JPH09176938A - Stretchable knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stretchable knitted fabric for innerwear or outerwear, having such uneven structure as to includingly hold air layer on one side of the fabric, therefore having thermal insulation effect despite being thin. SOLUTION: Inelastic yarns are fed into 1st to 4th yarn feed ports, respectively, a 5th port is fed with an elastic yarn-contg. yarn, and a plain knitting is conducted at the respective beds of a double bed-bearing knitting machine in such a way that a knit stitching is carried out at one party of the beds, while a tuck stitch at the other party, thus obtaining the objective one piece of a stretchable knitted fabric each of the loops on one side in knitting texture repeat is constituted of a connected knit loop and the following plain knit loop, while where each of the loops on the other side a plain knit loop made by knitting the inelastic fibers, and the following relationship is satisfied: (the number of plain knit loops on the other side)/(the number of connected knit loops plus the number of plain knit loops on one side)=(1-3)/2.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a stretchable knitted fabric using elastic yarn. More specifically, the present invention relates to a stretchable knitted fabric for innerwear and outerwear having a heat-retaining property because one side of the knitted fabric has an uneven structure that holds an air layer.

[0002]

2. Description of the Related Art Conventionally, for example, a stretchable knitted fabric using an elastic yarn as a knitted fabric for innerwear is well known, and a knitted fabric knitted with a single bag or a milling reversible structure has a thin and soft warmth. As underwear, it is called "New Inner" and put on the market. However,
These knitted fabrics have many air layers in the fabric, which are important for heat retention, only on the surface of the knitted fabric, and are not held in a sealed state. Therefore, the air layer has a drawback that it is easy to separate from the knitted fabric, and the heat retaining property is not always satisfactory.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and provides a stretchable knitted fabric having one side having an uneven structure for holding an internal air layer and having a thin and heat-retaining property. With the goal.

[0004]

In order to solve the above-mentioned problems, the present inventor has studied the various knitting structures, and as a result, reached the present invention by specifying the structures and limiting the use of yarns.
That is, the present invention uses a knitting machine having a double bed to knit a plain knitted fabric in each bed, and knitted knitting in one bed, and knitted in a tuck knitting method in the other bed In the ground, the loop on one side in the knitting tissue repeat is composed of a connecting knit loop and the next fabric loop knitted from a yarn including an elastic yarn, and the loop on the other side is knitted using an inelastic fiber. The number of knitting courses in the knitting structure repeat is the sum of the number of knitting loops on the other side / (the number of connected knit loops and the number of knitting loops on the one side). ) Is 1
The stretchable knitted fabric is characterized by being ˜3 / 2. The present invention will be described in detail below.

According to the present invention, the air layer is hermetically held between the separated knitting stitches, and the change in the thickness of the elastic fiber that is fed to a specific position on one side when the elastic knitting is performed is utilized to make the other non-elastic layer. It is a stretchable knitted fabric for innerwear and outerwear with heat retention, which has a textured surface that undulates a plain loop composed of threads only and has an uneven surface. First, in the present invention, the loop on one side in the knitting tissue repeat is composed of a connecting knit loop and the next fabric loop knitted from a yarn including an elastic yarn, and the loop on the other side is made of an inelastic fiber. The number of knitting courses in the knitting structure repeat is the number of knitting loops on the other surface / (the number of connected knit loops and the number of knitting loops on the one surface). It is important that the sum) is 1-3 / 2. Number of sky loops on the other side / (sum of number of connected knit loops on one side and number of sky loops)
When the ratio is less than 1, unevenness is not formed on one side and the desired knitted fabric cannot be obtained. Also, if it exceeds 3/2, knitting becomes difficult, or even if knitting is possible, the shape of the uneven stitches formed on one side becomes too large, the stitches of the finished knitted fabric become loose, and snagging easily occurs. It will be unbearable. Preferably, the number of knitting courses in the knitting structure repeat is 3 (the number of knitting loops on the other side / (the sum of the number of knit loops on one side and the number of knitting loops on one side)).
/ 2. Also, from the viewpoint of ease of knitting, there are two courses, a connected knit loop and a plain cloth loop, and the other side is a plain cloth loop.
It is preferable that two or three courses, or one side is four courses of a connection knit loop and a top loop, and the other surface is four or six rows. Furthermore, one side is connected
There are two courses, one for the top and one for the sky, and the other side is 3 for the sky.
Course, or knit loop on one side and a knit loop
Most preferably, the other side is a plain loop 6 course.

In the knitted fabric of the present invention, the number of courses of the number of connected knit loops on one side and the number of plain knit loops is not particularly limited, but from the viewpoint of balance when the knitted fabric is formed, one side is knitted. It is preferable that the number of courses of the connection knit loop and the number of knit loops of the plain cloth are the same. The knitting structure of the knitted fabric of the present invention will be described with reference to the drawings. FIG. 1 is a basic schematic diagram showing an example of the double-sided encounter knitting structure of the present invention.

