JP6829042B2 - Waist belt mesh fabric and its manufacturing method - Google Patents

Description

The present invention relates to a mesh fabric for a waist belt suitable for applications requiring appropriate rigidity and breathability, and a method for producing the same.

Conventionally, a waist belt that supports the body by being wrapped around the waist of the body, fixes the affected spine and reduces the load, assists the weakness of the back and lumbar muscles, reduces back pain, corrects the body shape, etc. is known. ing. In this type of waist belt, for example, a fabric having an appropriate rigidity is used to fix and support the body in a predetermined form on a portion corresponding to the back of the body.

For example, Patent Document 1 discloses a waist belt having a rigid processed fabric on the back portion serving as a backrest. The rigid processed fabric of the same document is formed of a core-sheath type composite filament yarn or the like in which the melting point of the sheath component is lower than the melting point of the core component. Then, by applying heat setting to the rigid processed fabric, the sheath components of the core-sheath type composite filament yarn are fused, and a predetermined rigidity is obtained.

Japanese Unexamined Patent Publication No. 2000-271159

As described above, the fabric used for products such as waist belts is required to have an appropriate hardness in order to secure the function of the product to support the body and the like. Further, in this kind of body-worn product, a breathable fabric is required in order to suppress problems such as sweating and rash caused by long-term wearing of the product.

However, in the above-mentioned rigidified processed fabric of the prior art, there is room for improvement from the viewpoint of improving the feel while maintaining the breathability and hardness of the fabric. That is, if a mesh-like fabric is used to ensure breathability and the fabric is hardened to increase rigidity, the texture of the fabric is impaired. On the contrary, if the fabric is softened in order to improve the feel of the fabric, the shape-maintaining function required for the waist belt or the like is impaired.

Specifically, in a general knitted fabric, the fabric becomes thicker at the portion where the knitted yarns overlap, so that a convex portion is formed on the surface of the fabric corresponding to such an intersecting portion of the knitted yarns, and the fabric is formed. The surface is uneven. In the above-mentioned rigid processed fabric of the prior art, the yarns are fused and solidified by the heat setting, so that the convex portion on the surface of the fabric formed corresponding to the overlap of the yarns is formed hard. Therefore, the skin and the like are stimulated by the hard convex portion protruding from the surface of the fabric, so that the rigid-processed fabric of the prior art is not soft to the touch.

In addition, in order to improve the feel of the skin, a separate cloth or the like may be attached to the surface of the rigidized fabric so that the convex portion formed on the surface of the rigid processed fabric does not come into direct contact with the human body or the like. It was broken. However, the method of attaching another cloth to the stiffened cloth has a problem that the air permeability of the stiffened cloth is hindered.

Further, the above-mentioned rigid processed fabric of the prior art has a problem that a part of the filament of the knitting yarn or the like easily jumps out from the end portion of the fabric. When a hard and thin filament or the like protruding from the vicinity of the edge of the rigid processed fabric comes into contact with the skin, pain may be felt. Therefore, conventionally, the edge of the stiffened fabric has been wrapped with a strip-shaped separate cloth such as bias tape so that the edge of the fabric does not come into direct contact with the skin. In addition, the edge winding finish was performed twice, and two bias tapes or the like were laminated. However, when the separate cloth for edge winding covering the edge of the fabric is thin, a hard thread-like filament or the like may penetrate the separate cloth for edge winding and protrude to the outside.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a waist belt mesh fabric having appropriate rigidity, excellent breathability, thinness and softness, and a method for producing the same. To provide.

The waist belt mesh fabric of the present invention is for a waist belt containing a multifilament knitting yarn in which the core component is covered with a sheath component and formed by a plurality of filaments having a melting point of the sheath component lower than the melting point of the core component. The mesh fabric has a knitting structure in which a plurality of the knitting yarns are aligned and accompanies each other, and in a portion of the knitting structure in which the plurality of the knitting yarns overlap, the sheath component of the knitting yarns that are in contact with each other is The bundle of the knitting yarns that are fused to each other and overlapped are crushed in the thickness direction of the waist belt mesh fabric so that the plurality of filaments spread more in the direction along the surface of the waist belt mesh fabric. It is characterized by being.

A method of manufacturing a waist belt mesh fabric of the present invention, the multifilament core component is formed by a plurality of filaments is low melting point of the sheath component than the melting point of the core component is covered with the sheath component sheath-core In the step of knitting the knitted fabric, which comprises a step of knitting a mesh-like knitted fabric containing structural threads and a calendering step of passing the knitted fabric between a pair of calender rolls to heat and pressurize the knitted fabric. The knitted fabric is knitted by aligning a plurality of the core-sheath structural yarns, and in the calendering step, a plurality of the core-sheath structural yarns accompanying the knitted fabric are formed along the surface of the knitted fabric. It is characterized in that it is crushed in the thickness direction of the knitted fabric so that it spreads more in the vertical direction .

According to the waist belt mesh fabric of the present invention, a waist belt mesh containing a knitting yarn in which the core component is covered with a sheath component and formed by a plurality of filaments having a melting point of the sheath component lower than the melting point of the core component. In the portion of the fabric in which the plurality of knitting yarns overlap, the sheath components of the knitting yarns that are in contact with each other are fused to each other, and the bundle of the overlapping knitting yarns is crushed in the thickness direction of the fabric. ing. As a result, rigidity and breathability suitable for applications such as waist belts can be obtained, and the protrusions formed on the surface of the mesh fabric for waist belts can be reduced to improve the feel of the mesh fabrics for waist belts. be able to.

Further, since the convex portion formed on the surface of the mesh fabric for waist belt is reduced and the feel is improved, for example, when the mesh fabric for waist belt of the present invention is used as the material of the waist belt or the like, the mesh for waist belt is used. There is no need to attach another cloth to the surface of the cloth. As a result, the breathability of the product such as the waist belt is improved, and the product can be finished thin and lightweight.

In addition, since the mesh fabric for waist belts has a bundle of overlapping knitting yarns crushed in the thickness direction of the fabric, the knitted fabric is used in a state where the knitted fabric is heat-set as it is. Is also thinly formed. As a result, products such as waist belts can be formed thinly.

