JP5885456B2 - Step dyed yarn manufacturing method and step dyed yarn - Google Patents

Description

  The present invention relates to a method for producing a step dyeing yarn and a step dyeing yarn, and more particularly to a method for producing a step dyeing yarn and a step dyeing yarn suitable for use in sewing a vehicle interior material.

  Conventionally, a step dyed yarn dyed in a stepwise manner by a plurality of colors is known (Patent Documents 1 and 2). As a sewing thread used for sewing a vehicle interior material such as a vehicle seat, trim, and instrument panel, a filament thread is generally used because of its strength and light resistance.

JP-A-60-2787 Japanese Patent Publication No.54-4435

  The filament yarn that is suitable for sewing interior materials for vehicles is different from yarn made of short fibers such as spun yarn because one single yarn is long fiber. It has the property of being easily mixed at the boundary. For this reason, it has been difficult to clarify the boundary of the step dyeing color in the filament yarn.

  And the color mix was only a success. For example, when similar colors (similar colors) such as red and orange are adjacent to each other, a gradation effect may be obtained by mixing colors, but the color pitch may change depending on how the colors are mixed. It was. In addition, for example, when opposite colors (contrast colors) such as red and blue are adjacent to each other, the color may be blackish brown depending on how the colors are mixed, which may deteriorate the appearance.

  As described above, in the step dyeing of the filament yarn, the boundary of the color of the step dyeing could not be clarified, and the color mixture was only in progress, so it was difficult to produce the target pattern. This is because the color boundary cannot be controlled in the step dyeing of the filament yarn.

  The problem to be solved by the present invention is to provide a method for producing a step dyed yarn and a step dyed yarn which can control the boundary of the color of the step dye in the filament yarn used for sewing the interior material for the vehicle.

  In order to solve the above problems, a method for producing a step dyed yarn according to the present invention includes a step of dyeing a filament yarn, and the step of dyeing the filament yarn is performed before the filament yarn is step dyed. When performing, a dye which is applied to one area is suppressed between areas where different colors are given to each other, and an adsorbent which prevents the other area from penetrating is added, and adjacent to each other at the time of step dyeing. The gist is that the degree of mixing of colors is controlled.

  The above-mentioned dye suppressant suppresses the permeation of the dye applied to one region into the other region between the regions where the different colors of the filament yarn are attached to each other. The degree of mixing is controlled. Therefore, according to the manufacturing method of the step dyeing yarn having such a configuration, the boundary of the step dyeing color can be controlled. Even if the penetration of the dye imparted to one region by the above-described depressant into the other region is not completely suppressed, the degree of color mixing is sufficiently controlled by suppressing the penetration to some extent. If the permeation is suppressed to a considerable degree, the degree of color mixing is controlled to the point where the boundary of the color of step dyeing is clarified.

  At this time, if the filament yarn is step dyed in a state where pressure is applied to the portion of the filament yarn that has been attached with the dye inhibitor, the pressure applied to the other region of the dye applied to one region can be increased. Since the permeation is further suppressed, it is possible to more easily control the mixing condition of adjacent colors at the time of step dyeing.

  And the step dyeing yarn according to the present invention comprises a dye-suppressing agent that prevents the dye applied to one region from penetrating into the other region between the regions where the filament yarns are colored differently. The gist is that it is step-dyed after or at the same time as applying the above-mentioned depressant.

  According to the stage dyeing yarn having such a configuration, the degree of mixing of adjacent colors at the time of stage dyeing is controlled by the suppressor, and therefore the boundary of the color of the stage dyeing is controlled.

  According to the method for producing a step dyeing yarn according to the present invention, since the degree of mixing of adjacent colors at the time of step dyeing is controlled by the above-described inhibitor, the boundary of the color of the step dyeing that has been conventionally achieved only by the course is achieved. Any color tone can be controlled. As a result, it becomes possible to clarify the boundary between the colors of the step dyeing and to obtain a pattern aimed at the step dyeing.

