JP2012067422A - Three-dimensional warp-knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional warp-knitted fabric in which the arrangement interval of stitches at which connection yarns are connected in the course direction is changed so that the hardness in the course direction can be changed.SOLUTION: A three-dimensional warp-knitted fabric comprises a front side fabric, a back side fabric and connecting yarns to connect them, and the interval of stitches at which connection yarns are connected supplied from at least one reed is not the same but changed in the course direction. The interval of the stitches at which connection yarns are connected in the course direction is 1-5 stitches. Preferably, the material and fineness in connection yarn supplied from at least one of two or more reeds is different from those of another. More preferably, the number of the reeds to be used in supplying connection yarns is 2-4.

Description

  The present invention relates to a three-dimensional structure warp knitted fabric. More specifically, the present invention is a three-dimensional warp knitted fabric in which the front knitted fabric and the back knitted fabric are connected by a connecting yarn, and the arrangement interval of stitches to which the connecting yarn is connected in the course direction is changed. The present invention relates to a three-dimensional warp knitted fabric having portions with different hardness in the course direction.

  Conventionally, a three-dimensional knitted fabric in which a front knitted fabric and a back knitted fabric are connected by a connecting yarn is used as a skin material such as a cushion material. As such a three-dimensional structure knitted fabric, a cushion material for mattress whose hardness is changed depending on a use site is known (for example, see Patent Document 1). Further, a three-dimensional warp knitted fabric is known in which the front and back ground structures are connected with connecting yarns and knitted so as to have different hardness at a predetermined width ratio in the width direction, and has physical properties such as specific fabric elongation ( For example, see Patent Document 2.) Further, a three-dimensional knitted fabric having a knitted structure in which the structures of at least one outer part of the upper and lower surfaces are the same as each other and integrally have different bending resistances is known (for example, patents). Reference 3).

JP 2003-339480 A JP 2006-283250 A JP 2002-20954 A

  As described above, various three-dimensional knitted fabrics are known. In the three-dimensional structured knitted fabric described in Patent Document 1, each connecting yarn connected to each stitch of the front knitted fabric and the back knitted fabric. The arrangement interval is the same, and the hardness is changed by forming a structure having stitches to which the connecting yarns are connected and stitches that are not connected, and only two types of hardness can be set. Further, in the three-dimensional structure warp knitted fabric described in Patent Document 2, the hardness in the width direction is adjusted by the number of connecting yarns, but since the change in hardness is only in the width direction, a suitable knitting may be used depending on the application. It may not be the ground. Furthermore, in the three-dimensional structure knitted fabric described in Patent Document 3, the hardness is adjusted by the fineness of the connecting yarn. However, as in Patent Document 2, the change in hardness is only in the width direction. May not be a suitable knitted fabric.

  The present invention has been made in view of the above-described conventional situation, and is a three-dimensional warp knitted fabric in which a front knitted fabric and a back knitted fabric are connected by a connecting yarn, and the connecting yarn is connected in the course direction. It is an object of the present invention to provide a three-dimensional warp knitted fabric having portions with different hardness in the course direction by changing the arrangement interval of the stitches.

The present invention is as follows.
1. A three-dimensional warp knitted fabric comprising a front side knitted fabric, a back side knitted fabric, and a connecting yarn connecting the front side knitted fabric and the back side knitted fabric,
A three-dimensional warp knitted fabric characterized in that an arrangement interval of stitches to which connecting yarns supplied from at least one ridge are connected is not the same in the course direction.
2. The one stitch to which the connecting yarn is connected and the other stitch to which the connecting yarn is connected next to the one stitch are in an arrangement relationship of five adjacent from the adjacent relationship in the course direction. 1 above. The three-dimensional warp knitted fabric described in 1.
3. At least one of the material and the fineness of each of the connecting yarns supplied from two or more ridges is different. Or 2. The three-dimensional warp knitted fabric described in 1.
4). 2 to 4 pieces of wrinkles used for supplying the connecting yarn. To 3. The three-dimensional structure warp knitted fabric according to any one of the above.

