the flow divider into the interspace has

low flow velocities, it is possible to achieve in a further development an advantageous uniform distribution over the casing of the screen cylinder. However, the air passageway may also be formed by a plurality of separate openings or by a perforated sheet metal s trueture.
The apparatus of the invention can be used for different methods of cooling filament strands. For example, methods are known, wherein a further cooling of the filament strands occurs by a transversely directed cooling air stream or by a cooling air stream that flows in the direction of the advancing filaments. In the case that the filament strands are cooled in the further process by a transversely directed cooling air stream, it will be especially advantageous to use the further development of the invention, wherein the screen cylinder connects on its outlet side to the cooling shaft, which comprises in spaced relationship with the screen cylinder a lower outlet for the filament strands.
In the case that a cooling air stream generated in the direction of the advancing filaments is used for further cooling the filament strands, the further development of the invention is preferred, wherein the screen cylinder connects on the outlet side to a cooling tube, which comprises a funnel-shaped inlet for narrowing the free flow cross section. With that, it is possible to achieve a special guidance and cooling of the filament strands, which leads to higher production speeds and production outputs.
To generate the transversely directed cooling air stream, the cooling stream generator is preferably formed by a pressure chamber and a blower connected thereto. In this case, the pressure chamber may

directly connect to the air inflow opening or indirectly via an air diffusion wall, which advantageously extends over the entire length of the cooling shaft and blows a transversely directed cooling air stream into the cooling shaft and the air inflow opening.
To prevent external air influences when after being extruded, the filament strands enter the screen cylinder, it is advantageous to provide on the inlet side of the screen cylinder a seal arrangement, which permits connecting the screen cylinder sealably to a spin beam of the spinneret.
Since in practice devices of this type are used for simultaneously producing a plurality of filament bundles, it is advantageous to mount the screen cylinders associated to the filament bundles together with the baffle plates to a support in the cooling shaft. In this connection, the support is preferably connected for vertical adjustment or exchange to the cooling shaft, so that for purposes of performing maintenance work on the spinnerets, it will be easy to remove the screen cylinders from the spin beam of the spinnerets.
According to a further development of the invention, the support may selectively be equipped with additional cooling tubes, which each connect to the outlet ends of the screen cylinders. With that, it becomes possible to use different methods for cooling the filament strands of an apparatus.
To this end, the cooling shaft comprises on the side facing the air inflow openings an exchangeable air diffusion wall that connects to the pressure chamber. The air diffusion wall may be exchanged for a cassette-type wall, which has in the region of the air

inflow opening a cooling air opening that directly connects to the pressure chamber. With that, it is possible to use the apparatus of the invention selectively for different cooling methods.
In the following, further advantages of the invention are described in greater detail by means of some embodiments of the apparatus according to the invention with reference to the attached drawings, in which:
Figures 1-3 schematically illustrate a first embodiment of the apparatus according to the invention for cooling a filament bundle;
Figure 4 schematically illustrates a further embodiment of the apparatus according to the invention for cooling a filament bundle; and
Figures 5-6 schematically illustrate further embodiments of the apparatus according to the invention for cooling a plurality of filament bundles.
Figures 1-3 illustrate various views of a first embodiment of the apparatus according to the invention for cooling a filament bundle. Figure 1 is a longitudinally sectioned view; Figure 2 is a cross sectional view, and Figure 3 is a fragmentary view of an air inflow opening. Unless specific reference is made to one of the Figures, the following description will apply to all Figures.
The embodiment comprises a spinning device 1 and a cooling device 2. The spinning device 1 includes a spinneret 3, which is mounted in a heatable spin beam. On its upper side, the spinneret 3 connects to a melt line 5. The melt line 5 leads to a spin pump not shown. The underside of the spinneret 3 contains a plurality of spin holes (not shown) for extruding a plurality of fine filament strands 16.

