CA1197148A - Method and apparatus for applying liquid to a moving threadline - Google Patents
Method and apparatus for applying liquid to a moving threadlineInfo
- Publication number
- CA1197148A CA1197148A CA000393930A CA393930A CA1197148A CA 1197148 A CA1197148 A CA 1197148A CA 000393930 A CA000393930 A CA 000393930A CA 393930 A CA393930 A CA 393930A CA 1197148 A CA1197148 A CA 1197148A
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- atomizing surface
- atomizing
- threadline
- passage
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
- B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An ultrasonic vibrator of the type used to atomize liquid is used for applying liquid finish to a moving threadline. The liquid is supplied to a through passage in the tip of the horn of the vibrator in which it is atomized and applied to the threadline which is moving through the passage in the tip of the horn.
An ultrasonic vibrator of the type used to atomize liquid is used for applying liquid finish to a moving threadline. The liquid is supplied to a through passage in the tip of the horn of the vibrator in which it is atomized and applied to the threadline which is moving through the passage in the tip of the horn.
Description
a7~
~ITLE
METHOD AND APPARATUS FOR
APPLYING LIQUID TO A MOVING THREADLINE
DESCRIPTION
TECHNICAL FIELD
This invention generally relates to the manu-facture of synthetic fiber~, and more particularly, to an improved method and apparatus for applying liquid finishes to yarns, ribbons and tows.
BACKGROUND ART
In the manufacture of synthetic yarns, it is a common practice to apply a composition of chemical ingredients in liquid form to threadlines of the yarn.
Conventionally, th~se liquid finishes are applied by advancing the running yarn threadline in contact with the surface of a roll rotated in a liquid resexvoir containing the desired finish or by means of stationary applicator tips or sprays supplied from metering pumps. Finish compositions have traditionally been limited to low viscosity solutions or emulsions of oils in (large amounts of) water. Neither the low viscosity nor the water are always required by the fiber, but are dictated by the above-noted conventional inish applicators which are incapable of handli~g high~viscosity fluids adequately and without imposing excessive drag upon the threadline. Nonaqueous re~
placements for water that are nontoxic, nonfl~mm~hle and low cost are unavailable. Thus, current textile technology is somewhat limlted by the shortcomings of the conventional finish applicators. These have imposed limitations in the processing o~ fibers, restricted the available products and added to the cost of fiber production. In addition, some of ~he aqueous ~inishes ha~Je poor roll wetting properties and others RD-2820 35 suffer from poor emulsion stability.
~,:
SUMMARY OF THE INVENTION
This inventlon provides a new dimension for finish application to a threadline of yarn which alleviates the above shortcomings. The method and apparatus o~ the invention has the capability of applying low and high viscosity fluids of all types and compositions whether aqueous or nonaqueous, homo~
geneous or nonhomogeneous, emulsifiable or nonemulsi-fiable, wetting or nonwetting, etc~ The method involves supplying a liquid finish in a continuous metered stream to an atomizing surface on the tip of an ultrasonic vibrator then atomizing and propelling the liquid onto the yarn by means of the vibrator while the threadline is being passed in close proximity to lS the tip of ~he vibratox. Gear pumps are utilized to supply precisely metered streams of finish or ingredients per threadline to the vibrating finish applicators. Where two or more fluid streams are required per threadline the fluids are supplied in me~ered streams to a mixing zone immediately ahead of the point of application where they are blended prior to or during a~omizaticn or they may proceed directly to the tip of the applicator as separate streams. In a preferred embodiment of the apparatus the through passage in the tip of the ultrasonic vibrator is formed to converge the filaments of the threadline into a coherent bundle and an angled slot is pro~ided in the tip leading into the through passage to facilitate stringup.
In addition to atomizing and propelling the liquid finish onto the yarn, the vibrations also warm the finish slightly, homogenize separate finish ingredien~s, clean the orifice in the atomizing sur-face of the tip of the vibrator and mi nl mi ze yarn friction within the vibrating finish applicator.
~7~
BRTEF DESCRIPTIOM OF TE~E DRAWI~IGS
Fig. 1 is a schematic drawing showing use of the subject inish applicators at two loca~ions in a yarn manufacturing operation.
