US3621646A - Composite fibrid yarns and method of manufacture - Google Patents

Composite fibrid yarns and method of manufacture Download PDF

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US3621646A
US3621646A US879454A US3621646DA US3621646A US 3621646 A US3621646 A US 3621646A US 879454 A US879454 A US 879454A US 3621646D A US3621646D A US 3621646DA US 3621646 A US3621646 A US 3621646A
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yarn
fibrids
polymer substrate
fibrid
polymer
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Emilian Bobkowicz
Andrew John Bobkowicz
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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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/408—Flocked yarns
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments

Definitions

  • Novel composite yarn is produced which comprises a continuous polymer substrate constituent combined with fibrids which are embedded within the polymer substrate and consolidated therewith; these fibrids generally protrude outwardly from the polymer substrate constituent in the form of filamentous units having an average length of from /8 to /2 inch and a fineness of between 0.2 and 1 denier as well as a characteristic specific surface above 2 m. /g.; they impart to the composite yarn a fibrous surface texture; this novel yarn is produced by a process generally involving extrusion of the polymer substrate and combination as well as consolidation of the extruded substrate with the fibrid units through pressure and cooling.
  • This invention relates to a novel composite yarn comprising a continuous polymer substrate constituent into which fibrids are embedded and with which they are combined and consolidated, this resulting in a yarn of high strength and absorbency as well as an excellent fibrillated surface texture; the invention also provides a method of manufacturing such yarn in a continuous sequence of operations.
  • Fibrids are a remarkable set of materials with well known properties of extremely high strength, extremely high specific surface and fineness. Defining fibrids, they are a synthetic system which occupies the position between a fiber and a film and consists of a continuous strand of interconnected segments of fine fibers and thin films forming an irregular three dimensional network of plexifilamentous and ribbon shaped components which, in fact, represent a new state of matter in the world of colloids. Since such systems are hybrids between fibers and films, they are called fibrids.
  • the water binding capacity of fibrids which is more than 2 g. of water per g. of fibrid, as well as their adhesivity and softening characteristics can be varied over a very wide range since it has been possible by adequate methods to prepare fibrid systems from virtually all synthetic polymers ranging from rigid, high melting polyamides and polyesters to soft and rubbery polyurethanes and polyethers.
  • fibrids can be produced by a variety of methods including use of interfacial polymerization combined with shredding, polymer precipitation under shear conditions, and flash spinning.
  • the fine fibrid elements result in entities of between about 0.2 and 1.0 denier and ribbon shaped parts between about 0.1 and 0.5 mil, all from about A; to /2 inch long on the average. Also in the drawn condition they may exhibit fiber strengths of up to 23 grams per denier.
  • fibrids intertwined, interconnected structure of short and irregularly shaped units
  • fibrids are unsuitable for processing into yarns by conventional fiber-to-yarn conversion technologies and equipment involving the usual carding, drawing, drafting and eventually twisting operations.
  • the main application they have found is in sheet form where they have been calendered from mat forms into bonded sheets resembling paper in appearance but exhibiting a very high strength and tear resistance with excellent absorption properties.
  • McIntosh et a1., etc. they all end up with some specialty yarns for some specific purposes, produced by rather complicated and expensive techniques, which do not really solve the basic problem of providing a way for direct utilization of fibrids with their excellent properties as a component of the resulting yarn itself and to do it in a simple, etficient and very economical manner as has now been accomplished by the present applicants.
  • This method generally comprises the introduction of staple fibers and tacky polymer substrate between a pair of rotating pressure rolls having continuous circumferential grooves and positioned face to face so that each male member of the grooved surface of one roll fits into the corresponding female member of the other roll to form at the nip point of said rolls cavities adjustable in depth and having edges adapted to separate the resulting composite staple fiber polymer substrate material into a plurality of fiber tapes of desired width, with simultaneous consolidation of these fibertapes within the cavities.
  • the tacky polymer substrate is preferably extruded from an extrusion die in the form of a plurality of parallel strands, each strand entering one groove of the pressure rolls.
