JP2017014666A - Cloth material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cloth material including a first yarn material of which the slipping is efficiently restricted.SOLUTION: A cloth material comprises both a conductive first yarn material 11 and a second yarn material which is more easily shrinkable than the first yarn material 11. The first yarn material 11 meanders due to the difference in shrinkage from the second yarn material 12. The first yarn material 11 includes a core yarn 20 having a conductive yarn 22, and a sheath yarn 30 spirally wound around the core yarn 20. The sheath yarn 30 includes a first sheath yarn 31 extending in the axial direction of the sheath yarn 30 and a second sheath yarn 32 spirally wound around the sheath yarn 31. The second sheath yarn 32 is flexible and more bulky than the first yarn 31.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cloth material including both a first thread material that can be energized (a thread material provided with a conductive thread) and a second thread material that contracts more easily than the first thread material.

  It is preferable that the seat cover of the vehicle seat can be used as an electrode or a heater of a capacitive sensor in consideration of the convenience of the seat. For example, since the woven fabric (an example of the cloth material) disclosed in Patent Document 1 is a face material that can be energized, it can be suitably used as the above-described seat cover. This fabric includes a first thread material that can be energized and a second thread material that contracts more easily than the first thread material as constituent threads. The first thread material includes, for example, a core thread (conductive thread) and a sheath thread (resin thread material) wound around the core thread in a spiral shape. Further, as the second thread material, a resin thread material that is more easily contracted than the first thread material is used.

  In the known technique, both the first yarn material and the second yarn material are used as constituent yarns of the woven fabric. At this time, while using the second yarn material for most of the woven fabric structure (constituent yarn), tissues having different contractility (a structure that easily contracts and a structure that does not easily contract) are alternately formed. Further, the first thread material is disposed between the structures having different contractility. Next, after finishing the fabric (liquid flow relaxation processing, heat treatment, etc.), it is used as a seat cover. At this time, the second yarn material contracts due to heating, so that the first yarn material is relatively It becomes long. Therefore, in the known technique, the first yarn material is partially pulled and meandered in the surface direction by varying the contraction degree of each tissue. By doing so, even if the first yarn material becomes relatively long, the first yarn material can be prevented from protruding from the fabric surface as much as possible. In the known technique, the above-described woven fabric is cut into a predetermined shape, and then sewn to another woven fabric using a sewing machine to create a seat cover. And by arranging the first thread material on the seat cover in a meandering manner (peaks and valleys are alternately formed in a front view), the first thread material is excessively tensioned and disconnected when the occupant is seated. Can be prevented as much as possible.

JP 2010-261116 A

  By the way, in the known technique, the first yarn material meanders non-uniformly by sliding with respect to the second yarn material during the weaving process or finishing process of the woven fabric (distribution is caused by uneven spacing between peaks and valleys). There is a concern that variations will occur. For this reason, at the time of sewing the seat cover, it may be difficult to specify the position of the first thread material, and there is a risk of disconnection due to contact with the sewing needle. However, the diameter of the first thread material can be made thicker (strengthening with the woven structure) to make it less slippery, but doing so will cause unevenness (foreign material feeling) in the seat cover and so on. Etc. get worse. In addition, the number of second thread materials entangled with the first thread material can be increased (strengthening of the first thread material is increased), but this may adversely affect the design of the seat cover. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to regulate the slippage of the first thread material in the cloth material with good performance.

  As means for solving the above-mentioned problems, the cloth material of the first invention includes both a first thread material that can be energized and a second thread material that is more easily contracted than the first thread material as constituent yarns. The first yarn material is arranged in a meandering manner due to a difference in contraction with the second yarn material. In this type of configuration, it is desirable that the slippage of the first yarn material in the cloth material can be regulated with good performance. Therefore, in the present invention, the first thread material has a core thread provided with a conductive thread (a thread material that can be energized) and a sheath thread that is wound around the core thread in a spiral shape. The sheath yarn has a first sheath yarn extending in the axial direction of the sheath yarn and a second sheath yarn wound in a spiral shape around the first sheath yarn, and the second sheath yarn is the first sheath yarn. It is bulkier than yarn and is flexible. In the present invention, the sheath yarn composed of the first sheath yarn and the second sheath yarn is wound around the core yarn (the diameter of the first yarn material is increased as much as possible), thereby slipping the first yarn material with respect to the second yarn material. Can be regulated. And since the flexible 2nd sheath thread (for example, crimped and sponge-like thread material) is arrange | positioned on the peripheral surface side of a sheath thread, it becomes a structure which does not have a bad influence on seating property as much as possible.

  The cloth material of the second invention is the cloth material of the first invention, wherein the sheath yarn is obtained by twisting the first sheath yarn and the second sheath yarn that is less likely to shrink than the first sheath yarn, and then overfeeding. It is heat shrunk while being applied. In the present invention, the second sheath yarn can be suitably arranged with respect to the first sheath yarn with a relatively simple configuration.