Further, the sheath components of the knitting yarns that are in contact with each other are fused to each other, and the bundles of the overlapping knitting yarns are crushed in the thickness direction of the fabric, so that the filaments and the like constituting the knitting yarns are used for the waist belt. It is possible to prevent the mesh fabric from sticking out from the edge. This improves the feel of the edges of the waist belt mesh fabric. In addition, since it is possible to prevent filaments and the like constituting the knitting yarn from penetrating the bias tape or the like covering the end of the mesh fabric for the waist belt and protruding to the outside, the defective rate of the product using the mesh fabric for the waist belt. Can be lowered. Further, it is not necessary to stack two bias tapes or the like, and further, the edge finish by the bias tape or the like can be eliminated, and the end portion of the mesh fabric for the waist belt can be used as the end portion of the product as it is. Therefore, the productivity of the product using the mesh fabric for the waist belt can be increased.

Further, according to the mesh fabric for waist belt of the present invention, the core component is formed of a polyester resin having a melting point of 230 ° C. to 270 ° C., and the sheath component is formed of a polyester resin having a melting point of 130 ° C. to 190 ° C. May be done. As a result, when the waist belt mesh fabric is heated under a predetermined temperature condition, the core component does not melt and only the sheath component can be melted or softened. Therefore, the sheath component is fused with the sheath component of another filament that is in contact with the sheath component or another knitting yarn, and the core components of the plurality of filaments constituting the knitting yarn are covered with the sheath component and integrated, and the mesh fabric for the waist belt is integrated. Provides a given rigidity. As a result, the waist belt mesh fabric can exhibit an excellent morphological maintenance function that suitably supports the body when used as a material for the waist belt or the like.

Further, according to the waist belt mesh fabric of the present invention, the thickness of the knitting yarn is 200 dtex (decitex) to 350 dtex, and the thickness of the waist belt mesh fabric is 0.5 mm to 1.0 mm. Is also good. As described above, the knitting yarn having an appropriate thickness is used and finished to an appropriate thickness, so that the mesh fabric 1 for the waist belt has strength, rigidity and breathability particularly suitable for applications such as the waist belt. Moreover, it is a material that is soft to the touch.

Further, according to the method for producing a mesh fabric for a waist belt of the present invention, a core-sheath structure in which a core component is covered with a sheath component and formed by a plurality of filaments having a melting point of the sheath component lower than the melting point of the core component. It includes a step of knitting a mesh-like knitted fabric containing threads and a calendering step of passing the knitted fabric between a pair of calender rolls to heat and pressurize the knitted fabric. As a result, the overlapping bundles of knitting yarns of the waist belt mesh fabric are fused in a crushed state by a pair of calendar rolls. Therefore, it is possible to obtain a mesh fabric for a waist belt which has rigidity and breathability suitable for applications such as a waist belt, has small protrusions formed on the surface, and is thin and soft to the touch.

Further, by pressurizing the knitted fabric while heating it in the calendering process, the gap between the knitted yarns used for the mesh fabric for the waist belt can be reduced and the knitted yarns can be fused in a state of being in close contact with each other. As a result, it is possible to prevent the filament of the knitting yarn from protruding from the end of the mesh fabric for the waist belt. Therefore, when the mesh fabric for the waist belt is touched, it is less likely to get caught, and the touch near the end is improved.

Further, by heating and pressurizing the knitted fabric in the calendering process, the bundle of the overlapping knitting yarns of the mesh fabric for the waist belt is crushed in the thickness direction of the fabric to form a substantially flat shape, and the waist belt. Even at the end of the mesh fabric, the bundle of knitting yarns becomes substantially flat. As a result, it is possible to improve the feel of the vicinity of the end portion of the mesh fabric for the waist belt.

Further, according to the method for producing a mesh fabric for a waist belt of the present invention, a linear pressure of 35 kN / m to 100 kN / m may be applied to the knitted fabric in the calendering process. As a result, the sheath component can be fused in a state where the knitted fabric is appropriately crushed and the knitted yarns are appropriately brought into close contact with each other. That is, it is possible to prevent the opening of the waist belt mesh fabric from being blocked due to excessive crushing and the rigidity of the waist belt mesh fabric from being lowered due to poor adhesion of the knitting yarn. Therefore, it is possible to manufacture a thin and soft mesh fabric for a waist belt, which has appropriate rigidity and breathability.

Further, according to the method for producing a mesh fabric for a waist belt of the present invention, the core component is formed of a polyester resin having a melting point of 230 ° C. to 270 ° C., and the sheath component is a polyester having a melting point of 130 ° C. to 190 ° C. In the calendering step, the knitted fabric may be heated by the calender roll, which is formed of resin and heated to a temperature of 150 ° C. to 220 ° C. As a result, it is possible to melt or soften only the sheath component while maintaining the core component without melting, so that the knitting yarns can be suitably fused to each other, and the knitting yarn has rigidity suitable for a waist belt or the like, resulting in morphological stability. An excellent mesh fabric for waist belt can be obtained.

Further, according to the method for producing a mesh fabric for a waist belt of the present invention, the knitted fabric contains a regular yarn formed by a plurality of filaments made of a single material having a melting point higher than that of the sheath component. In the step of knitting the ground, the knitted fabric may be knitted by aligning the core-sheath structure yarn and the regular yarn. As a result, the core-sheath structure yarn and the regular yarn are dispersedly arranged in the portion where the knitting yarns of the knitted fabric overlap each other. As a result, the heat fusion between the sheath component of the core-sheath structure yarn and the filament of the regular yarn is improved, the filament of the regular yarn is less likely to pop out, the convex portion of the surface is small, and the mesh fabric for the waist belt is soft to the touch. Can be obtained.

Of (A) mesh fabric for waist belt, (B) core-sheath structure yarn used for mesh fabric for waist belt, and (C) knitted yarn for knitted fabric as a material for mesh fabric for waist belt according to the embodiment of the present invention. It is a schematic diagram which shows typically the cross section of a bundle. It is a schematic diagram which shows the vicinity of the guide hole of the knitting machine which knits the mesh cloth for a waist belt which concerns on embodiment of this invention. It is a flow chart which shows the manufacturing process of the mesh cloth for a waist belt which concerns on embodiment of this invention. It is the schematic which shows the manufacturing apparatus of the mesh cloth for waist belt which concerns on embodiment of this invention. It is a figure which shows the calender processing in the manufacturing method of the mesh cloth for a waist belt which concerns on embodiment of this invention. It is a top view of the waist belt which uses the mesh cloth for the waist belt which concerns on embodiment of this invention. It is a top view which shows the other example of the waist belt which uses the mesh cloth for the waist belt which concerns on embodiment of this invention. It is a table which shows the evaluation result of the mesh cloth for a waist belt which concerns on Example and comparative example of this invention. It is a photograph which shows the cross section of the mesh cloth for a waist belt which concerns on (A) Example and (B) comparative example of this invention. It is a photograph which shows the cross section of the mesh cloth for a waist belt which concerns on (A) another Example and (B) another comparative example of this invention. It is a table which shows the measurement result of (A) friction coefficient, (B) surface roughness of the mesh cloth for waist belt which concerns on Example and comparative example of this invention.