Fig. 2 is a schematic side elevation view of the vibrator used as a finish applicator at a first location.
Fig. 3 is an end view of the tip of a vibrator at the first location.
Fig. 4 is a section of ~ig. 3 taken along line 4-4.
Fig. 5 i5 a top view of Fig. 3.
Fig. 6 is a schematic side elevation view of the vibrator used as a finish applica~or at a second location in the yaxn bulking operation.
Fig. 7 is a section of Fig. 6 taken along line 7-7O
Figs. 8 through lla are side and fro~t elevation views of the end of the horn for various open tip designs used when a single rather than multiple yarn threadline is to be ~reated with liquid.
Figs. 1~, 13 and 14 are a top view and an end elevation view of a horn for use when treating a single yarn threadline with two separate streams of liquid.
DETAILED ~ESCRIPTION OF THE II,LUSTR~TED EMBODIMENTS
The process chosen for purposes of illustra-tion in Fig. 1 includes a yarn 12 being spun as two separate threadlines from a spinneret 14 and each threadline is forwarded through the passages in the tip of the horn 16 of a first vibrating finish appli-cator generally designated 18. Next the threadline passes around feed roll 20 and its associated separator roll 22 around draw pin assembles 2a, 26 to draw rolls 28 where it is forwarded ~y the rolls 7~
28 at a constant speed through yarn guides 30 and through the yarn passageways 32 of the jet bulking devices 34. In the jets 34 the threadlines 12 are subjected to the bulking action of a hot fluid directed through inlets 36 (only one shown). The hot fluid exhausts with the threadline against a ro~ating drum 38 having a perforated surface on which the yarn cools to set the crimp. From the drum the threadlines in bulky form pass to a guide 39 and in a path over a pair of guides 17 past the end of the second vibratox 18' ~hen to a pair of driven take-up roll~ 40. Bulky yarns of this type are disclosed in U.S. Patent No. 3,186,155 to Breen and Lauterbach. The threadlines are then directed through fixed guides 42 and traversing guides 44 onto rotating cores 46 to form packages 48.
In Fig. 2 the vibrating finish applicator 18 is supplied with liquid finish by means of a year pump 15 connected to a reservoir 13. The gear pump supplies a precisely metered stream of liquid finish via pipe 17 to an internal axial passage 19 in the horn 16. A
closed applicator tip inside of which the yarn 12 me~ts the finish is either mounted on the end of or foxms an integral part of the horn of the ultrasonic vibrator. This structur2 is shown in more detail in Figs. 3-5 wherein the horn 16 has a pair of through passages 56, 58 each formed of successive tapered and cylindrical lengths designated 56a, 56b and 58a, 58b respectively. The passage~ 19 are connected to through passages 56, 58 via orifices 60 and angled slots 62, 64 are provided in commllnication with through passages 5~, 58 xespectively to facilitate stringup o continuous threadlines into the passagas.
In operation the liquid to be atomized and applied to the threadline 12 is precisely metered by pump 15 from reservoir 13 into the passages 19 in the ~7~
horn 16. The liquid flows onto a portion of the inner surface of passages 56, 58 ~hrough ori~ices 60 as a thin film then vibration of the thin liquid film breaks up or atomizes the liquid in the passages 56, 58 and propels it onto the threadlines moving through the passages. The vibrations of the horn are also trans-mitted to the threadline to reduce yarn friction in the passages at the tip of the horn and to aid in uniformly spreading the finish on the filaments of the threadline.
The vibra~ion of the tip atomizes ~he liquid and propels th~ atomized mist into the yarn bundle by dlsturbing the gas boundary layer accompanying the moving threadline.
This makes the threadline more receptive to the liquid and aids in uniformly distributing the liquid on and around the individual filaments in the yarn threadline.
The ultrasonic generator may ~e piezoelec-tric or magnetostrictive having a frequency in the range of from 10 to 100 KHZ, but preferably in the range of 20 to 50 KHZ.
