WO2002014590A1 - Tissu de base non enduit et fibre pour airbag - Google Patents

Tissu de base non enduit et fibre pour airbag Download PDF

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Publication number
WO2002014590A1
WO2002014590A1 PCT/JP2001/007064 JP0107064W WO0214590A1 WO 2002014590 A1 WO2002014590 A1 WO 2002014590A1 JP 0107064 W JP0107064 W JP 0107064W WO 0214590 A1 WO0214590 A1 WO 0214590A1
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WO
WIPO (PCT)
Prior art keywords
base fabric
airbag
fiber
less
coated
Prior art date
Application number
PCT/JP2001/007064
Other languages
English (en)
Japanese (ja)
Inventor
Tomotaka Koketsu
Isoo Saito
Tomomichi Fujiyama
Taiichi Okada
Original Assignee
Toray Industries, 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
Priority claimed from JP2001028886A external-priority patent/JP4538967B2/ja
Priority claimed from JP2001102354A external-priority patent/JP2002293209A/ja
Application filed by Toray Industries, Inc. filed Critical Toray Industries, Inc.
Priority to DE60138761T priority Critical patent/DE60138761D1/de
Priority to CA 2384790 priority patent/CA2384790A1/fr
Priority to EP01956923A priority patent/EP1316633B1/fr
Priority to CNB018024483A priority patent/CN1318668C/zh
Publication of WO2002014590A1 publication Critical patent/WO2002014590A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D03D1/02—Inflatable articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
    • 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
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
    • D03D15/46—Flat yarns, e.g. tapes or films
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/12—Vehicles
    • D10B2505/124—Air bags
    • 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
    • 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
    • Y10T428/2973—Particular cross section
    • 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
    • Y10T428/2973—Particular cross section
    • Y10T428/2978—Surface characteristic
    • 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
    • Y10T428/298—Physical dimension
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • Y10T442/3089—Cross-sectional configuration of strand material is specified
    • Y10T442/3114—Cross-sectional configuration of the strand material is other than circular

Definitions

  • the present invention relates to a base fabric for a non-coated airbag and a fiber for an airbag. More specifically, the base cloth for non-coated airbags for high-pressure deployment and the airbags with excellent storage capacity while maintaining the strength and low air permeability required for an airbag.
  • the present invention relates to a fiber for an airbag which provides a base fabric for a bag.
  • the requirements for the safety bag include low air permeability for smooth deployment in the event of a collision, high strength to prevent damage and rupture of the back itself, and flexibility for preventing the occupant from having a facial scratch when deployed. Can be In recent years, it has become an important requirement to improve the foldability and storability of the airbag base fabric itself, as well as to reduce costs.
  • the form of the airbag can be broadly classified into a so-called coat base cloth in which a resin is applied to the surface of the base cloth after weaving, and a non-coated base cloth in which the base cloth after weaving is used as it is.
  • a coated base fabric is generally advantageous.
  • Japanese Patent Application Laid-Open No. 114438/1996 discloses that an airbag base fabric composed of a yarn composed of fibers having a strength of 8.5 g / d or more and a single-fiber fineness of 3 denier or less is used. It is said that the above object is achieved by the above.
  • this publication does not mention any distinction between a coated substrate and a non-coated substrate, it is essentially a so-called coated substrate obtained by applying an elastomer such as chloroprene rubber to the surface of the substrate. This also relates to fabrics, and when this technology was applied to non-coated base fabrics, although the strength and storage properties were certainly satisfied, they were not sufficiently satisfactory in terms of maintaining low air permeability.
  • Japanese Patent Application Laid-Open No. 4-210650 discloses that a plurality of single yarns having an irregular cross section having a single yarn fineness of 1.0 to 12 denier and a single yarn deformation of 1.5 to 7.0 are disclosed. There is disclosed a technique for obtaining a base fabric for an airbag excellent in strength and foldability by using a polyamide multifilament made of. However, this technology also satisfies the required characteristics as an airbag base fabric only when applied to a coated base fabric, but the non-coated base fabric has a problem in terms of air permeability, especially in the sewed part. Was what remained.
  • Japanese Patent No. 2950954 discloses a non-coated base fabric using a yarn having a total fineness of 300 to 400 dte X. It is hard to say that the seam deviation in the sewing is small enough.