Hereinafter, the mesh fabric for a waist belt and the manufacturing method thereof according to the embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a schematic view schematically showing a cross section of the waist belt mesh fabric 1 according to the embodiment of the present invention, and FIG. 1B is a core sheath structure yarn 3 used for the mesh fabric 1. FIG. 1 (C) is a schematic view schematically showing a cross section of a portion where the knitting threads 9 of the knitted fabric 2 which is the material of the mesh fabric 1 overlap.

The waist belt mesh fabric 1 (hereinafter referred to as “mesh fabric 1”) is, for example, a mesh-like fabric used for waist belts, supporters, bags, and the like. The mesh fabric 1 is used for a portion of the waist belt 10 shown in FIG. 6 that is fixed to the back side when the waist belt 10 is attached to the body, and has appropriate rigidity for supporting the lumbar spine.

As shown in FIGS. 1A to 1C, the mesh fabric 1 knits a core-sheath structure yarn 3 formed by a plurality of filaments 4 having a core-sheath structure in which the core component 5 is covered with the sheath component 6. It is a mesh-like fabric contained as a thread 9. Further, the mesh fabric 1 may include polyester yarn 7, which is a regular yarn, as the knitting yarn 9. That is, the mesh fabric 1 includes two types of knitting yarns 9, a core-sheath structure yarn 3 and a polyester yarn 7.

As shown in FIG. 1A, the sheath component 6 constituting one core-sheath structure yarn 3 is integrally formed by fusion. Further, in the portion where the plurality of knitting yarns 9 such as the core-sheath structure yarn 3 and the polyester yarn 7 overlap each other, the sheath component 6 of the core-sheath structure yarn 3 that is in contact with each other is joined to each other and is in phase with the core-sheath structure yarn 3. The filament 8 of the polyester yarn 7 in contact is also joined by the sheath component 6. As described above, the mesh fabric 1 is formed to have an appropriate hardness by joining the core-sheath structure yarn 3 which is the knitting yarn 9 of the mesh fabric 1 to another knitting yarn 9 such as the polyester yarn 7. ..

Further, the portion where the knitting yarns 9 such as the core-sheath structure yarn 3 and the polyester yarn 7 overlap is crushed in the thickness direction of the mesh fabric 1 and is formed in a substantially flat shape. That is, the convex portion or the like protruding from the main surface of the mesh fabric 1 in the thickness direction at the portion where the knitting yarns 9 intersect has a small protruding dimension, and the vicinity of the protruding tip is formed substantially flat.

As shown in FIGS. 1A and 1C, the mesh fabric 1 is knitted from knitting yarns 9 such as core-sheath structure yarns 3 and polyester yarns 7, for example, single raschel, double raschel, tricot, warp knit and the like. The material is knitted fabric 2 which is knitted in a mesh shape by one side.

As shown in FIG. 1B, the core-sheath structure yarn 3 used in the mesh fabric 1 is formed of a plurality of filaments 4 having a core-sheath structure in which the core component 5 is covered with the sheath component 6. Here, when the mesh fabric 1 is used for a waist belt or the like, the thickness of the core-sheath structure yarn 3 is preferably 200 dtex to 350 dtex, more preferably 250 dtex to 300 dtex. As a result, the mesh fabric 1 has a thickness and rigidity suitable for applications such as waist belts.

If the core-sheath structure thread 3 is thinner than 200 dtex, the mesh fabric 1 becomes thin, and the rigidity, tear strength, durability, etc. of the mesh fabric 1 decrease. Therefore, the desired performance required for applications such as waist belts is obtained. I can't get it. Further, when the thickness of the core-sheath structure thread 3 is thicker than 350 dtex, the mesh fabric 1 formed becomes thick and the mesh fabric 1 becomes too hard. Therefore, when it is used as a waist belt or the like, it becomes difficult to bend the mesh fabric 1 along the body.

The core component 5 of the filament 4 having a core-sheath structure is formed of, for example, a polyester resin having a melting point of 230 ° C. to 270 ° C. Specifically, polyethylene terephthalate or the like is used as the core component 5. On the other hand, the sheath component 6 is formed of, for example, a polyester resin having a melting point of 130 ° C. to 190 ° C. The sheath component 6 is softened at a temperature lower than the melting point, and can be bonded to another filament 4 or the filament 8 of the polyester yarn 7 in a melted or softened state. It is desirable that the melting point of the core component 5 and the melting point of the sheath component 6 are separated by 30 ° C. or more.

As described above, by using a material having a melting point lower than that of the core component 5 as the sheath component 6, the core-sheath structure yarn 3 is heated to a predetermined temperature, and the sheath component 6 is not melted. Only can be melted or softened. Therefore, as shown in FIG. 1A, the sheath component 6 of the filament 4 is integrally fused to the sheath component 6 of the other filament 4, and the filament of the polyester yarn 7 which is the other knitting yarn 9 is fused. A configuration fused to 8 mag is possible. As a result, the mesh fabric 1 can obtain a predetermined rigidity necessary for supporting and fixing the body in applications such as a waist belt, and can exhibit a desired shape maintaining function.

The mass ratio of the core component 5 and the sheath component 6 contained in the core-sheath structure yarn 3 is preferably 6: 4 to 2: 8, and more preferably 5: 5 to 3: 7. If the sheath component 6 contained in the core-sheath structure yarn 3 is less than 40% by mass, the knitting yarns 9 are not preferably fused to each other, and a desired bonding force may not be obtained. Further, if the sheath component 6 contained in the core-sheath structure yarn 3 exceeds 80% by mass, that is, if the core component 5 is less than 20% by mass, the strength of the mesh fabric 1 is lowered.
The mixing ratio of the core-sheath structure yarn 3 used in the mesh fabric 1 is preferably 40% by mass to 100% by mass, more preferably 50% by mass to 70% by mass, based on the entire mesh fabric 1. Is.

As shown in FIG. 1C, the polyester yarn 7 contained in the mesh fabric 1 is a multifilament yarn composed of a plurality of filaments 8 each made of a single material, and is formed of, for example, a polyester resin or the like. .. The polyester yarn 7 has a melting point higher than that of the sheath component 6 of the core-sheath structure yarn 3, and is a yarn that does not melt in the calendering step S40 (see FIG. 3) described later. Specifically, the melting point of the polyester yarn 7 is 230 ° C to 270 ° C. The thickness of the polyester yarn 7 is preferably 200 dtex to 350 dtex, more preferably 250 dtex to 300 dtex.

