JP4502201B2 - Elastic fabric for cushion body tension - Google Patents

Description

  The present invention relates to an elastic sheet 16 that is used to construct a cushion surface 12 of a cushion body 11 by being stretched between two facing frame members 13 and 13.

The present applicant has filed a patent application for an elastic fabric using heat-shrinkable elastic yarn as an elastic sheet used for the cushion body (see, for example, Patent Document 1). The elastic fabric according to the patent application includes a double woven bag and a plain woven fabric, and the double woven bag has a bag shape. A cushion frame 19 is inserted into the cavity and is heat-shrinked so that it is tensioned between the two frame members 13 and 13 of the frame 19. The left and right edges 18 facing each other in the length direction Q of the yarn are folded back to sew the bag-like cavity 20, and the frame member 13 is inserted into the bag-like cavity 20 and attached to the frame 19 of the cushion body, and the frame is thermally contracted. Tension is applied between the two frame members 13 and 13 of 19.
JP 2001-333839 A (Claims 0010, 0020, FIGS. 1 and 2)

  The frame member 13 inserted into the bag-like cavity 20 that is folded and sewn at the end edge 18 can be connected to the frame 19 by a joining member 21 such as a hook. In that case, a hole or a cut for inserting the joining member 21 is formed. The bag-like cavity 20 is provided so as to jump in the length direction of the edge 18. As the elastic yarn, a heat-fusible core-sheath composite yarn having a sheath component as a heat-fusible polymer is also used, and the warp and the weft are bonded via the heat-fusible polymer. There is no misalignment between them, and the pressing load applied to the cushion surface 12 during use is evenly distributed in all directions of the elastic fabric 16.

  Elastic yarn is not used for warp, but exclusively for weft. This is because even if an elastic yarn is used for warp, the warp (elastic yarn) expands and contracts during the weaving process, the warp tension is not constant, and the weft density (weft driving density) varies greatly, resulting in a high quality. A stable elastic fabric cannot be obtained. In addition, the elastic yarn is less slippery than other fiber yarns, does not pass smoothly through the reeds and wings, and the reed that rubs against the warp (elastic yarn) is easily bent, and the warp (elastic yarn) is also Easily damaged by rubbing against wings and wings.

  Generally, the vertical and horizontal dimensions of the cushion surface of the cushion body are generally 50 cm or less. For this reason, in order to weave the prior-application elastic fabric in a bag shape, a loom having a small width of 50 cm or less corresponding to the dimension of the cushion surface 12 is required. However, although the narrow loom is used in the field of Japanese garments and handicraft fabrics, it is not widely used in general, and its weaving efficiency is significantly lower than that of the widely used loom. For this reason, the elastic fabric is woven by a wide loom having a weaving width of 1 m or more, cut according to the size of the cushion surface, and the left and right end edges 18 facing in the length direction Q of the elastic yarn (weft) are folded back and stitched. Then, the frame material 13 is inserted into the bag-like cavity 20 formed at the end edge 18 and used.

  When the elastic yarn (weft 14) is bent and deformed as if embossed by being pressed against the warp 15 at the connection point of the elastic fabric, the elastic yarn is bent by the initial load acting on the cushion surface 12 during use. The cushion surface 12 sinks greatly until it is tensioned from the state until it becomes a straight state, and then a reaction force against the pressing load acting on the cushion surface 12 acts from the elastic yarn 14. The initial sinking of the cushion surface until the elastic yarn (weft 14) is in a straight state gives an unpleasant feeling as if it had fallen into the depression of the cushion surface.

  In order to eliminate such discomfort, multifilament yarns and spun yarns that are easy to bend are used for the warp yarns 15, and thick monofilament elastic yarns that are difficult to bend are used for the elastic yarns (weft yarns 14). When a monofilament yarn is used for the warp 15, a monofilament elastic yarn thicker than the warp 15 is used for the weft 14. For this reason, the conventional elastic fabric 16 is easy to fold in the length direction R of the warp 15 like a cocoon, and difficult to fold in the length direction Q of the weft 14, and is a bag for inserting the frame material 13 into the end edge 18. It takes time to sew the hollow cavity 20.

