CA1064241A - Jet device for the production of textured filament yarns - Google Patents
Jet device for the production of textured filament yarnsInfo
- Publication number
- CA1064241A CA1064241A CA262,981A CA262981A CA1064241A CA 1064241 A CA1064241 A CA 1064241A CA 262981 A CA262981 A CA 262981A CA 1064241 A CA1064241 A CA 1064241A
- Authority
- CA
- Canada
- Prior art keywords
- chamber
- thread
- bars
- vapour
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Jet Device for the Production of Textured Filament Yarns Abstract of the Disclosure The invention relates to a jet device for the production of textured filament yarns from synthetic materials, comprising three coaxially and in line arranged chambers; a first chamber into which hot gas or vapour is fed, a second chamber into which a thread is sucked at angle to the direction of gas or vapour flow from the first chamber and in which the thread is heated by the hot gas or vapour, and a third chamber in which the thread is compressed to a plug. This stuffer box is formed by elastically flexible bars secured at one end of the second chamber and arranged on the surface of an imaginary right circular cylinder or truncated cone.
Description
The invention relates to a jet device for the production of textur-ed filament yarns from qynthetic materials by means of flowing heated gases or vapours.
Jet devices for texturing filament yarns are already known. These devices can broadly be divided into two groups.
The first group includes devices with axial thread input in which the heated gaseous medium either flows through oblique bores onto the thread or is supplied through a coaxial gap. The second group covers devices with axial gaseous medium supply and oblique thread input, i.e. at an angle e.g.
between 0 and approximately 90 to the axis.
.. " .
Devices of the first group have the advantage that they texture well, i.e. they produce high crimping, a high number of crimping arcs and good crimping stability, and in part also produce a satisfactory thread com-pactness, i.e. a dense arrangement of filaments in fibre assembly. However it is disadvantageous that these devices generally do not suck in the thread the~selves. Thread attachment can as a rule only take place with auxiliary devices. This is very difficult at high thread speeds and with some devices even impossible.
Thus devices of this group require longer attachment times and for use at high speeds are only partially suitable or in some cases not at,all.
In spinning/stretching texturing~ long attachment times are synonymous with high material wastage. Devices of the first group thus adveræely effect the economic viability of the texturing process 3 A further disadvantage is that only the axial ccmponent of the im- `
pulse of the gas or vapour flow is available for thread transport through the jet. However in order to effect the thread transport~ small bores or narrow slits must be used for the supply of the gaseQus medium to the ~- ;
`~ . ':
~ ~ ':' - '~
i , , ' ' ` ! : ~
.5 . :
thread. This mealls firstly l)rccision mcchanics, i.e. high production costs and secondly the danger of differences from position to position, because certain tolerances in the dimensional accuracy cannot be exceeded. As a result the uniformity of the product quality suffers.
Devices of the second group have the great advantage in respect of handling that they suck in the thread themselves. Thus the attachment process can be carried out very quickly with a single suction gun without any further auxiliary device. This also applies at high speeds e.g. 2000 metres per minute. It is a disadvantage however that the degree of textur-ing and the thread compactness of the wound textured thread are only moderate. The handling and design of the devices of the second group are simple. Although this represents great economy in the texturing process the product quality leaves much to be desired.
The object of the present invention is to provide a texturing jet which would combine in itself the advantages of simple handling and simple design on one hand and good texturing and good compact and closed ya m s on the other hand.
According to the invention, there is provided a jet device for -the production of textured filament yarns from synthetic materials, com-prising three coaxially in line arranged chambers; a first chamber into which hot gas or vapour is fed, a second chamber into which a thread is sucked at angle to the direction of gas or vapour flow from the first chamber and in which th~ thread is heated by the hot gas or vapour, and a third chamber in which the thread is compressed to a plug. The third chamber is a suffer-box formed by elastically flexible bars secured at one ~`h end of the second chamber and arranged on the surface of an imaginary right circular cylinder or truncated cone. ;~
: '.
B
-10~4;~41 In the case of conventional texturing jets of the second group, the hot gas or hot water vapour was always blown in exactly axially in order to exploit the whole jet impulse for thread transport. Hitherto~ a circular cyl-indrical tube of approximately 10 to 12 mm diameter was used às the stuffer-box. The tube surface was perforated at several points or slit along one generatrix to allow the hot gas or vapour to escape. For the tube materials, glass or high grade steel were used. The internal wall of the stuffer tube ~ad to be subjected to a special surface treatment. With an internal diameter below approximately 10 mm at yarn titres of less than 1000 dtex yarn plug could no longer be safely transported. In order to achieve a constant degree of texturing over a period of time it was necessary to ensure that the length of the plug was kept constant in time. This can for example be achieved by means of a pneumatic control system.