  • Japanese Patent Application Laid-Open No. 8-23959 discloses that, for a base cloth having a background cover factor of 900 to 140, both the residual oil agent adhesion amount and the slip-off resistance of the base cloth are described.
  • the prescribed airbag base fabric is disclosed, it is hard to say that even in the patent publication, it is sufficient to satisfy the deviation of the sewing portion.
  • the present invention has been achieved as a result of studying solving the problems in the above-described conventional technology.
  • the object of the present invention is to have both excellent strength, low air permeability and storage capacity as an airbag, and low air permeability under high pressure as an airbag for high-pressure deployment, low air permeability of a sewing portion, and sewing.
  • An object of the present invention is to provide a base fabric for a non-coated airbag and a fiber for an airbag in which misalignment is improved. Disclosure of the invention
  • the base fabric for a non-coated airbag of the present invention mainly has the following configuration. That is,
  • Synthetic fiber multifilaments with a single yarn cross-sectional profile of 1.5 to 8.0, a single yarn fineness of 10 dtex or less, and a total fineness of 200 to 1 000 dtex are used for both or one of the warp and weft.
  • a base fabric for an uncoated airbag characterized by satisfying the following (1) to (3) simultaneously.
  • Air permeability under normal pressure is 0.1 cccm 2 / sec or less
  • Air permeability under high pressure is 20 c c / c mV sec or less
  • the following (a) to (e) are preferred embodiments, respectively, and by applying these conditions, it is possible to obtain a more excellent effect. Can be.
  • the horizontality index HI representing the angle between the long axis direction of the single yarn of the synthetic fiber multifilament and the horizontal direction of the base fabric as a cosine shall be 0.75 or more.
  • the residual entanglement of the warp removed from the base fabric shall be 10 yarns / m or less.
  • the residual oil content of the base fabric shall be 0.1% by weight or less.
  • the synthetic fiber multifilament is made of polyamide having a sulfuric acid relative viscosity of 3.0 or more.
  • the airbag fiber of the present invention mainly has the following configuration. That is, An airbag fiber comprising a synthetic fiber multifilament, characterized by simultaneously satisfying the following (4) to (7).
  • the surface flatness in the major axis direction expressed by the ratio c / b of the maximum minor axis length b to the minimum minor axis length c in the cross-sectional shape of the single yarn is 0.8 or more.
  • Maximum short axis length b is 15 m or less
  • the fiber for an airbag of the present invention can be expected to obtain a further excellent effect by applying the following conditions (f) and (g).
  • the synthetic fiber multifilament is a polyamide having a sulfuric acid relative viscosity of 3.0 or more.
  • FIG. 1 is a schematic view showing a cross section of a single yarn of a synthetic fiber multifilament constituting a base fabric for a non-coated airbag of the present invention.
  • FIG. 2 is a schematic view showing a method for producing a polyamide fiber for an airbag of the present invention.
  • FIG. 3 is a schematic view showing a shape of a nozzle discharge hole for obtaining a flat cross section fiber. Best mode for implementing
  • the total fineness of the synthetic fiber multifilament constituting the base fabric for a non-coated airbag of the present invention is essential to be 200 to 1000 dtex, more preferably 200 to 700 dtex.
  • the airbag base fabric composed of synthetic fiber multifilaments is satisfactory in terms of storability, but lacks the strength and is packaged during deployment and during occupant collision after deployment. However, it is not preferable because it may burst.
  • the total fineness exceeds 1000 dte X, the airbag
  • the airbag although sufficient strength is obtained and safety is satisfactory, it is not possible to maintain the excellent storability, which is one of the objects of the present invention.
  • the design of the airbag differs depending on the type and location of the vehicle to be mounted, and the total fineness of the synthetic fiber multifilament constituting the base fabric for the airbag is appropriately selected.
  • the airbags for the driver's seat and the passenger's seat can be composed of a synthetic fiber multifilament having a total fineness of 300 to 500 dtex.
  • the total fineness range is relatively narrow, such as inside the steering wheel in the driver's seat and inside the front dashboard in the passenger seat to withstand high inflation overnight output to restrain the occupant early in the event of a collision. It also has excellent storage properties for bags to be mounted in space.
  • the side airbags installed at both ends of the driver's seat and the passenger's seat are required to have high strength to withstand a high inflation overnight output setting to restrain the occupant early from the impact of a side collision.
