WO2002079558A1 - Tissu tricote tridimensionnel utilise pour un siege - Google Patents
Tissu tricote tridimensionnel utilise pour un siege Download PDFInfo
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- WO2002079558A1 WO2002079558A1 PCT/JP2002/003231 JP0203231W WO02079558A1 WO 2002079558 A1 WO2002079558 A1 WO 2002079558A1 JP 0203231 W JP0203231 W JP 0203231W WO 02079558 A1 WO02079558 A1 WO 02079558A1
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- Prior art keywords
- knitted fabric
- dimensional knitted
- dimensional
- yarn
- monofilament
- Prior art date
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
- D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
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- 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
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
- D10B2403/0213—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics with apertures, e.g. with one or more mesh fabric plies
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- 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
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/024—Fabric incorporating additional compounds
- D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
- D10B2403/02411—Fabric incorporating additional compounds enhancing mechanical properties with a single array of unbent yarn, e.g. unidirectional reinforcement fabrics
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- 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
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/024—Fabric incorporating additional compounds
- D10B2403/0241—Fabric incorporating additional compounds enhancing mechanical properties
- D10B2403/02412—Fabric incorporating additional compounds enhancing mechanical properties including several arrays of unbent yarn, e.g. multiaxial fabrics
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- 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
- D10B2505/08—Upholstery, mattresses
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- 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.]
- Y10T442/40—Knit fabric [i.e., knit strand or strip material]
- Y10T442/45—Knit fabric is characterized by a particular or differential knit pattern other than open knit fabric or a fabric in which the strand denier is specified
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- 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.]
- Y10T442/40—Knit fabric [i.e., knit strand or strip material]
- Y10T442/488—Including an additional knit fabric layer
Definitions
- the present invention relates to cushioning materials for seats such as automobiles, railcars, aircraft, child seats, baby seats, furniture, offices, bedding, bed pads, mattresses, bedsore prevention mats.
- Suitable for cushioning materials such as cushions, pillows and cushions, spacers for clothing, etc., shape-retaining materials, cushioning materials, heat-insulating materials, upper materials for insoles, insole materials, supporters and protectors, etc.
- the present invention relates to a three-dimensional knitted fabric used. Background art
- the three-dimensional knitted fabric composed of the front and back two-layer knitted fabric and the connecting yarn connecting the two-layered knitted fabric makes use of functions such as cushioning, air permeability, heat retention, and body pressure dispersibility. It is used for various cushioning materials.
- These three-dimensional knitted fabrics use a monofilament as the connecting yarn that constitutes the intermediate layer, and provide cushioning in the thickness direction of the three-dimensional knitted fabric by utilizing the bending elasticity of the monofilament. ing.
- Japanese Patent Application Laid-Open No. 11-2696747 discloses a three-dimensional knitted fabric using a monofilament having good elastic recovery properties as a connecting yarn. There is disclosed a three-dimensional knitted fabric having improved compression recovery.
- a durable cushioning property is not obtained. There was a problem that a decrease in the amount occurred.
- a more specific object of the present invention is to provide a cushioning property with a repulsive sensation when used in a hammock-type seat sheet, and to provide a good fit to the human body, and
- An object of the present invention is to provide a three-dimensional knitted fabric which does not restore its original shape after sitting, has little so-called settling, and has good shape retention.
- a further object of the present invention is to provide a three-dimensional knitted fabric having good high-frequency vibration damping properties. Disclosure of the invention
- the present inventor has described a structure of a three-dimensional knitted fabric configured by combining a diameter and a curved shape of a monofilament connecting a front and back knitted fabric of the three-dimensional knitted fabric, a compression characteristic, a compression bending characteristic, and a fiber material of the three-dimensional knitted fabric. After repeated studies, the present invention was conceived.
- the present invention relates to a three-dimensional knitted fabric composed of a two-layered knitted fabric and a monofilament connecting yarn connecting the two-layered knitted fabric, wherein the curvature of the monofilament in the three-dimensional knitted fabric is 0.
- the three-dimensional knitted fabric is characterized in that the monofilament has a flexural elongation of not more than 20% when the three-dimensional knitted fabric is compressed by 50%.
- BRIEF DESCRIPTION OF THE FIGURES Figure 1 is an example showing the center line of a monofilament as viewed from a cut surface along the ale row of a three-dimensional knitted fabric.
- FIG. 2 is an example showing a curved state of the monofilament in a state where the three-dimensional knitted fabric is compressed by 50%, as viewed from a cut surface along the ale row of the three-dimensional knitted fabric.
- FIG. 3 is a cross-sectional view of the three-dimensional knitted fabric along a course row.
- Fig. 4 is a cross-sectional view along the course row when the three-dimensional knitted fabric is compressed by 50%.
- FIG. 5 is an example of the truss structure of the connecting yarn in a cross-sectional view along the course row of the three-dimensional knitted fabric.
- FIG. 6 shows an example of a cross-section structure of a connecting yarn in a cross-sectional view along a course row of a three-dimensional knitted fabric.
- Fig. 7 shows an example of the load-displacement curve of a three-dimensional knitted fabric.
- the connecting yarn connecting the front and back knitted fabrics is always knitted in a curved state in either direction. Therefore, when a force in the thickness direction is applied to the three-dimensional knitted fabric, the already curved connecting yarn is more bent, and when the force is released, the connecting yarn returns to the original state.
- the bending and recovery behavior of the connecting yarn that occurs at this time greatly affects the cushioning properties of the three-dimensional knitted fabric.
- the present invention is based on this finding.
