JPH08218253A - Interlock knit fabric - Google Patents

Abstract

PURPOSE: To provide an interlock knit fabric having excellent wearing comfortableness, free from disagreeable feeling caused by sweating and capable of permanently keeping the performance. CONSTITUTION: This interlock knit fabric has a top knit layer 7 and a back knit layer 4 made of a hydrophobic filament. The back knit layer 4 is composed of recesses 6 connected to the top knit layer 7 and protrusions 5 free from connection with the top knit layer. The recesses 6 and the protrusions 5 together form a pattern. The denier of the yarn at the recess 6 is <=1/2 of that of the protrusion 5. The yarn of the recess is composed of hydrophobic filaments consisting of a drawn yarn or a finished yarn having a percentage crimp of <=15%. The knit face of the recess is composed of a mesh of >=2 stitches.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided knitted fabric suitable for sportswear, underwear and the like.

[0002]

2. Description of the Related Art Conventionally, in sportswear, underwear, etc., the back side stitch, that is, the back knitted fabric layer, is made of hydrophilic fiber such as cotton due to the excellent hygroscopicity of hydrophilic fiber. Many knitted fabrics were used. However, a double-sided knitted fabric using hydrophilic fibers for such a back knitted fabric layer,
We often experience discomfort such as stuffiness, stickiness, and coldness after exercise when sweating intensely. It is considered that this is because the hydrophilic fiber of the back knitted fabric layer has a large water retention property, so that the sweat is retained, the migration and diffusion of the sweat to the surface knitted fabric layer is small, and the stuffiness and stickiness are generated. The same phenomenon is observed in double-sided knitted fabrics used for underwear and the like, which is one of the major drawbacks of double-sided knitted fabrics that use hydrophilic fibers in the back knitted fabric layer.

In order to eliminate this discomfort during sweating, various knitted fabrics have been conventionally proposed, which are classified into the following three types. That is, the first double-sided knitted fabric 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, It is a three-layer structure knitted fabric in which the front and back knitted fabric layers are composed of hydrophobic fibers and the intermediate layer is composed of hydrophilic fibers. These double-sided knitted fabrics use a hydrophobic fiber having low water retention in the back knitted fabric layer to reduce the retention of sweat, and a large amount of water such as that seen when a hydrophilic fiber having large water retention is used in the back knitted fabric layer. In order to prevent wearing discomfort during sweating, the hydrophobic fiber efficiently utilizes the capillary phenomenon, and multifilament yarn is often used in order to transfer sweat to the surface knitted fabric layer.

The second double-sided knitted fabric is, as shown in FIG. 2, a double-sided knitted fabric to which a reversible structure generally adopted in sportswear is applied. For example, surface knitted layer 1
Also, a polyester processed yarn is used for the intermediate layer 2 and a cotton yarn is used for the back knitted fabric layer 3. This double-sided knitted fabric transfers the sweat held by the cotton yarn 3 to the polyester-processed yarns 1 and 2 so as to always keep the water retention of the cotton yarn 3 large.

Further, in the third double-sided knitted fabric, the hydrophilicity of the fibers constituting the knitted fabric is improved so that sweat can be transferred and diffused smoothly throughout the knitted fabric, and the water retention of the back knitted fabric layer can be lowered. It is a double-sided knitted fabric that has been chemically post-processed.

[0006]

However, even in each of the above-mentioned double-sided knitted fabrics, the wearing comfort has not been sufficiently satisfied. That is, in the two-layer or three-layer structure knitted fabric in which the hydrophobic fiber is used for the first back knitted fabric layer, when a large amount of sweat is generated as compared with the case where the hydrophilic fiber is used for the back knitted fabric layer. The sticky feeling has not been resolved due to poor water retention and limited migration of sweat due to capillary action. It is also important to note that double-sided knitted fabrics that use hydrophobic fibers for these back knitted fabric layers are less comfortable to wear when sweating less than double-sided knitted fabrics that use hydrophilic fibers. It has been pointed out. It is considered that this is because the humidity between the skin and the back knitted fabric reaches saturation in a short time as compared with the case where hydrophilic fibers are used.

