US3488941A - Process for splitting a narrow film or false twisting a fibrous material - Google Patents

Process for splitting a narrow film or false twisting a fibrous material Download PDF

Info

Publication number
US3488941A
US3488941A US687294A US3488941DA US3488941A US 3488941 A US3488941 A US 3488941A US 687294 A US687294 A US 687294A US 3488941D A US3488941D A US 3488941DA US 3488941 A US3488941 A US 3488941A
Authority
US
United States
Prior art keywords
film
rotating
fibrous material
yarn
bodies
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 - Lifetime
Application number
US687294A
Other languages
English (en)
Inventor
Nobuji Asaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2379867A external-priority patent/JPS5224148B1/ja
Application filed by Teijin Ltd filed Critical Teijin Ltd
Application granted granted Critical
Publication of US3488941A publication Critical patent/US3488941A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • D02G1/08—Rollers or other friction causing elements
    • D02G1/087—Rollers or other friction causing elements between the flanks of rotating discs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/47—Processes of splitting film, webs or sheets

Definitions

  • the present invention relates to a process for false twisting a continuous thin, narrow film of a thermoplastic linear high polymer or a continuous fibrous material of said polymer. More particularly, the present invention relates to a process for false twisting said film or said fibrous material by passing the same between frictionally overlapped surfaces of two rotating surfaces of the same diameter rotating in mutually different directions while frictionally contacting face by face.
  • An object of the present invention is to provide a novel, eflicient process for preparing various modified yarns such as split fibers or bulky yarns using a continuous narrow film or continuous fibrous material.
  • said objects and advantages are achieved by passing a continuous thin, narrow film or continuous fibrous material consisting of a thermoplastic linear high polymer between frictionally overlapped surfaces of two rotating surfaces of the same diameter rotating in mutually different directions along the rotating direction of said overlapped surfaces substantially on the bisecting line of said overlapped surfaces.
  • continuous thin, narrow film includes a long material of any shape as long as it is continuous and thin, such as a ribbon, band, foil or tube, While the term continuous fibrous material includes all the continuous fibrous material, such as continuous spun yarn, continuous multifilament yarn, continuous filaments and tows.
  • FIG.-1- is a perspective view showing one embodiment of contact of two rotating bodies which can be used in the present invention.
  • FIG. 2 is a sectional view taken along dotted line II' in FIG. 1.
  • FIG. 3 is a side elevation of another embodiment of rotating bodies used in the present invention.
  • FIG. 4 is a sectional view taken along dotted line IIII' in FIG. 3.
  • FIG. 5 is a schematic view illustrating an action received by a long material to be treated between overlapped surfaces of two rotating bodies of the same diameter.
  • FIGS. 6 and 7 are schematic views showing the relationship between frictionally contacted surfaces and axial distance of two annular rotating friction bodies.
  • FIG. 8 is a diagrammatic view showing one embodiment of an apparatus employed when the process of the present invention is utilized for preparation of a split yarn.
  • FIG. 9 is a diagrammatic view similar to FIG. 8 showing one embodiment of an apparatus employed when the process of the present invention is utilized for preparation of a bulky yarn.
  • the tip of a rotating shaft 1 forms a circular flange 2 on which a circular disc 7 is screwed by bolts 4; into said circular disc 7, a circular friction body 3 having an annular rim for-med by, for instance, proper synthetic rubber is inserted, which body 3 is tightly adhered to said circular disc 7 with an adhesive and the entirety constitutes a rotating body 5.
  • Another rotating body 5' is constituted by members of shape and quality same as those of said rotating body 5, the corresponding members of the rotating body 5' being shown by the same numbers of the members of the rotating body 5 added with dashes. Accordingly, the rotating bodies 5 and 5' are of the same diameter.
  • the rotating bodies 5 and 5' are so constituted that peripheries of the outer surfaces of the respective circular friction bodies 3, 3' rotate in opposite directions while contacting face by face at a proper width.
