EP1548162A2 - Drafting apparatus with fiber feeding means having longer service lifetime - Google Patents
Drafting apparatus with fiber feeding means having longer service lifetime Download PDFInfo
- Publication number
- EP1548162A2 EP1548162A2 EP04027376A EP04027376A EP1548162A2 EP 1548162 A2 EP1548162 A2 EP 1548162A2 EP 04027376 A EP04027376 A EP 04027376A EP 04027376 A EP04027376 A EP 04027376A EP 1548162 A2 EP1548162 A2 EP 1548162A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- endless belt
- feeding means
- pair
- fiber
- drafting apparatus
- 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.)
- Withdrawn
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
Definitions
- This invention concerns a drafting apparatus constructed in a way such that a fiber bundle is transported to the downstream side while stretched, and particularly, to improvement on fiber feeding means in the drafting apparatus.
- a drafting apparatus As well known, a drafting apparatus, as shown in Fig. 3, has been installed in a yarn manufacturing machine such as a spinning machine constituted of a drafting apparatus D and a spinning member S downstream thereof and besides in a fiber processing machine such as a roving machine and a slivering machine.
- the drafting apparatus D in a spinning machine as an example thereof includes : plural pairs of drafting rollers, which constitutes pairs of fiber feeding means.
- the drafting rollers are for use in drafting a sliver F and constituted of, for example, a pair of front rollers Rf, a pair of second rollers R2 having aprons, a pair of third rollers R3 and a pair of back rollers Rb.
- the invention has been made in order to solve the problem of the prior art and it is an object of the invention to provide a drafting apparatus, one of a pair of fiber feeding means constituting which is formed with an endless belt as an especially important element to thereby achieve a longer lifetime in service of a front roller Rf, to realize labor-saving in spinning operation and to improve an operation efficiency.
- the invention set forth in claim 2 is the drafting apparatus set forth in claim 1, characterized in that a tension is imparted to the endless belt in state of being wound around at least two pulleys, one of the at least two pulleys works to bring the endless belt into contact with the nip point so as to form the nip point, the at least two pulleys are disposed so that a direction in which the endless belt extends between the at least two pulleys intersects with a direction in which the fiber bundle is fed and the endless belt is wound around the at least two pulleys.
- Fig. 1 is a side view schematically showing a main section of a spinning machine combined with a drafting apparatus according to the invention.
- Figs. 2 A and 2B show an example of the drafting apparatus in which an endless belt is applied to the top side of a pair of a first feeding means Rf, wherein Fig. 2A is a plan view schematically showing a main portion thereof and Fig. 2B is a cross sectional view of part of the endless belt together with related portions thereof.
- the endless belt means 11 in the pair of first feed means Rf includes the endless belt 12 and at least two pulleys 14 and 15 and a tension is imparted to the endless belt 12 in a state of being wound around the at least two pulleys 14 and 15.
- the pulley 14 brings the endless belt 12 into contact with the nip point N so as to form the nip point N, which can be realized with a configuration in which a line EL in a direction in which the endless belt means 11 spanned over the two pulleys extends intersects with a direction FD in which the fiber bundle is fed.
- plural pairs of fiber feeding means include: a pair of first feeding means Rf; a pair of second feeding means R2 having aprons; a pair of third feeding means R3 and a pair of fourth feeding means Rb in the order from the downstream side, wherein each of the pairs of second, third and fourth feeding means R2, R3 and Rb are constituted of a top roller 2 and bottom roller 3 combined and the pair of first feeding means Rf is constituted of the endless belt means 11 and a bottom roller 3 combined.
- Each of these pairs of fiber feeding means is higher in speed toward the downstream side.
- the endless belt 12 is composed of a pair of fiber feeding means having the highest fiber feed speed in the most downstream side, that is disposed in the pair of first feeding means Rf.
- a sliver F is drafted through the front roller Rf, the second roller R2 and the third roller R3, thereafter, guided into an air nozzle S1 and a pair of twisting rollers T constituting a spinning member S and a fiber bundle is twisted by a cooperative action of the air nozzle S1 and the twisting rollers T.