Fig. 6 shows the vibrator 18' locate~ at the second location in the operation. This vibrator differs from the one described in Figs. 2-5 in that horn 1~' has an open tip desisn with two open-sided bottle-shaped passages 56', 58' in commllni cation with liquid suppl~ orifices 60' (Fig. 7). In additionr a shield 50 shaped as a hollow he~lisphere with slots for the threadlines to pass through is positioned beycnd the tip of the horn to collect excess liquid that may not be deposited on the yarn.
Figs. 8, 8a, 9, 9a and 11, lla are side and front elevations of the tips of horns having open-sided passa~es for yarn with varlous combinations of tapered, spherical and cylindrical lengths. These horns are illustrated for use with single threadli~es however, multiple threadline passage construction can also be s achieved. More particularly, Figs. 8, 8a disclose an open-sided tip with a groove 7 having successive tapered, cylindrical, tapered and reduced cylindrical lengths designated 7a, 7b, 7c and 7d respectively.
Figs. 10 and lOa illustrate a tip with an enclosed passage 7' with a stringup slot 8 leading into the pas-sage. The passage has the same configuration as the groove shown in Figs. 8, 8a, i.e. successive tapered, cylindrical, tapered and reduced cylindrical lengths.
In Figs. 9 and 9a the tip has a groove wilh successive tapered and cylindrical lengths 5 and 5a while Figs.
11, lla illus~rate the groove with successive tapered, cylindrical, spherical and cylindrical lengths deslg-nated 3a, 3b, 3c and 3d respectively.
~lthough a single liquid stream per thread-line has been illustrated, two or more liquid streams per threadline are contemplated. These may be trans-ported to a mixing zone immediately ahead of the point of application hy multiple passages inside the vibrating horn 16 allowing separation of the liquid streams until a location just ahead of where orifices 60 enter the through passages 56, 58. Another con-figuration for handling more than one metered stream per threadlin~ is shown in Figs. 12, 13 and 14 wherein separate liquid supply passages 60a and 60b lead to the inner surface o yarn slot 52 in the end of the horn.
These passages may be angled in relation to each other as in Fig. 12 or may be parallel to each other as in Fig. 14.
An additional feature of the applicators in Figs. 12 and 14 is that the yarn bundle is spread out evenly across the tip surface to enhance the txeatment of the individual filaments.
Polyhexamethyle~e adipamide having a relative 7~
viscosity of about 63 is melt spun into a yarn contain-ing 68 filaments and processed using apparatus similar to thak shown in Fig. 1 except that a second vibrating applicator 18' is not used. The spun filaments are passed through the tip of a vibrating flnish applicator 18 operating at 20 KHz and are forwarded to a feed roll running at a surface speed of 680 yards (624 meters) per minute. The applicator tip has the configuratlon shown in Fig. 3. A yarn finish is metered to the appli-cator tip where it is atomized and propelled into theyarn bundle which is in contact with the vibrating tip.
The finish is a combination of an oily lubricating composition and water. C~mh; n~ tions containing 7.5%, 15%, 30%, 50~ and 90~ by weight of the lubricatin~ com~
position are used. ~he combinations are found to have the following Brookfield viscosities 7.5%, 3.5 centi~
poises; 10~, 3.8 centipoises; 15%, 4.2 centipoises;
30%, 8.3 centipoises; 50~, 144.8 centipoises; and 90%, 1,100 to 1,200 centipoises. The meter pump i5 opexated to apply calculated amounts of 0.25%~ O.5%, 0.75% and 1.00~ by weight, based on the weight of the yarn, of ~he lubricating composition for each of the combina-tions. The concomitant amounts o water thus applied to the fiber were also calculated and are listed in Table I. The treated yarn was ~hen drawn to a denier of 1350 by draw rolls running at a surface speed of ~154 yards per minute (1976 meters/minute), then bulked and wound up. When conditions permitted, each run was continued for 20 minutes before the package was doffed; runs less than 20 minutes are indicative of troublesome operation. Table II shows that the process operated surprisingly well even with the 50%
and 90~ solutions which would have been too viscous for application by current normal means. Measurement ~La7~
of the resulting yarns indicated the effects of thP applied water upon yarn bulk, dyeability and quality, thus effectively demonstratins the extreme versatili~y and utility of this new method of finish application.