  • Numeral 6 shows a cross section of a continuous narrow film or continuous fibrous material to be treated.
  • FIGS. 3 and 4 show the structures of a rotating body of structure different from that of the rotating body of FIGS. 1 and 2, but also usable in the practice of the present inventlon.
  • Rotating bodies 15, 15' of FIGS. 3 and 4 are rotating bodies of the entirely identical diameters.
  • annular friction bodies 13, 13 are tightly adhered with a proper adhesive and the rotating bodies 15, 15' are so constituted that they may rotate in mutually opposite directions while the annular outer peripheral surfaces of said annular friction bodies 13, 13' contact with overlap as shown in FIG. 4.
  • a continuous narrow film or continuous fibrous material is inserted between surfaces contacted face by face of the respective rotating bodies 5, 5 shown in FIGS. 1 and 2 or 15, 15' shown in FIGS. 3 and 4, and while said continuous narrow film or continuous fibrous material is located so as to pass on the substantially bisecting line of contacted frictional overlapped surfaces of said rotating bodies as shown by line AB in FIG. 4 along the rotating direction of said overlapped surfaces, the rotating bodies 5, 5' or 15, 15' are rotated in mutually opposite directions. Then said continuous narrow film or continuous fibrous material receives rotating frictional' action of the respective friction surface of said two rotating bodies throughout the entire distance between'the points A and B. Action received by said film or fibrous material at this time will be explained in detail hereinbelow with reference to FIG. 5.
  • the proceeding path of the film or fibrous material is, [S mentioned above, line AB, and, feeding speed and wisting speed of the film or fibrous material on the opional point D
  • line AB equal to a component of elocity DF in a direction parallel to the proceeding diection of the film or fibrous material and a component )f velocity DG in a direction perpendicular to said pro- :eeding direction of the rotating velocity DE at the point of the rotating body, respectively.
  • twisting speed DG of the film or fibrous mate- 'ial at the optional point is given by the following formula.
  • the twistng speed of the film or fibrous material becomes maximum at the point A, gradually decreasing therefrom, lecoming minimum at the point C, namely zero.
  • vherein 6 stands for an apparent diameter when the film r fibrous material is twisted.
  • T is obtained by dividing number of twist er unit time at the optional position of the film or fibrous iaterial by feeding speed at that point, namely, it is iven by the following equation.
  • twist T represented by the equation disseminated.
  • direction of twist is y direction.
  • number of twists f the film or fibrous material gradually decreases, be-
  • Direction of twist between A and C is also Z direction.
  • a long material to be treated is held between said overlapped surfaces during the period it passes therebetween, and said material is positively forwarded in its proceeding direction, and at the same time, with the center of said overlapped surfaces as a border, said material undergoes twist and rubbing action from left and right directions thereby being false twisted.
  • various modified yarns such as bulky yarn or split yarn from a continuous narrow film or continuous fibrous material.
  • a long material to be treated for instance, a plurality of filaments of a continuous narrow film or continuous multifilament is adapted to pass through a heater or a heater and a cooler before it is held in overlapped surfaces of two rotating bodies, said material to be treated becomes a bulky product. Because left and right contrary twists are imparted thereto with the center of the bisecting line of said overlapped surfaces as a border, according to the present invention it is possible to obtain a bulky yarn having very little remaining torque.
  • a continuous narrow film is drawn at a high draw ratio in a direction of its length and highly oriented in advance, and preferably further crystallized, because such film is easily split in a direction of its length by twisting and rubbing actions when the process of the present invention is applied to such a narrow film, it is possible to prepare a split fiber or split fiber yarn. Also, at this time, as in the case of preparing a bulky yarn, when a continuous narrow film is adapted to pass through a proper heater or a heater and a cooler before it is inserted between the two rotating surfaces, a bulked split fiber or split fiber yarn is prepared.
