JP5717603B2 - Vehicle interior sewing thread and vehicle interior products using the same - Google Patents

Description

  The present invention relates to a car interior sewing thread and a vehicle interior product using the same.

  Conventionally, filament threads such as polyester are often used as sewing threads for sewing interior products in vehicles such as automobiles from the viewpoint of sewing and durability (for example, Patent Document 1). This type of sewing thread is composed of a twisted yarn in which a plurality of single yarns are twisted together. By using the twisted yarn of the filament yarn, the durability required for sewing the vehicle interior product is secured. In addition, this type of sewing thread is dyed in a predetermined color in a twisted state after being twisted together. The entire thread is shrunk during dyeing and the twisted shape is fixed to some extent, which improves the sewing property.

JP 2011-152880 A

  In the filament sewing machine yarn, each single yarn is not dyed in a different color in the manufacturing process. Therefore, the color of the twisted sewing thread is a single color. When the sewing thread is monochromatic, the stitches of the vehicle interior are also monochromatic, and the design is not easily expressed in design.

  When a design interest is also required for the stitching of the vehicle interior product, it is preferable to use a kite thread as the sewing thread. However, the conventional silk thread is a wool thread, a hand-sewn thread, or a spun thread, and cannot be used to sew vehicle interior parts from the viewpoint of sewability and durability. Further, if a plurality of filament yarns dyed in advance are twisted together to form a kite yarn, the twist is easy to return, causing fraying at the time of cutting and swelling and damaging at the time of sewing with a sewing machine. For this reason, the sewability is poor.

  The problem to be solved by the present invention is to provide a vehicular interior sewing kite thread that is excellent in sewability and durability for sewing a vehicle interior product, and a vehicle interior product using the same.

  In order to solve the above-mentioned problems, in the car interior sewing thread according to the present invention, each single thread constituting the filament thread is dyed in each color in advance, and the plurality of single threads are twisted together. The gist is that it is fixed in its twisted shape by being heated in a state.

  The gist of a vehicle interior product according to the present invention is that sewing is performed using the above-described vehicle interior sewing thread.

  At this time, the car interior sewing thread is disposed on the design surface side of the skin of the vehicle interior product, and the monochromatic back thread disposed on the back side of the skin of the vehicle interior product, and the interior of the skin of the vehicle interior product It is preferable that it is sewn so that it may intersect. By using the kite yarn only for the front yarn, the sewing machine can be easily adjusted.

  According to the car interior sewing thread according to the present invention, since a plurality of filament yarns dyed in advance in each color are heated in a twisted state, the yarn is fixed in the twisted shape and twisted. Return is suppressed. For this reason, fraying at the time of cutting and occurrence of swelling and lumps at the time of sewing with a sewing machine can be suppressed. Therefore, it is excellent in sewability and durability for sewing a vehicle interior product.

  Moreover, according to the vehicle interior product according to the present invention, since the sewing is performed using the above-described vehicle interior sewing thread, the durability of the vehicle interior product for sewing is excellent.

It is the schematic diagram (a) of the kite thread for vehicle interior sewing which concerns on one Embodiment of this invention, and its AA sectional drawing (b). It is sectional drawing (a) (b) which showed the combination pattern of the kite thread for vehicle interior sewing which concerns on this invention. 1 is a schematic view of a vehicle interior product in which a vehicle interior sewing thread according to the present invention is applied to a stitch of a vehicle seat. It is the schematic diagram showing a mode when the string of a comparative example was cut | disconnected. It is the figure which showed the stitch (stitch) of an Example, FIG. 5 (a) is the schematic diagram seen from the front side of the cloth piece, FIG.5 (b) is the schematic diagram seen from the back side of the cloth piece FIG.5 (c) is sectional drawing cut | disconnected by the sewing part. It is the figure which showed a part of stitch (stitch) of a comparative example, FIG. 6 (a) is the schematic diagram seen from the front side of the cloth piece, FIG.6 (b) is seen from the back side of the cloth piece. FIG. 6C is a cross-sectional view cut at a sewing portion. It is the figure which showed a part of stitch (stitch) of a comparative example, FIG. 7 (a) is a schematic diagram seen from the front side of the cloth piece, FIG.7 (b) is seen from the back side of the cloth piece. FIG. 7C is a cross-sectional view cut at a sewing portion.

  Embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view of a car interior sewing thread according to an embodiment of the present invention. A vehicular interior sewing thread (hereinafter, also referred to as a main thread) according to an embodiment will be described by taking a triplet consisting of three single threads as an example. The main thread is a thread for sewing a vehicle interior, and is used for sewing a vehicle interior product.

  As shown in FIG. 1, the main yarn 10 is formed by twisting three single yarns 12a, 12b, and 12c dyed in mutually different colors. These three single yarns 12a, 12b, and 12c are each formed of a filament yarn.

  The material of the filament yarn is not particularly limited, but polyester fiber and nylon fiber are preferable from the viewpoint of durability and the like. The term “durability” as used herein means the strength of a thread that can withstand the load received from the upper part of the seam, the side surface, or the like in the years used as a vehicle interior after sewing. Of these, a more preferable material is polyester fiber. This is because when polyester fiber is used as the filament yarn, it is difficult to fade (excellent in weather resistance) even during long-term use.

  The single yarns (filament yarns) 12a, 12b, and 12c may be made of single fibers or may be formed by twisting a plurality of fibers. When it consists of a plurality of fibers, it may be composed of a single material or may be composed of two or more materials.

  In the main yarn 10, each of the single yarns 12a, 12b, and 12c is pre-dyed in each color before the three single yarns 12a, 12b, and 12c are twisted together. Thereby, a plurality of colors are combined when twisted together. In the main thread 10, the combination of a plurality of colors greatly increases the pattern of color expression on the stitches (stitches). For this reason, the special product power by the striped pattern which is not in a single color like the conventional filament thread for vehicle interior sewing improves. Depending on the color coordination and stitch pattern between the design color around the stitch and the stitch color, a marbling surface expression is possible, and the combinations are infinite. The dye used for dyeing the single yarns 12a, 12b, and 12c is not particularly limited, and a general dye that can be used as a dye for filament yarn can be arbitrarily applied.

  In the main yarn 10, three single yarns 12 a, 12 b, and 12 c that are preliminarily dyed in respective colors are twisted together. The twisted yarn does not converge only by twisting the single yarns 12a, 12b, and 12c dyed in advance. If it does so, it does not satisfy sewability and durability. Therefore, in the present invention, the three single yarns 12a, 12b, and 12c are twisted and then heated in a twisted state. When heated to a predetermined temperature, the single yarns 12a, 12b, and 12c contract, and the entire twisted yarn contracts by this contraction, thereby fixing the twisted shape. With this configuration, the main yarn 10 is prevented from returning to twist. As a result, fraying at the time of cutting and occurrence of thread bulge and duck at the time of sewing with a sewing machine can be suppressed, so that the sewing property and durability for sewing of vehicle interior products can be satisfied. Moreover, it is excellent also in design property.

  The heating temperature is not particularly limited, but a temperature necessary for fixing the twisted shape of the twisted yarn to a certain degree is secured, and the dyed dye is transferred to the adjacent single yarn or the dye is dyed. It is preferable to set the temperature range to prevent scattering from the single yarns 12a, 12b, and 12c due to sublimation or the like. Such a heating temperature is preferably in the range of 90 to 120 ° C., for example. More preferably, it is 100 degreeC. If the heating temperature is too lower than the specific range, the effect of fixing the twisted shape of the twisted yarn may be reduced. On the other hand, when the heating temperature is too higher than the specific range, dye transfer or scattering tends to occur.

  During the heating, for example, by applying an adhesive material to the twisted yarn, the effect of fixing the twisted yarn to the twisted shape can be further enhanced. In addition, one or more of the single yarns 12a, 12b, and 12c in the twisted yarn and one or more of the fibers in the single yarns 12a, 12b, and 12c are intentionally made to have fibers having a lower melting point or lower softening temperature than the other fibers. By incorporating it, the effect of fixing the twisted yarn to the twisted shape can be further enhanced even if the fibers are bonded to each other during the heating.

  The main yarn 10 includes a dyeing step for dyeing each of the single yarns 12a, 12b, and 12c into a predetermined color, and a twisting step for twisting the single yarns 12a, 12b, and 12c dyed in the respective colors into a twisted yarn. It can manufacture by passing through the heating process which heats the twisted twisted yarn and fixes it in the twisted shape. In the twisting step, the yarns of the single yarns 12a, 12b, and 12c dyed in the respective colors are twisted using a known twisting machine. In addition, you may pass through the oiling process of apply | coating oil after a heating process for the purpose of improving the sewing property of the main thread 10 or the like. At this time, by mixing the adhesive material in the oil used in the oiling step, the effect of further fixing the effect of fixing the twisted yarn in the twisted shape at the same time as the oiling can be obtained.