- the three-dimensional knitted fabric of the present invention it is necessary to use a monofilament for at least a part of the connecting yarn that connects the two-layered knitted fabric, and the monofilament positioned between the front and back knitted fabrics of the three-dimensional knitted fabric. It is necessary to knit and finish the three-dimensional knit so that the curvature of the three-dimensional knitting becomes 0.01 to 1.6.
- the curvature of the monofilament is the centerline of the monofilament at the portion where the monofilament is maximally curved in the three-dimensional knitted fabric. This refers to the curvature of a circular arc.
- Figure 1 is an example showing the center line (5) of the monofilament as viewed from the cut surface along the ale row of the three-dimensional knitted fabric (1).
- the curvature of the monofilament is more preferably from 0.03 to 1.0, and even more preferably from 0.05 to 0.7. If the curvature of the monofilament is less than 0.01, when a load is applied in the thickness direction of the three-dimensional knitted fabric (1), the knitted fabric in the front and the back of the three-dimensional knitted fabric are moved in the length direction of the three-dimensional knitted fabric (in the ale row). Shearing direction is likely to occur, and hysteresis loss during compression recovery is large, resulting in cushioning without elasticity. The tendency is further increased by repeated compression. If the curvature ( ri ) of the monofilament exceeds 1.6, shear deformation is unlikely to occur, but this also results in cushioning without elasticity.
- the bending and elongation of the monofilament when the three-dimensional knitted fabric is compressed by 50% is preferably 20% or less. It is more preferably at most 15%, further preferably at most 10%.
- the bending and elongation rate of the monofilament is the elongation rate of the convex surface at the point where the monofilament is maximally bent when the three-dimensional knitted fabric is compressed by 50%.
- FIG. 2 is a cross-sectional view of the knitted fabric in a state where the three-dimensional knitted fabric (1) is compressed by 50% along the ale row, and shows an example of the convex surface (6) where the monofilament is bent to the maximum.
- the flexural elongation of the monofilament exceeds 20%, the residual strain after compressing the three-dimensional knitted fabric becomes large, resulting in a three-dimensional knitted fabric having inferior compression recovery, and the elasticity after repeated or long-time compression is reduced. The cushioning property cannot be maintained.
- the flexural elongation of the monofilament of the three-dimensional knitted fabric is 20% or less at the time of 75% compression, it is more preferable from the viewpoint of improving the compression recovery property and the cushioning durability.
- the thickness of (1) and the diameter of the monofilament to be used, the knitting structure of the monofilament in the three-dimensional knitted fabric (the width in the width direction when connecting the front and back knitted fabrics), and the monofilament during knitting It is necessary to optimize the supply amount and the finishing method (thickness ratio, overfeed rate) of the three-dimensional knitted fabric, and to make the monofilament after finishing processing an appropriate shape.
- the connecting yarn is inclined obliquely in the width direction of the knitted fabric (the direction along the course row) to connect the front and back knitted fabrics.
- the thickness T of the three-dimensional knitted fabric (1) before compression is shown in the cross-sectional view along the course row of the knitted fabric (1) in Fig. 3.
- the relationship between the connecting thread length HI (mm), which is obtained by subtracting the thickness of the front and back knitted fabric from (mm), and the connecting thread length H2 (mm) after 50% compression shown in Fig. 4 is Hl / H2 ⁇ It is preferable to set the ratio to 0.55 in order to reduce the flexural elongation when the body knit (1) is compressed by 50% to 20% or less. At this time, as shown in FIGS.
- the connecting yarn lengths H1 and H2 are determined when the three-dimensional knitted fabric (1) is viewed from the cut surface along the course row and the front knitted fabric and the back knitted fabric (2). This is the apparent length of the connecting yarn (4) between (3) and (3), and is the length measured by photographing a cut surface along the course row.
- the connecting yarn When the connecting yarn is inclined obliquely in the direction along the course row, the connecting yarn should also be inclined in the direction opposite to the inclined connecting yarn, so that the connecting yarn has a truss structure, which will be described later. Is preferred.
- the curvature of the three-dimensional knitted fabric ranges from 0.01 to 1.6, and the bending and elongation ratio at 50% compression becomes less than 20%. It is necessary that it be at least 20% of the total number of monofilaments connecting the knitted fabrics, more preferably at least 40%, further preferably at least 60%.
- the connecting yarns of the three-dimensional knitted fabric are preferably all monofilaments, but if necessary, fibers other than monofilaments may be knitted and knitted at the time of knitting. For example, it is preferable to knit multifilament false twisted yarns, etc., because it is possible to reduce the unpleasant sound generated when the monofilaments rub against each other during compression.
- the thickness and monofilament of the three-dimensional knitted fabric should be such that the bending and elongation of the monofilament of the connecting yarn is 20% or less. It is important to optimize the diameter of the monofilament and the inclination of the monofilament.
- the relationship between the diameter D (mm) of the monofilament and the thickness T Q (mm) of the three-dimensional knitted fabric satisfy the following expression.
- the thickness T Q (mm) of the three-dimensional knitted fabric is a thickness measured with a load of 49 OPa.
- the stress relaxation rate after 1 minute under 50% compression may be 40% or less.
- the stress relaxation rate is 30% or less.
- instantaneous recovery is good even when a person sits on the three-dimensional knit for a certain period of time.
- a hammock-type seat is a three-dimensional knitted fabric that looks like a sail by stretching around or around at least two sides of the three-dimensional knitted fabric in a seat frame or chair frame with tension or slack. In such a state, the seat and backrest of the seat are formed.