EXA~IPLE 2 A 1300 denier yarn is prepared in a manner similar to that described for (1) above except that the tip has only one hole and water and an oily lubri-cating composition are metered separately and themetered streams combined just prior to entry to the applicator. The lubricating composition is metered at 1.85 grams per minute and the water is mekered at 5.58 grams per minute. The process runs well. When the lubricating combination is emulsified in water in a separate step for roll application, it has poor emulsion stability and does not wet the roll well.
A 1300 denier yarn is prepared in a manner similar to that described for (1) above except that a second vibrating applicator 18', operating a~ 50 KHz, is used betweer. the drum and the forwardi~g rolls. A
yarn finish conta~ n j~g 15~ of an oily lubricating composition is applied from the second vibrating appli-cator. The yarn finish is metered at a rate to provide0.65~ by weight, based on the weight of the yarn, of the lubricating composition to the yarn. The yarn that is removed from the drum is essentially dry so that a measure of the moisture level of the yarn after it has passed the applicator is a measure o~ the amount o~
finish applied. The moisture measurement is a con-ductivity measurement and shows a significant increase when the vlbrating applicator is in operation ovex when the vibrating applicator is not vibrating.
4~
TABLE I
wt. percent water on yarn amount of finish wt. ~ercent of lubricating applied to yarn composi~ion in the finish 5 wt. percent go 50 30 15 7.5 0.250.028 0.25 0.58 1.42 3.08 O.S00.056 0.50 1.17 2.83 6.17 0.750.083 0.75 1.75 4.25 9.25 1.000.111 1.00 2.33 5.67 12.33 TABLE II
Doff length minutes wt. percent of lubricating amount of finish composition ln the finish appl~ed to yarn wt. percent 9o 50 30 157.5 0.25 5 20 20 17 20 0.50 20 20 22oo 20 13 18 20 20 ~0 15 0.75 ~0 20 20 ~0 20 1.00 20 4 20 16 2
~ITLE
METHOD AND APPARATUS FOR
APPLYING LIQUID TO A MOVING THREADLINE
DESCRIPTION
TECHNICAL FIELD
This invention generally relates to the manu-facture of synthetic fiber~, and more particularly, to an improved method and apparatus for applying liquid finishes to yarns, ribbons and tows.
BACKGROUND ART
In the manufacture of synthetic yarns, it is a common practice to apply a composition of chemical ingredients in liquid form to threadlines of the yarn.
Conventionally, th~se liquid finishes are applied by advancing the running yarn threadline in contact with the surface of a roll rotated in a liquid resexvoir containing the desired finish or by means of stationary applicator tips or sprays supplied from metering pumps. Finish compositions have traditionally been limited to low viscosity solutions or emulsions of oils in (large amounts of) water. Neither the low viscosity nor the water are always required by the fiber, but are dictated by the above-noted conventional inish applicators which are incapable of handli~g high~viscosity fluids adequately and without imposing excessive drag upon the threadline. Nonaqueous re~
placements for water that are nontoxic, nonfl~mm~hle and low cost are unavailable. Thus, current textile technology is somewhat limlted by the shortcomings of the conventional finish applicators. These have imposed limitations in the processing o~ fibers, restricted the available products and added to the cost of fiber production. In addition, some of ~he aqueous ~inishes ha~Je poor roll wetting properties and others RD-2820 35 suffer from poor emulsion stability.