It is a cross-sectional schematic diagram explaining the dyeing | staining process of the manufacturing method of the step dyeing yarn which concerns on this invention. FIG. 2 is a schematic cross-sectional view showing, in an enlarged manner, a region to which an inhibitor is attached in the infection treatment of FIG. 1. It is a cross-sectional schematic diagram explaining the dyeing process of the manufacturing method of the step dyeing yarn which concerns on this invention. It is a schematic diagram of the step dyeing yarn which concerns on one Embodiment of this invention. It is the schematic diagram which applied the step dyeing yarn by the manufacturing method concerning the present invention to the stitch of the vehicular seat.

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

  The method for producing a step dyed yarn according to the present invention includes a suppression process for attaching a dye inhibitor to a predetermined position of the filament yarn, and a dyeing step for performing the step dyeing of the filament yarn. FIG. 1 and FIG. 2 are schematic cross-sectional views illustrating the dyeing treatment process, and FIG. 3 is a schematic cross-sectional view illustrating the dyeing process. In the present invention, the suppression treatment process and the dyeing process are performed using a predetermined upper mold and lower mold.

  In the dyeing process, the filament yarn 10 is sandwiched and fixed between the upper die 20 and the lower die 30 as shown in FIG. The upper mold 20 used in the dyeing treatment process is fixed to the lower mold 30 by a fixing jig (not shown) such as a clamp or a screw. The upper die 20 is for separating the filament yarn 10 into a region 14 to which the dyeing agent is applied and a region 12 to which the dyeing agent is not applied to attach the dyeing agent to a predetermined position of the filament yarn 10. It is.

  The upper mold 20 used in the decontamination process has a rectangular appearance, and as shown in FIG. 1, the depressant flow passage 22 for flowing the decontaminant from the upper side to the lower side is arranged vertically. A plurality are formed so as to penetrate in the direction. The width of the upper part of the dye passage 22 is narrower than that of the middle part and the lower part. The upper portion is connected to a supply pipe 48 extending from the tank 46 in which the antiseptic 44 is accommodated, and the tank 46 passes through the supply pipe 48 to the antiseptic flow path 22 of the upper mold 20. And the antiseptic 44 is carried. Between the antiseptic flow path 22 and the depressant flow path 22 of the upper mold 20 is a depressant partition wall 24 that separates the depressant flow path 22 from each other. It is a part that separates the dye flow passages 22 and presses the filament yarn 10 from above. Therefore, the filament yarn 10 is pressed from above by the stain barrier 24 of the upper mold 20. Then, the filament yarn 10 is divided into a region 14 to which the dye is applied and a region 12 to which the dye is not applied by the barrier 24 and the dye flow passage 22 of the upper mold 20. The region 14 to which the dyeing agent is applied is a region between the region to which the dye is applied (the region to which the color is added) and the region (boundary) in the dyeing process described later, and no dyeing agent is added. The region 12 is a region to which a dye is applied (region to which a color is applied) in a dyeing process described later.

  As shown in FIG. 2, a seal portion 26 having a convex shape toward the bottom (front end) is formed in a portion near the antiseptic flow path 22 at the front end of the antiseptic partition wall 24. The seal portion 26 is formed of an elastic material such as silicone resin, and the airtightness of the antiseptic flow path 22 is secured by the elasticity, and the antistain is outward from the antiseptic flow path 22. The penetration of the agent 44 is suppressed. Further, the airtightness is further enhanced by the stress concentration at the tip of the convex portion. In FIG. 2, the two convex portions are double-sealed, and the airtightness is further enhanced by multiple sealing in this way. Therefore, according to this, the dyeing agent 44 is accurately applied to the portion of the filament yarn 10 that faces the lower opening of the dyeing agent flow passage 22.