  According to the 1st invention concerning the present invention, slip of the 1st thread material in cloth material can be controlled with sufficient performance. Further, according to the second invention, the sliding of the first thread material in the cloth material can be more efficiently regulated.

It is a perspective view of a vehicle seat. It is a front view of a part of seat cover. (A) is a side view of a core yarn, (b) is a side view of a 1st thread material. (A) is a side view of the sheath thread in the middle of preparation, (b) is a side view of the sheath thread. It is a schematic front view of a part of a seat cover showing only some constituent yarns, (a) is a diagram before contraction, and (b) is a diagram after contraction. It is a graph which shows a test result.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each figure, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B to the rear of the vehicle seat, a reference symbol UP to the upper side of the vehicle seat, and a reference symbol DW to the lower side of the vehicle seat. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these seat components includes a seat pad (4P, 6P, 8P) that elastically supports an occupant by forming a seat outer shape, and a seat cover (4S, 6S, 8S) that covers the seat pad.

  In the present embodiment, a part of the seat cover 4S of the seat cushion 4 can be energized, and functions as an electrode or heater of a capacitance sensor (see FIGS. 1 and 2). That is, the first thread material 11 that can be energized and the second thread material 12 that is more easily contracted than the first thread material 11 are used for part (constituent thread) of the seat cover 4S (details of each thread material will be described later). ). Then, while utilizing the difference in contractibility between the first thread material 11 and the second thread material 12, a difference in length (yarn length difference) is generated between the two thread materials, and the first thread material 11 is moved in the surface direction. Arranged in a serpentine shape. And in this embodiment, the 1st thread | yarn material 11 has the core thread | yarn 20 and the sheath thread | strain 30 so that it may mention later (refer FIG.3 and FIG.4). And the sheath thread 30 is wound spirally around the core thread 20, but with this type of configuration, the first thread material 11 in the first skin piece 40f (cloth material) described later is capable of sliding. It is desirable to be able to regulate well (for example, satisfactorily). Therefore, in the present embodiment, the slip of the first thread material 11 is regulated with good performance with the configuration described later. Hereinafter, each configuration will be described in detail.

[Seat cover (cloth material)]
The seat cover 4S is a bag-like planar member, and can be formed by stitching a plurality of skin pieces (first skin piece 40f, second skin piece 40s, etc.) (see FIGS. 1 and 2). The first skin piece 40f is a substantially rectangular planar member that follows the center (seat surface) shape of the seat. In the present embodiment, the first skin piece 40f is formed using a cloth material, and includes a first thread material 11, a second thread material 12, and a connecting member 14 (the configurations of each thread material and members will be described later). ). Then, as will be described later, by electrically connecting the first skin piece 40f to the power source 9 via the connection member 14, the seat cover 4S can be made to function as an electrode or a heater of a capacitive sensor. . The second skin piece 40s is a planar member having a shape that follows the shape of the side of the seat, and can be formed of fabric (woven fabric, knitted fabric, nonwoven fabric), leather (natural leather, synthetic leather), or a composite material thereof. Note that a pad material 16 (typically a foam resin surface material) and a back base fabric 18 (for example, non-woven fabric) can be arranged in a laminated manner on the back surface side (side facing the seat pad) of each skin piece.

[First thread material]
The first thread material 11 is an electrically conductive covering material having a covering structure. The first thread material 11 includes a core thread 20 (conductive thread 22 and support thread 21) and a sheath thread 30 (first sheath thread 31 and second sheath thread 32). (See FIGS. 2 to 4). In the present embodiment, as will be described later, the sheath yarn 30 is wound around the core yarn 20 (the diameter of the first yarn material 11 is increased), thereby causing the first yarn material 11 in the first skin piece 40f to slip. regulate. At this time, the sheath thread 30 has a flexible second sheath thread 32 (for example, a thread material that is crimped and has a sponge-like feel), so that the seating property is not adversely affected as much as possible.

(Support yarn in core yarn)
The support yarn 21 is a thread material such as a spun yarn, a filament yarn, a drawn yarn, and a stretchable yarn (false twisted yarn or buckling yarn) (see FIG. 3). The support yarn 21 can be used by arranging a plurality of yarn materials, or a single yarn material can be used. The support yarn 21 (material) is not particularly limited, and examples thereof include plant-based and animal-based natural fibers, chemical fibers made of a thermoplastic resin or a thermosetting resin, and mixed fibers thereof. In natural fibers, cotton, hemp or wool is excellent in texture, so that it is preferably used as a constituent yarn of the first skin piece 40f (seat cover 4S). As chemical fibers, polyester fibers (for example, polyethylene terephthalate filaments) and nylon fibers are excellent in durability, texture and strength, and are therefore preferably used as constituent yarns of the first skin piece 40f (seat cover 4S).