  • the total fineness of the synthetic fiber multifilament constituting the base fabric for use is preferably 40 to 700 dtex.
  • the base fabric for inflation tablets is required to be mounted in a narrow space
  • the base fabric for c non- coated airbags having a total fineness of 200 to 500 dtex is preferable.
  • the single filament fineness of the synthetic multifilament filaments is 10 dtex or less, preferably 7 dtex or less, and more preferably 5 dte X or less.
  • the smaller the single fiber fineness is the more flexible and excellent the foldability of the obtained base fabric becomes, and the better the storability is.
  • the single yarn fineness is reduced and the covering property is improved, and as a result, the air permeability of the base fabric can be suppressed. If the single-fiber fineness exceeds 10 dtex, the folding and storage properties of the base fabric are deteriorated, and the air permeability is increased.
  • the oblateness represented by the ratio a / b of the maximum major axis length a to the maximum minor axis length b is required to be 1.5 to 8.0, and preferably 2.0. 0 to 6.0.
  • the long axis of each single yarn is arranged in the horizontal direction of the base fabric due to the general tension applied to the entire fiber during weaving. Will do.
  • the unit area of the base cloth The gap per unit area is reduced, and the air permeability of the base fabric can be kept low as compared with the case where a round fiber with the same fineness is used.
  • the required amount of the flat cross-section fiber is reduced.
  • the fibers having the flat cross section in the above range it is possible to obtain a base fabric for airbag having both low air permeability and storability.
  • the flattening ratio is less than 1.5, the difference from the ordinary round cross-section fiber is so small that the effect of using the flat cross-section fiber cannot be sufficiently exhibited.
  • the flattening ratio exceeds 8.0, the effect as a flat cross-section fiber is not only saturated, but also the high-strength fiber required for airbag fiber, specifically, a strength of 6.5 cN / dtex or more
  • the processability in the weaving process is significantly deteriorated.
  • the single yarn of the synthetic fiber multifilament constituting the base fabric has a flat cross-sectional shape, and its major axis extends in the horizontal direction of the base fabric.
  • the feature is to arrange.
  • the Horizontal Index (HI) was defined.
  • the horizontality index HI is represented by the average value of the cosine (h i) of the angle ( ⁇ ) between the long axis of the flat cross section of each single yarn constituting the base fabric and the horizontal direction of the base fabric. That is, it can be calculated by the following equation.
  • the horizontality index HI of the base fabric using the flat cross-section fiber of the present invention is preferably 0.75 or more, more preferably 0.85 or more, and still more preferably 0.90 or more.
  • the cover factor is from 170 to 220, and preferably from 180 to 210.
  • the governor factor is the total fineness of the warp as D l (dtex), the weaving density as N 1 (book Z2.54 cm), the total weft as fineness as D 2 (dtex), and the weaving density as N When 2 (present / 2. 5 4 cm), is a value represented by (D 1 X 0. 9) 1/2 X 1 + (D 2 X 0. 9) 1 2 XN 2.
  • the cover factor When the cover factor is less than 170, the mechanical properties of the non-coated airbag base fabric are reduced, and the air permeability (PH) particularly under high pressure is increased. In addition, sewing stitch misalignment is likely to occur, and it is not preferable because a sufficient function as a safety device cannot be maintained. Conversely, if the cover factor 1 exceeds 220, that is, if the weaving density increases, the storability deteriorates, which is not preferable. In addition, the increased fiber usage is disadvantageous in terms of cost.
  • the cover factor is greatly related to the air permeability and the storability of the base fabric, and it is important for the non-coated bag base fabric of the present invention that this characteristic is in an appropriate range as described above. .
  • the air permeability (P L ) under low pressure of the non-coated airbag fabric must be less than 0.1 cm 2 / sec, preferably less than 0.08 cc / cmV sec. is there. Further, the air permeability under pressure (P H ) needs to be 20 cc / cm 2 / sec or less, and is preferably 15 cc / cm 2 Z sec or less.
  • P L is the air permeability measured by the method specified in JISL 1096 (6.2.7.1 A method)
  • P H is a laminar flow tube with a circular section of 10 cm in diameter. This is the air permeability expressed as the flow rate of air that passes when air adjusted to a pressure of 19.6 KPa is flown using a gas permeability meter.