Downstream of the spinning device 1 is a cooling device 2. The cooling device 2 includes a cooling shaft 6 having the shape of a rectangular solid. On one side of the cooling shaft 6, a pressure chamber 7 extends, which connects to a blower 9. The pressure 7 connects via an air diffusion wall 8 to the cooling shaft 6. The air diffusion wall 8 is made gas-permeable, so that a cooling medium, preferably cooling air, which is supplied to the pressure chamber 7 by means of the blower 9, flows through the air diffusion wall 8 into the cooling shaft 6 transversely to the direction of the advancing filaments. The upper region of the cooling shaft 6 accommodates directly downstream of the spin beam 4 a screen cylinder 10 with a gas permeable casing 19. The casing 19 could be formed by a perforated sheet metal plate, a sintered metal, or a wire mesh. Arranged in spaced relationship with the casing 19 of the screen cylinder 10 is a U-shaped baffle plate 11. In this arrangement, the free legs of the baffle plate 11 point in the direction of the air diffusion wall 8, and form between them an air inflow opening 25. The screen cylinder 10 is partially surrounded by the baffle plate 11, with a semicircular space 20 being formed between the screen cylinder 10 and the baffle plate 11. The baffle plate which may be formed of one or more bent sheet metal plates, extends over the entire circumferential surface of the screen cylinder 10, so that the free legs of the baffle plate form in spaced relationship with the screen cylinder 10 the air inflow opening 25 in direct facing relationship with the air diffusion wall 8.
Arranged between the free legs of the baffle plate 11 is a flow divider 12. In the present embodiment, the flow divider 12 is formed by two guide

plates 13.1 and 13.2 that are arranged relative to each, other at an angle. The guide plates 13.1 and 13.2 extend over the entire height of the screen cylinder 10 and thus over the entire height of the baffle plate 11.
As shown in Figure 3, the flow divider 12 subdivides the air inflow opening 25 into a total of three partial openings. Between the free legs of the baffle plate 11 and the free longitudinal sides of the guide plates 13.1 and 13.2, partial air inflow openings are created, through which the cooling air flow directly enters the interspace 20. A further partial air inflow opening is formed in the flow divider 12 by a passageway 26 in the center. With that, the flow divider 12 arranged in the air inflow opening 25 divides and guides the cooling air stream entering through air inflow opening 25 in three partial streams.
The screen cylinder 10, the baffle plate 11, and the flow divider 12 are jointly mounted and secured to a support 15. To this end, the support 15 connects to the walls of the cooling shaft 6 by means of mounting devices not shown.
As shown in Figure 1, the support 15 is secured to the underside of the spin beam 4. Between the spin beam 4 and the support 15, the upper side of the screen cylinder 10 mounts a seal arrangement 14, which enables a substantially pressure-tight connection of the screen cylinder to the spinneret 3. To this end, the screen cylinder 10 has a diameter, which preferably is the same as or larger than the diameter of the spinneret 3.
The lower region of the cooling shaft 6 includes a yarn outlet 17. Associated to the yarn outlet 17 is a yarn guide 18, which preferably interacts with a yarn lubrication device (not shown) .

Advantageously however, such arrangements can also be integrated into the cooling shaft 6. To this end, it would be possible to construct the air diffusion wall 8 as a closed wall preferably in the lower region of the cooling shaft 6.
In the embodiment of the apparatus according to the invention as shown in Figures 1-3, a polymer melt is supplied to the spinneret 3 by a spin pump not shown. In the spinneret 3, the melt is filtered and extruded on the underside through a plurality of spin holes to a plurality of filament strands 16. Thus, it is possible to extrude 200 to 250 filaments at the same time. Preferably, the spun denier is in a range from 0.2 dpf to 1 dpf. For cooling the freshly extruded filament strands, a cooling air stream is blown from the pressure chamber 7 via the air diffusion wall 8 into the cooling shaft 6. In the upper region of the cooling shaft 6, a portion of the cooling air directly enters the air inflow opening 25. The flow divider 12 arranged in the air inflow opening 25 divides the entering cooling air stream into three individual partial streams, and guides a portion thereof directly toward the casing 19 of the screen cylinder 10, and a greater portion thereof into the space 20 between the casing 19 and the baffle plate 11. The casing 19 of the screen cylinder is preferably formed by a wire mesh, so that the cooling air stream is allowed to enter and penetrate the casing 19 of the screen cylinder uniformly. The cooling air entering the screen cylinder 10 penetrates the filament bundle, and leads to an initial cooling of the filament strands 16. In the further course of the process, the filament strands 16 enter a free space of the cooling shaft 6 by being withdrawn by a godet not shown. In the free space, the