  • This method generally comprises: linearly supplying to feed-in rolls a continuous strand or tape of substantially consolidated composite fibrous material consisting of staple fibers and thermoplastic polymer substrate; heating said strand or tape within a fiber restrictive zone to a point where the polymer substrate of said composite material becomes plastic without reaching the melting point of said polymer; subjecting said strand or tape within said fiber restrictive zone to a twisting torque for imparting thereto, while the polymer substrate is in plastic condition, a predetermined twist with helical rearrangement of fibers; cooling to coagulate the polymer while the strand or tape is in twisted condition; and linearly winding up the obtained consolidated spun yarn on a collecting roll; the feed-in rolls and the collecting roll constituting two fixed pinch points between which the twist is applied and substantially retained.
  • the fiber restrictive zone preferably consists of
  • the principal object of the present invention to provide a novel fibrid-polymer composite yarn having improved strength and water absorbency as well as a surface area of the fibrillated surface texture above 2 m. g.
  • the fibrous texture of the novel yarn is composed of fibrid particles having a water binding capacity enabling retention of at least 2.0 grams of water per gram of fibrid particles under a compression load of about 39 grams per square centimeter.
  • Another object of the invention is to provide a novel method for producing said yarn in simple, efficient and economical manner, by means of a continuous sequence of operations.
  • This novel yarn com prises a continuous polymer substrate constituent within which are embedded fibrids and with which they are combined and consolidated, said fibrids generally protruding outwardly from said polymer substrate in the form of small filamentous units having on the average a length of from A5 to /2 inch and a fineness of between about 0.2 and 1.0 denier as well as a fiber strength which in the drawn condition may reach values of up to 23 grams per denier.
  • These fibrids, in combination with said polymer substrate provide a composite yarn having the above mentioned excellent properties and characteristics as well as the desired fibrous surface texture.
  • the continuous polymer substrate constituent may have a predetermined molecular orientation, and if spun yarn is desired, it may be twisted to a required degree.
  • the polymer substrate forming the continuous constituent of the novel yarn may consist of extrudable thermoplastic polymers (e.g. nylon, polypropylene, acrylonitrile, polyethylene, polyesters, polyvinylidene chloride, rubber compounds etc.) or of extrudable thermosetting polymers (e.g. phenol formaldehyde resins, urea formaldehyde resins and the like) or of their suitable blends.
  • the fibrids may consist of hard fibrids which are generally white, flulfy, fibrous systems with high melting points (above C. and up to 300 C.), complete insensitivity to the attack of water or organic solvents, large specific surface areas of up to 50 m. /g. and a considerably water binding capacity of more than 10 g.
  • hard fibrids are those made from 66 nylon, 610 nylon, polyesters, polyurethanes, polyureids, polyacrylonitrile, copolymers of acrylonitrile with minor quantities of vinyl acetate methacrylate, methylmethacrylate, vinylpyrrolidene and the like, copolyamides of 6, 66 and 610 nylon, copolyesters containing terephthalic acid and isophthalic or p-hydroxylbenzoic acid as components, derivatives of the polymers, such as the halogenated polyhydrocarbons, cellulosics, etc.
  • hard polymers include, for example, acrylonitrile polymers and copolymers such as those formed by acrylonitrile with methylacrylate or vinyl chloride; polyacrylic and polymethylacrylic esters such as poly methylmethacrylate, polyvinyl chloride and copolymers of vinyl chloride with vinyl esters, acrylonitrile, vinylidene chloride and the like; vinylidene chloride polymers; polymers and copolymers from hydrocarbon monomers such as styrene, ethylene, propylene and the like, especially copolymers of those monomers with acrylonitrile and/or vinyl chloride; polymers from cyclic acetals, polychlorotrifluroethylene; polyvinyl alcohol; partially hydrolized polyvinyl esters; polyamides such as polyhexamethylene adipamide, polyethylene sebacamide, polymethylene bis (p-cyclohexylene) adipamide, polycaprolactam, and copolyamides, such as
  • Soft fibrids are also suitable to be used according to this invention depending on the desired properties of the final yarn. These are generally white, fluffy, low melting and eventually organic soluble systems which have specific surface areas and water binding capacities similar to those of the hard fibrids and form webs which excell through their elongation, elasticity and recovery power even from considerable strains. Soft fibrids are preferably made by the precipitation method and can be obtained from a wide variety of soft and elastomeric polymers such as those represented by block copolymers of polyester or polyether segments which are linked together by aromatic diisocynate stretches; plasticized polyvinylchloride or polymethylmethacrylate and copolymers of butadiene with acrylonitrile or styrene are also suitable.