  In the main yarn 10, the single yarns 12a, 12b, and 12c may all have the same thickness, or at least one or more may have different thicknesses. The single yarns 12a, 12b, and 12c may all be made of the same material, or at least one or more may be made of different materials. In the main yarn 10, when at least one of the single yarns 12a, 12b, and 12c has a different thickness, or when at least one of the single yarns 12a, 12b, and 12c has a different material (texture), a unique texture can be obtained. , Expressive power may improve.

  Note that the kite yarn 10 according to the above-described embodiment is a three-color triplet yarn composed of three single yarns 12a, 12b, and 12c dyed in mutually different colors. The configuration is not particularly limited to this configuration.

  Among the plurality of single yarns constituting the kite yarn according to the present invention, ones dyed in the same color may be included. Specifically, the case where the kite yarn is composed of three single yarns will be described as an example, for example, a combination of red / red / white. In this case, two color gradations can be expressed with three single yarns. At this time, if the ratio of colors changes due to the inclusion of those dyed in the same color, a change in the striped pattern is also obtained, so that variations in expressive power can be further increased.

  The number of single yarns constituting the kite yarn according to the present invention may be two or more. This is because the twisted yarn can have at least two colors. However, the number of single yarns constituting the kite yarn is preferably an odd number because the gap when twisted is small and the twist can be settled well, or the shape can be made close to a circle. Specifically, there are 3, 5, 7, 9, etc. In addition, even if the number of single yarns is an even number, it can be said that the number of single yarns such as 6 is a preferable number because the twist is easy to stabilize. In the kite yarn according to the present invention, single yarns having different thicknesses can be combined for reasons such as filling a gap when twisted together.

  Here, in FIG. 2, the structure of the kite string which concerns on other embodiment is shown. 2A is a twisted yarn obtained by further twisting small twisted yarns 14a, 14b, 14c formed by twisting three single yarns 12a, 12b, 12c dyed in different colors. Has been. That is, the kite yarn 20 shown in FIG. 2 (a) is composed of nine single yarns twisted together. In addition, the circle drawn with the dotted line in Fig.2 (a) is the range occupied by the single yarn when the twisted three single yarns 12a, 12b, 12c are projected in the axial direction. The three single yarns 12a, 12b, and 12c twisted together are contained within this circle.

  In FIG. 2 (a), the three small twisted yarns 14a, 14b, and 14c are all shown as having the same color scheme, but the small twisted yarns 14a, 14b, and 14c are all different in color scheme. Or at least one having a color scheme different from that of the other small twisted yarns. In FIG. 2 (a), each single yarn in one small twisted yarn is shown as dyed in a different color, but in each single twisted yarn, any single yarn has the same color. It may be dyed, or at least one or more may be dyed in a different color from other single yarns.

  2 (b) is a twisted yarn obtained by further twisting small twisted yarns 16a, 16b, and 16c formed by twisting two single yarns dyed in different colors. That is, the kite thread 30 shown in FIG. 2 (b) is composed of six single yarns twisted together. In addition, the circle drawn with the dotted line in FIG.2 (b) is the range occupied by a single yarn, when two twisted single yarns are projected to an axial direction similarly to Fig.2 (a). Two twisted single yarns are contained within this circle.

  In FIG. 2 (b), the three small twisted yarns 16a, 16b, 16c are all shown as having different colors, but the small twisted yarns 16a, 16b, 16c are all of the same color. Or at least one having a color scheme different from that of the other small twisted yarns. In FIG. 2B, each single yarn in one small twisted yarn is shown as dyed in a different color, but in each single twisted yarn, any single yarn has the same color. It may be dyed.

  The kite thread according to the present invention having the above-described configuration is excellent in stitchability and durability for sewing a vehicle interior product, and is therefore suitable for, for example, the stitch 10 of the vehicle seat 40 as shown in FIG. Can be used. In addition to the vehicle seat 40, the present invention can be applied to vehicle interiors in general. Specifically, for example, it can be suitably used for sewing various vehicle interior products such as door trims, instrument panels (vehicle front panels), carpets, ceilings, and consoles.