filament strands 16 are further cooled directly by the cooling air stream flowing from the air diffusion wall 8 transversely to the direction of the advancing filaments.
In the production of a yarn with a total denier of 75 and 144 filaments, it was possible to obtain a very high yarn evenness at a production speed of 2,500 m/min. In comparison with known crossflow quenches, it was possible to improve the evenness by more than 3 0%.
.Thus, the apparatus of the invention is especially suited for cooling a plurality of fine filament strands.
Figure 4 is a longitudinally sectioned view of a further embodiment of the invention. For a description in greater detail, components of like function have been provided with identical numerals.
The embodiment of Figure 4 comprises a
spinning device 1 and a cooling device 2. The spinning device 1 is identical with the foregoing embodiment, so that the foregoing description is herewith incorporated by reference.
The cooling device consists of a cooling shaft 6, in which a screen cylinder 10 is directly mounted to the underside of the spin beam 4. The screen cylinder 10 comprises a gas-permeable casing 19, preferably of a wire mesh or a screen. Associated to the screen cylinder 10 is a baffle plate 11 as well as a flow divider 12. The construction of the screen cylinder 10 is identical with the foregoing embodiment, so that at this point the foregoing description is herewith incorporated by reference.
The air inflow opening 25 which is formed by the baffle plate 11 connects directly to a pressure

chamber 7. The pressure chamber 7 connects to a blower 9.
Connected to the outlet end of the cooling shaft 6 is a cooling tube 21. The cooling tube 21 has a funnel-shaped inlet 22, which connects inside the cooling shaft 6 directly to the screen cylinder 10. The cooling tube 21 includes a yarn outlet 17 which is outside of the cooling shaft 6. Associated to the yarn outlet 17 is a yarn guide 18.
Arranged between the spin beam 4 of the spinning device 1 and the screen cylinder 10 is a seal arrangement 14. The support 15 of the screen cylinder 10 is directly mounted to the spin beam 4, The use of the seal arrangement 14 avoids that the filament strands are cooled by an inflow of external air that originates from the cooling shaft 6.
In the embodiment of the apparatus according to the invention as shown in Figure 4, the freshly extruded filament strands are initially cooled in the screen cylinder 10. To this end, a transversely directed cooling air stream is blown through a cooling air opening 23 into the air inflow opening 25. In the air inflow opening 25, the flow divider 12 divides the cooling air stream for an equalization, so that cooling air enters over the entire casing 19 of the screen cylinder 10. Thus, the filament strands 16 undergo in the screen cylinder 10 an initial cooling in a first step. Subsequently, the filament strands 16 advance together with the cooling air into the cooling tube 21 connected to the outlet end of the screen cylinder 10. In the cooling tube 21, cooling of the filament strands 16 continues, with the cooling air stream being accelerated preferably in the upper region of the cooling tube 21. Methods of this type distinguish

themselves in particular by increased production outputs and production speeds in the production of synthetic fibers.
In the embodiment of Figure 4, it is also possible that a further connection to the cooling shaft 6 exists in the inlet region of the cooling tube 21, so that a second cooling air stream could be directly guided into the cooling tube 21.
In practice, apparatus of this type are commonly used for producing a plurality of yarns. Figure 5 illustrates an embodiment of the apparatus according to the invention, which can be used for simultaneously spinning and cooling a total of six yarns. The construction of a spinning position largely corresponds to the embodiment of Figure 1, so that for the description of a spinning position the description of Figure 1 is herewith incorporated by reference.
To produce a plurality of yarns, a plurality of spinnerets 3 are mounted in one line in a spin beam
4. Each of the spinnerets 3 connects via a melt line 5
to a spin pump 27, which is constructed as a multiple
gear pump.
The cooling device 2 is arranged directly downstream of the spinning device 1, and consists of a cooling shaft 6, which extends in the shape of a rectangular solid downstream of the-spin beam 4. The construction of the cooling shaft 6 largely corresponds to the embodiment of Figure 1, so that an air diffusion wall generates a transversely directed cooling air stream for cooling the filament strands 16. In Figure
5, the apparatus is shown in a view parallel to the air
diffusion wall. The drawing plane corresponds to the
plane directly between the air diffusion wall and the