"
In contrast to this knowledge obtained from experience concerning -the working conditions to be observed, it has however proved that plug trans- -port may also be obtained with substantially lower stuffer tube diameters~ if according to the invention~ instead of a tube~ a series of bars are used which are arranged on the surface of a right circular cylinder or of a right cir-cular truncated cone. Surprisingly, such a bar arrangement even gives a bet-ter degree of texturing than the conventional stuffer tube, since both a great-er crimping and a higher crimp number are obtained. In addition it has been found that the formation of the yarn plug and the drawing out of the plug to -form the thread is made more even and the compactness of the ~:`',' ' ~ , ' . .
. .
. ., ~O~ 4~
textured thread after the drawing out of the plug is improved by the produc-tion of a non-axially symmetrical flow of the hot gas or vapour directly be-fore the point at which the thread is sucked in (i.e. at the end of the first of the three chambers) and by the fixing of the bars forming the compression chamber at one end only at the end of the second chamber and in addition by the use of elastically flexible bars.
Although a stuffer-box consisting only of elastically flexible bars clamped at one end appears a little unstable, such an arrangement has several advantages. The packing density of the yarn plug remains practically constant since the elastically flexible bars are able to yield easily to any pressure of the plug, so that a pressure increase of the plug expresses itself in a ` volume expansion of the plug. Constant packing density means constant textur-ing quality and the avoidance of loops which can easily occur during the drawing out of the plug to form a thread as a result of hooking inside an excessively dense plug. While in conventional stuffer tubes the regulation of the plug length or position is necessary or very advantageous, in this arrange-ment all systems of control from outside become superfluous because the bar ~-system according to the invention keeps the plug length or position sufficientlyconstant. -A non-axially symmetrical flow of the hot gas or vapour can be pro-; duced 1. By the incorporation of a non-axially symmetrical constriction or extension into the supply bo Y direct b before the thread snckine in point;
.
10~ 41
Jet devices for texturing filament yarns are already known. These devices can broadly be divided into two groups.
The first group includes devices with axial thread input in which the heated gaseous medium either flows through oblique bores onto the thread or is supplied through a coaxial gap. The second group covers devices with axial gaseous medium supply and oblique thread input, i.e. at an angle e.g.
between 0 and approximately 90 to the axis.
.. " .
Devices of the first group have the advantage that they texture well, i.e. they produce high crimping, a high number of crimping arcs and good crimping stability, and in part also produce a satisfactory thread com-pactness, i.e. a dense arrangement of filaments in fibre assembly. However it is disadvantageous that these devices generally do not suck in the thread the~selves. Thread attachment can as a rule only take place with auxiliary devices. This is very difficult at high thread speeds and with some devices even impossible.
Thus devices of this group require longer attachment times and for use at high speeds are only partially suitable or in some cases not at,all.
In spinning/stretching texturing~ long attachment times are synonymous with high material wastage. Devices of the first group thus adveræely effect the economic viability of the texturing process 3 A further disadvantage is that only the axial ccmponent of the im- `
pulse of the gas or vapour flow is available for thread transport through the jet. However in order to effect the thread transport~ small bores or narrow slits must be used for the supply of the gaseQus medium to the ~- ;
`~ . ':
~ ~ ':' - '~
i , , ' ' ` ! : ~
.5 . :
thread. This mealls firstly l)rccision mcchanics, i.e. high production costs and secondly the danger of differences from position to position, because certain tolerances in the dimensional accuracy cannot be exceeded. As a result the uniformity of the product quality suffers.
Devices of the second group have the great advantage in respect of handling that they suck in the thread themselves. Thus the attachment process can be carried out very quickly with a single suction gun without any further auxiliary device. This also applies at high speeds e.g. 2000 metres per minute. It is a disadvantage however that the degree of textur-ing and the thread compactness of the wound textured thread are only moderate. The handling and design of the devices of the second group are simple. Although this represents great economy in the texturing process the product quality leaves much to be desired.
The object of the present invention is to provide a texturing jet which would combine in itself the advantages of simple handling and simple design on one hand and good texturing and good compact and closed ya m s on the other hand.
