JP2019085667A - Three-dimensional warp knitted fabric - Google Patents

Abstract

To provide a three-dimensional warp knitted fabric capable of keeping substantially fixed thickness without being crushed even in the case of mold-processing into a three-dimensional form such as bowl shape.SOLUTION: A three-dimensional warp knitted fabric 10 comprises a front side base cloth 12 and a back side base cloth 14 arranged separately from each other, and a connection yarn 16 for connecting the front side base cloth 12 and the back side base cloth 14 by going back and forth therebetween. The front side base cloth 12 is formed of a mesh texture knitted by a covering yarn and the back side base cloth 14 is formed of a plain texture. In the three-dimensional warp knitted fabric 10, elongation of the front side base cloth 12 in a course direction is smaller than elongation of the back side base cloth 14 in the course direction and elongation of the front side base cloth 12 in a wale direction is substantially equal to elongation of the back side base cloth 14 in the wale direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a three-dimensional warp knitted fabric having excellent breathability and stretchability, and in particular, when it is used by being molded into a three-dimensional shape such as a bra cup material and a shoulder pad material, the three-dimensional structure warp is excellent in shape stability. Concerning the knitted fabric.

  BACKGROUND ART Conventionally, a three-dimensional warp knitted fabric excellent in stretchability and air permeability has been used as a shape-retaining material such as a bra cup material and a shoulder pad material. For example, Patent Document 1 discloses a three-dimensional warp knitted fabric that is breathable, has a soft texture, and has excellent shape retention.

The three-dimensional warp knitted fabric as a whole, in other words, has uniform fabric elongation, air permeability, and fabric hardness on the front side and the back side. Specifically, the fabric elongation is 20 to 50%, the air permeability is 150 cc / cm ² · s or more, and the fabric hardness is 40 to 70 mm on the front and back sides of the three-dimensional structure warp knitted fabric.

JP 2005-200796 A

  When three-dimensional molding a three-dimensional warp knitted fabric, molding is used. However, a shape-retaining material having a bowl-shaped shape, such as a bra cup material and a shoulder-pad material, differs in the degree of curve between the front surface (that is, front side base cloth) and the back side (that is, back side base cloth). For this reason, when a three-dimensional warp knitted fabric is molded with a shape-retaining material having such a shape, the shape-retaining material is crushed at the top portion of the bowl shape, and a constant thickness can not be maintained. was there.

  Such a problem is particularly caused by molding a three-dimensional warp knitted fabric having substantially the same characteristics (in particular, the fabric elongation and the fabric hardness) on the front side and the back side as in the three-dimensional warp knitted fabric of Patent Document 1. It is noticeable when processing. And in the case of the shape retaining material in which a part is crushed in this way, the cushioning property is impaired, and the problem that wearing comfort worsens also occurs.

  The present invention has been made in view of the above circumstances, and a three-dimensional shape capable of maintaining a substantially constant thickness without being crushed even when molded into a three-dimensional shape such as a bowl shape. The purpose is to provide a structured warp knitted fabric.

  In order to achieve the above object, as a result of intensive studies, the present inventors have molded the three-dimensional shape by configuring the front side base fabric to be preferentially stretched in the wale direction from the course direction, The inventors have found that a three-dimensional warp knitted fabric capable of maintaining a substantially constant thickness without collapsing can be achieved, and the present invention has been completed.

  That is, the three-dimensional warp knitted fabric according to the present invention comprises a front side base cloth and a back side base cloth arranged apart from each other, and a connecting yarn which reciprocates between the front side base cloth and the back side base cloth The knitted fabric is a three-dimensional warp knitted fabric, and the front side base fabric is a mesh structure knitted by covering yarns, the back side base fabric is a plain structure, and the elongation in the course direction of the front side base fabric is the back side. It is characterized in that it is smaller than the elongation in the course direction of the backing fabric, and the elongation in the wale direction of the front substrate and the elongation in the wale direction of the back substrate are substantially equal.