air inflow opening with a view into the air inflow opening.
In the upper region of the cooling shaft 6, a support 15 is directly secured to the underside of the spin beam 4 by mounting means not shown in greater detail. A screen cylinder 10 is associated to each spinneret 3, with a seal arrangement 14 being mounted between each spinneret 3 and each screen cylinder 10. Each of the screen cylinders 10 includes a baffle plate 11, as well as a flow divider 12. The construction and arrangement of the baffle plates and flow dividers are made to correspond to the embodiments shown in Figure 1. The support 15 is held on both face ends of the cooling shaft 6 in a guideway 24 such that it can be lowered by the mounting device, for example, for performing maintenance work on the spinnerets 3. However, the guideway 24 may also be constructed such that it holds the support in an exchangeable manner. With that, it would be possible to insert the support 15 into the cooling shaft in the fashion of a cassette.
For cooling the filament strands 16, same are extruded through the spinnerets 3 in the form of bundles, and subsequently advanced to the respectively associated screen cylinders 10. After their initial cooling in the screen cylinders 10, the filament bundles are jointly cooled in the lower region of the cooling shaft 6 by a transversely directed cooling air stream. The selected number of the spinnerets mounted in the spinning device 1 is exemplary. Thus, it is possible to cool in a cooling shaft 6, six, eight, ten, or still more yarns at the same time.
Figure 6 illustrates a further embodiment of the apparatus according to the invention for melt spinning and cooling a plurality of filament bundles.

The embodiment is substantially identical with the embodiment of Figure 5, with the cooling device being constructed in the same way as has previously been described with reference to the embodiment of Figure 4.
In the present embodiment, a screen cylinder 10 with a cooling tube 21 on its outlet end is associated to each spinneret 3. All screen cylinders 10 jointly receive air via a cooling shaft 6. Associated to each screen cylinder 10 are a baffle plate 11 and a flow divider 12, as has been previously described. In the present embodiment, the cooling tubes 21 are constructed for vertical adjustment together with the support 15t so as to allow performing maintenance work on the spinnerets 3. As regards the function for cooling the filament strands, the description of Figure 4 is herewith incorporated by reference.
The embodiments of the apparatus illustrated in Figures 1-6 are exemplary in the construction and arrangement of the individual components. Basically, there also exists the possibility of combining the baffle plate and the flow divider such that the free legs of the baffle plate 1 are joined in a center plane at an angle. In this case, the air inflow opening could be formed by corresponding passageways in the baffle plate 11.
Likewise, the illustrated configuration of the flow divider is exemplary. Thus, it is also possible and advantageous to form the flow dividers from a guide plate that can be improved by imparting defined shapes. The passageway in the flow divider could also be realized by a perforated structure, so that a plurality of openings result.

The apparatus of the invention is especially suited for cooling microfilaments with a large number of filaments. Comparison tests with conventional crossflow quenches showed considerable improvements in evenness of the produced filament strands. The apparatus of the invention can be used irrespective of the particular polymer type or irrespective of subsequent further treatments for producing yarns for any type of fiber production.

NOMENCLATURE
1 Spinning device
2 Cooling device
3 Spinneret
4 Spin beam
5 Melt line
6 Cooling shaft
7 Pressure chamber
8 Air diffusion wall
9 Blower
! 10 Screen cylinder
11 Baffle plate
12 Flow divider
13.1, 13.2 Guide plate

14 Seal arrangement
15 Support
16 Filament strands
17 Yarn outlet
18 Yarn guide
19 Casing
20 Interspace
21 Cooling tube
22 Inlet
23 Cooling air opening
24 Guideway
25 Air inflow opening
26 Passageway
27 Spin pump



CLAIMS
1. Apparatus for melt spinning and cooling a plurality of synthetic filaments (16) with a spinning device (1), which comprises at least one spinneret (3) for extruding the filaments, and with a cooling device (2), which comprises in a cooling shaft (6), downstream of the spinneret (3), a screen cylinder (10) with a gas-permeable casing (19) and a cooling flow generator (7, 9) for generating a cooling air stream that flows transversely to the direction of the advancing filaments, wherein a U-shaped baffle plate (11) is associated in spaced relationship to the screen cylinder (10) , and wherein the baffle plate (11) partially surrounds the casing (19) of the screen cylinder (10) and forms on one side an air inflow opening (25) connecting to the cooling flow generator, characterized in that
at least one flow divider (12) is associated to the air inflow opening (25), which is used to divide the cooling air stream entering the air inflow opening (25) before impacting upon the screen cylinder (10).
2. Apparatus of claim 1,
characterized in that
the flow divider (12) is formed by a plurality of guide plates (13.1, 13.2), which are mounted in the center of the air inflow opening (25), and which substantially extend over the height of the screen cylinder (10) .
3. Apparatus of claim 1 or 2,
characterized in that
the flow divider (12) comprises in its center at least one passageway (26), through which a portion of the