- the amount of compressive deflection is the radius of the three-dimensional knit when a load is applied in the direction perpendicular to the surface of the three-dimensional knit, with the periphery of the three-dimensional knit being cut into a square fixed to a frame.
- the compression radius is more preferably 15 mm or more and 7 O mm or less, and still more preferably 15 mm or more and 6 O mm or less.
- the elongation characteristics of the three-dimensional knitted fabric in the vertical direction (the direction along the ale direction) and the horizontal direction (the direction along the course row) and the compression characteristics in the thickness direction are important.
- the elongation rate in the vertical direction and the horizontal direction is 3% or more and 50% or less
- the sinking amount is relatively large, and the fitting property to the human body is improved.
- the elongation rate of the three-dimensional knitted fabric in the vertical and horizontal directions is 0.5%. It is preferably at least 20%. More preferably, it is 1% or more and 15% or less.
- the residual strain in the vertical and horizontal directions when the three-dimensional knitted fabric is stretched reduces the settling after sitting on the hammock seat. Above, 10% or less is preferable. It is more preferably at most 7%, and even more preferably at most 5%.
- the braiding and finishing methods of the front and back of the three-dimensional knit are important. If the knitting structure on the front and back is a perforated structure such as a mesh, the number of stitches (courses) that make up one mesh is determined.
- the length is 12 courses or less
- the finishing method is to balance the elongation rate in the vertical direction and the horizontal direction, and to set the width in the horizontal direction and heat set.
- at least one of the knitted structures on the front and back is a knitted structure such as a flat structure or uneven structure without holes, a knitted structure in which the entire course is formed by a knit loop, or a combined structure of a knit loop structure and an inserted structure, etc. Can be used.
- Hammock-type seats are often sinked, and in order to obtain cushioning with good fit, the knit loop must not be formed on all courses in order to increase the stretch rate of the three-dimensional knitted fabric relatively.
- a knitting structure that forms a knit loop in at least half of all courses without knitting is preferable.
- the hammock-type seat sheet shows a cushioning property that gives a sense of resilience, and in order to improve the shape retention after repeated or prolonged sitting, the stretch rate of the three-dimensional knitted fabric is relatively high.
- the insertion yarn is linearly inserted in at least one of the front and back of the three-dimensional knitted fabric in the vertical direction and / or the horizontal direction.
- the elongation characteristics of the three-dimensional knitted fabric in the warp direction and / or the weft direction can be changed by the deformation of the stitches of the front and back knitted fabric. It is not greatly affected by the deformation of the form, and is determined by the elongation characteristics of the inserted yarn itself.
- an almost vertical external force acts on the surface of the three-dimensional knitted fabric stretched in a hammock style, and the knitted fabric on the front and back of the three-dimensional knitted fabric is stretched. Slip between fibers due to the deformation of the brush shape is unlikely to occur, and the shape after repeated or prolonged sitting Good state retention.
- the state where the insertion yarn is linearly inserted into at least one of the front and back knitted fabrics means that, in the case of the vertical direction, a needle loop of the ground yarn knitted with a structure such as a chain stitch or a denbi stitch.
- a swing width of two stitches or less per course between the sinker loop and the sinker loop of the ground yarn connected in the length direction of the three-dimensional knitted fabric It means that the insertion yarn is inserted in a form close to a straight line over the entire length of the three-dimensional knitted fabric.
- the insertion yarn is close to a straight line between the needle loop and the sinker loop of the ground yarn that is knitted with a chain knit or denbi knit, so as to cover the entire width of the three-dimensional knitted fabric. Means that it is inserted.
- a fiber having a good elastic recovery such as a polytrimethylene terephthalate fiber or a polyester-based elastomer fiber as a fiber used for the insertion yarn, and a monofilament.
- the elongation and recovery properties are less likely to be impaired by the frictional resistance between the single fibers, which is more preferable.
- the insertion yarn is bonded to the ground yarn by heat fusion or resin bonding in order to prevent slippage with the ground yarn.
- the insertion method of the inserted yarn can be inserted by the knitting structure if it is inserted in the vertical direction, and if the insertion is in the horizontal direction, the weft is inserted using a double Russell knitting machine equipped with a weft insertion device. Can be inserted.
- the three-dimensional knitted fabrics do not need to have the same knitting structure and may have different knitting structures and different elongation characteristics, but the elongation rate of the back knitted fabric is lower than that of the front knitted fabric.
- the sense of sensation due to the monofilament is added and the fit to the human body is improved.
- the insertion yarn is linearly inserted in the vertical direction and the Z or horizontal direction, it is preferable to insert the yarn into the knitted fabric on the back side of the three-dimensional knitted fabric.
- the three-dimensional knitted fabric has a hysteresis loss of 65% or less at the time of compressive bending, which is a repulsion when used as a hammock type seat. It is preferable because it has a good cushioning property. It is more preferably 60% or less, more preferably 50% or less, and the closer to 0, the better. Further, it is preferable that the standing knitted fabric has a residual strain amount of 30 mm or less at the time of compression radius in order to reduce settling after long or repeated sitting and to improve shape retention. It is more preferably at most 20%, more preferably at most 15%, and the closer to 0, the better.
- a method of elongating and heat-treating the fibers constituting the front and back at an elongation of 0% or more can be achieved.
- the heat treatment may be performed by underfeed heat treatment at the stage of yarn production, false twisting, fluid processing, etc., or elongation heat treatment at the stage of knitted fabric.