In the knitted fabric 2 which is the material of the mesh fabric 1, the cross-sectional shapes of the knitting yarns 9 such as the core-sheath structure yarn 3 and the polyester yarn 7 are formed in a substantially circular shape. Further, in the portion where the plurality of knitting yarns 9 intersect and overlap in a bundle shape, the overlapping bundles of the knitting yarns 9 are formed in a substantially circular cross-sectional shape as a whole. Further, a gap is formed between the filaments 4 constituting the core-sheath structure yarn 3 and between the filaments 8 constituting the polyester yarn 7, and there is also a gap between the knitting yarns 9. .. Then, by executing the calendering step S40 described later using the knitted fabric 2 as a material, the sheath component 6 is melted or softened, and the knitted fabric 2 is solidified in a crushed state in the thickness direction. The mesh fabric 1 shown in 1 (A) is obtained.

FIG. 2 is a schematic view showing the vicinity of the guide hole 31 of the knitting machine 30 for knitting the mesh fabric 1. As shown in FIG. 2, the knitted fabric 2 (see FIG. 1) according to the present embodiment is knitted by aligning the core-sheath structure yarn 3 and the polyester yarn 7. Specifically, the two core-sheath structure yarns 3 and the two polyester yarns 7 are alternately aligned one by one, and a total of four knitting yarns 9 are placed in the same guide hole 31 of the knitting machine 30. It is inserted and organized into the same knitting structure. That is, the knitted fabric 2 has a knitting structure in which two core-sheath structure yarns 3 and two polyester yarns 7 are alternately aligned and accompany each other.

As described above, the core-sheath structure yarn 3 and the polyester yarn 7 are aligned and the knitted fabric 2 is knitted, so that the core-sheath structure yarn 3 and the polyester yarn 7 are dispersed in the portion where the knitting yarn 9 overlaps. Be placed. As a result, the heat fusion between the sheath component 6 of the core-sheath structure yarn 3 and the filament 8 of the polyester yarn 7 is improved, the filament 8 (see FIG. 1) and the like are less likely to pop out, and the convex portion on the surface is small and feels soft to the touch. Good mesh fabric 1 can be obtained.

Next, a method for producing the mesh fabric 1 will be described in detail with reference to FIGS. 3 to 5.
FIG. 3 is a flow chart showing a manufacturing process of the mesh fabric 1. FIG. 4 is a schematic view showing a manufacturing apparatus 20 used in the calendar processing step S40 of the mesh fabric 1. FIG. 5 is a diagram showing calendering in the method for producing the mesh fabric 1.

As shown in FIG. 3, the method for manufacturing the mesh fabric 1 includes a preparation step S10, a heat setting step S20, a stretching step S30, a calendering step S40, and a winding step S50.
First, in the preparation step S10, the knitting machine 30 for knitting the knitted fabric 2 knits the knitted fabric 2 including the core-sheath structural yarn 3 (see FIG. 1). As described above, the knitted fabric 2 is knitted by aligning the core-sheath structure yarn 3 and the polyester yarn 7.

Next, the heat setting step S20 is executed, and the heat setting is applied to the knitted fabric 2 knitted in the preparation step S10. Specifically, the knitted fabric 2 is sent into a warm air heating type chamber whose temperature has been raised to a predetermined temperature of a heat setting device (not shown) in a state where an appropriate tension is applied and the stitches are arranged. Here, the temperature inside the chamber of the heat setting device is appropriately set according to the melting point of the sheath component 6 (see FIG. 1) of the core-sheath structure yarn 3, and is lower than the melting point of the core component 5 (see FIG. 1). For example, 160 ° C to 220 ° C, preferably 170 ° C to 200 ° C.

As the knitted fabric 2 passes through the chamber of the heat setting device and is heated to a predetermined temperature in this way, the sheath component 6 of the core-sheath structure yarn 3 contained in the knitted fabric 2 is fused, and the knitted fabric 2 is heated. The stitches are stable and the rigidity of the knitted fabric 2 is increased.

In addition, the rigidified processed fabric of the prior art was used in a state of being rigidized by being heat-set, but as described above, the hard convex portion protruded from the surface of the fabric and the texture was not good. In addition, the rigidized fabric of the prior art did not feel good at the edges.

Therefore, in the method for producing the mesh fabric 1 according to the present embodiment, in order to improve the feel of the mesh fabric 1, a calendering step S40 or the like is performed after the heat setting step S20.
Specifically, as shown in FIGS. 3 and 4, the knitted fabric 2 that has undergone the heat setting step S20 is stored in a basket 21 or the like. Then, the knitted fabric 2 is set in the manufacturing apparatus 20 that performs calendering.

Next, in the stretching step S30, the knitted fabric 2 is passed between a plurality of tension rolls 22 arranged at predetermined intervals. As a result, the wrinkles and slacks of the knitted fabric 2 are stretched. Then, the knitted fabric 2 that has passed through the tension roll 22 and is stretched is guided to the heating roll 24 by the guide roll 23.

After the stretching step S30, a calendar processing step S40 is performed in which the knitted fabric 2 is heated and compressed by a pair of calendar rolls, a heating roll 24 and a press roll 25. As shown in FIG. 5, the heating roll 24 and the press roll 25 are metal rolls formed in a substantially columnar shape, and are arranged adjacent to each other so that their rotation axes are substantially parallel to each other. A gap through which the knitted fabric 2 can pass is formed between the heating roll 24 and the press roll 25.

The knitted fabric 2 guided to the heating roll 24 moves along the outer circumference of the heating roll 24 heated to a predetermined temperature and is heated by the outer circumference of the heating roll 24. That is, the knitted fabric 2 is heated in contact with the outer circumference of the heating roll 24 in the region A shown by the chain line in FIG. Then, the knitted fabric 2 passes between the heating roll 24 and the press roll 25 in the region B indicated by the chain line, is compressed, and then moves away from the heating roll 24 and along the press roll 25.

The heating temperature of the knitted fabric 2 in the calendering step S40 is, for example, preferably 130 ° C. to 220 ° C., more preferably 140 ° C. to 180 ° C. As a result, as shown in FIG. 1, the core component 5 and the polyester yarn 7 are not melted, only the sheath component 6 is melted or softened, and the knitting yarn 9 such as the core sheath structure yarn 3 and the polyester yarn 7 is adhered. , A mesh fabric 1 having rigidity suitable for a waist belt or the like can be formed.