According to the invention, there is provided a jet device for -the production of textured filament yarns from synthetic materials, com-prising three coaxially in line arranged chambers; a first chamber into which hot gas or vapour is fed, a second chamber into which a thread is sucked at angle to the direction of gas or vapour flow from the first chamber and in which th~ thread is heated by the hot gas or vapour, and a third chamber in which the thread is compressed to a plug. The third chamber is a suffer-box formed by elastically flexible bars secured at one ~`h end of the second chamber and arranged on the surface of an imaginary right circular cylinder or truncated cone. ;~
: '.
B
-10~4;~41 In the case of conventional texturing jets of the second group, the hot gas or hot water vapour was always blown in exactly axially in order to exploit the whole jet impulse for thread transport. Hitherto~ a circular cyl-indrical tube of approximately 10 to 12 mm diameter was used às the stuffer-box. The tube surface was perforated at several points or slit along one generatrix to allow the hot gas or vapour to escape. For the tube materials, glass or high grade steel were used. The internal wall of the stuffer tube ~ad to be subjected to a special surface treatment. With an internal diameter below approximately 10 mm at yarn titres of less than 1000 dtex yarn plug could no longer be safely transported. In order to achieve a constant degree of texturing over a period of time it was necessary to ensure that the length of the plug was kept constant in time. This can for example be achieved by means of a pneumatic control system.
"
In contrast to this knowledge obtained from experience concerning -the working conditions to be observed, it has however proved that plug trans- -port may also be obtained with substantially lower stuffer tube diameters~ if according to the invention~ instead of a tube~ a series of bars are used which are arranged on the surface of a right circular cylinder or of a right cir-cular truncated cone. Surprisingly, such a bar arrangement even gives a bet-ter degree of texturing than the conventional stuffer tube, since both a great-er crimping and a higher crimp number are obtained. In addition it has been found that the formation of the yarn plug and the drawing out of the plug to -form the thread is made more even and the compactness of the ~:`',' ' ~ , ' . .
. .
. ., ~O~ 4~
textured thread after the drawing out of the plug is improved by the produc-tion of a non-axially symmetrical flow of the hot gas or vapour directly be-fore the point at which the thread is sucked in (i.e. at the end of the first of the three chambers) and by the fixing of the bars forming the compression chamber at one end only at the end of the second chamber and in addition by the use of elastically flexible bars.
Although a stuffer-box consisting only of elastically flexible bars clamped at one end appears a little unstable, such an arrangement has several advantages. The packing density of the yarn plug remains practically constant since the elastically flexible bars are able to yield easily to any pressure of the plug, so that a pressure increase of the plug expresses itself in a ` volume expansion of the plug. Constant packing density means constant textur-ing quality and the avoidance of loops which can easily occur during the drawing out of the plug to form a thread as a result of hooking inside an excessively dense plug. While in conventional stuffer tubes the regulation of the plug length or position is necessary or very advantageous, in this arrange-ment all systems of control from outside become superfluous because the bar ~-system according to the invention keeps the plug length or position sufficientlyconstant. -A non-axially symmetrical flow of the hot gas or vapour can be pro-; duced 1. By the incorporation of a non-axially symmetrical constriction or extension into the supply bo Y direct b before the thread snckine in point;
.
10~ 41
2. By the provision of at least one slit with rectangular cross-section opening into the bore shortly before the thread sucking in point, whereby for a slit width b, relative ~o the narrowest diameter d of the bore, the relation-ship 0.1 dS b c 0.5 d is true;
3. By the incorporation of a twist element in the bore directly before the thread sucking in point;
4. By the incorporation of an insert shortly before the thread sucking in point into the bore, this insert containing at least two smaller bores and none of the axes of these smaller bores lying in a plane with the axis of the larger bore. For example, the àxes of the smaller bores may coincide with - tangents to a helical line coaxial with the axis of the large bore. The sum of the cross-sectional areas of the smaller bores should be roughly equal to the cross-sectional area of the large bore.
All four arrangements for the production of a non-axially symmetri-cal flow are of equal value in their effectiveness. However, the complexity of the production of the devices is somewhat smaller in the second and fourth - -cases.
The device according to the invention contains two new features, ; namely the non-axially symmetrical flow of the hot gas or vapour directly be-fore the thread sucking in point (feature 1) and the new stuffer-box consist-ing of bars arranged in a particular manner (feature 2).