  • rotating bodies rotating bodies'lS, 15' wherein on the surfaces of rims of bowl-shaped metal members 12, 12' having annular rims, and annular friction bodies are tightly mounted as shown in FIGS. 3 and 4, are recommended. At this time, however, axial distance of the rotating bodies 15, 15 having annular friction bodies 13, 13 must be properly provided.
  • FIGS. 6 and 7 the mode of FIG. 4 is further made schematic, where outer peripheries and inner peripheries of overlapped surfaces of two rotating annular friction bodies 13, 13 are shown by curves p, p and q, q, respectively, whereby related positions of different axial distances of the rotating bodies 15, 15 having annular friction bodies are shown.
  • width of the narrowest part of overlapped surfaces of the two annular friction bodies LM as shown in the following formula, not smaller than width ofsaid long material to be treated inserted and held by said overlapped surfaces (which is expressed by d) and not larger than 2 times thereof, preferably, 1.5 times thereof.
  • d S LM2d especially dLM 515d Because the path of the long material to be treated somewhat fluctuates transversely, it is preferable to make LM not smaller than a, however, when LM becomes too large, a wearing part becomes large, this being undesirable. The value of said d can be experimentally decided.
  • non-wear parts where the long material to be treated does not contact the overlapped surfaces namely, surfaces enclosed by the circle y and the inner periphery q, and the circle and the inner periphery q, respectively are worn and removed by contact with the long material to be treated.
  • the respective overlapped surfaces of the annular friction bodies 13, 13' respectively being equally worn, life of the rotating bodies is extended and it becomes possible to impart uniform treatment to the material to be treated 6 for a long period.
  • 21 is a film shaped from a high polymer, for
  • polypropylene slit to a width fit to denier of a yarn desired, drawn to a proper magnification of 4-10X in a direction of length to sufficiently orient the film and wound up on a bobbin.
  • a drawn slit film 23 passes a tension compensator 24 via a snell wire 22 thereby being imparted with a necessary tension.
  • the slit film 23 passes a yarn guide 25, entering a pair of circular rotating bodies 26 via a snell wire 22.
  • the circular rotating bodies 26 are mutually pressed by a spring 27, imparting twist to the slit film while pulling downward the slit film, at the same time, imparting a rubbing action to the slit film between the overlapped surfaces of the rotating bodies.
  • 28 is a winding device and a ring twisting machine or friction-type winder is used.
  • the drawn slit film is made to pass between the overlapped surfaces of said two rotating bodies on substantially the bisecting line of said overlapped surfaces.
  • Said pressing is controlled to a desired amount by said spring 27.
  • the split film being sufficiently tensioned and being heat set in twisted state within said heater, the slit film is sutficiently split, and somewhat bulky split fiber, not twisted but remaining u slight twisting inclination given at the time of heat :etting, is obtained. Due to rotating frictional action of he rotating bodies as mentioned above, because the split am is imparted with twists in different directions of Z 1nd S at AC and CB with the point C as a border, an :ffect similar to intertwisted yarn is brought about. As l result bundability of the obtained split fiber is enianced, and a characteristic split fiber capable of being voven without being imparted twist is obtained.
  • characteristic split ibers with bulkiness or a characteristic split fiber like ntertwisted y-arn unseen in a split fiber obtained by a :onventional process may be prepared.
  • a continuous thin, narow film consisting of a thermoplastic linear high polyner, sufficiently drawn and highly oriented is suitable.
  • )raw ratio depends upon the kind of polymer; however, irdinarily 412 is adopted. However, selection of a lraw ratio suitable for the process of the present invenion will be easy for those skilled in the art. Also so as o facilitate splitting a fiber, crystallization to some extent s desirable.
  • polyamide 1nd polyester is particularly suitable for the process of he present invention.
  • homopolymers such as polyropylene, polyethylene, polyvinyl chloride, polyvinyldene chloride and polystyrene or a blend of polyester 1nd polyamide and a blend of polyvinyl chloride and iolystyrene may be cited.