According to the three-dimensional structure warp knitted fabric of the present invention, two or more different parts of hardness can be set in the course direction, for example, as a skin material for a vehicle seat so that the course direction becomes the length direction. When used, the seat can have a comfortable seat having at least three types of portions having different compression moduli in the length direction.
In addition, when one stitch to which the connecting yarn is connected and the other stitch to which the connecting yarn is connected next to the one stitch are in an adjacent relationship in the course direction from five to the next. The knitting of a three-dimensional warp knitted fabric having portions with different hardness in the course direction is easy.
Further, when at least one of the material and the fineness of each of the connecting yarns supplied from two or more wrinkles is different, the portions having different hardnesses can be set more widely.
In addition, when 2 to 4 ridges are used for supplying the connecting yarn, a three-dimensional warp knitted fabric having different hardness in the course direction can be easily knitted. Furthermore, by supplying different types of connecting yarns from each hook, it is possible to set a wider range of parts with different hardness, and when used as a vehicle skin material, a wide range of parts with different compression elastic modulus Therefore, the seat can be more comfortable to sit on.
Since the three-dimensional warp knitted fabric has a greater elongation in the wale direction than the course direction, the three-dimensional warp knitted fabric of the present invention was used as a skin material for a vehicle seat so that the course direction was the length direction. In this case, it is possible to obtain a sheet that does not easily generate wrinkles and has a good tailoring. On the other hand, it is also conceivable to use a three-dimensional knitted fabric in which two or more kinds of hardness different parts are set in the wale direction so that the wale direction becomes the length direction, but the elongation in the width direction of the sheet is reduced. For this reason, the sheet is liable to generate wrinkles, which is not preferable.

It is a typical perspective view of the three-dimensional structure warp knitted fabric which has a site | part from which hardness differs in a course direction. It is a schematic diagram for demonstrating that it becomes a three-dimensional structure warp knitted fabric which has a site | part from which hardness differs in a course direction by changing in the course direction the arrangement | positioning space | interval of the stitch | stitch which connects one connection thread | yarn. It is a schematic diagram for demonstrating the site | part with high hardness in which the connection thread | yarn supplied from two ridges was connected with all the stitches of the front side knitted fabric and the back side knitted fabric. One of the connecting yarns supplied from the two reeds is connected to all the stitches of the front side knitted fabric and the back side knitted fabric, and the other is a stitch that has two adjacent arrangements in the front side knitted fabric and the back side knitted fabric. It is a schematic diagram for demonstrating the site | part of the moderate hardness connected. It is a schematic diagram for demonstrating the site | part with a low hardness connected to the stitches which the connection thread supplied from two ridges becomes a 2nd adjacent arrangement | positioning relationship in a front side knitted fabric and a back side knitted fabric. It is the schematic diagram which looked at an example of the vehicle seat provided with the skin material by which the three-dimensional structure warp knitted fabric with which hardness differs in a course direction is arrange | positioned so that a course direction may become a length direction. It is the schematic diagram which looked at the other example of the vehicle seat provided with the skin material by which the three-dimensional structure warp knitted fabric from which hardness differs in a course direction is arrange | positioned so that a course direction may become a length direction from the diagonal direction. The connected yarns supplied from the two reeds are connected to all the stitches of the front knitted fabric and the back knitted fabric. The density of the connected yarns where the two connected yarns are adjacent to each other. In the “dense” part), which is slightly lower in hardness [the arrangement interval of one connecting thread changes from the next to the next two, and the overall connection density is lower than the “dense” part. FIG. 3 is a schematic diagram for explaining a three-dimensional warp knitted fabric in which a “rough” portion (a structure of “dense 1 coarse 1”)] is continuously formed. FIG. 9 is a schematic diagram for explaining a three-dimensional warp knitted fabric in which the structure of the “rough” portion is “dense 1 rough 2” and the hardness of the “rough” portion is lower than that in FIG. 8. FIG. 10 is a schematic diagram for explaining a three-dimensional warp knitted fabric in which the structure of the “rough” portion is “dense 1 rough 3” and the hardness of the “rough” portion is lower than that in FIG. 9. FIG. 11 is a schematic diagram for explaining a three-dimensional structure warp knitted fabric in which the structure of the “rough” portion is “dense 1 rough 4” and the hardness of the “rough” portion is lower than that in FIG. 10. FIG. 10 is a schematic diagram for explaining a three-dimensional warp knitted fabric in which the structure of the “rough” part is “dense 2 rough 1” and the hardness of the “rough” part is slightly higher than that in FIG. 9. FIG. 13 is a schematic diagram for explaining a three-dimensional structure warp knitted fabric in which the structure of the “rough” portion is “dense 3 rough 1” and the hardness of the “rough” portion is higher than that in FIG. 12. It is a schematic diagram for explaining a three-dimensional structure warp knitted fabric in which the structure of the “rough” portion becomes “dense 1 rough 1 dense 2 rough 1” and the hardness of the “rough” portion can be finely adjusted. The structure of the “rough” part becomes “dense 3 rough 1 dense 2 rough 1”, the hardness of the “rough” part can be finely adjusted, and the hardness of the “rough” part is as shown in FIG. It is a schematic diagram for demonstrating the three-dimensional structure warp knitted fabric which becomes a little high compared. The structure of the “rough” part becomes “dense 3 rough 1 dense 4 rough 1”, the hardness of the “rough” part can be finely adjusted, and the hardness of the “rough” part is as shown in FIG. It is a schematic diagram for demonstrating the three-dimensional structure warp knitted fabric which becomes a little high compared.

