JPH08127946A - Double-sided knitted fabric - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a double-sided knit fabric which is excellent in wearing comfort, eliminates discomfort caused by sweating, and permanently maintains these performances. [Composition] A double-sided knitted fabric composed of a front knitted fabric layer and a back knitted fabric layer, the back knitted fabric layer comprising a concave surface joined to the front knitted fabric layer and a convex surface not joined to the front knitted fabric layer, A hydrophobic filament in which a pattern having an area ratio of the concave surface to the convex surface of 1: 4 to 4: 1 is formed on the back knitted fabric layer, and the concave surface is a drawn yarn or a processed yarn having a crimp ratio of 15% or less. The convex surface is composed of two or more kinds of composite hydrophobic filaments having a single yarn denier ratio of 1: 1.3 or more.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a double-sided knitted fabric.

[0002]

2. Description of the Related Art Conventionally, in sportswear, underwear, etc., a double-sided knitted fabric using hydrophilic fibers such as cotton for the knitted fabric layer on the back side, so-called back-knitted fabric layer, has been widely adopted. The reason for its adoption is that it is comfortable to wear due to the excellent hygroscopicity of hydrophilic fibers.

However, the double-sided knitted fabric using hydrophilic fibers in the back knitted fabric layer often gives discomfort such as stuffiness, stickiness and coldness after exercise when sweating is intense. It is considered that this is because the hydrophilic fibers used in the back knitted fabric layer have a large water retention property, so that the migration and diffusion to the front knitted fabric layer are small and the sweat is retained. The same phenomenon is observed in underwear and the like, which is one of the major drawbacks of the double-sided knitted fabric using hydrophilic fibers in the back knitted fabric layer.

With respect to the problem of eliminating the discomfort caused by sweating, many proposals have been made for knitted fabrics. The first proposal is a double-sided knitted fabric in which the back knitted fabric layer is composed of hydrophobic fibers, for example, a two-layer structure knitted fabric in which the back knitted fabric layer is composed of hydrophobic fibers and the front knitted fabric layer is composed of hydrophilic fibers,
A three-layer structure knitted fabric in which the back and front knitted fabric layers are composed of hydrophobic fibers and the intermediate layer is composed of hydrophilic fibers. The second proposal is, as shown in FIG. 2, a knitted fabric to which a reversible design is applied. For example, polyester yarn is used for the front knitted fabric layer 1 and the intermediate layer 2, and cotton yarn is used for the back knitted fabric layer 3. The third proposal is a chemical post-treatment treatment for improving the hydrophilicity of the knitted fabric.

However, even with these proposed knitted fabrics, the wearing comfort has not been sufficiently satisfied.
That is, in the two-layer structure knitted fabric or the three-layer structure knitted fabric in which hydrophobic fiber is used for the back knitted fabric layer of the first proposal, a large amount of sweat is generated as compared with the case where hydrophilic fiber is used for the back knitted fabric layer. In this case, the water retention is poor and the migration of sweat due to the capillary phenomenon is limited, so that the sticky feeling has not been resolved.

Further, the double-sided knitted fabric using hydrophobic fibers for the back knitted fabric layer has a great disadvantage that it is inferior in comfort when sweating less than the double-sided knitted fabric using hydrophilic fibers for the back knitted fabric layer. Many have been pointed out. It is considered that this is because the humidity between the back knitted fabric layer and the skin reaches saturation in a short time as compared with the case where hydrophilic fibers are used.

Regarding the second proposal, since the back knitted fabric layer is flat, the contact area with the skin is large, and when a large amount of sweat is produced,
It is a factor that rather causes discomfort, and since the back knit fabric layer is all hydrophilic fibers, a large amount of sweat stays in the back fabric layer,
Polyester processed yarn does not sufficiently perform sweat migration and diffusion. Further, regarding the third proposal, as the number of washings increases, the effect thereof decreases as the number of washings increases, and it is impossible to permanently maintain the performance.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a double-sided knitted fabric which is excellent in wearing comfort, eliminates discomfort caused by sweating, and permanently retains these performances.

[0009]

The present invention is a double-sided knitted fabric consisting of a front knitted fabric layer and a back knitted fabric layer, wherein the back knitted fabric layer is in contact with the concave surface and the front knitted fabric layer which are joined to the front knitted fabric layer. It consists of unbonded convex surfaces, and the area ratio of the concave surface to the convex surface is 1: 4 to 4: 1.
Is formed on the back knitted fabric layer, and the concave surface is composed of a drawn filament or a processed filament having a crimp ratio of 15% or less, and the convex surface has a single yarn denier ratio of 1:
The double-sided knitted fabric is characterized by being composed of two or more kinds of composite hydrophobic filaments of 1.3 or more.