If the heating temperature of the knitted fabric 2 is higher than 220 ° C., the core component 5 and the polyester yarn 7 may be melted or softened, and the shape of the knitted fabric 2 may be deformed. Further, if the heating temperature is high, there is a problem that the molten sheath component 6 adheres to the heating roll 24. On the other hand, when the heating temperature of the knitted fabric 2 is lower than 130 ° C., the sheath component 6 of the core-sheath structure yarn 3 is not sufficiently melted or softened, and the fusion is insufficient, so that the mesh fabric 1 has a desired hardness and shape. Retention cannot be obtained. The heating temperature in the calendering step S40 may be lower than the heating temperature in the heat setting step S20.

Then, as shown in FIG. 5, the knitted fabric 2 is sandwiched between the heating roll 24 and the press roll 25 and compressed by passing between the heating roll 24 and the press roll 25. At this time, a predetermined load facing the heating roll 24 is applied to the press roll 25. As a result, as shown in FIG. 1 (C), the overlapping portion of the knitting yarn 9 such as the core-sheath structure yarn 3 and the polyester yarn 7 constituting the knitted fabric 2 is formed by the heating roll 24 and the press roll 25 shown in FIG. It is squeezed and crushed as shown in FIG. 1 (A). In this way, the convex portion formed on the surface of the mesh fabric 1 is crushed into small pieces, the mesh fabric 1 is formed thin, and the mesh fabric 1 feels good to the touch. The coefficient of friction of the main surface of the mesh fabric 1 is preferably 0.2 or less. The surface roughness of the main surface of the mesh fabric 1 is preferably 15 μm or less.

The linear pressure applied to the knitted fabric 2 by the press roll 25 is preferably 35 kN / m to 100 kN / m, more preferably 60 kN / m to 80 kN / m. If the applied linear pressure is lower than 35 kN / m, the bundle of knitting yarns 9 such as the core-sheath structure yarn 3 and the polyester yarn 7 of the knitted fabric 2 cannot be sufficiently compressed, and the mesh fabric 1 formed. There is a risk that convex parts will remain on the surface. Further, the sheath component 6 may not be fused with the other filament 4 of the core-sheath structure yarn 3 or the filament 8 of the polyester yarn 7, and the filament 4 or the filament 8 may pop out at the end of the mesh fabric 1. Further, if the applied linear pressure is higher than 100 kN / m, the knitting yarn 9 of the knitted fabric 2 is crushed too much, and the shape of the mesh fabric 1 is deformed. For example, the opening of the mesh fabric 1 may be blocked by the over-crushed knitting yarn 9, resulting in poor air permeability.

Further, as described above, in the calendering step S40, the knitted fabric 2 is heated by the heating roll 24 and narrowed by the heating roll 24 and the press roll 25, so that the knitted fabric 2 is heated and pressurized substantially at the same time. .. As a result, the gaps between the knitting yarns 9 used in the mesh fabric 1 and the gaps between the filaments 8 of the polyester yarns 7 can be reduced, and the knitting yarns 9 can be brought into close contact with each other and fused. Therefore, it is possible to prevent the filament 4 of the core-sheath structure yarn 3 and the filament 8 of the polyester yarn 7 from popping out from the end portion of the mesh fabric 1.

Further, as the knitted fabric 2 is heated and pressurized in the calendering step S40, the cross-sectional shape of the knitting yarn 9 changes from a substantially circular shape to a substantially elliptical shape, respectively, and the overlapping portion of the knitting yarn 9 is shown in FIG. As shown in (A), it is formed in a substantially flat shape. As described above, the filament 8 and the like are suppressed from popping out from the end portion, and the bundle of the knitting yarn 9 is formed in a substantially flat shape, so that the mesh fabric 1 is less likely to be caught when it touches the end portion. , The touch near the edge of the mesh fabric 1 is improved.

Further, since the filament 4 or the like constituting the knitting yarn 9 is prevented from penetrating the bias tape or the like covering the end portion of the mesh fabric 1 and protruding to the outside, the defect rate of the product using the mesh fabric 1 is lowered. be able to. Further, it is not necessary to stack two bias tapes or the like as in the prior art, and further, it is possible to eliminate the edge finish by the bias tape or the like and use the end portion of the mesh fabric 1 as the end portion of the product as it is. .. Therefore, the productivity of the product using the mesh fabric 1 can be increased.

Then, as shown in FIG. 4, the mesh fabric 1 formed through the calendering step S40 moves along the press roll 25 and is guided to the tension roll 26. The tension roll 26 is composed of a plurality of rolls arranged in a predetermined positional relationship. The mesh fabric 1 is stretched by passing between a plurality of rolls of the tension roll 26. Further, the tension roll 26 is provided so that the tension of the mesh fabric 1 can be adjusted, for example, the tension roll 26 can be moved in the vertical direction. By moving the tension roll 26, an appropriate tension is applied to the mesh fabric 1. Then, the mesh fabric 1 that has passed through the tension roll 26 is guided to the winder 27.

Next, in the winding step S50, the completed mesh fabric 1 is wound into a roll by the winding machine 27 of the manufacturing apparatus 20. Then, the wound mesh fabric 1 is used as a material for a product such as a waist belt.

FIG. 6 is a plan view of the waist belt 10 as an example of a product using the mesh fabric 1 as a material. As shown in FIG. 6, the waist belt 10 has a back portion 11 fixed to the back side, a side portion 12 fixed to the side side, and an abdomen 13 fixed to the ventral side of the human body.

For the back portion 11, a mesh fabric 1 formed by including a core-sheath structure yarn 3 (see FIG. 1) and a polyester yarn 7 (see FIG. 1) is used. As described above, by using the mesh fabric 1 having a predetermined rigidity for the back portion 11, the body can be suitably supported.

Further, the back portion 11 is formed only of the mesh fabric 1, and another cloth or the like is not attached to the surface of the mesh fabric 1. As a result, the air permeability of the waist belt 10 can be improved, the waist belt 10 can be made thin and lightweight, and the fit of the waist belt 10 can be improved.

Side portions 12 are provided on both the left and right sides of the back portion 11. The side portion 12 is connected to the end portion of the back portion 11 by sewing or the like. The side portion 12 is formed of, for example, an elastic knitted fabric 17 knitted by a power net or the like. Examples of the yarn used for the elastic knitted fabric 17 include polyurethane yarn, natural rubber elastic yarn, nylon filament yarn and the like. The side portion 12 knitted in this way is expandable and contractible in the longitudinal direction of the waist belt 10, which enhances the fit when the waist belt 10 is attached.