Hereinafter, the present invention will be described in detail with reference to FIGS.
The items shown here are for illustrative purposes and exemplary embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.

A three-dimensional warp knitted fabric according to an embodiment of the present invention includes a front side knitted fabric, a back side knitted fabric, and a connecting yarn, to which a connecting yarn supplied from at least one kite (yarn supplying device) is connected. The arrangement intervals of the stitches are not the same in the course direction but change.
In this three-dimensional structure warp knitted fabric, at least one connecting yarn is connected to all the stitches, and the other connecting yarn is changed from the adjacent relationship to the two to five adjacent relationship. Thus, it is possible to form portions having different hardness in the course direction.

  The “three-dimensional structure warp knitted fabric” (hereinafter sometimes referred to as “warp knitted fabric”) is a knitted fabric having a warp knitted structure. A knitted fabric having a warp knitted structure is a knitted fabric obtained by forming a loop with yarns supplied in the course direction and sequentially connecting them in the wale direction, and can be knitted by a knitting machine such as a double raschel knitting machine. it can.

  The fiber constituting the yarn used for forming the “front knitted fabric” and the “back knitted fabric” may be any of synthetic fiber, regenerated fiber, natural fiber, and the like. The yarn may be a yarn composed of only one type of fiber, or may be a yarn formed by mixing a plurality of fibers. Further, it may be a thread that is not colored with the color tone of the fiber, or may be a thread colored with a predetermined color tone. Moreover, the front side knitted fabric and the back side knitted fabric may be formed of the same type of yarn, or may be formed of different types of yarn.

  More specifically, the fibers include polyester fibers such as polyethylene terephthalate fibers, polybutylene terephthalate fibers and polytrimethylene terephthalate fibers, polyamide fibers such as nylon 6 fibers and nylon 66 fibers, polyacrylic fibers and polyethylene fibers. And synthetic fibers such as polyolefin fibers such as polypropylene fibers, natural fibers such as cotton, hemp, silk and wool, and regenerated fibers such as cupra rayon, viscose rayon and lyocell. Among these, synthetic fibers are preferable, and polyester fibers having high strength and excellent durability are more preferable.

  The form of the yarn is not particularly limited, either a filament yarn or a spun yarn. Furthermore, bulky processed yarns such as twisted yarns, false twisted yarns, and fluid injection processed yarns may be used. In the case of a filament yarn, it may be a multifilament or a monofilament, but the yarn constituting the front knitted fabric and the back knitted fabric is preferably a multifilament.

  Although the fineness of the yarn constituting the front side knitted fabric is not particularly limited, it is preferably 100 to 1500 dtex, particularly 150 to 1200 dtex. If the fineness is 100 to 1500 dtex, the warp knitted fabric can be easily knitted, and a vehicle seat having excellent sitting comfort can be obtained. Further, the yarn density of the front side knitted fabric is not particularly limited, but the yarn density in the course direction is 5 to 40 yarns / inch, particularly 8 to 30 yarns / inch, and the yarn density in the wale direction is 5 to 40 yarns / inch. It is preferably 8 to 30 / inch. With such a yarn density, a vehicle seat having excellent sitting comfort and the like can be obtained.

