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WO2008038536A1 - Longue fibre composite du type fendu, tissu non tissé fait de longues fibres composites du type fendu, et tissu non tissé à fibres fendues - Google Patents

Longue fibre composite du type fendu, tissu non tissé fait de longues fibres composites du type fendu, et tissu non tissé à fibres fendues Download PDF

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Publication number
WO2008038536A1
WO2008038536A1 PCT/JP2007/068042 JP2007068042W WO2008038536A1 WO 2008038536 A1 WO2008038536 A1 WO 2008038536A1 JP 2007068042 W JP2007068042 W JP 2007068042W WO 2008038536 A1 WO2008038536 A1 WO 2008038536A1
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WO
WIPO (PCT)
Prior art keywords
split
fiber
nonwoven fabric
type composite
density polyethylene
Prior art date
Application number
PCT/JP2007/068042
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English (en)
Japanese (ja)
Inventor
Akio Matsubara
Shigeyuki Motomura
Chureerat Prahsarn
Original Assignee
Mitsui Chemicals, Inc.
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
Application filed by Mitsui Chemicals, Inc. filed Critical Mitsui Chemicals, Inc.
Priority to JP2008536332A priority Critical patent/JP5334583B2/ja
Publication of WO2008038536A1 publication Critical patent/WO2008038536A1/fr

