JPH05186941A - Knit fabric - Google Patents

Abstract

PURPOSE:To provide double knitted fabric of dry touch with no stickiness excellent in sweat-absorbing ability, to be used as a knit material for sportswear. CONSTITUTION:The objective double knitted fabric made up of a surface layer and back surface layer with a binding layer between them. Each of the surface and back surface layers is comprised of synthetic fibers 1.5-5.0 denier in single fiber fineness, and also the surface layer is provided with an additional layer just thereunder where the above-mentioned fibers platingstitched with ultra-fine fibers 0.1-0.5 denier in single fiber fineness.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a double knit fabric. Further, the present invention relates to a double knit material which is suitable as a material for sportswear, in particular, for training clothes or shirts and pants for competition, which has good sweat absorption and absorbency and is dry and non-greasy and comfortable to wear.

[0002]

2. Description of the Related Art A cloth that absorbs sweat well and has a dry surface that comes into contact with the skin is a very preferable performance as a sportswear material. Various attempts have been made to obtain this type of fabric. As an example, a method has been proposed in which water absorption is imparted to the entire double knit and then water repellency is partially imparted to the back surface. The drawbacks of this method are poor durability and high cost because the method for imparting water repellency is a printing method. As another example, by making the front side and back side of the double knit monofilament denier that is a constituent fiber relatively thin on the front side and thick on the back side, the sweat sucked on the back side can be absorbed by the difference in the suction force of the capillary phenomenon. The idea is to spread it efficiently on the front side. However, in this case, in order to exert the capillary phenomenon, the yarn forming the front side must be made up of a large number of yarns with a considerable extra fineness, that is, so-called high count yarns. There is a constraint. However, when this high-count yarn is used as a fiber on the surface layer side of sportswear, wear, pilling, and snagging are unavoidable under harsh use conditions, and the disadvantages are too great in this respect, and in practice The method is difficult to use.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to avoid the drawbacks of the latter of the above-mentioned prior arts, that is, the drawbacks when high count yarns are used as fibers on the surface layer side. That is, even under severe use conditions, the problems of pilling, snagging, and wear are avoided, and sweat is transferred from the back surface layer, that is, the side in contact with the skin to the front surface layer side rapidly, and the back surface layer side is in a dry touch state. In order to satisfy the contradictory conditions, the problem is how to construct the knitted fabric.

[0004]

In order to solve the above-mentioned problems, the present invention is directed to "in a double knit in which a front surface layer and a back surface layer are bonded by a bonding layer, each layer is a single fiber denier 1.5. To 5.0 denier synthetic fiber as a main component, and the surface layer thereof is spliced with superfine fibers of 0.1 to 0.5 denier single fiber in addition to the fibers constituting the surface layer. In addition, a knitted fabric characterized in that a layer immediately below the ultrafine fibers is formed ”is proposed. As a more preferred embodiment, in the above knitted fabric, “a knitted fabric characterized in that the splicing yarn is an ultrafine long fiber obtained by mixing polyester fiber and polyamide fiber”
Furthermore, in the above-mentioned knitted fabric, "a knitted fabric characterized in that the fibers constituting the front surface layer, the back surface layer and the binding layer are polyester filaments" are proposed.

In the present invention, the fibers constituting the double-knit surface layer are ordinary yarns, that is, synthetic fibers having a single fiber denier of 1.5 to 5.0. This avoids the occurrence of pilling and snugging when using a high count yarn. In the present invention, it is important to knit a high count yarn in the ordinary fiber by the splicing method. That is, the additional yarn of the high count yarn is used as the water absorbing layer. Since the splicing method is used, the high count yarn is hidden by the surface yarn made of the normal denier, and the defects of the high count yarn are not exposed. The disadvantages include the above-mentioned pilling, snagging, wear,
Includes dyeing defects such as poor color development. Next, as the fibers constituting the double-knit tie layer and the fibers constituting the back layer, denier yarns are used as in the case of the front layer. As a result, the sweat absorbed in contact with the back surface layer is transferred to the splint portion by the capillary phenomenon due to the denier difference between the fibers of the back surface layer and the binder layer and the splicing fiber of the surface layer, and as a result, the back surface layer. Has no wet feeling and is always dry.

As described above, in the present invention, the fibers constituting the surface layer have a single fiber denier of 1.5 to 5.
0 fibers are mainly used. This is for avoiding the drawbacks in the case of using the high count yarn for the surface layer as described above, and therefore, the single fiber denier is preferably 1.5 or more. When the denier of the single fiber exceeds 5.0, the bulkiness of the yarn, which is an aggregate of the single fibers, is lowered, so that the concealing property of the high count yarn immediately below by the fiber is deteriorated, and the defect of the high count yarn is knitted. It is not preferable because it appears on the surface of the ground. The fibers constituting the surface layer may be filament yarns or spun yarns as long as they satisfy the above-mentioned single fiber denier conditions. However, the filament yarns are strong against pilling and snagging, and also have breathability. It is also ideal because it has a good appearance as sportswear. As the material, synthetic fibers such as polyester fiber, polyamide fiber, acrylic fiber and the like are used. If necessary, natural fibers such as cotton, hemp and wool, and regenerated fibers such as rayon may be mixed with these synthetic fibers, if necessary.

The high count yarn must be a long fiber yarn having a single fiber denier of 0.1 to 0.5 denier. This is an ultrafine denier necessary for exerting a difference in the suction force due to the capillary phenomenon between the fibers constituting the back surface layer and the bonding layer as described above. This fiber may be, for example, a continuous fiber made of polyester alone or a mixed continuous fiber made of polyester and polyamide. However, in the latter case, it is not necessary to make the denier finer than in the former case even though it is in the region of extremely fine denier, and it is more preferable in terms of technology and cost. This is because, in the latter case, since relatively hydrophilic and hydrophobic fibers are present in a mixed state, it is considered that the adsorption and desorption of water occur in a well-balanced manner, and the water transfer is accelerated. It is more preferable than the former case.

