US3803826A - Method for continuously setting wool silver - Google Patents

Method for continuously setting wool silver Download PDF

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Publication number
US3803826A
US3803826A US00272746A US27274672A US3803826A US 3803826 A US3803826 A US 3803826A US 00272746 A US00272746 A US 00272746A US 27274672 A US27274672 A US 27274672A US 3803826 A US3803826 A US 3803826A
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United States
Prior art keywords
sliver
wool
fibers
steaming
under
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Expired - Lifetime
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US00272746A
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English (en)
Inventor
A Sato
T Koide
H Ito
T Ishida
K Ishizawa
Y Nagata
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Kanebo Ltd
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Kanebo Ltd
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Priority claimed from JP5379171A external-priority patent/JPS5142208B1/ja
Priority claimed from JP1874972A external-priority patent/JPS5514183B2/ja
Application filed by Kanebo Ltd filed Critical Kanebo Ltd
Priority to US394932A priority Critical patent/US3871165A/en
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Publication of US3803826A publication Critical patent/US3803826A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G99/00—Subject matter not provided for in other groups of this subclass

Definitions

  • the present invention is concerned with a method an apparatus for continuously setting a' wool sliver, and more particularly, it relates to a method and an apparatus for provisionally straightening the crimps of the individual fibers constituting the sliver for-later recovery of these crimps in the final finishing step.
  • this crimpstrai'ghtening treatment be only provisional to insure that the fibers will continuously remain in a substantially crimpless state throughoutthe spinning process and that the fibers will regain their crimps for the first time when they are subjected later to a crimp recovering treatment either after the sliver is'spun into a yarn or after the yarn is woven or knitted into a fabric.
  • the crimps of wool fibers can be removed either by the steps of heating, for a certain while, a wool sliver in a tensioned state when the sliver is wet, or by first moistening the fibers with water, then heating the same thereafter drying them under tension.
  • Japanese Pat. Publication No. 42-4301 discloses the techniques of setting the fibers to a crimpless state by passing steam through a container in which a worsted wool top is contained.
  • the stress to which the wool fibers are subjected is very low, being only 30-60 g at most per gram/meter of the sliver.
  • this method has a further disadvantage that it cannot be performed in a continuous mode of operation. 7
  • d represents the mean fineness (denier) of the fibers constituting this sliver
  • L represents the distance between the nippers before the test was started; and 1 1 represents the mean length (cm) of the fibers constituting this sliver.
  • Table 1 is shown the crimp stretchability 9 fa wool "top obtained from the Hana 5W5; said Japanese Pat. Publication No. 42-4301 as compared with that of the wool top which has not been subjected at all to the setting treatment intended to remove the crimps from the fibers.
  • the worsted top which is obtained from the method disclosed in said Japanese Patent Publication is such that the crimps of the fibers are certainly straightened in the stage immediately after the setting treatment.
  • a top is hardly any different from the top which has not received this setting treatment when this top" is placed in a high humid atmosphere, and therefore, it is difficult to term such a top" as having stable loss of crimps continuously throughout the entire worsted spinning process.
  • this method taught by the .lapanese Pat. Publication fails to provide a really desirable setting effect.
  • the sliver is subjected to drafting while gathering the fibers of the sliver together more tightly by giving the sliver a false twist through a rotating flute.
  • Another example is that a wool sliver is passed between twp sets of nipping rollers which are arranged so that the distance between the respective sets is smaller than the mean length of the fibers contained in the sliver, and only the crimps of the fibers are straightened without causing sliding movement between the fibers, i.e., without causing the phenomenon of draft to take place.
  • the present invention has been worked out by adroitly combining these known techniques.
  • Another object of the present invention is to provide a method and an apparatus for heat setting of wool sliver under tension so that the thus removed crimps of the fibers of the sliver will never be recovered even when the sliver is placed under non-restrained condition throughout the entire spinning process but will be recovered only by subjecting the fibers to a crimp recovering treatment which is given after the fibers have been spun into a yarn or after the yarn has been processed into a fabric.
