Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
  • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber

Definitions

• the present, invention relates to a side-by-side type
• the present invention relates to a
• Synthetic fibers have reached the level not inferior to
• property is a property which is not easy for synthetic fibers to
• shrinkage composite false twisted yarn is a method that provides
• one component yarn is released or removed by a physical force
• polyester fiber is dyed using a disperse dye while a polyurethane
• fiber has to be dyed with an acid dye or a metal-containing dye.
• polyurethane fiber are mixed upon manufacturing woven or knitted
• the final product is weak to a chlorine bleaching agent and easily hydrolysable by NaOH.
• PBT terephthalate
• the present invention provides a side-by-side type
• the present invention provides a method for
• JIS L 1090 is 20 to 75% of a boiling water shrinkage (Sr ⁇ . ) measured
• thermoplastic resin to the present invention consisting two kinds of thermoplastic resin
• thermoplastic polymers having a number average molecular
• weight difference ( ⁇ Mn) of 5, 000 to 15, 000 are used upon spinning and the composite filament is drawn and heat-treated so as to
• composite filament is manufactured by conjugated-spinning two
• thermoplastic polymers in side by side type and then drawing and heat-treating the composite filament spun by a
• composite filament can be manufactured by a spin-direct draw
• filament can be manufactured by conjugated-spinning two kinds of
• thermoplastic polymers in side by side type to prepare an undrawn
• thermoplastic polymers having a number average molecular
• thermoplastic polymers include
• the polyethylene terephthalate is produced by an ester
• a number (n) of chains of polyethylene terephthalte can be adjusted, a number (n) of chains of polyethylene terephthalte.
• the number average molecular weight is a value measured by
• the side-by-side type composite filament has such a shape
• thermoplastic polymers that two kinds of thermoplastic polymers are bonded each other
• cross section is a circular type, a rectangular type, a cocoon
• the shape of the cross section is freely changeable according
• the interface has a linear shape or a bow-like
• polymers Generally, a polymer having a low melt viscosity
• the present invention is characterized in that
• the finally manufactured composite filament is drawn and heat-treated so as to satisfy the following physical properties:
• the composite filament is drawn and
• knitted fabrics may be degraded.
• thermal stress is smaller than 140°C or the temperature area (Tmax,
• the synthetic fiber filament has almost no crimp, the possibility
• synthetic fiber yarn (false-twisted yarn) is 90 to 99% of the boiling water shrinkage (Sri) measured under the condition of
• filament of this invention is similar to a textured yarn
• the boiling water shrinkage (Sri) was measured by the method
• a hank was prepared by winding a composite filament
• the retention time is the time taken until the sample
• component molecules enter the columns and melt out.
• polystyrene of polystyrene
• the breadth of the molecular weight distribution is the width of the peak value of the molecular weight distribution and represents the dispersity (Mw/Mn) of a target polymer material.
• Fig. 1 is a schematic view of a process for manufacturing
• Fig. 2 is schematic view of a process for manufacturing a
• Fig. 3 is a thermal stress curve of the composite filament
• Fig. 4 is a micrograph showing the cross sectional state
• Fig. 5 is a micrograph showing the state of the side-by-side
• Fig. 6 is a micrograph showing the state of the side-by-side
• Tmax temperature exhibiting maximum thermal stress
• T ⁇ lower limit value of temperature area exhibiting 95% of maximum thermal stress
• T ⁇ upper limit value of temperature area exhibiting 95% of maximum thermal stress
• Mn molecular weight
• Mn number average molecular weight
• the resulting material is drawn and heat-treated at a draw speed of 650m/min and at a drawn ratio of 1.68 in a drawing and heat treatment process as shown in Fig. 2,
• hot plate temperature is set to 132°C so that the composite filament can satisfy the following physical properties .
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 155°C Temperature area exhibiting 95% of maximum thermal stress
• Mn molecular weight
• the resulting material is drawn and heat-treated at a draw speed of 650m/min and at a drawn ratio of
• thermo plate temperature is set to 140°C so that the composite filament can satisfy the following physical properties.
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 165°C Temperature area exhibiting 95% of maximum thermal stress
• Mn molecular weight of 16,000 and a polyethylene terephthalate with a number average molecular weight (Mn) of 28,000 are
• the temperature of a first Godet roller is set to 82°C and the speed thereof is set to l,800m/min.
• the speed of a second Godet roller is set to 82°C and the speed thereof is set to l,800m/min.
• Godet roller is set to 4,815m/min, the speed of a take-up roller
• roller is set to 163°C, so that the conjugate filament can satisfy the following physical properties.
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 175°C Temperature area exhibiting 95% of maximum thermal stress
• Comparative Example 1 A polyethylene terephthalate with a number average molecular weight (Mn) of 21,000 and a polyethylene terephthalate
• the resulting material is drawn and heat-treated at a draw speed of 650m/min and at a drawn ratio of
• thermo plate temperature is set to 118°C so that the composite -filament can satisfy the following physical properties.
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 135°C Temperature area exhibiting 95% of maximum thermal stress
• Mn molecular weight of 20,000 and a polyethylene terephthalate
• the resulting material is drawn and heat-treated at a draw speed of 650m/min and at a drawn ratio of
• thermo plate temperature is set to 115°C so that the conjugate filament can satisfy the following physical properties.
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 130°C Temperature area exhibiting 95% of maximum thermal stress
• Mn molecular weight of 25,000 and a polyethylene terephthalate
• the resulting material is drawn and heat-treated at a draw speed of 650m/min and at a drawn ratio of
• the temperature of a hot roll is set to 85°C and the drawing and heat-treatment temperature (hot plate
• Tmax Temperature exhibiting maximum thermal stress (Tmax) : 155°C Temperature area exhibiting 95% of maximum thermal stress
• the side-by-side type .conjugate filament of this invention is superior in crimp property, exhibits the same properties as natural fibers and is easy to carry out a dyeing process. Further,
• the present invention reduces the manufacturing cost due to a simple manufacturing process and enables the composite filament to have a fine denier.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Multicomponent Fibers (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Woven Fabrics (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=36113871

Family Applications (1)

Country Status (8)

Families Citing this family (16)

Family Cites Families (9)

• 2003
  • 2003-11-20 KR KR1020030082432A patent/KR100667624B1/ko not_active Expired - Fee Related
  • 2003-11-21 WO PCT/KR2003/002522 patent/WO2004048650A1/en not_active Ceased
  • 2003-11-21 CN CNA2003801042887A patent/CN1717510A/zh active Pending
  • 2003-11-21 EP EP03774281A patent/EP1565601A4/de not_active Withdrawn
  • 2003-11-21 JP JP2004555103A patent/JP2006507421A/ja active Pending
  • 2003-11-21 US US10/535,205 patent/US20060051575A1/en not_active Abandoned
  • 2003-11-21 AU AU2003284739A patent/AU2003284739A1/en not_active Abandoned
  • 2003-11-25 TW TW092133097A patent/TWI259853B/zh not_active IP Right Cessation

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