  According to such a configuration, the front-side base fabric has priority over the course direction in the wale direction rather than the course direction even when molded into a product having a three-dimensional shape (in particular, a product having different degrees of curve on the front and back). By stretching, a three-dimensional warp knitted fabric is realized which can mold a product having a substantially constant thickness without collapsing.

  In addition, each of the front side backing and the back side backing is subjected to a tensile test at 20 ° C., and the elongation in the course direction of the front side backing and the back side backing measured at a tension of 120 N is X1 [%] and X2 [ It is desirable to satisfy the relation that | X1-X2 |

  Moreover, it is desirable that elongation X1 in the course direction of a front side base fabric is 25 to 125%, and elongation X2 in the course direction of a back side base fabric is 150 to 250%.

The elastic modulus at 20 ° C. in the course direction of the front side base fabric is 0.3 to 0.9 N / mm ² , and the elastic modulus at 20 ° C. in the course direction of the back side base fabric is 1 to 1.5 N / mm It is desirable that it is ² .

  In addition, each of the front side backing and the back side backing is subjected to a tensile test at 20 ° C., and the elongation in the wale direction of the front side backing and the back side backing measured at a tension of 120 N is Y1 [%] and Y2 [ It is desirable to satisfy the relationship that | Y1−Y2 | is 30 or less when%].

  Further, it is desirable that the elongation Y1 in the wale direction of the front side base fabric and the elongation Y2 in the wale direction of the back side base fabric be 150 to 250%, respectively.

Further, it is preferable that the elastic modulus at 20 ° C. in the wale direction of the front side base fabric and the elastic modulus at 20 ° C. in the wale direction of the back side base fabric be 0.1 to 0.5 N / mm ² .

  Further, it is desirable that the covering yarn is composed of a polyurethane core yarn and a polyester sheath yarn.

  Further, it is desirable that the connecting yarn be constituted by a synthetic fiber monofilament yarn.

  In addition, the thickness of the connecting yarn is preferably 30 to 100 dtex.

  In addition, it is desirable that the mesh density of the front side base fabric be 50 to 60 pieces / ridge in the course direction and 30 to 40 pieces / ridge in the wale direction.

  Moreover, it is desirable that thickness is 8-12 mm.

  Moreover, it is desirable to use a molded article of a three-dimensional warp knitted fabric as a bra cup material.

  As described above, according to the present invention, a three-dimensional warp knitted fabric capable of maintaining a substantially constant thickness without crushing even when molded into a product having a three-dimensional shape is realized. .

FIG. 1 is a perspective view showing a schematic configuration of a three-dimensional warp knitted fabric according to an embodiment of the present invention. Fig.2 (a) is the photograph which image | photographed the external appearance (plane) of front side base fabric, FIG.2 (b) is an enlarged photograph of front side base fabric shown to Fig.2 (a). Fig.3 (a) is the photograph which image | photographed the external appearance (plane) of the back side base fabric, FIG.3 (b) is an enlarged photograph of the back side base fabric shown in FIG.3 (b). FIG. 4 is a view showing the configuration of a knitting machine used to knit a three-dimensional warp knitted fabric according to an embodiment of the present invention. FIG. 5 is a view showing an example of a knitting structure of constituent yarns used to knit a three-dimensional warp knitted fabric according to an embodiment of the present invention. FIG. 6 is a graph showing the relationship between tension and elongation in the course direction of the front and back base fabrics of the three-dimensional warp knitted fabric obtained in each Example. FIG. 7 is a graph showing the relationship between tension and elongation in the wale direction of the front and back base fabrics of the three-dimensional warp knitted fabric obtained in each Example. FIG. 8 is a graph showing the relationship between tension and elongation in the course direction of the front and back base fabrics of the three-dimensional warp knitted fabric obtained in Comparative Example 1. FIG. 9 is a graph showing the relationship between tension and elongation in the wale direction of the front and back base fabrics of the three-dimensional warp knitted fabric obtained in each example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the constituent elements, types, combinations, materials, shapes, relative arrangements, and the like described in this embodiment are not intended to limit the scope of the present invention thereto alone, unless specific descriptions are given. Not too much. In the drawings, the same or corresponding portions are denoted by the same reference characters and description thereof will not be repeated.

