JP2005330645A - Elastic fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastic top material which is compact and easy to deal with, light weight and not bulky, stably supporting limbs with comfortable sitting feeling in laying limbs on an elastic fabric stretched on the elastic top material 62. <P>SOLUTION: The elastic fabric 10 is formed by applying elastic yarn 11 to the fabric in a manner where the elastic yarn is in continue in either length direction h or width direction r of the fabric, wherein (1) stress F at 10% elongation of the fabric is st up 150≤F≤600 (N/5cm) in the direction X where the elastic yarn exists partly or in the whole width in a part or whole length of the yarn, (2) stress B at 10% elongation in the 45 degrees bias direction Z, where has an inclination of 45 degrees to the prolonging direction X is set up 5-20% of the stress F at 10% elongation in the prolonging direction X of the elastic yarn, (3) a rate of hysteresis loss ΔE in the prolonging direction X of the fabric is set up 20-45%. The elastic yarn has ≥60% of a breaking elongation and ≥90% of a rate of an elastic recovery after 15% elongation is applied. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a weight-supporting elastic face material (hereinafter simply referred to as “elastic face material”) used on a limb such as a pillow, a cushion, a stool, a backrest, an armrest, a chair, a seat, a bed, a mattress and the like. It is.

  This type of elastic face material is a flexible surface material such as fabric or leather on the outer surface of an elastic porous structure such as a polyurethane foam or other resin foam, or a fiber laminate in which polyester fibers or other fibers are laminated. Or the outer surface of a spring structure constructed by combining a leaf spring, a coil spring or other springs is covered with a flexible surface material such as fabric or leather.

  When a conventional elastic face material is placed on a limb, the elastic surface material feels moderate elasticity in the balance between the compressive strain generated in the thickness direction and the compression elastic recovery force generated according to the compressive strain. If there is too little compressive strain compared to the recovery force, it will feel hard and painful, and if there is too much compression strain compared to the compression elastic recovery force, it will make you feel unstable and tired. The elastic surface material is required to have a certain thickness as a result of having a moderate elasticity in the balance between the compressive strain generated in the thickness direction and the compression elastic recovery force. As a result, the conventional elastic surface material is required. Needs to be improved in that it is heavy and difficult to carry, is bulky and closes where it is, and when it is not in use, it becomes an obstacle.

As an elastic face material that is light and not bulky, it is formed by weaving a heat-fusible core-sheath composite polyether ester elastic yarn into at least one of the backgrounds and has a stress (F) (N / 5 cm) at 10% elongation. Research has been made on an interior seat sheet in which four sides of an elastic fabric of 150 ≦ F ≦ 600 (N / 5 cm) are tension-fixed to an iron frame (see, for example, Patent Documents 1 and 2).
JP 2001-159052 A JP 2001-303395 A

The elastic fabric having an elongation recovery rate at 15% elongation of 75% or more and a residual strain of 1% or less described in Patent Documents 1 and 2 described above is an elastic face material in that it has excellent durability (sag resistance). It can be said that it is preferable. However, it is not possible to obtain an elastic face material having pleasant elastic characteristics simply by saying that it is excellent in durability (settlement resistance). Therefore, in order to investigate the relationship between the durability and comfort of an elastic face material in which an elastic fabric is stretched between the support members constituting the frame and facing each other, the extension of continuous elastic yarns 10% elongation in the extending direction in which the elastic yarn extends even if the stress (F) (N / 5 cm) at 10% elongation of the elastic fabric in the direction is 150 ≦ F ≦ 600 (N / 5 cm) The integral value (V) of the load elongation relational expression (f ₀ (ρ)) represented by the pressurization curve (f ₀ ) of the hysteresis shown in the load elongation curve until the time, and the decompression curve of the hysteresis ( f ₁₎ load elongation relationship represented by the (f ₁ (ρ)) of the pressurization curve of the integrated value (W) hysteresis loss, expressed as the difference between the (C = V-W) by (f ₀₎ hysteresis loss to total load elongation relationship represented (f ₀ (ρ)) the integrated value of (V) Is less than 20%, the elastic property of the elastic fabric is similar to that of a metal spring, and the elasticity of the elastic fabric is improved, but the elastic fabric feels hard, while the hysteresis loss rate is 45. If the weight exceeds 50%, the elastic fabric will feel the bottom when the limb is placed, and the elastic fabric is difficult to recover when the placed limb is separated. The present invention has been completed by obtaining the knowledge that the marks on the limbs are likely to remain on the elastic fabric, and that it is difficult to obtain a cushion that has a good feel and is resistant to load history fatigue.

In the elastic fabric according to the present invention, (1) the elastic yarn (11) is applied to both the warp and the weft, and (2) the breaking elongation of the elastic yarn (11) is 60 (%) or more. The elastic recovery rate after 15% elongation is 90 (%) or more, and (3) the stress at the time of 10% elongation of the fabric in the direction (X) in which the elastic yarn (11) is continuous (F ) (Unit: N / 5 cm) is 150 ≦ F ≦ 600 (N / 5 cm), and (4) the elastic yarn (11) is a part of the width or part of the entire width or length of the elastic fabric or The load elongation relational expression (f ₀ ) represented by the hysteresis pressurization curve (f ₀ ) shown in the load elongation curve diagram up to 10% elongation in the extending direction (X) extending over the entire length. and ([rho) integral value of) (V), load represented by vacuum curve of the hysteresis (f ₁₎ Elongation relationship (f ₁ (ρ)) of the integrated value (W) the pressurization curve of hysteresis loss, expressed as the difference (C = V-W) and (f ₀₎ by the load elongation relationship represented The hysteresis loss rate (ΔE = 100 × C / V = 100 × (V−W) / V) in the integrated value (V) of the formula (f ₀ (ρ)) is 20 to 45% (20 ≦ ΔE ≦ 45). ).

  As described above, even when the stress (F) (N / 5 cm) at 10% elongation of the elastic fabric in the extending direction in which the elastic yarns are continuous is 150 ≦ F ≦ 600 (N / 5 cm). When the hysteresis loss rate is less than 20%, the elastic property of the elastic fabric approximates that of a metal spring, and the elasticity of the elastic fabric is improved. When the loss rate exceeds 45%, a feeling of bottoming is received from the elastic fabric when the limb is placed, and when the placed limb leaves the elastic fabric, it is difficult to restore the original shape, and the restoration of the original shape is delayed. Traces of placing the limbs due to load history fatigue are likely to remain on the elastic fabric, and it is difficult to obtain a cushion that has a good feel and a high load history fatigue resistance.

In the present invention, the stress (F) (N / 5 cm) at the time of 10% elongation of the elastic fabric in the extending direction in which the elastic yarns are continuous is set to 150 ≦ F ≦ 600 (N / 5 cm) and the elasticity Hysteresis loss rate (ΔE is 20 to 45% (20 ≦ ΔE ≦ 45) when the elastic fabric is stretched 10% in the yarn extending direction (X), so that the deposited weight is evenly distributed throughout the fabric. , Moderate dents according to body shape, no feeling of bottoming, no crimping, no fatigue of load history, and following the behavior of limbs when applied to elastic face materials An elastic fabric that stretches and contracts is obtained, and by fixing both edges to the two struts that protrude from the frame and face each other, the weight that has been deposited is stably supported, and it is thin and light and not bulky as a whole. Compact, easy to handle, comfortable and peaceful An elastic face material is obtained.
Hereinafter, the effects of the present invention will be specifically described while showing the best mode of the present invention.

  In a preferred embodiment of the present invention, the average fineness (T) (dtex / piece) of the elastic yarn (11) and the elastic yarn (11) are a part of the width of the elastic fabric or a total width or length. The number of elastic yarns (11) arranged on the fabric at a constant interval (L) (cm) in the orthogonal direction (Y) perpendicular to the extending direction (X) extending in a part or the entire length (M) (M ) Divided by a constant interval (L) of the fabric, the elasticity expressed as the product (T × G) of the arrangement density (G = M / L) (lines / cm) of the elastic yarn (11) shown The bulk density (J = T × G) (dtex / cm) of the yarn (11) in the fabric is set to 17000 dtex / cm or more (J = T × G ≧ 17000).