  Further, when the conventional elastic fabric 16 is used for a long time as the cushion surface 12 of the cushion body, the elastic yarn (weft 14) is woven straight without bending, so that the pressing load acting on the cushion surface is The elastic yarn (weft yarn 14) becomes a tensile load pulled in the length direction Q and acts repeatedly between the warp yarn 15 outside the bag-like cavity and the frame member 13. For this reason, the outer warp 15 is gradually pushed out to the end edge 18 by the frame member 13 and finally unwound from the end 17 of the elastic yarn (weft). Inconvenience that it will come off from the hollow 20 will occur. In other words, in other words, the end 17 of the elastic yarn (weft) is pulled out from the warp yarn (15) so as to be caught by the frame member 13.

  Accordingly, an object of the present invention is to obtain a durable cushion body by preventing the yarn from unraveling from the end edge 18 of the elastic sheet 16 to which the frame member 13 is attached. Another object of the present invention is to obtain an elastic sheet 16 that does not require time for preparatory work for tensioning the cushion body 11 on the frame 19.

  The elastic fabric for tensioning a cushion body according to the present invention is woven using a non-flat cross-sectional shape monofilamate elastic yarn having a fineness of 300 dtex or more as a weft, and the heat-fusible yarn is used as a warp, the length of the weft. A heat-fusible multifilament yarn that is arranged in the direction Q with an interval L of 20 to 70 cm, and whose heat-fusible yarn (warp) is composed of fibers having a single yarn fineness of 100 dtex or less, or A heat-fusible flat yarn formed by cutting a spun yarn or a heat-fusible sheet having a thickness of 100 μm or less into a tape shape, and the heat-fusibility of the heat-fusible yarn (warp yarn). The component is fused to the elastic yarn (weft), and the fiber and fiber inside the heat-fusible yarn (warp) are the heat-fusible component of the heat-fusible yarn (warp). The first feature is that they are fused together.

  A second feature of the elastic fabric for cushion body tension according to the present invention is, in addition to the first feature described above, disposed with a distance L of 20 to 70 cm in the longitudinal direction Q of the weft, and is heat-fusible. Non-heat-bondable yarns are alternately arranged on the heat-fusible yarns at the yarn placement locations 30, and the heat-fusible yarn placement locations 30 are in the warp yarn length direction. A fusion band following the band shape is formed on R, and the elastic fabric is partitioned in the longitudinal direction Q of the weft by the fusion band.

  A third feature of the elastic fabric for cushion body tension according to the present invention is that, in addition to any of the first and second features, the non-elastic yarn is alternately woven into the elastic yarn as a weft. The inelastic yarn is composed of a large number of fibers having a single yarn fineness of 100 dtex or less.

  A fourth feature of the elastic fabric for cushion body tension according to the present invention is that, in addition to any of the first, second and third features, an interval L of 20 to 70 cm is provided in the longitudinal direction Q of the weft. The left and right sides of the arrangement location 30 of the heat-fusible yarn arranged at the right and left sides are formed by a bag weave structure in a total of two left and right bag-like cavities 20 and 20 that are straight in the longitudinal direction R of the warp. It is in.

  A fifth feature of the elastic fabric for cushion body tension according to the present invention is that, in addition to the fourth feature, one of the woven fabric constituting the front and back of the bag-like cavity 20 and at least one of the woven fabrics in the front fabric. In the portion, the porous portion 33 which has been separated into the inner side and the outer side of the bag-like cavity 20 without the warp and weft coming into contact with each other, jumps into the bag-like cavity 20 at a required interval P in the length direction R of the warp. It is in the point formed.

  The sixth feature of the elastic fabric for cushion body tension according to the present invention is that, in addition to any of the first, second, third, fourth and fifth features, the elastic yarn is heat-sealed. It is a core-sheath composite monofilament elastic yarn having a functional polymer as a sheath component and an elastic polymer as a core component.

In an elastic woven fabric that is heat-sealed using a core-sheath composite monofilament elastic yarn with a heat-fusible polymer as a sheath component and an elastic polymer as a core component for both warp and weft, the fusion state between the warp and the weft is It becomes point adhesion. Such a fused state (point adhesion) is effective in preventing misalignment between the warp and the weft, but it is effective in preventing the release at the edge 18 of the cushion surface where strong stress acts from the frame material. Does not work effectively. Also, a heat-fusible core-sheath composite monofilament elastic yarn is used as a weft, and a flexible and flexible non-heat-weldable multifilament yarn or non-heat-welded spun yarn is formed as an aggregate of many fibers. In an elastic woven fabric having warp as a warp, a flexible warp whose cross section is deformable is bent into a bow shape and is in close contact with the peripheral surface of the weft, and the fused state between the warp and the weft is surface adhesion.
However, the heat-fusible core-sheath composite monofilament elastic yarn is simply fused to a few filaments exposed on the peripheral surface of multifilament yarn or spun yarn which is an aggregate of many fibers. However, it is in an unfused state with too many fibers interspersed within the multifilament yarn or spun yarn, and between all the fibers interspersed within that fiber Since it is free to slide, the gap between the weft (heat-sealable core-sheath composite monofilament elastic yarn) and the warp (multifilament or spun yarn) moves like a cage on the sand. Even if the fused state is effective for preventing misalignment between the warp and the weft, it does not effectively act to prevent the cushion edge from being released at the edge 18.

