TW202436722A - Material - Google Patents

Abstract

The invention provides a material that is easy to produce, lightweight, and has excellent anti-slip properties in the areas to which it is applied. The material has a first surface and a second surface opposite to the first surface, is made of warp-knitted fabric in which a plurality of polyurethane yarns are arranged in the same course, and has a basis weight of 100 g/m ²or less, wherein the proportion of polyurethane yarns exposed on the first surface (R1) is greater than the proportion of polyurethane yarns exposed on the second surface (R2).

Description

Material

The present invention relates to materials. More specifically, the present invention relates to materials that are easy to produce, lightweight, and have excellent anti-slip properties relative to the application location.

Previously, materials with excellent anti-slip properties relative to the application location have been developed in bedding such as mattresses, daily necessities such as bathroom towel mats, other clothing fields such as health clothing and sports clothing, and medical fields (for example, Patent Document 1). Patent Document 1 discloses: In the clothing field, an elastic warp yarn knitted fabric that is easy to wear, can fix the joints, and has the stretchability to follow the movement of the skin. [Prior technical document] [Patent document 1]

Patent document 1: Japanese Patent Publication No. 2013-119671

However, the elastic warp yarn knitted fabric described in Patent Document 1 is a warp yarn knitted fabric made using three reeds, and has a heavy basis weight. Furthermore, when the basis weight of the elastic warp yarn knitted fabric described in Patent Document 1 is reduced by reducing the number of reeds, the static friction coefficient is reduced, and it becomes easy to slide relative to the application position. In order to make the warp yarn knitted fabric lighter, it can be considered to use a lighter yarn (for example, polyurethane yarn) instead of polyester yarn. However, the fabric base composed of polyurethane yarn has high viscosity and poor step permeability, so it is difficult to produce due to the mixing ratio of polyurethane yarn.

The present invention is made in view of the above-mentioned prior art and aims to provide a material which is easy to produce, lightweight and has excellent anti-slip properties relative to the application location.

As a result of careful examination, the inventors of the present invention have found that the above-mentioned problem can be solved by configuring a plurality of polyurethane yarns on the same course in a warp yarn knitted fabric including polyurethane yarns, and configuring the ratio of the polyurethane yarn exposed on the first surface in contact with the application position to be greater than the ratio of the polyurethane yarn exposed on the second surface opposite to the first surface, thereby completing the present invention.

The material of the present invention for solving the above-mentioned problem is a material having a first surface and a second surface on the opposite side of the first surface, wherein the material is composed of a warp-knitted fabric in which a plurality of polyurethane yarns are arranged on the same latitude and has a basis weight of less than 100 g/ ^m2 , and the ratio (R1) of the polyurethane yarn exposed on the first surface is greater than the ratio (R2) of the polyurethane yarn exposed on the second surface.

<Material> A material according to one embodiment of the present invention has a first surface and a second surface opposite to the first surface. The material is composed of a warp yarn knitted fabric in which a plurality of polyurethane yarns are arranged on the same weft. The material has a basis weight of 100 g/ ^m2 or less. The ratio (R1) of the polyurethane yarn exposed on the first surface is greater than the ratio (R2) of the polyurethane yarn exposed on the second surface. The following will explain each of them.

FIG. 1 is a plane photograph of the material of the present embodiment taken from the first side. FIG. 2 is a plane photograph of the material of the present embodiment taken from the second side. In addition, in FIG. 1 and FIG. 2, for the convenience of explanation, the polyurethane yarn is painted black. FIG. 3 is a schematic appearance diagram for explaining the appearance of arranging a plurality of polyurethane yarns on the same latitude. The material 1 of FIG. 1 to FIG. 3 is composed of a polyurethane yarn 2 and a polyester yarn 3.

