CN115363289A

CN115363289A - Clothes for lower limbs

Info

Publication number: CN115363289A
Application number: CN202210305536.9A
Authority: CN
Inventors: 王子裕基; 根上麻耶; 渡边恒阳
Original assignee: PIP Co Ltd
Current assignee: PIP Co Ltd
Priority date: 2021-05-21
Filing date: 2022-03-25
Publication date: 2022-11-22
Also published as: JP2022179188A

Abstract

The present invention relates to a garment for lower limbs. The purpose is to provide a lower limb garment designed to be worn under a staged pressure with smooth skin touch. The lower limb garment is characterized by comprising leg portions, wherein the leg portions are designed such that the wearing pressure is gradually reduced in the order of ankle portions, calf portions and thigh portions, the leg portions have a plated knitting structure formed by grouping a face yarn (5) and a ground yarn (6), the face yarn (5) comprises a nylon yarn, and the ground yarn (6) comprises a covering yarn formed by covering a polyurethane yarn with a nylon yarn.

Description

Clothes for lower limbs

Technical Field

The present invention relates to a garment for lower limbs.

Background

Conventionally, there has been used a lower limb garment designed to be worn at a pressure stepwise so that the pressure of the garment on the skin gradually decreases from the bottom to the top in the order of ankle, calf, and thigh, and to press muscles to cause blood to flow upward and reduce fatigue and edema of the lower limb (for example, patent document 1).

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2011-115571

Disclosure of Invention

Problems to be solved by the invention

In general, in the lower limb clothes that are designed to be worn with pressure in stages, the knitted fabric becomes hard and the feeling of the skin is poor, because the pressure is designed to be worn in stages, not only the lower limb clothes disclosed in patent document 1. In particular, in the case of the lower limb garment of patent document 1, the polyurethane yarn having a large frictional resistance is used as an insert yarn to form a knitted fabric for a roving yarn in which the polyurethane yarn is covered with a nylon yarn, and therefore the texture is poor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lower limb garment designed to be worn with pressure in stages with smooth texture.

Means for solving the problems

The leg garment of the present invention is characterized by comprising a leg portion designed to have a plating knitting structure composed of a face yarn and a ground yarn in this order, the face yarn comprising nylon yarn, and the ground yarn comprising a covering yarn in which polyurethane yarn is covered with nylon yarn, and the wearing pressure of the leg portion is gradually reduced in this order.

Further, the combined thickness of the face yarn and the ground yarn is preferably in the range of 50 denier to 110 denier.

Preferably, the thickness of the face yarn is in the range of 5 to 35 deniers, and the thickness of the ground yarn is in the range of 40 to 80 deniers.

Preferably, the surface roughness of the back surface of the leg portion by the KES method is in a range of 6.0 μm to 7.8 μm, the average friction coefficient of the back surface of the leg portion by the KES method is 0.35 or less, and the variation of the average friction coefficient of the back surface of the leg portion by the KES method is 0.016 or less.

Preferably, the ankle wearing pressure is in the range of 13hPa to 30hPa, the calf wearing pressure is in the range of 8hPa to 25hPa, and the thigh wearing pressure is in the range of 4hPa to 21 hPa.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a lower limb garment designed to be worn in a stepwise fashion with a smooth texture.

Drawings

Fig. 1 is a front view of a lower limb garment according to an embodiment of the present invention.

Fig. 2 is a front view showing a knitting structure of a leg portion of the lower limb garment of fig. 1.

Description of the reference numerals

1. Clothes for lower limbs; 2. a leg portion; 21. an ankle portion; 22. a calf portion; 23. a thigh section; 3. a short pants part; 31. a waist belt; 4. a foot portion; 5. a face yarn; 6. bottom yarn; l, the longitudinal direction.

Detailed Description

Hereinafter, a lower limb garment according to an embodiment of the present invention will be described with reference to the accompanying drawings. However, the following embodiments are examples, and the lower limb clothes of the present invention are not limited to the following examples. In the present specification, the term "upper" refers to the upper side of the human body in the height direction, and the term "lower" refers to the lower side of the human body in the height direction. The term "front" refers to the side of the human body opposite to the skin of the human body worn on the clothes for the lower limbs of the human body, and the term "back" refers to the side of the human body facing the skin worn on the clothes for the lower limbs of the human body.