(Composition of three-dimensional warp knitted fabric 10)
FIG. 1 is a perspective view showing a schematic configuration of a three-dimensional warp knitted fabric 10 according to an embodiment of the present invention.
The three-dimensional structure warp knitted fabric 10 of the present embodiment is, for example, molded into a product (for example, a shape-retaining material) having a three-dimensional shape such as a bowl shape.
This three-dimensional structure warp knitted fabric 10 is a connection that reciprocates between a pair of front side base cloth 12 and back side base cloth 14 arranged apart from each other, and between the front side base cloth 12 and the back side base cloth 14 to bond them together. A double Raschel three-dimensional base fabric knitted from yarn 16;

The front side backing 12 comprises a mesh structure knitted by covering yarns, while the back side backing 14 comprises a plain weave. With this configuration, in the three-dimensional warp knitted fabric 1, the elongation in the course direction of the front side base fabric 12 is smaller than the elongation in the course direction of the back side base fabric 14, and the elongation in the wale direction of the front side base fabric 12. The elongation in the wale direction of the back side base cloth 14 is substantially equal.
Here, the three-dimensional warp knitted fabric 10 is molded into a product having a three-dimensional shape, such as a bowl shape, so that the front side base fabric 12 is on the front side and the back side base fabric 14 is on the back side. The degree of curvature (curvature radius) of such a product (molded product) is larger on the front side than on the rear side.

For this reason, the elongation in the course direction of the front side base cloth and the elongation in the course direction of the back side base cloth are substantially equal, and the elongation in the wale direction of the front side base cloth and the elongation in the wale direction of the back side base cloth If it is approximately equal, that is, if the two sided fabrics have the same structure and the elongation is almost equal, the front side fabric must be stretched in both the course direction and the wale direction during molding, and a large force is required.
When a large force is applied to the three-dimensional warp knitted fabric having such a configuration, the two-sided base fabric is sufficiently stretched to fall before the connecting yarn is stabilized. As a result, the three-dimensional warp knitting at the top portion of the three-dimensional shape The ground (product) is crushed and it can not maintain a certain thickness. In particular, in products where fit is important, such as bra cup materials, the two-sided base fabric is knitted with elastic yarn, but in such a three-dimensional warp knitted fabric, a greater force is necessary to sufficiently stretch the both-side base fabric. The disadvantage is more pronounced.

On the other hand, in the present invention, the elongation in the course direction of the front side base fabric 12 is smaller than the elongation in the course direction of the back side base fabric 14, and the elongation in the wale direction of the front side base fabric 12 The elongation in the wale direction of 14 is substantially equal. That is, the front side base fabric 12 can be stretched preferentially in the wale direction rather than the course direction. For this reason, at the time of molding, even with a relatively small force, the front side base fabric 12 can be sufficiently stretched on the surface side where the degree of curve is large.
At this time, the back side backing cloth 14 also stretches, but since the degree is smaller than the front side backing cloth 12, that is, since the front side backing cloth 12 stretches faster than the back side backing cloth 14, the front side backing cloth 12 and the back side backing cloth 14 The connecting yarns 16 that connect are radially expanded and stabilized. Thereby, it is possible to prevent the three-dimensional structure warp knitted fabric 10 from being crushed at the top portion of the three-dimensional shape, and to keep the thickness of the obtained product uniform.

  Each of the front side backing cloth 12 and the back side backing cloth 14 is subjected to a tensile test at 20 ° C., and the elongation in the course direction of the front side backing cloth 12 and the back side backing cloth 14 measured at a tension of 120 N is X1 [%] Is preferably about 100 to 150, more preferably about 105 to 140, and more preferably about 110 to 130. Is more preferred. As a result, during molding, the front base fabric 12 can be stretched sufficiently and faster than the back base fabric 14. For this reason, it is possible to obtain a product having a uniform thickness and having a desired three-dimensional shape.