  Although the fineness of the yarn constituting the back side knitted fabric is not particularly limited, it is preferably 100 to 1500 dtex, particularly 150 to 1200 dtex. If the fineness is 100 to 1500 decitex, a three-dimensional warp knitted fabric can be easily knitted, and a vehicle seat having excellent sitting comfort can be obtained. Further, the yarn density of the back side knitted fabric is not particularly limited, but the yarn density in the course direction is 5 to 40 yarns / inch, particularly 8 to 30 yarns / inch, and the yarn density in the wale direction is 5 to 40 yarns / inch, particularly It is preferably 8 to 30 / inch. With such a yarn density, a vehicle seat having excellent sitting comfort and the like can be obtained.

  As the “connection yarn” for connecting the front side knitted fabric and the back side knitted fabric, a filament yarn is usually used. The type of fiber constituting the filament yarn is not particularly limited, and it is preferable to select and use it appropriately depending on the use of the warp knitted fabric. The fibers include polyester fibers such as polyethylene terephthalate fibers, polybutylene terephthalate fibers and polytrimethylene terephthalate fibers, polyamide fibers such as nylon 6 fibers and nylon 66 fibers, and polyolefin fibers such as polyacrylic fibers and polypropylene fibers. Synthetic fibers such as cotton, hemp, silk, wool, and other natural fibers, and regenerated fibers such as cupra rayon, viscose rayon, and lyocell. Of these, synthetic fibers are preferable, polyester fibers having high strength and excellent durability, and more preferably polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate fibers.

  The filament yarn used as the connecting yarn may be a monofilament or a multifilament, but a monofilament is preferable. When the connecting yarn is a multifilament, the connecting yarn is preferably a false twisted yarn or the like. If it is false twisted yarn etc., it can be set as the vehicle seat etc. which has the more excellent seating comfort. Further, when the connecting yarns are monofilaments, all the connecting yarns may be monofilaments, and other yarns other than the monofilaments may be knitted as necessary during knitting. For example, a multifilament false twisted yarn or the like can be knitted into a monofilament.

  The fineness of the connecting yarn is not particularly limited, but is preferably 100 to 1500 dtex, particularly 150 to 1200 dtex. When the fineness is 100 to 1500 dtex, it is easy to produce a warp knitted fabric, and it is possible to obtain a vehicle seat having sufficient cushioning properties and the like and having a comfortable seat. The yarn density of the connecting yarn is not particularly limited, but is preferably 5 to 40 / inch, particularly 8 to 30 / inch, and more preferably 10 to 25 / inch. When the yarn density is 5 to 40 yarns / inch, particularly 10 to 25 yarns / inch, a vehicle seat having excellent sitting comfort can be obtained.

In the three-dimensional structure warp knitted fabric of the present invention, by changing the arrangement interval of stitches to which the connecting yarn supplied from at least one ridge is connected in the course direction, a portion having different hardness in the course direction is formed. Can do. The arrangement interval in the course direction of the stitches to which the connecting yarns are connected is not particularly limited, but it can be set to an adjacent relationship of five from the adjacent relationship. The wider the interval, the lower the hardness and the narrower the interval. Hardness increases. Here, the five adjacent arrangement relations are the arrangement relations between the four, that is, the fifth stitch counting from one stitch to which the connecting yarns are connected, and then the connecting yarn is connected. It means a stitch (similarly, the arrangement relationship of 2 to 4 adjacent is an arrangement relationship with 1 to 3 between them). Further, when two or more connecting yarns are supplied from two or more rivets, a portion where the stitches to which the plurality of connecting yarns supplied from the plurality of heels are connected is supplied from one heel. The stitches to which only one connecting yarn is connected and the stitches to which a plurality of connecting yarns supplied from a plurality of reeds are connected are arranged at a predetermined interval (positioning relationship from one to five next). The hardness in the course direction can also be changed by forming the formed portion.
Note that the “number” of connecting yarns is one connecting yarn supplied from one kite, and even when a plurality of connecting yarns are supplied simultaneously from one kite, those connecting yarns are Assume that there is one.