  • Especially representative soft polymers are plasticized vinyl polymers and the condensation elastomers, including copolymers with vinylacetate and vinyldene chloride, suitable synthetic rubbers, modified addition polymers such as chlorosulfonated polyethylene, a variety of low modulus condensation elastomers and segmented condensation elastomers, etc.
  • suitable synthetic rubbers such as chlorosulfonated polyethylene
  • modified addition polymers such as chlorosulfonated polyethylene
  • a variety of low modulus condensation elastomers and segmented condensation elastomers a variety of low modulus condensation elastomers and segmented condensation elastomers, etc.
  • Various combinations or blends of hard and soft fibrids can also be used according to the present invention depending upon the required properties of the final yarn product. Also, if desired, combinations of fibrids and conventional staple fibers may be employed to produce some special effects.
  • this process comprises extruding at least one soft strand of an extrudable polymer substrate from an extrusion head towards the nip of a pair of lamination and consolidation rolls, continuously supplying on at least one side of said pair of lamination and consolidation rolls an intertangled mass of fibrids into a shredding, licker-in means Where they are separated and fibrillated into individual substantially parallelized fibrid entities having the form of filamentous units with an average length of from to /2 inch, forwarding said fibrid units into the nip of the lamination and consolidation rolls where they are brought into contact with the soft strand of the polymer substrate; and laminating and consolidating these fibrid units withsaid strand of polymer substrate to form the desired composite fibridpolymer yarn.
  • the extruded soft strand of polymer substrate may also be stretched to effect molecular orientation thereof, e.g. by driving the lamination and consolidation rolls at a higher speed than the extrusion rate of the polymer substrate.
  • additional already prepared and strongly oriented filaments of a same or different polymer substrate which filaments during the lamination and consolidating operation will a'malgamate with the just extruded and still tacky strands and form a unitary blend of substantially improved longitudinal strength; the prepared and oriented filaments in this blend provide the improved strength while the just extruded substrate provides the tackiness required for the consolidation of the fibrids with the polymer.
  • the pressure rolls may be cooled to accelerate the consolidation effect. If twisted yarn is desired, then a predetermined twist may be imparted to the strands leaving the consolidation and lamination rolls. It should also be mentioned that these lamination and consolidation rolls may be grooved as already mentioned above and as described in applicants copending US. application Ser. No. 729,089 and if the extruded polymer substrate is made of a thermoplastic material, the twisting operation is preferably carried out as disclosed in applicants copending US. application Ser. No. 778,714 which has also been summarized hereinbefore.
  • FIG. 1 is a side view of a zero twist yarn according to the present invention
  • FIG. 2 is a section view through line AA of one embodiment of said yarn
  • FIG. 3 is a section view through line AA of another embodiment of said yarn
  • FIG. 4 is a side view of a twisted yarn according to the present invention.
  • FIG. 5 is a section view through line B-B of one embodiment of said yarn
  • FIG. 6 is a section view through line BB of another embodiment of said yarn
  • FIG. 7 is a photomicrograph of a yarn produced ac cording to the present invention.
  • FIG. 8 is a schematic, partially sectional, side-elevation view of one non-limitative embodiment of an installation for carrying out the process according to the present invention.