The new texturing jet according to the invention, even without the - feature of "non-axiaIly symmetrical flow~, brings a marked improvement in the degree of texturing and in the thread compactness after the drawing out of .~ .
i the Jarn pl~ t~
, _5_ . . . ~ . , .
, .......................................................................... .
10~4;~41 form a thread after the texturing nozzle. Even with axially symmetrical flow before the thread sucking in point the new stuffer-box effects a great techni-cal advance which expresses itself in high product quality. By producing a non-axially symmetrical flow, the positive effect of the new stuffer-box on the product quality is clearly augmented. The non-axially symmetrical flow is thus associated with a pure amplification effect which in the case of the con-ventional stuffer tube brings no significant improvement of the product quality. To summarize, it can be stated that feature 2 of the invention alone represents a clear technical advance, which is increased by feature 1. How-ever feature 1 alone, i.e. without feature 2~ does not lead to a significant technical advance.
The stuffer-box according to the invention can be produced in different ways. One great advantage of this stuffer-box consisting of bars held at one end is that the geometry within certain ;m;ts, does not have a ; decisive influence on the mode of working. Thus it has proved that in the - '-~
case of the arrangement of the bars on the surface of an ;maginary right cir-cular cylinder, the length of the chamber or of the bars can be varied in the range from 30 to 300 mm, and of the chamber internal diameter from 2.5 to 10 mm without the texturing result being significantly influenced. However, normally, lengths of from 100 to 200 mm and chamber internal diameter of from 3 to 7 mm are preferred. The bars can also be arranged on the surface of an imaginary right circular truncated cone, whereby the an~le of the generatrices with the base (clamping surface of the bars) should be greater than 80 and less than 110C.
.,,_ .. .. . .
1~i4;~41 Angles between approximately 80 and 90 seem to be the st favourable with yarn titres (texturized titre? in the range 1000 to 3000 dtex. The cross-sectional shape of the bars has no recognizable influence on the yarn quality - provided sharp edge and projections on the surface of the bars are avoided.
However the simplest method is to use bars having circular cross-section.
Such bars should usefully have a diameter of from I to 3 mm. The distance between two neighbouring bars at the clamping point is from 0.2 to 1.5 mm.
The spacing of the bars should be sufficiently large that the heated gas or vapour can easily pass out between the bars even when the bars are elastically deformed but not so large that the yarn graft can squeeze out between the bars. The material used for the bars and the nature of the surface of the ;-bars is only of subordinate importance provided sharp edges and projections are avoided and materials which are to some degree wear resistant are used.
However the wear resistance requirements are not so great that only ceramic components of, for example, A1203 would come into consideration. Normal com-mercial welding rods have proved effective as ~ars for example. Their wear ~ ~
resistance and surface quality are quite sufficient. It is useful to arrange ~ -the bars in such a way that they can be easily exchanged. When using low -cost bars it is simpler and cheaper to exchange damaged or contaminated bars - 20 than to reprocess them or clean them. It is even simpler, more useful and more reliable to mount all the bars permanently on a ring so that the stuffer-box constitutes a single unit which is fixed to the second chamber of the texturing jet and can if necessary be easily exchanged. ~ -;: ' .
.
. _ . . ...................... . .
: . . . . .
10tj4;~41 As the heated gases or vapours, for reasons of cost, heated air and superheated water vapour (steam) come primarily into consideration. For the texturing of polyamide filament yarns, superheated water vapour produces rather better results particularly in respect of uniformity of texturing.
Suitable pressures for the superheated water vapour are in the range from 3 to 10 bars. The mass ratio of vapour to thread should be from 0.2 to 0.5.
The device according to the invention can be used particularly advantageously for the texturing of filament yarns for carpets. The present invention therefore also relates to this usage but this is not to be taken as ; 10 a li~itation of the possibilities of use. It has in fact been shown that, for example, polyester filament yarns with textile titre (167 dtex) can be -textured in the device according to the invention at high speeds (3000 metres - - -per minute) with good results. In the case of textile titres, the internal diameter of the compression chamber is preferably in the region of 3 mm.
Examples of embodiments of the device according to the invention are shown schematically in the accompanying drawings in which:
Figure 1 shows a schematic iIlustration of the device consisting of three chambers.
.... .
Figure 2 shows a sectional drawing of the stuffer chiamber.