(Conductive yarn in the core yarn)
The conductive yarn 22 is a conductive yarn material that can be energized, and typically has a specific resistance of 10 ⁰ to 10 ⁻¹² Ω · cm (preferably 10 ⁻³ to 10 ⁻⁷ Ω · cm) (FIG. 3). See). Here, “specific resistance (also referred to as volume resistivity)” is a physical property value used for comparing what kind of material is difficult to conduct electricity. For example, “JIS C2525 7.2.C volume resistivity”. "Can be measured in accordance with. Examples of this type of conductive yarn 22 include yarn materials such as metals (copper, aluminum, etc.) and alloys, plated wire materials, and carbon fiber filaments. The plated wire has a non-conductive or conductive wire (core material) and a plated layer of metal or alloy. Carbon fibers are polyacrylonitrile-based carbon fibers (PAN-based carbon fibers) and pitch-based carbon fibers. Among them, filaments of carbon fibers (carbonized fibers, graphitized fibers, graphite fibers) having a firing temperature of 1000 ° C. or higher have good electrical conductivity and can be suitably used as the conductive yarns 22 of the present embodiment. The conductive yarn 22 can be formed by a single conductive yarn 22 or can be formed by twisting a plurality of conductive yarns 22. In particular, when the diameter of the single conductive yarn 22 is large (for example, when the thickness exceeds 40 μm) or when a plurality of strands (conductive yarn 22) are twisted together, the bending stiffness of the conductive yarn 22 is increased and the support yarn is increased. Since it becomes easy to isolate | separate from 21, the structure (covering by the sheath thread mentioned later) of this embodiment is effective for separation prevention.

(Creating a core thread)
With reference to FIG. 3, the core yarn 20 is created by winding the conductive yarn 22 around the support yarn 21 in a spiral shape. By winding the conductive yarn 22 (typically, a thread material that hardly contracts) in this manner, the contractibility of the core yarn 20 (first thread material 11) is inferior to that of the second thread material 12. Here, the number of the conductive yarns 22 in the core yarn 20 is not particularly limited. For example, in this embodiment, the conductive yarn 22 is single-covered, so that the number of parts of the core yarn 20 can be suppressed and the manufacturing cost and the like can be reduced. A plurality of conductive yarns 22 can be wound around the support yarn 21. For example, one conductive yarn 22 is wound with Z twist, and the other conductive yarn 22 is wound with S twist (double covering). Thus, by varying the covering direction of each conductive yarn 22, it is possible to more reliably generate a yarn length difference from the second yarn material 12 (described later) while stabilizing the structure of the core yarn 20.

  The covering twist number of the conductive yarn 22 can be appropriately set according to the thickness (fineness) of the conductive yarn 22, the elongation difference from the support yarn 21, and the like. For example, a desired strength can be imparted to the core yarn 20 by setting the number of twists of the conductive yarn 22 in a range of 20 to 2000 T / m. Here, when the number of twists of the conductive yarn 22 is less than 20 T / m, the desired strength of the first yarn material 11 tends not to be obtained. If the number of twists of the conductive yarn 22 is greater than 2000 T / m, the stretchability and elasticity of the core yarn 20 may be excessively deteriorated. And it can be set as the core yarn 20 provided with the desired performance by setting the twist number of the electrically conductive yarn 22 in the range of 200-1500 T / m.

(First sheath yarn in sheath yarn)
The first sheath thread 31 is a thread material extending in the axial direction of the sheath thread 30, and is preferably relatively heat-shrinkable (see FIGS. 3 and 4). As the first sheath thread 31 of this type, for example, a thread material having a boiling water shrinkage ratio (shrinkage ratio before and after being put in hot water at 100 ° C. for 30 minutes) of 30 to 60% can be preferably exemplified. Examples of the first sheath yarn 31 (material) of this type include copolymer polyester fibers and copolymer nylon fibers. The fineness of the first sheath yarn 31 is not particularly limited, but is typically 10 to 200 dtex.

(Second sheath yarn in sheath yarn)
The second sheath yarn 32 is a flexible yarn material that is bulkier than the first sheath yarn 31 and is preferably less likely to contract than the first sheath yarn 31 (see FIGS. 3 and 4). As the second sheath thread 32 (material), for example, the material exemplified for the support thread 21 can be used. Then, the second sheath thread 32 can be made bulkier and more flexible than the first sheath thread 31 by performing a bulky process. Examples of this type of bulky processing include crimping processing (false twist processing, buckling processing, etc.) and fluffing processing (processing for scratching the surface of the yarn material with a member such as a tension to make it fluffy). The second sheath yarn 32 formed by crimping can be suitably used as the second sheath yarn 32 of the present embodiment because it has a soft and fluffy sponge-like feel. The fineness of the first sheath yarn 31 is not particularly limited, but is desirably larger than the first sheath yarn 31, and can be typically set in the range of 200 to 100 dtex.