  • the novel composite yarn 12 will consist of a continuous polymer substrate constitutent 10 which may be straight (FIG. 1) or twisted (FIG. 4) and which may have fibrids 11 embedded on one side thereof (FIGS. 2 and 5) or on both sides (FIGS. 3 and 6). These fibrids 11 are in the form of filamentous units each of which may contain many individual fibrids.
  • the yarn is generally in the form of a strand of somewhat flattened cross-section having fibrids protruding from one or both sides thereof.
  • these strands may also be preformed into yarns of generally round crosssection.
  • a curtain of soft strands 10 which will constitute the continuous polymer constituent of the resulting yarn is extruded from the extruder head 14 and toward the nip of a pair of lamination and consolidation rolls 15, 16. Simultaneously, an intertangled mat 17 of fibrids is supplied into a shredding, licker-in means 20 through feeding roller 18.
  • the shredding, licker-in means comprise a rotatable cylinder 21 with sharp teeth 22 protruding on its surface, which teeth may have predetermined size, shape and outward orientation depending on the desired nature of the final fibrid units.
  • the cylinder 21 is preferably hollow and perforated on its surface and inside the cylinder there are provided suction producing means 23 and air-blowing means 24 within separate compartments.
  • the cylinder 21 is mounted within a suitable casing 25 having an inlet aperture 26 and an outlet aperture 27.
  • This latter device also preferably consists of a perforated cylinder 31 having a plurality of circumferential parallel grooves into which the disintegrated indi vidual fibrid units are pulled by suction means 32 mounted within the cylinder 31 and in which grooves they are subtantially parallelized by sequential fibrid element deposition and organization under the influence of the suction force field created by said suction means 32.
  • the so parallelized fibrid units are projected, generally in the form of continuous loosely held fibrid rib bons 41, toward the nip of the lamination and consolidation rolls 15, 16 where they contact the still tacky and soft strands 10 of polymeric material.
  • the suction means 32 are comprised within the drum 31 in a chamber defining about half the internal space of said drum, however, as soon as the fibrid units reach a point where the suction no longer exists, they become loose from the drum and are projected :by the rotating motion of the drum 31 towards the nip of the rolls 15, 16 which generally rotate at a surface speed higher than that of drum 31, thus aiding in transportation of said fibrid ribbons 41 from drum 31 to rolls 15, 16, and at the same time providing some additional parallelization of the individual fibrid units within said ribbon structures 41.
  • the obtained composite yarn 12 can simply be linearly wound on a collecting roll 33 to form a package 34 of zero twist yarn.
  • the yarn 12 upon exit from the rolls 15, 16 the yarn 12 can be twisted or spun in any desired manner to form twisted yarn, which is then wound into package 34 on the collecting roll 33.
  • FIG. 8 One preferred embodiment of twisting the yarn, in which the polymer 10 ismade of thermoplastic material, is also illustrated in FIG. 8.
  • zero twist yarn 12 after leaving the rolls 15, 16, passes within a restricted longitudinal groove 35 provided with heating and cooling means 36 and 37, separated by an insulating layer 42, capable of producing proper temperature control in said groove.
  • Suction device 38 arranges the protruding fibrous elements in a controlled direction while the yarn is being twisted and rotated in said groove 35 providing by frictonal force induced controlled laying and wrapping of said fibrous elements around the yarn 12 while it is being formed.
  • waste removal is also being provided at this point by suction means 38.
  • the temperature is so controlled as to render the thermoplastic polymer somewhat plastic without however reaching the melting point of that polymer.
  • twisting torque is imparted to the strand 12 by a twisting device 43 from which it travels upwards, whereby a predetermined twist with helical rearrangement of the fibrids is achieved.
  • cooling is effected to coagulate the polymer while the strand is in such twisted condition.
  • the cooling may be effected or helped by the cooling device 37.
  • it may be achieved by compressed air or simply by providing a sufiicient distance between the point where twist is imparted into the yarn within the groove 35 and twisting device 43 proper.
  • the yarn is linearly wound on the collecting roll 33 to form package 34.
  • Rolls 39, 40 are used to pull and guide yarn 12 while it is being twisted.