An abdomen 13 is provided at each end of the side portion 12 opposite to the back portion 11. For example, a mesh fabric 1 is used for the abdomen 13, and is connected to the end of the side portion 12 by sewing or the like. Further, a hook-and-loop female material 16 having a female face of the hook-and-loop fastener is provided on at least one end side of the abdomen 13, that is, at least one of the front and back surfaces of the abdomen 13a and the abdomen 13b.

For the hook-and-loop fastener female material 16, for example, a core-sheath structure thread 3 having a thickness of 50 dtex to 80 dtex is used. The female surface of the hook-and-loop fastener is formed by knitting a tricot fabric of Atlas knitting with one raised yarn and two ground yarns and raising the raised yarns in a loop shape. Further, the surface side of the hook-and-loop female material 16 on which the loop-shaped brushed material is not formed may be coated with a resin so as not to block the mesh holes of the hook-and-loop female material 16.

Further, at a predetermined position on the other surface of the abdomen 13b or the abdomen 13a, which is on the opposite end side to the abdomen 13a or the abdomen 13b provided with the female surface of the hook-and-loop fastener, on the opposite side of the one surface. , A fabric (not shown) having a male surface of a hook-and-loop fastener is provided. On the male surface of the hook-and-loop fastener, the thread is raised like a hook. The waist belt 10 is fixed in a state where the abdomen 13a and the abdomen 13b are overlapped by the hook-shaped raising of the male surface of the hook-and-loop fastener being caught by the loop-shaped raising of the female surface of the hook-and-loop fastener.

As described above, by using the hook-and-loop fastener for the waist belt 10, the overlapping condition of the abdomen 13a and the abdomen 13b can be adjusted, and the waist belt 10 can be suitably fixed to the body. Further, when the waist belt 10 is removed from the body, the waist belt 10 can be easily removed by peeling off the abdomen 13a and 13b. The male surface of the hook-and-loop fastener may be provided on both of the abdomen 13a and 13b, or may be provided on only one of the abdomen 13a and 13b.

An edge winding portion 14 is formed on the edge portion of the waist belt 10. The rim winding portion 14 is formed by covering the ends of the back portion 11, the side portion 12, and the abdomen 13 with a separate cloth such as bias tape. As a result, the end portion of the entire waist belt 10 can be covered, and the touch of the end portion can be improved. Further, in the mesh fabric 1 used for the back portion 11 and the abdomen 13, the filament 4 of the knitting yarn 9 (see FIG. 1) and the like are difficult to protrude from the end portion of the mesh fabric 1, so that the separate fabric used for the edge winding portion 14 is different. It may be thinner than the conventional product.

FIG. 7 is a plan view of the waist belt 110, which is another example of a product in which the mesh fabric 1 is used. As shown in FIG. 7, the waist belt 110 is integrally formed of elastic knitted fabric 17 that is continuously knitted from one end to the other end of the waist belt 110. The back portion 111 and the abdomen 113 of the waist belt 110 are formed by providing the mesh fabric 1 and the hook-and-loop fastener female material 16 on the elastic knitted fabric 17 knitted in a predetermined shape.

The mesh fabric 1 overlaps the elastic knitted fabric 17 and is fixed to the back portion 111 by sewing or the like. Further, another cloth may be sewn on the left and right ends of the mesh fabric 1 so as to cover the ends. The side portion 112 is formed by the elastic knitted fabric 17. Specifically, no other cloth or the like is sewn on the side portion 112.

The hook-and-loop female material 16 overlaps the elastic knitted fabric 17 and is fixed to the abdomen 113 by sewing or the like. Further, another cloth may be sewn on the end portion of the hook-and-loop female material 16 on the side portion 112 side so as to cover the end portion. Further, the abdomen 113 of the waist belt 110 is provided with a male surface of a hook-and-loop fastener, similarly to the waist belt 10 shown in FIG. Further, an edge winding portion 114 is formed at the peripheral end portion of the waist belt 110 so as to cover the end portion of the waist belt 110.

Further, a support column 115 as a reinforcing member formed in a substantially plate shape from a synthetic resin or the like is attached to the back portion 111. The support column 115 is attached to the mesh fabric 1, and another cloth is sewn on the surface side of the support column 115 so as to cover the support column 115. As a result, the strength of the waist belt 110 is increased.

The waist belts 10 and 110 may be provided with a belt member made of a stretchable knitted fabric, a woven fabric, or the like, for example, a rubber cord or the like. As a result, the waist belts 10 and 110 are fixed to the body by the stretchable belt member in addition to the above-mentioned hook-and-loop fastener. With such a configuration, the tightening force of the waist belts 10 and 110 can be increased.

Further, although it is said that the edge winding portions 14 and 114 are provided at the peripheral ends of the waist belts 10 and 110, the edge winding portions 14 and 114 are not formed at the end portions of the mesh fabric 1 and the edges of the mesh fabric 1 are not formed. The configuration may be such that the part is exposed.

[Example]
Hereinafter, the present invention will be described in more detail with reference to examples. The present invention is not limited to the examples listed below.
Two types of sample P1 and sample P2 were prepared as the mesh dough 1 shown in FIG. 1 by the manufacturing method described with reference to FIG. 3 and the like, and various evaluations were performed.

First, as the preparation step S10, the sample P1a and the sample P2a were knitted as the mesh-like knitted fabric 2 used as the material of the sample P1 and the sample P2, respectively. Both the sample P1a and the sample P2a are warp knitted fabrics, and the knitting method is different.

The knitting yarn 9 used for the sample P1a, which is the material of the sample P1, is two types, a core sheath structure yarn 3 and a polyester yarn 7. The core-sheath structure yarn 3 used in the sample P1a is composed of 16 filaments 4 in which the core component 5 is polyethylene terephthalate and the sheath component 6 is a low melting point polyester resin. That is, the core-sheath structure thread 3 is a 16F (filament) thread. The melting point of the core component 5 is 250 ° C to 270 ° C, and the melting point of the sheath component 6 is 180 ° C. Further, the core-sheath structure thread 3 of the sample P1a has a thickness of 277.8 dtex.

The polyester yarn 7 used in the sample P1a is a regular polyester yarn having a thickness of 48F and a thickness of 277.8 dtex. The melting point of the polyester yarn 7 is 250 ° C to 270 ° C. The ratio of each knitting yarn 9 contained in the sample P1a as a material is 50% by mass for the core-sheath structure yarn 3 and 50% by mass for the polyester yarn 7. The size of the prepared sample P1a is 150 cm in width and 35 m in length. The stitch densities of sample P1a are 18 courses / inch and 19 wales / inch.