In another preferred embodiment of the present invention, the number of elastic yarns arranged on the fabric at a constant interval (L) in the direction (Y) perpendicular to the extending direction (X) of the elastic yarn (11) ( M) and the square root of the product (S × k) of the cross-sectional area (S) (cm ² ) and the coefficient k = 4 × π−1 of the elastic yarn arranged on the fabric at the constant interval (L). The coverage ratio of the elastic yarn (11) expressed by dividing the product (M × D) of the average diameter (D) (cm) of the elastic yarn (11) shown by the constant interval (L) ( K) is set to 30% or more (K = 100 × M × D / L ≧ 30%).

  When the elastic fabric (10) is woven with warp and weft, the elastic yarn (11) is used for both the warp and the weft, but the non-elastic yarn (22) is used for a part of both the warp and the weft. You can also The weaving structure constituting the elastic fabric is a change-striated texture structure such as a Yamagata oblique pattern, a reticulated oblique pattern, a Sugaya oblique pattern, a staggered oblique pattern, or the like having a zigzag or radial direction in which the connecting points (20) are continuous. = P / m) is less than 0.5, such as twill weave (Namiko, Nanako, fish, weft slope), irregular twill weave (irregular twill, ornamental twill), joint twill weave, etc. A changed plain weave structure is preferable (FIG. 3).

  The elastic fabric (10) woven with the warp and the weft has an elastic yarn (11) and a cross yarn (22) (non-elastic yarn) at the junction ( 20) The number (P) of bending points (p-1, p-2, p-3, p-4,...) That bend before and after and change the arrangement to the front side or the back side of the elastic fabric (10). The structure ratio (H = P / m) expressed by dividing the number (m) of crossed yarns 22 constituting one completeness (A) is 0.5 or less (H = P / m ≦ 0. 5) is preferably designed (FIG. 4). Further, the elastic fabric (10) woven with warp and weft has a product (H × K) of the texture ratio (H) and the coverage ratio (K) of the elastic yarn (11) of 0.1 or more ( It is desirable to design such that H × K ≧ 0.1).

  Furthermore, the elastic fabric (10) woven with the warp and the weft has the cross yarn (22) in which the bulk density (J) (dtex / cm) of the elastic yarn (11) is orthogonal to the elastic yarn 11. It is desirable that the bulk density (j) (dtex / cm) is designed to be 0.5 to 3.0 times (0.5 × j ≦ J ≦ 3.0 × j). Here, the bulk density (J) of the elastic yarn is arranged within the average fineness (T) (dtex) of the elastic yarn and a constant interval (L) (cm) in the orthogonal direction (Y). The product (T × G) of the arrangement density (G = n / L) (lines / cm) of the elastic threads (11) expressed by dividing the number (n) of the elastic threads by the constant interval (L) Calculated as Similarly, the bulk density (j) of the cross yarn (22) is determined by the average fineness (t) (dtex) of the cross yarn (22) and the orthogonal direction (X) of the cross yarn, that is, the elastic yarn. The number (m) of crossed yarns (22) arranged in a constant interval (L) (cm) in the extending direction (X) of (11) is divided by the constant interval (L). It is calculated as the product (t × g) with the arrangement density (g = m / L) (lines / cm).

  The elastic face material (62) spans the elastic fabric (10) supporting the limb between a pair of support materials (61a) and the support material (61b) which protrude from the frame (60) and face each other at a predetermined interval. Composed. The cushion surface (63) that supports the limb is constituted by an elastic fabric (10). In the elastic fabric (10), the extending direction (X) of the elastic yarn (11) incorporated in the elastic fabric (10) is the direction in which the support material (61a) and the support material (61b) face each other, that is, the width of the elastic surface material. Set in the frame (60) in the direction.

  The stress F at the time of 10% elongation in the extending direction (X) of the elastic yarn is 150 ≦ F ≦ 600 (N / 5 cm), and 10 in the 45-degree bias direction Z inclined 45 degrees from the extending direction (X). The stress at the time of% elongation is 5% or more and 20% or less of the stress F at the time of 10% elongation in the extending direction (X), and 10% in the extending direction (X) of the elastic yarn. The elastic fabric is designed so that the hysteresis loss rate ΔE is 20 to 45%. The elastic fabric protrudes from the frame (60) and is fixed to the two supporting members (61a, 61b) facing each other, and spanned to create the elastic face material (62). When the elastic face material (62) is created in this manner, the elastic fabric bends in an arcuate shape in the extending direction (X) of the elastic yarn (11) in a state where the limb is placed on the elastic fabric. At the same time, the elastic fabric bends in an arcuate direction (Y) perpendicular to the extending direction (X) of the elastic yarn (11), and the weight of the placed limb is dispersed in all directions and deformed into a suitable shape. To do. For this reason, when the limbs leave without feeling the hardness from the elastic fabric, the elastic fabric easily recovers its original shape, and even if the limbs are placed for a long time, the marks of the limbs remain on the elastic fabric. Absent.

  When the stress (F) at the time of 10% elongation is less than 150 N, the elastic fabric sinks greatly in the state where the limb is placed, and the feeling of lateral pressure received from the periphery of the sinking elastic fabric increases. Even if the placed limbs are separated, the elastic fabric is difficult to recover its original shape. Due to the load history fatigue that is delayed in the restoration of the original shape, a mark on the limb is easily left on the elastic fabric. On the other hand, if the stress (F) at the time of 10% elongation exceeds 600 N, the hardness received from the elastic fabric on which the limbs are placed is large, and it becomes impossible to withstand placing the limbs for a long time. In the present invention, the hysteresis loss rate ΔE at the time of 10% elongation is set to 20 to 45%. When the hysteresis loss rate ΔE is less than 20%, the elastic property of the elastic fabric approximates that of a metal spring. This is because the elasticity of the elastic fabric is improved, but the elastic fabric makes it feel hard. On the other hand, if the hysteresis loss rate ΔE at 10% elongation exceeds 45%, you will feel the bottom of the elastic fabric when you put the limb, and the elastic fabric will recover its original shape when the placed limb leaves However, it is difficult to obtain a cushion having a good feel and high load history fatigue resistance because the trace of placing the limb on the elastic fabric is likely to remain on the elastic fabric due to load history fatigue that is delayed in its original shape recovery. Considering these points, the elastic fabric is designed so that the stress F at 10% elongation is 200 to 400 (N / 5 cm) and the hysteresis loss rate ΔE at 10% elongation is about 25%.

The hysteresis loss rate ΔE in the present invention is represented by a hysteresis pressurization curve (f ₀ ) shown in a load elongation curve diagram up to 10% elongation in the extending direction (X) of the elastic yarn (11). The integral value (W) of the load elongation relational expression (f ₁ (ρ)) represented by the integral value (V) of the load elongation relational expression (f ₀ (ρ)) and the decompression curve (f ₁ ) of the hysteresis. ) And the hysteresis loss (C) expressed as the difference from the calculated value by dividing the hysteresis loss (C) by the integral value (V) of the load elongation relational expression (f ₀ (ρ)) expressed by the pressurization curve (f ₀ ). The More specifically, the hysteresis loss rate ΔE at the time of 10% elongation of the elastic fabric is as follows: (1) A test piece of width 50 mm × length 250 mm cut out from the elastic fabric has a grip allowance interval of 150 mm and a load elongation rate of 150 mm / Set the initial load (F ₀ ) at the start of measurement to a load / elongation measuring test machine adjusted to 4.9 N. (2) Pre-extension by applying load until the test piece reaches 10% elongation (3) Deweight until it returns to the initial load (F ₀ ) for conditioning. (4) After that, when applying the load until the specimen reaches 10% elongation, the elongation display coordinate axis (Xρ) and the load The pressurization curve (f ₀ ) drawn on the orthogonal coordinates (FIG. 5) with the display coordinate axis (Y _F ), and the elongation (ρ) of the test piece reached 10% in the pressurization curve (f ₀ ) 10 Through the% elongation load point (F ₁₀ ), the elongation display coordinate axis (X The elongation display coordinate axis (Xρ) passing through the straight line (F ₁₀ −ρ ₁₀ ) orthogonal to ρ) and the starting point of the pressure curve (f ₀ ), that is, the load / elongation 0 point (F ₀ · ρ ₀ ). The depressurization is performed until the pressure history area (V) of the enclosed portion and the elongation (ρ) of the test piece reach 10% from the 10% elongation load point (F ₁₀ ) to the initial load (F ₀ ). The decompression curve (f ₁ ) drawn on the orthogonal coordinates, the straight line (F ₁₀ −ρ ₁₀ ) orthogonal to the elongation display coordinate axis (Xρ) through the 10% elongation load point (F ₁₀ ), and the elongation The hysteresis loss (C) calculated as the difference (V−W) from the decompression history area (W) of the portion surrounded by the degree display coordinate axis (Xρ) is divided by the pressurization history area (V). Is done.