  As shown in FIG. 1, the lower die 30 used in the dyeing treatment process includes a flat plate-like lower die main body portion 32 on which the filament yarn 10 is placed. In the position opposite to the lower opening of the upper mold 20 used in the process, the depressant discharge hole 36 for discharging the surplus depressant 44 is vertically formed. The lower mold 30 is used in common with a dyeing process described later, and is also used in the dyeing process. For this reason, in the lower die main body 32, a dye discharge hole 38 for discharging excess dye is formed in a vertically penetrating manner at a position facing the tip of the partition wall 24 of the upper mold 20 used in the dyeing process. Has been. Below the lower mold main body 32, a lower mold discharge section 34 is defined in which a dye discharge path 40 communicating with the dye discharge hole 36 and a dye discharge path 42 communicating with the dye discharge hole 38 are defined. Is formed to extend.

  The upper die 50 used in the dyeing process has a rectangular appearance, and as shown in FIG. 3, a dye flow passage 52 for passing the dye from the upper side to the lower side penetrates in the vertical direction. A plurality are formed. A dye partition 54 separating the dye flow passage 52 and the dye flow passage 52 is provided. The dye partition 54 separates the dye flow passage 52 and presses the filament yarn 10 from above. It has become. The dye partition wall 54 is located in the region 14 where the dye yarn 10 depressant is applied, and presses this portion. The dye partition wall 54 presses the filament yarn 10, so that the regions 12, 12,... Corresponding to the lower openings of the dye flow passage 52 are colored with respect to the filament yarn 10. The area 12 is partitioned.

  Inside the partition wall 54 for the dye, a gas flow passage 56 for passing a gas such as air from the upper side to the lower side is formed so as to penetrate in the vertical direction. The yarn 10 can be blown (pressurized) to the portion of the yarn 14 where the dye inhibitor is attached. Although not shown, the dye partition wall 54 may be provided with a seal portion as shown in FIG. 2 at a portion close to the dye flow passage 52 at the tip that contacts the filament yarn 10. Thereby, since the airtightness of the dye flow path 52 is further increased, the dye is applied to the portion of the filament yarn 10 facing the lower opening of the dye flow path 52 with high accuracy.

  As described above, the lower mold 30 used in the dyeing process is shared with the lower mold 30 used in the dyeing process, but the lower mold main body 32 is used for the upper mold 50 used in the dyeing process. The dye discharge hole 38 is formed at a position facing the lower opening of the dye flow passage 52.

  Next, a description will be given of an anti-staining process performed using the upper mold 20 and the lower mold 30 having such a configuration. In the dyeing treatment step, first, the filament yarn 10 is placed on the lower die main body 32 and is sandwiched and fixed between the upper die 20 and the lower die 30. The filament yarn 10 is placed on the lower die main body 32 in the form of a skein yarn in a loop shape, for example. Next, the depressant 44 is supplied from the tank 46 containing the depressant 44 to the depressant flow passage 22 of the upper mold 20 via the supply pipe 48. The dyeing agent 44 supplied to the dyeing agent flow passage 22 flows into a portion of the filament yarn 10 facing the lower opening of the dyeing agent flow passage 22 and is applied to this portion. Excess dye 44 is discharged from the dye discharge path 40 through the dye discharge hole 36 below. Next, the upper mold 20 is removed from the lower mold 30. As a result, the staining agent 44 is applied between the region 12 and the region 12 where the color of the filament yarn 10 is applied.

  When supplying the depressant 44 to the depressant flow passage 22 of the upper mold 20, suction (decompression) is performed in the direction of arrow A in FIG. I do. Thereby, the dyeing agent 44 can be spread over the area | region 14 to which the dyeing agent of the filament yarn 10 is provided (application | coating). Further, it is possible to reliably discharge the surplus depressant 44. The width of the region 14 to which the dye dye 10 is applied (applied) can be changed by adjusting the width of the lower opening of the dye dye flow passage 22.

  Subsequently, the dyeing process will be described. In the dyeing process, the lower mold 30 that is the same as the lower mold 30 used in the staining process is used, and only the upper mold is replaced. By sharing the lower mold 30 in the dyeing process and the dyeing process, it is not necessary to move the filament yarn 10 coated with the dyeing agent 44 from the lower mold 30, and therefore, by shifting from the dyeing process to the dyeing process. It is possible to prevent the boundary of the step dyeing from shifting. That is, this prevents the boundary of the step dyeing from shifting.