FIG. 1 shows a model cross-sectional view of an example of the double-sided knitted fabric of the present invention. The double-sided knitted fabric of the present invention comprises a front knitted fabric layer 4 and a back knitted fabric layer 5, and a back knitted fabric layer 5 Is the concave surface 6 connected to the surface knitted fabric layer 4 and the convex surface 7 not connected to the surface knitted fabric layer 4
It is a reversible knitted fabric. In the back knitted fabric layer 5 of the double-sided knitted fabric of the present invention, it is necessary that the pattern is formed on the back knitted fabric layer 5 by the concave surface 6 and the convex surface 7, and the concave surface 6 and the convex surface 7 are formed. When forming a handle by
And the area ratio of the convex surface 7 is 1: 4 to 4: 1, preferably 1 :.
2 to 2: 1.

In the present invention, the concave surface 6 and the convex surface 7 are not points or lines in which one loop is continuous, but concave and convex portions are formed continuously in two or more in the well and / or course direction. It refers to the face part. If the concave portion and the convex portion are points or lines, absorption and diffusion of sweat are extremely insufficient as compared with the surface.

The concave surface 6 and the convex surface 7 are determined by the area of the product of the number of wales and the number of courses, but the area ratio of the concave surface 6 and the convex surface 7 is outside the range of 1: 4 to 4: 1. Then, the knitted fabric in which the part in contact with the skin is biased to one of the concave surface 6 or the convex surface 7 and only one of the sweat absorbing action, the transfer action and the diffusing action is exerted and the object of the present invention cannot be achieved. Become. The size of the concave surface 6 and the convex surface 7 depends on the knitting structure, the yarn structure, etc., but if the surface is too large, the sweat absorbing action, the transfer action, and the diffusing action become uneven. It is desirable that the convex surface 7 is evenly arranged in the range.

FIG. 3 shows a model plan view of an example of the pattern of the back knitted fabric layer of the double-sided knitted fabric of the present invention.
The hydrophobic filament 9 has 3 courses × 2 wells = 6, and the composite hydrophobic filament 10 has 3 courses × 2 wells = 6. Therefore, the hydrophobic filament 9 is composited with the concave surface formed by the hydrophobic filament 9. Hydrophobic filament 10
The area ratio of the convex surface formed by is 6: 6 = 1: 1.

In the present invention, the concave surface is composed of a drawn filament or a processed filament having a crimp ratio of 15% or less, which is a hydrophobic filament. The hydrophobic filaments that form the concave surface exert a sweat migration and diffusion function. When the concave surface is composed of a hydrophilic fiber or a hydrophobic span, the hydrophilic fiber retains sweat due to high water retention, and the hydrophobic span retains sweat due to entanglement of yarns. Reduces sweat migration and diffusion.

Therefore, when using a textured yarn having a crimp as the hydrophobic filament forming the concave surface, it is necessary to use a textured yarn having a crimp ratio of 15% or less with little or no entanglement of the yarn. Become. The crimp ratio of the textured yarn in the present invention is determined as follows.

1) The sample was wound 10 times under a tension of the following load (W ₀ ) with a measuring machine having a frame circumference of 1 m to make a 10 m hose, and after heat treatment in hot water of 90 ° C. for 20 minutes, 20 ° C. , 65
Allow to stand for 24 hours at% RH. 2) Apply the following initial load (W ₁ ) to the lower end with the cassette in a vertical state, leave it for 1 minute, and then remove the initial load (W ₁ ). 3) Apply the following load (W ₂ ) and leave it for 1 minute. Measure the length of the cassette (L ₁ ) and remove the load (W ₂ ). 4) After standing for 2 minutes, apply the initial load (W ₁ ) again, and after standing for 1 minute, measure the length of the cassette (L ₂ ). 5) The crimp rate is calculated by the following formula.

Load (W ₀ ): 1/10 g per 1 denier of the indicated fineness Initial load (W ₁ ): 2/10 per 1 denier of the indicated fineness
Number of g of 00 × 20 Load (W ₂ ): 1/10 × per 1 denier of the indicated fineness
20 g crimp ratio (%) = (L ₁ −L ₂ ) / L ₁ × 100

The convex surface is composed of two or more kinds of composite hydrophobic filaments (composite hydrophobic filaments). When the convex surface is composed of a hydrophilic span or a filament or a hydrophobic span, the hydrophilic span or filament has an excellent sweat absorbing action, but does not have sufficient sweat migration and diffusing action and thus has a hydrophobic span. If so, sweat absorption is insufficient.