As shown in FIG. 1 and FIG. 2 , in the material 1 of the present embodiment, the polyurethane yarn 2 is exposed from the first surface S1 and the second surface S2. The ratio (R1) of the polyurethane yarn 2 exposed on the first surface S1 is greater than the ratio (R2) of the polyurethane yarn 2 exposed on the second surface S2. Thus, the material 1 of the present embodiment is configured so that the ratio (R1) of the polyurethane yarn 2 exposed on the first surface S1 is greater than the ratio (R2) of the polyurethane yarn 2 exposed on the second surface S2, and when the first surface S1 is in contact with the application position for use, the polyurethane yarn 2 easily contacts the application position, and has excellent anti-slip properties. FIG3 is a schematic external view for explaining the configuration of the polyester yarn F and the polyurethane yarn B on the same latitude. Element symbol 4 indicates the overlapped portion of the polyurethane yarn B. By performing such weaving, the polyurethane yarns overlap each other to show a concave-convex feeling, thereby further improving the anti-slip property.

In addition, in the present embodiment, the ratio of the polyurethane yarn exposed on the first surface and the second surface can be calculated by the following method. The ratio can be calculated by using the automatic area ratio calculation function of an electron microscope on the front and back surfaces of the fabric base, or a photo of the fabric base taken at the magnification is printed on paper, and only the portion is cut out and the weight is measured to calculate the ratio from the weight ratio. By at least one of the methods, the ratio (R1) of the polyurethane yarn exposed on the first surface and the ratio (R2) of the polyurethane yarn exposed on the second surface can be calculated and compared.

Furthermore, in the present embodiment, the "application location" used in the manner of contacting the first surface of the material is not particularly limited. The application location can be appropriately selected according to the purpose of the material. For example, when the material is a mat, the application location is a mattress, a quilt, etc. Furthermore, when the material is a bathroom step mat, the application location is the floor of the bathroom, etc. When the material is a table mat, the application location is a table, etc. When the material is a support belt, the application location is the upper wrist of a person, etc. When the material is a purse, the application location is the shoulder strap of the purse, etc. When the material is a chair, the application location is the seat surface, etc. When the material is a shoe, the application location is an insole, etc. In addition, the material can be an anti-slip belt provided on the inner middle part of the underwear. At this time, the application position is a shirt or other tops and underwear. For socks, local configuration on the inner side helps prevent displacement. In this way, the material of this embodiment can be used as a variety of materials that require anti-slip properties. In this way, the material can exert excellent anti-slip properties according to the application position corresponding to each use.

The mixing ratio of the polyurethane yarn of the material of this embodiment is preferably 30% by mass or more, more preferably 20% by mass or more, relative to the above-mentioned material. Furthermore, the mixing ratio of the polyurethane yarn is preferably 50% by mass or less, more preferably 40% by mass or less, relative to the above-mentioned material. By making the mixing ratio of the polyurethane yarn within the above-mentioned range, the material is formed using the material according to this mixing ratio, and the ratio (R1) of the polyurethane yarn on the first surface is greater than the ratio (R2) of the polyurethane yarn on the second surface, thereby making it easy to adjust the amount of polyurethane yarn exposed on the first surface to be above a certain level. As a result, the material is easy to exhibit excellent anti-slip properties when the first surface is brought into contact with the application position. Furthermore, by setting the polyurethane yarn to the above-mentioned mixing ratio range, the basis weight of the material can be easily reduced. As a result, the obtained material is lightweight. Furthermore, by setting the polyurethane yarn to the above-mentioned mixing ratio range, the material can easily suppress the mixing ratio of the polyurethane yarn in terms of exerting the above-mentioned anti-slip property, which can improve the process throughput and facilitate production.

The total fiber density of the polyurethane yarn is not particularly limited. For example, the total fiber density of the polyurethane yarn is preferably 70 dtex or less, and more preferably 55 dtex or less. When the total fiber density of the polyurethane yarn is within the above range, the material will not become excessively heavy as a fabric base, the amount of polyurethane will be appropriate, and the anti-slip property will be good. The lower limit of the total fiber density of the polyurethane yarn is not particularly limited. For example, the lower limit of the total fiber density is preferably 20 dtex or more, and more preferably 30 dtex or more. When the total fiber density of the polyurethane yarn is within the above range, the contact area of the material polyurethane yarn increases, and the anti-slip property becomes good.