  • P L and P H are values that directly indicate the required characteristics of the airbag fabric, that is, the deployability of the airbag.By setting P L and P H within the above range, a sufficient function as a safety device is achieved. Thus, the object of the present invention can be achieved. And the P H exceeds 0. 1 cc / cm 2 / sec , 2 0 cc / c mV sec, air bag will not deploy smoothly in the event of a collision, the safety device role for not borne good better the ward.
  • the air permeability (P s) under high pressure after elongation of the base fabric is preferably 50 cc / cm 2 / sec or less.
  • P s refers to a base fabric sample of 20 cm in width and 15 cm in width, after applying a tensile force of 1764 N in the vertical direction at a tensile speed of 200 mm / min. It is expressed by the flow rate of air that passes when air adjusted to a pressure of 19.6 KPa is flown through a laminar-flow pipe-type air permeability meter into a circular section with a diameter of 10 cm at the center.
  • the residual entanglement of the warp constituting the base fabric is 10 yarns / m or less.
  • the residual entanglement is closely related to the above-mentioned levelness index HI, and the HI tends to increase by setting the warp residual entanglement to 10 nom or less, so that the air permeability of the base fabric can be satisfied. The result will be obtained.
  • the residual oil content of the warp and the weft constituting the base fabric is preferably 0.1% by weight or less.
  • the single yarn cross-sectional shape of the airbag fiber of the present invention is a so-called elliptical cross-section, a flat cross-section different from a rhombic cross-section as shown in Fig. 1, and the ratio of the maximum major axis length a to the maximum minor axis length b.
  • the oblateness represented by a / b is 1.5 to 8.0.
  • This cross-sectional shape is a shape in which a plurality of circles each having a short axis as a diameter are arranged in a row.
  • the surface flatness in the ⁇ -axis direction represented by the ratio c / b of the maximum minor axis length b to the minimum minor axis length c is 0.8 or more, and is preferable Is greater than 0.85.
  • the surface flatness rate within such a range, the friction between the single yarns increases, and good air permeability can be secured in the airbag base fabric using the fibers.
  • An airbag base fabric using a fiber having a surface flatness of less than 0.8 cannot suppress the air permeability, particularly the air permeability in the manufacturing part, and is suitable as the airbag fiber targeted by the present invention.
  • the fiber can be suitably used as an airbag fiber for obtaining the non-coated airbag base fabric aimed at by the present invention. .
  • the polyamide is preferably a polyamide having a sulfuric acid relative viscosity of 3.0 or more.
  • the component may be a homopolymer or a component containing a copolymer component.
  • titanium oxide, silicon oxide, or carbonic acid is used for the purpose of improving color tone, weather resistance, oxidation resistance, and the like.
  • An inorganic substance such as calcium, a weathering agent, and an agent such as an antioxidant may be contained.
  • the fiber for an airbag of the present invention can be produced by a usual melt spinning method.
  • FIG. 2 shows an example of a method for producing a polyamide fiber for an airbag.
  • the yarn (Y) spun from the spinneret pack (0) provided in the melt spinning machine passes through the heating area (1) provided immediately below the spinneret.
  • the length of the heating region (1) is preferably from 100 to 200 mm, and by setting the length in such a range, the airbag fiber of the present invention has both suitable strength and flatness'. Fiber becomes easier to obtain.
  • the yarn (Y) is cooled and solidified by the cooling air of 20 to 5 Om / min supplied from the cooling unit (2).
  • the lubrication is performed at the lubrication unit (4).
  • the yarn is taken off by the spinning take-off rollers 5) and (6).
  • the yarn (Y) is sequentially wound around a group of heating rollers (7), (8), and (9) rotating at high speed and stretched.
  • a tension adjusting roller (10) subjected to a relaxation treatment, entangled via a regulating guide (1 2 1 2 '.) And an entanglement device (1 1), and then wound up by a winder ( 1 Winded up by 3).
  • the relaxation treatment is important in determining the shrinkage characteristics of the fiber to be obtained.
  • a relaxation treatment of 3 to 15% is usually performed.
  • FIG. 3 (A) shows the shape of the nozzle discharge hole for obtaining the flat cross-section fiber of the present invention.
  • the discharge hole has a structure in which round holes (d) at both ends and inside are connected by a slit (e).