  With respect to the lower mold 30, the upper mold 50 used in the dyeing process is arranged such that the dye partition wall 54 is located in the portion of the filament yarn 10 where the dyeing agent is attached in the region 14 where the dyeing agent is applied. Set to. The position where the upper die 50 is set with respect to the lower die 30 is set in advance with a positioning pin or the like. The upper mold 50 used in the dyeing process is fixed to the lower mold 30 by a fixing jig such as a screw. When the entire filament yarn 10 is dyed, it is accommodated in the upper mold 50 as shown in FIG. For example, when the loop-shaped end portion of the filament yarn 10 is not dyed, the end portion of the filament yarn 10 may be outside the upper die 50 without being completely contained in the upper die 50.

  Next, the dye is supplied from the upper opening of the dye flow passage 52 of the upper mold 50. The dye is not particularly limited, and a general dye used as a dye for filament yarn can be arbitrarily applied. In the present invention, since filament yarn is step dyed, different color dyes are supplied to adjacent dye flow paths. Although not limited to the following configuration, for example, an example of performing step dyeing with three color dyes will be described. In FIG. 3, the dye X is supplied to the dye flow passage 52a, and the dye is supplied to the dye flow passage 52b. Y is supplied, and the dye Z is supplied to the dye flow passage 52c. The dyes X to Z supplied to the dye flow paths 52a to 52c flow into the portions of the filament yarn 10 facing the lower openings of the dye flow paths 52a to 52c, respectively, and are applied to the portions. At this time, excess dye is discharged from the dye discharge path 42 through the dye discharge hole 38 below. Next, the upper mold 50 is removed from the lower mold 30. As a result, adjacent regions of the filament yarn 10 are given different colors.

  When supplying the dye to the dye flow passage 52 of the upper mold 50, suction (decompression) is performed in the direction of arrow B in FIG. Thereby, it is possible to distribute the dye firmly in the region 12 where the color of the filament yarn 10 is applied. Moreover, excess dye can be discharged reliably.

  Through this dyeing process, the filament yarn 10 is step dyed. Since the single filament yarn is a long fiber, the filament yarn 10 has a property of easily penetrating out of the range where the dye is applied, unlike a yarn composed of short fibers such as a spun yarn. For this reason, in this invention, it suppresses that the dye permeate | transmits freely from the range to which the dye was attached | subjected by the inhibitor 44. FIG. That is, the depressant 44 controls the mixing of adjacent colors by suppressing the penetration of the dye.

  Suppressing the penetration of a dye broadly means reducing the amount or range of the dye that penetrates, and also includes preventing the dye from penetrating at all. The degree of suppression is adjusted by the type of the staining agent 44, the application range (width), the application amount (concentration), and the like. By adjusting the degree of suppression, the degree of mixing of adjacent colors is controlled. Examples of the depressant 44 include water-repellent materials such as silicone oil and fluororesin processing agents. Silicone oil and the like are preferable in that they are particularly excellent in the effect of reducing the amount and range of penetration of the dye.

  In this dyeing process, pressure (pressing force) is applied to the portion of the filament yarn 10 to which the dyeing agent is attached by the dye partition 54 of the upper die 50 that is in contact with the portion of the filament yarn 10 to which the dyeing agent is attached. Is on. That is, since the filament yarn 10 is step-dyed in a state where pressure is applied to the portion of the filament yarn 10 to which the dyeing agent is applied, this also causes the region 14 of the filament yarn 10 to which the dyeing agent is attached. The penetration of the dye into the ink is suppressed, and the mixing of adjacent colors is controlled.

  The pressing amount (pressing force) of the dye partition wall 54 of the upper mold 50 can be adjusted with an accompanying screw 58. By adjusting the pressing amount (pressing force), the amount of dye penetrating into the region 14 of the filament yarn 10 to which the dye-staining agent is applied is adjusted, and the degree of mixing of adjacent colors is controlled.