In addition, the fibers of other yarns constituting the material of the present embodiment are not particularly limited. For example, the fibers constituting other yarns are cellulose fibers such as polyester fibers, polyamide fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, acetate fibers, viscose fibers/rayon, and copper-ammonia rayon; plant-derived natural fibers such as cotton and linen; and animal-derived natural fibers such as wool, cashmere wool, and silk. Among these, the fibers constituting the other yarns are preferably polyester fibers, preferably aromatic polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc., and aliphatic polyester fibers such as polylactic acid, polyglyceric acid, etc.

The total fiber density of other yarns is not particularly limited. For example, the total fiber density of other yarns is preferably 110 dtex or less, and more preferably 84 dtex or less. Furthermore, the total fiber density of other yarns is preferably 56 dtex or more, and more preferably 33 dtex or more. By keeping the total fiber density of other yarns within the above range, the basis weight of the material fabric base will not become excessively heavy, the mixing ratio of polyurethane will increase, and it will be maintained in a relatively light state, while having excellent anti-slip properties.

The number of other yarns is not particularly limited. For example, the number of other yarns is preferably 24 or more, and more preferably 18 or more. Furthermore, the number of other yarns is preferably 48 or less, and more preferably 36 or less. When the number of other yarns is within the above range, the material becomes excessively soft, and can maintain a moderate sense of expansion while maintaining lightness.

The shape of the yarn constituting the other yarn is not particularly limited. For example, the shape of the other yarn may be FDY (Full Drawn Yarn) or DTY (Drawn Textured Yarn).

Returning to the overall description of the material of this embodiment, the basis weight of the material is 100 g/ ^m2 or less, preferably 90 g/m2 ^or less, and more preferably 80 g/m2 ^or less. Furthermore, the basis weight of the material is preferably 60 g/ ^m2 or more, and more preferably 50 g/ ^m2 or more. In the case where the basis weight of the material exceeds 100 g/ ^m2 , the material is heavy and difficult to handle. Furthermore, by keeping the basis weight of the material within the above range, the material maintains sufficient anti-slip properties and is lightweight. In addition, in this embodiment, the basis weight can be measured according to JIS L 1096 8.3.2 A method (2010).

The material of this embodiment is composed of a warp yarn knitted fabric in which a plurality of polyurethane yarns are arranged on the same latitude. That is, as shown in FIG. 1 and FIG. 3 , the polyurethane yarn exposed on the first surface is a plurality of polyurethane yarns overlapped on the same latitude. As a result, the polyurethane yarn in the overlapping portion swells and is easily exposed to the outside. As a result, when the material is used in a manner in which the first surface contacts the application position, the polyurethane yarn easily contacts the application position. As a result, according to the viscosity of the polyurethane yarn, the material can exhibit excellent anti-slip properties.

The weaving method (weaving structure) used to form such a warp yarn knitted fabric is not particularly limited. The weaving structure may be a weaving structure in which a plurality of polyurethane yarns are arranged on the same weft, as long as the ratio (R1) of the polyurethane yarn exposed on the first side is greater than the ratio (R2) of the polyurethane yarn exposed on the second side. For example, the weaving structure is a denbigh stitch, a half-woven structure, an atlas stitch, a satin structure, a queen’s cord, a double-sided denbigh stitch, a back half-woven structure, a double-sided half-woven structure, and the like. Among them, the woven structure of the material of the present embodiment is preferably a winding ribbed structure. Thus, the material can be easily configured so that a plurality of polyurethane yarns are arranged on the same latitude, and the ratio (R1) of the polyurethane yarn exposed on the first surface is greater than the ratio (R2) of the polyurethane yarn exposed on the second surface. As a result, the material suppresses the mixing ratio of polyurethane and easily exhibits excellent anti-slip properties. Furthermore, by using the winding ribbed structure as the woven structure, the material can be manufactured using two reeds. Thus, the material has a smaller basis weight and is easy to manufacture, and is easy to make lightweight. In addition, the so-called wavy weave is a weave that can be woven using two reeds, and can be produced by using the front reed to perform lock weaving and the back reed to weave the plain base weave. Therefore, the wavy weave can be used as a weaving weave, and the material obtained thereby is a material in which more polyurethane yarn is exposed on the other side (the second side) where the lock weaving is performed than on the one side (the second side) where the plain base weave is woven.