  • Still another object of the present invention is to provide a method and an apparatus of the type described above, which is a unique and novel combination of known techniques used in the conventional worsted spinning processes.
  • FIG. 1 is a chart showing the stress-elongation characteristic curves of wool fibers.
  • FIG. 2 is a chart showing the relationship between the heating time and the crimp stretchability which is the effect of the setting. 7
  • FIG. 3 is an illustration showing the changes in the state of a wool fiber which this fiber exhibits during the setting process.
  • FIG. 4 is an explanatory schematic illustration show ing an example of the apparatus used in putting the method of the present invention into practice.
  • FIG. 5 is a perspective view showing a false-twister of the apparatus shown in FIG. 4.
  • FIG. 6 is a sectional view of same.
  • FIG. 7 is a perspective view showing the behavior of the sliver when the latter is being nipped by a set of nipping rollers of the apparatus shown in FIG. 4.
  • One aspect of the present invention concerns a method for continuously setting wool sliver during the manufacture of a top" in a worsted spinning process. This method is characterized by the successive performance of the following three steps: (1) heating the wool sliver which is being given an appropriate amount of moisture; (2) giving the resulting sliver false twist and draft simultaneously for a certain length of time in a heated atmosphere; and (3) then drying this sliver under weak tension at a temperature lower than that in the preceding step.
  • the aforesaid step 1 is intended to give the wool sliver an appropriate amount of moisture and to heat the moistened sliver.
  • an appropriate amount of moisture is given the wool sliver and the moistened sliver is heated at the same time by keeping the sliver in a relatively relaxed state prior to being false twisted and drafted. More specifically, by either steaming the sliver or by heating the moistened sliver, the wool fibers in the sliver become sufficiently swollen and are thus plasticized to render the crimps as well as the fibers themselves to a state of being easily stretched in the subsequent draft step.
  • FIG. 1 shows cruves representing the relationship between the stress and the elongation of the fibers. In FIG.
  • A represents the state of wool fibers held at the temperature of 25C and the humidity of 15 percent.
  • B represents the state of those wool fibers which are held at the temperature of 100C and the relative humidity of 22 percent.
  • This chart shows that in order to obtain an equal elongation, the fibers B can be drafted under a tension of one half or less of that required for the wool fibers A.
  • it is extremely effective, in making uniform and smooth straightening of crimps, to give the wool fibers an amount of moisture of 20-20 percent and to heat them at a temperature of -1 10C prior to being subjected to the drafting step.
  • the wool sliver having been steamed is fed to the twisting zone formed by a false twister.
  • the fibers contained in the sliver are gathered together more tightly as the sliver is twisted progressively.
  • the sliver proceeds through a heated atmosphere of this zone under a tension, during which period the fibers are restrained so as not to slip and to be displaced from their initial positions in the sliver and accordingly not to receive uneven draft.
  • the inherent crimps of the wool fibers are straightened so that the fibers are rendered substantially rectilinear in shape. The wool fibers are thus heat-set in this rectilinear shape.
  • FIG. 2 The relationship between the length of time of heating and the effect of setting, with respect to the aforesaid crimp stretchability, is mentioned in FIG. 2.
  • the curve C represents the crimp stretchability relative to heating time exhibited by the wool fibers immediately after the fibers were set by the drying step.
  • D represents the same relation at the end of four (4) hours during which period the fibers set by the drying step were left in'a high temperature and humid atmosphere of C and RH of 80 percent under relaxed state.
  • E represents the same relationship at the end of one (1) minute during which time the sliver obtained from C is left in normal pressure and in saturated steam atmosphere under relaxed condition.
  • the wool fibers treated in these respective modes of treatment of C, D and B have been given false twist of 25 T/m and drafted by percent from the initial lengths of the wool fibers.
  • the heating time be set at least 0.5 minute.
  • the length of the twisting zone of the apparatus for carrying out said setting will require at least three (3) meters. If however, it is intended to prevent fibers from slipping relative to each other in the sliver when pulled between two sets of nipping rollers without giving any twist to these fibers, the
  • the aforesaid difficulty can be effectively eliminated.
  • the appropriate turns per meter of false twist to be given the sliver is set at .15- T/m.
  • the sliver will be caused to proceed to the rotary section of the false twister, then to the untwisting zone, and then to the nipping rollers and is delivered there from in the non-twisted state again.