As shown in fig. 1, a lower limb garment 1 of the present embodiment is a garment that is provided with leg portions 2 and is worn and used on the lower limbs of a human body. In the present embodiment, the lower limb garment 1 includes, in addition to the leg portions 2, shorts 3 and leg portions 4 formed continuously to both ends in the vertical direction of the leg portions 2. However, the lower limb garment of the present invention may not include the pants 3 and the leg portions 4, and may be configured to include only leg portions for one leg, for example. The lower limb garment 1 is not particularly limited, and may be embodied as, for example, silk stockings, panty stockings, tights, leggings, and the like.

The pants part 3 covers the area from the lower abdomen to the waist and buttocks of the human body. As shown in fig. 1, the pants part 3 is not sewn to the leg part 2, but is integrally formed with the leg part 2 at the upper part of the leg part 2. The pants 3 have 1 opening at the upper part of the waist of the human body and 2 openings at the lower part communicating with the legs 2. At the upper end of the pants part 3, the knitted fabric forming the pants part 3 is folded back in the vertical direction and the end is sewn to form a waist belt 31. The pants 3 are configured to restrain the lower limb garment 1 from slipping down by tightening the waist of the human body with the waist belt 31. The pants 3 are formed of the same knitted fabric as the leg portions 2, and have a smooth touch to the skin as described below.

The foot portion 4 covers the foot portion including the toe. As shown in fig. 1, the foot 4 is not sewn to the leg 2, but is integrally formed with the leg 2 at the lower portion of the leg 2. The lower end (toe portion) of the leg portion 4 is closed and formed into a bag shape by sewing the knitted fabrics forming the leg portion 4 to each other. The leg portion 4 is formed of the same knitted fabric as the leg portion 2, and has a smooth touch to the skin as described below.

As shown in fig. 1, the leg portion 2 includes an ankle portion 21, a calf portion 22, and a thigh portion 23, and covers substantially the entire portion in the longitudinal direction L from the ankle of the lower limb to the crotch of the thigh of the human body. The leg portion 2 is designed such that the wearing pressure on the skin of the human body gradually decreases in the order of the ankle portion 21, the calf portion 22, and the thigh portion 23 when the garment 1 for lower limbs is worn on the lower limb of the human body. Thus, the lower limb garment 1 is worn on the lower limbs of the human body, and presses muscles to cause blood to flow upward, thereby reducing fatigue and edema of the lower limbs. The leg portion 2 is not particularly limited as long as the wearing pressure is gradually reduced in the order of the ankle portion 21, the calf portion 22, and the thigh portion 23, but it is preferable that the wearing pressure of the ankle portion 21 is in the range of 13hPa to 30hPa, the wearing pressure of the calf portion 22 is in the range of 8hPa to 25hPa, and the wearing pressure of the thigh portion 23 is in the range of 4hPa to 21 hPa.

As shown in fig. 2, the leg portion 2 has a plating knitting structure in which a face yarn 5 and a ground yarn 6 are combined. Plating knitting is a knitting method in which the face yarn 5 and the ground yarn 6 are knitted simultaneously, the face yarn 5 mainly appears on the front surface (the side opposite to the skin of the human body) of the knitted fabric, and the ground yarn 6 mainly appears on the back surface (the side of the skin of the human body) of the knitted fabric. The face yarn 5 is a nylon yarn, and the ground yarn 6 is a covering yarn in which a polyurethane yarn is covered with a nylon yarn. The ground yarn 6 may be a core yarn in which a polyurethane yarn is covered with a nylon yarn, and may be a single core yarn in which 1 layer of the nylon yarn is wound around the polyurethane yarn, or a double core yarn in which 2 layers of the nylon yarn are wound around the polyurethane yarn.