  The stress (B) at the time of 10% elongation in the 45-degree bias direction Z inclined 45 degrees from the extending direction (X) of the elastic yarn (11) is the stress F at the time of 10% elongation in the extending direction (X). It is good to make it 5% or more and 20% or less. The reason is as follows. That is, when the stress (B) in the bias direction becomes less than 5% of the stress (F) in the extending direction (X) of the elastic yarn (11), the deformation of the knitted or woven structure of the elastic fabric, that is, Deviations in the knitting yarns and woven yarns (11, 22) constituting the elastic fabric, so-called stitches and stitches in the stitches are increased, and the recovery of the original shape of the elastic fabric when the placed limbs are separated is delayed. On the other hand, when the stress (B) in the bias direction exceeds 20% of the stress (F) in the extending direction (X) of the elastic yarn (11), it becomes difficult for the stitches or the stitches to be misaligned, The weight of the placed limb is not dispersed in all directions, the depression corresponding to the weight cannot be made in the elastic fabric, and the limb will be supported in an unstable state that is easy to move, so the elastic fabric is hard and feels bad Become a thing.

  The bulk density (J = T × G) of the elastic yarn (11) is set to 17000 dtex / cm or more. The reason is as follows. That is, the elastic yarns constituting the elastic fabric are arranged side by side so that they touch each other, and the elastic yarns do not expand and contract independently of each other, but are adjacent to each other. When an elongation stress acts on one, it propagates to other adjacent elastic yarns (11) and expands and contracts. In that way, the weight is distributed sequentially to a number of adjacent elastic yarns. Therefore, only a limited part of the elastic yarn (11) does not cause misalignment. Therefore, a large number of elastic yarns constituting the elastic fabric are dispersed to such an extent that they cannot cause irreversible deformation in the woven or knitted structure of the elastic fabric, thereby causing slight misalignment. By doing so, the elastic fabric can easily recover its original shape elastically when the placed limbs are separated, and the elastic fabric has a load history fatigue resistance to the extent that no trace remains even if the limbs are placed for a long time. It will be rich. Considering these points, the bulk density (J) of the elastic yarn (11) is set to 17000 dtex / cm or more, and by doing so, when the elastic yarn (11) is stretched by 10% in the extending direction (X). The stress (F) is 150 (N / 5 cm) or more and 600 (N / 5 cm), and the stress (B) at 10% elongation in the 45-degree bias direction (Z) is the elastic yarn. The stress (F) at the time of 10% elongation in the extending direction (X) of the strip is 5% or more and 20% or less. If it does so, it will become easy to set hysteresis loss rate (DELTA) E at the time of 10% expansion | extension in the extending direction (X) of an elastic thread | yarn (11) to 20-45%.

  For the same reason, the coverage (K) of the elastic yarn (11) is set to 30% or more. In particular, when the coverage (K) of the elastic yarn (11) is set to 30% or more, a large number of densely arranged elastic yarns are crossed yarns ( 22), the cross yarn (22) is urged to elongate (tension) like a wedge driven into the array of cross yarns (22). For this reason, the weight is easily dispersed from the adjacent elastic yarn to the elastic yarn through the cross yarn (22). As a result, the elastic fabric is easily elastically deformed according to the placed limbs, and it is easy to obtain an elastic fabric that has a good feel and a high load history fatigue resistance.

  The elastic yarn (11) is intermittently / or continuously over the entire width in a part of the width of the elastic fabric (10) or intermittently / or continuous over the entire length of a part of the length of the elastic fabric (10). Then, the elastic fabric (10) is woven / or knitted so as to extend in a straight line. In order to easily maintain the state in which the elastic yarns are arranged in a straight line, the fineness (T) of the elastic yarns is increased (thicker), the arrangement density (G) is increased, and the product thereof is obtained. The expressed bulk density (J) is preferably 17000 dtex / cm or more. In order to easily maintain the state in which the elastic yarn is arranged in a straight line, it is desirable that the elastic yarn is a monofilament yarn. Even if the elastic yarn is constituted by a large number of fibers such as a multifilament yarn, the number of the fiber yarns (single yarns) is 5 or less. That is, the elastic yarn is constructed in a fashion that several thick monofilament yarns are aligned. The elastic yarn may have a core-sheath structure in which an elastic fiber is used as a core, an inelastic fiber is used as a sheath, and the elastic fiber is covered with a non-elastic fiber.

  In the elastic yarn having a core-sheath structure, the non-elastic fiber that is the sheath component is made of a heat-fusible polymer, and is heat-sealed to another yarn intersected by the elastic yarn. In order to heat-seal to other yarns where the elastic yarn intersects, the heat-fusible core-sheath composite fiber yarn having a sheath component as a heat-fusible polymer is attached to the other yarns that intersect. Articles can also be used. That is, the heat-sealable core-sheath composite fiber yarn can be used for both the elastic yarn and the non-elastic yarn.

1 to 3 exemplify a woven or knitted structure of an elastic fabric.
In the elastic fabric shown in FIG. 1, the non-elastic yarn (crossed yarn) (13) forms a base warp knitted fabric, and the elastic yarn (11) is inserted into each course, and the elastic yarn. Passes between the knit loop (40) and the sinker loop (50) and continues in a straight line in the course direction (Γ). In the elastic fabric shown in FIG. 3, the inelastic yarn (13x) forms a chain stitch row straight in the wale direction, and the adjacent chain stitch row and the chain stitch row are inserted into the inelastic yarn insertion yarn (crossed yarn). ) (22a) to form a base warp knitted fabric, and the elastic yarn (11) is inserted between the adjacent chain stitch row (39) and the chain stitch row (39) and next to it. Over the insertion yarn (22a) connecting the chain stitch row and the chain stitch row, which passes between every other course, and passes under the insertion yarn (22a) and goes straight in the wale direction (Σ) It is continuous.

  In the elastic fabric having a knitted structure, as shown in FIGS. 1 to 2, it is preferable to apply the non-elastic yarn to all of the cross yarns (22) intersecting with the elastic yarn (11) continuous in a straight line. Moreover, as shown in FIGS. 1-2, an elastic thread | yarn (11) can be arrange | positioned in a straight line form in the vertical and horizontal directions of the elastic fabric which becomes a knitted structure. In the elastic fabric having a woven structure, the elastic yarn (11) may be applied to the weft yarn and the non-elastic yarn may be applied to the warp yarn, that is, the cross yarn (22), from the viewpoint of ease of weaving. FIG. 3 illustrates an elastic fabric woven by applying an elastic yarn to a weft and an inelastic yarn to a warp.

The elastic fabric made of knitted fabric has a base knitted fabric made up of a knit loop and a sinker loop in which yarns are bent in a circle. The shape of the knit loop (40) and sinker loop (50) stretches vertically and horizontally. Deformable. For this reason, the stress (B ₁ ) at 10% elongation in the left 45 ° bias direction (Z ₁ ) inclined 45 ° to the left with respect to the extending direction (X) of the elastic yarn, and 45 ° inclined to the right No significant difference was observed between the stress (B ₂ ) at the time of 10% elongation in the right 45 ° bias direction (Z ₂ ), and the weight acting on the elastic fabric was equally distributed in all directions of the elastic fabric. Easy to disperse. However, the elastic fabric comprising the woven tissue, and at 10% elongation stress of at Seyyuiten left 45-degree bias direction by a succession of how (20) (Z ₁₎ in the weave (B _1), the right 45 The difference which arises with the stress (B ₂ ) at the time of 10% elongation in the degree bias direction (Z ₂ ) becomes large. For this reason, due to the difference in stress when the left 45 ° bias direction (Z ₁ ) and right 45 ° bias direction (Z ₂ ) are stretched by 10%, the elastic fabric having the woven structure is compared with the elastic fabric having the knitted structure. This makes it easier to fatigue the load history. In order to reduce the stress difference, a satin weave structure having no directivity in the arrangement of the connection points may be adopted for the elastic fabric. However, in the satin weave structure, there is little adhesion (bonding) between the warp and the weft and the stress between adjacent elastic yarns is difficult to disperse, so that the load resistance fatigue resistance of the elastic fabric is impaired.