- a twisting efficiency of the combination is high with the result that a yarn can be spun at a high speed (200 m/min or higher).
- the effect of a longer lifetime in service in the invention is more conspicuous with a higher spinning speed, that is with a higher feed speed of the drafting apparatus D.
- a pulley 14 for bringing the endless belt 12 into contact with the nip point N has the protrusions 16 and 17 formed outwardly from the both ends 12a and 12a of the endless belt 12 in the width direction thereof and the level difference portions d are formed between each of the protrusions 16 and 17, and the contact portion at the nip point N of the endless belt 12. That is, if an outer diameter of the pulley 14 is set to ⁇ 1, an outer diameter of the protrusions 16 and 17 is set to ⁇ 2 and a thickness of the endless belt 12 is set to t by definition, the level difference portions d are formed if setting is made so as to establish a relation of [ ( ⁇ 2 - ⁇ 1) /2] ⁇ t.
- a drafting apparatus D related to the invention is applied to a spinning machine using a vortex air stream
- the invention is not limited the this application and can also applied to any of fiber processing machines each installed with a drafting apparatus such as a roving machine, slivering machine and a ring fine spinning machine.
- one of the pair of the fiber feeding means is constituted of an endless belt to thereby enable a longer lifetime in service of the fiber feeding means to be realized; thereby enabling the desired object to be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Provided is a drafting apparatus to achieve a longer
lifetime in service of a front roller therein, to realize
labor-saving in spinning operation and to improve an operation
efficiency. A drafting apparatus D includes a pair of fiber
feeding means for transporting a sliver F to the downstream side
while grasping the sliver F at a nip point N and stretching it,
characterized in that one of the pair of fiber feeding means
is constituted of an endless belt 12, and the pair of fiber feeding
means is provided so that a feeding force acting in a direction
of feeding the fiber bundle with the endless belt is concentrated
on the nip point.
Description
This invention concerns a drafting apparatus constructed
in a way such that a fiber bundle is transported to the downstream
side while stretched, and particularly, to improvement on fiber
feeding means in the drafting apparatus.
As well known, a drafting apparatus, as shown in Fig. 3,
has been installed in a yarn manufacturing machine such as a
spinning machine constituted of a drafting apparatus D and a
spinning member S downstream thereof and besides in a fiber
processing machine such as a roving machine and a slivering
machine. The drafting apparatus D in a spinning machine as an
example thereof includes : plural pairs of drafting rollers, which
constitutes pairs of fiber feeding means. The drafting rollers
are for use in drafting a sliver F and constituted of, for example,
a pair of front rollers Rf, a pair of second rollers R2 having
aprons, a pair of third rollers R3 and a pair of back rollers
Rb. Each of the pairs of rollers is a combination of a top roller
2 and a bottom roller 3. A top roller and bottom roller of each
of the pairs are in contact with each other and rotates in opposed
directions. Therefore, a sliver is guided into between a top
roller and bottom roller and can be drafted by the top roller
and bottom roller, and a drafted fiber bundle is delivered from
the pair of front rollers Rf of the drafting apparatus D.
In a conventional drafting apparatus D as described above,
the drafting rollers have been rubber rollers, which are
disclosed in Patent Document 1 and Patent Document 2. Rubber
rollers used as sliver feeding means has had a problem of shortness
of a lifetime in service and lowering physical properties of
a yarn, which compels an operator to do an exchange operation
at a short time or operations of repolishing, an ultraviolet
treatment and the like.
The invention has been made in order to solve the problem
of the prior art and it is an object of the invention to provide
a drafting apparatus, one of a pair of fiber feeding means
constituting which is formed with an endless belt as an especially
important element to thereby achieve a longer lifetime in service
of a front roller Rf, to realize labor-saving in spinning
operation and to improve an operation efficiency.