The leg portion 2 has a plating knitting structure in which a face yarn 5 of a nylon yarn and a ground yarn 6 formed by covering a polyurethane yarn with a nylon yarn are formed into a group, and thereby the skin feel becomes smooth. This is believed to benefit from two aspects: 1. when nylon yarn having a small frictional resistance against the skin is used for both the face yarn 5 and the ground yarn 6, and the plating knitting is performed with 2 yarns, the knitted fabric becomes bulky and the surface irregularities become large, but the fabric becomes soft due to the bulkiness and the irregularities are easily deformed. In particular, it is considered that: in the knitted fabric subjected to plating knitting, even if the knitted fabric is stretched in order to apply a wearing pressure to the legs, the knitted fabric is stretched mainly so that the unevenness becomes flat because of the bulky state, and the ground yarn 6 itself mainly appearing on the skin side of the human body is suppressed from stretching. Consider that: by suppressing the elongation of the ground yarn 6 itself and exposing the polyurethane yarn having a high friction coefficient to the front surface, the variation of the average friction coefficient of the back surface of the knitted fabric is suppressed, and a smooth touch feeling to the skin is obtained.

In order to further improve the smoothness of the skin feel, the leg portions 2 are preferably formed such that the surface roughness SMD of the back surface of the leg portions 2 based on the KES (Kawabata Evaluation System) method is in the range of 6.0 μm to 7.8 μm. The surface roughness SMD of the back surface of the leg portion 2 is preferably 6.0 μm or more, more preferably 6.5 μm or more, and even more preferably 6.8 μm or more, whereby the flexibility of the knitted fabric is increased and a smoother touch can be imparted to the skin. The surface roughness SMD of the back surface of the leg portion 2 is preferably 7.8 μm or less, more preferably 7.5 μm or less, and even more preferably 7.2 μm or less, whereby variation in the average friction coefficient is suppressed and a smoother feel to the skin can be obtained.

The surface roughness SMD by the KES method in the present embodiment is a value measured by using a surface tester (KES-FB 4, manufactured by kupffer corporation), and is a value obtained by placing a test piece cut out from the leg portion 2 in the surface tester and using a roughness contact: (

The piano wire of (1), contact surface width: 5 mm) was brought into contact with a test piece (back surface side) by applying a load of 10gf, and the average deviation of the data of the surface unevenness was measured by moving the test piece at a tension of 20gf/cm and a speed of 1mm/sec.

In order to further improve the smoothness of the tactile sensation of the skin, the leg portions 2 are preferably formed such that the average friction coefficient MIU based on the KES method of the back surfaces of the leg portions 2 is 0 or more and 0.35 or less. The average friction coefficient MIU of the leg portion 2 is preferably 0.35 or less, more preferably 0.33 or less, and even more preferably 0.31 or less, whereby the contact resistance when contacting the skin is reduced, and a smoother touch can be imparted to the skin. The variation MMD of the average friction coefficient by the KES method on the back surface of the leg portion 2 is preferably 0 or more and 0.016 or less. The MMD of the variation MMD of the average friction coefficient of the leg portion 2 is preferably 0.016 or less, more preferably 0.015 or less, and even more preferably 0.014 or less, and thus variation in contact resistance when in contact with the skin is reduced, and a smoother feel can be imparted to the skin.

The average friction coefficient MIU and the variation MMD of the average friction coefficient by the KES method in the present embodiment mean an average value and an average deviation between 20mm of the friction coefficient measured by using a surface tester (KES-FB 4, manufactured by kukukukukukusho), and a test piece cut out from the leg 2 was set in the surface tester and a friction material (a friction material was used)

10 piano wires were arranged in parallel, and the contact area: 5mm × 5 mm) was brought into contact with a test piece (back surface side) by applying a load of 50gf, and the average value and average deviation of the friction coefficient measured by moving the test piece at a tension of 20gf/cm and a speed of 1mm/sec.

The combined thickness of the face yarn 5 and the ground yarn 6 included in the leg portion 2 (the sum of the thicknesses of both yarns) is not particularly limited, but is preferably 50 deniers or more, more preferably 60 deniers or more, and still more preferably 70 deniers or more, from the viewpoint of enhancing the strength of the knitted fabric. In addition, from the viewpoint of further suppressing the variation in the average friction coefficient of the back surface of the leg portions 2 and further improving the smoothness of the touch, the combined thickness of the face yarns 5 and the ground yarns 6 is preferably 110 deniers or less, more preferably 100 deniers or less, and still more preferably 90 deniers or less.