  • a synthetic rubber or natural rubber elastomer s suitable especially urethane rubber having a large abraion resistance is most suitable.
  • the hardness 5 60-100, preferably 80-90.
  • At least one otating body a rotating body mixed with powder of a ubstance having a high hardness, such as powder of an lbl'aSlVC and powder of silicone carbonate.
  • the narrow film may be split to mutually ompletely separated fine fibers, or the narrow film may split to a continuous film having numerous fine splits, is a result the narrow film becomes a bundle of numerous ine fibers.
  • the former is named a plit fiber, while the latter is named a split fiber yarn, )Oth of which are useful for the object of the present in- 'ention.
  • a continuous fibrous material 33 forwarded rom an original yarn pirn 31 is imparted with a preletermined tension at a tension compensator 34 via a nell wire 32, passing a heater 36 via a yarn guide 35, ntering the rotating frictionbodies of the present invenion 37, where tension and forwarding are imparted t aid fibrous material; 38 is a spring pressing a pair of ircular rotating bodies to each other thereby imparting l. necessary pressure to said fibrous material.
  • the fibrous naterial coming out from the rotating friction bodies is vound up on a winding machine 39.
  • a coolng device may be provided between the heater 36 and the otating bodies 37.
  • a yarn once heat set in Z direction is untwisted to zero, and is further strongly twisted in the opposite direction and then untwisted.
  • this final twisting in the opposite direction because the fibrous material is not heated, it is not possible to completely eliminate torque; however, it is possible to obtain a bulky yarn having torque far less than that of a yarn obtained by an ordinary spindle rotary-type false twisting machine.
  • What is considered a preferable condition for practicing the process of the present invention is that when the fibrous material enters the rotating bodies, the fibrous material is always tensioned to some extent.
  • the fibrous material since it is inserted between the annular friction bodies until it comes out therefrom, should be inserted and held between the annular friction bodies without fail.
  • the fibrous material is twisted prior to A, twisted shrinkage is brought about in the fibrous material.
  • the fibrous material is to be relaxed by that proportion, and unless the fibrous material is inserted and held at that place, the fibrous material will be forced out in a relaxed direction, it becoming impossible to stably practice false twisting operations and in that case a bulky yarn having weak torque cannot be obtained.
  • the process of the present invention can obtain a processing speed which is very high as compared with an ordinary false twisting process.
  • a continuous fibrous material used upon preparing a false twisted yarn according to the process of the present invention consists of a thermoplastic linear high polymer and a polymer, for instance, polyester, polyamide, polyacrylonitrile, polypropylene and polyvinyl alcohol is used.
  • an elastomer such as a synthetic rubber or natural rubber is suitable.
  • a rubber having a high hardness is suitable for splitting film; on the contrary, upon preparing a false twisted yarn, from an object of imparting twist to the fibrous material, a soft rubber having a high coefficient of friction, and accordingly a low hardness, is suitable.
  • NBR is most suitable, especially NBR having a hardness of 40-80, preferably 5060 is most suitable. At this time, it is an effective mode of practice to supply an oiling agent to the rotating bodies for the purpose of reducing abrasion due to the low hardness of the rubber.
  • contact pressure to a film or fibrous material for the preparation of either a split film or false twisted yarn, the range of said contact pressure being 0.3-3.0 g./denier-cm., preferably 1. 02.0 g./denier-cm. Selection of a contact pressure most suitable for the operation is easy for those skilled in the art.
  • EXAMPLE 1 In this example an explanation will be made about a case of preparing a split fiber in accordance with the process of the present invention.
  • a low pressure (high density) polyethylene film was extrusion shaped, drawn to about 8 times the original length in a direction of length only in heated air and the drawn film was cut to a 0.015 mm. thick and 8 mm. wide slit film.
  • this slit film was made a split fiber.