Further, regarding the second double-sided knitted fabric, since the back knitted fabric layer is flat, the contact area with the skin is large,
It is considered to be one of the factors that cause discomfort when sweating a lot. Further, it is considered that since all the back knitted fabric layers are hydrophilic fibers, a large amount of sweat stays in the backing layer, and the polyester processed yarn cannot sufficiently perform sweat migration and diffusion action. Furthermore, regarding the above-mentioned third double-sided knitted fabric, sportswear,
There is a problem in that the effect of clothes that has been washed a lot, such as underwear, is gradually reduced and the performance cannot be maintained permanently. An object of the present invention is to provide a double-sided knitted fabric which is excellent in wearing comfort, has no discomfort during sweating, and can maintain its performance permanently.

[0008]

The above problem is a double-sided knitted fabric in which the front knitted fabric layer and the back knitted fabric layer are composed of hydrophobic filaments, and the back knitted fabric layer is in contact with the concave portion joined to the front knitted fabric layer. The protrusions are not tied, the recesses and protrusions form a handle, and the thread denier of the recess is 1/2 or less of the thread denier of the protrusion,
A double-sided knitted fabric characterized in that the yarn of the recess is made of a hydrophobic filament made of a drawn yarn or a processed yarn having a crimping ratio of 15% or less, and the knitted ground of the recess is made of a mesh of two or more stitches. Will be resolved.

The hydrophobic filament referred to in the present invention is 20
C, 65% R.C. A filament yarn having a water content in H of 5% or less, which is polyester fiber, polyamide fiber,
Acrylic fiber and its blended yarns and mixed yarns are also included.

Even in a knitted fabric structure having a concave portion and a convex portion,
The treatment of sweat is not efficient even when there are many convex portions with respect to the concave portions and vice versa, and there is a problem in that clothes cling to the body due to sweat. In the present invention, the above problem is solved by forming a handle with a concave portion and a convex portion and setting the thread denier of the concave portion to 1/2 or less, preferably 1/3 or less of the thread denier of the convex portion. In this case, the larger the yarn denier difference between the concave portion and the convex portion, the more effectively the convex surface comes into contact with the skin, and the stuffiness and stickiness during sweating can be prevented.
The shape of the handle is not particularly limited, but it is preferable that the handle has a planar shape because it is likely to be insufficient in absorption / diffusion in the case of a lot of perspiration, such as in the case of dot or line. The term "planar pattern" as used herein does not mean a point or line in which one loop is continuous, but a pattern in which two or more recesses or protrusions continuously form a surface in the well or course direction.

Further, when a hydrophobic filament, particularly a stretched yarn with less entanglement or a processed yarn with a crimping rate of 15% or less is used as the yarn constituting the concave portion of the knitted fabric structure, the transfer and diffusion action of sweat is effectively performed. The hydrophilic spun yarn, the filament yarn, and the hydrophobic spun yarn cannot exhibit sufficient sweat migration and diffusion action. It is considered that this is because water retention of sweat is mainly in the case of hydrophilic threads, and entanglement of threads is mainly in the case of hydrophobic spun threads, whereby sweat is retained, and migration and diffusion of sweat is reduced. Further, the thread structure of the concave portion is preferably a multifilament having a small single fiber denier because the absorption of sweat is increased by the capillary effect.

The crimp ratio of the processed yarn of the hydrophobic filament used in the double-sided knitted fabric of the present invention is determined by measuring as follows. That is, using a measuring machine with a circumference of 1 m, the tension of the sample is kept constant at a tension equal to or lower than a predetermined load to make a 10-m roll small mock to prevent the muffle from disturbing. In order to prevent shrinkage, hot water treatment is performed by immersing in hot water at 90 ° C. for 20 minutes. After hot water treatment, drain the water from the skein to prevent the skein from disturbing, and in a horizontal state, set the temperature to 20 ± 2 ° C and the humidity to 65 ± 2% RH.
Leave for 4 hours or more. Hang one end of the cassette on the hook of the cassette, and apply the initial load to the other end, and after 1 minute, remove the initial load. Then, a load is applied, and after one minute, the length (L ₁ ) inside the cassette is measured and the load is removed. After the weight is removed, the cassette is left without weight for 2 minutes, the initial load is applied again, and after 1 minute, the inside length (L ₂ ) of the cassette is measured. The predetermined load means 1/10 g per 1 denier of the indicated fineness. The initial load in this method is per denier (2 /
1000) × 20. The load in this method refers to (1/10) × 20 g per 1 denier of the indicated fineness. The crimp rate is calculated by the following formula. Crimping rate = [(L ₁ −L ₂ ) / L ₁ ] × 100