Therefore, the elastic fabric having a woven structure has a zigzag pattern in which the continuous direction (R) of the connecting points (20) is zigzag or radial, a reclined striated texture such as a reticulated striated pattern, a netted striated pattern, a Sugiya striated pattern, or a staggered striated pattern, or Twill weave (Namiko, Nanako, Fish, Seicho) with irregularity ratio (H = P / m), 0.5 Adopt a change plain weave structure such as weaving. As a result, the connection point (20) continues in the same direction in both the left and right diagonal directions with respect to the extending direction (X) of the elastic yarn (11). The connection point (20) in the bias direction (Z ₁ ) to the left with respect to the extending direction (X) of the elastic yarn (11) is maintained, and the right 45 degrees The manner in which the connecting points 20 are continued in the bias direction (Z ₂ ) becomes uniform. Therefore, a large difference does not occur in the stress (B) at the time of 10% elongation in these directions (Z ₁ and Z ₂ ), and the load history fatigue resistance of the elastic fabric having the woven structure is increased.

  In order to increase the load bearing history fatigue resistance of the elastic fabric, the crossover yarn (22) crossing the elastic yarn is made to have an elastic yarn (11) covering ratio (K) of 30% or more. Are stretched by elastic yarns (11a, 11b, 11c...) Between the connection point (20m) and the connection point (20n), and elastic yarn ( 11a, 11b, 11c...) Are attracted and brought into close contact between the connecting point (20m) and the connecting point (20n) so that the displacement between the elastic yarns is minimized. However, when the coverage (K) of the elastic yarn (11) is set to 30% or more, the fineness (thickness) of the elastic yarn is thickened beyond a certain limit defined in relation to the woven density. In addition, undulation wrinkles (crimps) may occur in the elastic fabric, and it may be impossible to obtain an elastic fabric rich in load-bearing history fatigue.

  The reason for this will be explained. In the woven fabric, when the warp density is made dense, each of the plurality of warps (22a, 22b, 22c,...) Constituting one complete (A) of the woven structure is The width of arrangement between the connecting point (22a) and the connecting point (20b) formed by the wefts (elastic yarns) (11) intersecting with the warp yarns (11) together with the warp yarns (22a, 22b, 22c...) It is in a state of being constrained by the wefts (11) that intersect so as not to spread. On the other hand, the weft (11) is densely arranged between the connection point (22a) and the connection point (20b), and a plurality of warp yarns (22a, 22b, 22c... In response to the reaction force from…), I will be in a state of tension. In a woven fabric having a dense warp density, a tension state of the weft (11) between the connection point (22a) and the connection point (20b) and a plurality of warps (22a, 22a, 22b, 22c) is kept in balance with the arrangement state, and the flat state of the fabric is maintained. When the number of warp yarns (22a, 22b, 22c) arranged between the connection point (22a) and the connection point (20b) increases beyond a certain limit, the weft yarn (11) is formed inside the fabric. As a result of being in an excessively tensioned state, a shrinkage stress is generated inside the fabric to return to a predetermined length corresponding to the number of predetermined warps (crossed yarns) (22a, 22b, 22c), and the weft (Elastic yarn) (11) is pulled and warp yarns (crossover yarns) (22a, 22b, 22c) are also arranged by two connection points (22a) and connection points (20b) In order to maintain the width, a part of the warps (crossed yarns) (22) protrudes from the array in the thickness direction of the fabric or overlaps, so that the fabric surface is raised. As described above, when the woven fabric is densified beyond a predetermined warp density according to the thickness of the warp (22), the weft (elastic yarn) (11) is pulled to cause crimping, and some warp ( 22) oozes out of the warp array, and waviness is generated on the surface of the fabric, and the surface of the fabric is not maintained flat. The same applies to the case where the weft density is increased beyond the limit corresponding to the thickness of the weft (11).

  The reason why the elastic yarn has a structure ratio (H) of 0.5 or less is that the cross yarn (22) crossing the elastic yarn (11) is connected to the connecting point (20m) constituting the elastic yarn. This is because the elastic yarn is not excessively stretched between the connection points (20n), and the elastic fabric is prevented from being wrinkled. That is, when the texture ratio (H) of the elastic yarn is 0.5 or more, the warp (22) perpendicular to the elastic yarn is connected to the weft (elastic yarn) (11) and the connecting point (20). This is a case where the frequency of construction is low, and the warp (22) is more than the upper surface of the elastic yarn (11) and is raised on the surface of the elastic fabric. If the protruding length (U) is long, the warp yarn (22) by a plurality of elastic yarns (11a, 11b, 11c,...) Included between the connecting point (20m) and the connecting point (20n). Elongation effect on is reduced. However, in that case, a plurality of elastic yarns (11a, 11b, 11c,...) Included between the connection point (20m) and the connection point (20n) are also included in the cross yarn (22). The elastic yarns are not strongly bound by each other, the spaces between the elastic yarns become free, and the weight placed on the elastic fabric becomes difficult to propagate from the adjacent elastic yarns (11) to the elastic yarns (11).

Therefore, in order to further enhance the load history fatigue resistance of the elastic fabric, (1) the cross yarn (22) orthogonal to the extending direction (X) of the elastic yarn (11) in the complete woven structure (A) is provided. Bending points (p-1, p-2, p-3) which are bent before and after the connecting point (20) formed by intersecting with the elastic yarn (11) to change the arrangement to the front side or the back side of the fabric , p-4...) divided by the number (m) of crossed yarns (22) constituting the completeness (A) (H = P / m) ) Is 0.5 or less (H = P / m ≦ 0.5), and (2)
The product (H × K) of the texture ratio (H) and the cover ratio (K) of the elastic yarn (11) is set to 0.1 or more (H × K ≧ 0.1). More preferably, the bulk density (J) (dtex / cm) of the elastic yarn (11) is equal to the bulk density (j) (dtex / cm) of the cross yarn (22) perpendicular to the elastic yarn (11). 0.5 to 3.0 times (0.5 × j ≦ J ≦ 3.0 × j). Here, the bulk density (J) of the elastic yarn is arranged within the average fineness (T) (dtex) of the elastic yarn and a constant interval (L) (cm) in the orthogonal direction (Y). It is calculated as the product (T × G) of the number of elastic yarns (n) divided by the fixed interval (L) and the arrangement density of elastic yarns (G = n / L) (lines / cm). The Similarly, the bulk density (j) of the crossed yarn (22) is equal to the average fineness (t) (dtex) of the crossed yarn (22) and its orthogonal direction (X), that is, the elastic yarn (11). Arrangement density (g) obtained by dividing the number (m) of crossed yarns (22) arranged in a constant interval (L) (cm) in the extending direction (X) by the predetermined interval (L). ) (G = m / L) (lines / cm) as a product (t × g).

  The product (H × K) of the texture ratio (H) of the elastic yarn (11) and the cover ratio (K) of the elastic yarn (11) is 0.1 or more because the weight deposited on the elastic fabric is This is to facilitate dispersion from the adjacent elastic yarn (11) to the elastic yarn (11). By setting the product (H × K) of the texture ratio (H) of the elastic yarn and the cover ratio (K) of the elastic yarn to 0.1 or more (H × K ≧ 0.1), the elasticity of the adjacent yarn The yarns (11, 11) are not extremely tightly bound by the cross yarns (22), but the adjacent elastic yarns (11, 11) are in close contact with each other so that the weight is dispersed throughout the elastic fabric. In addition, the elastic fabric can be prevented from being crimped by the shrinkage stress generated in the cross yarn (22).

The organization rate (H) of the elastic yarn may be different for each of the plurality of elastic yarns constituting one completeness (A) of the woven fabric. In that case, the average value of the texture ratio (H) of each elastic yarn is 0.5 or less, and the product of the average value (H) and the cover ratio (K) is 0.1 or more. . When several types of elastic yarns having different fineness are used, the average diameter (D) of the elastic yarn (11) is the sum of the diameters (D _n ) of these several types of elastic yarns (D ₁ + D ₂ + D ₃ + ... + D _n ) divided by the number of those types.

  The bulk density (J) (dtex / cm) of the elastic yarn (11) is 0.5 to the bulk density (j) (dtex / cm) of the cross yarn (22) orthogonal to the elastic yarn (11). The reason why the magnification is 3.0 times (0.5 × j ≦ J ≦ 3.0 × j) is to maintain the balance between the warp and weft arrangement of the elastic fabric as the fabric and to stabilize the shape of the fabric. . The ratio (J / j) of the bulk density (J) of the elastic yarn (11) and the bulk density (j) of the cross yarn (22) is preferably 1.0 to 2.5, more preferably about Set to 1.0.