cooling air is directly guided toward the screen' cylinder (10).
4. Apparatus of one of claims 1-3,
characterized in that
the screen cylinder (10) corxnects on its outlet end to the cooling shaft (6), which comprises in spaced relationship with the screen cylinder (10) a lower yarn outlet (17).
5. Apparatus of one of claims 1-3,
characterized in that
the screen cylinder (10) connects at its outlet end to a cooling tube (21), which has a funnel-shaped inlet (22) for narrowing the free flow cross section.
6. Apparatus of one of claims 1-5,
characterized in that
the cooling flow generator is formed by a pressure chamber (7) connecting to the air flow opening (25) and a blower (9) connecting to the pressure chamber (7) .
7. Apparatus of claim 6,
characterized in that
between the pressure chamber (7) and the air inflow opening (25) an air diffusion wall (8) is formed, which unilaterally extends along the cooling shaft (6).
8. Apparatus of one of claims 1-7,
characterized in that on its inlet side the screen
cylinder (10) comprises a seal arrangement (14), which
sealably connects the screen cylinder (10) to a spin
beam (4) of the spinneret (3).

9. Apparatus of one of the foregoing claims,
characterized in that
the casing (19) of the screen cylinder (10) is formed from a wire mesh.
10. Apparatus of one of the foregoing claims,
characterized in that
the spinning device (1) comprises a plurality of spinnerets (3) on a common spin beam (4), that within the cooling shaft (6) one of a plurality of screen cylinders (10) is associated to each spinneret (3), and that the screen cylinders (10), the baffle plates (11) associated to the screen cylinders (10), and the flow dividers (12) are jointly held in the cooling shaft (6) by means of a support (15).
11. Apparatus of claim 10, characterized in that
the support (15) is connected to the cooling shaft (6) in a vertically adjustable and/or exchangeable manner.
12. Apparatus of claim 10 or 11,
characterized in that
the support (15) is adapted for receiving selectively additional cooling tubes (21), which each connect to the outlet ends of the screen cylinders (10) •
13. Apparatus of one of claims 10-12,
characterized in that
the cooling shaft (6) comprises on the side facing the air inflow openings (25) of the baffle plates (11), an exchangeable air diffusion wall (8) which connects to the pressure chamber (7) .

14. Apparatus of claim 13, characterized in that
the air diffusion wall (8) can be exchanged for a cassette-type wall, which comprises in the region of the air inflow openings (25) a cooling air opening (23) that connects to the pressure chamber (7).
Dated this 13 day of October 2006


Documents:

3810-CHENP-2006 CORRESPONDENCE OTHERS.pdf

3810-CHENP-2006 CORRESPONDENCE PO.pdf

3810-chenp-2006 description (complete) 24-07-2009.pdf

3810-CHENP-2006 FORM-3.pdf

3810-CHENP-2006 OTHER DOCUMENT 24-07-2009.pdf

3810-CHENP-2006 PETITIONS.pdf

3810-chenp-2006-abstract.pdf

3810-chenp-2006-claims.pdf

3810-chenp-2006-correspondnece-others.pdf

3810-chenp-2006-description(complete).pdf

3810-chenp-2006-drawings.pdf

3810-chenp-2006-form 1.pdf

3810-chenp-2006-form 18.pdf

3810-chenp-2006-form 26.pdf

3810-chenp-2006-form 3.pdf

3810-chenp-2006-form 5.pdf

3810-chenp-2006-pct.pdf


Patent Number 240446
Indian Patent Application Number 3810/CHENP/2006
PG Journal Number 21/2010
Publication Date 21-May-2010
Grant Date 12-May-2010
Date of Filing 13-Oct-2006
Name of Patentee SAURER GMBH & CO. KG
Applicant Address LANDGRAFENSTRASSE 45, D-41069 MONCHENGLADBACH, GERMANY.
Inventors:
# Inventor's Name Inventor's Address
1 ENDERS, ULRICH SCHWELMER STRASSE 54, 42897 REMSCHEID, GERMANY
2 NITSCHKE, ROLAND HEINRICHSTRASSE 30, 58089 HAGEN, GERMANY
3 SCHAFER, KLAUS HACKENBERG 79, 42897 REMSCHEID, GERMANY
4 SENGE, PETER GODEKIN STRASSE 9, 44265 DOFTMUND, GERMANY
5 REICHWEIN, MARKUS AUGUST LUTGENAU STRASSE 7, 42499 HUCKESWAGEN, GERMANY.
PCT International Classification Number D01D5/088
PCT International Application Number PCT/EP05/02211
PCT International Filing date 2005-03-03
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10 2004 012 715.8 2004-03-16 Germany