The composite hydrophobic filament forming the convex surface is a composite of two or more filaments having a single yarn denier ratio of 1: 1.3 or more, preferably 1: 2 or more. For example, 150 denier (d) / 96 filaments (f) filaments and 15
When the filaments of 0d / 30f are compounded, the ratio of denier of single yarn is 1.56: 5 = 1: 3.21. The composite hydrophobic filament having such a single yarn denier structure not only directly contacts the skin and exerts a sweat absorbing action,
Exhibits migration and diffusion effects.

At least one of the composite hydrophobic filaments has a single yarn denier of 2d or less, especially 1.
It is preferable that the filaments have a d or less from the viewpoint of facilitating a sweat absorbing action due to a capillary phenomenon and comfort. Furthermore, it is preferable that at least one of the composite hydrophobic filaments is a modified cross-section filament in terms of not only sweat absorption but also migration and diffusion. A triangular cross section, and further a combination of a circular cross section and a Y cross section or a hollow cross section is effective.

In the present invention, the hydrophobic filaments forming the concave and convex surfaces are filaments having a moisture content of 5% or less at 20 ° C. and 65% RH, such as polyester fiber, polyamide fiber, acrylic fiber and the like. , Especially multi-filaments, which may be compounded such as mixed fibers. Further, the compounding in the compounded hydrophobic filament may be based on any means such as mixed fibers, spun yarn, spun yarn and the like. .

The structure of the surface knitted fabric layer in the double-sided knitted fabric of the present invention is not particularly limited, but a structure having a large surface area such as honeycomb or picket in order to promote the perspiration of sweat from the surface knitted fabric layer into the outside air. Is preferred. The yarn constituting the surface knitted fabric layer is not particularly limited, but a hydrophobic or hydrophilic filament or span is used.

In the present invention, the method of forming the concave surface and the convex surface of the back knitted fabric layer is not particularly limited, but the hydrophobic filaments forming the concave surface of the back knitted fabric layer are tacked on the surface knitted fabric layer and the tucked surface. A reversible knitted fabric is obtained by forming the composite hydrophobic filaments, which are knotted and constitute the convex surface, into a plain knitted knit without being tucked to the surface knitted fabric layer. Therefore, the obtained knitted fabric is a double-sided knitted fabric having a two-layer structure, and each layer can be given a new function.

In the surface knitted fabric layer, a modified structure such as honeycomb, pique, twill can be adopted, and a knitted fabric having an excellent appearance can be obtained. Furthermore, when a high-strength yarn is used for the surface knitted fabric layer, a high-strength reversible knitted fabric having excellent wearing comfort and comfort during sweating can be obtained.

Further, also in the back knitted fabric layer, a new effect can be created by changing not only the area ratio of the concave surface and the convex surface, but also the combination, the difference in unevenness and the like. For example, it is possible to select an arbitrary pattern such as a checkered pattern by combining concave and convex surfaces, and to obtain a reversible knitted fabric in which the front knitted fabric layer is well-balanced and the back knitted fabric layer is uneven and the pattern pattern changes. You can also Further, by adding a change to the unevenness difference between the concave surface and the convex surface, for example, by increasing the stitches of the composite hydrophobic filament on the convex surface to increase the air entanglement amount in the stitch,
A reversible knitted fabric with excellent heat retention and cushioning properties, or by forming the concave surface with a fine filament of hydrophobic filament and increasing the height of the convex surface to make a reversible knitted fabric with an excellent lightweight feel. .

In the double-sided knitted fabric of the present invention, at least the concave and convex surfaces of the back knitted fabric layer are composed of hydrophobic filaments, and the double-sided knitted fabric of the present invention is represented by a hydrophilic agent such as polyethylene glycol. It may be hydrophilized with polyoxyalkylene glycol or the like, and the hydrophilization further enhances the sweat absorbing action, migration and diffusion action. The hydrophilic treatment method is not particularly limited,
The hydrophilizing agent and the treatment method are selected depending on the yarn structure of the double-sided knitted fabric, the knitting structure and the like.

[0027]

EXAMPLES The present invention will be specifically described below with reference to examples.