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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
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • 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
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/32—Side-by-side structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the present invention relates to a split composite long fiber excellent in splitting ability, which is an polyolefin polymer suitable for sanitary materials, filters, wipers, battery separators, and the like, a non-woven fabric having split composite long fiber strength, and a split fiber non-woven fabric. .
  • Nonwoven fabrics made of ultrafine fibers are excellent in flexibility, texture, etc., and are widely used as materials for clothing, usage !, sanitary goods, sanitary goods, wiping cloths, and the like. In recent years, it is expected to be used in clean rooms because of its excellent wiping performance.
  • a multicomponent polymer is combined and spun into a split composite fiber, and the resulting split composite fiber is applied to physical stress and resin chemicals.
  • a method of obtaining ultrafine fibers by dividing into a large number of fibers using a difference in shrinkage or the like is used.
  • polymers used for split type composite fibers are easily peelable, that is, incompatible polyesters and polyolefins, polyesters and polyamides, polyamides and polyolefins, etc. are used! / RU
  • Patent Document 1 JP 2000-328348 A
  • Patent Document 2 Japanese Patent Laid-Open No. 2002-220740 [0005]
  • a special nozzle or multi-stage drawing is required to improve the splitting property, and while the spun composite long fiber is cooled by the cooling fluid, the tension is applied to the long fiber with the fluid.
  • the thinning method has not yielded a non-woven fabric composed of split-type composite continuous fibers having excellent splitting properties.
  • (A) a propylene-based polymer has a load of 2160 g. It has been found that (B) high-pressure low-density polyethylene can be used to improve the resolution by (A) a propylene polymer having an MFR at 230 ° C of 40 g / 10 min or more, and an ethylene polymer. It was.
  • the present invention uses (A) a propylene polymer having a load of 2160 g and an MFR at 230 ° C of 40 g / 10 min or more and (B) a high-pressure low-density polyethylene, and (A) a propylene polymer.
  • the present invention also provides a spinneret having a composite spinning nozzle comprising (A) a propylene-based polymer having a load of 2160 g and an MFR force of Og / 10 min at 230 ° C of 10 minutes or more and (B) a high-pressure low-density polyethylene.
  • the composite filaments that are spun and spun from (A) the propylene polymer part and (B) the high-pressure method low-density polyethylene part are cooled by the cooling fluid, and the tension is applied to the filaments by the fluid.
  • (A) Propylene polymer part is oriented and crystallized, and then collected and deposited on a collection belt to produce a non-woven fabric with split composite long fiber strength. The method and the manufacturing method of a split fiber nonwoven fabric are provided.
  • the split-type long fibers of the present invention are excellent in splitting properties, and the resulting nonwoven fabric is made of an olefin polymer, so that it is lightweight and has excellent water resistance and flexibility.
  • FIG. 1 is a schematic view showing an example of a cross section of a composite long fiber according to the present invention.
  • the propylene-based polymer (A) relating to the split-type composite long fiber of the present invention has a melt flow rate (MFR; ASTM D-1238 load; 2160 gf, temperature; 230 ° C), MFR force 0 g / 10 min or more, Preferably in the range of 50-500 g / 10 min, more preferably 55-; lOOg / 10 min
  • the ratio Mw / Mn of the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the poly (A) propylene polymer is usually 1.5 to less than 5.0, and the spinnability is good. Further, 1.5 to 3.5 is preferable in that a composite fiber having particularly excellent fiber strength can be obtained.
  • good spinnability means that yarn breakage does not occur during discharging from the spinning nozzle and during drawing, and filament fusion does not occur. If Mw / Mn is 5.0 or more, there is a large amount of high molecular weight, and yarn breakage is likely to occur.If Mw / Mn is 1.5 or less, filament fusion occurs due to crystallization delay during drawing. There is a problem that it is easy.
  • Mw and Mn are measured by a known method using GPC (gel permeation chromatography).