In FIG. 1, an arrangement of odd number needles (long needles) and even number needles (short needles) of cylinder needles, and odd number needles (long needles) and even number needles (short needles) of dial needles forms a stitch in a repeat of 5 yarns. Is done. In the first yarn feeder (hereinafter, the yarn feeder is indicated by F) and the fourth F, all the needles of the cylinder perform the plain knitting. In 2nd F, the cylinder odd needle (long needle) is a tuck knit,
The odd number dial (long needle) is knitted and the front and back of the knitted fabric are knotted. In the 3rd F, the cylinder even needles (short needles) are tucked and the dial even needles (short needles) are knitted to knot the front and back of the knitted fabric. In the 5th F, all stitches of the dial are stitch-stitched to complete one stitch structure.

In FIG. 1, the number of knitting courses in the knitting organization repeat is two courses, one is a knit loop and the other is a knitting loop, and the other side is a representative knitting organization of a two-course knitting loop. Is. That is, in FIG. 1, the back knitted fabric (on the side of the dial needle) is a knit loop (2nd F, 3rd F) 1 course and a 2nd course of 1st stitch loop (5th F) The outer knitted fabric (on the side of the cylinder needle) is made of 2 courses of the plain loop (1st F, 4th F).

The connecting knit loop is the second one.
In F, the dial is odd-numbered needle (long needle), and in 3F, the dial is evenly knitted (short needle) to form one course, but it may be only the second or third layer. However, from the viewpoint of ease of knitting, it is preferable to make one course as shown in FIG. 1 and FIG. 2 described later, or as shown in FIG. 3 and FIG. 4 described later. Also, in the back knitted fabric (dial needle side), it is sufficient that the plain cloth loop comes after the connected knit loop,
In FIG. 1, the 4th F and 5th F stitches may be interchanged. Further, in FIG. 1, the back knitted fabric is described as the dial needle side and the front knitted fabric is as the cylinder side, but of course, both may be interchanged. The above points are naturally applicable to FIGS. 2 to 4 described later.

In FIG. 1, the first, second, third, fourth
A non-elastic yarn is used as the yarn supplied to F, and a yarn including an elastic yarn is used for the fifth F. Here, using a knitting machine having a double bed, in a knitted fabric in which a plain knit is knitted in each bed and knitted in one bed while being tucked in the other bed, a knitting structure The number of knitting courses in the repeat is two courses, that is, the connected knit loop and the next knitting knitting, and when knitting the knitting knitting, yarns containing elastic fibers are used, and in the other knitting knitting, non-elastic fibers are used. The reason for organizing 3 courses is as follows.
That is, in the surface knitted fabric, if the number of courses knitted with only the non-elastic yarn is less than two courses, unevenness is not formed on one side, and the desired knitted fabric cannot be obtained. Further, in the surface knitted fabric, when the number of courses knitted with only the non-elastic yarn is 4 or more, knitting becomes difficult, or even if knitting is possible, the uneven stitch shape formed on one side becomes too large, resulting in a finished knitted fabric. Loose ground stitches tend to snag, making them unusable.

The term "non-elastic yarn" as used herein refers to cotton yarn, wool, hemp, and other arbitrary yarns such as polyester, nylon, Kyupra and rayon, and processed yarns, blended yarns, and composite yarns using these yarns. Threads are also included. In addition, a yarn including an elastic yarn means a long fiber twisted yarn (FTY) having a polyurethane elastic yarn as a core and a periphery thereof covered with the above-mentioned non-elastic yarn, a fine spinning mixed twisted yarn (CSY) (a polyurethane elastic yarn and a cotton yarn, A covered elastic yarn such as a yarn obtained by covering short fibers such as acrylic spun yarn).

The thickness of the non-elastic yarn and the yarn including the elastic yarn is not particularly limited, but is preferably 30 to 100 denier from the viewpoint of thinning and low basis weight. The number of knitting courses in the knitting structure repeat of the present invention is two knitted loops, one side being a connected knit loop and the other is a knitting loop, and the other side is an example of a representative knitting structure in which the knitting loop has 3 courses. As shown in FIG. 2, it is achieved by adding one course of the same organization as that of the first and fourth floors between the fourth and fifth floors of FIG.