  According to the study of the present inventors, when a tensile test is performed on the front side backing cloth 12 and the back side backing cloth 14 at 20 ° C., the front side backing cloth 12 and the back side backing cloth 14 measured with a tension of 120 N. It has been found that the difference in the degree of elongation in the course direction reflects the difference in the degree (speed) at which the front substrate 12 and the back substrate 14 actually stretch during molding.

  Although the specific value of the elongation X1 in the course direction of the front side base fabric 12 is not particularly limited, it is preferably about 25 to 125%, and more preferably about 45 to 105%. On the other hand, the specific value of the elongation X2 in the course direction of the back side base fabric 14 is also not particularly limited, but is preferably about 150 to 250%, and more preferably about 170 to 230%. By setting both of the elongations X1 and X2 in the above-mentioned range, it is possible to more reliably obtain a product having a uniform thickness and an intended three-dimensional shape.

Further, elastic modulus at 20 ° C. in the course direction of the front base fabric 12 is preferably about 0.3~0.9N / mm ^2, to be about 0.4~0.8N / mm ² More preferable. On the other hand, the elastic modulus at 20 ° C. in the course direction of the back side base fabric 14 is preferably about 1 to 1.5 N / mm ^2, and more preferably about 1.1~1.4N / mm ² . By setting the elastic modulus at 20 ° C. in the course direction of the front side base fabric 12 smaller than the elastic modulus at 20 ° C. in the course direction of the back side base fabric 14, the front side can be molded with less pressure in molding. The base fabric 12 can be stretched, and the effects as described above can be further improved. In addition, by setting the elastic modulus at 20 ° C. in the course direction of the back side base cloth 14 in the above range, when a product having a bowl-shaped shape (particularly, bra cup material) is manufactured, the fit feeling of the product Can be improved.

  On the other hand, each of the front side backing cloth 12 and the back side backing cloth 14 is subjected to a tensile test at 20 ° C., and the elongation in the wale direction of the front side backing cloth 12 and the back side backing cloth 14 measured at a tension of 120 N is Y1 [% ] And Y2 [%], it is preferable to satisfy the relation that | Y1-Y2 | is 30 or less, it is more preferable to satisfy the relation of about 0 to 20, and the relation of about 1 to 10 is satisfied Is more preferred. Thereby, it becomes easy to manufacture the product (especially bra cup material) which has the three-dimensional shape which curved the front side base fabric 12 in the wale direction.

  Specific values of the elongation Y1 in the wale direction of the front side base cloth 12 and the elongation Y2 in the wale direction of the back side base cloth 14 are not particularly limited, but preferably about 150 to 250%, 170 to 230 It is more preferable that the ratio is about%. Thereby, the effect can be further improved.

The elastic modulus at 20 ° C. in the wale direction of the front side base fabric 12 and the elastic modulus at 20 ° C. in the wale direction of the back side base fabric 14 are not particularly limited, but are about 0.1 to 0.5 N / mm ² Is preferably, and more preferably about 0.2 to 0.4 N / mm ² . The shape stability of the resulting product is enhanced by setting the elastic modulus at 20 ° C. in the wale direction of the front side backing fabric 12 and the elastic modulus at 20 ° C. in the wale direction of the back side backing fabric 14 in the above ranges, respectively. it can.

The front side backing 12 comprises a mesh structure knitted by covering yarns. FIG. 2 is a photograph of the appearance of the front base fabric 12. By forming the front side base fabric 12 with such a mesh structure, it becomes easy to obtain the front side base fabric 12 having a high elongation and a low elastic modulus in the wale direction rather than the course direction.
Here, the covering yarn is a yarn formed by winding a sheath yarn around the drawn core yarn in a single or multiple manner.

Examples of the constituent material of the core yarn (elastic yarn) include polyurethane and natural rubber, and examples of the constituent material of the sheath yarn include polyester and nylon.
Among them, the covering yarn is preferably a yarn composed of a polyurethane core yarn and a polyester sheath yarn. Such covering yarn is preferable because it is low in elasticity and easy to stretch, and has high strength.