The thickness of each of the face yarn 5 and the ground yarn 6 is not particularly limited as long as the combined thickness of the face yarn 5 and the ground yarn 6 is within the above range. However, in view of enhancing the strength of the knitted fabric, the thickness of the face yarn 5 is preferably 5 deniers or more, more preferably 10 deniers or more, and still more preferably 15 deniers or more. In addition, from the viewpoint of further suppressing the variation in the coefficient of friction of the back surface of the knitted fabric and further improving the smoothness of the touch and feel, the thickness of the face yarn 5 is preferably 35 denier or less, more preferably 30 denier or less, and still more preferably 25 denier or less. In addition, the thickness of the ground yarn 6 is preferably 40 deniers or more, more preferably 45 deniers or more, and still more preferably 50 deniers or more, from the viewpoint of enhancing the strength of the knitted fabric. In addition, from the viewpoint of further suppressing the variation in the coefficient of friction of the back surface of the knitted fabric and further improving the smoothness of the touch and feel, the thickness of the ground yarn 6 is preferably 80 deniers or less, more preferably 75 deniers or less, and still more preferably 70 deniers or less.

The leg portion 2 may have a plating knitted structure formed by combining the face yarn 5 and the ground yarn 6 in at least a part thereof, or may have a structure other than the plating knitted structure in another part thereof. In addition, in the plating-knitted structure, at least the face yarn 5 includes a nylon yarn, the ground yarn 6 includes a covering yarn in which a polyurethane yarn is covered with a nylon yarn, and the face yarn 5 and the ground yarn 6 may include other types of yarns.

Examples

Hereinafter, the lower limb garment of the present embodiment will be specifically described based on examples. However, the lower limb garment of the present invention is not limited to the following examples.

(example 1)

The leg portion was formed by plating knitting using a nylon yarn of 20 denier as the face yarn and a single covered yarn of 60 denier covered with a polyurethane yarn as the ground yarn. The wearing pressure of the leg portion measured by a known method is shown in table 1.

Comparative example 1

The leg portion was formed by a zakki knitting using an 80-denier double-covered yarn in which a polyurethane yarn was covered with a nylon yarn. The wearing pressure of the leg portion measured by a known method is shown in table 1.

Comparative example 2

The leg portion was formed by plating knitting using 110 denier acrylic yarn as the face yarn and 110 denier single core spun yarn of polyurethane yarn covered with nylon yarn as the ground yarn. The wearing pressure of the leg portion measured by a known method is shown in table 1.

[ Table 1]

(measurement of surface roughness SMD based on KES method)

The surface roughness SMD was measured by using a surface tester (KES-FB 4, manufactured by Kyoto technologies Co., ltd.). Placing a test piece cut from the thigh of the leg on a surface tester using a roughness probe (b) ((b))

Piano wire, contact surfaceWidth: 5 mm) was applied with a load of 10gf, and the test piece was moved at a tension of 20gf/cm and a speed of 1mm/sec, and the average deviation of the data of the irregularities of the surface measured at this time was determined as the surface roughness SMD.

(measurement of average Friction coefficient MIU and variation of average Friction coefficient MMD based on KES method)

The average friction coefficient MIU and the variation of the average friction coefficient MMD were measured using a surface tester (KES-FB 4, manufactured by Kyoto Co., ltd.). A test piece cut from the thigh of the leg was set in a surface tester using a rubbing member (A)

10 piano wires were arranged in parallel, and the contact area: 5mm x 5 mm) was brought into contact with the back surface of the test piece by applying a load of 50gf, the test piece was moved at a tension of 20gf/cm and a speed of 1mm/sec, and the average value and the average deviation between 20mm of the friction coefficient measured at that time were determined as the average friction coefficient MIU and the fluctuation MMD of the average friction coefficient, respectively.

(sensory evaluation of smoothness of skin touch)

42 panelists evaluated smoothness of touch of the skin when wearing the lower limb clothes according to the following sensory evaluation criteria (grade 5 evaluation), and evaluated the smoothness on average of the 42 panelists.