- the three-dimensional knitted fabric of the present invention preferably has a compression recovery rate of 90% or more at room temperature and a compression recovery rate of 70% or more in a 70 ° C. atmosphere. More preferably, the compression recovery rate at room temperature is 95% or more, and the compression recovery rate at 70 ° C atmosphere is 75% or more. Since the compression recovery at room temperature is 90% or more, there is little settling even under normal use, and good cushioning properties are obtained. In addition, since the compression recovery rate in a 70 ° C atmosphere is 70% or more, even after being placed in a high-temperature and severe environment, there is little settling and excellent cushioning properties. Becomes
- the monofilament used for the connecting yarn of the three-dimensional knitted fabric of the present invention includes polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, polyethylene ethylene terephthalate fiber, polyamid fiber, and polypropylene fiber. Fibers of any material, such as fiber, polyvinyl chloride fiber, polyester elastomer fiber, etc., can be used, but if at least a part of the connecting yarn is used, a polytrimethylene terephthalate fiber is used. It has an elastic cushioning property, and has good cushioning durability after repeated or long-time compression.
- the fibers used for the front and back knitted fabrics of the three-dimensional knitted fabric are polyester fibers such as polyethylene terephthalate fiber, polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, etc.
- Use arbitrary fibers such as synthetic fibers such as polyacrylic fibers and polypropylene fibers, natural fibers such as cotton, hemp, and wool, and regenerated fibers such as cupra rayon, viscose rayon, and lyocene. Can be.
- the use of polymethylethylene phthalate fibers is preferable because the compression radius can be increased when the three-dimensional knitted fabric is used for a hammock type sheet, and the stroke feeling and the fit feeling are good.
- the polytrimethylene terephthalate fiber has an elongation of 0% or more, and is subjected to elongation heat treatment at the stage of yarn production, yarn processing, or knitting. It is more preferable to reduce the residual strain. In the case of a knitted fabric, it is more preferable that the stretch heat treatment is performed at a tentering rate of 5% or more.
- the cross-sectional shape of the fiber may be polygonal such as round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, eight-leaf-shaped, flat, dog-bone, multi-lobed, hollow, or irregular. Good.
- the form of the fiber may be any of unprocessed yarn, spun yarn, twisted yarn, false twisted yarn, fluid jet yarn, etc., and may be multifilament or monofilament.
- a bulky yarn such as a multifilament false twisted yarn or a spun yarn on at least one side of the three-dimensional knitted fabric.
- a monofilament at least on one side of the knitted fabric.
- the monofilament is a composite yarn such as a side piside because the stretchability and the recoverability are improved.
- the front and back yarns and connecting yarns are When it is composed of 100% of ester-based fibers, it is possible to recycle it into a monomer by depolymerization at the time of disposal, and it is also preferable to prevent generation of harmful gas even when incinerated.
- poly Application Benefits terephthalate fibers used preferably is a poly ester fiber which bets re terephthalate units as a main recurring unit, the door re-methylene terephthalate units 5 0 mole 0/0 or more , preferably 7 0 mol% or more, more preferably rather 8 0 mole 0 /. Above, most preferably 90 moles. /. It includes the above.
- Polytrimethylene terephthalate is synthesized by combining terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions. You. In this synthesis process, an appropriate one or more tertiary components may be added to form a copolymerized polyester, or polytrimethylene terephthalate such as polyethylene terephthalate or polybutylene terephthalate. Polyester other than latet, nylon and polytrimethylene terephthalate may be separately synthesized and then blended or composite-spun (sheath core, side pieside, etc.).
- the first component is polytrimethylene terephthalate
- the second component is polytrimethylene terephthalate, polyethylene terephthalate, polyethylene, etc.
- polyester such as butylene terephthalate or nylon
- a combination of polytrimethylene terephthalate and copolymerized polytrimethylene terephthalate and a combination of two types of polytrimethylene terephthalate having different intrinsic viscosities are preferable.
- the joint surface shape is such that the lower viscosity side encloses the higher viscosity side.
- a composite yarn spun into a curved side-by-side type has a high degree of elongation recovery, and is therefore preferably used for the front and back fabric of a three-dimensional knitted fabric.
- the third components to be added include aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexanedicarboxylic acid, etc.), and aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophtal).
- Acids, etc. aliphatic glycols (ethylene glycol, 1,2-propyl pyrene glycol, tetramethylene dalichol, etc.), alicyclic glycols (cyclohexanedimethanol, etc.), aliphatics containing aromatics Glycol (1,4-bis (jS-hydroxyethoxy) benzene, etc.), polyether glycol (polyethylene glycol, polypropylene propylene glycol, etc.), aliphatic oxycarboxylic acid (0) —oxy force Carboxylic acid) and aromatic oxycarboxylic acid (such as P-oxybenzoic acid).
- Compounds having one or more ester-forming functional groups can also be used in a range where the polymer is substantially linear.
- anti-oxidants such as titanium dioxide, etc.
- stabilizers such as phosphoric acid
- ultraviolet absorbers such as hydroxybenzophenone derivatives
- crystallization nucleating agents such as talc
- lubricating agents such as aerosil
- Flame retardants antistatic agents, pigments, optical brighteners, infrared absorbers, defoamers, etc. It may be contained.
- the monofilament of poly (trimethylene terephthalate) fiber can be produced, for example, by the method described in Japanese Patent Application No. 2000-93724. That is, polytrimethylene terephthalate is discharged from the spinneret, quenched in a cooling bath, wound up in the first opening, and then stretched in hot water or a dry heat atmosphere with a second roll. After winding, it can be manufactured by a method such as overheating in a dry heat atmosphere or a wet heat atmosphere, and then winding it in the third mouth.