  Further, in this dyeing step, gas is supplied from the upper side of the upper mold 20 to the gas flow passage 56 formed inside the dye partition wall 54 in the direction of arrow C in FIG. The attached portion is blown (pressurized) to create a wind wall between the region 12 to be colored and the region 12. At the same time, the lower mold 30 also uses a depressant discharge path 40 connected to the portion of the filament yarn 10 with the depressant, and supplies gas in the direction of arrow D in FIG. Air blowing (pressurization) is performed on the portion of the yarn 10 to which the dyeing agent is applied.

  In this way, by performing step dyeing of the filament yarn 10 in a state in which pressure by blowing is applied to the portion of the filament yarn 10 to which the dyeing agent is attached, the region 14 to which the dyeing agent of the filament yarn 10 is attached is obtained. Permeation of the dye is suppressed. At this time, by adjusting the wind pressure, the penetration amount of the dye and the like are adjusted, and the mixing condition of adjacent colors is controlled. The blowing to the predetermined portion is started before supplying the dye to the filament yarn 10 or simultaneously with supplying the dye to the filament yarn 10.

  After the dye is applied to the filament yarn 10, a treatment according to a conventional method is performed. Specifically, the filament yarn 10 to which the dye is applied is usually removed from the mold and dried, and the dye is fixed to the filament yarn 10 by heating or the like, and then washed. Further, if necessary, oil treatment is performed for the purpose of improving the sewing property. It should be noted that the dye inhibitor 44 may be removed from the filament yarn 10 by a treatment such as washing if the filament yarn 10 is dyed.

  Although it does not specifically limit as the filament yarn 10 applied to this invention, From viewpoints, such as durability, a polyester fiber, a nylon fiber, etc. are mentioned as a preferable thing. The term “durability” as used herein refers to the strength of the yarn that can withstand the load received from the upper part of the seam or the side surface in the years used as the vehicle interior material after sewing. Of these, a more preferable material is polyester fiber. This is because when a polyester fiber is used as the filament yarn 10, it is difficult to fade (long weather resistance) even when used for a long time.

  The filament yarn 10 applied to the present invention may be composed of a single yarn, or may be composed of a twisted yarn obtained by twisting a plurality of single yarns. The number of single yarns is not particularly limited. When the filament yarn 10 is composed of a plurality of single yarns, the plurality of single yarns may all be of the same thickness, or at least one may be of a different thickness. . Further, the plurality of single yarns may all be made of the same material, or at least one or more may be made of different materials. The single yarn may be composed of a single fiber, or may be configured 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.

  According to the step dyed yarn manufacturing method according to the present invention described above, before the filament yarn 10 is step dyed, it is applied to one region between the region 12 and the region 12 to which different colors are applied. In order to control the mixing of adjacent colors at the time of step dyeing, a stain dye 44 that prevents the dye from penetrating into the other region was controlled. The border can be controlled in any tone. As a result, it becomes possible to clarify the boundary between the colors of the step dyeing and to obtain a pattern aimed at the step dyeing.

  Then, for example, a step dyed yarn in which the boundary of the color of the step dye is clarified can be obtained by the method for producing the step dyed yarn according to the present invention. FIG. 4 shows an embodiment of a step dyed yarn obtained by the method for producing a step dyed yarn according to the present invention. The step dyed yarn 60 according to an embodiment is step dyed after applying a depressant (or at the same time as applying the depressant) between regions where the filament yarns are colored differently. It is what.

  The step dyeing yarn 60 according to one embodiment is adjacent to each other at the time of step dyeing by a dyeing agent or by pressure (pressing force, blowing) applied to a portion of the filament yarn to which the dyeing agent is attached in the dyeing process. As a result, the boundary between the colors X, Y, and Z of the step dyeing is clarified. As described above, the step dyed color boundary is clarified, so that the step dyed yarn 60 according to the embodiment has a good appearance and an excellent design.

  Since the step dyed yarn 60 obtained by the manufacturing method according to the present invention is excellent in design, it is suitable for, for example, a stitch 72 for sewing a seam of a seat of a vehicle seat 70 as shown in FIG. Can be used. In addition to the vehicle seat 70, the present invention can be applied to vehicle interiors in general. Specifically, for example, it can be suitably used for sewing various vehicle interior materials such as door trims, instrument panels (vehicle front panels), carpets, ceilings, and consoles.