  In order to hold the elastic yarn (11) in a straight line, the fineness (t) of the cross yarn (22) crossing the elastic yarn (11) is made smaller (thinner) than that of the elastic yarn (11). The arrangement density (g) of the cross yarn (22) is made dense, and the ratio of the bulk density (J) of the elastic yarn (11) to the bulk density (j) of the cross yarn (22) (J / j ) To 0.5-3.0. In order to keep the elastic yarn (11) in a straight line, a multifilament yarn composed of a large number of fibers such as a multifilament yarn or a spun yarn is used as the cross yarn (22). It is good to apply. In particular, when the multifilament yarn is applied to the cross yarn (22), the cross yarn (22) is between the connection point (20m) and the connection point (20n) where the cross yarn (22) crosses the elastic yarn (11). Even if the number of elastic yarns (11) included is large and the cross yarn (22) is put in a tensioned (elongated) state by the elastic yarn (11) interposed between them, the cross yarn forming an inelastic fiber. In (22), since the shrinkage stress that is potentially generated by being woven into the elastic fabric gradually relaxes and disappears with the passage of time, the potential shrinkage stress generated in the cross yarn (22) is elastic. It does not act to generate creases (crimps) on the fabric. Therefore, in order to ensure the shape stability of the elastic fabric, a multifilament yarn may be applied to the cross yarn (22).

  The elastic yarn (11) has a fineness of 500 dtex or more, preferably 1100 dtex or more, more preferably 1650 to 3000 dtex, and a stress at 10% elongation of 0.1 cN / dtex or more, preferably 0.3 to 0. A thick monofilament elastic yarn of .8 cN / dtex is used, and the elastic yarn (11) is knitted without stretching to the left in the knitting process.

  Depending on how the elastic fabric (10) is stretched and how the weight is applied to the elastic fabric (10), the elastic fabric (10) is partially depressed or a strong reaction force is locally applied from the elastic fabric (10). May be subject to In order to eliminate such an inconvenience, the elastic fabric (10) has a double structure of a front fabric (32) as a front yarn (31) and a back fabric (34) as a back yarn (33). The elastic yarn (11) may be applied to at least a part of the back yarn (33).

  Then, the elongation rate of the elastic yarn (back yarn) of the back fabric is suppressed by the front fabric that becomes the non-elastic yarn, and the elastic face material does not stretch locally or become deeply depressed to give a feeling of bottoming. A double elastic surface material suitable for the outer surface of a sofa or mattress can be obtained.

In order to make the elastic fabric (10) have a double structure, a front cloth (32) and a back cloth (34) are simultaneously woven and knitted by a loom or a knitting machine, and a part of the front yarn is part of the back cloth. The elastic fabric (10) is formed by entanglement with a part of the front fabric or part of the back yarn. In the case of a loom, a double elastic fabric can be woven by a normal loom as a background double fabric.
FIG. 9 shows a double elastic fabric woven by a double moquet loom. The front warp (31y) and the front weft (31x), and the back warp (33y) and the back weft (33x) are respectively plain weave structures. The front cloth (32) and the back cloth (34) are formed, and the gap layer (36) is formed by the connecting thread (35) connecting them.

  When the bag-like gap is formed between the front cloth (32) and the back cloth (34) with a gap layer (36) having a layer thickness of 0.3 m / m or more, the heat insulation and heat insulation of the double elastic cloth (10) is enhanced. At the same time, every time the double elastic fabric (10) is pressed, the air inside the void layer (36) permeates through the front cloth (32) and the back cloth (34), so the double elastic cloth (10). Can be used for the elastic face material (62) to give a feeling of stuffiness and a sofa or mattress excellent in cushioning properties.

  In particular, in the case where the elastic yarn (11) is used for the connecting yarn (35), the void layer (36) between the front fabric (32) and the back fabric (34) is not easily crushed, and does not give a feeling of stuffiness. Excellent cushioning and ideal for sofas and mattresses.

  The cushion surface of the elastic face material (10) is a flat plate. When placing a limb on a cushion surface that is tensioned and stretched, the cushion surface is opposite from the cushion surface as in the case of placing the limb on a hard plate. The force concentrates on the limbs and feels painful, making it difficult to stand for a long time.

  In this regard, in the present invention, the yarn continuation in at least two portions separated in the yarn orthogonal direction perpendicular to the yarn continuous direction in which any yarn woven and knitted into the elastic fabric is continuous. The elongation stress of the elastic fabric at the time of elongation differs from the required elongation acting on the elastic fabric in the direction. That is, even if the cushion surface is a flat plate, the elasticity of the cushion surface is partially changed so that the portion where the weight acts strongly is greatly depressed locally and the portion where the weight does not act as much as the left portion is hardly depressed. Then, the cushion surface is deformed according to the undulations of the limbs and fits to the limbs. As a result, when the limb is placed, the reaction force received from the cushion surface is evenly distributed and acts on the limb, and even if the limb is placed on the cushion surface for a long time, there is no pain and it is comfortable to sit on An elastic face material (10) is obtained.

  Here, the “elongation stress of the elastic fabric when stretched to the required elongation (hereinafter referred to as constant elongation strength)” refers to the elongation required to compare the stretch elasticity of different parts of the cushion surface. It means the elongation stress acting on the elastic fabric when it is reached. With respect to the constant elongation strength, each part of the cushion surface until it reaches a predetermined elongation within a range of 3% to 10% under the pressing load when each part of the cushion surface to be compared for stretch elasticity is received. The pressing load acting on the pressure is gradually increased, and the pressing load at the time when the predetermined elongation rate is reached is set as the constant elongation strength, thereby comparing the stretch elasticity of each part.

"At least two parts that are separated in the direction perpendicular to the yarn continuous direction perpendicular to the yarn continuous direction in which any of the yarns woven and knitted are continuous"
(1) In an elastic fabric composed of only warp yarns (18) continuous in the length direction (h) of the fabric, such as a warp knitted fabric, two portions separated in the width direction (r) of the elastic fabric ( r-1, r-2), that is, at least two of a part (r-1) constituted by a certain warp (18a) and a part (r-2) constituted by another warp (18b) Means two sites (r-1, r-2) (see FIG. 10).
(2) Consists of warp yarn (18) continuous in the length direction (h) of the fabric and a weft yarn (19) continuous in the width direction (r) of the fabric, such as a warp knitted fabric or woven fabric In the elastic fabric, two portions (r-1, r-2) separated from each other in the width direction (r) of the elastic fabric and the length direction of the elastic fabric (r-1, r-2) ( h) two parts (hr-1, hr-2) separated from each other and two parts out of a total of four parts (r-1, r-2, hr-1, r-2), that is, warp (18) and the weft (19) mean different parts (see FIG. 12).

As shown in FIG. 12, in order to partially change the constant elongation strength of the elastic fabric, several types of yarns are woven and knitted into the elastic fabric by dividing the yarn into any direction orthogonal to the background for each type. Good.
That is, at least two types of yarns are woven and knitted separately in two directions perpendicular to the background for each type, and perpendicular to each yarn continuous direction in which the two types of yarns are continuous. In each yarn orthogonal direction, in each yarn continuous direction in at least two portions that are separated from each other, the elongation stress of the fabric at the time of elongation differs from the required elongation acting on the fabric.

  In the present invention, “two types of yarns are woven and knitted separately in two directions perpendicular to the background for each type, and perpendicular to each yarn continuous direction in which the two types of yarns are continuous. "At least two parts separated in the direction orthogonal to each thread" means warp continuous in the length direction (h) of the fabric such as a weft insertion warp knitted fabric or fabric as shown in FIG. In an elastic fabric constituted by two types of yarns (18) and a weft yarn (19) continuous in the width direction (r) of the fabric, two portions separated in the width direction (r) of the elastic fabric (R-1, r-2) and two parts (hr-1, hr-2) separated from those parts (r-1, r-2) in the length direction (h) of the elastic fabric A total of four sites (r-1, r-2, hr-1, hr-2) This means that the type of either the warp yarn (18) or the weft yarn (19) constituting the yarn is changed.

  More specifically, in the present invention, “parts having different constant elongation strength” mean locations that are separated in a direction orthogonal to the direction of action of the constant elongation strength.