- the cross-sectional shape of the fiber may be round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, Yaba-shaped, flat, dogbone-shaped, etc., polygonal, multi-lobed, hollow, or irregular. Good, but a round cross section is preferred for improving the cushioning durability of the three-dimensional knitted fabric.
- the fibers used for the monofilament of the front and back knitted fabrics or the connecting yarns of the present invention are preferably colored.
- the coloring method is a method of dyeing uncolored yarn in the form of a skein or cheese (yarn dyeing), and pigmenting the stock solution before spinning.
- the thickness of the monofilament used for the connecting yarn is preferably 100 to 100 decitex, more preferably 200 decitex. ⁇ 900 decitex.
- a fiber such as a multifilament used for the front and back knitted fabrics, usually a fiber having a thickness of 50 to 250 decitex can be used, and the number of filaments can be arbitrarily set.
- the monofilament applied to one needle of the knitting machine The fineness T (decitex) of all multifilaments and the fineness d (decitex) of all multifilaments should be T / d ⁇ 0.9, so that the monofilament is coated with multifilament to prevent the monofilament from being exposed to the surface of the three-dimensional knitted fabric.
- the surface of the three-dimensional knitted fabric is preferred because of its inherent luster, which suppresses the glare of the surface and improves the texture of the surface.
- the three-dimensional knitted fabric of the present invention can be knitted by a knitting machine having two rows of opposing needle beds, and can be knitted by a double Russell knitting machine, a double circular knitting machine, a flat knitting machine having a V-bed, or the like. In order to obtain a three-dimensional knitted fabric having good dimensional stability, it is preferable to use a double Russell knitting machine.
- the gauge of the knitting machine is preferably from 9 gauge to 28 gauge.
- the knitted fabric on the front and back of the three-dimensional knitted fabric may be a mesh fabric with four or six corners, etc., or a knitted fabric with multiple openings, such as a marquette knit fabric, to improve the lightness and air permeability.
- a flat structure may be used to improve the feel. Brushing the surface gives a better touch.
- the number of connecting yarns in an area of the three-dimensional knitted fabric of 2.54 cm square is set to N (book Z 2.54 cm square), and the decitex of the connecting yarn is set to T (g / lxi 0 6 cm), when the specific gravity of the connecting yarn was p Q (g Z cm 3) , the three-dimensional knit fabric 2.
- the total cross-sectional area of the connecting yarn that is in the area of 5 4 cm square is preferably from 0.03 to 0.35 cm 2, and more preferably from 0.05 to 0.25 cm 2 .
- the three-dimensional knitted fabric has good cushioning properties with more appropriate rigidity.
- the connecting yarn may form a loop-shaped stitch in the front and back knitted fabric, or may have a structure in which the connecting yarn is hooked into the front and back knitted fabric in a weave structure, but at least two connecting yarns are used for the front and back knitted fabric.
- the three-dimensional knitted fabric in a cross-shaped (X-shaped) or torus-like shape. It is preferable in order to increase the value.
- the angle formed by the two connecting yarns (4) and (4) is 40, as shown in the cross-sectional view along the knitted fabric (1) course row in Fig. 5. When it is up to 160 degrees, the dimensional stability of the three-dimensional knitted fabric is increased, which is preferable.
- the angle (0 2 ) formed by the two connecting yarns (4) and (4) is 1 as shown in the cross-sectional view along the knitted fabric (1) course row in FIG. 5 to: It is preferable that the angle be 150 degrees.
- the two connecting yarns for both the truss structure and the cross structure may be one in which the same connecting yarn is folded on the front surface or the back surface, and the apparent number is two.
- the two connecting yarns are on the same course and do not need to form a truss structure or a cross structure, and it is only necessary that the truss structure and the opening structure be formed within five courses.
- the thickness and basis weight of the three-dimensional knitted fabric can be arbitrarily set according to the purpose, but the thickness is preferably 3 to 30 mm. If it is less than 3 mm, the cushioning property tends to decrease, and if it exceeds 30 mm, it is difficult to finish the three-dimensional knit.
- the basis weight is 150 to 300 gm 2 , preferably 200 to 2000 g / m 2 .
- a greige machine can be finished through processes such as scouring and heat setting. If either the connecting yarn or the front and back yarn is an uncolored three-dimensional knit, the greige machine can be finished through processes such as scouring, dyeing, and heat setting.
- the three-dimensional knitted fabric is processed into various shapes, such as hammock seats and bed pads, by processing the edges by means of fusion, sewing, resin processing, etc., or shaping it into a desired shape by thermoforming. Can be used for applications.
- the methods for measuring various physical properties of the three-dimensional knitted fabric are as follows.
- An enlarged photograph of the curved state of the monofilament of the connecting yarn of the three-dimensional knitted fabric is taken from the direction perpendicular to the arc (semicircle) formed by the curved monofilament. At this time, if the connecting yarn is inclined, take pictures according to the angle of inclination.
- the magnified photograph is read into a computer using an image scanner, and a high-definition image analysis system I P 100 P C (product name
- the thickness T Q (mm) of the three-dimensional stripe is measured under a load of 490 Pa, and the three-dimensional knit is compressed 50% so that the thickness of the three-dimensional knit becomes T Q / 2 (mm).
- an enlarged photograph of the curved state of the monofilament is taken at right angles to the arc (semicircle) formed by the curved monofilament.
- the magnified photograph is read into a computer using an image scanner, and as described above, the radius of curvature r 2 (mm) of the arc formed by the center line of the monofilament at the location where the curvature of the monofilament is the strongest is calculated, and the curvature is calculated by the following equation. Calculate the elongation ratio S (%).