  • zero twist yarns or strands are desired, they may be produced as disclosed in applicants US. patent application Ser. No. 729,089 of May 14, 1968, for fibertapes. Obviously when the fibertapes are narrow enough they will constitute Zero twist yarn.
  • the ratio may be /5, or the like, depending on the polymer, the operation conditions, the thickness of the extruded strands, the degree of orientation desired etc. Care must be taken, however, not to break the polymer strand while stretching the same.
  • Further orientation may be imparted between rolls 15, 16 and 39, 40 by driving the latter at a greater speed than the former.
  • an improved strength may be achieved by introducing ready filaments 10a which have been oriented to a very high degree and allow them to blend with the just extruded strands 10.
  • an assembly such as 19 for disintegrating and forwarding fibrids in the form of loose filamentous substantially parallelized units toward the nip of laminating and consolidating rolls 15, 16 can also be provided at the other side by said rolls, namely beside roll 16.
  • the fibrids will be continuously supplied from both sides and will be contacted and laminated on both sides of the extruded strands 10. This will produce a yarn with even better and more homogeneous fibrous surface texture.
  • the yarn of the present invention may be used for many purposes. To mention just a few: carpet backing, upholstery, specialized applications such as mats of different types, industrial applications such as bags, belting, ducks, etc. In finer counts it can be used for apparel, e.g. ladies overcoats, hand knitted yarns, etc.
  • yarns may be produced which can ultimately be transformed into fabrics of high absorbency, high retention of absorbed liquids, excellent heat sealability, high wet strength, good permeability to air and liquids, with simultaneous impermeability to solids, excellent filtration characteristics, good electrical insulation properties as well as chemical resistance and dielectric strength. All these features can'be achieved by men of the art through the practice of this invention and by normal adjustments and selections of the operating conditions and materials.
  • a composite yarn comprising a continuous polymer substrate constituent combined with fibrids which are embedded within said polymer substrate and consolidated therewith, said fibrids generally protruding outwardly from said polymer substrate constituent in the form of filamentous units having an average length of from A3 to /2 inch, a fineness of between 0.2 and 1 denier and specific surface above 2 m. /g., and imparting to the composite yarn a fibrous surface texture.
  • a composite yarn according to claim 1 characterized in that said yarn is in twisted condition.
  • thermoplastic polymer selected from the group consisting of nylon, polyethylene, polypropylene, acrylonitrile, polyesters, polyvinylidene chloride and rubber compounds.
  • thermosetting polymer selected from the group consisting of phenol-formaldehyde resins and urea-formaldehyde resins.
  • a composite yarn according to claim 1, wherein the fibrid units are hard fibrids selected from the group consisting of nylon 66, nylon 610, polyesters, polyurethanes, polyureids, polyacrylonitrile, copolymers of acrylonitrile with minor quantities of vinyl acetate, methacrylate, methylmethacrylate or vinylpyrrolidene, copolyamides of nylons 6, 66 and 610, copolyesters containing terephthalic acid and isophthalic or p-hydroxylbenzoic acid as components, polythioesters, polysulfonamides, polysulfones, polyoxymethylelne and their copolymers.
  • the fibrid units are hard fibrids selected from the group consisting of nylon 66, nylon 610, polyesters, polyurethanes, polyureids, polyacrylonitrile, copolymers of acrylonitrile with minor quantities of vinyl acetate, methacrylate, methylmethacrylate
  • fibrid units are soft fibrids selected from the group consisting of plasticised vinyl polymers, block copolymers of polyester or' polyether segments which are linked together by aromatic diisocyanate stretches, and plasticized polyvinylchloride or polymethylmethacrylate and copolymers of butadiene with acrylonitrile or styrene.