FIG. 3 is a basic schematic view showing an example of the rubber encounter knitting structure of the present invention. In FIG. 1, stitches are formed in a repeat of eight yarns by an arrangement of odd needles (long needles) and even needles (short needles) of cylinder needles and odd needles (long needles) and even needles (short needles) of dial needles. . In the 1st, 3rd, 5th and 7th floors, all the needles of the cylinder are used for stitch stitching. 2nd floor
Then, the cylinder odd needle (long needle) is tuck knit, and all dial needles are knit knit, and the front and back of the knitted fabric are knotted. In the 6th F, even number of cylinder needles (short needles) are tuck knitting, and all dial needles are knitting knitting to knit the front and back of the knitted fabric. In the 4th and 8th floors, all the dial needles are subjected to the plain stitch knitting so that the knitting structure becomes one complete.
The yarns supplied to the first, second, third, fifth, sixth, and seventh Fs are non-elastic yarns, and the fourth and eighth Fs are elastic yarns.

In FIG. 3, the knitting courses in the knitting structure repeat of the present invention have four knitting courses, one is a knit loop and the other is a knit loop, and the other is a knitting course. It is a representative edition organization of four loops. In the knitting structure repeat of the present invention, the number of knitting courses is 4 on one side, that is, the knit loop 2 courses and the sheet knit loop 2 courses, and the other side is the sheet knit loop 6 As the representative knitting structure of the course, for example, as shown in FIG. 4, the same structure as the second, third, sixth, and seventh Fs is provided between the third and fourth floors and the seventh and eighth floors of FIG. This is achieved by adding courses.

In the present invention, the knitting structure is not particularly limited as long as it satisfies the above requirements, but when the number of knitting courses in the knitting structure repeat is 8 or more in total on both sides,
From the viewpoint of ease of knitting, as shown in FIG. 3 and FIG. 4, not all needle tuck stitches of cylinder needles, but odd needles (long needles) and even needles (short needles)
It is preferable that it is the needle selection tuck edition. Further, in that case, it is not preferable that the distance between the connecting knit loops on one side is too large. Therefore, the positional relationship between the connecting knit loops is preferably as shown in FIGS. 3 and 4.

The knitted fabric of the present invention is made of innerwear and outerwear.
From the point of handling for wear, the basis weight is 150 to 200 g /
m is preferable. The knitted fabric of the present invention has an air content of 80 to 95%, which is measured by the method described below, from the viewpoint of heat retention.
It is more preferably 85 to 90%. With the above configuration, the present invention has a thickness of 0.5 to 1.5 mm,
Furthermore, even if the thickness is as thin as 0.5 to 1.2 mm, a high heat retention rate of 25 to 40%, further 30 to 40% is achieved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described with reference to Examples, but the present invention is not limited thereto. The method for evaluating the knitted fabric characteristics produced in each example is as follows. (1) Thermal insulation evaluation Precision rapid thermophysical property measuring device (KES-F7-Thermo Labo 2
Mold), and one side of the sample is placed in contact with the hot plate in an environment of 20 ° C. and 60% RH, and the wind is blown at a wind speed of 0.2 m / S perpendicularly to the sample surface. Measure the amount of heat required to keep at ℃. The heat retention is expressed by α = (W0−W) ÷ W0 × 100 (%), where W0 is the required heat amount without a sample and W is the required heat amount when the sample is placed.
It was determined as the heat retention rate α of the sample.

Does not feel heat retention: α = less than 25% Feels heat retention: α = 25% or more and less than 30% Very feels heat retention: α = 30% or more (2) Air content Air content is cloth It was calculated by the following formula from the fiber filling rate (g / m of basis weight / thickness m / specific gravity of fiber × 100%).

Air content% = 100-Fiber filling rate (3) Thickness Using a compression tester (KES-FB3), a compression load of 0.
The thickness at 1 g / cm ² was measured.

[0020]

Example 1 Knitting was performed according to the knitting structure shown in Fig. 1 by using a KJ-36 type double-bed circular knitting machine manufactured by Toyota Industries Corporation with 30 "x 28 gauge x 36 yarn. 50 denier on the 1st and 4th floors. / 17 filament nylon 66 original yarn is fed, and 50 denier / 17 filament nylon 66 false twisted yarn is fed to the 2nd and 3rd floors, and 5th floor is 50
Denier / 48 filament nylon 66FTY was fed and knitted. The obtained knitted fabric was finished to have a basis weight of 205 g / m with a width of 149 cm by an ordinary dyeing method. as a result,
The one side of the knitted fabric had very uniform and small unevenness in both the width direction and the longitudinal direction. When this knitted fabric was cut along the course and the cross section was seen, voids were confirmed in each of the facing stitches. The characteristics of this knitted fabric are as shown in Table 1, and a thin product with good heat retention was obtained.

[0021]

Example 2 Knitting was performed in accordance with the knitting structure shown in Fig. 2 using a KJ-36 type double bed circular knitting machine manufactured by Toyota Industries Corporation, which has 30 "x 28 gauge x 36 yarns. 1F, 4F,
Nylon 6 with 50 denier / 17 filament on the 5th floor
6 yarns are fed and 50 denier / 17 on 2nd and 3rd floor
Filament nylon 66 false twisted yarn is fed and
F is 50 denier / 48 filament nylon 66F
TY was fed and knitted. The obtained knitted fabric was finished to have a unit weight of 235 g / m with a width of 155 cm by an ordinary dyeing method.