  • the number of the round holes (d) is two or more, and the diameter is two or more. 0.15 to 0.25 mm, slit (e) width 0 ⁇ 10 to 0.20 mm, length It is preferably from 0.10 to 0.20 mm.
  • the flatness of the surface in the long axis direction tends to deteriorate, and a problem is likely to occur in the air permeability of the airbag base fabric using the obtained fibers. .
  • a method for producing a base fabric for a non-coated airbag in the present invention that is, a weaving method for the base fabric, a war room jet room, a revival room, an air jet room, or the like can be used.
  • the residual oil content of the fabric is preferably 0.1% by weight or less. It is preferable to weave in the jet loo in the evening. Further, the warp tension during weaving is preferably 0.2 to 0.6 cNZdtex.
  • the flat cross-section fibers are easily arranged on the plane of the base fabric, that is, an effect of improving the levelness index HI and suppressing the air permeability of the base fabric can be expected. Further, after weaving, it is preferable to perform a scouring treatment and a heat setting treatment at 160 to 190 ° C.
  • the base fabric using the flat cross-section fiber of the present invention is suitable as a base fabric for airbags, particularly as a base fabric for uncoated airbags. It retains its own low air permeability and low air permeability in the sewn part, and is excellent in foldability and storage.This characteristic is manifested by the following effects unique to the base fabric using flat cross-section fibers. Is what you do.
  • the flat fiber base fabric of the present invention has excellent force-paring properties and low air permeability because the major axis of the cross section of each single yarn constituting the fibers is arranged in the horizontal direction of the base fabric during weaving.
  • the cross section of each single yarn of the flat fibers of the invention is a rectangular cross section, that is, a plurality of circles each having a diameter of the short axis. It is a flat section obtained by arranging in a line.
  • the length of the short axis is 15 m or less.
  • the fineness corresponds to 1 denier (1.1 dte X) or less.
  • the flat fibers of the present invention can be regarded as those in which such microfibers are arranged side by side, and as a result, a thin and flexible base cloth having excellent storability is obtained. It has the same characteristics as the above.
  • microfiber fabric for airbags Although it has been disclosed in the past, it is difficult to produce a stable yarn by straight spinning. On the other hand, the production by the polymer array method composed of sea islands is costly and practically difficult.
  • the present invention has excellent airbag base cloth characteristics such as low air permeability, excellent storage capacity, and thin and flexible compared to the conventional base cloth made of a simple single fiber. As for production, it can be easily produced based on the conventional melt spinning and direct spinning and drawing methods, and is extremely practical.
  • the measurement was performed according to JISL—1013.
  • the measurement was carried out according to JISL-113, under the conditions of a test length of 25 cm and a tensile speed of 30 cm / min.
  • the warp yarns were gripped one by one and removed from the base fabric at an angle of 20 to 45 ° with respect to the warp direction at a speed of about 40 to 60 seconds / m.
  • the number of entangled portions having a length of 1 mm or more was measured by a water immersion method, and the average value of 10 yarns was converted into the number of entangled fibers per meter of fiber.
  • the immersion bath is 70 cm long, 15 cm wide and 5 cm deep, and has a partition plate at 10 cm from both ends in the hand direction. Was filled to about 3 cm.
  • the measurement was performed by replacing pure water with each measurement.
  • the number of confounds after the tension treatment was measured by applying a load equivalent to 2 cN / dtex to a 1.0 m-long fiber, removing the load after 5 seconds, and using the water immersion method as above.
  • a sample obtained by removing the warp and the weft by the same method as the above-mentioned measurement of the residual entanglement was measured according to JIS L-109 (6.3.6.1 A method) (alcohol-benzene extraction method). For details, take a test piece of about 5 g, weigh it accurately, put it lightly in a Soxhlet extractor without using a cylindrical filter paper, and then mix it in an attached flask with an alcohol-benzene mixture adjusted at a solution ratio of 1: 2. After adding 20 ml of the liquid and heating the extract for 3 hours on a water bath, the solution accumulated in the sample part was returned to the flask. After the content of the flask was concentrated to about 3 ml, the content was transferred to a weighing bottle, the solvent was evaporated in a water bath, and the absolute dry weight of the residue was measured. The test was performed twice.
  • the residue obtained by JISL-11096 (3.3.6.1 A method) was collected, and the amount of monomer and oligomer (% by weight) of polyamide contained in the residue was determined. It was measured by a chromatograph and a high performance liquid chromatograph.