  As described above, the hardness in the course direction of the warp knitted fabric can be adjusted by the arrangement interval of stitches to which the connecting yarns supplied from at least one reed are connected, but supplied from two or more reeds. Can be changed more complexly depending on the material and fineness of the connecting yarn (see the above description for the material and fineness of the connecting yarn), and it is possible to set the parts with different hardness more easily and widely. it can. The number of wrinkles is not particularly limited, but can be 2 to 4, particularly 2 to 3, and even 2 and by using two wrinkles, the hardness in the course direction of the warp knitted fabric is practical. It can be changed sufficiently from the viewpoint.

  An example of a warp knitted fabric having different hardness in the course direction is a warp knitted fabric as shown in FIG. The warp knitted fabric of FIG. 1 includes, for example, a portion where the arrangement interval of the stitches to which the connecting yarn is connected is narrow (a portion represented by reference numeral 10a), and a portion where the interval of the stitches to which the connecting yarn is connected is medium ( A portion represented by reference numeral 10b), and a portion (part represented by reference numeral 10c) having a wide interval between stitches to which the connecting yarns are connected. In this way, by changing the portion in which the arrangement interval of the stitches to which the connecting yarns are connected is different in the course direction, in this warp knitted fabric, the level of hardness is represented by the portion represented by reference numeral 10a> reference numeral 10b. Part> the part represented by reference numeral 10c.

  The change in hardness in the course direction as shown in FIG. 1 can be basically explained by a schematic diagram of the structure of the connecting yarn as shown in FIG. In the warp knitted fabric of FIG. 2, the stitches of the front side knitted fabric 1 and the back side knitted fabric 3 are knitted by being connected by the connecting yarn 2, and the arrangement interval of the stitches to which the connecting yarn is connected is narrow (adjacent Arrangement relationship) The structure (part represented by symbol a) is a part having high hardness. On the other hand, a structure with a wide arrangement interval (two or three adjacent arrangement relations) (part represented by symbol b) becomes a part with low hardness, and a warp knitted fabric having parts with different hardness in the course direction is knitted. .

3-5 is a figure for demonstrating the basic structure | tissue for changing the space | interval with which a connection thread | yarn is connected in a course direction in a warp knitted fabric. FIG. 3 corresponds to a portion represented by reference numeral 10a in FIG. 1, and the connecting yarns 2a and 2b supplied from two ridges are connected to all the stitches of the front knitted fabric and the back knitted fabric, and the connecting yarn is The arrangement | positioning space | interval of the stitches to be connected is narrow (adjacent stitches), and a portion having high hardness is knitted. 4 corresponds to the portion represented by reference numeral 10b in FIG. 1, and the connecting yarn 2a out of the connecting yarns 2a and 2b supplied from the two reeds is respectively a front knitted fabric and a back knitted fabric. Connected to all the stitches, the connecting yarn 2b is connected to every other stitch in the front-side knitted fabric and the back-side knitted fabric (arrangement relationship next to each other), and a portion represented by reference numeral 10a and a reference numeral 10c Parts having hardness between the represented parts are knitted. Further, FIG. 5 corresponds to the portion represented by reference numeral 10c in FIG. 1, and the connecting yarns 2a and 2b supplied from the two ridges are placed every other stitch on the front knitted fabric and the back knitted fabric. Connected, the part of the stitches where the connecting yarns are connected is wide, and the parts with low hardness are knitted.
The stitch 1a in FIGS. 3 to 5 is a stitch in which the connecting yarns 2a and 2b are connected together among the stitches of the front side knitted fabric, and the stitch 1b is a stitch in which one is not connected. The stitch 3a is a stitch in which the connecting yarns 2a and 2b are connected together, and the stitch 3b is a stitch in which one is not connected.

  FIG. 6 shows an example in which the three-dimensional structure warp knitted fabric of the present invention shown in FIG. 1 is used as a skin material for a vehicle seat. In the vehicle seat shown in FIG. 6, the warp knitted fabric (skin material) shown in FIG. 1 is disposed so that the course direction thereof is the length direction of the seat, and based on the load applied in the length direction, and the like. The parts with different hardness are arranged in place. By arranging in this way, it is possible to provide a vehicle seat that is less prone to wrinkles and is comfortable to sit on.