The weaving machine used to make the above-mentioned woven structure is not particularly limited. For example, the weaving machine is a warp knitting machine and a Raschel machine, a double-face warp knitting machine, a double-face Raschel machine, etc.

In addition, in the present embodiment, "arranged on the same weft" means that the raw material yarn is arranged so that there is only one knitting needle used in knitting. In this case, even if it is the same weft, the case where the polyurethane yarn is arranged across two or more wefts is also included in the "material having a plurality of polyurethane yarns arranged on the same weft" in the present embodiment. If it is the same weft, the polyurethane yarn may be arranged across several wefts, but it is preferred because the ground contact area increases if it is not arranged across several wefts.

The obtained material is used in a manner in which the first surface is in contact with the application position. Thereby, the material can exhibit excellent anti-slip properties. Specifically, the static friction coefficient of the first surface of the material of this embodiment relative to the horizontal direction (that is, the direction orthogonal to the latitude (warp direction)) is preferably 1.0 or more, and more preferably 1.1 or more. In addition, in this embodiment, the static friction coefficient can be measured according to the horizontal method of JIS P 8147 (2010), the test size is 90mm×60mm, the weight is 1kg, the target cloth is cotton cloth (canequim No. 3), and the state is dry. In this embodiment, if the static friction coefficient is 1.00 or more, the anti-slip property can be said to be excellent.

Furthermore, the material of the present embodiment is unlikely to experience a decrease in anti-slip properties over time. Specifically, when the material is subjected to a wear test on the first surface, the static friction coefficient (C1) of the first surface relative to the transverse direction before the wear test and the static friction coefficient (C2) of the first surface relative to the transverse direction after the wear test are preferably both 1.00 or more, more preferably 1.05 or more. Furthermore, the ratio (C2/C1) of the static friction coefficient (C1) to the static friction coefficient (C2) is preferably 0.90 or more, more preferably 0.95 or more, and further preferably 1.00 or more. In addition, in the present embodiment, the wear test was performed using a friction tester type II described in JIS L 8049 (2013) under the conditions of a load of 2N and a friction number of 500 times.

In particular, the material of this embodiment has a larger static friction coefficient (C2) after the wear test than the static friction coefficient (C1) before the wear test. That is, the ratio (C2/C1) can be 0.90 or more. This is considered to be because the polyurethane yarn is exposed on the first surface, so when the first surface is brought into contact with the application position during the wear test, the surface shape of the polyurethane exposed on the first surface collapses in some places, and the contact area of the polyurethane yarn in contact with the application position increases. Thus, the material of this embodiment is configured to expose more polyurethane yarn on the first surface, so that the excellent anti-slip property can be maintained after the abrasion test, and can also exert an even better anti-slip property than before the abrasion test depending on the situation. Therefore, the material is suitable for long-term repeated use.

Furthermore, the material of this embodiment is unlikely to experience a decrease in anti-slip properties over time even when subjected to repeated washing treatments. Specifically, when the material is subjected to 10 washing treatments, the ratio (C4/C3) of the static friction coefficient (C3) relative to the transverse direction on the first surface before washing treatment to the static friction coefficient (C4) relative to the transverse direction on the first surface after washing treatment is preferably 0.90 or more, more preferably 1.00 or more. In addition, in this embodiment, the washing treatment can be carried out under the condition of drying 10 times according to JIS L 1930 (2014) C4M method.

In particular, the material of the present embodiment has a larger static friction coefficient (C4) after washing treatment than the static friction coefficient (C3) before washing treatment. That is, the ratio (C4/C3) can be changed to 0.90 or more. Moreover, the ratio (C4/C3) is preferably 1.00 or more. This is considered to be because the polyurethane yarn is exposed on the first surface, so when the washing treatment is applied, the surface shape of the polyurethane exposed on the first surface collapses in a certain number of places, and the contact area of the polyurethane yarn in contact with the application position increases. Thus, the material of this embodiment is configured to expose more polyurethane yarn on the first surface, so that the excellent anti-slip property can be maintained even after washing, and can also exert an even better anti-slip property than before washing. Therefore, this material is suitable for long-term repeated use.