(Creation of sheath yarn)
In this embodiment, the sheath thread 30 is formed by setting the second sheath thread 32 in a spirally wound state around the first sheath thread 31 (see FIG. 4B). Here, the method for producing the sheath yarn 30 is not particularly limited. For example, in this embodiment, the first sheath yarn 31 and the second sheath yarn 32 that is less likely to shrink than the first sheath yarn 31 are twisted together, and then overfeed is performed. (See FIG. 4 (a)). Here, the overfeed is to relax the second sheath yarn 32 that is more difficult to contract than the first sheath yarn 31 in a twisted state. The overfeed rate can be measured by, for example, the relationship between the feeding speed and the winding speed, and can typically be set to 10 to 50%.

  And the above-mentioned creation conditions can be appropriately set depending on the material of each sheath yarn. For example, polyethylene terephthalate (PET yarn) (33T / 12f / 1 inch) is used as the first sheath yarn 31, and PET yarn (167T / 36f / 1 inch) is used as the second sheath yarn 32. In this case, after twisting the first sheath yarn and the second sheath yarn and applying 30% overfeed (overfeed rate 30%), the heater (temperature 220 ° C.) is 0.8 seconds or longer. Let it stay. As a result, the first sheath yarn 31 is relatively contracted to be linear, and the second sheath yarn 32 is spirally wound around the first sheath yarn 31 (from the twisted structure to the covering). Become a structure). The first sheath yarn 31 can typically contract by 10 to 100% with respect to the second sheath yarn 32. Thus, in the present embodiment, the second sheath yarn 32 can be suitably arranged with respect to the first sheath yarn 31 with a relatively simple configuration. And by making the sheath thread 30 into a covering structure, the first sheath thread 31 bears the stress when the sheath thread 30 is pulled, and the core thread 20 is maintained while the second sheath thread 32 is contracted. Can be wound.

  The twist strength of the second sheath yarn 32 with respect to the first sheath yarn 31 can be set by, for example, a twist coefficient (twist strength associated with the thickness of the yarn) calculated by the following calculation formula 1. In this embodiment, the twist coefficient of the second sheath yarn 32 can be set in the range of 10 to 100, preferably in the range of 5 to 45, and more preferably in the range of 10 to 30. Formula 1: K (coefficient) = √ (D / 10,000) × T (D is total denier number (dtex), T is twist number (T / m))

[Create the first thread material]
Referring to FIG. 3, the first yarn material 11 is created by winding the sheath yarn 30 around the core yarn 20 in a spiral shape. In the present embodiment, the second sheath thread 32 is covered with the first sheath thread 31 (covering structure). For this reason, even if tension is applied and stretched when the sheath yarn 30 is wound around the core yarn 20, the first sheath yarn 31 bears the pulling force, so that the crimpability of the second sheath yarn 32 is lost as much as possible. There is nothing. Here, the number of sheath yarns 30 in the core yarn 20 is not particularly limited. For example, in this embodiment, the number of parts of the core yarn 20 can be suppressed, and manufacturing cost etc. can be reduced by carrying out the single covering of the sheath yarn 30. FIG. In this case, the covering direction of the sheath yarn 30 may be different from the twisting direction of the conductive yarn 22 as in this embodiment, or may be the same. A plurality of sheath threads 30 can be wound around the core thread 20. At this time, for example, one sheath yarn 30 is wound with Z twist, and the other sheath yarn 30 is wound with S twist (double covering). In this way, by varying the covering direction of each sheath yarn 30, the yarn length difference from the second yarn material 12 (described later) can be more reliably generated while the structure of the core yarn 20 is stabilized.

  Further, the covering twist number of the sheath yarn 30 can be appropriately set according to the thickness (fineness) of the sheath yarn 30, the elongation difference from the core yarn 20, and the like. For example, desired strength can be imparted to the core yarn 20 by setting the number of twists of the sheath yarn 30 in the range of 200 to 1500 T / m. Here, when the number of twists of the sheath yarn 30 is less than 200 T / m, the desired strength of the first yarn material 11 tends not to be obtained. On the other hand, when the number of twists of the sheath yarn 30 is more than 1500 T / m, the rigidity of the first yarn material 11 is increased, and the texture and feel of the obtained first skin piece 40f may be excessively deteriorated. And it can be set as the 1st thread material 11 provided with the desired performance by setting the twist number of the sheath thread 30 in the range of 400-1000 T / m.