  • This untwisting zone is arranged to, have a lengthsmaller than the average length of the wool fibers contained-in the sliver and this untwisting ,is performed under tension and heat to lift the preceding twist set which was given the fibers together with the crimp stretching set in the twisting zone to set the fibers in such a way that only the crimp straightening set remains in the fibers.
  • the sliver is dried at a temperature lower than that of the steam in the preceding zone and under a condition which will not cause the crimps of the fibers in the sliver which have been straightened to recur, i.e., under a stress of about 0.19/d or less.
  • FIG. 3 shows the state of wool fiber which' is exhibited under each condition of treatment.
  • F represents the state of the fiber when it-is given only moisture and heating.
  • G represents the state in which the fiber obtained in F has been drafted.
  • H represents the state in which the drafted fiber has been dried at the aforesaid temperature under a tension substantially the same as that of the draft.
  • 1 represents the wool fiber which has been dried at the said temperature under such a weak tension as will not cause recovery of the once lost crimps of the fiber.
  • the method of the present invention includes the step of performing a sufficient crimp removing set on the wool fibers of a sliver by drying it at a temperature lower than that of the preceding steaming section under the condition stated in I. If, on the contrary, this drying step is conducted under a high tension such as stated in H. there will arise such inconveniences and disadvantages as will be described below.
  • the present invention contemplates the carrying out of continuous setting of wool slivers by adroitly utilizing the behavior of wool slivers.
  • the feature of this invention lies in the effective combination of treatments in a series of steps of performing mainly provisional crimp-removing set on wool fibers.
  • the wool sliver having undergone the preceding step is then passed through a nipping point in the second step and arrives at the false twisting and heating zone where the sliver is intensively drafted while being twisted and while the fibers are thus restrained relative to each other in the sliver.
  • the appropriate moistening and heating which were given the sliver in the preceding first steaming step will take effect so that the fibers are rendered to the state in which their crimps are ready for being easily straightened to a sufficient extent, and then these crimps are thus effectively straightened;
  • the twist set on the wool sliver oer se which has been given in the preceding twisting and heating treatment can be removed completely in such a way that only the twist set of the sliver excluding the crimpremoving set is lifted;
  • the intensive shrinking property peculiar to wool fibers is controlled so that the sliver is dried and substantially quenched by this lower temperature under a weak tension to thereby suppress only the tendency of recovering the lost crimps.
  • no stretching of the wool fibers is performed but only the crimp removing set can be effected.
  • reference numeral 1 represents a wool sliver.
  • 2 and 2' represent feed rollers for feeding the wool sliver l to a steaming chamber at an appropriate speed.
  • 30, 3b and 3c, 3d represent a pair of sliver inlet members and a pair of sliver inlet members and a pair of sliver outlet members, respectively, of the steaming chamber 5.
  • Each of these inlet and outlet members is constructed to cooperatively form a sort of nozzle so that the gap between the upper and the lower inlet members thereof decreases progressively in the direction of travel of the wool sliver 1.
  • This steaming chamber 5 is continuously supplied with saturated steam of normal pressure and filled with this steam.
  • This heating chamber 5 is assigned for keeping the wool sliver 1 which has been heated in the steaming chamber 5 at substantially the same temperature as that of the latter chamber 5.
  • this heating chamber 5' is provided a steam pipe P so that a heat zone is formed by the use of this steam pipe P to serve as the heat source.
  • a first nipping roller unit 4 and a false twisting section 6 which are arranged in the direction of the travel of the wool sliver 1.
  • a second nipping roller unit 7 In between this heating chamber 5' and its next adjacent drying member 9, there is provided a second nipping roller unit 7, so that this second nipping roller unit 7 serves to couple the heating chamber 5' to the drying chamber 9.
  • Said first nipping roller unit 4 is comprised of two bottom rollers 4a and 40 arranged at an appropriate interval relative to each other and a top roller 4b positioned above these two bottom rollers at a position intermediately of these two.
  • the top roller 4b is pressed downwardly by an appropriate pressure source not shown such as air cylinder to form a set of nipping elements for the wool sliver.
  • Each of these three rollers 4a, 4b and 4c is rotated positively at the same peripheral speed.
  • the false twisting section 6 comprises a hollow cylinder 61 which is rotated positively, and a ring 62 which is mounted circumferentially of this cylinder 61 on a notch 610 formed on this circumference.