  • As standard products for quantification adipic acid and hexamethylenadipamide, Tokyo Chemical's special grade reagents, and nylon 66 cyclic trimer standard products prepared in-house were used.
  • the oil content was calculated according to the following equation using the average value of the two measurements obtained by the above method.
  • Oil alcohol ⁇ benzene extraction method measurement value-one monomer ⁇ oligomer measurement value
  • the measurement was carried out according to JISL—1096 (6.1.2.1 A method).
  • the measurement was carried out according to JISL—1096 (6.5.2 A—2 method).
  • the total fineness of the warp is D l (dtex), the weave density is' N1 (2.54 cm), the total fineness of the weft is D2 (dte), and the weave density is N2 (woven / 2.54 cm). It was calculated according to the formula (D 1 X 0.9) 1/2 X 1 + (D 2 X 0.9) 1/2 XN 2.
  • An airbag with a capacity of 60 liters was woven and folded into bellows four times each from the left and right so as to have an area of 150 x 150 mm, and further folded into bellows four times each from the top and bottom.
  • a load of 4000 g was applied to the folded bag, and the thickness of the bag at that time was measured.
  • Nylon 66 chips having a 98% sulfuric acid relative viscosity of 3.7 at 25 ° C were melt-spun at 295 ° C.
  • a yarn is spun from a spinning pack having a spinneret having a discharge hole shape shown in Table 1, and passed through a region heated to 230 ° C of 150 mm in length, which is installed immediately below the spinneret, and cooled.
  • Supply cooling air at 30m / min to cool and solidify the yarn, apply oil to the oil supply roller, and then take off roller, yarn supply roller, first stretching roller, and second stretching roller.
  • the film was sequentially wound around a tension adjusting roller, stretched in two steps with a total magnification of 4.1 times, subjected to a 7% relaxation treatment, and wound up at a speed of 380 Om / min by a winder.
  • a compressed air of 0.3 MPa was supplied to the entanglement device installed after the relaxation treatment to impart entanglement to the yarn.
  • Table 1 shows the physical properties of the synthetic fiber multifilament for an airbag obtained by the above method.
  • Total fineness (dte X) 4-67 467 467 ⁇ 467 467 467 467 467 467 Number of iron I filaments (pieces) 96 96 v3 ⁇ 4.96 72.1 4 96 96 96 Single yarn fineness (d tex) 4. 86 4. 86 4. 86 6.49 3.24 4. 86 4.
  • Example 9 Example 10 Example 11 Example 12 Example 13 Example 14
  • Gold round hole diameter (.mm) 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20
  • Outlet slit hole width 0.10 0. 10 0.10 0.10 0.10 0.10 0.10 Hole Length 0.10 0.20 0.10 0.10 0.10 0.10 Shape
  • the obtained synthetic fiber multifilament is warped at a speed of 20 Om min under a tension of 0.3 cN dtex to form a water jet loom (ZW303) made by Tsudakoma. Weaving was performed at a rotation speed of 800 rpm. Subsequently, the obtained woven fabric was immersed for 3 minutes in a 80 ° C hot water bath containing 0.5 g of sodium alkylbenzenesulfonate and 0.5 g of sodium ash, and then It was dried and refined for 3 minutes in an atmosphere of 30 ° C. Finally, heat setting was performed at 180 at 1 minute to obtain a fabric for an airbag.
  • Table 2 shows the weaving density (number of warp yarns / weft yarns) and the results of the property evaluation of the non-coated airbag fabric obtained by the above method.
  • Example 2 Example 3
  • Example 4 Example 5
  • Example 6 Example 7
  • Example 8 Weaving density (length / 3 pcs) (2.54 cin; 48 / 48'48 / 48 48/48 48/48 48/48 45/45 51/51 53 / 5.3
  • Example 9 Example 10 Example 10 Example 12 Example 13 Example 14
  • An airbag fiber was obtained, woven and heat-set to produce a non-coated airbag base fabric in the same manner as in Example 1, except that the woven fabric refining step was omitted.
  • Table 1 shows the base shape and fiber properties
  • Table 2 shows the base fabric characteristics.
  • Example 4 shows the properties of the obtained base fabric.