  In this regard, in the present invention, the heat-fusible yarn (warp yarn) that intersects a thick monofilament elastic yarn (weft yarn 34) having a single yarn fineness exceeding 300 dtex has a single yarn fineness greater than that of the elastic yarn (weft yarn 34). Since it is an aggregate of a large number of fibers (multifilament, multifilament, spun yarn) that are composed of thin fibers of 100 dtex or less and whose cross-sectional shape is freely deformable, the fused state between the warp and the weft at the binding point is In addition to surface adhesion, in the fused state, all the constituent fibers are bonded by the fusion component of the warp (heat-fusible yarn), and the fibers intervening in the interior are displaced. The fiber structure (multifilament yarn, multifilament, spun yarn) is similar to the heat-fusible monofilament yarn, and the warp and weft are fused at the junction. Integration , Its fused state acts effectively to unraveling at the edge of the cushion surface, will not be peeled off between the warp and weft.

  In the case where a heat-fusible flat yarn is used for the heat-fusible yarn (warp yarn), it is a film or sheet having a thickness of 100 μm or less that is thinner and flexible than the elastic yarn (weft 34), and Like the above heat-fusible multifilament yarn (multifilament / spun yarn) that was originally fused to the elastic yarn (weft yarn 34), the material and the material intervening inside are joined and integrated. Therefore, it effectively works to prevent the cushion face from being released at the edge 18.

Wefts (elastic yarns) are warp yarns (multifilament yarns, multifilaments, spun yarns) that are highly flexible and bend at the connection points according to the cross-sectional shape of the wefts. It maintains a straight line shape without any straight line. For this reason, according to the present invention, the reaction force against the pressing load acting on the cushion surface 12 is caused by the elasticity inherent in the elastic yarn, regardless of the bent elastic shape of the elastic yarn, and is pressed against the cushion surface 12. There is little initial sinking where the load is applied, and there is no discomfort as if it fell into the depression of the cushion surface.
Thus, according to the present invention, the elastic fabric 36 is not unraveled at the edge of the cushion surface, and the cushion body 11 having a high durability and a moderate feeling can be obtained.

  An elastic fabric in which a heat-fusible yarn (warp yarn) is fused to an elastic yarn (weft) and is partitioned into a fusing zone 30 that continues in a band shape is used by cutting along the fusing zone 30. The When non-heat-bondable yarns are alternately arranged on the fusion band 30 with heat-fusible yarns (warp yarns), adjacent heat-fusible yarns are fused together to form a fusion band. The flexibility of the adhesive band 30 is maintained without the film 30 becoming a film shape, and the adhesive band 30 does not crack at the time of cutting. After the cutting, the fusion band 30 constitutes the end edge 18 of the cushion surface. The end edge 18 is formed by bonding the heat-fusible yarn (warp yarn) to the elastic yarn (weft yarn). The shape is stable and the elastic fabric 36 can be easily attached to the frame 19 and the frame member 13 of the cushion body 11, and the edge 18 is not cracked in the attachment process.

  In an elastic fabric in which a flexible inelastic yarn composed of a number of fibers having a single yarn fineness of 100 dtex or less is alternately woven into an elastic yarn (weft) as a weft, the elastic yarn (weft) is in a straight line. However, since the flexible inelastic yarn (weft) is bent at the connection point with the warp, there is no misalignment between the warp and the weft. 12 becomes stable, and at the edge 18, the inelastic yarn (weft) is well-familiar with the heat-fusible yarn (warp yarn) and is entangled and fused. The unraveling of the elastic fabric 36 is effectively avoided. An inelastic yarn (weft) composed of a large number of fibers having a single yarn fineness of 100 dtex or less is generally stretchable within a range where the elongation is about 5%, while a thick elastic yarn (weft) of 300 dtex or more is elastic. Even if the elastic fabric 36 is elastically expanded and contracted, the cushion surface 12 of the elastic fabric 36 does not greatly expand and contract beyond about 5%, and therefore, the non-elastic yarn (weft) is an elastic yarn constituting the elastic fabric 36 ( It does not hinder the elastic properties of the weft).