  Moreover, it is preferable that the mesh density of the front side base fabric 12 is about 50 to 60 pieces / wedge in the course direction and about 30 to 40 pieces / wedge in the wale direction. According to this configuration, the elongation in the course direction of the surface base fabric 12 can be adjusted to an arbitrary value by a simple operation of changing the repeat course of the yarn constituting the mesh.

On the other hand, the back side base cloth 14 consists of a plain structure. FIG. 3 is a photograph of the appearance of the back side base cloth 14. Here, the plain structure refers to a knitted structure in which all the loops are uniformly connected. By forming the back side base cloth 14 with such a plain structure, it becomes easy to obtain the back side base cloth 14 with a low elongation and a high elastic modulus.
As a yarn for knitting the back side base fabric 14, a wooly yarn (bulk textured yarn) of synthetic fibers (polyester, acrylic, nylon, rayon, etc.) is preferable from the viewpoint of flexibility, abrasion resistance, etc.

The connecting yarns 16 are knitted between the front side base cloth 12 and the back side base cloth 14 so as to maintain the distance between the front side base cloth 12 and the back side base cloth 14. It is a part that imparts sex and cushioning properties. For this reason, the tissue formed by the connecting yarn 16 is preferably a tissue which can maintain its thickness without being collapsed or wrinkled in one direction with respect to the pressure from above (that is, from the front side base fabric 12).
Therefore, the connecting yarn 16 is preferably made of synthetic fiber monofilament yarn. By using a synthetic fiber monofilament yarn, the thickness of the three-dimensional warp knitted fabric 10 can be secured.

  The thickness of the connecting yarn 16 is preferably larger in order to ensure an appropriate thickness of the three-dimensional warp knitted fabric 10 and to obtain high shape stability, and in order to obtain high elasticity and flexibility, The thinner is preferable. Taking these into consideration, the specific value of the thickness of the connecting yarn 16 is preferably about 30 to 100 dtex, and more preferably about 50 to 80 dtex.

  Further, the thickness of the three-dimensional warp knitted fabric 10 is preferably about 8 to 12 mm, about 10 to 11 mm, from the viewpoint of exhibiting sufficient formability by molding while securing flexibility and cushioning property. It is more preferable to In addition, the air permeability of the three-dimensional structure warp knitted fabric 10 can be sufficiently enhanced by configuring the front side base fabric 12 with a mesh structure and setting the thickness of the three-dimensional structure warp knitted fabric 10 in the above range.

(Method of manufacturing three-dimensional warp knitted fabric 10)
Next, a method of manufacturing the three-dimensional warp knitted fabric 10 will be described. FIG. 4 is a view showing the configuration of a knitting machine 100 having double-row knitting needle rows used to knit the three-dimensional structure warp knitted fabric 10 (double Raschel three-dimensional base fabric). Here, the symbols L1 to L6 indicate guides for guiding yarns, the symbol 103 indicates the front needle bed trick plate, and the symbol 104 indicates the back needle bed trick plate. There is. In addition, reference numeral 101 denotes a front needle, reference numeral 102 denotes a back needle, and reference numeral 105 denotes an interval between hooks.

  Base yarns S1 and S2 are passed through the guides L1 and L2, and the back side base fabric 14 is formed by the base yarns S1 and S2. In the guides L5 and L6, the ground yarns S5 and S6 are passed, and the front side base fabric 12 is formed by the ground yarns S5 and S6. Further, base yarns S3 and S4 of the connecting yarn 16 connecting the front side base cloth 12 and the back side base cloth 14 are passed through the guides L3 and L4, and the front side base cloth 12 and the rear side base cloth are made by the base yarns S3 and S4. A gap is formed between them.

  FIG. 5 is a view showing an example of a knitting structure of each component yarn used to knit the three-dimensional warp knitted fabric 10. As shown in FIG. In FIG. 5, “•” (black point) indicates the positions of the front needle 101 and the back needle 103, and indicates the front side knitting needle row by “F” and the back side knitting needle row by “B”. There is. Further, the lower numbers of the knitting of each knitting structure indicate knitting needle position numbers.