  • Air permeability (c c / c m2 / s ec)
  • Fibers for airbags and base fabrics for non-coated airbags were produced in the same manner as in Example 1, except that the warp tension during weaving was adjusted to 0.1 cN / dtex.
  • Table 3 shows the base shape and fiber properties, and Table 4 shows the base fabric characteristics.
  • the refining step was omitted, and in Comparative Example 9, the refining step and the heat setting step were omitted.
  • Base fabric was manufactured. Table 3 shows the base shape and fiber properties, and Table 4 shows the base fabric characteristics. From the results of Tables 1 to 4, the non-coated airbag fabric of the present invention has a suitable strength when compared with the conventional fabric, and has a low air permeability and a high pressure. It excels in breathability in fabric, breathability after elongation, and breathability under high pressure in the sewn area. Furthermore, the thickness of the base fabric is thin and it is excellent in foldability and storage. Thus, the base fabric for a non-coated airbag of the present invention can simultaneously satisfy all the characteristics required for an airbag. Industrial applicability
  • the base fabric for a non-coated airbag of the present invention has characteristics such as high strength, low air permeability, and good storage properties, and can be suitably used as an airbag for high-pressure deployment.
  • the synthetic fiber multifilament constituting the base fabric for an airbag of the present invention can be manufactured based on a normal melt-spinning / direct spinning drawing method, and a base weaving machine is also used. It is extremely practical because it can be manufactured by using

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Woven Fabrics (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un tissu de base non enduit de chaîne et/ou de trame, un multifilament en fibre synthétique possédant une planéité au niveau de la section d'un fil unique compris entre 1,5 et 8, une finesse de fil pouvant atteindre 10 dtex, et une finesse totale comprise entre 200 et 1000 dtex. Ce tissu est caractérisé en ce qu'il possède et présente simultanément :(1) un facteur de couverture compris entre 1700 et 2200, (2) une perméabilité à l'air (PL) à basse pression pouvant atteindre 0,1 cc/cm2/sec, et (3) une perméabilité à l'air (P¿H?) à haute pression pouvant atteindre 20 cc/cm?2¿/sec. Le tissu de base non enduit pour airbag est facile à loger, et conserve une résistance et une faible perméabilité à l'air nécessaire à un airbag.
PCT/JP2001/007064 2000-08-17 2001-08-16 Tissu de base non enduit et fibre pour airbag WO2002014590A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE60138761T DE60138761D1 (de) 2000-08-17 2001-08-16 Basisgewebe für unbeschichtete airbags
CA 2384790 CA2384790A1 (fr) 2000-08-17 2001-08-16 Fibre de base pour coussin gonflable non-enduit, et fibres pour coussins gonflables
EP01956923A EP1316633B1 (fr) 2000-08-17 2001-08-16 Tissu de base non enduit pour airbag
CNB018024483A CN1318668C (zh) 2000-08-17 2001-08-16 无涂层气囊用基布

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2000248028 2000-08-17
JP2000-248028 2000-08-17
JP2001028886A JP4538967B2 (ja) 2000-08-17 2001-02-05 エアバッグ用布帛
JP2001-28886 2001-02-05
JP2001102354A JP2002293209A (ja) 2001-03-30 2001-03-30 エアバッグ用繊維、その製造方法およびノンコートエアバッグ用基布