  • the propylene-based polymer (A) is a homopolymer of propylene or propylene and a small amount of ethylene, 1-butene, 1-hexene, 4-methynole 1-pentene, 1-octene, Examples thereof include copolymers with ⁇ -olefin having 2 to 10 carbon atoms such as 1-decene.
  • propylene-based polymer is preferably a polymer having a melting point (Tm) of 155 ° C or higher, more preferably 160 ° C or higher.
  • the (A) propylene-based polymer according to the present invention includes an antioxidant, a weather resistance stabilizer, a light resistance stabilizer, an antistatic agent, an antifogging agent, and the like, as long as the object of the present invention is not impaired.
  • Professional Use force S to add additives such as anti-ocking agents, lubricants, nucleating agents, pigments, or other polymers as necessary.
  • the (B) high-pressure method low-density polyethylene relating to the split-type composite continuous fiber of the present invention is a so-called polymer obtained by radical polymerization of ethylene under high pressure, and is an ethylene homopolymer or ethylene. It is a copolymer with a small amount of butyl acetate.
  • the (B) high-pressure process low-density polyethylene is an ethylene obtained by copolymerizing ethylene and ⁇ -olefin having 3 to 10 carbon atoms under low pressure using a Ziegler catalyst, a meta-mouth catalyst, or the like.
  • LLDPE linear low density polyethylene
  • Ziegler catalyst low pressure 10-20 kg m 2
  • Philips catalyst medium pressure 30-; 100 kg m 2
  • HDPE high-density polyethylene
  • melt flow rate (MFR; ASTM D-1238 load; 2160gf, temperature; 190 ° C) of the (B) high-pressure low-density polyethylene according to the present invention is not particularly limited as long as it can be melt-spun. ! ⁇ LOOOg / 10 min, preferred ⁇ (between 10 and 500 g / 10 min, more preferred ⁇ (between 20 and; lOOg / 10 min.).
  • the melting point (Tm) of the (B) high-pressure method low-density polyethylene according to the present invention is preferably 90 to 110.
  • C more preferably (between 95 and 110; in the range of C, density is preferably (between 0.9.900-0. 935 g / cm 3 , more preferred (between 0.9.905—0. 925 g / cm 3 range) There is.
  • the (iii) high-pressure low-density polyethylene according to the present invention includes an antioxidant, a weather-resistant stabilizer, a light-resistant stabilizer, an anti-static agent, an anti-fogging agent, and the like as long as the object of the present invention is not impaired.
  • the split-type composite long fiber of the present invention comprises the above (ii) propylene polymer and the above (ii) high pressure method low density polyethylene, and (ii) a propylene polymer portion and (iii) a high pressure method low density polyethylene. It is a split-type composite continuous fiber that is in contact with each other.
  • the shape (cross section) of the split-type composite continuous fiber is not particularly limited as long as (A) the propylene polymer portion and (B) the high-pressure method low-density polyethylene portion are in contact with each other. a) to l (e)], etc., but from the viewpoint of ensuring good spinnability, the distance from the center is equal! /, a curve consisting of a set of points.
  • the shape of a so-called perfect circle (Fig. 1 (a) and (b) is preferred.
  • the split-type composite long fibers of the present invention have the same orientation pattern and a degree of orientation of at least 0.80, preferably at least 0.82 propylene polymer part and ethylene polymer part.
  • the orientation mode indicates a tendency in which direction the structural elements in the molecular chain are selectively oriented with respect to the fiber axis as a whole.
  • a high degree of c-axis orientation means that the crystal lattice has a high degree of orientation.
  • the c-axis is selectively oriented in the fiber axis direction, indicating a high ratio.
  • the orientation mode is the same and the degree of orientation is higher because both components are crystallized at the same time or because the splitting property is excellent! /.
  • the split composite long fibers of the present invention preferably have an orientation degree of the main orientation mode of the ethylene polymer of at least 0.70, more preferably 0.75 or more.
  • the orientation degree of the present invention is determined by using a wide-angle X-ray diffractometer (RINT2550, manufactured by Rigaku Corporation, attached device: fiber sample table, X-ray source: CuKa, output: 40 kV 370 mA, detector: scintillation counter) Are aligned in the fiber axis direction and fixed to the sample holder, and the orientation obtained by measuring the azimuth distribution strength of the crystal plane peak [polypropylene polymer: (110) plane, polyethylene polymer: (200) plane].
