EP0047348B1 - Apparatus for drawing filamentary polymeric material - Google Patents
Apparatus for drawing filamentary polymeric material Download PDFInfo
- Publication number
- EP0047348B1 EP0047348B1 EP80303086A EP80303086A EP0047348B1 EP 0047348 B1 EP0047348 B1 EP 0047348B1 EP 80303086 A EP80303086 A EP 80303086A EP 80303086 A EP80303086 A EP 80303086A EP 0047348 B1 EP0047348 B1 EP 0047348B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- rollers
- motorized
- polymeric material
- turret
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
Definitions
- the present invention relates to the manufacture of synthetic filamentary polymeric structures.
- it relates to the stretching of the filamentary polymeric structures without any operator exposure to moving rollers during string-up from source to take-up.
- Stretched filaments of synthetic high polymers have been conventionally produced in good yields for many years in two distinct process stages, which are separated from one another in respect of both space and time. That is to say, spinning is first accomplished, generally at speeds up to about 1000 to 1200 meters per minute, followed by a separate drawing step which is accomplished on a draw- twisting or draw-winding machine.
- a more recently developed method of obtaining stretched filaments of synthetic high polymers comprehends spinning and stretching continuously, as in the so-called “spin-draw” processes, the latest modifications of which continuously combine spinning, stretching, and winding with interlacing (or intermingling) and/or texturizing.
- the so-called “draw-texturizing” processes continuously combine stretching and winding with texturizing (and interlacing).
- a device for drawing filamentary polymeric material characterised by spaced apart first (1a) and second (1b) roller turrets (1) each comprising two motorized rollers (A, B; C, D) which rollers are spaced from each other by means of a cross-member (2) carrying the shafts (4) of the said rollers, the roller turrets (1) having a first position providing for passage of filamentary polymeric material (8) from a source of supply thereof through the space between the motorized rollers of the first turret (1a), through the space between the motorized rollers of the second turret (1 b), and to a means for winding the filamentary polymeric material into a package on a support; and means for rotating each roller turret (1 a, 1b) in either a clockwise or counterclockwise direction through an angle less than 360° to a second position providing for contact of the filamentary polymeric material (8) with the surface of each motorized roller over a surface angle of less than 360°;
- the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the upstream and downstream motorized rollers when these rollers are caused to move.
- String-up from source to take-up has been effected simply and efficiently and without any operator exposure to moving rollers, and the device has been advanced into the operation mode, free of any complexity.
- An especially desirable and preferred embodiment of the present invention provides a device for drawing filamentary polymeric material comprising first and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which are spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof, the motorized rollers of the first turret being designed to operate at a surface velocity of V 1 and V 2 respectively, and the motorized rollers of the second turret being designed to operate at a surface velocity of V 3 and V 4 respectively, wherein Vl:5V2, V3:5V4, and V 2 ⁇ V 3 , the roller turrets having a first position providing for passage of filamentary polymeric material from a source of supply thereof through the space between the motorized rollers of the first turret, thence through the space between the motorized rollers of the second turret, and thence to a means for winding the filamentary polymeric material into a package on a support; and means for rotating each roller
- the surfaces of the motorized rollers should have a surface roughness height index value of 32 RMS or less.
- filamentary polymeric material is wound into a package at speeds up to and including 6,000 meters per minute.
- such embodiment additionally comprises (a) sensing means positioned downstream from the second roller turret for the detection of a break in the moving threadline of the filamentary polymeric material coupled with (b) interrupting means for stopping the rotation of the motorized rollers and returning the roller turrets to the first defined position thereof.
- roller turret (1 a) has two motorized rollers (A) and (B), which are spaced from each other and communicate with each other by means of cross-member (2), joining shafts (4) of rollers (A) and (B).
- Roller turret (1 b) has two motorized rollers (C) and (D), which are spaced from each other and communicates with each other by means of cross member (2 1 ), joining shafts (4) of rollers (C) and (D).
- Motorized roller (A) is designed to operate at a surface velocity of V 1 ; motorized roller (B), of V 2 ; motorized roller (C), of V 3 ; and motorized roller (D), of V 4 .