[Second thread material]
The second yarn material 12 is a yarn material that is more easily contracted than the first yarn material 11, and can be exemplified by spun yarn, filament, drawn yarn, or stretchable yarn (false twisted yarn or buckled yarn) (in FIG. 2). For the sake of convenience, a reference numeral is given to a tissue portion in which the same thread material is used instead of the individual second thread material 12). Here, shrinkage includes shrinkage due to structural squeeze like false twisted yarn. Examples of the second thread material 12 (material) include plant-based and animal-based natural fibers, chemical fibers made of thermoplastic resin or thermosetting resin, and mixed fibers thereof. Here, the yarn length difference between the first yarn material 11 and the second yarn material 12 is not particularly limited, but the first yarn material 11 is preferably 10% to 45% longer than the second yarn material 12. If the yarn length difference between the two yarn materials is less than 10%, the first yarn material 11 may not be arranged in a meandering manner. If the difference in yarn length between the two yarn materials is greater than 45%, the first yarn material 11 may be excessively pulled due to the contraction of the second yarn material 12.

[Creation of seat cover (first skin piece)]
The first skin piece 40f is created using the first yarn material 11 and the second yarn material 12 as constituent yarns (see FIG. 2). For example, when creating the first skin piece 40f of woven fabric, the first yarn material 11 as the weft can be appropriately driven after warping the second yarn material 12 as the warp. Moreover, the 1st thread material 11 can also be used as a warp. When the first skin piece 40f of a knitted fabric (flat knitted fabric or the like) is created, the first yarn material 11 can be introduced into a part of the course direction or the wale direction.

  In this embodiment, with reference to the structure | tissue structure of Fig.5 (a), the 1st skin piece 40f of a textile fabric is created. And the part used as the base of the first skin piece 40f is formed with the 2nd thread material 12 (For example, the 2nd thread materials 12a-12c as a warp, The 2nd thread materials 12d-12i as a weft). At this time, the first yarn material 11 is used for a part of the weft and is woven along the width direction of the base portion. And by forming induction points 10a, 10b and restraint points 10c (both described later) by the second thread materials 12a to 12i, the first thread material 11 is arranged in a meandering manner due to a contraction difference with each second thread material 12. It was decided to. Here, each second thread material 12 (the thread material constituting the induction point and the restraint point) intersecting with the first thread material 11 may be a thread material constituting the surface design of the first skin piece 40f. What is the surface design? Irrelevant thread material may be used. For example, by using each second thread material unrelated to the surface design (not appearing on the surface side) for forming the induction points (10a, 10b) and the restraint points 10c, the influence on the surface design of the first thread material 11 is achieved. It can be eliminated as much as possible.

(Induction point)
The guide points (first guide point 10a, second guide point 10b) are portions that allow displacement of the first yarn material 11 in the surface direction of the first skin piece 40f, and a part of the warp yarn (second yarn material 12a, 12c) (see FIG. 5A). Here, the second yarn material 12a and the second yarn material 12c are arranged outward from the first yarn material 11 (weft yarn), and the first yarn material 11 can be prevented from protruding from the surface of the first skin piece 40f. . The first guiding point 10a has a yarn skipping length (weft skipping amount) on one side of the first yarn material 11 (upper side in FIG. 5) as viewed in the warp extending direction, and the first skin piece 40f. It is a place larger than other places. The second guiding point 10b is a portion where the yarn skipping length on the other side of the first yarn material 11 (the lower side in FIG. 5) is larger than the other portions when viewed in the direction in which the warp extends.

(Restriction point)
The restraint point 10c is a part where the range allowing the displacement of the first thread material 11 in the surface direction of the first skin piece 40f is smaller than the induction points (10a, 10b) (see FIG. 5A). The restraint point 10c of the present embodiment is composed of the warp other portion (second yarn material 12b) and is formed between the first induction point 10a and the second induction point 10b. In addition, the 2nd thread material 12b is arrange | positioned outward rather than the 1st thread material 11, and can control | jump out the 1st thread material 11 from the surface of the 1st skin piece 40f. The constraint point 10c of the present embodiment has a yarn skipping length on one side of the first yarn material 11 smaller than the first induction point 10a when viewed in the direction in which the warp extends, and a yarn on the other side of the first yarn material 11 The flying length is a portion smaller than the second guiding point 10b.

  Although the space | interval (length of one period) of the restraint point 10c and the induction | guidance | derivation point 10a (10b) is not specifically limited here, About 5-30 mm is preferable, More preferably, it is 10-25 mm. By setting the length of one cycle to about 5 to 30 mm, it is possible to suitably meander the first yarn material 11 (the conductive yarn 22 having excellent rigidity and being difficult to meander). Further, one or a plurality of induction points (10a or 10b) can be formed between the adjacent restraint points 10c. Here, since the first yarn material 11 is easily caught when the distance between the adjacent restraint points 10c is increased, warp yarns serving as a plurality of guide points for the wefts may be arranged between the adjacent restraint points 10c. Good. When a plurality of induction points are formed, the yarn skipping length of each induction point can be the same, and the yarn skipping length of each induction point can be matched to the meandering position (amplitude width) of the first yarn material 11. The thickness may be changed as appropriate.