  • the degree of orientation in the fiber axis direction is calculated from the half-value width ( ⁇ ) of the peak according to the following formula and evaluated.
  • the fineness of the split-type composite continuous fiber of the present invention is usually preferably 6 denier or less. If it is 6 denier or less, the fineness after splitting treatment can be reduced, and it is excellent in wiping property and flexibility. Further, the number of divisions of the (A) propylene polymer part and the ethylene polymer part forming the split-type composite long fiber is not particularly limited as long as it does not impair the splittability, but usually 4 to 48 splits.
  • the fineness of the split-type composite long fiber and the splitting of the composite fiber is set to 0.00;! To 2.00 Denier, preferably in the range of 0.001 -0.5 denier.
  • the nonwoven fabric composed of the split-type composite long fibers of the present invention is made of the split-type composite long fibers, and usually has a basis weight of 200 g / m 2 , preferably 10 to 150 g / m 2 .
  • the nonwoven fabric of this invention is heat-seal
  • the area (embossed area ratio) in the case of heat-sealing can be appropriately selected depending on the application, but is preferably 5 to 30%.
  • the split fiber non-woven fabric of the present invention forms a composite fiber by applying stress to the non-woven fabric composed of the split-type composite long fibers.
  • a propylene-based polymer portion and (B) a high-pressure method low-density polyethylene portion are split.
  • the basis weight is usually 3 to 200 g / m 2 , preferably 10 to 150 g / m 2 .
  • the fineness of the split fibers forming the split fiber nonwoven fabric of the present invention is usually in the range of 0.00;! To 2.0 denier, preferably 0.001 to 0.5 denier.
  • Examples of stress applied to the nonwoven fabric composed of split-type composite long fibers include various known methods such as a method of applying a liquid such as water at a high pressure, a so-called high-pressure water flow method (water jet method), and a gear stretcher.
  • a high-pressure water flow is applied to a nonwoven fabric composed of split-type composite continuous fibers that are deposited, in order to promote entanglement and the like, for example, before the split splitting and entanglement application step by high-pressure liquid flow, It is preferable to replace the air present between the constituent single yarns of the nonwoven fabric with water. Specifically, water may be added to the web.
  • the high-pressure liquid flow can be obtained by injecting the liquid through a nozzle hole and increasing the pressure with a high-pressure pump.
  • the hole diameter is usually 0.05 to 1. Omm, and more preferably in the range of 0.5;! To 0.5 mm.
  • the pressure of the high-pressure liquid stream is usually in the range of 5 to 400 MPa, preferably 50 to 300 MPa.
  • water or warm water is applied as the liquid for ease of handling, and it is preferable to use a known water quality measuring device with a specific resistance value of 10 ⁇ ⁇ 'cm or more, more preferably 15 ⁇ ⁇ 'cm or more. To do.
  • the distance between the nozzle hole and the nonwoven fabric is preferably about 1 to 15 cm. When this distance exceeds 15 cm, the energy that the liquid gives to the nonwoven fabric decreases, and splitting tends to reduce the effect of confounding. If it is less than 1 cm, the formation of the nonwoven fabric tends to be disturbed.
  • the nozzle holes of the high-pressure liquid flow are arranged in a row in a direction crossing the traveling direction of the nonwoven fabric.
  • the pressure of the high-pressure liquid stream is preferably low on the front side and high on the rear side in order to make the formation uniform.
  • the appearance pattern, V, and loose pattern of the split fiber nonwoven fabric according to the present invention can be changed by appropriately selecting the pattern of the screen belt used when processing the high-pressure liquid flow.
  • the split fiber nonwoven fabric subjected to split splitting treatment with a high-pressure liquid flow is then subjected to drying and heat treatment after the excess water is removed by mechanical squeezing into a final product.
  • the heat treatment temperature time can be selected not only to remove moisture but also to allow moderate shrinkage and promotion of crystallization.
  • the heat treatment may be dry heat treatment or wet heat treatment! /.