  • the wool sliver l which is fed through the hollow cylinder 61 is led out from this notch 61a to the outer side of the ring 62 and then the sliver l is again guided into the hollow cylinder 61 to impart false twist to the sliver 1.
  • numeral 63 represents a bearing of a supporting member for rotating the hollow cylinder 61 about the axis represented by the direction of travel of the sliver 1.
  • 64 represents a chain sprocket for imparting positive rotation to the hollow cylinder 61. This rotation force is transmitted from an appropriate drive source not shown.
  • the second nipping roller unit 7 is comprised of two bottom rollers 7a and 7c which are arranged at an appropriate interval therebetween and a top roller 7b overriding these two bottom rollers at an intermediate position between the two as in the case of the first nipping roller unit 4.
  • the top roller 7b is pressed downwardly by an appropriate pressure means not shown such as air cylinder, to form a pair of nipping elements for the sliver.
  • an appropriate pressure means not shown such as air cylinder
  • the interval between these two sets of nipping roller means serves as the draft zone. Also, the distance of travel of the sliver between the contact point P at which the wool sliver 1 contacts the ring 62 and the first nipping point P of the second nipping roller unit 7, and the distance of travel of the sliver between said first nipping point P and the second nipping point P of the second nipping roller unit 7 are both arranged to be smaller than the average length of the wool fibers consituting the sliver, namely, smaller than about 60-70 mm, in order to be sure that there will not occur any slipping between the fibers in the sliver in the stage the twisted sliver l is untwisted.
  • the drying chamber 9 positioned posteriorly adjacent to the second nipping roller unit 7 comprises a plurality of drying rollers 8a, 8b, 8c, 8d and 8e each containing a heater therein which are arranged in zig-zag fashion as shown so that the wool sliver l1 delivered from the second nipping roller unit 7 will travel from one roller to another by following a zig-zag course.
  • These drying rollers are rotated at a peripheral speed which increases progressively in the direction of travel of the wool sliver 1. Accordingly, as the sliver '1 passes around these respective rollers one after another, the sliver is pulled at a progressively increasing but appropriate draft ratio, so that the sliver is adapted to be dried under a relatively weak tension.
  • this drying chamber 9 is constructed in such a way that dry air having a temperature not higher than and desirably lower than the temperature of the steam provided in the preceding chamber 5' is introduced into this chamber 9 from a dry air inlet 10 which is provided at one upper end portion of the chamber 9 and is discharged to the outside of this chamber from an air outlet 11 which is provided at the opposite lower end of the chamber 9.
  • numerals l3 and 13 represent a pair of upper and lower delivery rollers for guiding the already set wool sliver discharged from the drying chamber 9 to the subsequent step or to an appropriate take up means such as a can.
  • a wool sliver I which is to be set is introduced into the steaming chamber via the feed rollers 2 and 2'.
  • the steam pressure which is 0.05-0.1 kg/cm by gauge pressure
  • the steam is allowed to be discharged under pressure from the space between the inlet and outlet members 3a and 3b so that the air contained in the sliver l is driven out from this space with this outflowing stream of steam. Because of the arrangcment of these members 3a and 3b to form a progressively narrowing space 'therebetween as these members extend deeper into the steaming chamber 5, the aforesaid air driving-out effect is increased all the more.
  • the temperature of the woolsliver 1 is raised up to the temperature (about 100C) within the steaming chamber.
  • the moisture is caused to be absorbed by the wool fibers in the sliver as the steam is condensed progressively; According to our calculation, the moisture content of the sliver will be as follows. Let us now suppose that the wool fibers before being introduced into the apparatus had a moisture content of percent.
  • the wool sliver l which has passed by the ring 62 is completely untwisted.
  • the wool sliver l is fed at a constant speed and so long as the hollow cylinder 61 in the false twisting section 6 is rotated at a constant speed, the number of turns which are applied to the sliver between the first nipping roller unit 4 and the ring 62 will be maintained constant.
  • the wool sliver l which is drafted between the first nipping roller unit 4 and the ring 62 is in the state of having been twisted at a constant pitch. Therefore, there will arise no slipping between the fibers in the sliver when the sliver is pulled during the drafting. In this way, it is possible to perform continuous drafting of the sliver which is formed with a number of staple fibers without causing any uneven draft and breakage of the sliver itself.
  • a desired draft ratio may be obtained by increasing, to an appropriate extent, the peripheral speed of the second nipping roller unit 7 in excess of that of the first nipping roller unit 4.
  • a desirable draft ratio will be 10-40 percent.