  Further, FIG. 7 shows another example of a vehicle seat in which the hardness in the length direction is changed more complicatedly by using a warp knitted fabric in which the structure of the connecting yarn in the course direction is changed more complicatedly as the skin material. It is an example. In the warp knitted fabric used for the vehicle seat shown in FIG. 7, a connection having a narrow connection interval (adjacent arrangement relationship) in which a connection yarn having a high fineness and a connection yarn having a low fineness are continuously connected to each stitch is connected. A portion composed of a tissue (a portion represented by reference numeral 20a), a connecting yarn having a high fineness is connected continuously to each stitch, and a connecting yarn having a small fineness is connected at intervals (2). 2 to 5 adjacent arrangements) A part composed of a connected structure (part indicated by reference numeral 20b), a connecting yarn having a small fineness is connected continuously to each stitch, and a connecting yarn having a high fineness is spaced apart A portion composed of a connected tissue having a wide connecting interval (a portion represented by reference numeral 20c) and a connecting yarn having a large fineness and a connecting yarn having a small fineness connected at intervals. Table with 20d The site), with a.

  As described above, the warp knitted fabric of FIG. 7 differs from the warp knitted fabric of FIG. 1 not only in the arrangement interval of the connecting yarns connected to the respective stitches but also in the fineness of the connecting yarns. Therefore, in this warp knitted fabric, the hardness is a part represented by reference numeral 20a> a part represented by reference numeral 20d, and each part represented by reference numeral 20b and reference numeral 20c is a part represented by reference numeral 20a. Although it becomes the hardness between the site | parts represented by the code | symbol 20d, the site | part represented by the code | symbol 20b and the site | part represented by the code | symbol 20c are the fineness of a connection thread | yarn, and the connection thread | yarn connected with each stitch. The level of hardness is determined by the arrangement interval. Also in the vehicle seat of FIG. 7, the course direction of the warp knitted fabric is arranged so as to be the length direction of the seat, and parts having different hardnesses are arranged at appropriate positions based on the load applied in the length direction. Has been. By arranging in this way, it is possible to provide a vehicle seat that is less prone to wrinkles and is comfortable to sit on.

  8 to 16 show a wide variety of intervals between stitches in a plurality of connecting yarns (two connecting yarns in the figure) among the stitches in the course direction in the three-dimensional structure warp knitted fabric of the present invention. It is a figure for demonstrating that it can be performed. In these drawings, the connecting yarns 2a and 2b supplied from two ridges are connected to all the stitches of the front side knitted fabric and the back side knitted fabric, that is, the connecting interval is narrow (adjacent arrangement relationship) and the hardness. [Dense in FIGS. 8 to 16 (this “dense” means that two connecting yarns are connected to all the stitches of the front knitted fabric and the back knitted fabric) Next to the “dense” portion, the number of stitches to which the connecting yarn is connected is different and the connecting interval is wide (the arrangement relationship between two to five). ) And a warp knitted fabric knitted with a portion where the hardness changes (the hardness decreases as a whole) is illustrated.

  In FIG. 8, subsequent to the “dense” part, a relatively coarse part (a part with many parts having a wide connection interval) is knitted by setting the structure of the connection yarn to “dense 1 coarse 1”. . Here, “dense 1 coarse 1” means that a unit composed of one stitch connected with two connecting yarns and one stitch connected with one connecting yarn following the stitch is repeated ( Hereinafter, dense, coarse, and numbers attached thereto have the same meaning.) Further, as a relatively rough portion following the “dense” portion, in FIG. 9, the structure of the connecting yarn is “dense 1 rough 2”, and in FIG. 10, the structure of the connecting yarn is “dense 1 rough 3”. In FIG. 11, the knitted fabric is knitted by making the texture of the connecting yarn “dense 1 coarse 4”. In these warp knitted fabrics, the relatively coarse portion following the “dense” portion has a coarser connecting yarn structure from the warp knitted fabric of FIG. 8 to the warp knitted fabric of FIG. Lower.

  Further, as a relatively rough portion following the “dense” portion, in FIG. 12, the structure of the connecting yarn is “dense 2 rough 1”, and in FIG. 13, the structure of the connecting yarn is “dense 3 rough 1”. It is organized by being. In these warp knitted fabrics, the relatively coarse portion following the “dense” portion has a slightly dense structure of the connecting yarn from the warp knitted fabric of FIG. 12 to the warp knitted fabric of FIG. Get higher. In addition, the warp knitted fabrics of FIGS. 12 and 13 have more “dense” stitches than the warp knitted fabrics of FIGS.