~,:
SUMMARY OF THE INVENTION
This inventlon provides a new dimension for finish application to a threadline of yarn which alleviates the above shortcomings. The method and apparatus o~ the invention has the capability of applying low and high viscosity fluids of all types and compositions whether aqueous or nonaqueous, homo~
geneous or nonhomogeneous, emulsifiable or nonemulsi-fiable, wetting or nonwetting, etc~ The method involves supplying a liquid finish in a continuous metered stream to an atomizing surface on the tip of an ultrasonic vibrator then atomizing and propelling the liquid onto the yarn by means of the vibrator while the threadline is being passed in close proximity to lS the tip of ~he vibratox. Gear pumps are utilized to supply precisely metered streams of finish or ingredients per threadline to the vibrating finish applicators. Where two or more fluid streams are required per threadline the fluids are supplied in me~ered streams to a mixing zone immediately ahead of the point of application where they are blended prior to or during a~omizaticn or they may proceed directly to the tip of the applicator as separate streams. In a preferred embodiment of the apparatus the through passage in the tip of the ultrasonic vibrator is formed to converge the filaments of the threadline into a coherent bundle and an angled slot is pro~ided in the tip leading into the through passage to facilitate stringup.
In addition to atomizing and propelling the liquid finish onto the yarn, the vibrations also warm the finish slightly, homogenize separate finish ingredien~s, clean the orifice in the atomizing sur-face of the tip of the vibrator and mi nl mi ze yarn friction within the vibrating finish applicator.
~7~
BRTEF DESCRIPTIOM OF TE~E DRAWI~IGS
Fig. 1 is a schematic drawing showing use of the subject inish applicators at two loca~ions in a yarn manufacturing operation.
Fig. 2 is a schematic side elevation view of the vibrator used as a finish applicator at a first location.
Fig. 3 is an end view of the tip of a vibrator at the first location.
Fig. 4 is a section of ~ig. 3 taken along line 4-4.
Fig. 5 i5 a top view of Fig. 3.
Fig. 6 is a schematic side elevation view of the vibrator used as a finish applica~or at a second location in the yaxn bulking operation.
Fig. 7 is a section of Fig. 6 taken along line 7-7O
Figs. 8 through lla are side and fro~t elevation views of the end of the horn for various open tip designs used when a single rather than multiple yarn threadline is to be ~reated with liquid.
Figs. 1~, 13 and 14 are a top view and an end elevation view of a horn for use when treating a single yarn threadline with two separate streams of liquid.
DETAILED ~ESCRIPTION OF THE II,LUSTR~TED EMBODIMENTS
The process chosen for purposes of illustra-tion in Fig. 1 includes a yarn 12 being spun as two separate threadlines from a spinneret 14 and each threadline is forwarded through the passages in the tip of the horn 16 of a first vibrating finish appli-cator generally designated 18. Next the threadline passes around feed roll 20 and its associated separator roll 22 around draw pin assembles 2a, 26 to draw rolls 28 where it is forwarded ~y the rolls 7~
28 at a constant speed through yarn guides 30 and through the yarn passageways 32 of the jet bulking devices 34. In the jets 34 the threadlines 12 are subjected to the bulking action of a hot fluid directed through inlets 36 (only one shown). The hot fluid exhausts with the threadline against a ro~ating drum 38 having a perforated surface on which the yarn cools to set the crimp. From the drum the threadlines in bulky form pass to a guide 39 and in a path over a pair of guides 17 past the end of the second vibratox 18' ~hen to a pair of driven take-up roll~ 40. Bulky yarns of this type are disclosed in U.S. Patent No. 3,186,155 to Breen and Lauterbach. The threadlines are then directed through fixed guides 42 and traversing guides 44 onto rotating cores 46 to form packages 48.
In Fig. 2 the vibrating finish applicator 18 is supplied with liquid finish by means of a year pump 15 connected to a reservoir 13. The gear pump supplies a precisely metered stream of liquid finish via pipe 17 to an internal axial passage 19 in the horn 16. A
closed applicator tip inside of which the yarn 12 me~ts the finish is either mounted on the end of or foxms an integral part of the horn of the ultrasonic vibrator. This structur2 is shown in more detail in Figs. 3-5 wherein the horn 16 has a pair of through passages 56, 58 each formed of successive tapered and cylindrical lengths designated 56a, 56b and 58a, 58b respectively. The passage~ 19 are connected to through passages 56, 58 via orifices 60 and angled slots 62, 64 are provided in commllnication with through passages 5~, 58 xespectively to facilitate stringup o continuous threadlines into the passagas.
In operation the liquid to be atomized and applied to the threadline 12 is precisely metered by pump 15 from reservoir 13 into the passages 19 in the ~7~
horn 16. The liquid flows onto a portion of the inner surface of passages 56, 58 ~hrough ori~ices 60 as a thin film then vibration of the thin liquid film breaks up or atomizes the liquid in the passages 56, 58 and propels it onto the threadlines moving through the passages. The vibrations of the horn are also trans-mitted to the threadline to reduce yarn friction in the passages at the tip of the horn and to aid in uniformly spreading the finish on the filaments of the threadline.
The vibra~ion of the tip atomizes ~he liquid and propels th~ atomized mist into the yarn bundle by dlsturbing the gas boundary layer accompanying the moving threadline.
This makes the threadline more receptive to the liquid and aids in uniformly distributing the liquid on and around the individual filaments in the yarn threadline.
The ultrasonic generator may ~e piezoelec-tric or magnetostrictive having a frequency in the range of from 10 to 100 KHZ, but preferably in the range of 20 to 50 KHZ.
Fig. 6 shows the vibrator 18' locate~ at the second location in the operation. This vibrator differs from the one described in Figs. 2-5 in that horn 1~' has an open tip desisn with two open-sided bottle-shaped passages 56', 58' in commllni cation with liquid suppl~ orifices 60' (Fig. 7). In additionr a shield 50 shaped as a hollow he~lisphere with slots for the threadlines to pass through is positioned beycnd the tip of the horn to collect excess liquid that may not be deposited on the yarn.
Figs. 8, 8a, 9, 9a and 11, lla are side and front elevations of the tips of horns having open-sided passa~es for yarn with varlous combinations of tapered, spherical and cylindrical lengths. These horns are illustrated for use with single threadli~es however, multiple threadline passage construction can also be s achieved. More particularly, Figs. 8, 8a disclose an open-sided tip with a groove 7 having successive tapered, cylindrical, tapered and reduced cylindrical lengths designated 7a, 7b, 7c and 7d respectively.
Figs. 10 and lOa illustrate a tip with an enclosed passage 7' with a stringup slot 8 leading into the pas-sage. The passage has the same configuration as the groove shown in Figs. 8, 8a, i.e. successive tapered, cylindrical, tapered and reduced cylindrical lengths.
In Figs. 9 and 9a the tip has a groove wilh successive tapered and cylindrical lengths 5 and 5a while Figs.
11, lla illus~rate the groove with successive tapered, cylindrical, spherical and cylindrical lengths deslg-nated 3a, 3b, 3c and 3d respectively.
~lthough a single liquid stream per thread-line has been illustrated, two or more liquid streams per threadline are contemplated. These may be trans-ported to a mixing zone immediately ahead of the point of application hy multiple passages inside the vibrating horn 16 allowing separation of the liquid streams until a location just ahead of where orifices 60 enter the through passages 56, 58. Another con-figuration for handling more than one metered stream per threadlin~ is shown in Figs. 12, 13 and 14 wherein separate liquid supply passages 60a and 60b lead to the inner surface o yarn slot 52 in the end of the horn.
These passages may be angled in relation to each other as in Fig. 12 or may be parallel to each other as in Fig. 14.
An additional feature of the applicators in Figs. 12 and 14 is that the yarn bundle is spread out evenly across the tip surface to enhance the txeatment of the individual filaments.
Polyhexamethyle~e adipamide having a relative 7~
viscosity of about 63 is melt spun into a yarn contain-ing 68 filaments and processed using apparatus similar to thak shown in Fig. 1 except that a second vibrating applicator 18' is not used. The spun filaments are passed through the tip of a vibrating flnish applicator 18 operating at 20 KHz and are forwarded to a feed roll running at a surface speed of 680 yards (624 meters) per minute. The applicator tip has the configuratlon shown in Fig. 3. A yarn finish is metered to the appli-cator tip where it is atomized and propelled into theyarn bundle which is in contact with the vibrating tip.