Figures 3 and 4 show an embodiment of the first chamber having three rectangular slits before the sucking in point of the thread (two views of the slits).
,, : ~
-,:: . . - , ..
. . . . . . .
.. - . ,. ~. ' . ~ :. . ..
. i..
Figures 5 and 6 show another embodiment of the fir~t chamber with an insert directly before the thread sucking in point, which contains three small bores, none of the axes of these small bores being coplanar with the axis of the large bore (two views of the small bores).
Figure 7 shows an embodiment of the third chamber (stuffer chamber) with a device for securing the stuffer chamber at the end of the seaond cham-ber.
The device according to Figure 1 consists of the three chambers 1, 2 and 3. The hot gas or vapour 4 flows axially into the chamber 1~ which has at its end an insert 5 for the production of a non-axially symmetrical flow.
The thread 6 is sucked in immediately after the chamber 1 or the insert 5 and heated in the chamber 2 by the hot gaseous medium. me chamber 2 comprises a - .
bore 7, which extends into a funnel 8 which serves as the transition from ~ -the smaller bore 7 to the diameter of the chamber 3 (compression chamber).
The stuffer chamber 3 consists of twelve cylindrical elastically flexible steel bars 9 which are secured equidistantly at the end 10 of the chamber 2.
As shown in Figures 3 and 4, three rectangular slots 11 arranged radiaIly at 120 to each other are located in the chamber 1 to produce a non-axially ~ -symmetrical flow.
As shown in Figures 5 and 6, at the end of the chamber 1, three small bores 12 are provided. None of the axes of these bores is coplanar with the axis of the large bore 13. In addition, the axes of the bores 12 are at ; varying angles both to the cross-sectional plane - at right angles to the axis of the bore 13 - and also to the relevant (i.e. intersecting the A~is) radial stream in one cross-sectional plane - at right angles to the axis of ¦ the bore 13.
_g_ .... . . ..
All four arrangements for the production of a non-axially symmetri-cal flow are of equal value in their effectiveness. However, the complexity of the production of the devices is somewhat smaller in the second and fourth - -cases.
The device according to the invention contains two new features, ; namely the non-axially symmetrical flow of the hot gas or vapour directly be-fore the thread sucking in point (feature 1) and the new stuffer-box consist-ing of bars arranged in a particular manner (feature 2).
The new texturing jet according to the invention, even without the - feature of "non-axiaIly symmetrical flow~, brings a marked improvement in the degree of texturing and in the thread compactness after the drawing out of .~ .
i the Jarn pl~ t~
, _5_ . . . ~ . , .
, .......................................................................... .
10~4;~41 form a thread after the texturing nozzle. Even with axially symmetrical flow before the thread sucking in point the new stuffer-box effects a great techni-cal advance which expresses itself in high product quality. By producing a non-axially symmetrical flow, the positive effect of the new stuffer-box on the product quality is clearly augmented. The non-axially symmetrical flow is thus associated with a pure amplification effect which in the case of the con-ventional stuffer tube brings no significant improvement of the product quality. To summarize, it can be stated that feature 2 of the invention alone represents a clear technical advance, which is increased by feature 1. How-ever feature 1 alone, i.e. without feature 2~ does not lead to a significant technical advance.
The stuffer-box according to the invention can be produced in different ways. One great advantage of this stuffer-box consisting of bars held at one end is that the geometry within certain ;m;ts, does not have a ; decisive influence on the mode of working. Thus it has proved that in the - '-~
case of the arrangement of the bars on the surface of an ;maginary right cir-cular cylinder, the length of the chamber or of the bars can be varied in the range from 30 to 300 mm, and of the chamber internal diameter from 2.5 to 10 mm without the texturing result being significantly influenced. However, normally, lengths of from 100 to 200 mm and chamber internal diameter of from 3 to 7 mm are preferred. The bars can also be arranged on the surface of an imaginary right circular truncated cone, whereby the an~le of the generatrices with the base (clamping surface of the bars) should be greater than 80 and less than 110C.
.,,_ .. .. . .
1~i4;~41 Angles between approximately 80 and 90 seem to be the st favourable with yarn titres (texturized titre? in the range 1000 to 3000 dtex. The cross-sectional shape of the bars has no recognizable influence on the yarn quality - provided sharp edge and projections on the surface of the bars are avoided.
However the simplest method is to use bars having circular cross-section.