5: is easy to wear with a completely smooth skin feel

4: is easy to wear with a substantially smooth skin feel

3: it is not good saying that

2: cannot be said to be easy to wear with a substantially smooth skin feel

1: it cannot be said that it is easy to wear with a completely smooth skin touch

(evaluation results)

Table 2 shows the evaluation results of example 1, comparative example 1, and comparative example 2. In comparative example 1 and comparative example 1, the surface roughness SMD of example 1 was large, and the variation MMD of the average friction coefficient was small. From this result, it is understood that even if the yarn used has the same thickness, the plating knitting increases the surface unevenness and reduces the variation in the average friction coefficient. Also, the evaluation of the smoothness of the skin feel of example 1 having such a surface became high. Consider that: the smoothness of the touch of the skin is improved because the knitted fabric becomes bulky by plating knitting and the surface irregularities become large, but the fabric becomes soft by the bulkiness and the irregularities are easily deformed. In particular, it is considered that: in the knitted fabric subjected to plating knitting, even if the knitted fabric is stretched in order to apply a wearing pressure to the legs, the knitted fabric is stretched so that the unevenness is mainly flattened because the knitted fabric is bulky, and the stretch of the ground yarn itself mainly appearing on the skin side of the human body is suppressed. Consider that: by suppressing the elongation of the ground yarn itself and exposing the polyurethane yarn having a high friction coefficient to the front surface, the variation of the average friction coefficient of the back surface of the knitted fabric is suppressed, and a smooth touch feeling to the skin is obtained.

Next, comparing example 1 and comparative example 2, the surface roughness SMD of example 1 is small, and the average friction coefficient MIU and the variation MMD of the average friction coefficient are small. From the results, it is found that even in the same plating knitting, by using a nylon yarn for the face yarn, the thickness of the yarn used is reduced, the unevenness of the surface is reduced, and the average friction coefficient and the variation of the average friction coefficient are reduced. Consider that: the average friction coefficient and the variation of the average friction coefficient are both reduced by at least 1 of using a nylon thread having a small frictional resistance against the skin for both the face yarn and the ground yarn, reducing the unevenness by using a nylon thread for the face yarn, and reducing the unevenness by reducing the thickness of the yarn used. In comparative example 2, as in comparative example 1, the average friction coefficient of the back surface of the knitted fabric varied greatly as compared to example 1, and the smoothness to the skin was therefore reduced.

[ Table 2]

	Example 1	Comparative example 1	Comparative example 2
				Surface roughness SMD (mum)	6.947	3.254	7.949
Mean coefficient of friction MIU	0.293	0.289	0.391
				Variation of mean coefficient of friction MMD	0.0135	0.0178	0.0172
Smoothness of skin feel (grade 5 evaluation)	4.1	3.6	-

Claims

1. A lower limb garment comprising leg portions designed such that the wearing pressure gradually decreases in the order of ankle portion, calf portion, and thigh portion, wherein,

the leg portion has a plated woven structure composed of face yarns and ground yarns,

the face yarn comprises a nylon thread and a nylon yarn,

the ground yarn includes a core spun yarn of polyurethane yarn covered with nylon yarn.

2. The lower extremity garment of claim 1,

the combined thickness of the face yarn and the ground yarn is in the range of 50 to 110 deniers.

3. The lower limb garment according to claim 1 or 2,

the thickness of the face yarn is in the range of 5 to 35 deniers,

the thickness of the ground yarn is in the range of 40 denier to 80 denier.

4. The lower limb garment according to any one of claims 1 to 3,

the surface roughness of the back surface of the leg portion based on the KES method is in the range of 6.0 to 7.8 μm,

the average friction coefficient based on the KES method of the back surface of the leg portion is 0.35 or less,

the variation of the average friction coefficient of the back surface of the leg portion by the KES method is 0.016 or less.

5. The lower extremity garment according to any one of claims 1 to 4,

the ankle wearing pressure is in the range of 13hPa to 30hPa, the calf wearing pressure is in the range of 8hPa to 25hPa, and the thigh wearing pressure is in the range of 4hPa to 21 hPa.