Further, it is effective for the treatment of sweat that the concave knitted ground has a mesh structure in which the surface knitted fabric is one-tack-bonded. The mesh formed by one-sided tacking preferably has 2 or more meshes, and more preferably 3 or more meshes. It should be noted that there is no particular difference in the effect between the mesh formed here and the checkered pattern or the twill pattern. The knitting method of the mesh may be a generally used one-tack method. In the knitted fabric of the present invention, the yarns forming the recesses are one-tucked to the surface knitted fabric layer and knitted.

Further, the effect of absorbing, migrating and diffusing sweat is further promoted by hydrophilizing the double-sided knitted fabric with a commonly used hydrophilic agent such as polyoxyalkylene glycol represented by polyethylene glycol. . The hydrophilic treatment method is not particularly limited, but is selected depending on the hydrophilic composition, the processing method, the yarn structure of the double-sided knitted fabric, the knitting structure, and the like.

Further, the convex portion is composed of two or more kinds of hydrophobic filament yarns, and the ratio of single fiber denier (d / f) of each filament yarn is 1: 1.3 or more, more desirably 1: 2 or more. By so doing, the convex portion not only comes into direct contact with the skin to absorb sweat, but also effectively exhibits the transfer and diffusion action of sweat. The hydrophilic spun and filament yarns have an excellent sweat absorbing action, but the sweat transfer and diffusion actions are insufficient, and the hydrophobic spun yarns have an insufficient sweat absorbing action. It should be noted that, of the two or more types of hydrophobic filament yarns, at least one type of the hydrophobic filament yarns preferably has a denier of 2 or less, more preferably 1 denier or less. The cross-sectional shapes of two or more types of hydrophobic filament yarns are also preferably different, and the combination of round cross-section and triangular cross-section, and the combination of round cross-section and special cross-section yarn such as Y cross section or hollow cross section is more effective. . Further, the composite of two or more kinds of hydrophobic filaments may be carried out by a known means such as a compounding yarn, a compounding twist and an air mixing fiber.

The present invention will be described below with reference to the drawings.
FIG. 1 shows the double-sided knitted fabric of the present invention, in which the convex portion 5 of the back knitted fabric layer 4
FIG. 3 is a model cross-sectional view showing an example in which the above composite filament yarn is arranged, and the composite filament yarn is on the human body side when worn and is always in contact with the skin. On the other hand, the hydrophobic filament disposed in the concave part 6 of the back knitted fabric and in contact with the front knitted fabric layer 7 does not come into contact with the skin. The hydrophobic filaments arranged in the recesses effectively promote the transfer and diffusion of sweat as described above.

FIG. 2 is a model cross-sectional view showing an example of a general double-sided knitted fabric. FIG. 3 is a plan view showing an example of a sheet pattern formed on the back knitting ground of the double-sided knitted fabric of the present invention. The size of the area of the flat pattern is determined by the knitting structure, yarn composition, etc., but if the area is too large, the contact surface of the convex part of the back knitting layer with respect to the skin becomes large, and effective treatment of sweat is insufficient. Becomes
Further, the shape of the handle is not particularly limited, but if the handle of the protrusion is unevenly arranged on the skin, the treatment of sweat becomes insufficient, so that the protrusion is evenly arranged on the back knitting ground. Is desirable.

FIG. 4 shows an example of the basic knitting structure of the mesh of the recess. In the figure, 7 is the front knitted fabric layer, 5 and 6 are the back knitted fabric layers, and 6 '
Indicates the mesh portion of the recess. The structure of the surface knitted fabric layer 7 in the double-sided knitted fabric of the present invention is not particularly limited, but a structure having a large surface area such as a honeycomb or picket in order to promote the perspiration of sweat from the surface knitted fabric layer into the outside air. preferable.