In FIGS. 14 to 16, the relatively rough portion following the “dense” portion has a structure in which the connecting yarn is more complicated. That is, in FIG. 14, the structure of the connecting yarn is “dense 1 coarse 1 dense 2 coarse 1”, in FIG. 15, the structure of the connecting yarn is “dense 3 coarse 1 dense 2 coarse 1”, and in FIG. It is knitted by making the structure of the connecting yarn “dense 3 coarse 1 dense 4 coarse 1”. In these warp knitted fabrics, the relatively coarse portion following the “dense” portion has a slightly dense structure of the connecting yarn from the warp knitted fabric of FIG. 14 to the warp knitted fabric of FIG. Get higher. Furthermore, the warp knitted fabrics of FIGS. 14 to 16 have more “dense” stitches than the warp knitted fabrics of FIGS. 8 to 11 and the warp knitted fabric has a slightly higher overall hardness.
The stitches 1a in FIGS. 8 to 16 are stitches in which the connecting yarns 2a and 2b are connected together, and the stitches 1b are stitches in which one is not connected. The stitch 3a is a stitch in which the connecting yarns 2a and 2b are connected together, and the stitch 3b is a stitch in which one is not connected.

Hereinafter, the present invention will be specifically described by way of examples.
Example 1
It consists of 288 single fibers from the knitting (L1, L2) for forming the front side knitted fabric, using a double raschel knitting machine (made by KARL MAYER) with 9 gauge / inch equipped with 6 rivets and 23 mm between the hooks. A multifilament [polyethylene terephthalate (PET) fiber false twisted yarn] with a fineness of 1000 dtex is supplied in a 1-in-1-out arrangement, and a fineness consisting of 144 single fibers from the knitting (L5, L6) for forming the back side knitted fabric Supply 500 dtex multifilament (PET fiber false twisted yarn) and all-in arrangement of PET monofilament with fineness of 880 dtex from the connecting structure forming ridges (L3, L4). / Inch, and by using the following knitting structure, the parts of the connecting yarn supplied from the L3 and L4 ridges are dense and rough parts. And by, knitted and part of high hardness in the course direction, the three-dimensional structure warp knitted fabric and lower portions hardness is formed.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1010/1212 /
L4; 1212/1010 /
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric part having such a structure corresponds to, for example, a part having high hardness (part represented by reference numeral 10a) in FIG.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1010/1212 /
L4; 1212/1111/1010/1111 /
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric portion having such a structure corresponds to, for example, a portion (a portion represented by 10b) having an intermediate hardness in FIG.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1111/1010/1111/1212 /
L4; 1212/1111/1010/1111
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric portion having such a structure corresponds to, for example, a low hardness portion (a portion represented by reference numeral 10c) in FIG.

Example 2
Using a 14 gauge / inch, 6 mm double raschel knitting machine (made by KARL MAYER) equipped with 6 ridges, it consists of 96 single fibers from heels (L1, L2) for forming the front side knitted fabric A multifilament (PET fiber false twisted yarn) with a fineness of 334 dtex is supplied in a 1-in-1 out arrangement, and a multi-filament with a fineness of 167 dtex consisting of 48 single fibers from the back side knitted fabric forming ridges (L5, L6) Filaments (PET fiber false twisted yarns), and PET monofilaments with fineness of 390 dtex from the hooks (L3, L4) for forming the connection structure are all supplied in an all-in arrangement and driven at 13 courses / inch. By making the same knitting structure as in Example 1, the structure of the connecting yarn supplied from the heels of L3 and L4 is in the course direction due to the dense part and the rough part. A high degree sites to organize conformation warp knitted fabric low and sites are formed hardness.