JP2001-102354 2001-03-30

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WO2002014590A1 true WO2002014590A1 (fr) 2002-02-21

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US (1) US20030008582A1 (fr)
EP (1) EP1316633B1 (fr)
KR (1) KR100792177B1 (fr)
CN (1) CN1318668C (fr)
CA (1) CA2384790A1 (fr)
DE (1) DE60138761D1 (fr)
TW (1) TWI230213B (fr)
WO (1) WO2002014590A1 (fr)

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WO2004009889A1 (fr) 2002-07-24 2004-01-29 Teijin Fibers Limited Textile comprenant des fils a filaments multiples et plats
CN100336948C (zh) * 2002-04-24 2007-09-12 高性能聚酰胺有限公司 具有成型长丝的高强度纱线

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US7413214B2 (en) * 2002-01-08 2008-08-19 Milliken & Company Airbag made from low tenacity yarns
JP3855775B2 (ja) * 2002-01-16 2006-12-13 東レ株式会社 コ−トエアバッグ用基布
JP2004052167A (ja) * 2002-07-22 2004-02-19 Teijin Fibers Ltd 吸汗性とドレープ性を有する嵩高編物
JP3895227B2 (ja) * 2002-07-24 2007-03-22 帝人ファイバー株式会社 衣料関連商品
EP1736582A4 (fr) * 2004-03-31 2007-11-14 Kb Seiren Ltd Tissu tisse de polyester
CN101633349B (zh) * 2005-10-20 2012-03-21 财团法人工业技术研究院 四角形断面纤维、织物及其制造方法
DE102006017274A1 (de) * 2006-04-12 2007-10-18 Bst Safety Textiles Gmbh Gewebe
CA2655825C (fr) * 2006-06-23 2015-02-03 Toray Industries, Inc. Tissu tisse pour sacs gonflables, sacs gonflables et procede de fabrication associe
CN101168881B (zh) * 2006-10-24 2011-06-15 东丽纤维研究所（中国）有限公司 安全气囊的无涂层织物及制造方法
CN101363154B (zh) * 2007-08-09 2011-05-18 东丽纤维研究所（中国）有限公司 一种气囊用织物
CN101440529B (zh) * 2007-11-23 2011-05-11 新光合成纤维股份有限公司 方形断面聚酰胺纤维的制造方法及其用途
BRPI0910390B1 (pt) * 2008-03-10 2021-11-16 Toray Industries, Inc. Tecido de bolsa de ar
CN102220685B (zh) * 2010-04-14 2014-07-23 东丽纤维研究所（中国）有限公司 一种无涂层气囊用织物及其生产方法
JP5093374B2 (ja) * 2011-03-10 2012-12-12 東洋紡株式会社 エアバッグ
JP5440967B1 (ja) * 2012-05-11 2014-03-12 東洋紡株式会社 ノンコートエアバッグ用織物
EP3243708A1 (fr) * 2012-07-25 2017-11-15 Autoliv Development AB Tissu pour un airbag
TWI613338B (zh) * 2012-08-02 2018-02-01 東麗股份有限公司 使用扁平多葉形斷面纖維之織物、及使用其之縫製品
EP3034663B1 (fr) * 2013-08-13 2019-04-03 Asahi Kasei Kabushiki Kaisha Tissu tissé
CN107438680B (zh) * 2015-04-22 2021-05-11 帝人芳纶有限公司 包含含有非圆形丝的复丝对-芳族聚酰胺纱线的帘线
CN106119999A (zh) * 2016-08-26 2016-11-16 山东合信科技股份有限公司 一种用于高支弹力纬纱纱芯的pa66未拉伸丝及其生产工艺
CN106149137A (zh) * 2016-08-26 2016-11-23 山东合信科技股份有限公司 一种环锭纺高伸长弹力纬纱及其生产工艺
CN106149138A (zh) * 2016-08-26 2016-11-23 山东合信科技股份有限公司 一种耐热性好的环锭纺弹力纬纱及其生产工艺
CN106120061A (zh) * 2016-08-26 2016-11-16 山东合信科技股份有限公司 一种环锭纺高强力弹力纬纱及其生产工艺
EP3530787B1 (fr) * 2016-10-21 2021-12-01 Jiaxing Deyong Textiles Co., Ltd. Métier à tisser, procédé de fabrication de textile, et textile obtenu
CN111133138B (zh) * 2017-09-28 2022-05-24 世联株式会社 非涂敷气囊用织物和气囊
CN108977952A (zh) * 2018-08-01 2018-12-11 浙江竟成特种单丝有限公司 一种六连体扁丝

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CN100336948C (zh) * 2002-04-24 2007-09-12 高性能聚酰胺有限公司 具有成型长丝的高强度纱线
WO2004009889A1 (fr) 2002-07-24 2004-01-29 Teijin Fibers Limited Textile comprenant des fils a filaments multiples et plats

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KR20020041450A (ko) 2002-06-01
CN1318668C (zh) 2007-05-30
EP1316633A1 (fr) 2003-06-04
CN1388842A (zh) 2003-01-01
DE60138761D1 (de) 2009-07-02
CA2384790A1 (fr) 2002-02-21
EP1316633B1 (fr) 2009-05-20
EP1316633A4 (fr) 2006-07-26
US20030008582A1 (en) 2003-01-09
KR100792177B1 (ko) 2008-01-07
TWI230213B (en) 2005-04-01

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