  • Discs were a pair of flat disc-shape ones of urethane rubber having a hardness of 85 and outer diameters of 50 mm.
  • the slit film was processed at a pressure mutually pressing said discs of 4 kg., tension at the film incoming side of 150 g., the distance between both centers of said discs of 28 mm. and at a film processing speed of 200 m./ min.
  • the obtained split fiber corresponded to about 1,000 deniers, each of the monofilaments constituting meshes being 30-40 deniers.
  • EXAMPLE 2 A stereospecific polypropylene film was extrusion shaped to obtain a 0.04 mm. thick broad film, which was continuously cut by a slitter to prepare a 34 mm. Wide slit film, which was continuously contacted with heated rollers thereby drawn about 9 times the original length in a direction of length to obtain an about 0.015 mm. thick and about 10 mm. wide film.
  • the discs had a pair of annular friction bodies of urethane rubber having a hardness of 90, having outer diameters of 50 mm. and inner diameters of 30 mm., the axial distance of the two discs was 30.8 mm.
  • the slit film was processed at a pressure mutually pressing said discs of kg., tension at the film incoming side of 200 mg;' and at a film processing speed of 250 m./min.
  • the annular friction body portions of the two discs were uniformly worn away.
  • the worn amount per kg. of the treated amount was 0.005-0.01 mm.
  • the obtained split fiber corresponded to about 1,200 deniers, each of the monofilaments constituting meshes of about 25-35 deniers.
  • the obtained split fiber had a tenacity of 3.5 g./de. an an elongation of 18% EXAMPLE 3
  • the slit film described in Example 2 was used as a material.
  • Discs were a pair of annular friction discs of urethane rubber having a hardness of 90, having outer diameters of 54 mm. and inner diameters of 25 mm. and the axial distance of the two discs was 32 mm.
  • the slit film was processed at a pressure mutually press ing said discs of 4 kg., tension at the film incoming side of 300 g. and at a film processing speed of 260 m./min.
  • the obtained split fiber was about 1,200 deniers, each of the morlofilaments constituting meshes of about 25-35 deniers.
  • the split fiber was processed at a pressure mutually pressing said discs of 4 kg., tension at the split fiber incoming side of 200 g. and at a processing speed of 300 m./min.
  • a heater for fixing twist was provided before the discs, the type of said heater being of contact type, said heater being of a bow shape, 1,500 mm. long and the heating part thereof was divided into two stages.
  • the film was processed at a pressure mutually pressing said discs of 4 kg., tension at the film incoming side of 200 g. and tension at the film winding side of 50 g.
  • the distance between both centers of the two discs was 31 mm. and the film processing speed was 150 m./min.
  • Temperature of the heater was 220 C. at a first stage and C. at a second stage, and temperature of the film at a speed of,, m./min. was substantially l20130 C.
  • Number of false twists at the heater was 400 T/M under the aforementioned conditions.
  • the obtained split fiber was bulky, having an alternately twisted shape, each of the monofilaments constituting meshes of 30 40 deniers.
  • EXAMPLE 5 In this example an explanation will be made about a case of preparing a woolly yarn in accordance with the process of the present invention.
  • a yarn used was a nylon semi-dull 1,050 denier/68 filament multifilament.
  • the discs were a pair of fiat disc-shape of urethane rubber having a hardness of 70, having outer diameters of 54 mm.
  • the multifilament was processed at a pressure mutually pressing said discs of 4 kg., tension at the multifilament incoming side of 50 g., the center distance of the two discs of 26 mm. at a multifilament processing speed of 80 m./min.
  • Example 4 As a heater, the one employed in Example 4 was used, temperature of a firststage thereof being made 230 C. and temperature of a second stage was made 180 C.
  • Number of false twists of the multifilament at the time of passing the heater was 750-800 T/ M and by providing a cooling device after the multifilament passed the heater, a bulky crimped yarn was obtained.
  • Said bulky crimped yarn had less torque as compared with a woolly yarn obtained by the conventional spindletype false twisting process, the same being used for interior products such as carpet or upholstery.
  • EXAMPLE 6 In this example an explanation will be made about a case of preparing a woolly yarn of a fine denier in accordance with the process of the present invention.