The sample P2a, which is the material of the sample P2, is a knitted fabric 2 whose knitting method is different from that of the sample P1a. The type of knitting yarn 9 used for the sample P2a and the mixing ratio thereof are the same as those of the sample P1a. The size of the prepared sample P2a is 125 cm in width and 50 m in length. The stitch densities of sample P2a are 17 courses / inch and 19 wales / inch.

Then, with respect to the sample P1a and the sample P2a, the heat setting step S20 shown in FIG. 3 was executed under the condition of the heating temperature of 170 ° C., and heat setting was performed on each of them. After that, the sample P1a and the sample P2a are set in the manufacturing apparatus 20 shown in FIG. 4, and the stretching step S30, the calendering step S40, and the winding step S50 shown in FIG. 3 are executed, and the sample P1 and the sample P2 of the mesh dough 1 are executed. Was formed. The heating temperature in the calendering step S40 for forming the sample P1 is 150 ° C. The linear pressure of the press roll 25 in the calendering step S40 is 65.3 kN / m. The feed rate of sample P1 is 2.5 m / min.

The heating temperature in the calendering step S40 for forming the sample P2 is 150 ° C., as in the case of the sample P1. The linear pressure in the calendar processing step S40 when forming the sample P2 is 78.4 kN / m. The feeding speed of the sample P2 is 2.5 m / min.

[Comparison example]
As a comparative example, samples P11 and P12 of two types of mesh fabrics having different knitting methods were prepared. The knitted fabric 2 which is the material of the sample P11 is the same as the sample P1a which is the material of the sample P1 according to the above-mentioned example, and the knitted fabric 2 which is the material of the sample P12 is the same as the sample P2 which is the material of the above-mentioned example. It is the same as the sample P2a which is the material.

In the sample P11 and the sample P12 of the mesh fabric as a comparative example, the heat setting process is performed using the hot air heating type heat setting device in the same manner as the mesh fabric of the prior art without performing the calendering step S40. , The core-sheath structure thread 3 was fused. The heating temperature of the samples P11 and P12 in the heat setting process is 170 ° C.

For the sample P1, sample P2, sample P11 and sample P12 produced by the above method, the thickness dimension and the rigidity and softness were measured, and the joining condition, tactile sensation, texture and end condition of the knitting yarn 9 were visually and touched. Etc. were compared and evaluated.

FIG. 8 is a table showing the evaluation results of the samples P1 and P2 of the mesh fabric 1 according to the embodiment of the present invention and the samples P11 and P12 of the mesh fabric according to the comparative example.
As shown in FIG. 8, the thickness of the sample P1 that has undergone the calendering step S40 according to the embodiment of the present invention was about 0.75 mm to 0.90 mm. On the other hand, the thickness of the sample P11 as a comparative example prepared from the sample P1a which is the same material by the heat set of the prior art was about 1.4 mm. As described above, the thickness of the sample P1 according to the example of the present invention was approximately ½ of the thickness of the sample P11 of the comparative example.

The thickness of the sample P2 according to the examples having different knitting methods was about 0.50 mm to 0.55 mm. On the other hand, the thickness of the sample P12 as a comparative example prepared from the sample P2a which is the same material by the heat set of the prior art was about 0.9 mm. As described above, the thickness of the sample P2 according to the example was about ½ of the thickness of the sample P12 of the comparative example.

Further, each of the sample P1 and the sample P2 according to the example that had undergone the calendering step S40 had a smooth main surface and had a good touch. The main surfaces of the sample P11 and the sample P12 of the comparative example had a rough texture, and were significantly different from the sample P1 and the sample P2.
Further, in the sample P11 and the sample P12 of the comparative example, there is a feeling that the sample P11 and the sample P12 are caught when the hand is slid on the end portion of the mesh fabric, but the sample P1 and the sample P2 according to the embodiment of the present invention also have a smooth end portion of the mesh fabric 1. I can't feel any catch.

Further, the cantilever values (rigidity and softness) of the samples P1, P2, P11 and P12 were measured according to the JIS L1096 A method (45 ° cantilever method). The size of the test piece is 25 mm in width and 300 mm in length for sample P1 and P11, and 20 mm in width and 300 mm in length for sample P2 and sample P12. As a result of the measurement, the cantilever value of the sample P1 was 20 cm, and that of the sample P2 was 21 cm. It can be seen that both the sample P11 and the sample P12 have rigidity suitable for applications such as waist belts.

FIG. 9 (A) is a photograph showing a cross section of the sample P1 of the mesh fabric 1 according to the example, and FIG. 9 (B) is a photograph showing a cross section of the sample P11 by the method of the prior art as a comparative example. .. FIG. 10 (A) is a photograph showing a cross section of sample P2 of the mesh fabric 1 according to the example in which the knitting method is changed, and FIG. 10 (B) is a cross section of sample P12 by a method of the prior art as a comparative example. It is a photograph showing. The photographs shown in FIGS. 9 and 10 are taken using a microscope, and the respective photographing magnifications are 50 times.

As shown in FIG. 9A, in the sample P1 formed by heating and compressing in the calendering step S40, the bundle of knitting yarns 9 constituting the mesh fabric 1 is crushed in the thickness direction of the mesh fabric 1. I understand. On the other hand, in the sample P11 of the comparative example shown in FIG. 9B, the bundle of the knitting yarns 9 is formed in a substantially circular cross section and is not crushed. Further, in the sample P11 of the comparative example, it can be seen that the filament 4 of the core-sheath structure yarn 3 and the filament 8 of the polyester yarn 7 are protruding, but in the sample P1 shown in FIG. 9 (A), the filament 4 and the filament 8 The pop-out is small.

As shown in FIGS. 10A and 10B, the same evaluation results as above were obtained for the sample P2 of the example and the sample P12 of the comparative example evaluated by changing the knitting method. That is, as is clear from FIG. 10A, in the sample P2 according to the example, the portion where the knitting yarns 9 overlap is crushed in the thickness direction of the mesh fabric 1 to form a substantially flat shape, and the filament 4 And the filament 8 hardly pops out. On the other hand, in the sample P12 according to the comparative example shown in FIG. 10B, the knitting yarn 9 is not crushed, the interval between the filaments 4 or the interval between the filaments 8 is wide, and the filament 4 and the filament 8 also pop out. large.