  • the non-woven fabric composed of the split-type composite long fibers and the split-type composite long fibers of the present invention is produced by a known melt-spun spinning method using (A) a propylene polymer and (B) a high-pressure low-density polyethylene. Force that can be obtained
  • the spunbond method is preferred because it provides a good productivity and good splitting ability.
  • FIGS. 1 (a) to 1 (e) Like, inside It is discharged from a spinneret having a composite spinning nozzle that has a hollow, radial, parallel or parallel IJ, or arc-shaped cross-sectional structure, and (A) a propylene-based polymer portion and (B) a high-pressure method. Spinning split type composite continuous fibers in which the low density polyethylene parts are in contact with each other.
  • the spun split composite long fibers are cooled with a cooling fluid, and further, tension is applied to the long fibers with drawn air to obtain a predetermined fineness, and the fibers are collected as they are and collected to a predetermined thickness. .
  • heat embossing is performed as necessary by heat fusion using a hot embossing roll.
  • the embossing area ratio of the embossing roll is a force that can be appropriately determined. Usually, 5 to 30% is preferable.
  • the method for producing a split fiber nonwoven fabric of the present invention comprises: (A) a propylene-based polymer part and (B) a high-pressure process low-density polyethylene part by using the above-mentioned various known methods for a nonwoven fabric comprising split-type composite long fibers. Divide.
  • the obtained split fiber non-woven fabric is embedded in an epoxy resin and cut with a microtome at the next step to obtain a sample piece.
  • the split ratio is 100%.
  • the split ratio was calculated by the following formula. This was observed for 50 fibers, and the average value was taken as the split ratio of the split fiber nonwoven fabric.
  • Splitting rate [%] (Total number of segments-Number of segments of the split fiber cross section observed) / Total number of segments XI 00
  • the total number of segments refers to the total number of segments forming the filament cross section of the split composite fiber.
  • the total segment is 8.
  • the obtained split fiber non-woven fabric is embedded in an epoxy resin and cut with a microtome in the next step to obtain a sample piece.
  • observe with an electron microscope S-3500N scanning electron microscope manufactured by Hitachi, Ltd.
  • select 30 undivided filaments from the obtained cross-sectional image calculate the cross-sectional area, and calculate the average value thereof.
  • the fineness of the undivided filament was obtained, and the fineness of the divided fiber was calculated by the following formula using the division ratio.
  • Fineness of the split fibers undivided filament fineness / (total number of segments X split ratio / 100)
  • the touch is evaluated by 10 evaluators, and the evaluation results are shown according to the following criteria.
  • X 2 or less of 10 people who feel comfortable to touch.
  • JIS Z 8703 standard condition of test place temperature 20 ⁇ 2 ° C, humidity 65 ⁇ 2% in a constant temperature room 20mm X 150mm Take 5 specimens in the flow direction (MD) and transverse direction (CD) respectively, and place the short side of the specimen on a smooth horizontal surface with a 45 ° slope with the scale base line aligned. Next, manually slide the specimen in the direction of the slope, and when the center point of one end of the specimen touches the slope, read the moving length of the other end on the scale.
  • MD flow direction
  • CD transverse direction
  • Bending / softening is indicated by the length (mm) of the specimen moved, measured for each of the five front and back sides, and expressed as the average value in the flow direction (MD) and the transverse direction (CD).
  • MD flow direction
  • CD transverse direction
  • Tensile strength of 25cm in the flow direction (MD) and 2.5cm in the transverse direction (CD) were collected as the tensile strength of the fabric, and the tensile strength in the transverse direction (CD) was 2.5 in the flow direction (MD).
  • Three non-woven test specimens of 25 cm in the transverse direction (CD) were collected and used a tensile tester (Instron Model 5564 manufactured by Instron Japan Ltd.) under the conditions of 200 mm between chucks and 200 mm / min. Tensile tests were performed, and the tensile load was measured on the three test pieces, and the average of the maximum values was taken as the tensile strength.
  • A Propylene polymer part with a load of 2160g, MFR at 230 ° C of 60g / 10min