  • the condition of the wool fibers has progressed from its yield region to its after-yield region. Therefore, the fibers in the sliver are rendered to a state in which they can be elongated sufficiently. Thus, the fibers are elongated uniformly.
  • the wool sliver l Up to the stage after the sliver 1 has passed by the ring 62 in the false twisting section 6 till it reaches the nipping point P the wool sliver l is in the state of being untwisted. Also, at the second nipping roller unit 7, the sliver l is in the state of having been untwisted.
  • the wool sliver l which enters the drying chamber 9 is subjected to setting as it is dried under a weak tension by the drying rollers 8a, 8b, 8c, 8d and 8e which each contains a heater therein.
  • the wool sliver 1 which has thus been set is discharged progressively by the delivery rollers 13 and 113' under non-restrained state and without causing the once lost crimps to be recovered.
  • the wool sliver is given, during the entire worsted spinning process, an appropriate amount of moisture and heat, and then the sliver is drafted in a warm atmosphere by false twisting treatment without causing any slipping between the fibers in the sliver, thereafter untwisting the sliver under tension, and finally the sliver is dried under a weak tension and at a temperature lower than the temperature of the preceding treatments, thereby setting the fibers contained therein.
  • the sliver as well as the individual fibers therein receive a very high amount of provisional setting which remains stable and unchangeable when the sliver is exposed to a high humid atmosphere, and this is especially so throughout the worsted spinning process.
  • This method therefore, eliminates the need of taking up the sliver around a bobbin under a tensioned state to thereby pull the crimps of the fibers and to thus restrain the fibers, as has been the case with the prior art. Accordingly, by relying on the method of the present invention, it becomes quite possible to take the sliver into a can. Besides, the present method allows the omission of the step of subjecting a bobbin of top to ageing.
  • the wool sliver was passed through saturated steam during its travel from the first nipping roller unit 4 to the second nipping roller unit 7. It should be understood that if the sliver is passed through an atmosphere which is capable of keeping the sliver in substantially the same condition as that in the preceding step where the sliver has been impregnated with an appropriate amount of moisture and held at an increased temperature by steaming, then there can be obtained a substantially equal effect of setting. Also, the number of turns which the sliver receives at the time of drafting should be selected so as to keep the sliver in a stable condition by taking into consideration the speed of travel at the time of drafting, and the rotation speed of the false twister members.
  • the wool tops which have experienced ageing according to the prior art show a substantial amount of crimp recovery in a high humid atmosphere under non-restrained condition and do not necessarily show a stable setting effect during the spinning process.
  • those tops set according to the method of the present invention exhibit satisfactory loss of crimps after the setting, and present a stable effect of setting such that the once lost crimps hardly become recovered when the sliver is subjected later to a high humid atmosphere under nonrestrained state.
  • Furthennore by steaming the thus set sliver under non-restrained state, crimps were recovered to such an extent as was substantially the same with those tops which experienced ageing.
  • the set according to the invention hardly recovered the initial state even in nonrestrained state throughout the entire spinning process. It will be noted that this set is one which is able to recover the initial state only in the final treatment after the fibers have been spun into a yarn or after the spun yarn has been processed into a fabirc. been processed into a fabric.
  • test pieces having the aforesaid properties were spun, respectively, on spinning frames.
  • the draft ratio, the number of yarn breakages during the spinning process and the shrinkage at boiling water of spun yarns are shown in Table 4.
  • the spindles of the spinning frames were rotated invariably at the rate of 10,500 r.p.m. and the count of fineness of the spun yarns was invariably 50 (by metric count).
  • a method for continuously setting wool sliver during the manufacture of a top" in a worsted spinning process comprising the teps of:
  • step 1) is performed bysteaming the sliver under the conditions that the content of moisture of the sliver is held at 20-30 percent and that the temperature is held at 70-1 10C.
  • step 2) is performed for at least 0.5 minute.
  • step 2) is performed for at least 0.5 minute.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00272746A 1971-07-19 1972-07-18 Method for continuously setting wool silver Expired - Lifetime US3803826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US394932A US3871165A (en) 1971-07-19 1973-09-06 Apparatus for continuously setting wool sliver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5379171A JPS5142208B1 (cs) 1971-07-19 1971-07-19
JP1874972A JPS5514183B2 (cs) 1972-02-22 1972-02-22