Such bars should usefully have a diameter of from I to 3 mm. The distance between two neighbouring bars at the clamping point is from 0.2 to 1.5 mm.
The spacing of the bars should be sufficiently large that the heated gas or vapour can easily pass out between the bars even when the bars are elastically deformed but not so large that the yarn graft can squeeze out between the bars. The material used for the bars and the nature of the surface of the ;-bars is only of subordinate importance provided sharp edges and projections are avoided and materials which are to some degree wear resistant are used.
However the wear resistance requirements are not so great that only ceramic components of, for example, A1203 would come into consideration. Normal com-mercial welding rods have proved effective as ~ars for example. Their wear ~ ~
resistance and surface quality are quite sufficient. It is useful to arrange ~ -the bars in such a way that they can be easily exchanged. When using low -cost bars it is simpler and cheaper to exchange damaged or contaminated bars - 20 than to reprocess them or clean them. It is even simpler, more useful and more reliable to mount all the bars permanently on a ring so that the stuffer-box constitutes a single unit which is fixed to the second chamber of the texturing jet and can if necessary be easily exchanged. ~ -;: ' .
.
. _ . . ...................... . .
: . . . . .
10tj4;~41 As the heated gases or vapours, for reasons of cost, heated air and superheated water vapour (steam) come primarily into consideration. For the texturing of polyamide filament yarns, superheated water vapour produces rather better results particularly in respect of uniformity of texturing.
Suitable pressures for the superheated water vapour are in the range from 3 to 10 bars. The mass ratio of vapour to thread should be from 0.2 to 0.5.
The device according to the invention can be used particularly advantageously for the texturing of filament yarns for carpets. The present invention therefore also relates to this usage but this is not to be taken as ; 10 a li~itation of the possibilities of use. It has in fact been shown that, for example, polyester filament yarns with textile titre (167 dtex) can be -textured in the device according to the invention at high speeds (3000 metres - - -per minute) with good results. In the case of textile titres, the internal diameter of the compression chamber is preferably in the region of 3 mm.
Examples of embodiments of the device according to the invention are shown schematically in the accompanying drawings in which:
Figure 1 shows a schematic iIlustration of the device consisting of three chambers.
.... .
Figure 2 shows a sectional drawing of the stuffer chiamber.
Figures 3 and 4 show an embodiment of the first chamber having three rectangular slits before the sucking in point of the thread (two views of the slits).
,, : ~
-,:: . . - , ..
. . . . . . .
.. - . ,. ~. ' . ~ :. . ..
. i..
Figures 5 and 6 show another embodiment of the fir~t chamber with an insert directly before the thread sucking in point, which contains three small bores, none of the axes of these small bores being coplanar with the axis of the large bore (two views of the small bores).
Figure 7 shows an embodiment of the third chamber (stuffer chamber) with a device for securing the stuffer chamber at the end of the seaond cham-ber.
The device according to Figure 1 consists of the three chambers 1, 2 and 3. The hot gas or vapour 4 flows axially into the chamber 1~ which has at its end an insert 5 for the production of a non-axially symmetrical flow.
The thread 6 is sucked in immediately after the chamber 1 or the insert 5 and heated in the chamber 2 by the hot gaseous medium. me chamber 2 comprises a - .
bore 7, which extends into a funnel 8 which serves as the transition from ~ -the smaller bore 7 to the diameter of the chamber 3 (compression chamber).
The stuffer chamber 3 consists of twelve cylindrical elastically flexible steel bars 9 which are secured equidistantly at the end 10 of the chamber 2.
As shown in Figures 3 and 4, three rectangular slots 11 arranged radiaIly at 120 to each other are located in the chamber 1 to produce a non-axially ~ -symmetrical flow.
As shown in Figures 5 and 6, at the end of the chamber 1, three small bores 12 are provided. None of the axes of these bores is coplanar with the axis of the large bore 13. In addition, the axes of the bores 12 are at ; varying angles both to the cross-sectional plane - at right angles to the axis of the bore 13 - and also to the relevant (i.e. intersecting the A~is) radial stream in one cross-sectional plane - at right angles to the axis of ¦ the bore 13.
_g_ .... . . ..