In the warp knitted fabric and the warp insertion warp knitted fabric shown in FIGS. 1 and 2, “parts having different constant elongation strength” can selectively weave different types of yarns, and the type of the selected yarns This means different parts of the knitting wales (σ1, σ2, σ3, σ4, σ5,...) That can change the constant elongation strength according to.
Therefore, one continuous warp knitted fabric or one continuous sheet between the support member (61a) and the support member (61b) with the wale direction (Σ) aligned with the width direction (i) of the elastic face material shown in FIG. When the entire warp insertion warp knitted fabric (FIG. 2) is stretched to constitute the entire cushion surface (74), the width direction of the elastic face material ( The constant elongation strength acting on i) can be changed for each part having a different position in the depth direction (q) of the elastic face material.

  In the weft insertion warp knitted fabric illustrated in FIG. 1, “parts having different constant elongation strength” can selectively knit different types of yarn, and the constant elongation strength can be selected according to the type of the selected yarn. Different knitting wales (σ1, σ2, σ3, σ4, σ5 ...) that can change the thread, and different types of yarn can be inserted in a straight line, and the type of yarn selected It means either one or both of the different parts of the knitting course (φ1, φ2, φ3, φ4, φ5...) That can change the constant elongation strength according to. Therefore, one continuous weft insertion warp knitted fabric knitted by selectively arranging several types of warp knitting yarns having different elastic elasticity on different wales (σ1, σ2, σ3, σ4, σ5...) (FIG. 1). ) Is stretched between the support material (61a) and the support material (61b) with the wale direction (Σ) aligned with the width direction (i) of the elastic surface material shown in FIG. 13, and the entire cushion surface (74). , The constant elongation strength acting in the width direction (i) of the elastic face material is set to the depth direction (q of the elastic face material (62) so that the difference in constant elongation strength forms the transverse stripe (75). ) Can be changed for each part having a different position. In addition, in the process of knitting the base warp knitted fabric, weft insertion warp knitted fabric in which several types of wefts having different elastic elasticity are selectively inserted and knitted for every course of the base warp knitted fabric or for each required course (see FIG. In 1), the depth direction (q) of the elastic surface material is formed so that a lattice figure is formed by crossing the horizontal bars (75) due to the difference in constant elongation strength and the vertical bars (76) due to the difference in constant elongation strength. The constant elongation strength in both the depth direction (q) and the width direction (i) can be changed for each part having a different position in each direction of the width direction (i). Of course, in the weft insertion warp knitted fabric (FIG. 1) in which several kinds of yarns having different elastic elasticity only for the weft are selectively applied to different knitting courses (φ1, φ2, φ3, φ4, φ5...) The elastic face material is formed so that the longitudinal bars (76) are formed by the difference in the constant elongation strength, by aligning the wale direction (Σ) with the width direction (i) of the base material and stretching between the support materials. The constant elongation strength acting in the depth direction (q) of the elastic face material can be changed for each part having a different position in the width direction (i) of the elastic face material.

  In the woven fabric, the “parts having different constant elongation strength” means a place where positions of the warp yarns (18) of different types can be selectively arranged in different positions in the woven width direction (r), and a weft of different types. (19) means either one or both of the positions (weaving steps) at different positions (weaving steps) in the weaving direction (h), which can be sequentially driven into the openings between the warps (18, 18). Accordingly, in the case of applying a woven fabric (FIGS. 10 to 12) in which the warp yarn (18) and the weft yarn (19) are orthogonal to each other in the same manner as the weft insertion warp knitted fabric in which the warp yarn and the weft yarn are orthogonal (FIG. 1). By selectively applying several kinds of yarns having different elastic elasticity to one or both of the warp and the weft, the transverse streaks (75) due to the difference in constant elongation strength are formed, or the longitudinal streaks (76) are formed. Alternatively, either one of the depth direction (q) and the width direction (i) of the elastic face material (62) so as to form a lattice figure in which the horizontal stripe (75) and the vertical stripe (76) intersect. Or the constant elongation strength in both can be partially changed.

  In this way, when several types of yarns with different stretch elasticity applied to change the constant elongation strength exhibit different appearances depending on the specifications of the yarns such as fineness, number of twists, and fiber materials, etc. As shown in FIG. 13, a striped pattern or a lattice pattern tends to appear on the cushion surface.

  In order to prevent the difference in the elastic elasticity of the yarn from appearing in the appearance of the elastic fabric, the low elastic yarn and fiber material, the fineness, the number of constituent fibers, , Applying high stretch yarns of the same specifications with the same number of twists to the other part of the two parts where the elongation stress of the fabric is different at the required elongation rate. It is preferable that the woven / knitted structure and the woven / knitted density of two portions having different elongation stresses of the fabric at the same time be the same. Another method for preventing the difference in the elastic elasticity of the yarn from appearing on the outer appearance of the elastic fabric is that the surface of each part having different constant elongation strength is dyed, fineness, number of constituent fibers, and twisted It is to make any raised surface of a cut pile, a loop pile, or a raised fluff composed of yarns of the same specification having a common number. When the elastic fabric is a double fabric in which the surface layer constituted by the front yarn and the back layer constituted by the back yarn are front and back, the fiber material is applied to the surface layer of each part having different constant elongation strength. It is good to apply the low-stretch yarn of the same specification which shares the same fineness, the number of constituent fibers, and the number of twists.

  An elastic yarn of 300 dtex or more made of plastic has a thick hook shape, and the surface is smooth and slippery. For this reason, the elastic fabric comprised by such an elastic yarn is also slippery, and the elastic surface material comprised by the elastic fabric is also slippery. When a limb is placed on such an elastic surface material, the limb does not slide and does not settle down, and it becomes easy to feel fatigue.

Therefore, weaving / knitting anti-slip yarn containing fibers with a single yarn fineness of 30 dtex or less into the elastic fabric, and the fibers of 30 dtex or less of the anti-slip yarn with any length and width of 1 cm square (= 1 cm ² ) of the elastic fabric. The surface of the rectangular region is raised, and the average friction coefficient (ω) of the elastic fabric by the following measurement method is set to 0.26 or more (0.26 ≦ ω).

(Step 1) A rectangular test cloth (elastic cloth) cut into 20 cm squares in the vertical and horizontal directions is spread on the surface of a metal plate that is finished in a mirror surface and is horizontally supported, and is firmly fixed.
(Step 2) A stainless steel base having a rectangular bottom surface of 10 mm in length and width, with a total of 20 lines partitioned by cutting grooves having a width of 0.1 mm and a depth of 0.1 mm parallel to one side of the bottom surface (HUS304) A contact is placed on a test fabric (elastic fabric) with its bottom face down.
(Step 3) A load of 50 gf is applied from the contact to the test fabric (elastic fabric).
(Step 4) The contactor is reciprocated by 30 mm at a moving speed of 0.1 cm / sec in a direction orthogonal to the bottom line.
(Step 5) In the movement between 20 mm in the middle of the forward path and the return path, the average value (F; gf) of the frictional drag acting between the contact and the test fabric (elastic fabric) is applied to the contact. The average value (0.5ω ₁ + 0.5ω ₂ ) of the friction coefficient (ω ₁ ) in the machine direction and the coefficient of friction (ω ₂ ) in the transverse direction of the test cloth calculated by dividing by the load (50 gf) The average friction coefficient (ω).

The reason why the anti-slip yarn is exposed in a rectangular region of 1 cm square (1 cm ² ) in length and width is that the surface of the elastic fabric is composed of fibers of 30 dtex or less as in the case of conventional fabric.

  The region that defines the friction coefficient is defined as 1 cm in length and width. Even if the elastic fabric is configured to be porous, the gap between the yarns surrounded by the yarn exceeds 1 cm in length and width. This is because the elastic fabric cannot be expected to have an anti-slip effect due to the anti-slip yarn. That is, even if fibers of 30 dtex or less are evenly distributed over the entire surface of the elastic fabric, it is required to distribute the fibers without unevenness in order to produce an anti-slip effect on the elastic fabric.

  That is, according to the present invention, a fiber having a diameter of 30 dtex or less is interposed on the surface of an elastic fabric composed of thick and slippery elastic yarn, and the exposed area ratio of the elastic yarn exposed on the surface of the elastic fabric is relatively small. Intended to be.