- Surface velocity V 1 is less than or equal to V 2 ; surface velocity V 3 is less than or equal to V 4 ; and V 2 is less than V 3 .
- Fig. 1 depicts roller turrets (1a) and (1b) being disposed in a first position providing for passage of filamentary polymeric material (8) from a source of supply thereof (not shown) through the space between motorized rollers (A) and (B), thence through the space between motorized rollers (C) and (D), and thence to a means for winding the filamentary polymeric material into a package on a support (not shown).
- roller turrets (1 a) and (1 b) are caused to rotate to a second position as shown in Fig. 2.
- the rotation of the individual roller turrets may be either in a clockwise or counterclockwise direction.
- roller turret (1a) is shown as having been rotated in a counterclockwise direction
- roller turret (1b) is shown as having been rotated in a clockwise direction, presenting a configuration which is very conveniently and advantageously employed.
- the rotation of each roller turret should be through an angle of less than 360°.
- filamentary polymeric material (8) adheres to the surfaces of the motorized rollers without slippage and is drawn between the first and second roller turrets. Especially good results are achieved when the surfaces of the motorized rollers have a surface roughness height index value of 32 RMS or less, and most advantageously 10 RMS or less. Under such conditions, filamentary polymeric material (8) is drawn and wound onto a package at speeds up to and including 6,000 meters per minute.
- V 1 V 2 , within the range 500 m/min to 3700 m/min;
- V 3 V 4 , within the range 1800 m/min to 4700 m/min;
- v 2 being in any event less than V 3 .
- the filamentary polymeric material (8) is ordinarily treated with water or an appropriate standard finish composition before being stretched in a device according to the present invention.
- sensing means (5) which is positioned downstream from the second roller turret, detects any interruption in the moving threadline of the filamentary polymeric material (8).
- sensing means which are usually based upon photoelectric, capacitance, or pneumatic principles, are readily available commercially.
- the output signal from such sensing means (5) which is indicated by the dotted line emanating therefrom, is transmitted to interrupting means (7), which stops the rotation of the individual motorized rollers and effects the return of the roller turrets to their first defined position, as set forth hereinabove.
- interrupting means (7) which stops the rotation of the individual motorized rollers and effects the return of the roller turrets to their first defined position, as set forth hereinabove.
- the output signal from sensing means (5) may be transmitted to standard cutting means (6), which severs the threadline of the filamentary polymeric material (8), in order to prevent fouling of the motorized rollers and to facilitate a subsequent string-up procedure.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
Description
- The present invention relates to the manufacture of synthetic filamentary polymeric structures. In particular, it relates to the stretching of the filamentary polymeric structures without any operator exposure to moving rollers during string-up from source to take-up.
- Stretched filaments of synthetic high polymers have been conventionally produced in good yields for many years in two distinct process stages, which are separated from one another in respect of both space and time. That is to say, spinning is first accomplished, generally at speeds up to about 1000 to 1200 meters per minute, followed by a separate drawing step which is accomplished on a draw- twisting or draw-winding machine. A more recently developed method of obtaining stretched filaments of synthetic high polymers comprehends spinning and stretching continuously, as in the so-called "spin-draw" processes, the latest modifications of which continuously combine spinning, stretching, and winding with interlacing (or intermingling) and/or texturizing. Similarly the so-called "draw-texturizing" processes continuously combine stretching and winding with texturizing (and interlacing). Exemplary of the aforementioned processes are the inventions disclosed in the following patents: U.S. 2,289,860; U.S. 3,452,130; U.S. 4,035,464; U.S. 3,555,808 and U.S. 3,448,186.
- Notwithstanding the efficacy of these and similar processes involving the drawing of filamentary polymeric material, they are all found wanting in one important aspect; viz., string-up from source to take-up is not simply and efficiently accomplished, especially in coupled processes, and there is considerable operator exposure to rollers moving at very high speeds. The present invention, which obviates these difficulties and inadequacies of the prior art, is nowhere disclosed or remotely suggested by any of the processes or devices of the prior art.