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A jet device for the production of textured filament yarns from synthetic materials, comprising three coaxially in line arranged chambers, a first chamber into which hot gas or vapour is fed, a second chamber into which a thread is sucked at angle to the direction of gas or vapour flow from the first chamber and in which the thread is heated by the hot gas or vapour, and a third chamber in which the thread is compressed to a plug, said third chamber being a stuffer-box formed by elastically flexible bars secured at one end of the second chamber and arranged on the surface of an imaginary right circular cylinder or truncated cone.
2. A device as claimed in claim 1, wherein the first chamber comprises an outlet for producing a non-axially symmetrical gas or vapour flow at the inlet to the second chamber.
3. A device as claimed in claim 2, wherein the outlet comprises a non-axially symmetrical constriction or extension.
4. A device as claimed in claim 3, wherein the first chamber com-prises an axial cylindrical bore of diameter d and has at least one rectangular slit in the end thereof of slit width b, where 0.1 d < b < 0.5 d.
5. A device as claimed in claim 2, wherein the outlet comprises an element for imparting twist to the gas or vapour flow.
6. A device as claimed in claim 5, wherein the first chamber com-prises a bore and the outlet comprises a plurality of smaller bores, none of the axes of the smaller bores being coplanar with the axis of the large bore.
7. A device as claimed in claim 1, wherein the third chamber has a length of from 30 to 300 mm and an internal diameter of from 2.5 to 10 mm.
8. A device as claimed in claim 1, wherein the third chamber is formed from circular cylindrical bars, preferably of metal, of from 1 to 3 mm in diameter which are arranged equidistantly at the clamping point and the distance between each two neighboring bars at the clamping point is from 0.2 to 1.5 mm.
9. A device as claimed in claim 1, wherein the bars forming the third chamber are arranged around the surface of an imaginary right circular cylinder.
10. A device as claimed in claim 1, wherein the bars forming the third chamber are clamped in such a way that they lie on the surface of an imaginary right circular truncated cone, the angle of the generatrices with the base being greater than 80°.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19752545590 DE2545590C3 (en) | 1975-10-11 | 1975-10-11 | Nozzle device for the production of textured filament yarns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064241A true CA1064241A (en) | 1979-10-16 |
Family
ID=5958898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA262,981A Expired CA1064241A (en) | 1975-10-11 | 1976-10-08 | Jet device for the production of textured filament yarns |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS6044412B2 (en) |
| AT (1) | AT364436B (en) |
| BE (1) | BE847148A (en) |
| CA (1) | CA1064241A (en) |
| CH (1) | CH603846A5 (en) |
| CS (1) | CS189036B2 (en) |
| DD (1) | DD127848A5 (en) |
| DE (1) | DE2545590C3 (en) |
| DK (1) | DK454676A (en) |
| ES (1) | ES452281A1 (en) |
| FR (1) | FR2327335A1 (en) |
| GB (1) | GB1567311A (en) |
| IT (1) | IT1068544B (en) |
| LU (1) | LU75960A1 (en) |
| NL (1) | NL7611170A (en) |
| PL (1) | PL103513B1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2631393C3 (en) * | 1976-07-13 | 1984-09-20 | Bayer Ag, 5090 Leverkusen | Nozzle device for the production of textured filament yarns |
| JPS54120763A (en) * | 1978-03-10 | 1979-09-19 | Chisso Corp | Bulkiness finishing apparatus |
| DE2828306C2 (en) * | 1978-06-28 | 1982-07-08 | Bayer Ag, 5090 Leverkusen | Device for blow texturing thermoplastic textile yarn |
| JPS5685433A (en) * | 1979-12-12 | 1981-07-11 | Chisso Corp | Production of high bulk synthetic fiber yarn |
| CA1169640A (en) * | 1980-09-04 | 1984-06-26 | Colin Firth | Texturising of yarn |