  • Process for producing in a continuous sequence of operations a composite yarn having a continuous polymer substrate constituent combined with fibrids which are embedded into said polymer substrate and consolidated therewith comprises: extruding at least one soft strand of an extrudable polymer substrate from an extrusion head and towards a nip of a pair of lamination and consolidation rolls; continuously supplying on at least one side of said pair of lamination and consolidation rolls an intertangled mat of fibrids into a shredding, licker-in means where they are separated and fibrillated into individual substantially parallelized fibrid entities in the form of filamentous units having an average length of A3 to /2 inch; forwarding said fibrid units into the nip of the lamination and consolidation rolls where they are brought into contact with the soft strands of the polymer substrate; and laminating and consolidating said fibrid units with said strand of polymer substrate to form the desired composite fibrid-polymer yarn.
  • Process according to claim 9 which comprises stretching said soft strand of polymer substrate by driving said lamination and consolidation rolls at a higher speed than the extrusion rate of the polymer substrate, thus imparting to the latter a predetermined molecular orientation.
  • Process according to claim 9, which comprises introducing at the side of each said extruded soft strand of polymer substrate and towards the nip of said lamination and consolidation rolls at least one ready filament of predetermined strength and properties.
  • Process according to claim 9' which comprises cooling the rolls or the material during the lamination and consolidation step.

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  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Nonwoven Fabrics (AREA)
US879454A 1969-09-15 1969-11-24 Composite fibrid yarns and method of manufacture Expired - Lifetime US3621646A (en)

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CA880988A CA880988A (en) 1969-09-15 1969-09-15 Composite fibrid yarns and method of manufacture

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JP (1) JPS499424B1 (fr)
BE (1) BE751703A (fr)
CA (1) CA880988A (fr)
CH (1) CH519594A (fr)
FR (1) FR2057698A5 (fr)
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987612A (en) * 1973-09-19 1976-10-26 Bobkowicz E Method and apparatus for manufacture of composite yarn products
US4244174A (en) * 1977-11-03 1981-01-13 The Bobtex Corporation, Ltd. Poy yarn compositions
US4677818A (en) * 1984-07-11 1987-07-07 Toho Beslon Co., Ltd. Composite rope and manufacture thereof
US4719744A (en) * 1982-06-07 1988-01-19 Burlington Industries, Inc. Vacuum spinning method
US4726098A (en) * 1986-10-24 1988-02-23 Burlington Industries, Inc. Combination vortex action processing and melt sizing of spun yarn
US5035111A (en) * 1987-10-02 1991-07-30 Stamicarbon B.V. Combinations of polymer filaments or yarns having a low coefficient of friction and filaments or yarns having a high coefficient of friction, and use thereof
US5392588A (en) * 1982-06-07 1995-02-28 Burlington Industries, Inc. Spinning with hollow rotatable shaft and air flow
WO1995022644A1 (fr) * 1994-02-21 1995-08-24 KRØYER, Ingelise Fibres synthetiques combinees a d'autres fibres
EP1321546A2 (fr) * 2001-12-14 2003-06-25 Polyplastics Co Ltd Fil plat à résine de polyoxyméthylène, procédé de production et utilisation
US20080032131A1 (en) * 2006-07-21 2008-02-07 Sa Schappe Yarn intended for making up a cut-resistant and abrasion-resistant textile surface
WO2009026478A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés fabriqués avec des mélanges de fibres à tige rigide et de fibres dérivées de diaminodiphénylsulfone, tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
US20090052092A1 (en) * 2007-08-21 2009-02-26 Headway Technologies, Inc. Perpendicular magnetic recording head laminated with AFM-FM phase change material
WO2009026481A1 (fr) * 2007-08-22 2009-02-26 E.I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone et de fibres modacryliques, et tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
WO2009026480A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone, fibres de faible thermorétraction, fibres résistant à la flamme et fibres antistatiques, et tissus et vêtements fabriqués avec desdits fils e
WO2009026479A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone et de fibres textiles, tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
US20090053954A1 (en) * 2007-08-22 2009-02-26 Reiyao Zhu Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and high modulus fibers and fabrics and garments made therefrom and methods for making same
US20130298520A1 (en) * 1996-12-31 2013-11-14 The Quantum Group, Inc. Composite Elastomeric Yarns And Fabric
US20190062949A1 (en) * 2016-03-03 2019-02-28 Teijin Aramid B.V. Process and device for splitting a tape

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL176647C (nl) * 1977-05-18 1985-05-17 Hughes Aircraft Co Werkwijze ter bereiding van een vezels en hars bevattend materiaal, en onder toepassing van dit materiaal verkregen voorwerpen.