  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.

  For example, in the above embodiment, the upper mold 20 used in the dyeing process and the upper mold 50 used in the dyeing process are not shared like the lower mold 30. Although the dyeing treatment is performed before the step dyeing, for example, the filament yarn 10 is restrained by using the gas flow passage 56 of the dye partition wall 54 for blowing the upper mold 50 shown in FIG. If the dyeing agent 44 is supplied, it is possible to simultaneously perform the suppression treatment and the dyeing using the upper mold 50 of the dyeing process. In this case, the shape of the gas flow passage 56 of the dye partition wall 54 may be appropriately improved so that the depressant 44 is applied to the target position. And if an upper mold | type can be shared by the dyeing process and the dyeing | staining process in this way, it can prevent the boundary of a step dyeing more reliably. Needless to say, the dyeing treatment and the dyeing may be performed simultaneously by other methods.

  In the above embodiment, in the dyeing process, pressure (pressing force) is applied to the portion of the filament yarn 10 to which the dyeing agent is attached by the dye partition wall 54, and the gas flow passage 56 or the dyeing agent discharge passage. The filament yarn 10 is step dyed in a state in which pressure is applied to the portion of the filament yarn 10 to which the dyeing agent is attached by blowing air from 40. For example, the effect of suppressing penetration by the dyeing agent 44 is great. Depending on the degree of color mixing desired, either or both of pressing and blowing by the dye partition wall 54 may be prevented. Moreover, although it is performed from both the upper mold | type 50 and the lower mold | type 30 regarding ventilation, it can also be set as the ventilation from either one.

  Furthermore, in the above-described embodiment, the anti-staining treatment step and the dyeing step are performed using a predetermined upper mold and lower mold, but if the depressant or dye can be applied to the target position, It is also possible to carry out the dyeing treatment process and the dyeing process using a mold other than the mold shown in the embodiment, and if it is possible to apply the dyeing dye or dye to the target position by other methods such as spraying, It is also possible to carry out the dyeing process and the dyeing process without using a mold.

DESCRIPTION OF SYMBOLS 10 Filament yarn 12 Area | region to which the color of a filament yarn is attached 14 Area | region to which the dye inhibitor of a filament yarn is attached 20 Upper mold 22 of the dyeing treatment process Depressant passage 24 Die body part 34 Lower mold discharge part 36 Dye discharge hole 38 Dye discharge hole 40 Dye discharge path 42 Dye discharge path 44 Dye discharge agent 50 Upper mold 52 of dyeing process Dye flow path 54 Dye partition 56 Gas flow path 58 Screw 60 Step dyed yarn 70 Vehicle seat 72 Stitch

Claims (4)

A dyeing step for performing step dyeing of the filament yarn, and before the step dyeing of the filament yarn, or when performing step dyeing of the filament yarn, A dyeing treatment step for controlling the degree of mixing of adjacent colors at the time of step dyeing, with a dyeing agent that suppresses penetration of the dye applied to the other region into the other region, and
The decontamination treatment step is performed using an upper mold having a depressant flow path and a lower mold having a depressant discharge hole,
The dyeing step is carried out using an upper die having a dye flow passage and a lower die having a dye discharge hole.   2. The step dyeing according to claim 1, wherein the lower mold used in the dyeing treatment process further includes a dye discharge hole, and the dyeing process is performed using the lower mold as a lower mold of the dyeing process. Yarn manufacturing method.   The method for producing a step dyed yarn according to claim 1 or 2, wherein step dyeing of the filament yarn is performed in a state where pressure is applied to a portion of the filament yarn to which the dye inhibitor is applied. The dyeing treatment step is carried out by fixing the filament yarn between an upper mold having the dye flow passage and a lower mold having a dye discharge hole,
The dyeing step is performed by fixing the filament yarn between an upper die having the dye flow passage and a lower die having the dye discharge hole. 4. The method for producing a step dyed yarn according to any one of 3 above.

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