  As shown in FIG. 5, the position of the base yarn S1 of the outermost knitting structure of the back side base fabric 14 swings in from the knitting needle position number 1 to the front needle 101 by the guide L1, and the knitting needle position number 2 is over After wrapping, swing out, underlap at knitting needle position number 2, swing in from knitting needle position number 1, swing out after overlapping to knitting needle position number 0, and underlap at knitting needle position number 0 It is an open eye that makes one cycle.

  The position of the base yarn S2 of the second knitted fabric from the outside of the back side base cloth 14 swings in from the knitting needle position number 0 to the front needle 101 by the guide L2, and swings out after overlapping to the knitting needle position number 1 , Under-lap to knitting needle position number 3, swing in from knitting needle position number 3, swing out after overlapping to knitting needle position number 2, open stitch where under-wrap to knitting needle position number 0 is one cycle It is.

  The position of the base yarn S3 of the knitting structure on the back side base fabric 14 side of the connecting yarn 16 is swung in from the knitting needle position number 1 with respect to the front needle 101 by the guide L3 and is swung out after overlapping to the knitting needle position number 0 Under-laps to knitting needle position number 3 and swings in from knitting needle position number 3 to back needle 102, overlaps after knitting needle position number 2 and then swings out, performs under-lap to knitting needle position number 6, front Swing in with respect to the needle 101 from the knitting needle position number 6 and swing out after overlapping to the knitting needle position number 7 and perform underlap to the knitting needle position number 4 and swing in from the knitting needle position number 4 to the back needle 102 Then, after overlapping to the knitting needle position number 5, swing out, and under the knitting needle position number 1 It is a closed eyes and one cycle to make a wrap.

  The position of the base yarn S4 of the knitting structure on the front side base fabric 12 side of the connecting yarn 16 is swung in from the knitting needle position number 1 to the front needle 101 by the guide L4, and is swung out after overlapping to the knitting needle position number 0 Under-laps to knitting needle position number 3 and swings in from knitting needle position number 3 to back needle 102, overlaps after knitting needle position number 2 and then swings out, performs under-lap to knitting needle position number 6, front Swing in with respect to the needle 101 from the knitting needle position number 6 and swing out after overlapping to the knitting needle position number 7 and perform underlap to the knitting needle position number 4 and swing in from the knitting needle position number 4 to the back needle 102 Then, after overlapping to the knitting needle position number 5, swing out, and under the knitting needle position number 1 It is a closed eyes and one cycle to make a wrap.

  The position of the base yarn S5 of the second knitted fabric from the outside of the front side base fabric 12 is underwrapped to the knitting needle position number 1 by the guide L5, and swings in from the knitting needle position number 1 to the back needle 102, and the knitting needle position After overlapping to number 0, swing out, perform underlap at knitting needle position number 0, swing in from knitting needle position number 1, swing up after overlapping to knitting needle position number 2, and underlap at knitting needle position number 2 And swing in from the knitting needle position number 2 and swing out after overlapping to the knitting needle position number 3 and underlap at knitting needle position number 3 and swing in from knitting needle position number 2 and over to knitting needle position number 1 It is an opening that makes it one cycle to perform swing out after wrapping.

  The position of the base yarn S6 of the outermost knitting structure of the front-side base fabric 12 is underwrapped with the knitting needle position number 2 by the guide L6, and swings in from the knitting needle position number 2 to the back needle 102, and the knitting needle position number After overlapping up to 3, swing out, underlap at knitting needle position No. 3, swing in from knitting needle position No. 2, swing over after overlapping to needle position No. 1, underlap at knitting needle position No. 1 Perform swing-in from knitting needle position No. 1 to swing out after overlapping to knitting needle position No. 0, perform underlap at knitting needle position No. 0, swing in from knitting needle position No. 1 and overlap to knitting needle position No. 2 It is an opening that makes swinging out one cycle after that.