- According to the present invention there is provided a device for drawing filamentary polymeric material, characterised by spaced apart first (1a) and second (1b) roller turrets (1) each comprising two motorized rollers (A, B; C, D) which rollers are spaced from each other by means of a cross-member (2) carrying the shafts (4) of the said rollers, the roller turrets (1) having a first position providing for passage of filamentary polymeric material (8) from a source of supply thereof through the space between the motorized rollers of the first turret (1a), through the space between the motorized rollers of the second turret (1 b), and to a means for winding the filamentary polymeric material into a package on a support; and means for rotating each roller turret (1 a, 1b) in either a clockwise or counterclockwise direction through an angle less than 360° to a second position providing for contact of the filamentary polymeric material (8) with the surface of each motorized roller over a surface angle of less than 360°; whereby the filamentary polymeric material (8) adheres to the surfaces of the motorized rollers (A, B; C, D) without slippage and is drawn between the first and second roller turrets when the motorized rollers are rotated to effect string-up from source to take-up simply and without any operator exposure to moving rollers.
- As a result, the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the upstream and downstream motorized rollers when these rollers are caused to move. String-up from source to take-up has been effected simply and efficiently and without any operator exposure to moving rollers, and the device has been advanced into the operation mode, free of any complexity.
- An especially desirable and preferred embodiment of the present invention provides a device for drawing filamentary polymeric material comprising first and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which are spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof, the motorized rollers of the first turret being designed to operate at a surface velocity of V1 and V2 respectively, and the motorized rollers of the second turret being designed to operate at a surface velocity of V3 and V4 respectively, wherein Vl:5V2, V3:5V4, and V2<V3, the roller turrets having a first position providing for passage of filamentary polymeric material from a source of supply thereof through the space between the motorized rollers of the first turret, thence through the space between the motorized rollers of the second turret, and thence to a means for winding the filamentary polymeric material into a package on a support; and means for rotating each roller turret in either a clockwise or counterclockwise direction through an angle less than 360° to a second position providing for contact of the filamentary polymeric material with the surface of each motorized roller over a surface angle of less than 360°.
- For the very best results, the surfaces of the motorized rollers should have a surface roughness height index value of 32 RMS or less.
- When the aforementioned preferred embodiment of the present invention is employed, filamentary polymeric material is wound into a package at speeds up to and including 6,000 meters per minute.
- Moreover, it has been found to be especially advantageous in the employment of the aforementioned preferred embodiment of the present invention if such embodiment additionally comprises (a) sensing means positioned downstream from the second roller turret for the detection of a break in the moving threadline of the filamentary polymeric material coupled with (b) interrupting means for stopping the rotation of the motorized rollers and returning the roller turrets to the first defined position thereof.
- It is very convenient in the utilization of the aforementioned preferred embodiment of the present invention if the roller turrets thereof are rotated from the first to the second defined position thereof through an angle of about 250°; and most conveniently if the first roller turret is rotated in a counterclockwise direction, and the second roller turret is rotated in a clockwise direction. Under such conditions, optimum results are conveniently achieved when the surface velocities of the motorized rollers are defined by the following relationships: V1=V2; V3=V4; and V2<V3.
- The present invention will now be described further, by way of example only, with reference to the accompanying drawings, in which:-
- Fig. 1 is a perspective view, schematically representing an especially preferred embodiment of the present invention in a first defined position thereof, as hereinafter explained in detail;
- Fig. 2 is a perspective view schematically representing the same embodiment in a second defined position thereof, as hereinafter explained in detail; and
- Fig. 3 is a side view, schematically representing the embodiment of Figs. 1 and 2, which is provided with additional cooperative components.
- Referring now to the drawings, a particularly preferred embodiment of the present invention (1) is shown in Figs. 1 and 2. The embodiment comprises first roller turret (1 a) and second roller turret (1 b). Roller turret (1 a) has two motorized rollers (A) and (B), which are spaced from each other and communicate with each other by means of cross-member (2), joining shafts (4) of rollers (A) and (B). Roller turret (1 b) has two motorized rollers (C) and (D), which are spaced from each other and communicates with each other by means of cross member (21), joining shafts (4) of rollers (C) and (D). Motorized roller (A) is designed to operate at a surface velocity of V1; motorized roller (B), of V2; motorized roller (C), of V3; and motorized roller (D), of V4. Surface velocity V1 is less than or equal to V2; surface velocity V3 is less than or equal to V4; and V2 is less than V3.