The invention of this application, in order to achieve
the object, is directed, to be concrete, to a drafting apparatus
including a pair of fiber feeding means for transporting a fiber
bundle to the downstream side while grasping the fiber bundle
at a nip point and stretching it, characterized in that one of
the pair of fiber feeding means is constituted of an endless
belt, and the pair of fiber feeding means is provided so that
a feeding force acting in a direction of feeding the fiber bundle
with the endless belt is concentrated on the nip point.
Further, in this invention, the invention set forth in
claim 2 is the drafting apparatus set forth in claim 1,
characterized in that a tension is imparted to the endless belt
in state of being wound around at least two pulleys, one of the
at least two pulleys works to bring the endless belt into contact
with the nip point so as to form the nip point, the at least
two pulleys are disposed so that a direction in which the endless
belt extends between the at least two pulleys intersects with
a direction in which the fiber bundle is fed and the endless
belt is wound around the at least two pulleys.
Moreover, in this invention, the invention set forth in
claim 3 is the drafting apparatus set forth in claim 1 or 2,
characterized in that plural pairs of feeding means thereof
provided so as to be higher in feed speed of a pair of feeding
means toward the downstream, wherein the endless belt is disposed
in a pair of fiber feeding means having the highest fiber feed
speed in the most downstream side.
Moreover, in this invention, the invention set forth in
claim 4 is the drafting apparatus set forth in claim 3,
characterized in that the pulley for bringing the endless belt
into contact with the nip point has protrusions formed outwardly
from the both ends of the endless belt in the width direction
thereof and level difference portions are formed between the
protrusions and a contact portion at the nip point of the endless
belt.
Moreover, in this invention, the invention set forth in
claim 5 is the drafting apparatus set forth in any of claims
1 to 4, characterized in that the pair of fiber feeding means
one of which is constituted of an endless belt is used in a spinning
machine installedwith a spinning member twisting a drafted fiber
bundle with the action of a vortex air stream thereon.
Moreover, in the invention, the invention set forth in
claim 6 is the drafting apparatus set forth in claim 5,
characterized in that the spinning member is constituted of an
air-spin nozzle generating a vortex air stream and a hollow guide
shaft having a passage for a produced yarn.
Detailed description will be given of a drafting apparatus
according to the invention below based on concrete examples shown
in the accompanying drawings. Fig. 1 is a side view schematically
showing a main section of a spinning machine combined with a
drafting apparatus according to the invention. Figs. 2 A and
2B show an example of the drafting apparatus in which an endless
belt is applied to the top side of a pair of a first feeding
means Rf, wherein Fig. 2A is a plan view schematically showing
a main portion thereof and Fig. 2B is a cross sectional view
of part of the endless belt together with related portions
thereof.
According to the invention, in a drafting apparatus D
including a pair of fiber feeding means for transporting a sliver
F to the downstream side while grasping the sliver F at a nip
point N and stretching it, not only is the top side of a pair
of first fiber feedingmeans Rf constituted of endless belt means
11 including an endless belt 12, but a force imparting means
13 imparting a force to the endless belt 12 is also provided
so that a feeding force in a direction in which the sliver F
is fed is concentrated on the nip point N.
The endless belt means 11 in the pair of first feed means
Rf includes the endless belt 12 and at least two pulleys 14 and
15 and a tension is imparted to the endless belt 12 in a state
of being wound around the at least two pulleys 14 and 15. In
the example shown in Figs. 1, and 2A and 2B, the pulley 14 brings
the endless belt 12 into contact with the nip point N so as to
form the nip point N, which can be realized with a configuration
in which a line EL in a direction in which the endless belt means
11 spanned over the two pulleys extends intersects with a
direction FD in which the fiber bundle is fed. In such a way,
by disposing the endless belt 12 so that a sliver F is brought
into contact with the endless belt 12 only at the nip point N
and the feeding force in a direction in which the sliver F is
fed concentrates on the nip point N, a time consumed in which
one point on the endless belt 12 and the sliver F are again brought
into contact with each other is extended to delay progress in
wear, thereby enabling a longer lifetime in service to be realized.
Furthermore, since contact between the belt 12 and the sliver
F is concentrated to the nip point N, a contact portion of the
belt 12 with the sliver F is minimized, thereby enabling progress
in wear thereof to be further delayed.