FIG. 11A is a table showing an example of the results of measuring the friction coefficient of the samples P1 and P2 of the mesh fabric 1 according to the embodiment of the present invention and the samples P11 and P12 of the mesh fabric according to the comparative example. 11 (B) is a table showing an example of the results of measuring the surface roughness of the samples P1, P2, P11, and P12.

The friction coefficient and surface roughness of the samples P1, sample P2, sample P11 and sample P12 prepared as described above were measured using a "KES-FB4-A surface tester" manufactured by Kato Tech Co., Ltd. The measurement is performed in the vertical direction and the horizontal direction of the front surface of each sample, and in the vertical direction and the horizontal direction of the back surface, respectively.

As shown in FIG. 11 (A), as a result of the measurement, the friction coefficient of the sample P1 according to the embodiment of the present invention is 0.118 in the vertical direction of the front surface, 0.127 in the horizontal direction of the front surface, and the vertical direction of the back surface. Was 0.115, and the horizontal direction of the back surface was 0.186. The coefficient of friction of sample P2 was 0.117 in the vertical direction of the front surface, 0.166 in the horizontal direction of the front surface, 0.148 in the vertical direction of the back surface, and 0.162 in the horizontal direction of the back surface.

On the other hand, the coefficient of friction of sample P11, which is a comparative example, is 0.147 in the vertical direction of the front surface, 0.284 in the horizontal direction of the front surface, 0.141 in the vertical direction of the back surface, and 0 in the horizontal direction of the back surface. It was 176. The coefficient of friction of sample P12 was 0.148 in the vertical direction of the front surface, 0.178 in the horizontal direction of the front surface, 0.144 in the vertical direction of the back surface, and 0.215 in the horizontal direction of the back surface.

Further, as shown in FIG. 11B, the surface roughness of the sample P1 according to the embodiment of the present invention is 4.12 μm in the vertical direction of the front surface, 7.88 μm in the horizontal direction of the front surface, and 7.88 μm in the vertical direction of the back surface. It was 8.79 μm, and the horizontal direction of the back surface was 11.47 μm. Regarding the surface roughness of the sample P2, the vertical direction of the front surface was 3.42 μm, the horizontal direction of the front surface was 13.18 μm, the vertical direction of the back surface was 7.95 μm, and the horizontal direction of the back surface was 5.32 μm.

On the other hand, the surface roughness of the sample P11 of the comparative example is 5.16 μm in the vertical direction of the front surface, 20 μm or more in the horizontal direction of the front surface, 20 μm or more in the vertical direction of the back surface, and 12.09 μm in the horizontal direction of the back surface. there were. The surface roughness of the sample P12 was 7.95 μm in the vertical direction of the front surface, 20 μm or more in the horizontal direction of the front surface, 10.48 μm in the vertical direction of the back surface, and 11.59 μm in the horizontal direction of the back surface.

Based on the above measurement results, the samples P1 and P2 formed by heating and compressing in the calendar processing step S40 are subjected to the heat setting process using the hot air heating type heat setting device, and then the calendar processing step S40 is executed. The coefficient of friction and surface roughness are smaller than those of the unprepared samples P11 and P12. As a result, it was shown that the main surface of the mesh fabric 1 became smooth and had a good touch by performing the calendering step S40.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

1 Waist belt mesh fabric 2 Knitted fabric 3 Core sheath structure yarn 4 Filament 5 Core component 6 Sheath component 7 Polyester yarn 8 Filament 9 Knitting yarn 10, 110 Waist belt 11, 111 Back part 12, 112 Side part 13, 113 Abdomen 14, 114 Edge winding part 16-sided fastener female material 17 Elastic knitted fabric 20 Manufacturing equipment 21 Basket 22 Tension roll 23 Guide roll 24 Heating roll 25 Press roll 26 Tension roll 27 Winding machine 30 Knitting machine 31 Guide hole 115 Strut

Claims (7)

A mesh fabric for a waist belt containing a multifilament knitting yarn in which the core component is covered with a sheath component and the melting point of the sheath component is lower than the melting point of the core component.
It has a knitting structure in which a plurality of the knitting yarns are aligned and accompany the knitting yarn.
In the overlapping portion of the plurality of knitting yarns of the knitting structure, the sheath components of the knitting yarns that are in contact with each other are fused to each other, and in the bundle of the overlapping knitting yarns, the plurality of the filaments are the waist belt. A waist belt mesh fabric characterized in that it is crushed in the thickness direction of the waist belt mesh fabric so as to spread more in the direction along the surface of the waist belt mesh fabric. The core component is formed of a polyester resin having a melting point of 230 ° C to 270 ° C.
The mesh fabric for a waist belt according to claim 1, wherein the sheath component is formed of a polyester resin having a melting point of 130 ° C. to 190 ° C. The thickness of the knitting yarn is 200 dtex to 350 dtex.
The waist belt mesh fabric according to claim 1 or 2, wherein the thickness of the waist belt mesh fabric is 0.5 mm to 1.0 mm. A step of knitting a mesh-like knitted fabric containing a multifilament core-sheath structural yarn formed by a plurality of filaments in which the core component is covered with a sheath component and the melting point of the sheath component is lower than the melting point of the core component.
Anda calendering step heating and pressing is passed between a pair of calender rolls the knitted fabric,
In the step of knitting the knitted fabric, the knitted fabric is knitted by aligning a plurality of the core-sheath structure yarns.
In the calendering step, the plurality of accompanying core-sheath structure yarns are crushed in the thickness direction of the knitted fabric so that the plurality of filaments spread in a large amount in the direction along the surface of the knitted fabric. Manufacturing method of mesh fabric for waist belt. The method for producing a mesh fabric for a waist belt according to claim 4, wherein a linear pressure of 35 kN / m to 100 N / m is applied to the knitted fabric in the calendering step. The core component is formed of a polyester resin having a melting point of 230 ° C to 270 ° C.
The sheath component is formed of a polyester resin having a melting point of 130 ° C. to 190 ° C.
The waist belt mesh fabric according to claim 4 or 5, wherein in the calendar processing step, the knitted fabric is heated by the calendar roll heated to a temperature of 130 ° C. to 220 ° C. Production method. The knitted fabric comprises a regular yarn formed by a plurality of filaments made of a single material having a melting point higher than that of the sheath component.
The step according to any one of claims 4 to 6, wherein in the step of knitting the knitted fabric, the knitted fabric is knitted by aligning the core-sheath structure yarn and the regular yarn. Manufacturing method of mesh fabric for waist belt.