- D is the diameter (mm) of the monofilament.
- the three-dimensional knitted fabric may be cured with a resin in a state where the three-dimensional knitted fabric is compressed by 50% in order to easily take a photograph.
- Shimadzu Autograph AG- B type manufactured by Shimadzu Corporation
- the disc-shaped compression jig having a diameter of 1 0 0 mm, 1 5 cm square placed on a rigid surface, the three-dimensional knitted fabric Thickness T Q (mm) 1 T at a speed of O mm / min. Compress to a thickness of / 2 and release at a speed of 1 Omm / min as soon as the specified thickness is reached. From the load-displacement curve of the three-dimensional knitted fabric shown in Fig.
- ⁇ (%) ⁇ (To-T / T 0 ⁇ X 1 0 0
- 1 (mm) is the thickness of the three-dimensional knitted fabric under the load of 490 Pa immediately after release.
- a square plate-shaped metal frame with an inner diameter of 30 cm on a side and an outer diameter of 41 cm on a side Does not loosen the three-dimensional knit during And fix the surroundings with a vise.
- Test specimens are taken in the vertical direction (direction along the ale row) and the horizontal direction (direction along the course row). Fix one end of the test piece with a chuck and hang it. At the other end, fix a load of 3 ON with the chuck and hang it. After 5 minutes, measure the length LI (cm) between marks, remove the load, and measure the length L 2 (cm) between marks 1 minute later. Calculate the distortion.
- I (%) ⁇ (L 1-2 0) / 2 0 ⁇ X 1 0 0
- Thickness T. (Mm) 3D knitted fabric. / 2 (mm) in a 50% compressed state at room temperature (23 ⁇ 0.5 ° C) or 70 ° C (soil 0.5 ° C) for 22 hours . 2 After 2 hours, release the compression and leave it at room temperature for 3Q minutes. Measure the thickness T2 and calculate the compression recovery rate R (%) using the following formula.
- the thickness of the three-dimensional knitted fabric is set to T. (Mm) after the repeated 2 50,000 times 50% compression as to become a thickness of T Q / 2, measured Thickness T 3 (mm) under a load of 4 9 0 P a, the following equation Calculates the residual compression strain ⁇ (%) repeatedly.
- ⁇ (%) ⁇ ( ⁇ . 1 ⁇ 3 ) / ⁇ . ⁇ X 100
- Acceleration at constant displacement of ⁇ 1 mm 0.1 Measure the output acceleration under the conditions of G, frequency 10 to 200 Hz, sine wave log sweep, and obtain the acceleration transmissibility-frequency curve.
- the frequency at which the acceleration transmissibility (dB) becomes maximum is defined as the resonance frequency, and the acceleration transmissibility at the resonance frequency and the acceleration transmissibility at 200 Hz are determined.
- the smaller the transmissibility of the acceleration the better the vibration damping property of the three-dimensional knitted fabric.
- the chair (four legs, no backrest) made of a square metal frame with a 40 cm square seat is sewn and ported so as not to loosen around the three-dimensional knitted fabric, and weighs 65 K g male sits 10 times for 5 minutes each, and the cushioning is evaluated by sensory evaluation.
- ⁇ There is resilience
- ⁇ Somewhat resilience
- ⁇ Slight resilience
- X There is little repulsion, and it is evaluated on a four-point scale.
- Poly (trimethylene terephthalate) monofilament used in Examples was produced by the following method.
- ⁇ sp / c 0.92 (measured at 35 ° C using o-phenol as solvent) at a spinning temperature of 265 ° C.
- the unstretched monofilament was thinned by pulling it with the first roll group at a speed of 16.OmZ. While stretching by 5 times in a stretching bath at 5 ° C, it is pulled by a second roll group for 80.0 mZ, and then subjected to a relaxation heat treatment in a steam bath at 120 ° C.
- the third roll group After passing through the third roll group at 0.0 m / min, it was wound by a winding machine at the same speed as the third roll group to produce a stretched monofilament of 280 dtex. Similarly, a stretched monofilament of 880 decitex was produced.
- the two knitted fabrics forming the back side are made from 3 34 decitex 96 filament polytrimethylene terephthalate fiber false twisted yarn (manufactured by Asahi Kasei Corporation, trademark “Solo” false twisted yarn 1 67 decitex 4 8 filament black dyed yarn, two lines aligned) L5 guide in 1 in 1 lattage, L6 guide In a 1-art 1-in array Supplied to form the connecting yarn 280 decitex poly 1, trimethylene terephthalate monofilament (0.16 mm in diameter) manufactured in the reference example from L4 Pro Supplied. With the knitting structure shown below, a three-dimensional knitted fabric was knitted at a density of 15 courses Z2.54 cm.
- the obtained greige fabric was set to a width of 20% and set to dry heat at 150 ° C for 2 minutes.
- the knitted fabric on the front side had a flat structure and the knitted fabric on the back had a mesh structure.
- the stitches 3 ⁇ ale away from the stitches on the back side opposite to the stitches on the knitted fabric on the front side were obliquely connected to obtain a three-dimensional knitted fabric having an X structure.
- Table 1 shows the physical properties of the obtained three-dimensional knitted fabric.
- the 280 decitex polytrimethylene terephthalate monofilament produced according to the reference example was further subjected to continuous relaxation heat treatment at a dry heat temperature of 160 ° C. with a further 3% overfeed rate.
- the obtained polytrimethylene terephthalate monofilament had a hysteresis loss at the time of bending recovery of 0.02cN'cmZyarn.