  In the present invention, a total of 2 left and right following the straight line in the warp yarn length direction R is arranged on the left and right of the heat-fusible yarn arrangement portion 30 with an interval L of 20 to 70 cm in the length direction Q of the weft yarn. Since the sack-like cavities 20 and 20 of the strip are woven by the sack weave structure, the labor of folding the end edge 18 and sewing the sack-like cavity 20 is saved. In the present invention, since the porous portion 33 that continues inside the bag-like cavity 20 is provided so as to jump in the longitudinal direction R of the warp yarn, the warp yarns and wefts that float on the porous portion 33 are scraped into the bag-like cavity 20. The inserted frame member 13 can be exposed, and the joining member 21 can be joined thereto. As a result, in order to connect the joining member 21 to the frame member 13, the joining member insertion hole and the joining member insertion gap are formed in a bag-like cavity. This saves the trouble of setting up at 20.

  In the case where a heat-fusible core-sheath composite monofilament elastic yarn having a heat-fusible polymer as a sheath component and an elastic polymer as a core component is used as a weft, warp and weft at the edge 18 (fusion band 30) This increases the adhesive strength of the elastic fabric 36 and prevents the elastic fabric 36 from being unwound at the edge 18 more effectively. Thus, according to the present invention, a wide elastic fabric is woven by a wide loom several times the size of the cushion surface, cut into a small elastic fabric 36 corresponding to the size of the cushion surface in the cohesive zone, and the frame 19 of the cushion body as it is. The elastic fabric for the cushion body can be obtained efficiently.

  The elastic yarn has a non-flat cross-sectional monofilamate elastic yarn having a breaking elongation of 60% or more and an elastic recovery rate of 90% or more after 15% elongation, for example, a polyether ester as a core component polymer. A heat-fusible core-sheath composite polyether-based ester elastic yarn having a heat-fusible polymer having a melting point lower than that of the core component polymer as a sheath component polymer (500 dtex-1f, Toyobo Co., Ltd., product name: Diaflora) Should be used. As for the weaving density (weft density) of the elastic yarn, the stress F (unit: N / 5 cm) at the time of 10% elongation of the elastic fabric in the longitudinal direction Q of the elastic yarn (weft) is 150 ≦ F ≦ 600. It is good to set as follows.

The heat-fusible yarn (warp) used for the fusing zone 30 crosses the elastic yarn (weft) at the joining point and is easily deformed into an arcuate shape, and the elastic yarn (weft) at the joining point. In order to spread flatly in contact with the elastic yarn and increase the contact area with the elastic yarn (weft), the single yarn fineness of the fiber constituting the heat-fusible yarn (warp) is preferably 30 dtex or less, more preferably Is 10 dtex or less, and it is recommended that the heat-fusible yarn (warp yarn) be a non-twisted multifilament yarn in which the fibers are free and not converged.
The heat-fusible yarn (warp) used for the fusion band 30 may be a blended yarn or a blended yarn of a heat-fusible fiber and a non-heat-fusible fiber. As the heat-fusible fiber, a core-sheath composite fiber having a heat-fusible polymer as a sheath component may be used. In the fusion zone 30 (end edge 18), the heat-sealable yarn and the non-heat-sealable yarn may be alternated every two or every two or three.

The heat-sealable flat yarn used for the end edge 18 (fused portion 30) has a thickness of 100 μm or less, and the cross-sectional flatness (cross-sectional width ÷ cross-sectional thickness) is 4 or more. The heat-fusible film is cut into a tape, and the non-heat-fusible film, non-woven fabric, paper, etc. In addition to the laminated heat-fusible sheet cut into a tape shape, it may have a vertically long cut like a split yarn. If the wide elastic fabric can be cut into the small elastic fabric 36, the width M of the fusion band 30 may be 10 to 20 mm.
If the thickness of the non-heat-bondable sheet is 100 μm or less, the heat-bondable flat yarn that is cut and formed into a tape shape is folded in the width direction of the flat cross section, and an S-shaped cross section or It can have a C-shaped cross section, or a Z-shaped cross section or a Σ-shaped cross section.