Further, in order to further sufficiently absorb the sweat absorbed in the back surface layer from the back surface layer, the high count yarn is approximately 1/3 of the total number of denier of the back surface layer constituent fibers.
Total denier equivalent to the above, more preferably 1
It is desirable to use a yarn having a thickness that provides a total denier number equivalent to / 2 or more.

As a method for producing the high count yarn, a known production method known as a so-called ultrafine fiber production method is used. For example, by a direct spinning method, a method of spinning sea-island fibers and then extracting and removing sea components, and a method of spinning a composite component and then dividing the composite component by splitting means. Obtainable. Especially in the case of composite spinning, polyamide and polyester are spun as a single yarn having a side-by-side multi-layered shape, and then divided by heat and mechanical action in false twisting or knitted into an alkali. It can be divided by reducing the amount to obtain a high count yarn.

The fibers used in the binder layer and the back layer of the double knit may be filament yarn or spun yarn, like the fibers used in the surface layer, and the monofilament denier preferably has the same fineness as that of the surface layer fibers. If the monofilament denier of the binder layer and the back layer is low, the difference in fineness from the splicing yarn does not occur and sweat cannot be transferred effectively, and there is a certain thickness formed by the binder layer and the back layer. This is because the back surface layer is dry-touch, and for that purpose, the single fiber denier is 1.5
It is necessary to be above. However, in the fibers that compose these layers, if the single fiber denier becomes too large, the first sweat absorption cannot be performed effectively,
It is preferably 5.0 denier or less. The fiber material used here is also the same synthetic fiber as the fiber material used in the surface layer. Since the fiber used is basically a hydrophobic material, at least the back side should be absorbed in order to absorb the generated sweat more quickly and to eliminate the feeling of wetting in the back layer after sweating more sufficiently. It is effective to apply hydrophilic treatment to the fiber surface. As the hydrophilic treatment agent, a known processing agent used for ordinary textile fibers can be used.

[0011]

The present invention will be further described below with reference to its examples. Example 1, Comparative Examples 1 and 2: The following fibers were used as the fibers constituting the front surface layer and the back surface layer, and a double knit shown in the structure chart of FIG. 1 was produced. That is, in the example and the comparative example, the yarn feeding numbers 1, 3, 5, 7 and 2, 4, of the organization chart
6 and 8 are the same in that ordinary polyester semi-dal (containing titanium dioxide 0.2%) false twisted textured yarns 150d-48f are used, but the yarn supply numbers 2, 4, 6, 8 are the same.
In Example 1 of the present invention, the high count yarn 75d-264f (single yarn fineness 0.28 denier) made of polyester and nylon is spliced and knitted, Comparative Example 1,
2 is a normal polyester semi-dal false twisted yarn 75d-
24f and 75d-72f were spliced and prepared. That is, in the examples and the comparative examples, the yarn feeding total fineness numbers at the yarn feeding numbers 2, 4, 6, 8 are the same,
In the example, a high count yarn is used as a splicing yarn, and in the comparative example, a high count yarn is not inserted.

The knitted fabrics obtained in Example 1 and Comparative Examples 1 and 2 were dyed and finished according to a conventional method, and the performance of each of them was evaluated by the following model tests.
The test and its evaluation method are as follows. (1) About diffusion of water (sweat): 0.5 water on the back surface of the knitted fabric
ml is dropped, and after 1 minute, the diameter of a circle wet with water is measured to determine the area. However, this circle shows not the wetting of the back surface but the wetting of the surface layers including the layer immediately below the surface, that is, the wetting caused by diffusion. (2) About the drying rate of water (sweat): About 0.5 ml of water was dripped on the glass surface, and the knitted fabric was covered so that the back surface of the knitted fabric was in contact with the water droplets (starting at that time), and the time was taken. The decrease in the total weight of the glass, water and the knitted fabric is recorded with the passage of, and the drying rate of water (time required for 50% drying) is obtained. The measurement was performed in a room at 23 ° C. and 60% RH. (3) Regarding wet feeling: This was judged by touching the back surface of the knitted fabric with a finger 1 minute after dropping a water drop in the experiment of (1). The results of these model tests are shown in Table 1 below and also in FIG.
Shown in.

[0013]

[Table 1]

From Table 1 and FIG. 2, it is shown that the knitted fabric according to the present invention in which the layer directly below the ultrafine fibers is formed is excellent in all respects and is excellent in comfort as a material for sportswear. ..

[Brief description of drawings]

FIG. 1 shows a structure chart of a double knit according to the present invention.

FIG. 2 is a graph showing a drying rate of water in each knitted fabric in a model test (2).

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshihiro Harada 1-1239 Umeda, Kita-ku, Osaka-shi, Osaka Kuraray Co., Ltd.

Claims (3)

[Claims] 1. A double knit in which a front surface layer and a back surface layer are bonded by a bonding layer, and each layer is mainly composed of synthetic fiber having a denier of 1.5 to 5.0 denier. In the surface layer, a layer directly below the ultrafine fibers is formed, in which the fibers constituting the surface layer are spliced with ultrafine fibers having a denier of 0.1 to 0.5 denier. A knitted fabric. 2. The knitted fabric according to claim 1, wherein the splicing yarn is an ultrafine long fiber in which polyester fiber and polyamide fiber are mixed. 3. The knitted fabric according to claim 2, wherein the fibers constituting the front surface layer, the back surface layer and the binding layer are polyester continuous fibers.