  In addition, although the arrangement | positioning number of the 1st thread material 11 in the 1st skin piece 40f is not specifically limited, In order to exhibit various functions suitably, the several 1st thread material 11 is arrange | positioned in parallel with predetermined intervals. Preferably (see FIG. 2). For example, when the first skin piece 40f is provided with a heater function, the interval dimension W1 between the first thread materials 11 can be set to 1 mm to 60 mm. When the first skin piece 40f is provided with a sensor (electrode) function, it is desirable to set the interval dimension W1 between the first thread materials 11 within a range of 60 mm. If the interval dimension W1 between the first thread materials 11 exceeds 60 mm, the sensor function of the first skin piece 40f is deteriorated (capacitance is reduced) and may not function as an electrode. Preferably, the first skin piece 40f has a more suitable sensor function (capacitance) by setting the upper limit value of the interval dimension W1 of the first thread material 11 to 30 mm.

(Finishing process)
Then, after the first skin piece 40f is created, the first thread material 11 is arranged in a meandering manner due to a contraction difference with each second thread material 12 by performing a predetermined finishing process (FIGS. 2 and 5B). )). Examples of the finishing process include a scouring process, a dyeing process, a heat setting process, a texture-making process, a post-processing agent application process, a liquid flow relaxation process, and a finishing setting process. It is also possible to omit one or more steps. In each of the above steps, the first skin piece 40f is often subjected to heat treatment (dry heat treatment or wet heat treatment). For example, heat treatment at around 90 to 155 ° C. is often performed in a scouring or dyeing process or a liquid flow relaxation process. . By this heat treatment, each second thread material 12 in the first skin piece 40f contracts in the surface direction. In addition to the heat treatment, the second thread material 12 may contract in the surface direction by treatment with a chemical agent. In addition, the shrinkage | contraction of the 1st skin piece 40f has an effect also in the ground thickness feeling, elongation provision, and tailoring.

  In the present embodiment, in the above-described finishing process, the second thread material 12 relatively contracts, whereby the first thread material 11 (a thread material inferior in contractibility) is bent and deformed in a meandering manner. At this time, the first thread material 11 bends and deforms in a mountain shape at the guide points 10a and 10b, with the portion restrained at the restraint point 10c as a fulcrum. That is, the first thread material 11 is bent and deformed in a mountain-like manner toward the one side (upper side in FIG. 5) along the first induction point 10a, and the other side (FIG. 5) along the second induction point 10b. Deforms and deforms like a mountain toward the lower side. As described above, in the present embodiment, the first yarn material 11 from the first skin piece 40f is smoothly meandered in the surface direction at the induction points 10a, 10b, the restraint point 10c, and the like. Popping out can be prevented as much as possible. And in the 1st thread material 11 of this embodiment, the sheath thread 30 is wound around the core thread 20 (the diameter of the 1st thread material 11 is made thick), and the 1st thread material 11 with respect to the 2nd thread material 12 Slip can be regulated. For this reason, the plurality of first thread materials 11 meander non-uniformly by sliding individually with respect to the second thread material 12 (distribution varies due to uneven spacing between peaks and valleys). Avoided as much as possible.

[Creating a seat cover]
With reference to FIG. 2, each first thread material 11 is arranged in the sheet width direction by adjusting the direction of the first skin piece 40f (cloth material). Next, the connection member 14 is arrange | positioned at the both terminal parts of the 1st skin piece 40f (cloth material), respectively. Here, the connecting member 14 is a member that electrically connects each first thread material 11 and the power source 9, and as in this embodiment, a band (conductive tape, conductive cloth) or a wire (conductive wire) is used. It can be illustrated. Then, each connecting member 14 is electrically connected to both ends of each first thread material 11 while being sewn to the first skin piece 40f. Then, the first skin piece 40f can be energized by connecting the pair of connecting members 14 to the power source 9 via a power cable (not shown). By doing so, the seat cover 4S (first skin piece 40f) can be made to function as, for example, a heater (the seat configuration is excellent in convenience).

  Then, before and after the above work, a bag-like seat cover 4S is created while sewing a plurality of skin pieces (first skin piece 40f, second skin piece 40s, etc.) with a sewing machine (not shown). At this time, the first thread material 11 of the present embodiment meanders as uniformly as possible with the slippage with respect to the second thread material 12 restricted as described above. Therefore, the position of each first thread material 11 (conducting thread 22) can be easily specified, so that disconnection due to contact with the sewing needle can be suitably prevented.