  • a yarn used was a nylon semi-dull 70 denier/24 filaments multifilament.
  • Discs used were a pair of annular bodies of nitrile rubber having a hardness of 50, having outer diameters of 54 mm. and inner diameters of 25 mm.
  • the multifilament was processed at a pressure mutually pressing said discs of 5 kg., tension at the multifilament incoming side of 10 g. distance between both centers of the two discs of 25.12 mm. at a multifilament processing speed of 180 m./min.
  • Example 5 The heater used in Example 5 was used.
  • size of the multifilament in twisted state was about 0.1 mm. in diameter.
  • Number of false twists at the time of passing the heater was 2,900 T/M-3,000 T/ M and by compulsorily cooling the multifilament after being heated, a bulky crimped yarn was obtained.
  • EXAMPLE 7 This example also relates to a case of preparing a fine denier woolly yarn in accordance with the process of the present invention; however, the yarn used was a polyester semi-dull 75 denier/36 filaments multifilament.
  • Discs were of nitrile rubber having a hardness of 50, having a pair of annular bodies having outer diameters of 62 mm. and inner diameters of 25 mm.
  • the multifilament was processed at a pressure mutually pressing said discs of 5.5 kg, tension at the multifilament incoming side of 110 g., tension at the multifilament outgoing side in front of a winding machine of 6 g., the distance between both centers of the two discs of 27 mm. and at a multifilament processing speed of 200 m./min.
  • the heater employed in Example was used. Temperature of the heater was made 260 C. at a first stage and 210 C. at a second stage.
  • Number of false twists of the multifilament at the time of passing the heater was 3,2003,300 T/M and onto the disc surfaces cooling water mixed with a few percent of an oiling agent was applied continuously.
  • a process for false twisting a continuous thin, narrow film or continuous fibrous material consisting of a thermoplastic linear high polymer, characterized by passing said film or continuous fibrous material between frictionally overlapped surfaces of two rotating surfaces of the same diameter rotating in mutually different directions while frictionally contacting face by face along the rotating direction at said overlapped surfaces substantially on a line bisecting said overlapped surfaces.
  • a process for false twisting a continuous thin, narrow film or continuous fibrous material consisting of a thermoplastic linear high polymer which comprises passing said film or continuous fibrous material between overlapped surfaces of two annular friction bodies having the same lengths of inner and outer diameters rotating in mutually different directions while contacting face by face along the rotating direction of said friction bodies substantially on a line bisecting said overlapped surfaces, characterized in that distance between centers of the rotating shafts of said two annular rotating bodies (2b) is made not smaller than the sum of the inner radii thereof (2r).
  • distance LM is not smaller than the width (d) of the narrow film or continuous fibrous material and not larger than two times thereof (2d), preferably 1.5 times thereof (15d).
  • a process for preparing a split fiber from a continuous thin, narrow film of a thermo-plastic linear high polymer, crystallized and drawn in the direction of length only which comprises passing said film between frictionally overlapped surfaces of two rotating surfaces of the same diameter, rotating in mutually different directions, while frictionally contacting said film face-toface at said overlapped surfaces substantially on a line bisecting said overlapped surfaces.
  • split fiber is produced as a bulky split fiber by a process which comprises an additional step of passing said film through a heating zone before said film is inserted and held between said overlapped surfaces.
  • a bulky yarn is produced by passing a continuous multifilament yarn through a heating zone prior to inserting and holding said yarn between said overlapped surfaces and passing said yarn therethrough.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US687294A 1966-12-05 1967-12-01 Process for splitting a narrow film or false twisting a fibrous material Expired - Lifetime US3488941A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP7974166 1966-12-05
JP781267 1967-02-07
JP781167 1967-02-07
JP2379767 1967-04-14
JP2379867A JPS5224148B1 (de) 1967-04-14 1967-04-14
JP2797767 1967-05-02