(Processing method to bra cup material)
First, the obtained three-dimensional structure warp knitted fabric 10 (green machine) is removed from the knitting machine 100 and subjected to heat treatment. This heat treatment can be performed, for example, by blowing dry hot air at a predetermined temperature (about 150 to 180 ° C.) to the three-dimensional warp knitted fabric 10. Thereby, the three-dimensional warp knitted fabric 10 is adjusted to a uniform thickness (about 10 to 11 mm).

  Next, the three-dimensional warp knitted fabric 10 after heat treatment is set in the heated female-side molding machine provided with a bowl-shaped recess with the front side base fabric 12 on the lower side, and a protrusion having a shape corresponding to the recess The heated male side molding machine is superimposed on the female side molding machine. Thereby, the three-dimensional warp knitted fabric 10 is heated and pressed (molded) and molded into a product having a uniform thickness (about 5 to 6 mm) having a bowl-shaped shape, that is, a bra cup material.

  In the present invention, since the front side base fabric 12 is configured to expand preferentially in the wale direction rather than the course direction, the bra cup material can maintain a substantially constant thickness without collapsing at the top portion thereof. it can.

  Next, a specific embodiment of the three-dimensional warp knitted fabric 10 will be described. The three-dimensional warp knitted fabric of the present invention is not limited to the present embodiment.

1. Production of three-dimensional warp knitted fabric (Examples 1 and 2)
As a knitting machine, double Raschel machine RD6DPLM / 8 · RD6DPLM / 12-3 (22 gauge / 2.54 cm, distance between hooks 11 mm) manufactured by KARL MAYER is used, and the following S1 to S6 are used as ground yarns. The three-dimensional warp knitted fabric of Examples 1 and 2 was manufactured according to the method of knitting shown in FIG.
In addition, three-dimensional-structure warp knit fabric made the finish thickness 10 mm +/- 1.0 mm, respectively.

S1: Polyurethane thread (78 dtex)
S2: Polyester wooly yarn (66 dsciccs, 72 filament counts)
S3: Polyester monofilament yarn (56 dtex)
S4: Polyester monofilament yarn (56 dtex)
S5: Covering yarn (polyurethane core yarn (22 dtex), polyester sheath yarn (84 dtex, 72 filament counts))
S6: Covering yarn (polyurethane core yarn (22 dtex), polyester sheath yarn (84 dtex, filament count 72))

(Comparative Examples 1 and 2)
A three-dimensional warp knitted fabric of Comparative Examples 1 and 2 was manufactured in the same manner as in Examples 1 and 2 except that the types of base yarns of S5 and S6 were changed as follows.
S5: Polyester Wooly Yarn (66 dS Sitax, 72 filament counts)
S6: Polyurethane thread (78 dtex)

2. Heat Treatment to Three-Dimensional Structure Warp Fabric The three-dimensional structure warp knit fabric obtained in each example and each comparative example was heat-treated at 170 ° C. for 1 minute. The thickness of the three-dimensional warp knitted fabric after heat treatment was about 10 mm.

3. Measurement of Elongation and Elastic Modulus of Three-Dimensional Structure Warp Knitted Fabric After Heat Treatment First, a sample having a size of 150 mm × 100 mm was cut out from each three-dimensional structure warp knitted fabric after heat treatment. Thereafter, the connecting yarn of each sample was cut to separate the front side backing and the back side backing. Next, conditions of a temperature of 20 ° C., a humidity of 65% RH, and a tensile speed of 200 mm / min using a tensile tester (“AGS-1 KNG” manufactured by Shimadzu Corporation) for the front side cloth and the back side cloth of each sample Performed a tensile test.

The results are shown in the graphs of FIGS.
In addition, the elongations at a tension of 120 N and the elastic modulus of the front side backing cloth and the back side backing cloth of each sample are shown in Table 1 below.

4. Processing into bra cup material Each three-dimensional warp knitted fabric after heat treatment is set on a female side molding machine provided with a bowl-shaped recess with the front base fabric facing downward, and a protrusion having a shape corresponding to the recess is provided. The male side molding machine was superimposed on the female side molding machine. And the temperature of the male side molding machine and the female side molding machine was processed as 185-190 degreeC, and the bra cup material of thickness about 6 mm was obtained.