| JPS5824949Y2 (en) * | 1981-06-23 | 1983-05-28 | チッソ株式会社 | Bulking equipment |
| DE3562784D1 (en) * | 1984-05-30 | 1988-06-23 | Rieter Ag Maschf | Apparatus for texturing continuous filament yarns |
| JPH0510487Y2 (en) * | 1986-06-17 | 1993-03-15 | ||
| DE3714610A1 (en) * | 1987-05-01 | 1988-11-10 | Bayer Ag | DEVICE FOR CRAWLING LARGE FILAMENT TABLES |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR924752A (en) * | 1946-03-05 | 1947-08-14 | Crins Averseng Soc D | Machine for crimping fibers of animal, vegetable or mineral origin |
| US3099594A (en) * | 1960-05-05 | 1963-07-30 | Eastman Kodak Co | Method for blooming filter tow |
| US3854177A (en) * | 1960-07-19 | 1974-12-17 | Du Pont | Process and apparatus for texturing yarn |
| US3262177A (en) * | 1961-11-01 | 1966-07-26 | Owens Corning Fiberglass Corp | Apparatus for producing novelty bulked yarn |
| US3258825A (en) * | 1962-03-26 | 1966-07-05 | Eastman Kodak Co | Methods for the production of highshrink modacrylic yarn |
| US3296677A (en) * | 1963-05-20 | 1967-01-10 | Eastman Kodak Co | Crimping apparatus and process |
| GB1077520A (en) * | 1963-12-27 | 1967-08-02 | Snia Viscosa | Improved process and apparatus for use in the crimping of filaments |
| US3256582A (en) * | 1964-03-04 | 1966-06-21 | Burlington Industries Inc | Apparatus and method for bulking yarn |
| US3281913A (en) * | 1964-08-10 | 1966-11-01 | Eastman Kodak Co | Apparatus and method for handling yarn bundles |
| US3413697A (en) * | 1966-02-28 | 1968-12-03 | Eastman Kodak Co | Apparatus for production of high-shrink yarn |
| US3409956A (en) * | 1966-07-05 | 1968-11-12 | Allied Chem | Apparatus and process for texturizing yarn |
| US3402446A (en) * | 1966-08-03 | 1968-09-24 | Owens Corning Fiberglass Corp | Apparatus for bulking yarn |
| DE2006022C3 (en) * | 1970-02-11 | 1981-10-15 | Basf Ag, 6700 Ludwigshafen | Device for the production of textured threads |
| FR2296712A1 (en) * | 1974-12-31 | 1976-07-30 | Rhone Poulenc Textile | METHOD AND DEVICE FOR FORMING TEXTILE YARN PACKING |
-
1975
- 1975-10-11 DE DE19752545590 patent/DE2545590C3/en not_active Expired
-
1976
- 1976-10-05 PL PL19283776A patent/PL103513B1/en unknown
- 1976-10-06 GB GB4144676A patent/GB1567311A/en not_active Expired
- 1976-10-06 DD DD19519176A patent/DD127848A5/en unknown
- 1976-10-08 CA CA262,981A patent/CA1064241A/en not_active Expired
- 1976-10-08 AT AT0750276A patent/AT364436B/en not_active IP Right Cessation
- 1976-10-08 CH CH1276276A patent/CH603846A5/xx not_active IP Right Cessation
- 1976-10-08 NL NL7611170A patent/NL7611170A/en not_active Application Discontinuation
- 1976-10-08 DK DK454676A patent/DK454676A/en unknown
- 1976-10-08 LU LU75960A patent/LU75960A1/xx unknown
- 1976-10-08 JP JP12048776A patent/JPS6044412B2/en not_active Expired
- 1976-10-08 IT IT2816776A patent/IT1068544B/en active
- 1976-10-09 ES ES452281A patent/ES452281A1/en not_active Expired
- 1976-10-11 BE BE171396A patent/BE847148A/en not_active IP Right Cessation
- 1976-10-11 FR FR7630503A patent/FR2327335A1/en active Granted
- 1976-10-11 CS CS654576A patent/CS189036B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7611170A (en) | 1977-04-13 |
| AT364436B (en) | 1981-10-27 |
| JPS5253047A (en) | 1977-04-28 |
| DK454676A (en) | 1977-04-12 |
| FR2327335A1 (en) | 1977-05-06 |
| CS189036B2 (en) | 1979-03-30 |
| PL103513B1 (en) | 1979-06-30 |
| BE847148A (en) | 1977-04-12 |
| ATA750276A (en) | 1981-03-15 |
| GB1567311A (en) | 1980-05-14 |
| DD127848A5 (en) | 1977-10-19 |
| FR2327335B1 (en) | 1980-10-10 |
| JPS6044412B2 (en) | 1985-10-03 |
| IT1068544B (en) | 1985-03-21 |
| ES452281A1 (en) | 1977-11-16 |
| DE2545590C3 (en) | 1985-05-09 |
| DE2545590A1 (en) | 1977-04-14 |
| LU75960A1 (en) | 1977-05-25 |
| CH603846A5 (en) | 1978-08-31 |
| DE2545590B2 (en) | 1977-12-15 |
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