Publications (1)

Publication Number Publication Date
US3488941A true US3488941A (en) 1970-01-13

Family

ID=27548082

Family Applications (1)

Application Number Title Priority Date Filing Date
US687294A Expired - Lifetime US3488941A (en) 1966-12-05 1967-12-01 Process for splitting a narrow film or false twisting a fibrous material

Country Status (7)

Country Link
US (1) US3488941A (de)
BE (1) BE707571A (de)
CH (1) CH1704167A4 (de)
DE (1) DE1660664A1 (de)
DK (1) DK120768B (de)
FR (1) FR1551264A (de)
GB (1) GB1210408A (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702055A (en) * 1968-08-14 1972-11-07 Mitsubishi Rayon Co Method for manufacturing false twisted threads from thermoplastic resin tapes
US3772873A (en) * 1970-12-24 1973-11-20 Teijin Ltd Process for false-twisting a yarn
US3857233A (en) * 1973-02-19 1974-12-31 Hoechst Ag Voluminous filament yarn and process to prepare same
US3857232A (en) * 1973-02-19 1974-12-31 Hoechst Ag Filament yarn and process to prepare same
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus
US4339915A (en) * 1979-07-14 1982-07-20 Barmag Barmer Maschinenfabrik Apparatus for false twisting yarn
US4370851A (en) * 1980-06-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having adjustable friction discs
US4370852A (en) * 1980-07-09 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4370853A (en) * 1979-07-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4372106A (en) * 1980-06-14 1983-02-08 Barmag Barmer Maschinenfabrik Ag Drive system for yarn false twisting apparatus
US4383405A (en) * 1980-09-08 1983-05-17 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus and method
US4387557A (en) * 1981-03-21 1983-06-14 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4391091A (en) * 1981-03-17 1983-07-05 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4402179A (en) * 1981-04-09 1983-09-06 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having improved thread-up capability
US4406116A (en) * 1980-09-15 1983-09-27 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having friction discs
US4408449A (en) * 1980-06-26 1983-10-11 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4414803A (en) * 1979-07-14 1983-11-15 Barmag Barmer Maschinenfabrik Ag False twisting apparatus
DE3324243A1 (de) * 1982-07-09 1984-02-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Falschzwirnkraeuselmaschine und verfahren zur ueberbrueckung kurzzeitiger spannun gsausfaelle an textilmaschinen
US5237810A (en) * 1989-09-01 1993-08-24 Maschinenfabrik Rieter Ag Method and apparatus for false twist spinning
US5579629A (en) * 1989-03-23 1996-12-03 Rhone-Poulenc Viscosuisse S.A. Method of producing a friction texturized polyester filament yarn and yarn made thereby

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428092A1 (fr) * 1978-06-06 1980-01-04 Asa Sa Dispositif pour donner une torsion alternee a au moins un fil en mouvement
FR2484472A1 (fr) * 1980-06-14 1981-12-18 Barmag Barmer Maschf Dispositif de fausse torsion a friction pour la texturation par fausse torsion de fils synthetiques et son procede de fonctionnement
FR2484474B1 (fr) * 1980-06-14 1985-06-21 Barmag Barmer Maschf Dispositif de fausse torsion a friction

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522332A (en) * 1945-08-24 1950-09-12 Abbott Machine Co Textile drafting apparatus
US2943433A (en) * 1955-03-04 1960-07-05 American Enka Corp Crimping or curling of yarns or threads
US3003304A (en) * 1955-10-31 1961-10-10 Rasmussen Ole-Bendt Method of manufacturing non-woven fabrics and yarns
US3156084A (en) * 1960-05-02 1964-11-10 Res Nv False twist device
US3373554A (en) * 1965-05-06 1968-03-19 Heberlein Patent Corp Yarn twisting apparatus
US3382663A (en) * 1964-12-22 1968-05-14 Shell Oil Co Manufacture of fibrillated strands
US3395525A (en) * 1967-01-13 1968-08-06 Phillips Petroleum Co Method and apparatus for frictionally fibrillating films

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522332A (en) * 1945-08-24 1950-09-12 Abbott Machine Co Textile drafting apparatus
US2943433A (en) * 1955-03-04 1960-07-05 American Enka Corp Crimping or curling of yarns or threads
US3003304A (en) * 1955-10-31 1961-10-10 Rasmussen Ole-Bendt Method of manufacturing non-woven fabrics and yarns
US3156084A (en) * 1960-05-02 1964-11-10 Res Nv False twist device
US3382663A (en) * 1964-12-22 1968-05-14 Shell Oil Co Manufacture of fibrillated strands
US3373554A (en) * 1965-05-06 1968-03-19 Heberlein Patent Corp Yarn twisting apparatus
US3395525A (en) * 1967-01-13 1968-08-06 Phillips Petroleum Co Method and apparatus for frictionally fibrillating films