In the invention, plural pairs of fiber feeding means
include: a pair of first feeding means Rf; a pair of second feeding
means R2 having aprons; a pair of third feeding means R3 and
a pair of fourth feeding means Rb in the order from the downstream
side, wherein each of the pairs of second, third and fourth feeding
means R2, R3 and Rb are constituted of a top roller 2 and bottom
roller 3 combined and the pair of first feeding means Rf is
constituted of the endless belt means 11 and a bottom roller
3 combined. Each of these pairs of fiber feeding means is higher
in speed toward the downstream side. The endless belt 12 is
composed of a pair of fiber feeding means having the highest
fiber feed speed in the most downstream side, that is disposed
in the pair of first feeding means Rf.
As examples to which a drafting apparatus related to the
invention is applied, presented are techniques concerning a
spinning member capable of high speed spinning at 200 m/min or
higher by twisting a sliver F with the action of a vortex air
stream. To be detailed, the well-known techniques are as
follows:
Description will be given of a spinning member using a
vortex air stream with a construction in which a yarn is produced
with the action of the hollow guide shaft and the air-spin nozzle
described in the item (1) based on Fig. 5. The spinning member
S is, as shown in Fig. 5, constituted of a nozzle block 4 and
a hollow guide shaft 5, the spinning member S in which a drafted
sliver F is fed to the nozzle block 4 and the hollow guide shaft
5. The nozzle block 4 has an air-spin nozzle 6, and a sliver
F is influenced by a vortex air stream from the air-spin nozzle
at the distal end of the hollow guide shaft 5 and then guided
into a yarn passage 7 in the hollow guide shaft 5. Thereby,
a truly twisted-like spun yarn is spun to produce a yarn Y. Thus
produced yarn Y is guided to a take-up drum 8 by way of a delivery
roller Rd and wound thereon as a wound package 9. A structure
of a yarn Y is defined by a ratio in peripheral speed between
the front roller Rf and the delivery roller Rd, that is an
expansion/shrinkage degree in the spinning member S.
In the spinning machine described in the item (3), as shown
in Fig. 4, a sliver F is drafted through the front roller Rf,
the second roller R2 and the third roller R3, thereafter, guided
into an air nozzle S1 and a pair of twisting rollers T constituting
a spinning member S and a fiber bundle is twisted by a cooperative
action of the air nozzle S1 and the twisting rollers T. A twisting
efficiency of the combination is high with the result that a
yarn can be spun at a high speed (200 m/min or higher). The
effect of a longer lifetime in service in the invention is more
conspicuous with a higher spinning speed, that is with a higher
feed speed of the drafting apparatus D.
In a case of a high speed spinning at a spinning speed
of 200 m/min or higher, in the drafting apparatus, a sliver F
passes through between a top apron and bottom apron of the second
roller R2 and guided to the front roller Rf, at which time diffusion
of a fiber bundle occurs by the action of an accompanying air
stream reaching the nip point N on the front roller Rf, arising
a tendency of poor uniformity in spinning.
In the invention, therefore, a pulley 14 for bringing the
endless belt 12 into contact with the nip point N has the
protrusions 16 and 17 formed outwardly from the both ends 12a
and 12a of the endless belt 12 in the width direction thereof
and the level difference portions d are formed between each of
the protrusions 16 and 17, and the contact portion at the nip
point N of the endless belt 12. That is, if an outer diameter
of the pulley 14 is set to 1, an outer diameter of the protrusions
16 and 17 is set to 2 and a thickness of the endless belt 12
is set to t by definition, the level difference portions d are
formed if setting is made so as to establish a relation of [ ( 2
- 1) /2] < t. With such a structure adopted, the accompanying
air stream is escaped from the level difference portions d to
thereby prevent a feed of a sliver F from being put in disorder,
which results in the effects not only of realization of a longer
lifetime in service but also of prevention of lowering in physical
properties of a yarn. All of the above discussions being
considered, in the embodiment, by suppression of a change with
time in feeding of a sliver F accompanied by the use of members
over a long term and an instant change in feeding of a sliver
F caused by the accompanying air stream, a change in feeding
a sliver F can be the smallest possible level. Therefore, in
the embodiment, a stable drafting is ensured to thereby enable
a uniform yarn quality to be obtained all the time.