The above is a description of one embodiment of the present invention. The present invention is not particularly limited to the above embodiment. In addition, the above embodiment mainly describes the invention having the following structure.

(1) A material comprising a first surface and a second surface opposite to the first surface, the material being composed of a warp yarn knitted fabric in which a plurality of polyurethane yarns are arranged on the same latitude, the basis weight being less than 100 g/ ^m2 , and the ratio (R1) of the polyurethane yarn exposed on the first surface being greater than the ratio (R2) of the polyurethane yarn exposed on the second surface.

According to this structure, the basis weight of the material is less than 100 g/ ^m2 , which is lightweight. In addition, the material is lightweight while being structured so that the ratio (R1) of the polyurethane yarn exposed on the first surface is greater than the ratio (R2) of the polyurethane yarn exposed on the second surface, thereby making the anti-slip property relative to the application position excellent. Furthermore, when the material exerts the above-mentioned anti-slip property, it is easy to suppress the mixing ratio of the polyurethane yarn, which can improve the step passability and facilitate production.

(2) The material as described in (1), wherein the mixing ratio of the polyurethane yarn is 30 mass % or more relative to the material.

According to this structure, the material is lightweight and can exhibit excellent anti-slip properties, thereby providing excellent step passability.

(3) The material as described in (1) or (2), wherein the texture of the warp yarn knitted fabric is a wavy texture.

According to this structure, the material can be easily configured so that the ratio (R1) of the polyurethane yarn exposed on the first surface is greater than the ratio (R2) of the polyurethane yarn exposed on the second surface. As a result, the material can easily exhibit excellent anti-slip properties while suppressing the mixing ratio of polyurethane.

(4) The material as described in any one of (1) to (3), wherein the static friction coefficient of the first surface relative to the transverse direction is 1.00 or more.

With this structure, the material has better anti-slip properties relative to the application location.

(5) A material as described in any one of items (1) to (4), wherein, when the abrasion test is performed on the aforementioned first surface, the static friction coefficient (C1) of the aforementioned first surface relative to the transverse direction before the abrasion test and the static friction coefficient (C2) of the aforementioned first surface relative to the transverse direction after the abrasion test are both greater than 1.00, and the ratio (C2/C1) of the aforementioned static friction coefficient (C1) to the aforementioned static friction coefficient (C2) is greater than 0.90.

With this structure, the material has better anti-slip properties relative to the application location, and it is difficult for the anti-slip properties to decrease over time.

(6) A material as described in any one of items (1) to (5), wherein, after 10 washing treatments, the ratio (C4/C3) of the static friction coefficient (C3) of the first surface relative to the transverse direction before the washing treatment to the static friction coefficient (C4) of the first surface relative to the transverse direction after the washing treatment is greater than 0.90.

If this structure is used, the material has better anti-slip properties relative to the application location, and it is difficult for the anti-slip properties to decrease over time. [Example]

The present invention is described in more detail below by way of examples. The present invention is not limited to the examples. In addition, unless otherwise specified, "%" means "% by mass" and "parts" means "parts by mass".