[Use of seat cover]
Referring to FIGS. 1 and 2, the seat cover 4S is used as a heater or the like while being disposed on the seat pad 4P. In each first thread material 11 of the present embodiment, as described above, the conductive thread 22 in FIG. 3 is preferably prevented from being disconnected by contact with the sewing needle. Further, referring to FIG. 3, since a flexible second sheath thread 32 (for example, a crimped and sponge-like thread material) is disposed on the peripheral surface side of the sheath thread 30, the seating property is not adversely affected as much as possible. It becomes composition. For this reason, according to this embodiment, the performance deterioration of the first skin piece 40f (for example, the cutting of the conductive yarn 22, the feeling of foreign matter, and temperature unevenness) can be suitably prevented. In the present embodiment, the first thread material 11 is arranged in a meandering manner on the seat cover 4S. Therefore, even when a force is applied in the width direction of the seat cover 4S, the seat cover 4S bears the force by deforming the first thread material 11 (meandering shape) into a straight line, and the first thread material 11 Disconnection can be suppressed without applying excessive force.

  As described above, in the present embodiment, the sheath yarn 30 including the first sheath yarn 31 and the second sheath yarn 32 is wound around the core yarn 20 (the diameter of the first yarn material 11 is increased as much as possible). The sliding of the first thread material 11 with respect to the double thread material 12 can be regulated. And since the flexible 2nd sheath thread 32 (for example, crimped and sponge-like thread material) is arrange | positioned on the surrounding surface side of the sheath thread 30, it becomes a structure which does not have a bad influence on seating property as much as possible. At this time, in the present embodiment, the sheath yarn 30 can be wound around the core yarn 20 without breaking the texture (for example, the crimped state) of the second sheath yarn 32 as much as possible. For this reason, according to this embodiment, the slip of the 1st thread | yarn material 11 in the 1st skin piece 40f (cloth material) can be controlled with sufficient performance.

Hereinafter, although this embodiment is described based on an example, the present invention is not limited to the example. The following [Table 1] and [Table 2] show the configurations of the first yarn materials of Examples and Comparative Examples, and details of these first yarn materials and the cloth materials using the first yarn materials will be described later.

[Example 1]
In this example, a thread material in which seven SUS304 wires (wire diameter 20 μm) were twisted into S twist at 1500 T / m was used as the conductive yarn. The surface of the conductive yarn was covered with a resin film (PFA, film thickness 50 μm). Further, PET yarn (280T / 48f) was used as the support yarn. As the core yarn, a conductive yarn and a yarn material that was double-covered at 500 T / m (number of turns) in the Z twist direction with respect to the support yarn were used. In this example, a high shrinkage PET yarn (33T / 12f) having high shrinkage during heat treatment was used as the first sheath yarn. In addition, a false twisted PET yarn (167T / 36f) that had already been treated at 220 ° C. was used as the second sheath yarn. And as a sheath yarn, the yarn material which twisted the 1st sheath yarn and the 2nd sheath yarn at 150 T / m, and was thermally shrunk while applying 20% overfeed was used (temperature 220 ° C., residence time: 0. 0). 8 seconds, shrinkage of the first sheath thread: 15%). As the first yarn material, a sheath material was used that was covered with the core yarn in the S twist direction at 2000 T / m.

  In this example, the first thread material was driven in the weave structure (meandering structure) in FIG. 5 to create a woven fabric (fabric at the production stage). As the second yarn material, PET yarn (84T-36f, Z = 130 T / m) was used. Next, as a dyeing finishing process, a fluid relaxation process using a high-pressure liquid dyeing machine was performed on the fabric, and the fabric after the dyeing finishing process was used as the fabric material of Example 1. The processing conditions at this time were set to a preset temperature: 100 ° C., a temperature increase rate of 2 ° C./min, a temperature decrease rate of 1 ° C./min, a holding time of 20 min, and a residence speed of 140 m / min. The fabric material of Example 1 had a vertical shrinkage of 10% and a horizontal shrinkage of 23%.

[Example 2]
In Example 2, the core yarn of Example 1 was used. Further, as the sheath yarn, a yarn material that was heat-shrinked while applying 30% overfeed after twisting the first sheath yarn of Example 1 and the second sheath yarn of Example 1 at 150 T / m was used ( Temperature 220 ° C., residence time: 0.8 seconds, shrinkage of first sheath yarn: 30%). The other conditions were set the same as in Example 1, and the fabric material of Example 2 was created.

[Example 3]
In Example 3, the core yarn of Example 1 was used. As the sheath yarn, the first sheath yarn of Example 1 and the second sheath yarn (PET yarn, 450T / 108f) were twisted at 150 T / m, and then heat-shrinked while applying 15% overfeed. (Temperature 220 ° C., residence time: 0.8 seconds, first sheath yarn shrinkage: 15%). The other conditions were set the same as in Example 1, and the fabric material of Example 3 was created.

[Comparative Example 1]
In Comparative Example 1, the core yarn of Example 1 was used. As the sheath yarn, only a thread material obtained by heat shrinking the second sheath yarn (PET yarn, 167T / 72f) by 30% was used. The other conditions were set the same as in Example 1, and the fabric material of Comparative Example 1 was created.