- Fig. 1 depicts roller turrets (1a) and (1b) being disposed in a first position providing for passage of filamentary polymeric material (8) from a source of supply thereof (not shown) through the space between motorized rollers (A) and (B), thence through the space between motorized rollers (C) and (D), and thence to a means for winding the filamentary polymeric material into a package on a support (not shown).
- By means of pivots (3) and (31), roller turrets (1 a) and (1 b) are caused to rotate to a second position as shown in Fig. 2. The rotation of the individual roller turrets may be either in a clockwise or counterclockwise direction. In Fig. 2, roller turret (1a) is shown as having been rotated in a counterclockwise direction, and roller turret (1b) is shown as having been rotated in a clockwise direction, presenting a configuration which is very conveniently and advantageously employed. The rotation of each roller turret should be through an angle of less than 360°. Fig. 2 shows the rotation of roller turret (1 a) through an angle of about 250° and the rotation of roller turret (1 b) through an angle of about 250°, presenting a configuration which has been found to be especially useful. As a result of rotation of the individual roller turrets to the second position thereof, filamentary polymeric material (8) is caused to contact the surface of the motorized rollers over a surface angle of less than 360°, as seen in Fig. 2. When rollers (A), (B), (C), and (D) caused to rotate at surface velocities Vj, V2, V3, and V4, respectively, as hereinbefore set forth, filamentary polymeric material (8) adheres to the surfaces of the motorized rollers without slippage and is drawn between the first and second roller turrets. Especially good results are achieved when the surfaces of the motorized rollers have a surface roughness height index value of 32 RMS or less, and most advantageously 10 RMS or less. Under such conditions, filamentary polymeric material (8) is drawn and wound onto a package at speeds up to and including 6,000 meters per minute. For special convenience in operation and very advantageous results, the following relationships have been determined: V1=V2, within the range 500 m/min to 3700 m/min; V3=V4, within the range 1800 m/min to 4700 m/min; v2 being in any event less than V3. The filamentary polymeric material (8) is ordinarily treated with water or an appropriate standard finish composition before being stretched in a device according to the present invention.
- Referring now to Fig. 3, there is shown the same embodiment depicted in Figs. 1 and 2, except that there are additional elements cooperating in the basic combination. In particular, sensing means (5), which is positioned downstream from the second roller turret, detects any interruption in the moving threadline of the filamentary polymeric material (8). Such sensing means, which are usually based upon photoelectric, capacitance, or pneumatic principles, are readily available commercially. The output signal from such sensing means (5), which is indicated by the dotted line emanating therefrom, is transmitted to interrupting means (7), which stops the rotation of the individual motorized rollers and effects the return of the roller turrets to their first defined position, as set forth hereinabove. Such mechanisms are readily available commercially. In addition, the output signal from sensing means (5) may be transmitted to standard cutting means (6), which severs the threadline of the filamentary polymeric material (8), in order to prevent fouling of the motorized rollers and to facilitate a subsequent string-up procedure.