As a result, one side of the knitted fabric was provided with extremely uniform and large unevenness in the width direction and the longitudinal direction. Also,
The characteristics of this knitted fabric are as shown in Table 1, and the one having improved heat retention as compared with Example 1 was obtained.

[0023]

[Example 3] Knitting was performed according to the knitting structure shown in Fig. 3 using a KJ-36 type double bed circular knitting machine manufactured by Toyota Automatic Looming Co., Ltd. having 30 "x 28 gauge x 36 yarns.
50 denier / 17 filament nylon 66 original yarn is fed to F, 5F, 7F, 50 denier / 17 filament nylon 66 false twisted yarn is fed to 2F, 6F, 4F, Nylon 66FTY of 50 denier / 48 filament was fed and knitted on 8F. The knitted fabric thus obtained is dyed 173 with a width of 125 cm by an ordinary dyeing method.
Finished to g / m.

As a result, on one side of the knitted fabric, the size of the same extent as in Example 1 was provided, and the surface of the knitted fabric was further imparted with fawn-like irregularities, and surface changes were also added. The characteristics of this knitted fabric are as shown in Table 1, and a thin product with good heat retention was obtained.

[0025]

Example 4 Knitting was performed according to the knitting structure shown in Fig. 4 using a KJ-36 type double bed circular knitting machine manufactured by Toyoda Automatic Loom of 30 "x 28 gauge x 36 yarn supply. 1st F, 3rd
50 denier on F, 4th, 6th, 8th, 9th floor
17 filament nylon 66 yarn is fed and
50 denier / 17 filament nylon 66 false twist textured yarn was fed to F and 7F, and 50 denier / 48 filament nylon 66 FTY was knitted to 5F and 10F. The width of the obtained knitted fabric is 1 by an ordinary dyeing processing method.
Finished to a basis weight of 27 cm of 188 g / m.

As a result, the same fawn-like unevenness as in Example 3 was provided on one side of the knitted fabric, and the surface change was further emphasized. The characteristics of this knitted fabric are as shown in Table 1,
The heat retention was improved from that of Example 3.

[0027]

[Table 1]

[0028]

INDUSTRIAL APPLICABILITY The stretchable knitted fabric of the present invention makes it difficult for the air layer in the fabric to move due to the dense loops on the surface of the fabric, and further expands the air layer by utilizing the thickness of the elastic yarn when it is stretched. Therefore, when it is used as clothing, it retains air well and retains heat even when exercised. Further, according to the present invention, the stretchable knitted fabric which can form an uneven structure without using a special knitting machine such as a jaguar knitting machine and has sufficient heat retention even on a thin fabric Can be provided.

[Brief description of the drawings]

FIG. 1 is a knitting structure diagram of Example 1.

FIG. 2 is a knitting structure diagram of Example 2.

FIG. 3 is a knitting structure diagram of Example 3.

FIG. 4 is a knitting structure diagram of Example 4.

[Explanation of symbols]

 a non-elastic thread b thread including elastic thread

Claims (6)

[Claims] 1. A knitted fabric formed by knitting knitting on one bed and tucking on the other bed by using a knitting machine having a double bed and knitting knitting on one bed. The loop on one side in the knitted tissue repeat is composed of a connected knit loop and the next looped loop knitted from a thread including an elastic thread, and the loop on the other side is knitted using an inelastic fiber. The number of knitting courses in the knitting structure repeat is the number of knitting loops on the other surface / (the sum of the number of connected knit loops and the number of knitting loops on the one surface) Is 1-3 /
Stretchable knitted fabric characterized by being 2. 2. The number of knitting courses in a knitting structure repeat is two, one side being a connecting knit loop and a top stitch loop.
The stretchable knitted fabric according to claim 1, wherein the stretchable knitted fabric is a cloth and the other surface is a cloth loop 2 or 3 core. 3. The number of knitting courses in a knitting structure repeat is 4 courses, one side being a connecting knit loop 2 courses and a top row 2 courses, and the other side being a top row. The stretchable knitted fabric according to claim 1, wherein the stretchable knitted fabric has 4 or 6 courses. 4. The stretchable knitted fabric according to any one of claims 1 to 3, wherein the number of connected knit loops and the number of plain knit loops on the one side are the same. 5. An air content of 80 to 95%.
The stretchable knitted fabric according to any one of 4 above. 6. A thickness of 0.5 to 1.5 mm and a heat retention rate of 2.
It is 5 to 40%, The elastic knitted fabric according to any one of claims 1 to 5.