[Comparative Example 2]
In Comparative Example 2, the core yarn of Example 1 was used. As the sheath yarn, only a thread material obtained by heat shrinking the second sheath yarn (PET yarn, 900T / 216f) by 30% was used. The other conditions were set the same as in Example 1, and the fabric material of Comparative Example 2 was created.

[Evaluation test of slip amount and confirmation test of foreign object feeling]
Sliding amount evaluation test: Using the woven fabric stage of each example and each comparative example, the length of the core yarn in a meandering half cycle (N = 10) was measured, and the maximum value and the minimum value Difference (R value (μm)) was calculated (see FIG. 6). As a method for measuring the length of the first thread material during the meandering 1/2 cycle, a digital microscope (manufactured by KEYENCE, VHX-1000) is used, and the meandering 1/2 cycle is magnified 50 times and projected. The inner length of the first thread material was measured. Similarly, using the fabric material (finished fabric) of each example and each comparative example, the length of the core yarn during the meandering half cycle (N = 10) was measured and the maximum value was obtained. And the difference between the minimum values (R value) was calculated. Here, in the evaluation test of the slip amount, the higher the R value, the more mean that each first thread material meandered non-uniformly by sliding with respect to the second thread material. Test for confirming foreign material sensation: A woven fabric made only of the second yarn material was made as a blank. And the cloth material of each Example and each comparative example was touched with the palm, and it was investigated whether there was a foreign material feeling compared with a blank.

[Test results and discussion]
Referring to FIG. 6, in Comparative Example 1, it was found that the R value was high both in the raw machine stage and in the stage after finishing, and the ten first yarn materials meandered unevenly. In contrast, in Examples 1 to 3, it was found that the R value was low in both the raw machine stage and the stage after finishing, and the ten first yarn materials meandered relatively uniformly. This is presumably because the sheath yarn was wound around the core yarn (the diameter of the first yarn material was increased), and the sliding of the first yarn material relative to the second yarn material could be suitably controlled. Moreover, although the foreign material feeling was in Comparative Example 2, there was no foreign material feeling in the cloth materials of Examples 1 to 3 and Comparative Example 1 (the feel was similar to that of the blank). This is considered because the flexible second sheath yarn is arranged on the peripheral surface side of the sheath yarn in the cloth materials of Examples 1 to 3. From this, it was found that according to the cloth materials of Examples 1 to 3, the slippage of the first thread material in the cloth material can be regulated with good performance.

  The cloth material of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In this embodiment, although the structure of the 1st thread material 11 was illustrated, it is not the meaning which limits the structure of a 1st thread material. For example, the core yarn can be composed only of a conductive yarn. Moreover, the preparation method of a sheath thread is not limited to an Example. In the present embodiment, the woven fabric including the guide points 10a and 10b and the restraint point 10c has been described as an example of the cloth material. However, the configuration (structure structure or the like) of the cloth material is not limited.

  Moreover, in this embodiment, the example (example of functioning as a heater) which attached a pair of connection member 14 to the both ends of the 1st skin piece 40f (cloth material) was demonstrated. In contrast, when the first skin piece functions as an electrode of the capacitive sensor, a connection member (single member) can be attached to one side of the skin piece, for example. Moreover, in this embodiment, the example which produces the 1st skin piece 40f with a cloth material was demonstrated. A cloth material can be used as other skin pieces, such as a 2nd skin piece other than a 1st skin piece, for example. In addition to seat cushion seat covers, it can also be used for seat backs and headrest seat covers. In the present embodiment, the vehicle seat has been described as an example. However, the configuration of the present embodiment can be applied to all vehicle seats such as a vehicle, an aircraft, and a train, and the vehicle configuration such as a vehicle interior ceiling and a vehicle interior wall. It can also be applied to members and clothing.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 9 Power Supply 4S Seat Cover 4P Seat Pad 11 First Thread Material 12 Second Thread Material 14 Connection Member 20 Core Yarn 21 Support Yarn 22 Conductive Yarn 30 Sheath Yarn 31 First Sheath Yarn 32 Second sheath yarn 40f First skin piece (cloth material of the present invention)
40s 2nd skin piece

Claims (2)

Both the first thread material that can be energized and the second thread material that contracts more easily than the first thread material are included as constituent threads, and the first thread material is meandering due to the difference in contraction with the second thread material. In the cloth material to be placed in
The first thread material has a core thread provided with a conductive thread, and a sheath thread wound in a spiral around the core thread,
The sheath yarn has a first sheath yarn extending in the axial direction of the sheath yarn and a second sheath yarn wound spirally around the first sheath yarn, and the second sheath yarn is A cloth material which is bulkier than the first sheath yarn and is flexible. The cloth material according to claim 1, wherein the sheath yarn is formed by twisting the first sheath yarn and the second sheath yarn that is less likely to shrink than the first sheath yarn, and then thermally contracting while applying overfeed. .

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