  • A Propylene polymer (density 0 ⁇ 910g / cm 3 , melting point 157 ° C, Mw / Mn2.75)
  • B High-pressure low-density polyethylene as a high-pressure low-density polyethylene part 2160 g, 190 ° C MFR 20 g / 10 min
  • B High-pressure low-density polyethylene (density 0.919 g / cm 3 ) Melting was performed at a temperature of 210 ° C.
  • the weight ratio of (A) propylene polymer part and (B) high-pressure low-density polyethylene part is 50.
  • split-type composite continuous fibers were spun by a so-called spunbond method at a yarn speed of 2500 m / min and deposited on a collection belt.
  • the fiber In order to divide the fibers, a nozzle with a hole diameter of 0.11 mm is used, the distance from the nozzle to the nonwoven fabric is 10 cm, the first stage water pressure is 60 kgf / cm 2 and the second stage water pressure is 100 kgf / cm at a line speed of 5 m / min. 2 , the water pressure of the third stage is 100 kgf / cm 2 and the water pressure of the fourth stage is 100 kgf / cm 2.
  • An m 2 split fiber nonwoven fabric was prepared. The obtained nonwoven fabric was evaluated by measuring the division ratio, fineness, bending resistance, and tensile strength. The results are shown in Table 1.
  • A Propylene polymer part with a load of 2160g, MFR at 230 ° C of 60g / 10min
  • A Propylene polymer (density 0 ⁇ 910g / cm 3 , melting point 157 ° C, Mw / Mn2.75)
  • B High-pressure method low-density polyethylene part
  • B High-pressure method low-density polyethylene (density 0.916 g / cm 3 ) with a load of 2160 g and 190 ° C MFR of 35 g / 10 min.
  • Extruder Melts at a molding temperature of 210 ° C, and uses a split type composite fiber spinning die with a total number of segments of 16 in the cross-sectional shape as shown in Fig. 1 (a).
  • (B ) Split type composite continuous fiber with 50/50 weight ratio of high-pressure low-density polyethylene part is spun by the so-called spunbond method at a yarn speed of 2500 m / min, deposited on a collecting belt, and then the fiber Use a nozzle with a hole diameter of ⁇ 0.11 mm to divide the distance from the nozzle to the nonwoven fabric to 10 cm, and the first stage water at a line speed of 5 m / min.
  • A Propylene polymer part with a load of 2160 g, 230 ° C MFR of 60 g / 10 min
  • A Propylene polymer (density 0 ⁇ 910 g / cm 3 , melting point 161.7 ° C, Mw / Mn3
  • B High-pressure low-density polyethylene part
  • B High-pressure method low-density polyethylene part 2160g, 190 ° C MFR 35g / 10 min
  • B High-pressure method low-density polyethylene (density 0.916g / cm 3 )
  • A Propylene-based polymer part melted at 210 ° C, using a split composite fiber spinning die with a total number of segments of 16 in the cross-sectional shape shown in Fig.
  • high-density polyethylene (density: 972 g / cm 3 ) with a load of 2160 g and 190 ° C MFR of 16 g / 10 min as a high-density polyethylene part, melt at a separate extruder molding temperature of 240 ° C.
  • the weight ratio of the propylene-based polymer part to the high-density polyethylene part is 50/50.
  • A Propylene polymer part, load 2160g, 230 ° C MFR 30g / 10min
  • A propylene polymer [density 0.910g / cm 3 , melting point 165.4 ° C, Mw / Mn6. 79) as a high-density polyethylene part, high-density polyethylene (density: 972 g / cm 3 ) with a load of 2160 g and 190 ° C MFR of 16 g / 10 min, and a separate extruder molding temperature of 240 ° C.
  • the weight ratio of the propylene-based polymer part to the high-density polyethylene part is 50 //, using a split composite fiber spinning die having a total number of segments of 16 in the cross-sectional shape as shown in Fig. 1 (a). 50 split-type composite long fibers were spun by a so-called spunbond method at a yarn speed of 2500 m / min, deposited on a collection belt, and then a nozzle with a hole diameter of 0.11 mm was used to divide the fibers.
  • the distance from the nozzle to the nonwoven fabric is 10 cm
  • the first stage water pressure is 60 kgf / cm 2 at the line speed of 5 m / min
  • the second stage water pressure is 100 kgf / cm 2
  • the third stage water pressure is 100 kgf / cm 2
  • 4 A split fiber nonwoven fabric with a basis weight of 50 g / m 2 was produced by applying water jet processing four times each on the front and back surfaces of the nonwoven fabric at a water pressure of 100 kgf / cm 2 at the stage.
  • the obtained non-woven fabric was evaluated by measuring the division ratio, fineness, softness and tensile strength. The results are shown in Table 1.
  • A Propylene polymer part with a load of 2160g, MFR at 230 ° C of 13g / 10min