CA1108813A (fr) * 1977-11-03 1981-09-15 Andrew J. Bobkowicz Files de copolymeres d'ethylene-vinyle-acetate
DE3806275A1 (de) * 1988-02-27 1989-09-07 Uniroyal Englebert Textilcord Flockgarn
DE4007607A1 (de) * 1990-03-09 1991-09-12 Schubert & Salzer Maschinen Spinnverfahren und vorrichtung zur herstellung eines garnes
FR2673202B1 (fr) * 1991-02-21 1994-01-07 Rhone Poulenc Fibres Retors thermofixe en monofilaments synthetiques.
JP6627936B1 (ja) 2018-08-30 2020-01-08 住友大阪セメント株式会社 静電チャック装置および静電チャック装置の製造方法

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3987612A (en) * 1973-09-19 1976-10-26 Bobkowicz E Method and apparatus for manufacture of composite yarn products
US4244174A (en) * 1977-11-03 1981-01-13 The Bobtex Corporation, Ltd. Poy yarn compositions
US4719744A (en) * 1982-06-07 1988-01-19 Burlington Industries, Inc. Vacuum spinning method
US5392588A (en) * 1982-06-07 1995-02-28 Burlington Industries, Inc. Spinning with hollow rotatable shaft and air flow
US4677818A (en) * 1984-07-11 1987-07-07 Toho Beslon Co., Ltd. Composite rope and manufacture thereof
US4726098A (en) * 1986-10-24 1988-02-23 Burlington Industries, Inc. Combination vortex action processing and melt sizing of spun yarn
US5035111A (en) * 1987-10-02 1991-07-30 Stamicarbon B.V. Combinations of polymer filaments or yarns having a low coefficient of friction and filaments or yarns having a high coefficient of friction, and use thereof
WO1995022644A1 (fr) * 1994-02-21 1995-08-24 KRØYER, Ingelise Fibres synthetiques combinees a d'autres fibres
US9234304B2 (en) * 1996-12-31 2016-01-12 The Quantum Group, Inc. Composite elastomeric yarns and fabric
US20130298520A1 (en) * 1996-12-31 2013-11-14 The Quantum Group, Inc. Composite Elastomeric Yarns And Fabric
EP1321546A2 (fr) * 2001-12-14 2003-06-25 Polyplastics Co Ltd Fil plat à résine de polyoxyméthylène, procédé de production et utilisation
US7022280B2 (en) 2001-12-14 2006-04-04 Polyplastics Co., Ltd. Process of making a flat yarn from polyoxymethylene film
EP1321546A3 (fr) * 2001-12-14 2003-12-03 Polyplastics Co Ltd Fil plat à résine de polyoxyméthylène, procédé de production et utilisation
US20080032131A1 (en) * 2006-07-21 2008-02-07 Sa Schappe Yarn intended for making up a cut-resistant and abrasion-resistant textile surface
US7485363B2 (en) * 2006-07-21 2009-02-03 Sa Schappe Yarn intended for making up a cut-resistant and abrasion-resistant textile surface
US20090052092A1 (en) * 2007-08-21 2009-02-26 Headway Technologies, Inc. Perpendicular magnetic recording head laminated with AFM-FM phase change material
WO2009026481A1 (fr) * 2007-08-22 2009-02-26 E.I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone et de fibres modacryliques, et tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
US7700190B2 (en) 2007-08-22 2010-04-20 E.I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and textile fibers and fabrics and garments made therefrom and methods for making same
WO2009026479A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone et de fibres textiles, tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
US20090053951A1 (en) * 2007-08-22 2009-02-26 Reiyao Zhu Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and textile fibers and fabrics and garments made therefrom and methods for making same