  However, it is not necessary for the elastic yarn to be completely hidden by the fibers of 30 dtex or less. This is because the elastic face material is also required to have a slipperiness (smoothness) enough to swing the limb placed on it freely. Considering this point, the average friction coefficient (ω) of the surface of the elastic fabric is 0.60 or less (0.26 ≦ ω ≦ 0.60), preferably 0.30 to 0.50 (0.30 ≦ ω). ≦ 0.50), more preferably 0.35 to 0.40 (0.35 ≦ ω ≦ 0.40). For this purpose, the ratio of the exposed area of the anti-slip yarn to the rectangular area of 1 cm square in the vertical and horizontal directions of the elastic fabric is generally 50% or less, preferably 5 to 30%, more preferably about 20%. It is good to set to 15 to 25%.

  The anti-slip yarn includes (1) a spun yarn, a raised yarn of a multifilament yarn with raised fluffs on the surface, and (2) an additive yarn entangled with the core yarn in a ring shape to form irregularities on the surface. Ring yarn, (3) Slab yarn in which the spliced yarn is entangled with the core yarn in the form of a spun sliver, forming irregularities on the surface, (4) The additive yarn is entangled with the core yarn in a fuzzy shape to form irregularities on the surface Nep yarn, (5) Core-sheath composite yarn in which the sheath yarn covering the core yarn is raised on the surface, (6) Interlace yarn in which the multifilament yarn having a high overfeed rate is raised on the surface to form irregularities , (7) Mole yarn or chenille yarn, where the flower yarn piece is locked to the core yarn and protruding from the surface, (8) Flocky processed yarn in which fiber fragments are electrostatically flocked to the core yarn, (9) Natural leather, synthetic Cut leather, artificial leather, non-woven fabric, etc. into tape And it is made, using the yarn fluffy the tape yarns such as cutting openings are fluffy.

  The elastic fabric can be fluffed to fluff the anti-slip yarn exposed on the surface. In addition, when ordinary spun yarn or multifilament yarn is used for the anti-slip yarn, a pile can be formed on the surface of the elastic fabric by these yarns. In that respect, it is recommended to use a Mole yarn, a chenille yarn or a flocked yarn whose surface is covered with a pile for the anti-slip yarn.

  Therefore, in the double elastic fabric composed of the front and back fabrics, it is recommended to use the elastic yarn (11) for the back fabric (34) and the anti-slip yarn for the front fabric (32). The

[Example A-1]
A polyester fiber spun yarn (fineness: 2/10 meter) is applied to the warp, and the warp density is set to 55/10 cm to warp. For wefts, a heat-fusible core-sheath composite polyether ester elastic yarn (fineness) with a polyether-based ester as the core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as the sheath component polymer. : 2080 dtex, Toyobo Co., Ltd. product name: Diaflora). The weft density is set to 115/10 cm, and a woven fabric having a cedar weave structure shown in FIG. 3 is woven. The fabric is subjected to dry heat treatment at 190 ° C. for 3 minutes, and the warp yarn (11) and the weft yarn (22) are fused to finish the elastic fabric. This elastic fabric (10) is extended from a frame (60) shown in FIG. 6 with two edges fixed to two supporting members (61a, 61b) having a length of 45 cm and facing each other at a distance of 50 cm. The elastic face material (62) is created. The lower body was seated on the horizontally supported elastic fabric, and a sensory test for sitting comfort on the elastic fabric was performed. As a result, the elastic fabric (10) felt a sense of stability and was evaluated as having good sitting comfort.

[Comparative Example A-1]
A polyester fiber spun yarn (fineness: 2/10 meter) is applied to the warp, and the warp density is set to 55/10 cm to warp. For wefts, a heat-fusible core-sheath composite polyether ester elastic yarn (fineness) with a polyether-based ester as the core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as the sheath component polymer. : 2080 dtex, Toyobo Co., Ltd. product name: Diaflora). The weft density is set to 115 yarns / 10 cm, and a woven fabric having the oblique weave structure shown in FIG. 7 is woven. The fabric is dry-heat treated at 190 ° C. for 3 minutes, and the warp yarn (11) and the weft yarn (22) are fused to finish the elastic fabric. This elastic fabric (10) is extended from a frame (60) shown in FIG. 6 with two edges fixed to two supporting members (61a, 61b) having a length of 45 cm and facing each other at a distance of 50 cm. The elastic face material (62) is created. The lower body was seated on the horizontally supported elastic fabric, and a sensory test for sitting comfort on the elastic fabric was performed. As a result, it was evaluated that a difference in elongation between the left and right bias directions of the elastic fabric (10) was felt, a sense of instability was felt in the sitting posture, and the sitting comfort was not good.

[Comparative Example A-2]
A polyester multifilament yarn (fineness: 1333 dtex) is applied to the warp and the warp density is set to 91/10 cm to warp. For wefts, a heat-fusible core-sheath composite polyether ester elastic yarn (fineness) with a polyether-based ester as the core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as the sheath component polymer. : 2080 dtex, Toyobo Co., Ltd. product name: Diaflora). The weft density is set to 115 yarns / 10 cm, and a woven fabric having the oblique weave structure shown in FIG. 7 is woven. The fabric is subjected to dry heat treatment at 190 ° C. for 3 minutes, and the warp yarn (11) and the weft yarn (22) are fused to finish the elastic fabric. This elastic fabric (10) is extended from a frame (60) shown in FIG. 6 with two edges fixed to two supporting members (61a, 61b) having a length of 45 cm and facing each other at a distance of 50 cm. The elastic face material (62) is created. The lower body was seated on the horizontally supported elastic fabric, and a sensory test for sitting comfort on the elastic fabric was performed. As a result, it is felt that the elastic fabric (10) has a difference in elongation in the left and right bias directions, the instability is felt in the sitting posture, and the elastic fabric (10) is felt hard and the sitting comfort is poor. It was.

[Comparative Example A-3]
A polyester fiber spun yarn (fineness: 2/10 meter) is applied to the warp, and the warp density is set to 55/10 cm to warp. For wefts, a heat-fusible core-sheath composite polyether ester elastic yarn (fineness) with a polyether-based ester as the core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as the sheath component polymer. : 2080 dtex, Toyobo Co., Ltd. product name: Diaflora). The weft density is set to 100/10 cm, and a woven fabric having a plain weave structure shown in FIG. 8 is woven. The fabric is dry-heat treated at 190 ° C. for 3 minutes, and the warp yarn (11) and the weft yarn (22) are fused to finish the elastic fabric. This elastic fabric (10) is extended from a frame (60) shown in FIG. 6 with two edges fixed to two supporting members (61a, 61b) having a length of 45 cm and facing each other at a distance of 50 cm. The elastic face material (62) is created. The lower body was seated on the horizontally supported elastic fabric, and a sensory test for sitting comfort on the elastic fabric was performed. As a result, the elastic fabric does not feel a difference in elongation in the left and right bias directions, but the overall sinking of the elastic fabric is large. It was.

[Comparative test A]
Elastic yarn (11) of elastic fabric (10) according to Example (A-1), Comparative Example (A-1), Comparative Example (A-2), and Comparative Example (A-3) Stress (F ₁ ) (N / 5 cm) at 10% elongation in the extending direction (X) of the yarn, and hysteresis loss ratio ΔE ₁ (% at the time of 10% elongation in the extending direction (X) of the elastic yarn (11) ), Stress at 10% elongation in the orthogonal direction (Y) of the elastic yarn (11) (F ₂ ) (N / 5 cm), hysteresis at 10% elongation in the orthogonal direction (Y) of the elastic yarn (11) Loss rate ΔE ₂ (%), stress (B ₁ ) (N / 5 cm) at 10% elongation in 45 ° bias direction (Z ₁ ) inclined 45 ° to the upper left from its extending direction (X), its extension direction (X) 45 degrees to the upper right from the tilted 45 degrees bias direction (Z ₂₎ in at 10% elongation stress (B ₂₎ (N / cm), bulk density (J) (dtex / cm) of elastic yarn (11), bulk density (j) (dtex / cm) of inelastic yarn (crossed yarn), inelastic yarn (crossed yarn) ) And elastic yarn bulk density ratio (J ÷ j), elastic yarn coverage (K) (%), elastic yarn texture (H), and elastic yarn texture (H) The product (H × K) with the cover ratio (K) is as shown in Table 1 below.