  As a result, the bra cup material processed using the three-dimensional warp knitted fabric obtained in each Example had a desired shape and uniform thickness. On the other hand, the bra cup material processed using the three-dimensional warp knitted fabric obtained in each comparative example was crushed at the top portion and became uneven thickness.

The above is the description of the embodiment and examples of the present invention, but the present invention is not limited to the above configuration, and various modifications are possible within the scope of the technical idea of the present invention. .
In addition, the embodiments disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 10 three-dimensional structure warp knitted fabric 12 front side base cloth 14 back side base cloth 16 connecting thread 100 knitting machine 101 front needle 102 back needle 103, 104 trick plate 105 hook interval L1, L2, L3, L4, L5, L6 guide S1, S2, S3, S4, S5, S6 ground thread

Claims (13)

A three-dimensional warp knitted fabric knitted from a front side base cloth and a back side base cloth which are disposed apart from each other, and a connecting yarn which reciprocates between the front side base cloth and the back side base cloth and joins them. ,
The front side backing comprises a mesh structure knitted by covering yarns,
The back side base fabric is made of plain tissue,
The elongation in the course direction of the front side base fabric is smaller than the elongation in the course direction of the back side base fabric, and the elongation in the wale direction of the front side base fabric is the elongation in the wale direction of the back side base fabric. A three-dimensional warp knitted fabric characterized by being substantially equal.   Each of the front side backing cloth and the back side backing cloth is subjected to a tensile test at 20 ° C., and the elongation in the course direction of the front side backing cloth and the back side backing cloth measured at a tension of 120 N is X1 [%] The three-dimensional warp knitted fabric according to claim 1, wherein when X2 [%], the relationship that | X1-X2 | is 100 to 150 is satisfied.   The three-dimensional structure according to claim 2, wherein the elongation X1 in the course direction of the front side base fabric is 25 to 125%, and the elongation X2 in the course direction of the back side base fabric is 150 to 250%. Warp knitted fabric. The elastic modulus at 20 ° C. in the course direction of the front side base fabric is 0.3 to 0.9 N / mm ² , and the elastic modulus at 20 ° C. in the course direction of the back side base fabric is 1 to 1.5 N / mm The three-dimensional warp knitted fabric according to any one of claims 1 to 3, which is ² .   Each of the front side backing and the back side backing was subjected to a tensile test at 20 ° C., and the elongation in the wale direction of the front side backing and the back side backing measured at a tension of 120 N was Y1 [%] and The three-dimensional warp knitted fabric according to any one of claims 1 to 4, wherein when Y2 [%], the relation that | Y1-Y2 | is 30 or less is satisfied.   The three-dimensional warp knitted fabric according to claim 5, wherein the elongation Y1 in the wale direction of the front side base fabric and the elongation Y2 in the wale direction of the back side base fabric are each 150 to 250%. The elastic modulus at 20 ° C. in the wale direction of the front side base fabric and the elastic modulus at 20 ° C. in the wale direction of the back side base fabric are each 0.1 to 0.5 N / mm ^2. The three-dimensional warp knitted fabric according to any one of claims 1 to 6.   The three-dimensional warp knitted fabric according to any one of claims 1 to 7, wherein the covering yarn is composed of a polyurethane core yarn and a polyester sheath yarn.   The three-dimensional warp knit fabric according to any one of claims 1 to 8, wherein the connecting yarn is constituted by a synthetic fiber monofilament yarn.   The thickness of the said connection thread | yarn is 30-100 dtex, The three-dimensional-structure warp knit fabric as described in any one of the Claims 1-9 characterized by the above-mentioned.   11. The mesh density of the front side base fabric is 50 to 60 per weir in the course direction and 30 to 40 per wel in the wale direction, according to any one of claims 1 to 10. Three-dimensional warp knitted fabric.   The three-dimensional warp knitted fabric according to any one of claims 1 to 11, having a thickness of 8 to 12 mm. The three-dimensional warp knitted fabric according to any one of claims 1 to 12, wherein a molded article of the three-dimensional warp knitted fabric is used as a bra cup material.