In the present invention, the hydrophobic filament yarn in the concave portion of the back knitted fabric layer is tuck-bonded to the front knitted fabric layer, and the convex portion is formed into a plain knitted fabric, whereby the double-sided knitted fabric of the present invention becomes a reversible knitted fabric. Therefore, the obtained knitted fabric becomes a double-sided knitted fabric having a two-layer structure, and it becomes possible to add a new function to each layer. In the surface knitted fabric layer, it is also possible to adopt a modified structure such as picket, honeycomb, and twill, and it is also possible to obtain a knitted fabric having an excellent appearance. 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. A new effect can be created by changing the concave and convex portions even in the back knit ground layer. For example, the pattern of the back knitted fabric layer can be freely selected by combining the concave and convex parts, and a reversible knitted fabric in which the front knitted fabric layer is well-balanced, the back knitted fabric layer is uneven and the pattern can be freely changed can be obtained. it can.

It is also possible to make the height of the convex portions of the concave portion different. For example, by increasing the stitches of the composite filament layer of the convex portion, the amount of air entangled in the stitches increases, and the reversible having excellent heat retention and cushioning property. A knitted fabric can be obtained. Further, if the concave hydrophobic filament yarn is made thinner and the height of the convex composite filament layer is increased, it is possible to form a reversible knitted fabric having an excellent lightweight feeling.

[0021]

[Example] Using a 20-gauge double jersey machine, 150d / 48f bright polyester processed yarn was used for the surface knitted fabric layer.
Using a bright polyester stretched yarn 7
5d / 24f, polyester SD75 / 3 on the convex part
A reversible knitted fabric was formed using a composite filament obtained by air-mixing 6 processed yarns and SD100 / 72 processed yarns. The pattern of the concave convex portions of the back knitted fabric was a checkered pattern, and the front knitted fabric layer was a honeycomb reversible knitted fabric. Training weight was formed with a basis weight of 300 g / m ² after dyeing and finishing. As a result of wearing this training wear, it was confirmed that sweat was excellent in comfort, and even in a wearing test when sweating due to jogging, sweat was transferred to the hydrophobic filament yarn through the composite filament layer in contact with the skin and diffused. Also, the surface knitted fabric layer is 150d / 4 bright polyester processed yarn.
8f, the tack part is a bright polyester processed thread 75d /
24f, the back knitted fabric layer is polyester SD75 / 36 Y-section yarn and SD100 / 72 Air-blended composite yarn using air-blended composite fabric 300g / m ² Reversible knitted fabric Stuffiness,
The sticky feeling and the cold feeling after exercise were remarkably improved, and the feeling was comfortable.

[0022]

INDUSTRIAL APPLICABILITY The double-sided knitted fabric of the present invention is excellent in wearing comfort, has no discomfort during sweating, and can maintain its performance permanently. Therefore, it is suitable for sportswear and underwear. is there.

[Brief description of drawings]

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

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

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

FIG. 4 is an example of a basic knitting structure diagram of a concave mesh of the double-sided knitted fabric of the present invention.

[Explanation of symbols]

 4 Back knitting layer 5 Convex part 6 Concave part 6'Mesh part 7 Surface knitting layer 9 Repeat part of checkered pattern 10 Convex pattern part 10 'Recessed part

Claims (2)

[Claims] 1. A double-sided knitted fabric, wherein the front knitted fabric layer and the back knitted fabric layer are composed of hydrophobic filaments, and the back knitted fabric layer is composed of concave portions which are joined to the front knitted fabric layer and convex portions which are not joined. , The concave and convex portions form a handle, the denier of the concave portion is 1/2 or less of the denier of the convex portion, and the concave yarn is a drawn filament or a processed filament having a crimping rate of 15% or less. The double-sided knitted fabric is characterized in that the knitted ground of the concave portion is formed of meshes of two or more meshes. 2. The double-sided knitted fabric according to claim 1, wherein the convex portion is composed of two or more kinds of hydrophobic filament yarns having a single fiber denier (d / f) ratio of 1: 1.3 or more.