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP80303086A EP0047348B1 (en) | 1980-09-04 | 1980-09-04 | Apparatus for drawing filamentary polymeric material |
DE8080303086T DE3068354D1 (en) | 1980-09-04 | 1980-09-04 | Apparatus for drawing filamentary polymeric material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP80303086A EP0047348B1 (en) | 1980-09-04 | 1980-09-04 | Apparatus for drawing filamentary polymeric material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0047348A1 EP0047348A1 (en) | 1982-03-17 |
EP0047348B1 true EP0047348B1 (en) | 1984-06-27 |
Family
ID=8187253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80303086A Expired EP0047348B1 (en) | 1980-09-04 | 1980-09-04 | Apparatus for drawing filamentary polymeric material |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0047348B1 (en) |
DE (1) | DE3068354D1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0150301A2 (en) * | 1983-12-01 | 1985-08-07 | b a r m a g Barmer Maschinenfabrik Aktiengesellschaft | Apparatus for drawing bundles of synthetic yarns |
FR2618169B1 (en) * | 1987-07-15 | 1990-01-05 | Bene Madinox | DEVICE FOR AUTOMATICALLY RELEASING FABRIC IN HOSE DYEING MACHINES. |
US4852225A (en) * | 1988-06-27 | 1989-08-01 | Mccoy-Ellison, Inc. | Draw warping apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2296473A (en) * | 1938-05-13 | 1942-09-22 | John J Krehbiel | Godet arrangement |
GB614978A (en) * | 1945-07-26 | 1948-12-30 | Du Pont | A new and improved device for advancing filaments and the like under tension |
US2621390A (en) * | 1947-04-14 | 1952-12-16 | Ici Ltd | Roll system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1710644A1 (en) * | 1967-06-27 | 1971-12-30 | Neumuenster Masch App | Device for stretching threads and ribbons |
-
1980
- 1980-09-04 EP EP80303086A patent/EP0047348B1/en not_active Expired
- 1980-09-04 DE DE8080303086T patent/DE3068354D1/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2296473A (en) * | 1938-05-13 | 1942-09-22 | John J Krehbiel | Godet arrangement |
GB614978A (en) * | 1945-07-26 | 1948-12-30 | Du Pont | A new and improved device for advancing filaments and the like under tension |
US2621390A (en) * | 1947-04-14 | 1952-12-16 | Ici Ltd | Roll system |
Also Published As
Publication number | Publication date |
---|---|
DE3068354D1 (en) | 1984-08-02 |
EP0047348A1 (en) | 1982-03-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0438421B1 (en) | Improved process for high speed, multi-end polyester high performance tire and industrial yarn | |
US3235191A (en) | Yarn winding process and yarn package | |
US3091908A (en) | Apparatus and method for false twisting yarns | |
JPH07117150A (en) | Method and apparatus for taking up narrow sheet member | |
US3137987A (en) | Method and apparatus for drawtwisting yarn | |
KR100511697B1 (en) | Device for manufacturing a composite yarn | |
GB1394263A (en) | Drawing and falsetwisting method and machine | |
US4570312A (en) | Method and apparatus for producing entangled yarn | |
US3427912A (en) | Process for preparation for splitting fiber and its apparatus for the same | |
EP0047348B1 (en) | Apparatus for drawing filamentary polymeric material | |
US4308716A (en) | Apparatus for applying liquid to a running yarn | |
US3527043A (en) | Means and process for producing a false twist by friction | |
GB1485794A (en) | Method of manufacturing a textured yarn | |
US3805344A (en) | Variable feed means for jet texturing apparatus | |
DE19625512A1 (en) | Method and device for determining the diameter of a cheese | |
GB1260550A (en) | An improved apparatus for manufacturing a fluffy yarn | |
US4825517A (en) | Apparatus for drawing and interlacing | |
US4362260A (en) | Yarn feeding apparatus | |
JPH04507079A (en) | Reciprocating yarn guide | |
CA1134575A (en) | Linear draw system | |
GB1422536A (en) | Unstretched polyethylene terephthalate yarn in continuous stretching and false twist texturizing processes | |
US3964657A (en) | Yarn transporting apparatus | |
US4204394A (en) | Device relating to apparatus for texturing textile yarns | |
US4112667A (en) | Apparatus and process suitable for twist-drawing a yarn | |
MXPA04006527A (en) | Yarn making process and apparatus. |
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 |
Designated state(s): BE DE FR GB IT NL |
|
17P | Request for examination filed |
Effective date: 19820420 |
|
ITF | It: translation for a ep patent filed |
Owner name: ING. C. GREGORJ S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): BE DE FR GB IT NL |
|
REF | Corresponds to: |
Ref document number: 3068354 Country of ref document: DE Date of ref document: 19840802 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19840906 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19840919 Year of fee payment: 5 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19840930 Year of fee payment: 5 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19870930 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19890904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Effective date: 19890930 |
|
BERE | Be: lapsed |
Owner name: BADISCHE CORP. Effective date: 19890930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19900401 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19900531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19900601 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |