US3656214A - Crimping apparatus for manufacturing a bulky yarn - Google Patents

Crimping apparatus for manufacturing a bulky yarn Download PDF

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Publication number
US3656214A
US3656214A US4827A US3656214DA US3656214A US 3656214 A US3656214 A US 3656214A US 4827 A US4827 A US 4827A US 3656214D A US3656214D A US 3656214DA US 3656214 A US3656214 A US 3656214A
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Prior art keywords
yarn
crimping
fibers
nozzle
ejection
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Expired - Lifetime
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US4827A
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English (en)
Inventor
Goro Ozaw
Kenzo Kosaka
Kiyoshi Adachi
Tsutomu Okaya
Takeo Ariki
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Mitsubishi Chemical Corp
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Mitsubishi Rayon Co Ltd
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam

Definitions

  • Fiber cooling means may advantageously be [58] Field of Search ..28/1.4, 72.12, 75 added for enhanced stability of the crrimps imparted to the fibers. [56] References Cited UNITED STATES PATENTS 8 Claims, 6 Drawing Figures 2,067,251 l/ 193 7 Taylor .2 8/ 72 ,12 X
  • the present invention relates to an improved crimping apparatus for manufacturing a bulky yarn, and more particularly relates to an improved apparatus for imparting crimps to thermoplastic filamentary fibers by ejecting, together with a heating medium, the heated filamentary fibers onto a rotationaltype crimping member.
  • a novel crimping apparatus of a jet-ejection type has already been proposed regarding the manufacturing of desirable quality bulky yarns.
  • a yarn composed of thermoplastic filamentary fibers is ejected against a crimping member together with a heating medium flow for mutual fiber entanglement and heat setting.
  • crimping member is designed in the form of a rotational cylinder peripherally provided with a brush, needle or porcupine-type surface.
  • a continuous yarn is introduced into an ejection nozzle together with a suitable heating medium such as heated air or steam, heated through contact with the heated medium while passing through the ejection nozzle and ejected against a barrier, which is located facing an outlet of the ejection nozzle in a spaced relationship, for crimp impartation.
  • a suitable heating medium such as heated air or steam
  • the e 'ection nozzle is composed of a yarn guide tube and a yarn e ection tube consolidated with the yarn guide tube in a mutually superposed relationship.
  • a yarn ejection tube outlet is located downstream of a yarn guide tube outlet in an adequately spaced relationship and the processed yarn is heated within the space between the two outlets by the heating medium introduced therein. 80, provided that the heating medium temperature and type are once settled, the heating medium thermal effect on the processed fibers is apparently dependent upon the distance between the two outlets.
  • the effective fiber heating time becomes considerably short when the yarn is processed at a high speed, that is, the thermal effect on the processed fibers is lowered. Therefore, it becomes necessary to desirably and effectively impart crimps to such yarns of less heat reactive fibers such as a polypropylene yarn of relatively large fineness.
  • the processed yarn tends to vibrate while advancing through the lengthened space and such yarn vibration forms a bar in the high speed crimping operation.
  • Still another disadvantage of the conventional crimping apparatus exists in the unstable removal of the fibers from the rotational cylinder type crimping member. After being ejected onto the crimping members peripheral surface, the processed fibers are allowed to stay within the spaces formed on the surface due to the presence of needles or like members. The length of this stay time varies as the shrinkability of the processed fibers varies, that is, the location of fiber removal from the surface also tends to vary. Perhaps this variation in the fibers removal point can be compensated for by adjusting the crimped fibers take-up speed, accordingly. However, this kind of speed adjustment is quite difficult to carry out in the actual production process.
  • a principal object of the present invention is to provide an improved crimping apparatus capable of assuring a considerable production increase.-r""
  • Another object of the present invention is to provide an improved crimping apparatus capable of eliminating operational drawbacks encountered in the prior arts.
  • Still another object of the present invention is to provide an improved crimping apparatus producible of bulky yarns having crimps of desirable properties.
  • a further object of the present invention is to provide an improved crimping apparatus capable of imparting stable crimps to the processed fibers.
  • a further object of the present invention is to provide an improved crimping apparatus of simple mechanical design.
  • the apparatus of the present invention is provided with a pair of feed rollers, an ejection nozzle located downstream of the feed rollers, a rotational crimping member disposed relative to the ejection nozzle and provided with numerous superficial spaces formed by needles or protuberances and a particularly designed yarn take-up means for removing the yarn from the crimping members surface.
  • the ejection nozzle is provided with a supplementary heating medium path encircling a main heating tube for sufficient heating of the processed fibers.
  • the rotational crimping members peripheral surface is receptive of the fibers ejected from the ejection nozzle outlet.
  • the yarn take-up means is generally in the form of a pair of cooperating substantially conical rollers.
  • a contact line of the rollers is directed perpendicularly to the crimping member's rotational axis and the rollers large-diametral ends are directed toward the crimping members rotational direction.
  • the yarn take-up speed can be automatically adjusted in response to the variation in the processed fibers shrinkability.
  • the apparatus of the present invention may advantageously be provided with fiber-cooling means and is located in the vicinity of the fibers removal point from the rotational crimping member.
  • a considerably high speed crimping operation can be assured.
  • a polypropylene yarn of 1850 denier thickness can be processed at a speedup to 250 m/min and a nylon yarn of 1,260 denier thickness, which has an excellent conformity to heat setting, can be processed at a speed up to 350 m/min.
  • a polyester yarn it can be processed at a speed slower than the case of nylon yarn but faster than polypropylene.
  • FIG. 1 is an explanatory side view of an embodiment of a crimping apparatus according to the present invention
  • FIG. 2 is a lengthwise cross-sectional view of an embodiment of the ejection nozzle used in the crimping apparatus of the present invention
  • FIG. 3 is a side view partly in section a of the ejection nozzle shown in FIG. 2 for illustrating a switching operation.
  • FIG. 4 is a cross-sectional view of conduits for supplying the heating medium to individual ejection nozzles
  • FIG. 5 is an explanatory side view of yarn take-up means used in the apparatus of the present invention.
  • FIG. 6 is a perspective view of an embodiment of the crimping apparatus of the present invention equipped with fibercooling means.
  • a pair of feed rollers 2a and 2b are located downstream of a given supply source (not shown) of a multifilament yarn 1.
  • a cylindrical-type rotational crimping member 5 which rotates in a direction shown by an arrow in the drawing.
  • a peripheral surface of the crimping member 5 is is provided with numerous spaces 5b formed by numerous needle-like protuberances 5a planted thereon.
  • a fiber ejection nozzle 3 is disposed with its ejection outlet closely directing the peripheral surface of the crimping member 5.
  • the ejection nozzle 3 is supplied with a compressed heating medium flow 4 from a given supply source (not shown). Located in the vicinity of the fibers planed removal point, is a pair of cooperative substantially conical delivery rollers 6a and 6b, whose mechanical design will be hereinafter explained in detail.
  • the multifilament yarn 1 from the given supply source, is fed into the ejection nozzle 3 at a constant speed by the pair of feed rollers 2a and 2b. Passing through the ejection nozzle 3, the multifilament yarn 1 is accompanied with the heating medium 4, under pressure, for example steam, also introduced thereinto and ejected through the ejection outlet of the ejection nozzle 3 and together with the heating medium, onto the peripheral surface of the crimping member 5. Due to the ejection under pressure, fibers in the multifilament yarn l are pushed into the spaces 5b on the surface and crimped therein and carried toward the removal point as the crimping member 5 rotates. Arriving at the removal point, the fibers in the multifilament yarn 1 are removed or take off from the surface by the conical delivery rollers 60 and 6b and taken-up by a suitable winder (not shown).
  • a suitable winder not shown.
  • the apparatus of the present invention is firstly characterized in the mechanical design of the fiber ejection nozzle 3.
  • the fundamental requirements for the functional feature of the fiber ejection nozzle 3 are (a) suf' ficient thermal effect on the processed fibers even at a high speed, (b) less damage to the fibers and (c) fewer troubles in the operation and handling thereof.
  • none of the conventional ejection nozzles can fulfill the above-described requirement without discrepancy.
  • the ejection nozzle 3 comprises a yarn guide tube8 having a central longitudinal bore receptive of the yarn l to be processed and an ejection tube 7 adjustably threaded into the yarn guide tube 8 at its upstream end.
  • the yarn guide path 8a of the yarn guide tube 8 elongates into a central longitudinal bore of the ejection tube 7.
  • a centrally bored main heating tube 9 extends in an annularly spaced relationship to the ejection tube 7. This annular space forms a supplementary space 11 for a heating medium path.
  • a downstream end of the main heating tube 9 is connected to the downstream end of the ejection tube 7 and forms an ejection outlet of the fiber ejection nozzle 3.
  • An upstream end of the main heating tube 9 meets the elongated yarn guide path 8a of the yarn guide tube 8 in an annularly spaced relationship.
  • the central bore of the main heating tube 9 is connected with the supplementary heating medium in the annular space 11 by a connecting space 12 and a connecting path 13.
  • the supplementary heating medium space 11 is connected to a given source (not shown) of the heating medium 4 by a supply conduit 10.
  • the positional relationship between the ejection tube 7 and the yarn guide tube 8 can be changed as desired by adjusting the thread 14 connection.
  • the multifilament yarn 1 to be processed is introduced into the yarn guide tube 8 as shown by an arrow.
  • the yarn l is effected by a suction force presented by a heating medium 4, under pressure introduced into the fiber ejection nozzle 3 through the supply conduit 10.
  • the yarn l is accompanied with the compressed heating medium 4 also introduced thereinto through the paths l2 and 13 and is heated.
  • the processed yarn l is additionally and indirectly heated by the heating medium 4 introduced into the supplementary heating medium space 11.
  • the effective length of the heating zone can be elongated and the presence of the centrally bored main heating tube 9 assures effective prevention of the fibers disturbance during processing through the ejection tube 3.
  • the direct contact of the compressed heating medium 4 with the processed yarn -1 within the main heating tube 9 brings about a moderate and desirable entangling action on the fibers composing the yarn 1 and, due to this fiber entangling effect, the fibers in the yarn are brought into an increased bundled condition.
  • the fibers in the multifilament yarn l are deposited onto the peripheral surface of the crimping member 5 and are, due to the ejection force, pushed into the numerous spaces 5b formed on the surface for a physical deformation in a heated condition, that is, for crimping.
  • the shape of the crimps acquired on the fibers in the abovedescribed technique is quite distinctive in that the individual fibers are favourably entangled with each other and that the formed crimps are randomly distributed over the fibers composing the yam.
  • This is fundamentally different from the crimp shapes obtained by the application of the conventional crimping techniques such as the false-twisting system of conventional stuffing box system. Namely, individual fibers are provided with smooth three-dimensional curves.
  • the resultant multifilament yarn can be provided with an enriched bulkiness and a soft hand feeling.
  • the desired product can be obtained by using a lesser yarn quantity when compared with yarns manufactured by another method.
  • the feed rollers 2a and 2b may be constructed in the form of ordinary rollers or in the form of conical rollers as shown in FIG. 6, the latter assuring effective yarn supply speed control.
  • the nip point selection of the yarn l by the pair of conical rollers 20 and 2b can be carried out as desired by using an adequate yarn guide (not shown) and, when the nip point is selected on the larger diametral portion of the rollers 2a and 2b, the yarn 1 will be supplied to the ejection nozzle 3 at a higher supply speed.
  • the supply speed of the yarn l to the ejection nozzle 3 can be changed as desired by displacing the yarn guide along the contact line of the pair of feed rollers 2a and 2b, accordingly.
  • FIG. 3 an embodiment of the mechanism for enabling this heating medium supply switching is shown.
  • the supply conduit of the ejection nozzle 3 is switchably connected to a main supply conduit through an aperture 16 of the latter.
  • the heating medium 4 is passable through the connection by the aperture 16 and is introduced into the ejection nozzle 3.
  • the respective yarn supply switching can be easily performed by only pivoting the corresponding ejection nozzle assembly around the main supply conduit in a manner independent from each other.
  • the ejection nozzle or nozzles 3 can be either laterally stationary with respect to the rotational axis of the crimping member 5 or movable in that direction.
  • the crimping member 5 may be slidable in its axial direction, also. Consequently, by designing both as mutually movable in the above-described sense, the following possibilities can result.
  • the mechanical attack on the surface by the ejection can be distributed over a long distance and local damage of the needle-like members or honeycombed protuberances planted on the surface can be effectively obviated. Consequently, the needle-like members or honey-combed protuberances are durable for long periods of use.
  • the effective stay of the yarn on the surface can be elongated resulting in high speed impartation of stable crimps on the fibers.
  • the above-described lateral movement of the ejection nozzle or nozzles can be carried out by utilizing a suitable cam driving mechanism positioned sideways of the crimping member 5. In this case, no trouble will occur in the removal action of the yarn or yarns from the surface if the lateral sliding width is in a range from 10 to 15 mm.
  • FIG. 4 an embodiment of the arrangement for performing the distribution of the heating medium to a plurality of aligned ejection nozzles is shown.
  • a plurality of ejection nozzles 30, 3b, 3c, .3n are connected respectively to the main supply conduit 15 in an adequately spaced and aligned disposition.
  • the main supply conduit 15 is internally provided with one or more auxiliary heaters extending therein through for obtaining a uniform temperature distribution over all ejection nozzles 30, 3b, 3c,
  • the temperature can be easily changed as desired by adjusting the magnitude of the electric voltage used, only.
  • the heating medium can be distributed uniformly to each ejection nozzle and the possible temperature lowering of the medium during the distribution can be effectively compensated for by the presence of the auxiliary heater or heaters disposed in the main supply conduit. Uniformity in both temperature and distribution can be assured.
  • the angular relationship of the ejecting direction with I respect to the peripheral surface of the crimping member also plays an important role in determining the crimping effect on the apparatus of the present invention.
  • the ejecting direction of the ejection nozzle 3 is perpendicular to a virtual tangent plane contacting the circle formed by the peripheral surface of the crimping member 5 at the ejection point.
  • the distance between the outlet of the ejection noule 3 and the peripheral surface of the crimping member 5 should advantageously be selected as short as possible. By thusly selecting the intervening distance, the difference between the fibers ejection pressure and the fibers push-in pressure can be almost minimized and a sufficient crimp impartation will be ascertained.
  • This distance should favourably be 10 mm or shorter and when the heated medium is ejected from such a close position to the surface of the crimping member, the ejected medium tends to reflect from the surface and escalate the temperature of the atmosphere surrounding the crimping member 5 for enhanced thermal effect on the fibers composing the yarn 1.
  • FIG. 5 a mechanism for adjusting the crimped yarns removal speed from the crimping member's peripheral surface is shown.
  • the pair of cooperating conical delivery rollers 60 and 6b are positioned.
  • a contact line of the rollers 6a and 6b is directed almost perpendicularly to a radial line extending from the rotational axis of the crimping member 5 and the large-diametral ends of the rollers 6a and 6b are directed toward the rotational direction member 5.
  • the fibers inthe supplied multifilament yarn 1 After the fibers inthe supplied multifilament yarn 1 is provided with crimps during their stay in the spaces 5b on the crimping members surface, they must be removed therefrom.
  • the removal speed of the crimped yarn 21 is determined in accordance with a nominal fiber thermal :shrinkability composing the yarn 1.
  • the actual fiber thermal shrinkability is smaller than the nominal value, the actual removal point of the yarn 21 deviates towards a downstream location B. Due to these positional deviations, the nip point of the yarn 21, by the of the crimping rollers 6a and 6b, moves towards the large-diametral ends of the rollers 6a and 6b, the yarn 21 is now taken up at an increased take-up speed and the actual removal point gradually returns to its initial location A.
  • the actual thermal shrinkability is larger than the nominal value
  • the actual removal point of the yarn 21 deviates towards an upstream location C
  • the nip point of the yarn 21, by the rollers 60 and 6b moves towards the small-diametral ends of the rollers 6a and 6b
  • the yarn 21 is now taken up at a decreased take-up speed and the actual removal point gradually also returns to its initial location A.
  • the crimped yarn 21 can be removed from the surface of the crimping member at an optimum removal point whereon the resistance against removal is smallest in accordance with the lengthwise variation in the thermal shrinkability of a single yarn or variation in the thermal shrinkabilities of a plurality of yarns.
  • the percent degree of the surface taper of the rollers 6a and 6b is so selected as to be slightly larger than the percent variation or deviation of the yarns thermal shrinkability.
  • the percent increase in the rollers diameter at its largest-diametral end should favourably by about 10% with respect to the rollers diameter at its middle length portion and the percent decrease in the rollers diameter at its smallestdiametral end should favorably be about l0% in the same sense.
  • One of the pairs of rollers 6a and 6b is constructed in the form of a driven roller and the other in the form of a pressure roller, the latter being preferably urged towards the former utilizing a suitable urging mechanism such as a spring.
  • the taking up means of the above-described type it is possible to process two or more yarns simultaneously to the crimping member and to bundle them together at the time of yarn take-up without enlarging the occupying space by the taking-up means.
  • the taking-up means of the present invention is provided with a relatively simple mechanical design and is accompanied with ease in the handling operation. Further, even in case two or more yarns are to be nipped by the delivery rollers 6a and 6b, the removal point automatically displaces sideways, as above-explained, for an effective prevention of the locational damage to the rollers surface and the fibers contained in the yarns can be somewhat opened due to a rubbing effect by a sliding contact of the yarns with the rollers surface during the lateral displacement.
  • fibers composing the multifilament yarn l and ejected from the ejection nozzle 3 are pushed into the spaces 5b formed on the crimping members surface by the numerous protuberances 5a and are deformed into crimped configuration during their stay in the spaces 5b.
  • a superior crimping effect results from a superior thermal effect.
  • sufficient cooling of the crimped fibers can hardly be attained during their period of stay within the space 5b, that is, during the period from ejection to removal.
  • lnsufiicient cooling of the crimped yarn often tends to lead to a variable crimping effect and disappearance of the imparted crimps.
  • increase in the crimping members diameter may somewhat obviate this drawback, it tends to result in enlargement of the whole arrangement of the apparatus, trouble in driving the apparatus of such an enlarged arrangement and less adaptability for an effective mass-production.
  • FIG. 6 A mechanism for achieving the above-described effective cooling of the crimped yarn is illustrated in FIG. 6, wherein the mechanism comprises yarn cooling means 17 disposed facing the crimping member 5 in the vicinity of the yarn removal point.
  • the yarn cooling means 17 comprises a pair of slidably superposed perforated plates 18a and 18b and the cooling air flow rate passable therethrough can be changed as desired by adjusting the superposed relationship between the two plates 18a and 18b.
  • the yarn cooling means 17 can also be in the form of a perforated plate slidably superposed with a shutter plate and the cooling air flow rate passable therethrough can be changed as desired by adjusting the surface area of the perforations through sliding of the shutter plate.
  • the crimping apparatus of the present invention With cooling means of the above-described type, it becomes possible to shorten the time the crimped yarn stays within the spaces 5b on the crimping members surface while insuring a sufficient cooling effect on the yarn within a short period. This results in desirable compactness of the apparatuss construction, that is, the diameter of the crimping member can be minimized without lowering the stability of the imparted crimps.
  • the intervening distance between the opening of the cooling means and the peripheral surface of the crimping member should preferably be 20 mm or shorter.
  • the crimping member of the present invention is also recommendable to provide with a plain peripheral surface.
  • the yarn portion contacting the surface portion having needle-like protuberances will be provided with crimps and the yarn portion contacting the plain surface portion will not be provided with crimps.
  • the resultant yarn can be provided with a novel configuration, wherein the crimped portions and the non-crimped portions alternatively extend lengthwise.
  • the crimping member of the present invention can be made not only in the form of a cylinder but also in the form of an endless belt. Further, the protuberances are not limited only to needle-like members or honey-combed protuberances. Various types of protuberances can be used to define spaces in conformity to the requirement of the end products.
  • the yarn processed through the crimping apparatus of the present invention can possess excellent entanglement of the component fibers and a random disposition of the component fibers in the yarn configuration.
  • the shape of the crimps thus obtained is essentially different from those obtained by the conventional technique and the individual filamentary fiber is provided with three-dimensional smooth curves in its shape.
  • the crimped yarns manufactured on the crimping apparatus of the present invention are provided with enriched bulkiness and soft and comfortable hand feeling. They are further advantageous in that, when the yarns are used for textile products such as carpets, a lesser quantity of yarn is necessary than in the case where the crimped yarns are manufactured on the conventional-type crimping apparatuses.
  • the heating tube can be supplementally heated and the yarn passing through the main heating tube can be indirectly heated resulting in a remarkably enhanced thermal efficiency.
  • the processed yarn can be subjected to direct contact with the heating medium for a long distance, that is, the main heating tube is elongated and, accordingly, the fibers in the yarn can be sufficiently heated at a desired temperature.
  • the ejection force of the yarn can be adjusted as desired. Further, when a plurality of ejection nozzles are used in an aligned arrangement, the crimp impartibility of the number of ejection nozzles can be equalized.
  • the apparatus of the present invention can produce crimped yarns of various types.
  • the yarn can be taken off from the peripheral surface of the crimping member at a position of the minimum removal resistance regardless of the variation in the thermal shrinkability of the componentary fibers of the yarn.
  • local damage of the protuberances can be effectively prevented resulting in considerable longevity of the apparatus.
  • EXAMPLE 1 A polypropylene multifilament yarn of 1,850 denier thickness containing 120 filaments was supplied to a crimping apparatus of the present invention, a conventional ejection nozzle of a short heating distance type and an ejection nozzle of the present invention shown in FIG. 2 being simultaneously used in an aligned arrangement on a same crimping apparatus. The crimping operation was carried out under the following processing conditions.
  • Nylon 6 multifilament yarn of 1,260 denier thickness containing 60 filaments was processed through the apparatus, the same as that used in the foregoing example, and using two types of nozzles.
  • the processing conditions were as follows.
  • a yarn crimping apparatus for manufacturing a bulky yarn comprising, rotationally driven crimping means including a surface having protuberances thereon defining a multiplicity of fiber-receptive spaces for crimping yarn fibers delivered into said spaces, an ejection nozzle spaced from said surface for ejecting plastified yarn fibers therefrom and delivering the yarn fibers in a plastified state into said spaces as said crimping means is driven for crimping said yarn, means for taking-off the crimped yarn from said crimping means after setting the crimped yarn and for taking it off at speeds automatically adjusted according to variations in the thermal shrinkability of the yarn fibers, and means to supply the yarn to said nozzle at a substantially constant supply speed.
  • a yarn crimping apparatus including coacting means to set the yarn disposed intermediate said nozzle and said means for taking-off the crimped yarn.
  • a yarn crimping apparatus in which said means for taking off said yarn comprises two rotationally driven conical rollers coacting to take-off said yarn.
  • a yarn crimping apparatus according to claim I, in which said protuberances extend outwardly from said surface substantially perpendicularly thereto.
  • a yarn crimping apparatus in which the distance between an outlet of said nozzle and said surface is no greater than 10 mm.
  • a yarn crimping apparatus in which the distance between an outlet of said nozzle and said surface is less than 10 mm.
  • a yarn crimping apparatus in which said protuberances are substantially perpendicular to said surface, and in which said means for taking-off said crimped yam comprises means disposed to take 011' the yarn from said crimping means substantially perpendicularly to said surface.
  • a yarn crimping apparatus in which said means for taking-off said crimped yarn comprises coacting driven conical rollers having their greatest diameter disposed in a direction toward which said crimping means rotates.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US4827A 1969-08-26 1970-01-22 Crimping apparatus for manufacturing a bulky yarn Expired - Lifetime US3656214A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44067084A JPS499430B1 (enrdf_load_stackoverflow) 1969-08-26 1969-08-26

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US3656214A true US3656214A (en) 1972-04-18

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US4827A Expired - Lifetime US3656214A (en) 1969-08-26 1970-01-22 Crimping apparatus for manufacturing a bulky yarn

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US (1) US3656214A (enrdf_load_stackoverflow)
JP (1) JPS499430B1 (enrdf_load_stackoverflow)
CH (1) CH512601A (enrdf_load_stackoverflow)
CS (1) CS186705B2 (enrdf_load_stackoverflow)
DE (3) DE2065061A1 (enrdf_load_stackoverflow)
FR (1) FR2043408A5 (enrdf_load_stackoverflow)
GB (1) GB1270606A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773453A (en) * 1971-03-23 1973-11-20 Teijin Ltd Apparatus for the manufacture of crimped bulky filaments
US3798718A (en) * 1970-05-26 1974-03-26 Bancroft & Sons Co J Apparatus for stuffer-crimping yarn
US4290177A (en) * 1979-10-24 1981-09-22 Enterprise Machine And Development Corp. Air jet with a baffle including an arcuate yarn engaging surface
US4416041A (en) * 1978-04-21 1983-11-22 Rieter Deutschland Gmbh Apparatus for threading a thread into a texturizing nozzle
US4424614A (en) 1978-04-21 1984-01-10 Basf Farben & Fasern Ag Apparatus for threading up a rapidly travelling thread in a texturizing nozzle
US4519115A (en) * 1978-04-21 1985-05-28 Rieter Machine Works, Ltd. Method of threading a thread into a texturing nozzle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2067251A (en) * 1933-04-21 1937-01-12 Celanese Corp Manufacture of textile materials
US3143784A (en) * 1962-07-05 1964-08-11 Du Pont Process of drawing for bulky yarn
US3217386A (en) * 1965-11-16 Yarn transfer drum
US3251181A (en) * 1964-07-09 1966-05-17 Du Pont Coherent bulky yarn and process for its production
US3255508A (en) * 1959-06-02 1966-06-14 Du Pont Apparatus for crimping textile yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217386A (en) * 1965-11-16 Yarn transfer drum
US2067251A (en) * 1933-04-21 1937-01-12 Celanese Corp Manufacture of textile materials
US3255508A (en) * 1959-06-02 1966-06-14 Du Pont Apparatus for crimping textile yarn
US3143784A (en) * 1962-07-05 1964-08-11 Du Pont Process of drawing for bulky yarn
US3251181A (en) * 1964-07-09 1966-05-17 Du Pont Coherent bulky yarn and process for its production

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798718A (en) * 1970-05-26 1974-03-26 Bancroft & Sons Co J Apparatus for stuffer-crimping yarn
US3773453A (en) * 1971-03-23 1973-11-20 Teijin Ltd Apparatus for the manufacture of crimped bulky filaments
US4416041A (en) * 1978-04-21 1983-11-22 Rieter Deutschland Gmbh Apparatus for threading a thread into a texturizing nozzle
US4424614A (en) 1978-04-21 1984-01-10 Basf Farben & Fasern Ag Apparatus for threading up a rapidly travelling thread in a texturizing nozzle
US4519115A (en) * 1978-04-21 1985-05-28 Rieter Machine Works, Ltd. Method of threading a thread into a texturing nozzle
US4290177A (en) * 1979-10-24 1981-09-22 Enterprise Machine And Development Corp. Air jet with a baffle including an arcuate yarn engaging surface

Also Published As

Publication number Publication date
FR2043408A5 (enrdf_load_stackoverflow) 1971-02-12
CH512601A (de) 1971-09-15
GB1270606A (en) 1972-04-12
DE2065062A1 (de) 1972-02-10
DE2020764A1 (de) 1971-05-13
DE2065062C3 (de) 1978-11-02
JPS499430B1 (enrdf_load_stackoverflow) 1974-03-04
DE2065061A1 (de) 1972-02-10
CS186705B2 (en) 1978-12-29
DE2065062B2 (de) 1978-03-02

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