  And the vehicle interior goods which concern on this invention are interior goods which sewed using the kite string which concerns on this invention. Specifically, for example, as shown in FIG. 3, a vehicle seat 40 that is sewn using the main thread 10 at the seam of the skin of the seat can be exemplified. In addition to the vehicle seat 40, examples of the interior parts of the vehicle that are sewn using the main thread 10 such as a door trim, an instrument panel, a carpet, a ceiling, and a console can be given. At this time, the main thread 10 is disposed on the design surface side (visible surface side) of the skin of the vehicle interior product, and the monochromatic back yarn disposed on the back side of the skin of the vehicle interior product, and the vehicle interior product It is preferable that it is sewn so as to intersect inside the outer skin. By using the main silk thread 10 only for the front thread, the sewing machine can be easily adjusted.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto.

(Example)
<Production of car interior thread 1 for sewing>
Polyester filament yarn (500d (denier)) dyed in red in advance, polyester filament yarn (500d (denier)) dyed in blue in advance, and polyester filament dyed in white in advance After twisting a single yarn (500d (denier)) with a twisting machine, this twisted yarn was heated at 100 ° C. for 1 hour to produce a kite yarn 1 for vehicle interior sewing according to the example.

<Configuration of back thread 2>
A monochromatic polyester filament yarn corresponding to JIS standard # 8 was used.

  The veneer thread 1 for vehicle interior sewing according to the above example was used as a front thread, and the polyester or genuine leather cloth piece 3 used for the vehicle seat was sewn together with the back thread 2. The results are shown in FIGS.

(Comparative example)
A vehicular interior sewing thread 4 according to a comparative example was produced in the same manner as in the example except that the twisted yarn was not heat-treated. Using the produced vehicle interior sewing kite thread 4 as a front thread, together with the above-described back thread 2, a cloth piece 3 of polyester or genuine leather was sewn in the same manner as in the example. The results are shown in FIGS. 6 (a) to (c) and FIGS. 7 (a) to (c).

  The twist 1 of the vehicle interior sewing thread 1 according to the example was not separated when cut with scissors. On the other hand, when the car interior sewing thread 4 according to the comparative example was cut with scissors, as shown in FIG. 4, three single threads were immediately separated. That is, the string 4 for vehicle interior sewing according to the comparative example was easily twisted.

  And when sewing is performed using the car interior sewing thread 1 according to the embodiment, since the twist of the thread 1 is not easily scattered, the front side of the cloth piece 3 as shown in FIG. As shown in FIG. 3, the seam was clean without causing the surface yarn (杢 thread 1) to swell in the twisted thickness. Further, as shown in FIG. 5B, when the back side of the cloth piece 3 was viewed, there was no occurrence of lumps in the back thread 2, and the seam of the back thread 2 was clean. This is because the front yarn (raft yarn 1) and the back yarn 2 are entangled neatly at the center of the cloth piece 3, as shown in FIG. And by using the kite thread 1 by such an Example, the design interestingness could be expressed also to the stitch.

  On the other hand, when sewing is performed using the vehicle interior sewing thread 4 according to the comparative example, the thread 4 is easily twisted, so that the thread 4 is twisted when sewing with a sewing machine. As shown in FIG. 6A, a portion swelled in the kite string 4 occurs on the front side of the cloth piece 3, and the design is deteriorated in this portion. Further, as shown in FIGS. 7 (b) and 7 (c), since the twist of the kite string 4 has returned and the kite string 4 has swelled, a surplus has been made in the table thread (string kite 4). ) Was exposed to the back side of the cloth piece 3, and there was a part that became a stagnation 5 on the back side. In this portion, as a result of the extra portion of the front yarn (raised yarn 4) being pulled to the back side, the stitches on the front side of the cloth piece 3 are clean as shown in FIG. Due to the effect of dama 5 generated on the back side of the sewing machine, it was caught when sewing with a sewing machine, and the sewing property was poor.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

10, 20, 30 Car interior sewing thread 12a, 12b, 12c Single yarn 14a, 14b, 14c Small twist yarn 16a, 16b, 16c Small twist yarn

Claims (3)

  Each of the single yarns constituting the filament yarn is pre-dyed in each color, and the plurality of single yarns are fixed in the twisted shape by being heated in a twisted state. The kite thread for vehicle interior sewing.   A vehicle interior product, wherein sewing is performed using the vehicle interior sewing thread according to claim 1.   The car interior sewing thread is arranged on the design surface side of the skin of the vehicle interior product, and intersects with the monochromatic back thread arranged on the back side of the skin of the vehicle interior product inside the skin of the vehicle interior product. The vehicle interior product according to claim 2, which is sewn as described above.

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