US20090053954A1 (en) * 2007-08-22 2009-02-26 Reiyao Zhu Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and high modulus fibers and fabrics and garments made therefrom and methods for making same
US7537831B2 (en) 2007-08-22 2009-05-26 E.I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and modacrylic fibers and fabrics and garments made therefrom and methods for making same
US7537830B2 (en) 2007-08-22 2009-05-26 E.I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone, low thermal shrinkage fibers, flame resistant fibers, and antistatic fibers and fabrics and garments made therefrom and methods for making same
US20090188024A1 (en) * 2007-08-22 2009-07-30 E. I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone, low thermal shrinkage fibers, flame resistant fibers, and antitstatic fibers and fabrics and garments made therefrom and methods for making same
US7700191B2 (en) 2007-08-22 2010-04-20 E.I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone and high modulus fibers and fabrics and garments made therefrom and methods for making same
WO2009026480A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés résistant à la flamme fabriqués avec des mélanges de fibres dérivées de diaminodiphénylsulfone, fibres de faible thermorétraction, fibres résistant à la flamme et fibres antistatiques, et tissus et vêtements fabriqués avec desdits fils e
US7749601B2 (en) 2007-08-22 2010-07-06 E. I. Du Pont De Nemours And Company Flame resistant spun staple yarns made from blends of fibers derived from diamino diphenyl sulfone, low thermal shrinkage fibers, flame resistant fibers, and antistatic fibers and fabrics and garments made therefrom and methods for making same
US8166743B2 (en) 2007-08-22 2012-05-01 E.I. Du Pont De Nemours And Company Spun staple yarns made from blends of rigid-rod fibers and fibers derived from diamino diphenyl sulfone and fabrics and garments made therefrom and methods for making same
CN101784708B (zh) * 2007-08-22 2012-07-18 纳幕尔杜邦公司 由刚棒纤维和得自二氨基二苯砜的纤维的共混物制成的短纤纱和由其制得的织物和衣服以及它们的制备方法
US20090053952A1 (en) * 2007-08-22 2009-02-26 Reiyao Zhu Spun staple yarns made from blends of rigid-rod fibers and fibers derived from diamino diphenyl sulfone and fabrics and garments made therefrom and methods for making same
KR101476482B1 (ko) * 2007-08-22 2014-12-24 이 아이 듀폰 디 네모아 앤드 캄파니 다이아미노 다이페닐 설폰으로부터 유도된 섬유, 저 열수축 섬유, 난연성 섬유 및 정전기 방지성 섬유의 블렌드로부터 제조된 난연성 방적 스테이플 얀 및 그로부터 제조된 천과 의복 및 그의 제조 방법
KR101476874B1 (ko) * 2007-08-22 2014-12-26 이 아이 듀폰 디 네모아 앤드 캄파니 다이아미노 다이페닐 설폰으로부터 유도된 섬유와 모드아크릴 섬유의 블렌드로부터 제조된 난연성 방적 스테이플 얀 및 그로부터 제조된 천과 의복 및 그의 제조 방법
WO2009026478A1 (fr) * 2007-08-22 2009-02-26 E. I. Du Pont De Nemours And Company Fils courts filés fabriqués avec des mélanges de fibres à tige rigide et de fibres dérivées de diaminodiphénylsulfone, tissus et vêtements fabriqués avec lesdits fils et leurs procédés de fabrication
US20190062949A1 (en) * 2016-03-03 2019-02-28 Teijin Aramid B.V. Process and device for splitting a tape
US11208737B2 (en) * 2016-03-03 2021-12-28 Teijin Aramid B.V. Process and device for splitting a tape

Also Published As

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BE751703A (fr) 1970-11-16
JPS499424B1 (fr) 1974-03-04
GB1285003A (en) 1972-08-09
CH519594A (fr) 1972-02-29
DE2042762A1 (de) 1971-05-27
DE2042762B2 (de) 1976-09-09
CA880988A (en) 1971-09-14
NL7013252A (fr) 1971-03-17
FR2057698A5 (fr) 1971-05-21

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