Note that while in the embodiment, description is given
of a case where a drafting apparatus D related to the invention
is applied to a spinning machine using a vortex air stream, the
invention is not limited the this application and can also applied
to any of fiber processing machines each installed with a drafting
apparatus such as a roving machine, slivering machine and a ring
fine spinning machine.
In a conventional drafting apparatus using rubber rollers,
the rubber rollers are rotatably supported by and mounted on
shafts with bearings or the like interposed therebetween, which
has caused a problem that in a step of exchange, a complex operation
is required, while with the endless belt 12 adopted in the
apparatus as in the invention, the endless belt 12 is only released
from the tension state imparted by the pulleys 14 and 15, which
enables the endless belt 12 to be exchanged with ease, thereby
further enabling improved maintenance to be realized.
According to a drafting apparatus according to the
invention, one of the pair of the fiber feeding means is
constituted of an endless belt to thereby enable a longer lifetime
in service of the fiber feeding means to be realized; thereby
enabling the desired object to be achieved.
Claims (6)
- A drafting apparatus including a pair of fiber feeding means for transporting a fiber bundle to the downstream side while grasping the fiber bundle at a nip point and stretching it, characterized in that one of the pair of fiber feeding means is constituted of an endless belt, and the pair of fiber feeding means is provided so that a feeding force acting in a direction of feeding the fiber bundle with the endless belt is concentrated on the nip point.
- The drafting apparatus set forth in claim 1, characterized in that a tension is imparted to the endless belt in state of being wound around at least two pulleys, one of the at least two pulleys works to bring the endless belt into contact with the nip point so as to form the nip point, the at least two pulleys are disposed so that a direction in which the endless belt extends between the at least two pulleys intersects with a direction in which the fiber bundle is fed and the endless belt is wound around the at least two pulleys.
- The drafting apparatus set forth in claim 1 or 2, characterized in that plural pairs of feeding means thereof provided so as to be higher in feed speed of a pair of feeding means toward the downstream, wherein the endless belt is disposed in a pair of fiber feeding means having the highest fiber feed speed in the most downstream side.
- The drafting apparatus set forth in claim 3, characterized in that the pulley for bringing the endless belt into contact with the nip point has protrusions formed outwardly from the both ends of the endless belt in the width direction thereof and level difference portions are formed between the protrusions and a contact portion at the nip point of the endless belt.
- The drafting apparatus set forth in any one of claims 1 to 4, characterized in that the pair of fiber feeding means one of which is constituted of an endless belt is used in a spinning machine installed with a spinning member twisting a drafted fiber bundle with the action of a vortex air stream thereon.