The finish is a combination of an oily lubricating composition and water. C~mh; n~ tions containing 7.5%, 15%, 30%, 50~ and 90~ by weight of the lubricatin~ com~
position are used. ~he combinations are found to have the following Brookfield viscosities 7.5%, 3.5 centi~
poises; 10~, 3.8 centipoises; 15%, 4.2 centipoises;
30%, 8.3 centipoises; 50~, 144.8 centipoises; and 90%, 1,100 to 1,200 centipoises. The meter pump i5 opexated to apply calculated amounts of 0.25%~ O.5%, 0.75% and 1.00~ by weight, based on the weight of the yarn, of ~he lubricating composition for each of the combina-tions. The concomitant amounts o water thus applied to the fiber were also calculated and are listed in Table I. The treated yarn was ~hen drawn to a denier of 1350 by draw rolls running at a surface speed of ~154 yards per minute (1976 meters/minute), then bulked and wound up. When conditions permitted, each run was continued for 20 minutes before the package was doffed; runs less than 20 minutes are indicative of troublesome operation. Table II shows that the process operated surprisingly well even with the 50%
and 90~ solutions which would have been too viscous for application by current normal means. Measurement ~La7~
of the resulting yarns indicated the effects of thP applied water upon yarn bulk, dyeability and quality, thus effectively demonstratins the extreme versatili~y and utility of this new method of finish application.
EXA~IPLE 2 A 1300 denier yarn is prepared in a manner similar to that described for (1) above except that the tip has only one hole and water and an oily lubri-cating composition are metered separately and themetered streams combined just prior to entry to the applicator. The lubricating composition is metered at 1.85 grams per minute and the water is mekered at 5.58 grams per minute. The process runs well. When the lubricating combination is emulsified in water in a separate step for roll application, it has poor emulsion stability and does not wet the roll well.
A 1300 denier yarn is prepared in a manner similar to that described for (1) above except that a second vibrating applicator 18', operating a~ 50 KHz, is used betweer. the drum and the forwardi~g rolls. A
yarn finish conta~ n j~g 15~ of an oily lubricating composition is applied from the second vibrating appli-cator. The yarn finish is metered at a rate to provide0.65~ by weight, based on the weight of the yarn, of the lubricating composition to the yarn. The yarn that is removed from the drum is essentially dry so that a measure of the moisture level of the yarn after it has passed the applicator is a measure o~ the amount o~
finish applied. The moisture measurement is a con-ductivity measurement and shows a significant increase when the vlbrating applicator is in operation ovex when the vibrating applicator is not vibrating.
4~
TABLE I
wt. percent water on yarn amount of finish wt. ~ercent of lubricating applied to yarn composi~ion in the finish 5 wt. percent go 50 30 15 7.5 0.250.028 0.25 0.58 1.42 3.08 O.S00.056 0.50 1.17 2.83 6.17 0.750.083 0.75 1.75 4.25 9.25 1.000.111 1.00 2.33 5.67 12.33 TABLE II
Doff length minutes wt. percent of lubricating amount of finish composition ln the finish appl~ed to yarn wt. percent 9o 50 30 157.5 0.25 5 20 20 17 20 0.50 20 20 22oo 20 13 18 20 20 ~0 15 0.75 ~0 20 20 ~0 20 1.00 20 4 20 16 2
Claims (17)
1. A method for applying a liquid to a yarn threadline comprising: supplying liquid in a metered stream to an atomizing surface on the tip of an active horn of an ultrasonic vibrator; moving the threadline in a path in close proximity to said atomizing surface;
and atomizing and propelling the liquid onto the threadline by vibrating said surface.
and atomizing and propelling the liquid onto the threadline by vibrating said surface.
2. The method of claim 1, said liquid being supplied to said atomizing surface in separate metered streams.
3. The method of claim 1, said liquid being supplied to said atomizing surface in separate metered streams which are joined at a location just prior to reaching said atomizing surface.
4. The method of claim 1, said liquid being formed of separate metered streams of oil and water.
5. The method of claim 1, said liquid being formed of different oils.
6. The method of claim 4, said oil being water insoluble.
7. The method of claim 4, said oil being emulsifiable.
8. A method of applying a liquid to a threadline comprising: supplying the liquid in a con-tinuous metered stream to an atomizing surface on a through passage in the tip of an ultrasonic vibrator;
atomizing the liquid in said through passage by means of said vibrator; and vibrating the threadline by means of said vibrator while forwarding it through said through passage in close proximity to said atomizing surface.
atomizing the liquid in said through passage by means of said vibrator; and vibrating the threadline by means of said vibrator while forwarding it through said through passage in close proximity to said atomizing surface.