  The distance L between the fusion band 30 and the fusion band 30, that is, the distance L at which the heat-fusible yarn (warp) is arranged in the longitudinal direction Q of the weft yarn is generally 20 to 70 cm. Specifically, it is set according to the dimension of the cushion surface 12. It is not always necessary to use a heat-fusible yarn for the wide portion of the elastic fabric 36 that constitutes the cushion surface 12.

  The dimension N (width) of the bag-shaped cavity 20 is set according to the thickness of the frame member 13 to be inserted therein. The interval P between the porous portions is set according to the number of joining members 21 required to connect the frame member 13 to the frame 19.

It is a perspective view of the elastic fabric for cushion body tensioning concerning the present invention, and is enlarging and enclosing a part in a circle. It is a perspective view of the elastic fabric which concerns on a prior art, and is enlarging and showing a part in a circle.

Explanation of symbols

11: Cushion body 12: Cushion surface 13: Frame material 14: Elastic yarn (weft)
15: Warp 16: Elastic fabric (elastic sheet)
17: End of elastic yarn (weft) 18: End edge 19: Frame 20: Bag-shaped cavity 21: Joining member 30: Fusing band (location where heat-fusible yarn is arranged)
33: Porous part 36: Elastic fabric L: Spacing interval of heat-fusible yarn M: Width of fusion band N: Dimensions of bag-like cavity P: Spacing of porous part Q: Length of elastic yarn (weft) Direction R: Length direction of warp

Claims (6)

(A) In an elastic fabric woven using a non-flat cross-sectional shape monofilamate elastic yarn having a fineness of 300 dtex or more as a weft,
(B) The heat-fusible yarn is arranged as a warp with a distance (L) of 20 to 70 cm in the longitudinal direction (Q) of the weft,
(C) A heat-fusible multifilament yarn, a spun yarn, or a heat-fusible sheet having a thickness of 100 μm or less, wherein the heat-fusible yarn (warp yarn) is composed of fibers having a fineness of 100 dtex or less. It is a heat-sealable flat yarn formed by cutting into a tape shape,
(D) The heat-fusible component of the heat-fusible yarn (warp) is fused to the elastic yarn (weft),
(E) Elastic fabric for cushion body tension, in which the fibers of the heat-fusible yarn (warp) are fused through the heat-fusible component of the heat-fusible yarn (warp) . (F) The non-heat-bondable yarn is heat-fused at the arrangement position (30) of the heat-fusible yarn arranged at an interval (L) of 20 to 70 cm in the longitudinal direction (Q) of the weft yarn. It is arranged alternately on the wearing thread,
(G) The arrangement location (30) of the heat-fusible yarn forms a fusion band that follows the belt shape in the longitudinal direction (R) of the warp,
(H) The elastic fabric for cushion body tension according to claim 1, wherein the elastic fabric is partitioned in the longitudinal direction (Q) of the weft by the fusion band. (I) Non-elastic yarns are woven into the elastic yarns alternately as wefts,
(J) The elastic fabric for cushion body tension according to any one of claims 1 and 2, wherein the inelastic yarn is composed of a large number of fibers having a single yarn fineness of 100 dtex or less.   The left and right sides that are arranged in the weft length direction (Q) with an interval L of 20 to 70 cm and that are arranged in a straight line in the warp yarn length direction (R) on the left and right of the arrangement point (30) of the heat-fusible yarn The elastic fabric for cushion body tension according to any one of claims 1, 2, and 3, wherein a total of two bag-like cavities (20, 20) are formed by a bag weave structure.   The warp and the weft are separated from each other on the inside and outside of the bag-like cavity (20) in a part of the lining constituting the front and back of the bag-like cavity (20) and at least one of the woven fabrics in the outer face. The cushion body tension according to claim 4, wherein the raised porous portion (33) is formed to jump into the bag-like cavity (20) at a required interval (P) in the longitudinal direction (R) of the warp. Elastic fabric for installation.   The above-mentioned claim 1, claim 2, claim 3, claim 4 and claim 3, wherein the elastic yarn is a core-sheath composite monofilament elastic yarn having a heat-fusible polymer as a sheath component and an elastic polymer as a core component. 5. The elastic fabric for cushion body tension according to any one of 5 above.

Images