  • A Propylene polymer (density 0.910g / cm 3 , melting point 165.4 ° C, Mw / MnlO 97), high-density polyethylene with a load of 2160 g, 190 ° C MFR of 16 g / 10 min high-density polyethylene (density 0.972 g / cm 3 ), and a separate extruder molding temperature of 240 ° C.
  • the weight ratio of the propylene-based polymer part to the high-density polyethylene part is 50, using a split-type composite fiber spinning die having a total number of segments of 16 in the cross-sectional shape as shown in Fig. 1 (a). / 50 split-type composite long fibers are spun by a so-called spunbond method at a yarn speed of 2500 m / min, deposited on a collection belt, and then a nozzle with a hole diameter of 0.11 mm is used to split the fibers The distance from the nozzle to the nonwoven fabric is 10 cm, the first stage water pressure is 60 kgf / cm 2 at the line speed of 5 m / min, and the second stage water pressure is 100 kgf.
  • A Propylene polymer part with a load of 2160 g, 230 ° C MFR of 30 g / 10 min
  • A Propylene polymer (density 0 ⁇ 910 g / cm 3 , melting point 157 ° C, Mw / Mn2.80)
  • B High pressure method low density polyethylene (density 0.919 g / cm 3 ) was used as the high pressure method low density polyethylene part with a load of 2160 g and 190 ° C MFR of 20 g / 10 min.
  • a split type composite continuous fiber having a weight ratio of 50/50 is spun by a so-called spunbond method at a yarn speed of 2500 m / min, deposited on a collecting belt, and then the pore diameter ⁇ is used to split the fiber.
  • a split type composite continuous fiber having a quantity ratio of 50/50 is spun by a so-called span bond method at a yarn speed of 2500 m / min, deposited on a collection belt, and then has a pore diameter of 0.11 mm for fiber splitting.
  • Comparative Example 6 (A) Propylene polymer part with a load of 2160 g, 230 ° C MFR of 60 g / 10 min (A) Propylene polymer (density 0.910 g / cm 3 , melting point 157 ° C, Mw / Mn 2.75) As the polyethylene part, linear low-density polyethylene (density: 915 g / cm 3 ) with a load of 2160 g and 190 ° C MFR of 15 g / 10 min was used.
  • the distance from the nozzle to the nonwoven fabric is 10 cm
  • the first stage water pressure is 60 kgf / cm 2 at the line speed of 5 m / min
  • the second stage With a water pressure of 100 kgf / cm 2 , a third-stage water pressure of 100 kgf / cm 2 , and a fourth-stage water pressure of 100 kgf / cm 2 , four times each on the front and back surfaces of the nonwoven fabric, a total of 8 times of water jet processing, and the basis weight is
  • a 50 g / m 2 split fiber nonwoven fabric was prepared.
  • the obtained non-woven fabric was evaluated by measuring the division ratio, fineness, stiffness and tensile strength. The results are shown in Table 1.
  • the weight ratio of the propylene polymer part to the high density polyethylene part was 50/50.
  • the distance from the nozzle to the non-woven fabric is 10 cm, the first stage water pressure is 60 kgf / cm 2 and the second stage water pressure is 100 kgf / cm at a line speed of 5 m / min.
  • the water pressure of the third stage is 10 Okgf / cm 2
  • the water pressure of the fourth stage is 100 kgf / cm 2
  • the basis weight is 50g / m
  • Two split fiber nonwoven fabrics were prepared. About the obtained nonwoven fabric, the division ratio, the fineness, the bending resistance, and the tensile strength were measured and evaluated. The results are shown in Table 1.
  • the composite long fiber nonwoven fabrics using the polypropylene and polyethylene of Example 1, Example 2, and Example 3 can be easily divided into 80% or more, and thus obtained.
  • the fineness of the resulting split fiber is also thin, and it is extremely excellent in flexibility and texture!
  • the split-type composite fiber nonwoven fabric obtained by the method for producing a split fiber nonwoven fabric of the present invention is extremely excellent in flexibility and texture, and various wiping cloths, surgical garments, medical gowns, and industrial gowns. It can also be widely used for non-woven fabrics for clothing, packaging fabrics, surface materials for sanitary materials such as disposable ommu and napkins, bedding such as bed sheets and pillow covers, carpets and base fabrics for artificial leather.
  • VTR and compact 'disk cleaning cloth include, for example, VTR and compact 'disk cleaning cloth, disk polishing, filter cloth, filter, battery separator, general consumer materials such as glass, precious metal, high-quality furniture, window glass, OA equipment, Examples include automobile windows, musical instruments, mirrors, dirt removal, oil flooring, flooring, and toilet cleaners.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Multicomponent Fibers (AREA)