Example 3
Using a 9 gauge / inch, 6 mm double raschel knitting machine (knitting machine used in Example 1) equipped with 6 rivets, 288 pieces from the knitting (L1, L2) for forming the front knitted fabric A multifilament (PET fiber false twisted yarn) with a fineness of 1000 dtex consisting of a single fiber is supplied in a 1-in-1 out arrangement, and a fineness consisting of 144 single fibers from the knitted fabric (L5, L6) for forming the back side knitted fabric 500 decitex multifilament (PET fiber false twisted yarn), connecting structure forming wrinkle (L3) to fineness 880 dtex PET monofilament, and connecting structure forming wrinkle (L4) to fineness 390 dtex PET By supplying monofilaments in an all-in arrangement and setting the following knitting structure with 13 courses / inch driving, the L3 and L4 And et supplied tissue dense parts of the connecting yarn, by the rough parts, knitted and part of high hardness in the course direction, the three-dimensional structure warp knitted fabric and lower portions hardness is formed.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1010/1212 /
L4; 1212/1010 /
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric portion having such a structure corresponds to, for example, a portion having high hardness (a portion represented by reference numeral 20a) in FIG.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1010/1212 /
L4; 1212/1111/1010/1111 /
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric part having such a structure is, for example, in a part having a hardness between a part represented by reference numeral 20a and a part represented by reference numeral 20d (part represented by reference numeral 20b) in FIG. Equivalent to.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1212/1111/1010/1111 /
L4; 1010/1212 /
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric portion having such a structure is also, for example, a part having a hardness between the part represented by reference numeral 20a and the part represented by reference numeral 20d (part represented by reference numeral 20c) in FIG. Equivalent to.

L1; 2322/2122/2322/2122/2322/21111 /
1011/1211/1011/1211/1011/2111 /
L2; 1011/1211/1011/1211/1011/1222 /
2322/2122/2322/2122/2322/21111 /
L3; 1111/1010/1111/1212 /
L4; 1212/1111/1010/1111
L5; 1112/1110 /
L6; 1110/2223 /
The knitted fabric portion having such a structure corresponds to, for example, a low hardness portion (a portion represented by reference numeral 20d) in FIG.

  It should be noted that the above description is for illustrative purposes only and is not to be construed as limiting the invention. Although the invention has been described with reference to exemplary embodiments, it is to be understood that the language used in the description and illustration of the invention is illustrative and exemplary rather than restrictive. As detailed herein, changes may be made in its form within the scope of the appended claims without departing from the scope or spirit of the invention. Although specific structures, materials and embodiments have been referred to in the detailed description of the invention herein, it is not intended that the invention be limited to the disclosure herein, but rather the invention will be claimed. It covers all functionally equivalent structures, methods and uses within the scope.

  The present invention can be used in the technical field of three-dimensional warp knitted fabrics used for various applications. Examples of uses of this three-dimensional warp knitted fabric include skin materials for various chairs having at least a seating surface such as a vehicle seat, an office chair, an armchair, an easy chair, a couch, a pipe chair, and a stall. The three-dimensional structure warp knitted fabric of the present invention is particularly useful in applications such as vehicle seats for passenger cars.

  DESCRIPTION OF SYMBOLS 100; Three-dimensional structure warp knitted fabric, 1; Front side knitted fabric, 2; Connection yarn, 3; Back side knitted fabric, 1a; Stitches not connected to each other, 2a, 2b; connecting yarns, 3a; stitches on the back side knitted fabric where connecting yarns 2a, 2b are connected together, 3b; stitches where one is not connected, 200; Sheets, 10a to 10c, 20a to 20d; sites where the structure of the connecting yarn in the course direction is different and the hardness is different.

Claims (4)

Front side knitted fabric,
The back side knitted fabric,
A three-dimensional warp knitted fabric comprising a connecting yarn connecting the front side knitted fabric and the back side knitted fabric,
A three-dimensional warp knitted fabric characterized in that an arrangement interval of stitches to which connecting yarns supplied from at least one ridge are connected is not the same in the course direction.   The one stitch to which the connecting yarn is connected and the other stitch to which the connecting yarn is connected next to the one stitch are in an arrangement relationship of five adjacent from the adjacent relationship in the course direction. The three-dimensional structure warp knitted fabric according to claim 1.   The three-dimensional structure warp knitted fabric according to claim 1 or 2, wherein at least one of a material and a fineness of each of the connecting yarns supplied from two or more wrinkles is different.   The three-dimensional structure warp knitted fabric according to any one of claims 1 to 3, wherein there are 2 to 4 wrinkles used for supplying the connecting yarn.

Images