(Example 1) Using a 20-gauge double jersey machine, 150 d / 48 f bright polyester textured yarn was used for the front knitted fabric layer, and 75 d / 24 f bright polyester stretched yarn and convex parts were used for the concave surface of the back knitted fabric layer. A reversible knitted fabric was formed by using a composite filament in which a semi-dye polyester processed yarn 75d / 36f and a semi-dye polyester processed yarn 100d / 72f were mixed on the surface with air.

In knitting, the back knitted fabric layer has a concave surface and a convex surface, the product of the number of courses × the number of wales is 6, and the checkered pattern has an area ratio of the concave surface to the convex surface of 1: 1. The formation was a honeycomb reversible knitted fabric. The basis weight after dyeing is 300
g / m ² and sewn into training wear. As a result of wearing this training wear, it is comfortable to wear,
Even in the wearing test when sweating due to jogging, sweat passes through the composite filament layer on the convex surface that comes into contact with the skin,
It was confirmed that it migrates to the inner hydrophobic filament and diffuses.

Further, the surface knitted fabric layer is a bright polyester processed yarn 150d / 48f, the concave face of the back knitted fabric layer is a bright polyester drawn yarn 75d / 24f, and the convex face is a semi-dal polyester Y-section yarn 75d / 36f and a semi-dal polyester treated. A knitted fabric formed in the same manner was used as training wear by using a composite filament in which yarn 100d / 72f was mixed with air.

This training wear uses a bright polyester textured yarn 150d / 48f for the surface knitting layer, a bright polyester textured yarn 75d / 24f for the tack part, and a cotton / polyester blended yarn 30/1 for the back knitting fabric 30/1.
Compared to 0 g / m ² reversible knitted lining wear, it improves stuffiness when sweating, stickiness and cold feeling after exercise, and the processability when knitting knitted fabric is also comparative. It was extremely good as compared with the time of knitting.

[0032]

INDUSTRIAL APPLICABILITY The double-sided knitted fabric of the present invention, when used as clothing, when sweating, sweat is mainly absorbed by the convex surface of the back-knitted fabric layer which is in contact with the skin and is transferred and diffused to the back-knitted fabric layer. On the concave surface, the sweat that has migrated and diffused is further migrated and diffused, and while the back knitted fabric layer is composed of hydrophobic filaments, good sweat absorption, migration and diffusion effects are exhibited. In addition, since the recessed surface of the back knitted fabric does not directly contact the skin closely, there is no discomfort such as stickiness due to sweat, and it is comfortable to wear, so it is excellent in wearing comfort and structurally imparts these performances. It is permanent and permanent.

Further, the double-sided knitted fabric of the present invention is suitable as a material for clothes, such as sportswear and underwear, which cause a lot of sweating when used, especially sportswear, and
Since the main constituent fibers of the knitted fabric are hydrophobic filaments, it is possible to obtain a double-sided knitted fabric with good processability when knitting, based on the hydrophobic filaments.

[Brief description of drawings]

FIG. 1 is a model cross-sectional view of an example of a double-sided knitted fabric of the present invention.

FIG. 2 is a model cross-sectional view of a normal reversible knitted fabric.

FIG. 3 is a model plan view of an example of the pattern of the back knitted fabric layer of the double-sided knitted fabric of the present invention.

[Explanation of symbols]

 1 Front knitted fabric layer 2 Intermediate layer 3 Back knitted fabric layer 4 Front knitted fabric layer 5 Back knitted fabric layer 6 Recessed surface 7 Convex surface

Claims (3)

[Claims] 1. A double-sided knitted fabric comprising a front knitted fabric layer and a back knitted fabric layer, wherein the back knitted fabric layer is composed of a concave surface which is joined to the front knitted fabric layer and a convex surface which is not joined to the front knitted fabric layer. And a pattern in which the area ratio of the concave surface to the convex surface is 1: 4 to 4: 1 is formed in the back knitted fabric layer, and the concave surface is a drawn yarn or a processed yarn having a crimp ratio of 15% or less. A double-sided knitted fabric composed of two or more kinds of composite hydrophobic filaments having a single yarn denier ratio of 1: 1.3 or more, the convex surface being composed of a hydrophilic filament. 2. The double-sided knitted fabric according to claim 1, wherein at least one kind of the hydrophobic filaments constituting the convex surface is a modified cross-section filament. 3. The double-sided knitted fabric according to claim 1, wherein the double-sided knitted fabric is hydrophilized.