In the following examples and comparative examples, various evaluations of the respective materials were carried out in the following manner. (1) Total fiber content The positive fiber content was measured by the method shown in JIS L 1013 (2010) 8.3.1 B method and set as the total fiber content. (2) Number of fibers Calculated according to the method of JIS L 1013 (1999) 8.4. (3) Basis weight The basis weight was measured according to JIS L 1096 8.3.2 A method (2010). (4) Exposure ratio of polyurethane A photo of the fabric base taken with an electron microscope at the corresponding magnification was printed on paper, and only the portion was cut out and the weight was measured, and the weight ratio was calculated. The ratio of polyurethane yarn exposed on the first surface (R1) and the ratio of polyurethane yarn exposed on the second surface (R2) were calculated and compared. (5) Static friction coefficient The static friction coefficient was measured according to the horizontal method of JIS P 8147 (2010), test size 90mm×60mm, weight 1kg, target fabric is cotton fabric (canequim No. 3), and dry state. In addition, if the static friction coefficient is 1.0 or more, it is judged that the anti-slip property is excellent. (6) Abrasion test The abrasion test was carried out using the friction tester type II described in JIS L 8049 (2013) under the conditions of load 2N and friction number 500 times. (7) Washing treatment The washing treatment is carried out according to the JIS L 1930 (2014) C4M method and the drying condition is 10 times.

<Example 1> Polyester yarn (total fiber density 56T, filament number 18f, blending ratio 60%) and polyurethane yarn (total fiber density 55T, blending ratio 40%) were used, and a two-reed warp knitting machine was used to weave a fabric base composed of a warp knitted fabric (winding kudzu weave). After that, according to the known method, after refining using a continuous machine, a needle-bar tentering machine was used at a chamber temperature of 190°C to perform finishing processing to produce a material. The basis weight of the obtained material was 66g/ ^m2 .

<Examples 2-3> The materials were prepared by the same method as Example 1 except that the conditions were changed to those listed in Table 1.

<Comparative Example 1> Polyester yarn (total fiber count 84T) was used to make warp beams using a warp setting machine, and woven in a water jet chamber to make a fabric base. After that, the fabric base was finished using a needle-bar tenter at a chamber temperature of 190°C according to a known method to make a fabric (plain weave), and polyurethane resin was dot-printed on the product surface. The basis weight of the obtained material was 100g/ ^m2 .

<Comparative Example 2> Polyester yarn (total fiber count 56T) was used to knit a fabric base composed of warp yarn knitted fabric (warp plain weave) using a Tricot warp knitting machine. After that, the fabric was refined using a continuous knitting machine according to a known method, and then finished using a needle-bar tentering machine at a chamber temperature of 190°C to produce a material. The basis weight of the obtained material was 80g/ ^m2 .

<Comparative Example 3> Polyester yarn (total fiber density 84T, mixing ratio 90%) and polyurethane yarn (total fiber density 22T, mixing ratio 10%) were used to weave a fabric base composed of circular woven fabric (plain woven) using a single-sided circular weaving machine. After that, according to the known method, after being refined using a continuous machine, a finishing process was performed using a needle-bar tenter at a chamber temperature of 190°C to produce a material. The basis weight of the obtained material was 140g/ ^m2 .

<Comparative Example 4> Polyester yarn (total fiber density 33T, yarn count 36f, blending ratio 80%) and polyurethane yarn (total fiber density 33T, blending ratio 200%) were used to weave a fabric base composed of warp yarn knitted fabric (double-sided warp plain weave) using a 3-reed warp knitting machine. After that, according to the known method, after the continuous machine was used for manufacturing, the finishing process was carried out by a pin-bar tentering machine at a chamber temperature of 190°C to manufacture the material. The basis weight of the obtained material was 190g/ ^m2 .

For the materials obtained in the above-mentioned examples and comparative examples, the static friction coefficient, the static friction coefficient before and after the wear test, and the static friction coefficient before and after the washing treatment were measured according to the above-mentioned evaluation method. The results are shown in Table 1.