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US3803826A true US3803826A (en) 1974-04-16

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US00272746A Expired - Lifetime US3803826A (en) 1971-07-19 1972-07-18 Method for continuously setting wool silver

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US (1) US3803826A (cs)
BE (1) BE786470A (cs)
FR (1) FR2146396B1 (cs)
GB (1) GB1358499A (cs)
IT (1) IT963176B (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112668A (en) * 1976-10-04 1978-09-12 Monsanto Company, St. Louis, Missouri Method for treating polyester filaments
US5477669A (en) * 1989-08-17 1995-12-26 Commonwealth Scientific & Industrial Research Organisation Process for stretching staple fibers and staple fibers produced thereby
EP1240368A4 (en) * 1999-10-28 2002-10-25 Wool Res Org New Zealand Inc IMPROVED METHOD AND DEVICE FOR DRAWING FRAGMENTS OF ANIMAL FIBERS

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891376A (en) * 1955-09-22 1959-06-23 Universal Winding Co Method of processing yarn
US3204396A (en) * 1961-08-21 1965-09-07 Us Rubber Co Method for texturing thermoplastic yarn and apparatus
US3247569A (en) * 1962-12-13 1966-04-26 Burlington Industries Inc Woven fabric and method of making same
US3339250A (en) * 1962-05-29 1967-09-05 American Cyanamid Co Crimping fibers
US3447310A (en) * 1966-07-07 1969-06-03 Tno Method for the production of yarn and a yarn obtained by applying the said method
US3505802A (en) * 1966-03-05 1970-04-14 Gijutsu Kenkiyu Kumiai Amaike High bulky and crimpy fibrous material
US3650103A (en) * 1969-11-10 1972-03-21 Uniroyal Inc Process and apparatus for texturizing yarn
US3686845A (en) * 1966-09-16 1972-08-29 Gijutsu Kenkyu Kumiai Amaike K Apparatus for producing a non-irregular twist yarn
US3742692A (en) * 1971-06-01 1973-07-03 Leesona Corp Apparatus and method for false twisting yarn

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891376A (en) * 1955-09-22 1959-06-23 Universal Winding Co Method of processing yarn
US3204396A (en) * 1961-08-21 1965-09-07 Us Rubber Co Method for texturing thermoplastic yarn and apparatus
US3339250A (en) * 1962-05-29 1967-09-05 American Cyanamid Co Crimping fibers
US3247569A (en) * 1962-12-13 1966-04-26 Burlington Industries Inc Woven fabric and method of making same
US3505802A (en) * 1966-03-05 1970-04-14 Gijutsu Kenkiyu Kumiai Amaike High bulky and crimpy fibrous material
US3447310A (en) * 1966-07-07 1969-06-03 Tno Method for the production of yarn and a yarn obtained by applying the said method
US3686845A (en) * 1966-09-16 1972-08-29 Gijutsu Kenkyu Kumiai Amaike K Apparatus for producing a non-irregular twist yarn
US3650103A (en) * 1969-11-10 1972-03-21 Uniroyal Inc Process and apparatus for texturizing yarn
US3742692A (en) * 1971-06-01 1973-07-03 Leesona Corp Apparatus and method for false twisting yarn

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112668A (en) * 1976-10-04 1978-09-12 Monsanto Company, St. Louis, Missouri Method for treating polyester filaments
US5477669A (en) * 1989-08-17 1995-12-26 Commonwealth Scientific & Industrial Research Organisation Process for stretching staple fibers and staple fibers produced thereby
EP1240368A4 (en) * 1999-10-28 2002-10-25 Wool Res Org New Zealand Inc IMPROVED METHOD AND DEVICE FOR DRAWING FRAGMENTS OF ANIMAL FIBERS

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GB1358499A (en) 1974-07-03
DE2235343B2 (de) 1975-09-25
DE2235343A1 (de) 1973-02-01
FR2146396B1 (cs) 1977-04-01
IT963176B (it) 1974-01-10
FR2146396A1 (cs) 1973-03-02
BE786470A (fr) 1972-11-16

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