- a three-dimensional knitted fabric having various physical properties shown in Table 1 was obtained in the same manner as in Example 1 except that this monofilament was supplied from the pile of L4 forming a connecting yarn.
- decitex polybutylene terephthalate monofilament manufactured by Asahi Kasei Corporation was subjected to continuous relaxation heat treatment in the same manner as in Example 2, and the hysteresis loss at the time of bending recovery was 0.025 cN'cm /. The monofilament of yarn was obtained.
- a three-dimensional knitted fabric having various physical properties shown in Table 1 was obtained in the same manner as in Example 3 except that this monofilament was supplied from the pliers of L4 forming the connecting yarn.
- polyethylene terephthalate fiber false twisted yarn 1 6 7 decitex 4 8 filament black dyed yarn, 6 lines) are supplied in a 1-in-1-out arrangement to the L5 guide and 1-out 1-in arrangement in the L6 guide, and connected.
- An 880 dtex polytrimethylene terephthalate monofilament (diameter 0.29 mm) manufactured in the reference example from the L4 string forming the yarn was supplied in an all-in arrangement.
- a three-dimensional knitted greige fabric was knitted at a density of 10-course driving and a Z of 2.54 cm with the same knitting structure as in Example 1 except that the knitting structure of the connecting yarn was changed as follows.
- the obtained greige fabric is stretched by 10% and dry-heat-set at 150 ° C for 2 minutes, and the stitches in which all the connecting yarns are 2 ⁇ ale away from the stitches on the back side opposite to the stitches on the front side knitted fabric are obtained.
- a three-dimensional knitted fabric forming an X structure was obtained.
- Table 1 shows the physical properties of the obtained three-dimensional knitted fabric.
- Table 1 shows the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 3 except that the X-structure was formed by being inclined and connected to each other.
- Table 1 shows the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 6 except that the continuous relaxation heat-treated yarn of 280 decitex polyethylene terephthalate was used as the connecting yarn. Show.
- Example 8 Table 1 shows the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 1, except that the finishing method of the three-dimensional knitted fabric was 25% wide and a dry heat set was performed.
- Table 1 shows the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 3, except that the finishing method of the three-dimensional knitted fabric was performed without setting the width and performing the dry heat setting.
- Table 1 shows the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 1, except that the finishing process of the three-dimensional knitted fabric was performed without setting the width and using a dry heat set.
- L6 and L7 from the L5 and L7 guides to the 501 decitex 144-filament polyethylene terephthalate fiber false twisted yarn (Polyethylene terephthalate manufactured by Asahi Kasei Corporation) Fiber false twisted yarn 1 6 7 decitex 4 8 filament black dyed yarn, 3 All-in arrangement, from L6 guide to 204 decitex 576 filament, polytrimethylene terephthalate fiber false twisted yarn (manufactured by Asahi Kasei Corporation, trademark “Solo” temporary) Twisted yarn 1 6 7 decitex 4 8 Filament black dyed yarn , And 12 linings), and the 880 decitex polytrimethylene terephthalate monofilament manufactured from the two proofs (L3, L4), which form the connecting yarn, is used as a reference.
- L3, L4 decitex polytrimethylene terephthalate monofilament manufactured from the two proofs
- the L3 guide was supplied in a 2-inch 2-inch array, and the L4 guide was supplied in a 2-out 2-inch array.
- a three-dimensional knitted fabric was knitted at a density of 2.54 cm.
- the obtained greige was dry-heat-set at 150 ° C for 2 minutes with a width, and the insertion yarn was inserted in the weft direction and the warp direction of the back side knitted fabric, and all the connecting yarns were set in the front side knitted fabric.
- Stitches 2 2 ale away from the stitches on the back side opposite to the stitches were connected at an angle to obtain a three-dimensional knitted fabric forming an X structure.
- Table 1 shows the physical properties of the obtained three-dimensional knitted fabric.
- Embodiment 11 supplied from L 6 inserted in the vertical direction
- the physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 10 except that two fibers of 880 decitex polytrimethyl terephthalate monofilament were used for the fibers and the fibers to be inserted into the weft are shown in Table 1. Shown in 1.
- Table 1 Shown in 1.
- Example 11 Example 4 was carried out except that the fiber supplied from the L6 prong inserted in the vertical direction and the weft-inserted fiber used a four-strand alignment of 880 dtex polytrimethylethylene terephthalate monofilament.
- Table 1 shows properties of the three-dimensional knitted fabric obtained in the same manner as in Example 10. When evaluating the compression deflection characteristics of the three-dimensional knit, the periphery of the test piece of the three-dimensional knit was welded so that the insertion yarn in the horizontal direction did not slip.
- Table 1 shows the various physical properties of the solid knitted fabric obtained in the same manner as in Example 6 except that the knitting structure of the connecting yarn was changed to the following in Example 6 and the structure was such that all the connecting yarns were not inclined. .
- Table 1 shows various physical properties of the three-dimensional knitted fabric obtained in the same manner as in Example 6, except that 280 decitex polyethylene terephthalate monofilament (manufactured by Asahi Kasei Corporation) was used as the connecting yarn.
- Comparative Example 4 Same as Example 5 except that the distance between the hooks of the double Russell knitting machine was 5 mm, and the knitting structure of the connecting yarn was changed as follows, and all the connecting yarns were inclined over 1 ⁇ ale to form the X structure.
- Table 1 shows the physical properties of the three-dimensional knitted fabric obtained as described above.
- a three-dimensional knitted greige machine was knitted at a density of 14 courses of Z 2.54 cm.
- the obtained greige fabric is set at 40% width and dry heat set at 150 ° C for 2 minutes.