9. The method of claim 8, said liquid being supplied to said atomizing surface in separate metered streams.
10. The method of claim 8, said liquid being supplied to said atomizing surface in separate metered streams which are joined at a location just prior to reaching said atomizing surface.
11. The method as defined in claim 8, said liquid being formed of separate metered streams of water and oil.
12. The method of claim 11, said oil being water insoluble.
13. The method of claim 11, said oil being emulsifiable.
14. An ultrasonic vibrator for atomizing liquids that includes an active horn terminating in an atomizing surface wherein liquid is fed to said atomizing surface through a bore in said horn connect-ing said atomizing surface and a source of supply for said liquid, characterized in that, said atomizing surface being a portion of the inner surface of an elongated passage open at each end.
15. The vibrator as defined in claim 14, said passage being formed of successive tapered and cylindrical lengths, said bore opening into said tapered length.
16. The vibrator as defined in claim 14, said liquid being fed to said atomizing surface through two bores.
17. The vibrator as defined in claim 14, said elongated passage being enclosed and including a stringup slot in communication with said passage for introducing continuous lengths of yarn into the passage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP81306157A EP0082896B1 (en) | 1981-12-30 | 1981-12-30 | Method and apparatus for applying liquid to a moving threadline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1197148A true CA1197148A (en) | 1985-11-26 |
Family
ID=8188489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000393930A Expired CA1197148A (en) | 1981-12-30 | 1982-01-12 | Method and apparatus for applying liquid to a moving threadline |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0082896B1 (en) |
| JP (1) | JPS6030379B2 (en) |
| CA (1) | CA1197148A (en) |
| DE (1) | DE3174029D1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4891960A (en) * | 1988-01-26 | 1990-01-09 | E. I. Du Pont De Nemours And Company | Yarn finish applicator |
| US4926661A (en) * | 1989-03-15 | 1990-05-22 | E. I. Du Pont De Nemours And Company | Yarn finish applicator |
| RU2721063C2 (en) | 2015-10-30 | 2020-05-15 | Джонсон энд Джонсон Консьюмер Инк. | Single-dose aseptic aerosol mist projector |
| DK3368112T3 (en) * | 2015-10-30 | 2019-12-02 | Johnson & Johnson Consumer Inc | ASEPTIC AEROSOL SPRAYER |
| MX2018005334A (en) | 2015-10-30 | 2018-05-17 | Johnson & Johnson Consumer Inc | Aseptic aerosol misting device. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL232155A (en) * | ||||
| GB781174A (en) * | 1953-01-21 | 1957-08-14 | Benninger Ag Maschf | Improvements in or relating to apparatus for the treatment of fibrous material products to be passed through a treating medium |
| US2855244A (en) * | 1955-06-03 | 1958-10-07 | Bendix Aviat Corp | Sonic liquid-spraying and atomizing apparatus |
| US3783596A (en) * | 1971-05-26 | 1974-01-08 | Du Pont | Jet application of textile finish to moving threadlines |
| US3906757A (en) * | 1971-06-14 | 1975-09-23 | Unitika Ltd | Apparatus for continuous dyeing of yarns |
-
1981
- 1981-12-30 EP EP81306157A patent/EP0082896B1/en not_active Expired
- 1981-12-30 DE DE8181306157T patent/DE3174029D1/en not_active Expired
- 1981-12-30 JP JP21597181A patent/JPS6030379B2/en not_active Expired
-
1982
- 1982-01-12 CA CA000393930A patent/CA1197148A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0082896B1 (en) | 1986-03-05 |
| JPS58120853A (en) | 1983-07-18 |
| JPS6030379B2 (en) | 1985-07-16 |
| EP0082896A1 (en) | 1983-07-06 |
| DE3174029D1 (en) | 1986-04-10 |
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