- The drafting apparatus set forth in claim 5, characterized in that the spinning member is constituted of an air-spin nozzle generating a vortex air stream and a hollow guide shaft having a passage for a produced yarn.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003424665 | 2003-12-22 | ||
| JP2003424665A JP2005179857A (en) | 2003-12-22 | 2003-12-22 | Drafting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1548162A2 true EP1548162A2 (en) | 2005-06-29 |
| EP1548162A3 EP1548162A3 (en) | 2006-12-20 |
Family
ID=34544929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04027376A Withdrawn EP1548162A3 (en) | 2003-12-22 | 2004-11-18 | Drafting apparatus with fiber feeding means having longer service lifetime |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1548162A3 (en) |
| JP (1) | JP2005179857A (en) |
| CN (1) | CN1637179A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007101742A1 (en) * | 2006-03-08 | 2007-09-13 | Deutsche Institute für Textil- und Faserforschung Stuttgart | Wearing coating for delivery rollers of a drawing roller frame |
| WO2010016808A1 (en) * | 2008-08-04 | 2010-02-11 | Ozdilek Alisveris Merkezleri Ve Tekstil Sanayi Anonim Sirketi | Compact yarn manufacturing system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117181A (en) * | 2010-12-03 | 2012-06-21 | Toyota Industries Corp | Draft machine for drawing process |
| CN104963051B (en) * | 2015-07-09 | 2018-03-13 | 上海兰邦工业纤维有限公司 | Mechanical compact spinning manufacture aramid fiber yarn and its method, apparatus of aramid fiber covering yarn and the aramid fiber covering yarn of preparation |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE816069C (en) * | 1950-03-08 | 1951-10-08 | Deutscher Spinnereimaschb Ingo | Drafting system for spinning machines |
| GB1184787A (en) * | 1960-11-20 | 1970-03-18 | Mackie & Sons Ltd J | Improvements relating to Textile Drafting Apparatus |
| DE10260025A1 (en) * | 2002-12-19 | 2004-07-08 | Deutsche Institute für Textil- und Faserforschung (DITF) | Coating for drafting rollers |
-
2003
- 2003-12-22 JP JP2003424665A patent/JP2005179857A/en active Pending
-
2004
- 2004-11-18 EP EP04027376A patent/EP1548162A3/en not_active Withdrawn
- 2004-12-22 CN CN 200410103731 patent/CN1637179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007101742A1 (en) * | 2006-03-08 | 2007-09-13 | Deutsche Institute für Textil- und Faserforschung Stuttgart | Wearing coating for delivery rollers of a drawing roller frame |
| US8099835B2 (en) | 2006-03-08 | 2012-01-24 | Deutsche Institute fur Textile-und Faserforschung Stuttgart | Wearing coating for delivery rollers of a drawing roller frame |
| WO2010016808A1 (en) * | 2008-08-04 | 2010-02-11 | Ozdilek Alisveris Merkezleri Ve Tekstil Sanayi Anonim Sirketi | Compact yarn manufacturing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005179857A (en) | 2005-07-07 |
| CN1637179A (en) | 2005-07-13 |
| EP1548162A3 (en) | 2006-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3503704B2 (en) | Draft fiber strand bundling device | |
| JP3657314B2 (en) | Spinning method and spinning machine | |
| US6318060B1 (en) | Method and spinning machine for the production of core yarn | |
| JP3554227B2 (en) | Apparatus for condensing drafted fiber strands | |
| US6131383A (en) | Spinning machine having a drafting frame provided with a suction roller | |
| US6185790B1 (en) | Arrangement for condensing a drafted fiber strand | |
| US6131382A (en) | Method of and apparatus for making a mock yarn | |
| US6209303B1 (en) | Arrangement and method for spinning a yarn | |
| CN1602373A (en) | Stretching machines for endless textile machines with fiber belt compressors | |
| JP2000073224A (en) | Spinning machinery having a plural number of spinning stations | |
| US4718225A (en) | Pneumatic spinning machine | |
| JP2007506007A (en) | Manufacturing method and manufacturing apparatus for core yarn or core strand | |
| CN1298904C (en) | Spinning machine for producing core-spun yarn | |
| EP1548162A2 (en) | Drafting apparatus with fiber feeding means having longer service lifetime | |
| US6298523B1 (en) | Apparatus for condensing a fiber strand and a method of making yarn using same | |
| CN1589342A (en) | Device on a spinning machine for compacting a fibre assembly | |
| JP2004512434A (en) | Spinner equipment for condensing fiber strands | |
| JP2003313735A (en) | Spinner equipment for condensing fiber strands | |
| US6338183B1 (en) | Arrangement for condensing a fiber strand | |
| EP2072647B1 (en) | Draft roller | |
| JP2003313734A (en) | Apparatus for producing mock ply yarn | |
| JP2002235252A (en) | Assembly for spinning machines for condensing fiber strands | |
| Kumar et al. | Compact spinning: a critical review | |
| US7076840B2 (en) | Draft device | |
| JP5398948B2 (en) | Method and apparatus for manufacturing a core yarn |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK YU |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK YU |
|
| AKX | Designation fees paid |
Designated state(s): CH DE LI |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20070621 |