[Example B-1]
A polyester fiber spun yarn (2/10 meter count) is applied to the warp, and the warp density is set to 64/10 cm to warp. A heat-fusible core-sheath composite polyether-based ester elastic yarn having a polyether ester as a core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as a sheath component polymer (Fineness: 2080 dtex, Toyo Spinning Co., Ltd. product name: Diaflora) is applied to the first weft. Polyfilament processed yarn (167 dtex) made of polyester fiber (single yarn fineness: 3.4 dtex) is applied to the flower yarn, and fused with polyester fiber (single yarn fineness: 1.4 dtex) spun yarn (20/1 cotton count). A mole yarn (1 / 2.8 meter count) obtained by applying an adhesive nylon monofilament yarn (78 dtex) to the core yarn is applied to the second weft. The weft density is set to 120/10 cm, and the first weft and the second weft are driven alternately to weave a woven fabric with a twill weave structure. The woven fabric is passed through a pin tenter and subjected to a dry heat treatment at 185 ° C. for 3 minutes to fuse and solidify the connecting point between the warp and the weft to finish the elastic fabric (10). The elastic fabric (10) has a tensile stress (F) of 10% elongation in the weaving width direction (r) of 217 (N / 5 cm) and a friction coefficient (ω _h ) in the fabric length direction (h) of 0. .375, the friction coefficient (ω _r ) in the weaving width direction (r) was 0.387, and the average friction coefficient (ω) was 0.381.

[Example B-2]
A polyester fiber spun yarn (2/10 meter count) is applied to the warp, and the warp density is set to 64/10 cm to warp. A heat-fusible core-sheath composite polyether-based ester elastic yarn having a polyether ester as a core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer as a sheath component polymer (Fineness: 2080 dtex, Toyo Spinning Co., Ltd. product name: Diaflora) is applied to the first weft. Polyfilament processed yarn (167 dtex) made of polyester fiber (single yarn fineness: 3.4 dtex) is applied to the flower yarn, and fused with polyester fiber (single yarn fineness: 1.4 dtex) spun yarn (20/1 cotton count). A mole yarn (1 / 2.8 meter count) obtained by applying an adhesive nylon monofilament yarn (78 dtex) to the core yarn is applied to the second weft. Polyfilament processed yarn (167 dtex × 3) of polyester fiber (single yarn fineness: 3.4 dtex) is applied to the spliced yarn, and multifilament processed yarn (83 dtex × 2) of polyester fiber (single yarn fineness: 3.4 dtex) ) Is applied to the core yarn, and a multifilament processed yarn (83 dtex) of polyester fiber (single yarn fineness: 3.4 dtex) and a multifilament processed yarn (167 dtex) of polyester fiber (single yarn fineness: 3.4 dtex) are pressed. The ring yarn (1 / 3.8 meter count) obtained by pressing the spliced yarn, which is entangled with the core yarn and forming a knot into the core yarn, is pressed against the core yarn by two press yarns (third anti-slip yarn).
Applies to The weft density is set to 136/10 cm, and the first weft yarn, the second weft yarn, and the third weft yarn are alternately driven to weave a woven fabric having a twill weave structure. The woven fabric is passed through a pin tenter and subjected to a dry heat treatment at 185 ° C. for 3 minutes to fuse and solidify the connecting point between the warp and the weft to finish the elastic fabric (10). The elastic fabric (10) has a tensile stress (F) of 266 (N / 5 cm) at 10% elongation in the weaving width direction (r), and a friction coefficient (ω _h ) in the fabric length direction ( _h ) is 0. 398, the friction coefficient (ω _r ) in the weaving width direction (r) was 0.391, and the average friction coefficient (ω) was 0.395.

[Comparative Example B-1]
A polyester fiber spun yarn (2/10 meter count) is applied to the warp, and the warp density is set to 64/10 cm to warp. Heat-fusible core-sheath composite polyether-based ester elastic yarn (2080 dtex, Toyobo Co., Ltd.) having a polyether ester as a core component polymer and a heat-fusible polymer having a lower melting point than that of the core component polymer as a sheath component polymer. Company product name: Diaflora) is applied to the weft. The weft density is set at 136/10 cm, and a woven fabric with a twill weave structure is woven. The woven fabric is passed through a pin tenter and subjected to a dry heat treatment at 185 ° C. for 3 minutes to fuse and solidify the connecting point between the warp and the weft to finish the elastic fabric (10). The elastic fabric (10) has a tensile stress (F) of 10% elongation in the weaving width direction (r) of 403 (N / 5 cm) and a friction coefficient (ω _h ) in the fabric length direction (h) of 0. 202, the friction coefficient (ω _r ) in the weaving width direction (r) was 0.273, and the average friction coefficient (ω) was 0.238.

It is a surface view of the elastic fabric which concerns on this invention. It is a surface view of the elastic fabric which concerns on this invention. It is a surface view of the elastic fabric which concerns on this invention. It is sectional drawing of the elastic fabric which concerns on this invention. It is a load elongation curve figure of the elastic fabric which concerns on this invention. It is a perspective view of the elastic surface material which concerns on this invention. It is a surface view of the elastic fabric which concerns on the comparative example of this invention. It is a surface view of the elastic fabric which concerns on the comparative example of this invention. 1 is a perspective view of an elastic fabric according to the present invention. 1 is a perspective view of an elastic fabric according to the present invention. 1 is a perspective view of an elastic fabric according to the present invention. 1 is a perspective view of an elastic fabric according to the present invention. 1 is a perspective view of an elastic fabric according to the present invention.

Explanation of symbols

10: Elastic fabric 11: Elastic yarn (insert yarn / warp yarn / weft yarn)
13: Inelastic yarn (straight line, crossed yarn)
18: Warp 19: Chain stitch row (weft)
20: Connection point 22: Insertion thread (cross yarn, inelastic yarn, warp yarn, weft yarn)
31: Front thread 32: Front cloth 33: Back thread 34: Back cloth 35: Connecting thread 36: Gap layer 37: Opening 39: Chain stitch row 40: Knit loop 50: Sinker loop 60: Frame 61: Support material 62: Elasticity Face material 74: Cushion surface 75: Horizontal bar 76: Vertical bar D: Average thickness of elastic yarn d: Average thickness of inelastic yarn φ: Course Γ: Course direction σ: Wale Σ: Wale direction Lc: Average course Interval h: Fabric length direction r: Fabric width direction q: Elastic face material depth direction i: Elastic face material width direction X: Elastic yarn extending direction Y: Orthogonal direction Z: 45 degree bias direction

Claims (3)

(1) Elastic yarn is applied to both warp and weft,
(2) The breaking elongation of the elastic yarn is 60 (%) or more, and the elastic recovery rate after 15% elongation is 90 (%) or more,
(3) Stress (F) (N / 5 cm) at the time of 10% elongation of the fabric in the extending direction in which the elastic yarn is continuous is 150 ≦ F ≦ 600 (N / 5 cm),
(4) The elastic yarn is shown in the load elongation curve diagram up to 10% elongation in the extending direction in which the elastic yarn extends over a part of the width or a part of the width or a part of the length or the entire length. The integrated value (V) of the load elongation relational expression (f ₀ (ρ)) represented by the hysteresis pressure curve (f ₀ ) and the load elongation relation represented by the decompression curve (f ₁ ) of the hysteresis. Load elongation relational expression (f) expressed by the pressure curve (f ₀ ) of hysteresis loss (C = V−W) expressed as a difference from the integral value (W) of the expression (f ₁ (ρ)) ₀ (ρ)) has a hysteresis loss rate (ΔE = 100 × C / V = 100 × (V−W) / V) in the integrated value (V) of 20 to 45% (20 ≦ ΔE ≦ 45). Woven or knitted elastic fabric.   The elastic fabric according to claim 1 is a weft-inserted warp knitted fabric, and several types of warp knitting yarns having different stretch elasticity are selectively disposed on wales having different base warp knitted fabrics. The elastic fabric according to claim 1, wherein several types of wefts having different stretch elasticity are selectively inserted and knitted for each course or for each required course.   The elastic fabric according to claim 1 is a woven fabric, and selectively applies several kinds of yarns having different elastic elasticity to both the warp and the weft, and the transverse muscle (75) and the elastic elasticity of several kinds of wefts having different elastic elasticity. In order to form a lattice figure in which the vertical stripes (76) of several different warp yarns cross each other, the positions in the weaving width direction (r) and the positions (weaving steps) in the weaving direction (h) The elastic fabric according to claim 1, wherein the elongation stress (constant elongation strength) of the elastic fabric at the time of elongation is partially changed to a required elongation rate at both different locations.

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