Abstract

L'invention concerne une fibre composite de type fendu qui comprend un polymère de propylène et un polymère d'éthylène, et qui présente une meilleure adaptabilité à la séparation. La longue fibre composite du type fendu est constituée d'un polymère de propylène ayant une MFR, mesurée à 230 °C sous une charge de 2,160 g à 40 g/10 minimum ou plus, et d'un polyéthylène de basse densité traité haute pression, la partie de polymère de propylène et la partie de polyéthylène de basse densité traité haute pression étant en contact l'une avec l'autre. L'invention concerne également : un tissu non tissé comprenant des fibres qui sont chacune de longues fibres composites du type fendu; un tissu non tissé à fibres fendues obtenues par soumission du tissu non tissé à une séparation de fibres; et un procédé de production du tissu non tissé à fibres fendues.
PCT/JP2007/068042 2006-09-25 2007-09-18 Longue fibre composite du type fendu, tissu non tissé fait de longues fibres composites du type fendu, et tissu non tissé à fibres fendues WO2008038536A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008536332A JP5334583B2 (ja) 2006-09-25 2007-09-18 分割型複合長繊維、分割型複合長繊維からなる不織布および分割繊維不織布

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-259365 2006-09-25
JP2006259365 2006-09-25

Publications (1)

Publication Number Publication Date
WO2008038536A1 true WO2008038536A1 (fr) 2008-04-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/068042 WO2008038536A1 (fr) 2006-09-25 2007-09-18 Longue fibre composite du type fendu, tissu non tissé fait de longues fibres composites du type fendu, et tissu non tissé à fibres fendues

Country Status (3)

Country Link
JP (1) JP5334583B2 (fr)
TW (1) TW200825225A (fr)
WO (1) WO2008038536A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758263A (zh) * 2011-04-29 2012-10-31 顾海云 桔瓣型复合纤维的制造方法
TWI572754B (zh) * 2014-06-27 2017-03-01 三洋紡織纖維股份有限公司 人造皮革織物之製法
JP2017222972A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 複合繊維
JP2017222970A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 不織布および吸収性物品
JP2022001688A (ja) * 2020-06-19 2022-01-06 花王株式会社 繊維シート、電界紡糸装置及び繊維シートの製造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014002232B4 (de) * 2014-02-21 2019-10-02 Carl Freudenberg Kg Mikrofaser-Verbundvliesstoff

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328348A (ja) * 1999-03-17 2000-11-28 Chisso Corp 分割型複合繊維及びこれを用いた繊維成形体
JP2002088580A (ja) * 2000-09-14 2002-03-27 Chisso Corp 分割繊維及びこれを用いた繊維成形体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3852644B2 (ja) * 1998-09-21 2006-12-06 チッソ株式会社 分割型複合繊維、これを用いた不織布及び吸収性物品
JP3318833B2 (ja) * 1999-03-11 2002-08-26 チッソ株式会社 分割型複合繊維及びこれを用いた繊維成形品

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328348A (ja) * 1999-03-17 2000-11-28 Chisso Corp 分割型複合繊維及びこれを用いた繊維成形体
JP2002088580A (ja) * 2000-09-14 2002-03-27 Chisso Corp 分割繊維及びこれを用いた繊維成形体

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102758263A (zh) * 2011-04-29 2012-10-31 顾海云 桔瓣型复合纤维的制造方法
TWI572754B (zh) * 2014-06-27 2017-03-01 三洋紡織纖維股份有限公司 人造皮革織物之製法
JP2017222972A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 複合繊維
JP2017222970A (ja) * 2016-06-14 2017-12-21 王子ホールディングス株式会社 不織布および吸収性物品
JP2022001688A (ja) * 2020-06-19 2022-01-06 花王株式会社 繊維シート、電界紡糸装置及び繊維シートの製造方法

Also Published As

Publication number Publication date
JPWO2008038536A1 (ja) 2010-01-28
JP5334583B2 (ja) 2013-11-06
TW200825225A (en) 2008-06-16

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