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702055A (en) * 1968-08-14 1972-11-07 Mitsubishi Rayon Co Method for manufacturing false twisted threads from thermoplastic resin tapes
US3772873A (en) * 1970-12-24 1973-11-20 Teijin Ltd Process for false-twisting a yarn
US3857233A (en) * 1973-02-19 1974-12-31 Hoechst Ag Voluminous filament yarn and process to prepare same
US3857232A (en) * 1973-02-19 1974-12-31 Hoechst Ag Filament yarn and process to prepare same
US4145871A (en) * 1977-01-21 1979-03-27 Toshiba Kikai Kabushiki Kaisha False twisting apparatus
US4370853A (en) * 1979-07-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4339915A (en) * 1979-07-14 1982-07-20 Barmag Barmer Maschinenfabrik Apparatus for false twisting yarn
US4414803A (en) * 1979-07-14 1983-11-15 Barmag Barmer Maschinenfabrik Ag False twisting apparatus
US4370851A (en) * 1980-06-14 1983-02-01 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having adjustable friction discs
US4372106A (en) * 1980-06-14 1983-02-08 Barmag Barmer Maschinenfabrik Ag Drive system for yarn false twisting apparatus
US4389841A (en) * 1980-06-14 1983-06-28 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus
US4408449A (en) * 1980-06-26 1983-10-11 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4370852A (en) * 1980-07-09 1983-02-01 Barmag Barmer Maschinenfabrik Ag Friction false twisting apparatus
US4383405A (en) * 1980-09-08 1983-05-17 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus and method
US4406116A (en) * 1980-09-15 1983-09-27 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having friction discs
US4391091A (en) * 1981-03-17 1983-07-05 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4387557A (en) * 1981-03-21 1983-06-14 Barmag Barmer Maschinenfabrik Ag False twisting apparatus and method
US4402179A (en) * 1981-04-09 1983-09-06 Barmag Barmer Maschinenfabrik Ag Yarn false twisting apparatus having improved thread-up capability
DE3324243A1 (de) * 1982-07-09 1984-02-16 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Falschzwirnkraeuselmaschine und verfahren zur ueberbrueckung kurzzeitiger spannun gsausfaelle an textilmaschinen
US5579629A (en) * 1989-03-23 1996-12-03 Rhone-Poulenc Viscosuisse S.A. Method of producing a friction texturized polyester filament yarn and yarn made thereby
US5237810A (en) * 1989-09-01 1993-08-24 Maschinenfabrik Rieter Ag Method and apparatus for false twist spinning

Also Published As

Publication number Publication date
BE707571A (de) 1968-04-16
FR1551264A (de) 1968-12-27
CH1704167A4 (de) 1970-09-30
DE1660664A1 (de) 1971-06-16
GB1210408A (en) 1970-10-28
DK120768B (da) 1971-07-12

Similar Documents

Publication Publication Date Title
US3488941A (en) Process for splitting a narrow film or false twisting a fibrous material
US3079746A (en) Fasciated yarn, process and apparatus for producing the same
US5497608A (en) Short fiber and continuous filament containing spun yarn-like composite yarn
US3094834A (en) Apparatus for simultaneously stretching and falsetwisting yarn
US3564677A (en) Method and apparatus of treating material to change its configuration
US7127784B2 (en) Treatment of filament yarns to provide spun-like characteristics and yarns and fabrics produced thereby
US4341063A (en) Air textured yarns
JPS63503394A (ja) 繊維を紡績する方法及び装置
US4265082A (en) Spun-like yarn and a process for manufacturing the same
US4016329A (en) Multifilament
US3448501A (en) Process for the manufacture of a compacted yarn
JPS6119733B2 (de)
US3664115A (en) Method of making a semi-continuous filament combination yarn
US4364223A (en) Process for producing a combination yarn
US3796035A (en) Semi-continuous filament combination yarn
US3527043A (en) Means and process for producing a false twist by friction
US3082591A (en) Apparatus and process for manufacturing wrapped yarns
US3417560A (en) Method and apparatus for producing a semi-continuous filament yarn
US6854167B2 (en) Treatment of filament yarns to provide spun-like characteristics and yarns and fabrics produced thereby
US3422616A (en) Manufacture of threads,cords,ropes and like articles
US4287714A (en) False-twisting system
US3175348A (en) Process and apparatus for making bulked filament yarns
US2030252A (en) Manufacture of textile materials
EP0505641B1 (de) Verbundgarn aus kurzen und langen Fasern und Verfahren und Vorrichtung zu dessen Herstellung
US3439385A (en) Tow spreading and width control device