- the back and back knitted fabrics have a mesh structure, and all the connecting yarns are opposite to the stitches of the front side knitted fabric.
- the stitches 2 ⁇ ale away from the stitches were connected diagonally to obtain a three-dimensional knitted fabric having an X structure.
- Table 1 shows the physical properties of the obtained three-dimensional knitted fabric.
- the connecting yarn of the obtained three-dimensional knitted fabric was easy to fall in the length direction of the knitted fabric (the direction along the ale row).
- the three-dimensional knitted fabric of the present invention has an elastic cushioning property, has an excellent instantaneous compression recovery property, and is hardly damaged even when used repeatedly or for a long time. It has excellent durability. In particular, when used in a hammock-type seat, it shows a durable feeling of cushioning and a good fit to the human body, and even after repeated or prolonged sitting. Less sag and good shape retention. Furthermore, the three-dimensional knitted fabric of the present invention has good high-frequency vibration damping properties, and is suitable as a seat material to which vibration is applied, for example, a cushion material for a vehicle seat.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Of Fabric (AREA)
- Ceramic Products (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT02707264T ATE466983T1 (de) | 2001-03-29 | 2002-03-29 | Als sitzmöbel geeignetes dreidimensionales gewirk |
KR1020037012691A KR100549771B1 (ko) | 2001-03-29 | 2002-03-29 | 좌석 시트용 입체 편물 |
JP2002577956A JP4056885B2 (ja) | 2001-03-29 | 2002-03-29 | 座席シート用立体編物 |
DE60236300T DE60236300D1 (de) | 2001-03-29 | 2002-03-29 | Als sitzmöbel geeignetes dreidimensionales gewirk |
CA002442331A CA2442331C (en) | 2001-03-29 | 2002-03-29 | Three-dimensional fabric for seat |
EP02707264A EP1426473B1 (en) | 2001-03-29 | 2002-03-29 | Seat-use three-dimensional knit fabric |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001096126 | 2001-03-29 | ||
JP2001-96126 | 2001-03-29 | ||
JP2001-146914 | 2001-05-16 | ||
JP2001146914 | 2001-05-16 | ||
JP2001157723 | 2001-05-25 | ||
JP2001-157723 | 2001-05-25 |
Publications (1)
Publication Number | Publication Date |
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WO2002079558A1 true WO2002079558A1 (fr) | 2002-10-10 |
Family
ID=27346399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/003231 WO2002079558A1 (fr) | 2001-03-29 | 2002-03-29 | Tissu tricote tridimensionnel utilise pour un siege |
Country Status (10)
Country | Link |
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US (1) | US6644070B2 (ja) |
EP (1) | EP1426473B1 (ja) |
JP (1) | JP4056885B2 (ja) |
KR (1) | KR100549771B1 (ja) |
CN (1) | CN100523345C (ja) |
AT (1) | ATE466983T1 (ja) |
CA (1) | CA2442331C (ja) |
DE (1) | DE60236300D1 (ja) |
TW (1) | TW565638B (ja) |
WO (1) | WO2002079558A1 (ja) |
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JP2016013174A (ja) * | 2014-06-30 | 2016-01-28 | 株式会社ユニチカテクノス | 靴の中物 |
JP6074632B1 (ja) * | 2016-04-22 | 2017-02-08 | 藤井株式会社 | 中綿シート及びその製造方法 |
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JP2017193811A (ja) * | 2016-10-07 | 2017-10-26 | 藤井株式会社 | 中綿シート |
JP6128720B1 (ja) * | 2016-10-07 | 2017-05-17 | 藤井株式会社 | 中綿シート |
JP2019533592A (ja) * | 2016-10-18 | 2019-11-21 | 帝人株式会社 | クーリングファブリック |
JP7086062B2 (ja) | 2016-10-18 | 2022-06-17 | 帝人株式会社 | クーリングファブリック |
JP2020507020A (ja) * | 2017-02-24 | 2020-03-05 | ナイキ イノベイト シーブイ | サポート衣服 |
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JP2019143283A (ja) * | 2018-02-22 | 2019-08-29 | 東レ株式会社 | 布帛体 |
JP7305974B2 (ja) | 2018-02-22 | 2023-07-11 | 東レ株式会社 | 布帛体の製造方法 |
JP2019218675A (ja) * | 2018-06-18 | 2019-12-26 | ミュラー・テクスティール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | スペーサテクスタイルの使用、内張り材及びスペーサ編成布 |
JP7355527B2 (ja) | 2018-06-18 | 2023-10-03 | ミュラー・テクスティール・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | スペーサテクスタイルの使用、内張り材及びスペーサ編成布 |
Also Published As
Publication number | Publication date |
---|---|
CA2442331A1 (en) | 2002-10-10 |
KR20030092033A (ko) | 2003-12-03 |
EP1426473B1 (en) | 2010-05-05 |
ATE466983T1 (de) | 2010-05-15 |
DE60236300D1 (de) | 2010-06-17 |
CN1639403A (zh) | 2005-07-13 |
CA2442331C (en) | 2007-11-06 |
EP1426473A1 (en) | 2004-06-09 |
EP1426473A4 (en) | 2004-08-04 |
US20030033838A1 (en) | 2003-02-20 |
CN100523345C (zh) | 2009-08-05 |
US6644070B2 (en) | 2003-11-11 |
TW565638B (en) | 2003-12-11 |
JP4056885B2 (ja) | 2008-03-05 |
JPWO2002079558A1 (ja) | 2004-07-22 |
KR100549771B1 (ko) | 2006-02-08 |
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