[Table 1] Embodiment 1 Embodiment 2 Embodiment 3 Comparison Example 1 Comparison Example 2 Comparison Example 3 Comparison Example 4 The yarn used Polyester 56T-18f Polyurethane 55T Polyester 56T-24f Polyurethane 44T Polyester 84T-24f Polyurethane 55T Polyester 84T Polyester 56T Polyester 84T Polyurethane 22T Polyester 33T-36f Polyurethane 33T Fabric type Warp knitted fabrics Warp knitted fabrics Warp knitted fabrics Fabric Warp knitted fabrics Circular Knitting Warp knitted fabrics Fabric structure Curled kudzu texture Curled kudzu texture Curled kudzu texture Plain weave ※Polyurethane resin is dot-printed on the product surface Economic and Peace Organization Plain weave Double-sided warp flat weave Fabric Mixing Ratio Polyester 60% Polyurethane 40% Polyester 70% Polyurethane 30% Polyester 70% Polyurethane 30% Polyester 100% Polyester 100% Polyester 90% Polyurethane 10% Polyester 80% Polyurethane 20% Number of reeds used 2 2 2 1 2 - 3 Polyurethane exposure ratio (higher exposed side) R1 (1st side) R2 (2nd side) R1 R1 R1 Not exposed Not exposed R1 R2 Fabric basis weight 66 60 95 100 80 140 190 Static friction coefficient Product use surface (R1): C1, C3 1.24 1.10 1.26 0.92 0.80 0.82 0.88 Opposite side (R2) 1.01 0.98 1.03 0.60 0.81 0.78 0.88 Static friction coefficient after friction ※ Fabric horizontal direction Product use surface (R1): C2 1.25 1.31 1.27 0.80 0.82 0.81 0.91 Opposite side (R2) 1.02 1.02 1.02 0.61 0.81 0.79 0.91 Friction coefficient after washing ※10 times washing, horizontal direction of fabric Product use surface (R1): C4 1.32 1.37 1.37 0.70 0.82 0.84 0.92 Opposite side (R2) 1.12 1.10 1.10 0.60 0.81 0.79 0.92 C2/C1 1.01 1.19 1.01 0.87 1.03 0.99 1.03 C4/C3 1.06 1.25 1.09 0.76 1.03 1.02 1.05

As shown in Table 1, the materials of Examples 1 to 3 of the present invention have excellent step-through properties, are easy to produce, and have a basis weight of less than 100 g/m ² , which is lightweight. In addition, the static friction coefficient of the first surface of the materials of Examples 1 to 3 that contacts the application position is large, showing excellent anti-slip properties. Furthermore, the static friction coefficient of the materials of Examples 1 to 3 does not decrease after abrasion tests and washing treatments, and can maintain excellent anti-slip properties.

1: Material 2: Polyurethane yarn 3: Polyester yarn 4: Polyurethane yarn overlap B: Polyurethane yarn F: Polyester yarn S1: 1st side S2: 2nd side

FIG. 1 is a plane photograph of a material in one embodiment of the present invention taken from the first side. FIG. 2 is a plane photograph of a material in one embodiment of the present invention taken from the second side. FIG. 3 is a schematic external view for explaining the state in which the polyester yarn and the polyurethane yarn are arranged on the same latitude.

1: Materials

2: Polyurethane yarn

3: Polyester yarn

S1: Page 1

Claims (6)

A material having a first surface and a second surface opposite to the first surface, the material being composed of a warp-knitted fabric in which a plurality of polyurethane yarns are arranged on the same course, the basis weight being ^less than 100 g/m2, and the proportion (R1) of the polyurethane yarn exposed on the first surface being greater than the proportion (R2) of the polyurethane yarn exposed on the second surface. The material of claim 1, wherein the mixing ratio of the polyurethane yarn relative to the material is 30 mass % or more. The material of claim 1 or 2, wherein the weave of the warp yarn knitted fabric is a Queen’s cord weave. The material of claim 1 or 2, wherein the static friction coefficient of the first surface relative to the transverse direction is greater than 1.00. For materials as claimed in claim 1 or 2, when the abrasion test is performed on the first surface, the coefficient of static friction (C1) of the first surface relative to the transverse direction before the abrasion test and the coefficient of static friction (C2) of the first surface relative to the transverse direction after the abrasion test are both greater than 1.00, and the ratio (C2/C1) of the coefficient of static friction (C1) to the coefficient of static friction (C2) is greater than 0.90. For example, in the material of claim 1 or 2, when the washing treatment is performed 10 times, the ratio (C4/C3) of the static friction coefficient (C3) of the first surface relative to the transverse direction before the washing treatment to the static friction coefficient (C4) of the first surface relative to the transverse direction after the washing treatment is greater than 0.90.